diff options
Diffstat (limited to 'drivers/input')
40 files changed, 3559 insertions, 111 deletions
diff --git a/drivers/input/input-polldev.c b/drivers/input/input-polldev.c index 490918a..0d3ce7a 100644 --- a/drivers/input/input-polldev.c +++ b/drivers/input/input-polldev.c @@ -73,7 +73,7 @@ static void input_polled_device_work(struct work_struct *work) static int input_open_polled_device(struct input_dev *input) { - struct input_polled_dev *dev = input->private; + struct input_polled_dev *dev = input_get_drvdata(input); int error; error = input_polldev_start_workqueue(); @@ -91,7 +91,7 @@ static int input_open_polled_device(struct input_dev *input) static void input_close_polled_device(struct input_dev *input) { - struct input_polled_dev *dev = input->private; + struct input_polled_dev *dev = input_get_drvdata(input); cancel_delayed_work_sync(&dev->work); input_polldev_stop_workqueue(); @@ -151,10 +151,10 @@ int input_register_polled_device(struct input_polled_dev *dev) { struct input_dev *input = dev->input; + input_set_drvdata(input, dev); INIT_DELAYED_WORK(&dev->work, input_polled_device_work); if (!dev->poll_interval) dev->poll_interval = 500; - input->private = dev; input->open = input_open_polled_device; input->close = input_close_polled_device; diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig index 7c662ee..be5c14a 100644 --- a/drivers/input/joystick/Kconfig +++ b/drivers/input/joystick/Kconfig @@ -193,6 +193,18 @@ config JOYSTICK_TWIDJOY To compile this driver as a module, choose M here: the module will be called twidjoy. +config JOYSTICK_ZHENHUA + tristate "5-byte Zhenhua RC transmitter" + select SERIO + help + Say Y here if you have a Zhen Hua PPM-4CH transmitter which is + supplied with a ready to fly micro electric indoor helicopters + such as EasyCopter, Lama, MiniCopter, DragonFly or Jabo and want + to use it via serial cable as a joystick. + + To compile this driver as a module, choose M here: the + module will be called zhenhua. + config JOYSTICK_DB9 tristate "Multisystem, Sega Genesis, Saturn joysticks and gamepads" depends on PARPORT diff --git a/drivers/input/joystick/Makefile b/drivers/input/joystick/Makefile index e855abb..fdbf8c4 100644 --- a/drivers/input/joystick/Makefile +++ b/drivers/input/joystick/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_JOYSTICK_GF2K) += gf2k.o obj-$(CONFIG_JOYSTICK_GRIP) += grip.o obj-$(CONFIG_JOYSTICK_GRIP_MP) += grip_mp.o obj-$(CONFIG_JOYSTICK_GUILLEMOT) += guillemot.o +obj-$(CONFIG_JOYSTICK_IFORCE) += iforce/ obj-$(CONFIG_JOYSTICK_INTERACT) += interact.o obj-$(CONFIG_JOYSTICK_JOYDUMP) += joydump.o obj-$(CONFIG_JOYSTICK_MAGELLAN) += magellan.o @@ -27,5 +28,5 @@ obj-$(CONFIG_JOYSTICK_TURBOGRAFX) += turbografx.o obj-$(CONFIG_JOYSTICK_TWIDJOY) += twidjoy.o obj-$(CONFIG_JOYSTICK_WARRIOR) += warrior.o obj-$(CONFIG_JOYSTICK_XPAD) += xpad.o +obj-$(CONFIG_JOYSTICK_ZHENHUA) += zhenhua.o -obj-$(CONFIG_JOYSTICK_IFORCE) += iforce/ diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 0380597..52ddb04 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1,5 +1,5 @@ /* - * X-Box gamepad - v0.0.6 + * X-Box gamepad driver * * Copyright (c) 2002 Marko Friedemann <mfr@bmx-chemnitz.de> * 2004 Oliver Schwartz <Oliver.Schwartz@gmx.de>, @@ -68,6 +68,8 @@ * - dance pads will map D-PAD to buttons, not axes * - pass the module paramater 'dpad_to_buttons' to force * the D-PAD to map to buttons if your pad is not detected + * + * Later changes can be tracked in SCM. */ #include <linux/kernel.h> @@ -77,7 +79,6 @@ #include <linux/module.h> #include <linux/usb/input.h> -#define DRIVER_VERSION "v0.0.6" #define DRIVER_AUTHOR "Marko Friedemann <mfr@bmx-chemnitz.de>" #define DRIVER_DESC "X-Box pad driver" @@ -87,10 +88,12 @@ but we map them to axes when possible to simplify things */ #define MAP_DPAD_TO_BUTTONS 0 #define MAP_DPAD_TO_AXES 1 -#define MAP_DPAD_UNKNOWN -1 +#define MAP_DPAD_UNKNOWN 2 #define XTYPE_XBOX 0 #define XTYPE_XBOX360 1 +#define XTYPE_XBOX360W 2 +#define XTYPE_UNKNOWN 3 static int dpad_to_buttons; module_param(dpad_to_buttons, bool, S_IRUGO); @@ -107,8 +110,10 @@ static const struct xpad_device { { 0x045e, 0x0289, "Microsoft X-Box pad v2 (US)", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x045e, 0x0285, "Microsoft X-Box pad (Japan)", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x045e, 0x0287, "Microsoft Xbox Controller S", MAP_DPAD_TO_AXES, XTYPE_XBOX }, + { 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W }, { 0x0c12, 0x8809, "RedOctane Xbox Dance Pad", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX }, { 0x044f, 0x0f07, "Thrustmaster, Inc. Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX }, + { 0x046d, 0xc242, "Logitech Chillstream Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX360 }, { 0x046d, 0xca84, "Logitech Xbox Cordless Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x046d, 0xca88, "Logitech Compact Controller for Xbox", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x05fd, 0x1007, "Mad Catz Controller (unverified)", MAP_DPAD_TO_AXES, XTYPE_XBOX }, @@ -135,18 +140,26 @@ static const struct xpad_device { { 0x0f30, 0x8888, "BigBen XBMiniPad Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x102c, 0xff0c, "Joytech Wireless Advanced Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX }, { 0x12ab, 0x8809, "Xbox DDR dancepad", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX }, + { 0x1430, 0x4748, "RedOctane Guitar Hero X-plorer", MAP_DPAD_TO_AXES, XTYPE_XBOX360 }, { 0x1430, 0x8888, "TX6500+ Dance Pad (first generation)", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX }, { 0x045e, 0x028e, "Microsoft X-Box 360 pad", MAP_DPAD_TO_AXES, XTYPE_XBOX360 }, { 0xffff, 0xffff, "Chinese-made Xbox Controller", MAP_DPAD_TO_AXES, XTYPE_XBOX }, - { 0x0000, 0x0000, "Generic X-Box pad", MAP_DPAD_UNKNOWN, XTYPE_XBOX } + { 0x0000, 0x0000, "Generic X-Box pad", MAP_DPAD_UNKNOWN, XTYPE_UNKNOWN } }; -static const signed short xpad_btn[] = { - BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, /* "analog" buttons */ +/* buttons shared with xbox and xbox360 */ +static const signed short xpad_common_btn[] = { + BTN_A, BTN_B, BTN_X, BTN_Y, /* "analog" buttons */ BTN_START, BTN_BACK, BTN_THUMBL, BTN_THUMBR, /* start/back/sticks */ -1 /* terminating entry */ }; +/* original xbox controllers only */ +static const signed short xpad_btn[] = { + BTN_C, BTN_Z, /* "analog" buttons */ + -1 /* terminating entry */ +}; + /* only used if MAP_DPAD_TO_BUTTONS */ static const signed short xpad_btn_pad[] = { BTN_LEFT, BTN_RIGHT, /* d-pad left, right */ @@ -173,12 +186,27 @@ static const signed short xpad_abs_pad[] = { -1 /* terminating entry */ }; -/* Xbox 360 has a vendor-specific (sub)class, so we cannot match it with only - * USB_INTERFACE_INFO, more to that this device has 4 InterfaceProtocols, - * but we need only one of them. */ +/* Xbox 360 has a vendor-specific class, so we cannot match it with only + * USB_INTERFACE_INFO (also specifically refused by USB subsystem), so we + * match against vendor id as well. Wired Xbox 360 devices have protocol 1, + * wireless controllers have protocol 129. */ +#define XPAD_XBOX360_VENDOR_PROTOCOL(vend,pr) \ + .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_INFO, \ + .idVendor = (vend), \ + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, \ + .bInterfaceSubClass = 93, \ + .bInterfaceProtocol = (pr) +#define XPAD_XBOX360_VENDOR(vend) \ + { XPAD_XBOX360_VENDOR_PROTOCOL(vend,1) }, \ + { XPAD_XBOX360_VENDOR_PROTOCOL(vend,129) } + static struct usb_device_id xpad_table [] = { { USB_INTERFACE_INFO('X', 'B', 0) }, /* X-Box USB-IF not approved class */ - { USB_DEVICE_INTERFACE_PROTOCOL(0x045e, 0x028e, 1) }, /* X-Box 360 controller */ + XPAD_XBOX360_VENDOR(0x045e), /* Microsoft X-Box 360 controllers */ + XPAD_XBOX360_VENDOR(0x046d), /* Logitech X-Box 360 style controllers */ + XPAD_XBOX360_VENDOR(0x0738), /* Mad Catz X-Box 360 controllers */ + XPAD_XBOX360_VENDOR(0x0e6f), /* 0x0e6f X-Box 360 controllers */ + XPAD_XBOX360_VENDOR(0x1430), /* RedOctane X-Box 360 controllers */ { } }; @@ -188,10 +216,15 @@ struct usb_xpad { struct input_dev *dev; /* input device interface */ struct usb_device *udev; /* usb device */ + int pad_present; + struct urb *irq_in; /* urb for interrupt in report */ unsigned char *idata; /* input data */ dma_addr_t idata_dma; + struct urb *bulk_out; + unsigned char *bdata; + #if defined(CONFIG_JOYSTICK_XPAD_FF) || defined(CONFIG_JOYSTICK_XPAD_LEDS) struct urb *irq_out; /* urb for interrupt out report */ unsigned char *odata; /* output data */ @@ -227,13 +260,13 @@ static void xpad_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *d input_report_abs(dev, ABS_X, (__s16) le16_to_cpup((__le16 *)(data + 12))); input_report_abs(dev, ABS_Y, - (__s16) le16_to_cpup((__le16 *)(data + 14))); + ~(__s16) le16_to_cpup((__le16 *)(data + 14))); /* right stick */ input_report_abs(dev, ABS_RX, (__s16) le16_to_cpup((__le16 *)(data + 16))); input_report_abs(dev, ABS_RY, - (__s16) le16_to_cpup((__le16 *)(data + 18))); + ~(__s16) le16_to_cpup((__le16 *)(data + 18))); /* triggers left/right */ input_report_abs(dev, ABS_Z, data[10]); @@ -321,13 +354,13 @@ static void xpad360_process_packet(struct usb_xpad *xpad, input_report_abs(dev, ABS_X, (__s16) le16_to_cpup((__le16 *)(data + 6))); input_report_abs(dev, ABS_Y, - (__s16) le16_to_cpup((__le16 *)(data + 8))); + ~(__s16) le16_to_cpup((__le16 *)(data + 8))); /* right stick */ input_report_abs(dev, ABS_RX, (__s16) le16_to_cpup((__le16 *)(data + 10))); input_report_abs(dev, ABS_RY, - (__s16) le16_to_cpup((__le16 *)(data + 12))); + ~(__s16) le16_to_cpup((__le16 *)(data + 12))); /* triggers left/right */ input_report_abs(dev, ABS_Z, data[4]); @@ -336,6 +369,39 @@ static void xpad360_process_packet(struct usb_xpad *xpad, input_sync(dev); } +/* + * xpad360w_process_packet + * + * Completes a request by converting the data into events for the + * input subsystem. It is version for xbox 360 wireless controller. + * + * Byte.Bit + * 00.1 - Status change: The controller or headset has connected/disconnected + * Bits 01.7 and 01.6 are valid + * 01.7 - Controller present + * 01.6 - Headset present + * 01.1 - Pad state (Bytes 4+) valid + * + */ + +static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data) +{ + /* Presence change */ + if (data[0] & 0x08) { + if (data[1] & 0x80) { + xpad->pad_present = 1; + usb_submit_urb(xpad->bulk_out, GFP_ATOMIC); + } else + xpad->pad_present = 0; + } + + /* Valid pad data */ + if (!(data[1] & 0x1)) + return; + + xpad360_process_packet(xpad, cmd, &data[4]); +} + static void xpad_irq_in(struct urb *urb) { struct usb_xpad *xpad = urb->context; @@ -358,10 +424,16 @@ static void xpad_irq_in(struct urb *urb) goto exit; } - if (xpad->xtype == XTYPE_XBOX360) + switch (xpad->xtype) { + case XTYPE_XBOX360: xpad360_process_packet(xpad, 0, xpad->idata); - else + break; + case XTYPE_XBOX360W: + xpad360w_process_packet(xpad, 0, xpad->idata); + break; + default: xpad_process_packet(xpad, 0, xpad->idata); + } exit: retval = usb_submit_urb (urb, GFP_ATOMIC); @@ -399,6 +471,23 @@ exit: __FUNCTION__, retval); } +static void xpad_bulk_out(struct urb *urb) +{ + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); + break; + default: + dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); + } +} + static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) { struct usb_endpoint_descriptor *ep_irq_out; @@ -408,7 +497,7 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) return 0; xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN, - GFP_ATOMIC, &xpad->odata_dma ); + GFP_KERNEL, &xpad->odata_dma); if (!xpad->odata) goto fail1; @@ -469,6 +558,7 @@ static int xpad_play_effect(struct input_dev *dev, void *data, xpad->odata[5] = 0x00; xpad->odata[6] = 0x00; xpad->odata[7] = 0x00; + xpad->irq_out->transfer_buffer_length = 8; usb_submit_urb(xpad->irq_out, GFP_KERNEL); } @@ -477,6 +567,9 @@ static int xpad_play_effect(struct input_dev *dev, void *data, static int xpad_init_ff(struct usb_xpad *xpad) { + if (xpad->xtype != XTYPE_XBOX360) + return 0; + input_set_capability(xpad->dev, EV_FF, FF_RUMBLE); return input_ff_create_memless(xpad->dev, NULL, xpad_play_effect); @@ -502,6 +595,7 @@ static void xpad_send_led_command(struct usb_xpad *xpad, int command) xpad->odata[0] = 0x01; xpad->odata[1] = 0x03; xpad->odata[2] = command; + xpad->irq_out->transfer_buffer_length = 3; usb_submit_urb(xpad->irq_out, GFP_KERNEL); mutex_unlock(&xpad->odata_mutex); } @@ -574,6 +668,10 @@ static int xpad_open(struct input_dev *dev) { struct usb_xpad *xpad = input_get_drvdata(dev); + /* URB was submitted in probe */ + if(xpad->xtype == XTYPE_XBOX360W) + return 0; + xpad->irq_in->dev = xpad->udev; if (usb_submit_urb(xpad->irq_in, GFP_KERNEL)) return -EIO; @@ -585,7 +683,8 @@ static void xpad_close(struct input_dev *dev) { struct usb_xpad *xpad = input_get_drvdata(dev); - usb_kill_urb(xpad->irq_in); + if(xpad->xtype != XTYPE_XBOX360W) + usb_kill_urb(xpad->irq_in); xpad_stop_output(xpad); } @@ -632,7 +731,7 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id goto fail1; xpad->idata = usb_buffer_alloc(udev, XPAD_PKT_LEN, - GFP_ATOMIC, &xpad->idata_dma); + GFP_KERNEL, &xpad->idata_dma); if (!xpad->idata) goto fail1; @@ -644,7 +743,16 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id xpad->dpad_mapping = xpad_device[i].dpad_mapping; xpad->xtype = xpad_device[i].xtype; if (xpad->dpad_mapping == MAP_DPAD_UNKNOWN) - xpad->dpad_mapping = dpad_to_buttons; + xpad->dpad_mapping = !dpad_to_buttons; + if (xpad->xtype == XTYPE_UNKNOWN) { + if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) { + if (intf->cur_altsetting->desc.bInterfaceProtocol == 129) + xpad->xtype = XTYPE_XBOX360W; + else + xpad->xtype = XTYPE_XBOX360; + } else + xpad->xtype = XTYPE_XBOX; + } xpad->dev = input_dev; usb_make_path(udev, xpad->phys, sizeof(xpad->phys)); strlcat(xpad->phys, "/input0", sizeof(xpad->phys)); @@ -662,11 +770,14 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); /* set up buttons */ - for (i = 0; xpad_btn[i] >= 0; i++) - set_bit(xpad_btn[i], input_dev->keybit); - if (xpad->xtype == XTYPE_XBOX360) + for (i = 0; xpad_common_btn[i] >= 0; i++) + set_bit(xpad_common_btn[i], input_dev->keybit); + if ((xpad->xtype == XTYPE_XBOX360) || (xpad->xtype == XTYPE_XBOX360W)) for (i = 0; xpad360_btn[i] >= 0; i++) set_bit(xpad360_btn[i], input_dev->keybit); + else + for (i = 0; xpad_btn[i] >= 0; i++) + set_bit(xpad_btn[i], input_dev->keybit); if (xpad->dpad_mapping == MAP_DPAD_TO_BUTTONS) for (i = 0; xpad_btn_pad[i] >= 0; i++) set_bit(xpad_btn_pad[i], input_dev->keybit); @@ -703,8 +814,57 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id goto fail4; usb_set_intfdata(intf, xpad); + + /* + * Submit the int URB immediatly rather than waiting for open + * because we get status messages from the device whether + * or not any controllers are attached. In fact, it's + * exactly the message that a controller has arrived that + * we're waiting for. + */ + if (xpad->xtype == XTYPE_XBOX360W) { + xpad->irq_in->dev = xpad->udev; + error = usb_submit_urb(xpad->irq_in, GFP_KERNEL); + if (error) + goto fail4; + + /* + * Setup the message to set the LEDs on the + * controller when it shows up + */ + xpad->bulk_out = usb_alloc_urb(0, GFP_KERNEL); + if(!xpad->bulk_out) + goto fail5; + + xpad->bdata = kzalloc(XPAD_PKT_LEN, GFP_KERNEL); + if(!xpad->bdata) + goto fail6; + + xpad->bdata[2] = 0x08; + switch (intf->cur_altsetting->desc.bInterfaceNumber) { + case 0: + xpad->bdata[3] = 0x42; + break; + case 2: + xpad->bdata[3] = 0x43; + break; + case 4: + xpad->bdata[3] = 0x44; + break; + case 6: + xpad->bdata[3] = 0x45; + } + + ep_irq_in = &intf->cur_altsetting->endpoint[1].desc; + usb_fill_bulk_urb(xpad->bulk_out, udev, + usb_sndbulkpipe(udev, ep_irq_in->bEndpointAddress), + xpad->bdata, XPAD_PKT_LEN, xpad_bulk_out, xpad); + } + return 0; + fail6: usb_free_urb(xpad->bulk_out); + fail5: usb_kill_urb(xpad->irq_in); fail4: usb_free_urb(xpad->irq_in); fail3: xpad_deinit_output(xpad); fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); @@ -723,6 +883,11 @@ static void xpad_disconnect(struct usb_interface *intf) xpad_led_disconnect(xpad); input_unregister_device(xpad->dev); xpad_deinit_output(xpad); + if (xpad->xtype == XTYPE_XBOX360W) { + usb_kill_urb(xpad->bulk_out); + usb_free_urb(xpad->bulk_out); + usb_kill_urb(xpad->irq_in); + } usb_free_urb(xpad->irq_in); usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); @@ -741,7 +906,7 @@ static int __init usb_xpad_init(void) { int result = usb_register(&xpad_driver); if (result == 0) - info(DRIVER_DESC ":" DRIVER_VERSION); + info(DRIVER_DESC); return result; } diff --git a/drivers/input/joystick/zhenhua.c b/drivers/input/joystick/zhenhua.c new file mode 100644 index 0000000..b585312 --- /dev/null +++ b/drivers/input/joystick/zhenhua.c @@ -0,0 +1,243 @@ +/* + * derived from "twidjoy.c" + * + * Copyright (c) 2008 Martin Kebert + * Copyright (c) 2001 Arndt Schoenewald + * Copyright (c) 2000-2001 Vojtech Pavlik + * Copyright (c) 2000 Mark Fletcher + * + */ + +/* + * Driver to use 4CH RC transmitter using Zhen Hua 5-byte protocol (Walkera Lama, + * EasyCopter etc.) as a joystick under Linux. + * + * RC transmitters using Zhen Hua 5-byte protocol are cheap four channels + * transmitters for control a RC planes or RC helicopters with possibility to + * connect on a serial port. + * Data coming from transmitter is in this order: + * 1. byte = synchronisation byte + * 2. byte = X axis + * 3. byte = Y axis + * 4. byte = RZ axis + * 5. byte = Z axis + * (and this is repeated) + * + * For questions or feedback regarding this driver module please contact: + * Martin Kebert <gkmarty@gmail.com> - but I am not a C-programmer nor kernel + * coder :-( + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/serio.h> +#include <linux/init.h> + +#define DRIVER_DESC "RC transmitter with 5-byte Zhen Hua protocol joystick driver" + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Constants. + */ + +#define ZHENHUA_MAX_LENGTH 5 + +/* + * Zhen Hua data. + */ + +struct zhenhua { + struct input_dev *dev; + int idx; + unsigned char data[ZHENHUA_MAX_LENGTH]; + char phys[32]; +}; + + +/* bits in all incoming bytes needs to be "reversed" */ +static int zhenhua_bitreverse(int x) +{ + x = ((x & 0xaa) >> 1) | ((x & 0x55) << 1); + x = ((x & 0xcc) >> 2) | ((x & 0x33) << 2); + x = ((x & 0xf0) >> 4) | ((x & 0x0f) << 4); + return x; +} + +/* + * zhenhua_process_packet() decodes packets the driver receives from the + * RC transmitter. It updates the data accordingly. + */ + +static void zhenhua_process_packet(struct zhenhua *zhenhua) +{ + struct input_dev *dev = zhenhua->dev; + unsigned char *data = zhenhua->data; + + input_report_abs(dev, ABS_Y, data[1]); + input_report_abs(dev, ABS_X, data[2]); + input_report_abs(dev, ABS_RZ, data[3]); + input_report_abs(dev, ABS_Z, data[4]); + + input_sync(dev); +} + +/* + * zhenhua_interrupt() is called by the low level driver when characters + * are ready for us. We then buffer them for further processing, or call the + * packet processing routine. + */ + +static irqreturn_t zhenhua_interrupt(struct serio *serio, unsigned char data, unsigned int flags) +{ + struct zhenhua *zhenhua = serio_get_drvdata(serio); + + /* All Zhen Hua packets are 5 bytes. The fact that the first byte + * is allways 0xf7 and all others are in range 0x32 - 0xc8 (50-200) + * can be used to check and regain sync. */ + + if (data == 0xef) + zhenhua->idx = 0; /* this byte starts a new packet */ + else if (zhenhua->idx == 0) + return IRQ_HANDLED; /* wrong MSB -- ignore this byte */ + + if (zhenhua->idx < ZHENHUA_MAX_LENGTH) + zhenhua->data[zhenhua->idx++] = zhenhua_bitreverse(data); + + if (zhenhua->idx == ZHENHUA_MAX_LENGTH) { + zhenhua_process_packet(zhenhua); + zhenhua->idx = 0; + } + + return IRQ_HANDLED; +} + +/* + * zhenhua_disconnect() is the opposite of zhenhua_connect() + */ + +static void zhenhua_disconnect(struct serio *serio) +{ + struct zhenhua *zhenhua = serio_get_drvdata(serio); + + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_unregister_device(zhenhua->dev); + kfree(zhenhua); +} + +/* + * zhenhua_connect() is the routine that is called when someone adds a + * new serio device. It looks for the Twiddler, and if found, registers + * it as an input device. + */ + +static int zhenhua_connect(struct serio *serio, struct serio_driver *drv) +{ + struct zhenhua *zhenhua; + struct input_dev *input_dev; + int err = -ENOMEM; + + zhenhua = kzalloc(sizeof(struct zhenhua), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!zhenhua || !input_dev) + goto fail1; + + zhenhua->dev = input_dev; + snprintf(zhenhua->phys, sizeof(zhenhua->phys), "%s/input0", serio->phys); + + input_dev->name = "Zhen Hua 5-byte device"; + input_dev->phys = zhenhua->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_ZHENHUA; + input_dev->id.product = 0x0001; + input_dev->id.version = 0x0100; + input_dev->dev.parent = &serio->dev; + + input_dev->evbit[0] = BIT(EV_ABS); + input_set_abs_params(input_dev, ABS_X, 50, 200, 0, 0); + input_set_abs_params(input_dev, ABS_Y, 50, 200, 0, 0); + input_set_abs_params(input_dev, ABS_Z, 50, 200, 0, 0); + input_set_abs_params(input_dev, ABS_RZ, 50, 200, 0, 0); + + serio_set_drvdata(serio, zhenhua); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(zhenhua->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(zhenhua); + return err; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id zhenhua_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_ZHENHUA, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, zhenhua_serio_ids); + +static struct serio_driver zhenhua_drv = { + .driver = { + .name = "zhenhua", + }, + .description = DRIVER_DESC, + .id_table = zhenhua_serio_ids, + .interrupt = zhenhua_interrupt, + .connect = zhenhua_connect, + .disconnect = zhenhua_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init zhenhua_init(void) +{ + return serio_register_driver(&zhenhua_drv); +} + +static void __exit zhenhua_exit(void) +{ + serio_unregister_driver(&zhenhua_drv); +} + +module_init(zhenhua_init); +module_exit(zhenhua_exit); diff --git a/drivers/input/keyboard/aaed2000_kbd.c b/drivers/input/keyboard/aaed2000_kbd.c index 72abc19..a293e8b 100644 --- a/drivers/input/keyboard/aaed2000_kbd.c +++ b/drivers/input/keyboard/aaed2000_kbd.c @@ -156,11 +156,15 @@ static int __devexit aaedkbd_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:aaed2000-keyboard"); + static struct platform_driver aaedkbd_driver = { .probe = aaedkbd_probe, .remove = __devexit_p(aaedkbd_remove), .driver = { .name = "aaed2000-keyboard", + .owner = THIS_MODULE, }, }; diff --git a/drivers/input/keyboard/bf54x-keys.c b/drivers/input/keyboard/bf54x-keys.c index 05e3494..54ed8e2 100644 --- a/drivers/input/keyboard/bf54x-keys.c +++ b/drivers/input/keyboard/bf54x-keys.c @@ -312,6 +312,8 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev) bfin_write_KPAD_CTL(bfin_read_KPAD_CTL() | KPAD_EN); + device_init_wakeup(&pdev->dev, 1); + printk(KERN_ERR DRV_NAME ": Blackfin BF54x Keypad registered IRQ %d\n", bf54x_kpad->irq); @@ -354,12 +356,40 @@ static int __devexit bfin_kpad_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int bfin_kpad_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev); + + if (device_may_wakeup(&pdev->dev)) + enable_irq_wake(bf54x_kpad->irq); + + return 0; +} + +static int bfin_kpad_resume(struct platform_device *pdev) +{ + struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev); + + if (device_may_wakeup(&pdev->dev)) + disable_irq_wake(bf54x_kpad->irq); + + return 0; +} +#else +# define bfin_kpad_suspend NULL +# define bfin_kpad_resume NULL +#endif + struct platform_driver bfin_kpad_device_driver = { - .probe = bfin_kpad_probe, - .remove = __devexit_p(bfin_kpad_remove), .driver = { .name = DRV_NAME, - } + .owner = THIS_MODULE, + }, + .probe = bfin_kpad_probe, + .remove = __devexit_p(bfin_kpad_remove), + .suspend = bfin_kpad_suspend, + .resume = bfin_kpad_resume, }; static int __init bfin_kpad_init(void) @@ -378,3 +408,4 @@ module_exit(bfin_kpad_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); MODULE_DESCRIPTION("Keypad driver for BF54x Processors"); +MODULE_ALIAS("platform:bf54x-keys"); diff --git a/drivers/input/keyboard/corgikbd.c b/drivers/input/keyboard/corgikbd.c index 790fed3..5187c0c 100644 --- a/drivers/input/keyboard/corgikbd.c +++ b/drivers/input/keyboard/corgikbd.c @@ -392,6 +392,7 @@ static struct platform_driver corgikbd_driver = { .resume = corgikbd_resume, .driver = { .name = "corgi-keyboard", + .owner = THIS_MODULE, }, }; @@ -411,3 +412,4 @@ module_exit(corgikbd_exit); MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); MODULE_DESCRIPTION("Corgi Keyboard Driver"); MODULE_LICENSE("GPLv2"); +MODULE_ALIAS("platform:corgi-keyboard"); diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 6a9ca4b..bbd00c3 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -43,10 +43,11 @@ static irqreturn_t gpio_keys_isr(int irq, void *dev_id) input_event(input, type, button->code, !!state); input_sync(input); + return IRQ_HANDLED; } } - return IRQ_HANDLED; + return IRQ_NONE; } static int __devinit gpio_keys_probe(struct platform_device *pdev) @@ -213,6 +214,7 @@ struct platform_driver gpio_keys_device_driver = { .resume = gpio_keys_resume, .driver = { .name = "gpio-keys", + .owner = THIS_MODULE, } }; @@ -232,3 +234,4 @@ module_exit(gpio_keys_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Phil Blundell <pb@handhelds.org>"); MODULE_DESCRIPTION("Keyboard driver for CPU GPIOs"); +MODULE_ALIAS("platform:gpio-keys"); diff --git a/drivers/input/keyboard/jornada680_kbd.c b/drivers/input/keyboard/jornada680_kbd.c index a23633a..9387da3 100644 --- a/drivers/input/keyboard/jornada680_kbd.c +++ b/drivers/input/keyboard/jornada680_kbd.c @@ -254,6 +254,7 @@ static int __devexit jornada680kbd_remove(struct platform_device *pdev) static struct platform_driver jornada680kbd_driver = { .driver = { .name = "jornada680_kbd", + .owner = THIS_MODULE, }, .probe = jornada680kbd_probe, .remove = __devexit_p(jornada680kbd_remove), @@ -275,3 +276,4 @@ module_exit(jornada680kbd_exit); MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver"); MODULE_LICENSE("GPLv2"); +MODULE_ALIAS("platform:jornada680_kbd"); diff --git a/drivers/input/keyboard/jornada720_kbd.c b/drivers/input/keyboard/jornada720_kbd.c index 986f93c..a1164a0 100644 --- a/drivers/input/keyboard/jornada720_kbd.c +++ b/drivers/input/keyboard/jornada720_kbd.c @@ -162,9 +162,13 @@ static int __devexit jornada720_kbd_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:jornada720_kbd"); + static struct platform_driver jornada720_kbd_driver = { .driver = { .name = "jornada720_kbd", + .owner = THIS_MODULE, }, .probe = jornada720_kbd_probe, .remove = __devexit_p(jornada720_kbd_remove), diff --git a/drivers/input/keyboard/locomokbd.c b/drivers/input/keyboard/locomokbd.c index 5a0ca18..9caed30 100644 --- a/drivers/input/keyboard/locomokbd.c +++ b/drivers/input/keyboard/locomokbd.c @@ -1,14 +1,12 @@ /* - * Copyright (c) 2005 John Lenz + * LoCoMo keyboard driver for Linux-based ARM PDAs: + * - SHARP Zaurus Collie (SL-5500) + * - SHARP Zaurus Poodle (SL-5600) * + * Copyright (c) 2005 John Lenz * Based on from xtkbd.c - */ - -/* - * LoCoMo keyboard driver for Linux/ARM - */ - -/* + * + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -47,7 +45,8 @@ MODULE_LICENSE("GPL"); #define KEY_CONTACT KEY_F18 #define KEY_CENTER KEY_F15 -static unsigned char locomokbd_keycode[LOCOMOKBD_NUMKEYS] = { +static const unsigned char +locomokbd_keycode[LOCOMOKBD_NUMKEYS] __devinitconst = { 0, KEY_ESC, KEY_ACTIVITY, 0, 0, 0, 0, 0, 0, 0, /* 0 - 9 */ 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_HOME, KEY_CONTACT, /* 10 - 19 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 20 - 29 */ @@ -67,22 +66,21 @@ static unsigned char locomokbd_keycode[LOCOMOKBD_NUMKEYS] = { #define KB_COLS 8 #define KB_ROWMASK(r) (1 << (r)) #define SCANCODE(c,r) ( ((c)<<4) + (r) + 1 ) -#define NR_SCANCODES 128 #define KB_DELAY 8 #define SCAN_INTERVAL (HZ/10) -#define LOCOMOKBD_PRESSED 1 struct locomokbd { unsigned char keycode[LOCOMOKBD_NUMKEYS]; struct input_dev *input; char phys[32]; - struct locomo_dev *ldev; unsigned long base; spinlock_t lock; struct timer_list timer; + unsigned long suspend_jiffies; + unsigned int count_cancel; }; /* helper functions for reading the keyboard matrix */ @@ -128,7 +126,7 @@ static inline void locomokbd_reset_col(unsigned long membase, int col) /* Scan the hardware keyboard and push any changes up through the input layer */ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) { - unsigned int row, col, rowd, scancode; + unsigned int row, col, rowd; unsigned long flags; unsigned int num_pressed; unsigned long membase = locomokbd->base; @@ -145,13 +143,33 @@ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) rowd = ~locomo_readl(membase + LOCOMO_KIB); for (row = 0; row < KB_ROWS; row++) { + unsigned int scancode, pressed, key; + scancode = SCANCODE(col, row); - if (rowd & KB_ROWMASK(row)) { - num_pressed += 1; - input_report_key(locomokbd->input, locomokbd->keycode[scancode], 1); - } else { - input_report_key(locomokbd->input, locomokbd->keycode[scancode], 0); - } + pressed = rowd & KB_ROWMASK(row); + key = locomokbd->keycode[scancode]; + + input_report_key(locomokbd->input, key, pressed); + if (likely(!pressed)) + continue; + + num_pressed++; + + /* The "Cancel/ESC" key is labeled "On/Off" on + * Collie and Poodle and should suspend the device + * if it was pressed for more than a second. */ + if (unlikely(key == KEY_ESC)) { + if (!time_after(jiffies, + locomokbd->suspend_jiffies + HZ)) + continue; + if (locomokbd->count_cancel++ + != (HZ/SCAN_INTERVAL + 1)) + continue; + input_event(locomokbd->input, EV_PWR, + KEY_SUSPEND, 1); + locomokbd->suspend_jiffies = jiffies; + } else + locomokbd->count_cancel = 0; } locomokbd_reset_col(membase, col); } @@ -162,6 +180,8 @@ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) /* if any keys are pressed, enable the timer */ if (num_pressed) mod_timer(&locomokbd->timer, jiffies + SCAN_INTERVAL); + else + locomokbd->count_cancel = 0; spin_unlock_irqrestore(&locomokbd->lock, flags); } @@ -186,10 +206,11 @@ static irqreturn_t locomokbd_interrupt(int irq, void *dev_id) static void locomokbd_timer_callback(unsigned long data) { struct locomokbd *locomokbd = (struct locomokbd *) data; + locomokbd_scankeyboard(locomokbd); } -static int locomokbd_probe(struct locomo_dev *dev) +static int __devinit locomokbd_probe(struct locomo_dev *dev) { struct locomokbd *locomokbd; struct input_dev *input_dev; @@ -211,7 +232,6 @@ static int locomokbd_probe(struct locomo_dev *dev) goto err_free_mem; } - locomokbd->ldev = dev; locomo_set_drvdata(dev, locomokbd); locomokbd->base = (unsigned long) dev->mapbase; @@ -222,6 +242,8 @@ static int locomokbd_probe(struct locomo_dev *dev) locomokbd->timer.function = locomokbd_timer_callback; locomokbd->timer.data = (unsigned long) locomokbd; + locomokbd->suspend_jiffies = jiffies; + locomokbd->input = input_dev; strcpy(locomokbd->phys, "locomokbd/input0"); @@ -233,9 +255,10 @@ static int locomokbd_probe(struct locomo_dev *dev) input_dev->id.version = 0x0100; input_dev->dev.parent = &dev->dev; - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | + BIT_MASK(EV_PWR); input_dev->keycode = locomokbd->keycode; - input_dev->keycodesize = sizeof(unsigned char); + input_dev->keycodesize = sizeof(locomokbd_keycode[0]); input_dev->keycodemax = ARRAY_SIZE(locomokbd_keycode); memcpy(locomokbd->keycode, locomokbd_keycode, sizeof(locomokbd->keycode)); @@ -268,7 +291,7 @@ static int locomokbd_probe(struct locomo_dev *dev) return err; } -static int locomokbd_remove(struct locomo_dev *dev) +static int __devexit locomokbd_remove(struct locomo_dev *dev) { struct locomokbd *locomokbd = locomo_get_drvdata(dev); @@ -292,7 +315,7 @@ static struct locomo_driver keyboard_driver = { }, .devid = LOCOMO_DEVID_KEYBOARD, .probe = locomokbd_probe, - .remove = locomokbd_remove, + .remove = __devexit_p(locomokbd_remove), }; static int __init locomokbd_init(void) diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c index babc913..10afd20 100644 --- a/drivers/input/keyboard/omap-keypad.c +++ b/drivers/input/keyboard/omap-keypad.c @@ -352,6 +352,9 @@ static int __init omap_kp_probe(struct platform_device *pdev) } omap_set_gpio_direction(row_gpios[row_idx], 1); } + } else { + col_idx = 0; + row_idx = 0; } setup_timer(&omap_kp->timer, omap_kp_timer, (unsigned long)omap_kp); @@ -415,10 +418,10 @@ err4: err3: device_remove_file(&pdev->dev, &dev_attr_enable); err2: - for (i = row_idx-1; i >=0; i--) + for (i = row_idx - 1; i >=0; i--) omap_free_gpio(row_gpios[i]); err1: - for (i = col_idx-1; i >=0; i--) + for (i = col_idx - 1; i >=0; i--) omap_free_gpio(col_gpios[i]); kfree(omap_kp); @@ -464,6 +467,7 @@ static struct platform_driver omap_kp_driver = { .resume = omap_kp_resume, .driver = { .name = "omap-keypad", + .owner = THIS_MODULE, }, }; @@ -484,3 +488,4 @@ module_exit(omap_kp_exit); MODULE_AUTHOR("Timo Teräs"); MODULE_DESCRIPTION("OMAP Keypad Driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:omap-keypad"); diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c index 4e651c1..3dea0c5 100644 --- a/drivers/input/keyboard/pxa27x_keypad.c +++ b/drivers/input/keyboard/pxa27x_keypad.c @@ -545,6 +545,9 @@ static int __devexit pxa27x_keypad_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:pxa27x-keypad"); + static struct platform_driver pxa27x_keypad_driver = { .probe = pxa27x_keypad_probe, .remove = __devexit_p(pxa27x_keypad_remove), @@ -552,6 +555,7 @@ static struct platform_driver pxa27x_keypad_driver = { .resume = pxa27x_keypad_resume, .driver = { .name = "pxa27x-keypad", + .owner = THIS_MODULE, }, }; diff --git a/drivers/input/keyboard/spitzkbd.c b/drivers/input/keyboard/spitzkbd.c index 1d59a2d..92102f9 100644 --- a/drivers/input/keyboard/spitzkbd.c +++ b/drivers/input/keyboard/spitzkbd.c @@ -494,3 +494,4 @@ module_exit(spitzkbd_exit); MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); MODULE_DESCRIPTION("Spitz Keyboard Driver"); MODULE_LICENSE("GPLv2"); +MODULE_ALIAS("platform:spitz-keyboard"); diff --git a/drivers/input/keyboard/tosakbd.c b/drivers/input/keyboard/tosakbd.c index 3884d1e..94e444b 100644 --- a/drivers/input/keyboard/tosakbd.c +++ b/drivers/input/keyboard/tosakbd.c @@ -52,7 +52,7 @@ KEY_X, KEY_F, KEY_SPACE, KEY_APOSTROPHE, TOSA_KEY_MAIL, KEY_LEFT, KEY_DOWN, KEY_ struct tosakbd { unsigned int keycode[ARRAY_SIZE(tosakbd_keycode)]; struct input_dev *input; - + int suspended; spinlock_t lock; /* protect kbd scanning */ struct timer_list timer; }; @@ -133,6 +133,9 @@ static void tosakbd_scankeyboard(struct platform_device *dev) spin_lock_irqsave(&tosakbd->lock, flags); + if (tosakbd->suspended) + goto out; + for (col = 0; col < TOSA_KEY_STROBE_NUM; col++) { /* * Discharge the output driver capacitatance @@ -174,6 +177,7 @@ static void tosakbd_scankeyboard(struct platform_device *dev) if (num_pressed) mod_timer(&tosakbd->timer, jiffies + SCAN_INTERVAL); + out: spin_unlock_irqrestore(&tosakbd->lock, flags); } @@ -200,6 +204,7 @@ static irqreturn_t tosakbd_interrupt(int irq, void *__dev) static void tosakbd_timer_callback(unsigned long __dev) { struct platform_device *dev = (struct platform_device *)__dev; + tosakbd_scankeyboard(dev); } @@ -207,6 +212,13 @@ static void tosakbd_timer_callback(unsigned long __dev) static int tosakbd_suspend(struct platform_device *dev, pm_message_t state) { struct tosakbd *tosakbd = platform_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&tosakbd->lock, flags); + PGSR1 = (PGSR1 & ~TOSA_GPIO_LOW_STROBE_BIT); + PGSR2 = (PGSR2 & ~TOSA_GPIO_HIGH_STROBE_BIT); + tosakbd->suspended = 1; + spin_unlock_irqrestore(&tosakbd->lock, flags); del_timer_sync(&tosakbd->timer); @@ -215,6 +227,9 @@ static int tosakbd_suspend(struct platform_device *dev, pm_message_t state) static int tosakbd_resume(struct platform_device *dev) { + struct tosakbd *tosakbd = platform_get_drvdata(dev); + + tosakbd->suspended = 0; tosakbd_scankeyboard(dev); return 0; @@ -365,8 +380,8 @@ fail: return error; } -static int __devexit tosakbd_remove(struct platform_device *dev) { - +static int __devexit tosakbd_remove(struct platform_device *dev) +{ int i; struct tosakbd *tosakbd = platform_get_drvdata(dev); @@ -394,6 +409,7 @@ static struct platform_driver tosakbd_driver = { .resume = tosakbd_resume, .driver = { .name = "tosa-keyboard", + .owner = THIS_MODULE, }, }; @@ -413,3 +429,4 @@ module_exit(tosakbd_exit); MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>"); MODULE_DESCRIPTION("Tosa Keyboard Driver"); MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:tosa-keyboard"); diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c index 5511ef0..6a1f48b 100644 --- a/drivers/input/misc/cobalt_btns.c +++ b/drivers/input/misc/cobalt_btns.c @@ -148,6 +148,9 @@ static int __devexit cobalt_buttons_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:Cobalt buttons"); + static struct platform_driver cobalt_buttons_driver = { .probe = cobalt_buttons_probe, .remove = __devexit_p(cobalt_buttons_remove), diff --git a/drivers/input/mouse/gpio_mouse.c b/drivers/input/mouse/gpio_mouse.c index 0936d6b..3392901 100644 --- a/drivers/input/mouse/gpio_mouse.c +++ b/drivers/input/mouse/gpio_mouse.c @@ -171,10 +171,14 @@ static int __devexit gpio_mouse_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:gpio_mouse"); + struct platform_driver gpio_mouse_device_driver = { .remove = __devexit_p(gpio_mouse_remove), .driver = { .name = "gpio_mouse", + .owner = THIS_MODULE, } }; diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig index b88569e..ec4b661 100644 --- a/drivers/input/serio/Kconfig +++ b/drivers/input/serio/Kconfig @@ -88,6 +88,16 @@ config SERIO_RPCKBD To compile this driver as a module, choose M here: the module will be called rpckbd. +config SERIO_AT32PSIF + tristate "AVR32 PSIF PS/2 keyboard and mouse controller" + depends on AVR32 + help + Say Y here if you want to use the PSIF peripheral on AVR32 devices + and connect a PS/2 keyboard and/or mouse to it. + + To compile this driver as a module, choose M here: the module will + be called at32psif. + config SERIO_AMBAKMI tristate "AMBA KMI keyboard controller" depends on ARM_AMBA diff --git a/drivers/input/serio/Makefile b/drivers/input/serio/Makefile index 4155197..38b8868 100644 --- a/drivers/input/serio/Makefile +++ b/drivers/input/serio/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_SERIO_CT82C710) += ct82c710.o obj-$(CONFIG_SERIO_RPCKBD) += rpckbd.o obj-$(CONFIG_SERIO_SA1111) += sa1111ps2.o obj-$(CONFIG_SERIO_AMBAKMI) += ambakmi.o +obj-$(CONFIG_SERIO_AT32PSIF) += at32psif.o obj-$(CONFIG_SERIO_Q40KBD) += q40kbd.o obj-$(CONFIG_SERIO_GSCPS2) += gscps2.o obj-$(CONFIG_HP_SDC) += hp_sdc.o diff --git a/drivers/input/serio/at32psif.c b/drivers/input/serio/at32psif.c new file mode 100644 index 0000000..41fda8c --- /dev/null +++ b/drivers/input/serio/at32psif.c @@ -0,0 +1,375 @@ +/* + * Copyright (C) 2007 Atmel Corporation + * + * Driver for the AT32AP700X PS/2 controller (PSIF). + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/serio.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/platform_device.h> + +/* PSIF register offsets */ +#define PSIF_CR 0x00 +#define PSIF_RHR 0x04 +#define PSIF_THR 0x08 +#define PSIF_SR 0x10 +#define PSIF_IER 0x14 +#define PSIF_IDR 0x18 +#define PSIF_IMR 0x1c +#define PSIF_PSR 0x24 + +/* Bitfields in control register. */ +#define PSIF_CR_RXDIS_OFFSET 1 +#define PSIF_CR_RXDIS_SIZE 1 +#define PSIF_CR_RXEN_OFFSET 0 +#define PSIF_CR_RXEN_SIZE 1 +#define PSIF_CR_SWRST_OFFSET 15 +#define PSIF_CR_SWRST_SIZE 1 +#define PSIF_CR_TXDIS_OFFSET 9 +#define PSIF_CR_TXDIS_SIZE 1 +#define PSIF_CR_TXEN_OFFSET 8 +#define PSIF_CR_TXEN_SIZE 1 + +/* Bitfields in interrupt disable, enable, mask and status register. */ +#define PSIF_NACK_OFFSET 8 +#define PSIF_NACK_SIZE 1 +#define PSIF_OVRUN_OFFSET 5 +#define PSIF_OVRUN_SIZE 1 +#define PSIF_PARITY_OFFSET 9 +#define PSIF_PARITY_SIZE 1 +#define PSIF_RXRDY_OFFSET 4 +#define PSIF_RXRDY_SIZE 1 +#define PSIF_TXEMPTY_OFFSET 1 +#define PSIF_TXEMPTY_SIZE 1 +#define PSIF_TXRDY_OFFSET 0 +#define PSIF_TXRDY_SIZE 1 + +/* Bitfields in prescale register. */ +#define PSIF_PSR_PRSCV_OFFSET 0 +#define PSIF_PSR_PRSCV_SIZE 12 + +/* Bitfields in receive hold register. */ +#define PSIF_RHR_RXDATA_OFFSET 0 +#define PSIF_RHR_RXDATA_SIZE 8 + +/* Bitfields in transmit hold register. */ +#define PSIF_THR_TXDATA_OFFSET 0 +#define PSIF_THR_TXDATA_SIZE 8 + +/* Bit manipulation macros */ +#define PSIF_BIT(name) \ + (1 << PSIF_##name##_OFFSET) + +#define PSIF_BF(name, value) \ + (((value) & ((1 << PSIF_##name##_SIZE) - 1)) \ + << PSIF_##name##_OFFSET) + +#define PSIF_BFEXT(name, value) \ + (((value) >> PSIF_##name##_OFFSET) \ + & ((1 << PSIF_##name##_SIZE) - 1)) + +#define PSIF_BFINS(name, value, old) \ + (((old) & ~(((1 << PSIF_##name##_SIZE) - 1) \ + << PSIF_##name##_OFFSET)) \ + | PSIF_BF(name, value)) + +/* Register access macros */ +#define psif_readl(port, reg) \ + __raw_readl((port)->regs + PSIF_##reg) + +#define psif_writel(port, reg, value) \ + __raw_writel((value), (port)->regs + PSIF_##reg) + +struct psif { + struct platform_device *pdev; + struct clk *pclk; + struct serio *io; + void __iomem *regs; + unsigned int irq; + unsigned int open; + /* Prevent concurrent writes to PSIF THR. */ + spinlock_t lock; +}; + +static irqreturn_t psif_interrupt(int irq, void *_ptr) +{ + struct psif *psif = _ptr; + int retval = IRQ_NONE; + unsigned int io_flags = 0; + unsigned long status; + + status = psif_readl(psif, SR); + + if (status & PSIF_BIT(RXRDY)) { + unsigned char val = (unsigned char) psif_readl(psif, RHR); + + if (status & PSIF_BIT(PARITY)) + io_flags |= SERIO_PARITY; + if (status & PSIF_BIT(OVRUN)) + dev_err(&psif->pdev->dev, "overrun read error\n"); + + serio_interrupt(psif->io, val, io_flags); + + retval = IRQ_HANDLED; + } + + return retval; +} + +static int psif_write(struct serio *io, unsigned char val) +{ + struct psif *psif = io->port_data; + unsigned long flags; + int timeout = 10; + int retval = 0; + + spin_lock_irqsave(&psif->lock, flags); + + while (!(psif_readl(psif, SR) & PSIF_BIT(TXEMPTY)) && timeout--) + msleep(10); + + if (timeout >= 0) { + psif_writel(psif, THR, val); + } else { + dev_dbg(&psif->pdev->dev, "timeout writing to THR\n"); + retval = -EBUSY; + } + + spin_unlock_irqrestore(&psif->lock, flags); + + return retval; +} + +static int psif_open(struct serio *io) +{ + struct psif *psif = io->port_data; + int retval; + + retval = clk_enable(psif->pclk); + if (retval) + goto out; + + psif_writel(psif, CR, PSIF_BIT(CR_TXEN) | PSIF_BIT(CR_RXEN)); + psif_writel(psif, IER, PSIF_BIT(RXRDY)); + + psif->open = 1; +out: + return retval; +} + +static void psif_close(struct serio *io) +{ + struct psif *psif = io->port_data; + + psif->open = 0; + + psif_writel(psif, IDR, ~0UL); + psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS)); + + clk_disable(psif->pclk); +} + +static void psif_set_prescaler(struct psif *psif) +{ + unsigned long prscv; + unsigned long rate = clk_get_rate(psif->pclk); + + /* PRSCV = Pulse length (100 us) * PSIF module frequency. */ + prscv = 100 * (rate / 1000000UL); + + if (prscv > ((1<<PSIF_PSR_PRSCV_SIZE) - 1)) { + prscv = (1<<PSIF_PSR_PRSCV_SIZE) - 1; + dev_dbg(&psif->pdev->dev, "pclk too fast, " + "prescaler set to max\n"); + } + + clk_enable(psif->pclk); + psif_writel(psif, PSR, prscv); + clk_disable(psif->pclk); +} + +static int __init psif_probe(struct platform_device *pdev) +{ + struct resource *regs; + struct psif *psif; + struct serio *io; + struct clk *pclk; + int irq; + int ret; + + psif = kzalloc(sizeof(struct psif), GFP_KERNEL); + if (!psif) { + dev_dbg(&pdev->dev, "out of memory\n"); + ret = -ENOMEM; + goto out; + } + psif->pdev = pdev; + + io = kzalloc(sizeof(struct serio), GFP_KERNEL); + if (!io) { + dev_dbg(&pdev->dev, "out of memory\n"); + ret = -ENOMEM; + goto out_free_psif; + } + psif->io = io; + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!regs) { + dev_dbg(&pdev->dev, "no mmio resources defined\n"); + ret = -ENOMEM; + goto out_free_io; + } + + psif->regs = ioremap(regs->start, regs->end - regs->start + 1); + if (!psif->regs) { + ret = -ENOMEM; + dev_dbg(&pdev->dev, "could not map I/O memory\n"); + goto out_free_io; + } + + pclk = clk_get(&pdev->dev, "pclk"); + if (IS_ERR(pclk)) { + dev_dbg(&pdev->dev, "could not get peripheral clock\n"); + ret = PTR_ERR(pclk); + goto out_iounmap; + } + psif->pclk = pclk; + + /* Reset the PSIF to enter at a known state. */ + ret = clk_enable(pclk); + if (ret) { + dev_dbg(&pdev->dev, "could not enable pclk\n"); + goto out_put_clk; + } + psif_writel(psif, CR, PSIF_BIT(CR_SWRST)); + clk_disable(pclk); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_dbg(&pdev->dev, "could not get irq\n"); + ret = -ENXIO; + goto out_put_clk; + } + ret = request_irq(irq, psif_interrupt, IRQF_SHARED, "at32psif", psif); + if (ret) { + dev_dbg(&pdev->dev, "could not request irq %d\n", irq); + goto out_put_clk; + } + psif->irq = irq; + + io->id.type = SERIO_8042; + io->write = psif_write; + io->open = psif_open; + io->close = psif_close; + snprintf(io->name, sizeof(io->name), "AVR32 PS/2 port%d", pdev->id); + snprintf(io->phys, sizeof(io->phys), "at32psif/serio%d", pdev->id); + io->port_data = psif; + io->dev.parent = &pdev->dev; + + psif_set_prescaler(psif); + + spin_lock_init(&psif->lock); + serio_register_port(psif->io); + platform_set_drvdata(pdev, psif); + + dev_info(&pdev->dev, "Atmel AVR32 PSIF PS/2 driver on 0x%08x irq %d\n", + (int)psif->regs, psif->irq); + + return 0; + +out_put_clk: + clk_put(psif->pclk); +out_iounmap: + iounmap(psif->regs); +out_free_io: + kfree(io); +out_free_psif: + kfree(psif); +out: + return ret; +} + +static int __exit psif_remove(struct platform_device *pdev) +{ + struct psif *psif = platform_get_drvdata(pdev); + + psif_writel(psif, IDR, ~0UL); + psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS)); + + serio_unregister_port(psif->io); + iounmap(psif->regs); + free_irq(psif->irq, psif); + clk_put(psif->pclk); + kfree(psif); + + platform_set_drvdata(pdev, NULL); + + return 0; +} + +#ifdef CONFIG_PM +static int psif_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct psif *psif = platform_get_drvdata(pdev); + + if (psif->open) { + psif_writel(psif, CR, PSIF_BIT(CR_RXDIS) | PSIF_BIT(CR_TXDIS)); + clk_disable(psif->pclk); + } + + return 0; +} + +static int psif_resume(struct platform_device *pdev) +{ + struct psif *psif = platform_get_drvdata(pdev); + + if (psif->open) { + clk_enable(psif->pclk); + psif_set_prescaler(psif); + psif_writel(psif, CR, PSIF_BIT(CR_RXEN) | PSIF_BIT(CR_TXEN)); + } + + return 0; +} +#else +#define psif_suspend NULL +#define psif_resume NULL +#endif + +static struct platform_driver psif_driver = { + .remove = __exit_p(psif_remove), + .driver = { + .name = "atmel_psif", + }, + .suspend = psif_suspend, + .resume = psif_resume, +}; + +static int __init psif_init(void) +{ + return platform_driver_probe(&psif_driver, psif_probe); +} + +static void __exit psif_exit(void) +{ + platform_driver_unregister(&psif_driver); +} + +module_init(psif_init); +module_exit(psif_exit); + +MODULE_AUTHOR("Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>"); +MODULE_DESCRIPTION("Atmel AVR32 PSIF PS/2 driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 60931ac..5ece9f5 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -370,10 +370,10 @@ static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id * if (pnp_irq_valid(dev,0)) i8042_pnp_kbd_irq = pnp_irq(dev, 0); - strncpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name)); + strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name)); if (strlen(pnp_dev_name(dev))) { - strncat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name)); - strncat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name)); + strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name)); + strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name)); } i8042_pnp_kbd_devices++; @@ -391,10 +391,10 @@ static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id * if (pnp_irq_valid(dev, 0)) i8042_pnp_aux_irq = pnp_irq(dev, 0); - strncpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name)); + strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name)); if (strlen(pnp_dev_name(dev))) { - strncat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name)); - strncat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name)); + strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name)); + strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name)); } i8042_pnp_aux_devices++; diff --git a/drivers/input/serio/rpckbd.c b/drivers/input/serio/rpckbd.c index 49f8431..34c59d9 100644 --- a/drivers/input/serio/rpckbd.c +++ b/drivers/input/serio/rpckbd.c @@ -45,6 +45,7 @@ MODULE_AUTHOR("Vojtech Pavlik, Russell King"); MODULE_DESCRIPTION("Acorn RiscPC PS/2 keyboard controller driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:kart"); static int rpckbd_write(struct serio *port, unsigned char val) { @@ -140,6 +141,7 @@ static struct platform_driver rpckbd_driver = { .remove = __devexit_p(rpckbd_remove), .driver = { .name = "kart", + .owner = THIS_MODULE, }, }; diff --git a/drivers/input/tablet/Kconfig b/drivers/input/tablet/Kconfig index d371c0b..effb49e 100644 --- a/drivers/input/tablet/Kconfig +++ b/drivers/input/tablet/Kconfig @@ -25,14 +25,14 @@ config TABLET_USB_ACECAD module will be called acecad. config TABLET_USB_AIPTEK - tristate "Aiptek 6000U/8000U tablet support (USB)" + tristate "Aiptek 6000U/8000U and Genius G_PEN tablet support (USB)" depends on USB_ARCH_HAS_HCD select USB help - Say Y here if you want to use the USB version of the Aiptek 6000U - or Aiptek 8000U tablet. Make sure to say Y to "Mouse support" - (CONFIG_INPUT_MOUSEDEV) and/or "Event interface support" - (CONFIG_INPUT_EVDEV) as well. + Say Y here if you want to use the USB version of the Aiptek 6000U, + Aiptek 8000U or Genius G-PEN 560 tablet. Make sure to say Y to + "Mouse support" (CONFIG_INPUT_MOUSEDEV) and/or "Event interface + support" (CONFIG_INPUT_EVDEV) as well. To compile this driver as a module, choose M here: the module will be called aiptek. diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c index 94683f5..1d759f6 100644 --- a/drivers/input/tablet/aiptek.c +++ b/drivers/input/tablet/aiptek.c @@ -184,6 +184,7 @@ */ #define USB_VENDOR_ID_AIPTEK 0x08ca +#define USB_VENDOR_ID_KYE 0x0458 #define USB_REQ_GET_REPORT 0x01 #define USB_REQ_SET_REPORT 0x09 @@ -832,6 +833,7 @@ static const struct usb_device_id aiptek_ids[] = { {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)}, + {USB_DEVICE(USB_VENDOR_ID_KYE, 0x5003)}, {} }; diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h index acf9830..706619d 100644 --- a/drivers/input/tablet/wacom.h +++ b/drivers/input/tablet/wacom.h @@ -101,8 +101,11 @@ struct wacom { dma_addr_t data_dma; struct input_dev *dev; struct usb_device *usbdev; + struct usb_interface *intf; struct urb *irq; struct wacom_wac * wacom_wac; + struct mutex lock; + int open:1; char phys[32]; }; diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 41caaef..71cc0c1 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -70,6 +70,7 @@ static void wacom_sys_irq(struct urb *urb) input_sync(get_input_dev(&wcombo)); exit: + usb_mark_last_busy(wacom->usbdev); retval = usb_submit_urb (urb, GFP_ATOMIC); if (retval) err ("%s - usb_submit_urb failed with result %d", @@ -124,10 +125,25 @@ static int wacom_open(struct input_dev *dev) { struct wacom *wacom = input_get_drvdata(dev); + mutex_lock(&wacom->lock); + wacom->irq->dev = wacom->usbdev; - if (usb_submit_urb(wacom->irq, GFP_KERNEL)) + + if (usb_autopm_get_interface(wacom->intf) < 0) { + mutex_unlock(&wacom->lock); return -EIO; + } + + if (usb_submit_urb(wacom->irq, GFP_KERNEL)) { + usb_autopm_put_interface(wacom->intf); + mutex_unlock(&wacom->lock); + return -EIO; + } + + wacom->open = 1; + wacom->intf->needs_remote_wakeup = 1; + mutex_unlock(&wacom->lock); return 0; } @@ -135,7 +151,11 @@ static void wacom_close(struct input_dev *dev) { struct wacom *wacom = input_get_drvdata(dev); + mutex_lock(&wacom->lock); usb_kill_urb(wacom->irq); + wacom->open = 0; + wacom->intf->needs_remote_wakeup = 0; + mutex_unlock(&wacom->lock); } void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac) @@ -243,6 +263,8 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i wacom->usbdev = dev; wacom->dev = input_dev; + wacom->intf = intf; + mutex_init(&wacom->lock); usb_make_path(dev, wacom->phys, sizeof(wacom->phys)); strlcat(wacom->phys, "/input0", sizeof(wacom->phys)); @@ -304,23 +326,57 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i static void wacom_disconnect(struct usb_interface *intf) { - struct wacom *wacom = usb_get_intfdata (intf); + struct wacom *wacom = usb_get_intfdata(intf); usb_set_intfdata(intf, NULL); - if (wacom) { - usb_kill_urb(wacom->irq); - input_unregister_device(wacom->dev); - usb_free_urb(wacom->irq); - usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma); - kfree(wacom->wacom_wac); - kfree(wacom); - } + + usb_kill_urb(wacom->irq); + input_unregister_device(wacom->dev); + usb_free_urb(wacom->irq); + usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma); + kfree(wacom->wacom_wac); + kfree(wacom); +} + +static int wacom_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct wacom *wacom = usb_get_intfdata(intf); + + mutex_lock(&wacom->lock); + usb_kill_urb(wacom->irq); + mutex_unlock(&wacom->lock); + + return 0; +} + +static int wacom_resume(struct usb_interface *intf) +{ + struct wacom *wacom = usb_get_intfdata(intf); + int rv; + + mutex_lock(&wacom->lock); + if (wacom->open) + rv = usb_submit_urb(wacom->irq, GFP_NOIO); + else + rv = 0; + mutex_unlock(&wacom->lock); + + return rv; +} + +static int wacom_reset_resume(struct usb_interface *intf) +{ + return wacom_resume(intf); } static struct usb_driver wacom_driver = { .name = "wacom", .probe = wacom_probe, .disconnect = wacom_disconnect, + .suspend = wacom_suspend, + .resume = wacom_resume, + .reset_resume = wacom_reset_resume, + .supports_autosuspend = 1, }; static int __init wacom_init(void) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index ffe3384..192513e 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -649,6 +649,7 @@ static struct wacom_features wacom_features[] = { { "Wacom Intuos3 6x11", 10, 54204, 31750, 1023, 63, INTUOS3 }, { "Wacom Intuos3 4x6", 10, 31496, 19685, 1023, 63, INTUOS3S }, { "Wacom Cintiq 21UX", 10, 87200, 65600, 1023, 63, CINTIQ }, + { "Wacom Cintiq 20WSX", 10, 86680, 54180, 1023, 63, WACOM_BEE }, { "Wacom Cintiq 12WX", 10, 53020, 33440, 1023, 63, WACOM_BEE }, { "Wacom Intuos2 6x8", 10, 20320, 16240, 1023, 31, INTUOS }, { } @@ -702,6 +703,7 @@ static struct usb_device_id wacom_ids[] = { { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB5) }, { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB7) }, { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x3F) }, + { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC5) }, { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC6) }, { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x47) }, { } diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 90e8e92..565ec71 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -185,6 +185,59 @@ config TOUCHSCREEN_UCB1400 To compile this driver as a module, choose M here: the module will be called ucb1400_ts. +config TOUCHSCREEN_WM97XX + tristate "Support for WM97xx AC97 touchscreen controllers" + depends on AC97_BUS + help + Say Y here if you have a Wolfson Microelectronics WM97xx + touchscreen connected to your system. Note that this option + only enables core driver, you will also need to select + support for appropriate chip below. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called wm97xx-ts. + +config TOUCHSCREEN_WM9705 + bool "WM9705 Touchscreen interface support" + depends on TOUCHSCREEN_WM97XX + help + Say Y here if you have a Wolfson Microelectronics WM9705 + touchscreen controller connected to your system. + + If unsure, say N. + +config TOUCHSCREEN_WM9712 + bool "WM9712 Touchscreen interface support" + depends on TOUCHSCREEN_WM97XX + help + Say Y here if you have a Wolfson Microelectronics WM9712 + touchscreen controller connected to your system. + + If unsure, say N. + +config TOUCHSCREEN_WM9713 + bool "WM9713 Touchscreen interface support" + depends on TOUCHSCREEN_WM97XX + help + Say Y here if you have a Wolfson Microelectronics WM9713 touchscreen + controller connected to your system. + + If unsure, say N. + +config TOUCHSCREEN_WM97XX_MAINSTONE + tristate "WM97xx Mainstone accelerated touch" + depends on TOUCHSCREEN_WM97XX && ARCH_PXA + help + Say Y here for support for streaming mode with WM97xx touchscreens + on Mainstone systems. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called mainstone-wm97xx. + config TOUCHSCREEN_USB_COMPOSITE tristate "USB Touchscreen Driver" depends on USB_ARCH_HAS_HCD diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 35d4097..3c096d7 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -4,6 +4,8 @@ # Each configuration option enables a list of files. +wm97xx-ts-y := wm97xx-core.o + obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o @@ -19,3 +21,8 @@ obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o +obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o +wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o +wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o +wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713) += wm9713.o +obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 57a1c28..a571aa9 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -87,6 +87,7 @@ struct ads7846 { #endif u16 model; + u16 vref_mv; u16 vref_delay_usecs; u16 x_plate_ohms; u16 pressure_max; @@ -184,9 +185,6 @@ struct ads7846 { * The range is GND..vREF. The ads7843 and ads7835 must use external vREF; * ads7846 lets that pin be unconnected, to use internal vREF. */ -static unsigned vREF_mV; -module_param(vREF_mV, uint, 0); -MODULE_PARM_DESC(vREF_mV, "external vREF voltage, in milliVolts"); struct ser_req { u8 ref_on; @@ -213,7 +211,6 @@ static int ads7846_read12_ser(struct device *dev, unsigned command) struct ads7846 *ts = dev_get_drvdata(dev); struct ser_req *req = kzalloc(sizeof *req, GFP_KERNEL); int status; - int uninitialized_var(sample); int use_internal; if (!req) @@ -270,13 +267,13 @@ static int ads7846_read12_ser(struct device *dev, unsigned command) if (status == 0) { /* on-wire is a must-ignore bit, a BE12 value, then padding */ - sample = be16_to_cpu(req->sample); - sample = sample >> 3; - sample &= 0x0fff; + status = be16_to_cpu(req->sample); + status = status >> 3; + status &= 0x0fff; } kfree(req); - return status ? status : sample; + return status; } #if defined(CONFIG_HWMON) || defined(CONFIG_HWMON_MODULE) @@ -317,7 +314,7 @@ static inline unsigned vaux_adjust(struct ads7846 *ts, ssize_t v) unsigned retval = v; /* external resistors may scale vAUX into 0..vREF */ - retval *= vREF_mV; + retval *= ts->vref_mv; retval = retval >> 12; return retval; } @@ -375,14 +372,14 @@ static int ads784x_hwmon_register(struct spi_device *spi, struct ads7846 *ts) /* hwmon sensors need a reference voltage */ switch (ts->model) { case 7846: - if (!vREF_mV) { + if (!ts->vref_mv) { dev_dbg(&spi->dev, "assuming 2.5V internal vREF\n"); - vREF_mV = 2500; + ts->vref_mv = 2500; } break; case 7845: case 7843: - if (!vREF_mV) { + if (!ts->vref_mv) { dev_warn(&spi->dev, "external vREF for ADS%d not specified\n", ts->model); @@ -875,6 +872,7 @@ static int __devinit ads7846_probe(struct spi_device *spi) ts->spi = spi; ts->input = input_dev; + ts->vref_mv = pdata->vref_mv; hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); ts->timer.function = ads7846_timer; diff --git a/drivers/input/touchscreen/corgi_ts.c b/drivers/input/touchscreen/corgi_ts.c index 99d92f5..765e964 100644 --- a/drivers/input/touchscreen/corgi_ts.c +++ b/drivers/input/touchscreen/corgi_ts.c @@ -361,6 +361,7 @@ static struct platform_driver corgits_driver = { .resume = corgits_resume, .driver = { .name = "corgi-ts", + .owner = THIS_MODULE, }, }; @@ -380,3 +381,4 @@ module_exit(corgits_exit); MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); MODULE_DESCRIPTION("Corgi TouchScreen Driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:corgi-ts"); diff --git a/drivers/input/touchscreen/jornada720_ts.c b/drivers/input/touchscreen/jornada720_ts.c index 42a1c9a..7422421 100644 --- a/drivers/input/touchscreen/jornada720_ts.c +++ b/drivers/input/touchscreen/jornada720_ts.c @@ -160,11 +160,15 @@ static int __devexit jornada720_ts_remove(struct platform_device *pdev) return 0; } +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:jornada_ts"); + static struct platform_driver jornada720_ts_driver = { .probe = jornada720_ts_probe, .remove = __devexit_p(jornada720_ts_remove), .driver = { .name = "jornada_ts", + .owner = THIS_MODULE, }, }; diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c new file mode 100644 index 0000000..a79f029 --- /dev/null +++ b/drivers/input/touchscreen/mainstone-wm97xx.c @@ -0,0 +1,302 @@ +/* + * mainstone-wm97xx.c -- Mainstone Continuous Touch screen driver for + * Wolfson WM97xx AC97 Codecs. + * + * Copyright 2004, 2007 Wolfson Microelectronics PLC. + * Author: Liam Girdwood + * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Parts Copyright : Ian Molton <spyro@f2s.com> + * Andrew Zabolotny <zap@homelink.ru> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Notes: + * This is a wm97xx extended touch driver to capture touch + * data in a continuous manner on the Intel XScale archictecture + * + * Features: + * - codecs supported:- WM9705, WM9712, WM9713 + * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/wm97xx.h> +#include <linux/io.h> +#include <asm/arch/pxa-regs.h> + +#define VERSION "0.13" + +struct continuous { + u16 id; /* codec id */ + u8 code; /* continuous code */ + u8 reads; /* number of coord reads per read cycle */ + u32 speed; /* number of coords per second */ +}; + +#define WM_READS(sp) ((sp / HZ) + 1) + +static const struct continuous cinfo[] = { + {WM9705_ID2, 0, WM_READS(94), 94}, + {WM9705_ID2, 1, WM_READS(188), 188}, + {WM9705_ID2, 2, WM_READS(375), 375}, + {WM9705_ID2, 3, WM_READS(750), 750}, + {WM9712_ID2, 0, WM_READS(94), 94}, + {WM9712_ID2, 1, WM_READS(188), 188}, + {WM9712_ID2, 2, WM_READS(375), 375}, + {WM9712_ID2, 3, WM_READS(750), 750}, + {WM9713_ID2, 0, WM_READS(94), 94}, + {WM9713_ID2, 1, WM_READS(120), 120}, + {WM9713_ID2, 2, WM_READS(154), 154}, + {WM9713_ID2, 3, WM_READS(188), 188}, +}; + +/* continuous speed index */ +static int sp_idx; +static u16 last, tries; + +/* + * Pen sampling frequency (Hz) in continuous mode. + */ +static int cont_rate = 200; +module_param(cont_rate, int, 0); +MODULE_PARM_DESC(cont_rate, "Sampling rate in continuous mode (Hz)"); + +/* + * Pen down detection. + * + * This driver can either poll or use an interrupt to indicate a pen down + * event. If the irq request fails then it will fall back to polling mode. + */ +static int pen_int; +module_param(pen_int, int, 0); +MODULE_PARM_DESC(pen_int, "Pen down detection (1 = interrupt, 0 = polling)"); + +/* + * Pressure readback. + * + * Set to 1 to read back pen down pressure + */ +static int pressure; +module_param(pressure, int, 0); +MODULE_PARM_DESC(pressure, "Pressure readback (1 = pressure, 0 = no pressure)"); + +/* + * AC97 touch data slot. + * + * Touch screen readback data ac97 slot + */ +static int ac97_touch_slot = 5; +module_param(ac97_touch_slot, int, 0); +MODULE_PARM_DESC(ac97_touch_slot, "Touch screen data slot AC97 number"); + + +/* flush AC97 slot 5 FIFO on pxa machines */ +#ifdef CONFIG_PXA27x +static void wm97xx_acc_pen_up(struct wm97xx *wm) +{ + schedule_timeout_uninterruptible(1); + + while (MISR & (1 << 2)) + MODR; +} +#else +static void wm97xx_acc_pen_up(struct wm97xx *wm) +{ + int count = 16; + schedule_timeout_uninterruptible(1); + + while (count < 16) { + MODR; + count--; + } +} +#endif + +static int wm97xx_acc_pen_down(struct wm97xx *wm) +{ + u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES; + int reads = 0; + + /* When the AC97 queue has been drained we need to allow time + * to buffer up samples otherwise we end up spinning polling + * for samples. The controller can't have a suitably low + * threashold set to use the notifications it gives. + */ + schedule_timeout_uninterruptible(1); + + if (tries > 5) { + tries = 0; + return RC_PENUP; + } + + x = MODR; + if (x == last) { + tries++; + return RC_AGAIN; + } + last = x; + do { + if (reads) + x = MODR; + y = MODR; + if (pressure) + p = MODR; + + /* are samples valid */ + if ((x & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_X || + (y & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_Y || + (p & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_PRES) + goto up; + + /* coordinate is good */ + tries = 0; + input_report_abs(wm->input_dev, ABS_X, x & 0xfff); + input_report_abs(wm->input_dev, ABS_Y, y & 0xfff); + input_report_abs(wm->input_dev, ABS_PRESSURE, p & 0xfff); + input_sync(wm->input_dev); + reads++; + } while (reads < cinfo[sp_idx].reads); +up: + return RC_PENDOWN | RC_AGAIN; +} + +static int wm97xx_acc_startup(struct wm97xx *wm) +{ + int idx = 0; + + /* check we have a codec */ + if (wm->ac97 == NULL) + return -ENODEV; + + /* Go you big red fire engine */ + for (idx = 0; idx < ARRAY_SIZE(cinfo); idx++) { + if (wm->id != cinfo[idx].id) + continue; + sp_idx = idx; + if (cont_rate <= cinfo[idx].speed) + break; + } + wm->acc_rate = cinfo[sp_idx].code; + wm->acc_slot = ac97_touch_slot; + dev_info(wm->dev, + "mainstone accelerated touchscreen driver, %d samples/sec\n", + cinfo[sp_idx].speed); + + /* codec specific irq config */ + if (pen_int) { + switch (wm->id) { + case WM9705_ID2: + wm->pen_irq = IRQ_GPIO(4); + set_irq_type(IRQ_GPIO(4), IRQT_BOTHEDGE); + break; + case WM9712_ID2: + case WM9713_ID2: + /* enable pen down interrupt */ + /* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */ + wm->pen_irq = MAINSTONE_AC97_IRQ; + wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN, + WM97XX_GPIO_POL_HIGH, + WM97XX_GPIO_STICKY, + WM97XX_GPIO_WAKE); + wm97xx_config_gpio(wm, WM97XX_GPIO_2, WM97XX_GPIO_OUT, + WM97XX_GPIO_POL_HIGH, + WM97XX_GPIO_NOTSTICKY, + WM97XX_GPIO_NOWAKE); + break; + default: + dev_err(wm->dev, + "pen down irq not supported on this device\n"); + pen_int = 0; + break; + } + } + + return 0; +} + +static void wm97xx_acc_shutdown(struct wm97xx *wm) +{ + /* codec specific deconfig */ + if (pen_int) { + switch (wm->id & 0xffff) { + case WM9705_ID2: + wm->pen_irq = 0; + break; + case WM9712_ID2: + case WM9713_ID2: + /* disable interrupt */ + wm->pen_irq = 0; + break; + } + } +} + +static void wm97xx_irq_enable(struct wm97xx *wm, int enable) +{ + if (enable) + enable_irq(wm->pen_irq); + else + disable_irq(wm->pen_irq); +} + +static struct wm97xx_mach_ops mainstone_mach_ops = { + .acc_enabled = 1, + .acc_pen_up = wm97xx_acc_pen_up, + .acc_pen_down = wm97xx_acc_pen_down, + .acc_startup = wm97xx_acc_startup, + .acc_shutdown = wm97xx_acc_shutdown, + .irq_enable = wm97xx_irq_enable, + .irq_gpio = WM97XX_GPIO_2, +}; + +static int mainstone_wm97xx_probe(struct platform_device *pdev) +{ + struct wm97xx *wm = platform_get_drvdata(pdev); + + return wm97xx_register_mach_ops(wm, &mainstone_mach_ops); +} + +static int mainstone_wm97xx_remove(struct platform_device *pdev) +{ + struct wm97xx *wm = platform_get_drvdata(pdev); + + wm97xx_unregister_mach_ops(wm); + return 0; +} + +static struct platform_driver mainstone_wm97xx_driver = { + .probe = mainstone_wm97xx_probe, + .remove = mainstone_wm97xx_remove, + .driver = { + .name = "wm97xx-touch", + }, +}; + +static int __init mainstone_wm97xx_init(void) +{ + return platform_driver_register(&mainstone_wm97xx_driver); +} + +static void __exit mainstone_wm97xx_exit(void) +{ + platform_driver_unregister(&mainstone_wm97xx_driver); +} + +module_init(mainstone_wm97xx_init); +module_exit(mainstone_wm97xx_exit); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); +MODULE_DESCRIPTION("wm97xx continuous touch driver for mainstone"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c index 607f993..bce018e 100644 --- a/drivers/input/touchscreen/ucb1400_ts.c +++ b/drivers/input/touchscreen/ucb1400_ts.c @@ -427,10 +427,6 @@ static int ucb1400_detect_irq(struct ucb1400 *ucb) unsigned long mask, timeout; mask = probe_irq_on(); - if (!mask) { - probe_irq_off(mask); - return -EBUSY; - } /* Enable the ADC interrupt. */ ucb1400_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC); diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 63f9664..3a0a8ca 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -396,9 +396,12 @@ static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt) static int dmc_tsc10_init(struct usbtouch_usb *usbtouch) { struct usb_device *dev = usbtouch->udev; - int ret; - unsigned char buf[2]; + int ret = -ENOMEM; + unsigned char *buf; + buf = kmalloc(2, GFP_KERNEL); + if (!buf) + goto err_nobuf; /* reset */ buf[0] = buf[1] = 0xFF; ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), @@ -406,9 +409,11 @@ static int dmc_tsc10_init(struct usbtouch_usb *usbtouch) USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT); if (ret < 0) - return ret; - if (buf[0] != 0x06 || buf[1] != 0x00) - return -ENODEV; + goto err_out; + if (buf[0] != 0x06 || buf[1] != 0x00) { + ret = -ENODEV; + goto err_out; + } /* set coordinate output rate */ buf[0] = buf[1] = 0xFF; @@ -417,20 +422,22 @@ static int dmc_tsc10_init(struct usbtouch_usb *usbtouch) USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT); if (ret < 0) - return ret; + goto err_out; if ((buf[0] != 0x06 || buf[1] != 0x00) && - (buf[0] != 0x15 || buf[1] != 0x01)) - return -ENODEV; + (buf[0] != 0x15 || buf[1] != 0x01)) { + ret = -ENODEV; + goto err_out; + } /* start sending data */ ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), TSC10_CMD_DATA1, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); - if (ret < 0) - return ret; - - return 0; +err_out: + kfree(buf); +err_nobuf: + return ret; } diff --git a/drivers/input/touchscreen/wm9705.c b/drivers/input/touchscreen/wm9705.c new file mode 100644 index 0000000..978e1a1 --- /dev/null +++ b/drivers/input/touchscreen/wm9705.c @@ -0,0 +1,353 @@ +/* + * wm9705.c -- Codec driver for Wolfson WM9705 AC97 Codec. + * + * Copyright 2003, 2004, 2005, 2006, 2007 Wolfson Microelectronics PLC. + * Author: Liam Girdwood + * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Parts Copyright : Ian Molton <spyro@f2s.com> + * Andrew Zabolotny <zap@homelink.ru> + * Russell King <rmk@arm.linux.org.uk> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/wm97xx.h> + +#define TS_NAME "wm97xx" +#define WM9705_VERSION "1.00" +#define DEFAULT_PRESSURE 0xb0c0 + +/* + * Module parameters + */ + +/* + * Set current used for pressure measurement. + * + * Set pil = 2 to use 400uA + * pil = 1 to use 200uA and + * pil = 0 to disable pressure measurement. + * + * This is used to increase the range of values returned by the adc + * when measureing touchpanel pressure. + */ +static int pil; +module_param(pil, int, 0); +MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); + +/* + * Set threshold for pressure measurement. + * + * Pen down pressure below threshold is ignored. + */ +static int pressure = DEFAULT_PRESSURE & 0xfff; +module_param(pressure, int, 0); +MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); + +/* + * Set adc sample delay. + * + * For accurate touchpanel measurements, some settling time may be + * required between the switch matrix applying a voltage across the + * touchpanel plate and the ADC sampling the signal. + * + * This delay can be set by setting delay = n, where n is the array + * position of the delay in the array delay_table below. + * Long delays > 1ms are supported for completeness, but are not + * recommended. + */ +static int delay = 4; +module_param(delay, int, 0); +MODULE_PARM_DESC(delay, "Set adc sample delay."); + +/* + * Pen detect comparator threshold. + * + * 0 to Vmid in 15 steps, 0 = use zero power comparator with Vmid threshold + * i.e. 1 = Vmid/15 threshold + * 15 = Vmid/1 threshold + * + * Adjust this value if you are having problems with pen detect not + * detecting any down events. + */ +static int pdd = 8; +module_param(pdd, int, 0); +MODULE_PARM_DESC(pdd, "Set pen detect comparator threshold"); + +/* + * Set adc mask function. + * + * Sources of glitch noise, such as signals driving an LCD display, may feed + * through to the touch screen plates and affect measurement accuracy. In + * order to minimise this, a signal may be applied to the MASK pin to delay or + * synchronise the sampling. + * + * 0 = No delay or sync + * 1 = High on pin stops conversions + * 2 = Edge triggered, edge on pin delays conversion by delay param (above) + * 3 = Edge triggered, edge on pin starts conversion after delay param + */ +static int mask; +module_param(mask, int, 0); +MODULE_PARM_DESC(mask, "Set adc mask function."); + +/* + * ADC sample delay times in uS + */ +static const int delay_table[] = { + 21, /* 1 AC97 Link frames */ + 42, /* 2 */ + 84, /* 4 */ + 167, /* 8 */ + 333, /* 16 */ + 667, /* 32 */ + 1000, /* 48 */ + 1333, /* 64 */ + 2000, /* 96 */ + 2667, /* 128 */ + 3333, /* 160 */ + 4000, /* 192 */ + 4667, /* 224 */ + 5333, /* 256 */ + 6000, /* 288 */ + 0 /* No delay, switch matrix always on */ +}; + +/* + * Delay after issuing a POLL command. + * + * The delay is 3 AC97 link frames + the touchpanel settling delay + */ +static inline void poll_delay(int d) +{ + udelay(3 * AC97_LINK_FRAME + delay_table[d]); +} + +/* + * set up the physical settings of the WM9705 + */ +static void wm9705_phy_init(struct wm97xx *wm) +{ + u16 dig1 = 0, dig2 = WM97XX_RPR; + + /* + * mute VIDEO and AUX as they share X and Y touchscreen + * inputs on the WM9705 + */ + wm97xx_reg_write(wm, AC97_AUX, 0x8000); + wm97xx_reg_write(wm, AC97_VIDEO, 0x8000); + + /* touchpanel pressure current*/ + if (pil == 2) { + dig2 |= WM9705_PIL; + dev_dbg(wm->dev, + "setting pressure measurement current to 400uA."); + } else if (pil) + dev_dbg(wm->dev, + "setting pressure measurement current to 200uA."); + if (!pil) + pressure = 0; + + /* polling mode sample settling delay */ + if (delay != 4) { + if (delay < 0 || delay > 15) { + dev_dbg(wm->dev, "supplied delay out of range."); + delay = 4; + } + } + dig1 &= 0xff0f; + dig1 |= WM97XX_DELAY(delay); + dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.", + delay_table[delay]); + + /* WM9705 pdd */ + dig2 |= (pdd & 0x000f); + dev_dbg(wm->dev, "setting pdd to Vmid/%d", 1 - (pdd & 0x000f)); + + /* mask */ + dig2 |= ((mask & 0x3) << 4); + + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); +} + +static void wm9705_dig_enable(struct wm97xx *wm, int enable) +{ + if (enable) { + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, + wm->dig[2] | WM97XX_PRP_DET_DIG); + wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ + } else + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, + wm->dig[2] & ~WM97XX_PRP_DET_DIG); +} + +static void wm9705_aux_prepare(struct wm97xx *wm) +{ + memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, 0); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, WM97XX_PRP_DET_DIG); +} + +static void wm9705_dig_restore(struct wm97xx *wm) +{ + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]); +} + +static inline int is_pden(struct wm97xx *wm) +{ + return wm->dig[2] & WM9705_PDEN; +} + +/* + * Read a sample from the WM9705 adc in polling mode. + */ +static int wm9705_poll_sample(struct wm97xx *wm, int adcsel, int *sample) +{ + int timeout = 5 * delay; + + if (!wm->pen_probably_down) { + u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (!(data & WM97XX_PEN_DOWN)) + return RC_PENUP; + wm->pen_probably_down = 1; + } + + /* set up digitiser */ + if (adcsel & 0x8000) + adcsel = ((adcsel & 0x7fff) + 3) << 12; + + if (wm->mach_ops && wm->mach_ops->pre_sample) + wm->mach_ops->pre_sample(adcsel); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, + adcsel | WM97XX_POLL | WM97XX_DELAY(delay)); + + /* wait 3 AC97 time slots + delay for conversion */ + poll_delay(delay); + + /* wait for POLL to go low */ + while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) + && timeout) { + udelay(AC97_LINK_FRAME); + timeout--; + } + + if (timeout == 0) { + /* If PDEN is set, we can get a timeout when pen goes up */ + if (is_pden(wm)) + wm->pen_probably_down = 0; + else + dev_dbg(wm->dev, "adc sample timeout"); + return RC_PENUP; + } + + *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (wm->mach_ops && wm->mach_ops->post_sample) + wm->mach_ops->post_sample(adcsel); + + /* check we have correct sample */ + if ((*sample & WM97XX_ADCSEL_MASK) != adcsel) { + dev_dbg(wm->dev, "adc wrong sample, read %x got %x", adcsel, + *sample & WM97XX_ADCSEL_MASK); + return RC_PENUP; + } + + if (!(*sample & WM97XX_PEN_DOWN)) { + wm->pen_probably_down = 0; + return RC_PENUP; + } + + return RC_VALID; +} + +/* + * Sample the WM9705 touchscreen in polling mode + */ +static int wm9705_poll_touch(struct wm97xx *wm, struct wm97xx_data *data) +{ + int rc; + + rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_X, &data->x); + if (rc != RC_VALID) + return rc; + rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_Y, &data->y); + if (rc != RC_VALID) + return rc; + if (pil) { + rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_PRES, &data->p); + if (rc != RC_VALID) + return rc; + } else + data->p = DEFAULT_PRESSURE; + + return RC_VALID; +} + +/* + * Enable WM9705 continuous mode, i.e. touch data is streamed across + * an AC97 slot + */ +static int wm9705_acc_enable(struct wm97xx *wm, int enable) +{ + u16 dig1, dig2; + int ret = 0; + + dig1 = wm->dig[1]; + dig2 = wm->dig[2]; + + if (enable) { + /* continous mode */ + if (wm->mach_ops->acc_startup && + (ret = wm->mach_ops->acc_startup(wm)) < 0) + return ret; + dig1 &= ~(WM97XX_CM_RATE_MASK | WM97XX_ADCSEL_MASK | + WM97XX_DELAY_MASK | WM97XX_SLT_MASK); + dig1 |= WM97XX_CTC | WM97XX_COO | WM97XX_SLEN | + WM97XX_DELAY(delay) | + WM97XX_SLT(wm->acc_slot) | + WM97XX_RATE(wm->acc_rate); + if (pil) + dig1 |= WM97XX_ADCSEL_PRES; + dig2 |= WM9705_PDEN; + } else { + dig1 &= ~(WM97XX_CTC | WM97XX_COO | WM97XX_SLEN); + dig2 &= ~WM9705_PDEN; + if (wm->mach_ops->acc_shutdown) + wm->mach_ops->acc_shutdown(wm); + } + + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); + + return ret; +} + +struct wm97xx_codec_drv wm9705_codec = { + .id = WM9705_ID2, + .name = "wm9705", + .poll_sample = wm9705_poll_sample, + .poll_touch = wm9705_poll_touch, + .acc_enable = wm9705_acc_enable, + .phy_init = wm9705_phy_init, + .dig_enable = wm9705_dig_enable, + .dig_restore = wm9705_dig_restore, + .aux_prepare = wm9705_aux_prepare, +}; +EXPORT_SYMBOL_GPL(wm9705_codec); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM9705 Touch Screen Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c new file mode 100644 index 0000000..0b6e4cf --- /dev/null +++ b/drivers/input/touchscreen/wm9712.c @@ -0,0 +1,462 @@ +/* + * wm9712.c -- Codec driver for Wolfson WM9712 AC97 Codecs. + * + * Copyright 2003, 2004, 2005, 2006, 2007 Wolfson Microelectronics PLC. + * Author: Liam Girdwood + * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Parts Copyright : Ian Molton <spyro@f2s.com> + * Andrew Zabolotny <zap@homelink.ru> + * Russell King <rmk@arm.linux.org.uk> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/wm97xx.h> + +#define TS_NAME "wm97xx" +#define WM9712_VERSION "1.00" +#define DEFAULT_PRESSURE 0xb0c0 + +/* + * Module parameters + */ + +/* + * Set internal pull up for pen detect. + * + * Pull up is in the range 1.02k (least sensitive) to 64k (most sensitive) + * i.e. pull up resistance = 64k Ohms / rpu. + * + * Adjust this value if you are having problems with pen detect not + * detecting any down event. + */ +static int rpu = 8; +module_param(rpu, int, 0); +MODULE_PARM_DESC(rpu, "Set internal pull up resitor for pen detect."); + +/* + * Set current used for pressure measurement. + * + * Set pil = 2 to use 400uA + * pil = 1 to use 200uA and + * pil = 0 to disable pressure measurement. + * + * This is used to increase the range of values returned by the adc + * when measureing touchpanel pressure. + */ +static int pil; +module_param(pil, int, 0); +MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); + +/* + * Set threshold for pressure measurement. + * + * Pen down pressure below threshold is ignored. + */ +static int pressure = DEFAULT_PRESSURE & 0xfff; +module_param(pressure, int, 0); +MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); + +/* + * Set adc sample delay. + * + * For accurate touchpanel measurements, some settling time may be + * required between the switch matrix applying a voltage across the + * touchpanel plate and the ADC sampling the signal. + * + * This delay can be set by setting delay = n, where n is the array + * position of the delay in the array delay_table below. + * Long delays > 1ms are supported for completeness, but are not + * recommended. + */ +static int delay = 3; +module_param(delay, int, 0); +MODULE_PARM_DESC(delay, "Set adc sample delay."); + +/* + * Set five_wire = 1 to use a 5 wire touchscreen. + * + * NOTE: Five wire mode does not allow for readback of pressure. + */ +static int five_wire; +module_param(five_wire, int, 0); +MODULE_PARM_DESC(five_wire, "Set to '1' to use 5-wire touchscreen."); + +/* + * Set adc mask function. + * + * Sources of glitch noise, such as signals driving an LCD display, may feed + * through to the touch screen plates and affect measurement accuracy. In + * order to minimise this, a signal may be applied to the MASK pin to delay or + * synchronise the sampling. + * + * 0 = No delay or sync + * 1 = High on pin stops conversions + * 2 = Edge triggered, edge on pin delays conversion by delay param (above) + * 3 = Edge triggered, edge on pin starts conversion after delay param + */ +static int mask; +module_param(mask, int, 0); +MODULE_PARM_DESC(mask, "Set adc mask function."); + +/* + * Coordinate Polling Enable. + * + * Set to 1 to enable coordinate polling. e.g. x,y[,p] is sampled together + * for every poll. + */ +static int coord; +module_param(coord, int, 0); +MODULE_PARM_DESC(coord, "Polling coordinate mode"); + +/* + * ADC sample delay times in uS + */ +static const int delay_table[] = { + 21, /* 1 AC97 Link frames */ + 42, /* 2 */ + 84, /* 4 */ + 167, /* 8 */ + 333, /* 16 */ + 667, /* 32 */ + 1000, /* 48 */ + 1333, /* 64 */ + 2000, /* 96 */ + 2667, /* 128 */ + 3333, /* 160 */ + 4000, /* 192 */ + 4667, /* 224 */ + 5333, /* 256 */ + 6000, /* 288 */ + 0 /* No delay, switch matrix always on */ +}; + +/* + * Delay after issuing a POLL command. + * + * The delay is 3 AC97 link frames + the touchpanel settling delay + */ +static inline void poll_delay(int d) +{ + udelay(3 * AC97_LINK_FRAME + delay_table[d]); +} + +/* + * set up the physical settings of the WM9712 + */ +static void wm9712_phy_init(struct wm97xx *wm) +{ + u16 dig1 = 0; + u16 dig2 = WM97XX_RPR | WM9712_RPU(1); + + /* WM9712 rpu */ + if (rpu) { + dig2 &= 0xffc0; + dig2 |= WM9712_RPU(rpu); + dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms", + 64000 / rpu); + } + + /* touchpanel pressure current*/ + if (pil == 2) { + dig2 |= WM9712_PIL; + dev_dbg(wm->dev, + "setting pressure measurement current to 400uA."); + } else if (pil) + dev_dbg(wm->dev, + "setting pressure measurement current to 200uA."); + if (!pil) + pressure = 0; + + /* WM9712 five wire */ + if (five_wire) { + dig2 |= WM9712_45W; + dev_dbg(wm->dev, "setting 5-wire touchscreen mode."); + } + + /* polling mode sample settling delay */ + if (delay < 0 || delay > 15) { + dev_dbg(wm->dev, "supplied delay out of range."); + delay = 4; + } + dig1 &= 0xff0f; + dig1 |= WM97XX_DELAY(delay); + dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.", + delay_table[delay]); + + /* mask */ + dig2 |= ((mask & 0x3) << 6); + if (mask) { + u16 reg; + /* Set GPIO4 as Mask Pin*/ + reg = wm97xx_reg_read(wm, AC97_MISC_AFE); + wm97xx_reg_write(wm, AC97_MISC_AFE, reg | WM97XX_GPIO_4); + reg = wm97xx_reg_read(wm, AC97_GPIO_CFG); + wm97xx_reg_write(wm, AC97_GPIO_CFG, reg | WM97XX_GPIO_4); + } + + /* wait - coord mode */ + if (coord) + dig2 |= WM9712_WAIT; + + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); +} + +static void wm9712_dig_enable(struct wm97xx *wm, int enable) +{ + u16 dig2 = wm->dig[2]; + + if (enable) { + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, + dig2 | WM97XX_PRP_DET_DIG); + wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ + } else + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, + dig2 & ~WM97XX_PRP_DET_DIG); +} + +static void wm9712_aux_prepare(struct wm97xx *wm) +{ + memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, 0); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, WM97XX_PRP_DET_DIG); +} + +static void wm9712_dig_restore(struct wm97xx *wm) +{ + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]); +} + +static inline int is_pden(struct wm97xx *wm) +{ + return wm->dig[2] & WM9712_PDEN; +} + +/* + * Read a sample from the WM9712 adc in polling mode. + */ +static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample) +{ + int timeout = 5 * delay; + + if (!wm->pen_probably_down) { + u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (!(data & WM97XX_PEN_DOWN)) + return RC_PENUP; + wm->pen_probably_down = 1; + } + + /* set up digitiser */ + if (adcsel & 0x8000) + adcsel = ((adcsel & 0x7fff) + 3) << 12; + + if (wm->mach_ops && wm->mach_ops->pre_sample) + wm->mach_ops->pre_sample(adcsel); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, + adcsel | WM97XX_POLL | WM97XX_DELAY(delay)); + + /* wait 3 AC97 time slots + delay for conversion */ + poll_delay(delay); + + /* wait for POLL to go low */ + while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) + && timeout) { + udelay(AC97_LINK_FRAME); + timeout--; + } + + if (timeout <= 0) { + /* If PDEN is set, we can get a timeout when pen goes up */ + if (is_pden(wm)) + wm->pen_probably_down = 0; + else + dev_dbg(wm->dev, "adc sample timeout"); + return RC_PENUP; + } + + *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (wm->mach_ops && wm->mach_ops->post_sample) + wm->mach_ops->post_sample(adcsel); + + /* check we have correct sample */ + if ((*sample & WM97XX_ADCSEL_MASK) != adcsel) { + dev_dbg(wm->dev, "adc wrong sample, read %x got %x", adcsel, + *sample & WM97XX_ADCSEL_MASK); + return RC_PENUP; + } + + if (!(*sample & WM97XX_PEN_DOWN)) { + wm->pen_probably_down = 0; + return RC_PENUP; + } + + return RC_VALID; +} + +/* + * Read a coord from the WM9712 adc in polling mode. + */ +static int wm9712_poll_coord(struct wm97xx *wm, struct wm97xx_data *data) +{ + int timeout = 5 * delay; + + if (!wm->pen_probably_down) { + u16 data_rd = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (!(data_rd & WM97XX_PEN_DOWN)) + return RC_PENUP; + wm->pen_probably_down = 1; + } + + /* set up digitiser */ + if (wm->mach_ops && wm->mach_ops->pre_sample) + wm->mach_ops->pre_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); + + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, + WM97XX_COO | WM97XX_POLL | WM97XX_DELAY(delay)); + + /* wait 3 AC97 time slots + delay for conversion and read x */ + poll_delay(delay); + data->x = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + /* wait for POLL to go low */ + while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) + && timeout) { + udelay(AC97_LINK_FRAME); + timeout--; + } + + if (timeout <= 0) { + /* If PDEN is set, we can get a timeout when pen goes up */ + if (is_pden(wm)) + wm->pen_probably_down = 0; + else + dev_dbg(wm->dev, "adc sample timeout"); + return RC_PENUP; + } + + /* read back y data */ + data->y = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (pil) + data->p = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + else + data->p = DEFAULT_PRESSURE; + + if (wm->mach_ops && wm->mach_ops->post_sample) + wm->mach_ops->post_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); + + /* check we have correct sample */ + if (!(data->x & WM97XX_ADCSEL_X) || !(data->y & WM97XX_ADCSEL_Y)) + goto err; + if (pil && !(data->p & WM97XX_ADCSEL_PRES)) + goto err; + + if (!(data->x & WM97XX_PEN_DOWN) || !(data->y & WM97XX_PEN_DOWN)) { + wm->pen_probably_down = 0; + return RC_PENUP; + } + return RC_VALID; +err: + return 0; +} + +/* + * Sample the WM9712 touchscreen in polling mode + */ +static int wm9712_poll_touch(struct wm97xx *wm, struct wm97xx_data *data) +{ + int rc; + + if (coord) { + rc = wm9712_poll_coord(wm, data); + if (rc != RC_VALID) + return rc; + } else { + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_X, &data->x); + if (rc != RC_VALID) + return rc; + + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_Y, &data->y); + if (rc != RC_VALID) + return rc; + + if (pil && !five_wire) { + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_PRES, + &data->p); + if (rc != RC_VALID) + return rc; + } else + data->p = DEFAULT_PRESSURE; + } + return RC_VALID; +} + +/* + * Enable WM9712 continuous mode, i.e. touch data is streamed across + * an AC97 slot + */ +static int wm9712_acc_enable(struct wm97xx *wm, int enable) +{ + u16 dig1, dig2; + int ret = 0; + + dig1 = wm->dig[1]; + dig2 = wm->dig[2]; + + if (enable) { + /* continous mode */ + if (wm->mach_ops->acc_startup) { + ret = wm->mach_ops->acc_startup(wm); + if (ret < 0) + return ret; + } + dig1 &= ~(WM97XX_CM_RATE_MASK | WM97XX_ADCSEL_MASK | + WM97XX_DELAY_MASK | WM97XX_SLT_MASK); + dig1 |= WM97XX_CTC | WM97XX_COO | WM97XX_SLEN | + WM97XX_DELAY(delay) | + WM97XX_SLT(wm->acc_slot) | + WM97XX_RATE(wm->acc_rate); + if (pil) + dig1 |= WM97XX_ADCSEL_PRES; + dig2 |= WM9712_PDEN; + } else { + dig1 &= ~(WM97XX_CTC | WM97XX_COO | WM97XX_SLEN); + dig2 &= ~WM9712_PDEN; + if (wm->mach_ops->acc_shutdown) + wm->mach_ops->acc_shutdown(wm); + } + + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); + + return 0; +} + +struct wm97xx_codec_drv wm9712_codec = { + .id = WM9712_ID2, + .name = "wm9712", + .poll_sample = wm9712_poll_sample, + .poll_touch = wm9712_poll_touch, + .acc_enable = wm9712_acc_enable, + .phy_init = wm9712_phy_init, + .dig_enable = wm9712_dig_enable, + .dig_restore = wm9712_dig_restore, + .aux_prepare = wm9712_aux_prepare, +}; +EXPORT_SYMBOL_GPL(wm9712_codec); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM9712 Touch Screen Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/wm9713.c b/drivers/input/touchscreen/wm9713.c new file mode 100644 index 0000000..01278bd --- /dev/null +++ b/drivers/input/touchscreen/wm9713.c @@ -0,0 +1,460 @@ +/* + * wm9713.c -- Codec touch driver for Wolfson WM9713 AC97 Codec. + * + * Copyright 2003, 2004, 2005, 2006, 2007, 2008 Wolfson Microelectronics PLC. + * Author: Liam Girdwood + * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Parts Copyright : Ian Molton <spyro@f2s.com> + * Andrew Zabolotny <zap@homelink.ru> + * Russell King <rmk@arm.linux.org.uk> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/wm97xx.h> + +#define TS_NAME "wm97xx" +#define WM9713_VERSION "1.00" +#define DEFAULT_PRESSURE 0xb0c0 + +/* + * Module parameters + */ + +/* + * Set internal pull up for pen detect. + * + * Pull up is in the range 1.02k (least sensitive) to 64k (most sensitive) + * i.e. pull up resistance = 64k Ohms / rpu. + * + * Adjust this value if you are having problems with pen detect not + * detecting any down event. + */ +static int rpu = 8; +module_param(rpu, int, 0); +MODULE_PARM_DESC(rpu, "Set internal pull up resitor for pen detect."); + +/* + * Set current used for pressure measurement. + * + * Set pil = 2 to use 400uA + * pil = 1 to use 200uA and + * pil = 0 to disable pressure measurement. + * + * This is used to increase the range of values returned by the adc + * when measureing touchpanel pressure. + */ +static int pil; +module_param(pil, int, 0); +MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); + +/* + * Set threshold for pressure measurement. + * + * Pen down pressure below threshold is ignored. + */ +static int pressure = DEFAULT_PRESSURE & 0xfff; +module_param(pressure, int, 0); +MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); + +/* + * Set adc sample delay. + * + * For accurate touchpanel measurements, some settling time may be + * required between the switch matrix applying a voltage across the + * touchpanel plate and the ADC sampling the signal. + * + * This delay can be set by setting delay = n, where n is the array + * position of the delay in the array delay_table below. + * Long delays > 1ms are supported for completeness, but are not + * recommended. + */ +static int delay = 4; +module_param(delay, int, 0); +MODULE_PARM_DESC(delay, "Set adc sample delay."); + +/* + * Set adc mask function. + * + * Sources of glitch noise, such as signals driving an LCD display, may feed + * through to the touch screen plates and affect measurement accuracy. In + * order to minimise this, a signal may be applied to the MASK pin to delay or + * synchronise the sampling. + * + * 0 = No delay or sync + * 1 = High on pin stops conversions + * 2 = Edge triggered, edge on pin delays conversion by delay param (above) + * 3 = Edge triggered, edge on pin starts conversion after delay param + */ +static int mask; +module_param(mask, int, 0); +MODULE_PARM_DESC(mask, "Set adc mask function."); + +/* + * Coordinate Polling Enable. + * + * Set to 1 to enable coordinate polling. e.g. x,y[,p] is sampled together + * for every poll. + */ +static int coord; +module_param(coord, int, 0); +MODULE_PARM_DESC(coord, "Polling coordinate mode"); + +/* + * ADC sample delay times in uS + */ +static const int delay_table[] = { + 21, /* 1 AC97 Link frames */ + 42, /* 2 */ + 84, /* 4 */ + 167, /* 8 */ + 333, /* 16 */ + 667, /* 32 */ + 1000, /* 48 */ + 1333, /* 64 */ + 2000, /* 96 */ + 2667, /* 128 */ + 3333, /* 160 */ + 4000, /* 192 */ + 4667, /* 224 */ + 5333, /* 256 */ + 6000, /* 288 */ + 0 /* No delay, switch matrix always on */ +}; + +/* + * Delay after issuing a POLL command. + * + * The delay is 3 AC97 link frames + the touchpanel settling delay + */ +static inline void poll_delay(int d) +{ + udelay(3 * AC97_LINK_FRAME + delay_table[d]); +} + +/* + * set up the physical settings of the WM9713 + */ +static void wm9713_phy_init(struct wm97xx *wm) +{ + u16 dig1 = 0, dig2, dig3; + + /* default values */ + dig2 = WM97XX_DELAY(4) | WM97XX_SLT(5); + dig3 = WM9712_RPU(1); + + /* rpu */ + if (rpu) { + dig3 &= 0xffc0; + dig3 |= WM9712_RPU(rpu); + dev_info(wm->dev, "setting pen detect pull-up to %d Ohms\n", + 64000 / rpu); + } + + /* touchpanel pressure */ + if (pil == 2) { + dig3 |= WM9712_PIL; + dev_info(wm->dev, + "setting pressure measurement current to 400uA."); + } else if (pil) + dev_info(wm->dev, + "setting pressure measurement current to 200uA."); + if (!pil) + pressure = 0; + + /* sample settling delay */ + if (delay < 0 || delay > 15) { + dev_info(wm->dev, "supplied delay out of range."); + delay = 4; + dev_info(wm->dev, "setting adc sample delay to %d u Secs.", + delay_table[delay]); + } + dig2 &= 0xff0f; + dig2 |= WM97XX_DELAY(delay); + + /* mask */ + dig3 |= ((mask & 0x3) << 4); + if (coord) + dig3 |= WM9713_WAIT; + + wm->misc = wm97xx_reg_read(wm, 0x5a); + + wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1); + wm97xx_reg_write(wm, AC97_WM9713_DIG2, dig2); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, dig3); + wm97xx_reg_write(wm, AC97_GPIO_STICKY, 0x0); +} + +static void wm9713_dig_enable(struct wm97xx *wm, int enable) +{ + u16 val; + + if (enable) { + val = wm97xx_reg_read(wm, AC97_EXTENDED_MID); + wm97xx_reg_write(wm, AC97_EXTENDED_MID, val & 0x7fff); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2] | + WM97XX_PRP_DET_DIG); + wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ + } else { + wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2] & + ~WM97XX_PRP_DET_DIG); + val = wm97xx_reg_read(wm, AC97_EXTENDED_MID); + wm97xx_reg_write(wm, AC97_EXTENDED_MID, val | 0x8000); + } +} + +static void wm9713_dig_restore(struct wm97xx *wm) +{ + wm97xx_reg_write(wm, AC97_WM9713_DIG1, wm->dig_save[0]); + wm97xx_reg_write(wm, AC97_WM9713_DIG2, wm->dig_save[1]); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig_save[2]); +} + +static void wm9713_aux_prepare(struct wm97xx *wm) +{ + memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); + wm97xx_reg_write(wm, AC97_WM9713_DIG1, 0); + wm97xx_reg_write(wm, AC97_WM9713_DIG2, 0); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, WM97XX_PRP_DET_DIG); +} + +static inline int is_pden(struct wm97xx *wm) +{ + return wm->dig[2] & WM9713_PDEN; +} + +/* + * Read a sample from the WM9713 adc in polling mode. + */ +static int wm9713_poll_sample(struct wm97xx *wm, int adcsel, int *sample) +{ + u16 dig1; + int timeout = 5 * delay; + + if (!wm->pen_probably_down) { + u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (!(data & WM97XX_PEN_DOWN)) + return RC_PENUP; + wm->pen_probably_down = 1; + } + + /* set up digitiser */ + if (adcsel & 0x8000) + adcsel = 1 << ((adcsel & 0x7fff) + 3); + + dig1 = wm97xx_reg_read(wm, AC97_WM9713_DIG1); + dig1 &= ~WM9713_ADCSEL_MASK; + + if (wm->mach_ops && wm->mach_ops->pre_sample) + wm->mach_ops->pre_sample(adcsel); + wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1 | adcsel | WM9713_POLL); + + /* wait 3 AC97 time slots + delay for conversion */ + poll_delay(delay); + + /* wait for POLL to go low */ + while ((wm97xx_reg_read(wm, AC97_WM9713_DIG1) & WM9713_POLL) && + timeout) { + udelay(AC97_LINK_FRAME); + timeout--; + } + + if (timeout <= 0) { + /* If PDEN is set, we can get a timeout when pen goes up */ + if (is_pden(wm)) + wm->pen_probably_down = 0; + else + dev_dbg(wm->dev, "adc sample timeout"); + return RC_PENUP; + } + + *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (wm->mach_ops && wm->mach_ops->post_sample) + wm->mach_ops->post_sample(adcsel); + + /* check we have correct sample */ + if ((*sample & WM97XX_ADCSRC_MASK) != ffs(adcsel >> 1) << 12) { + dev_dbg(wm->dev, "adc wrong sample, read %x got %x", adcsel, + *sample & WM97XX_ADCSRC_MASK); + return RC_PENUP; + } + + if (!(*sample & WM97XX_PEN_DOWN)) { + wm->pen_probably_down = 0; + return RC_PENUP; + } + + return RC_VALID; +} + +/* + * Read a coordinate from the WM9713 adc in polling mode. + */ +static int wm9713_poll_coord(struct wm97xx *wm, struct wm97xx_data *data) +{ + u16 dig1; + int timeout = 5 * delay; + + if (!wm->pen_probably_down) { + u16 val = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (!(val & WM97XX_PEN_DOWN)) + return RC_PENUP; + wm->pen_probably_down = 1; + } + + /* set up digitiser */ + dig1 = wm97xx_reg_read(wm, AC97_WM9713_DIG1); + dig1 &= ~WM9713_ADCSEL_MASK; + if (pil) + dig1 |= WM9713_ADCSEL_PRES; + + if (wm->mach_ops && wm->mach_ops->pre_sample) + wm->mach_ops->pre_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); + wm97xx_reg_write(wm, AC97_WM9713_DIG1, + dig1 | WM9713_POLL | WM9713_COO); + + /* wait 3 AC97 time slots + delay for conversion */ + poll_delay(delay); + data->x = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + /* wait for POLL to go low */ + while ((wm97xx_reg_read(wm, AC97_WM9713_DIG1) & WM9713_POLL) + && timeout) { + udelay(AC97_LINK_FRAME); + timeout--; + } + + if (timeout <= 0) { + /* If PDEN is set, we can get a timeout when pen goes up */ + if (is_pden(wm)) + wm->pen_probably_down = 0; + else + dev_dbg(wm->dev, "adc sample timeout"); + return RC_PENUP; + } + + /* read back data */ + data->y = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + if (pil) + data->p = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); + else + data->p = DEFAULT_PRESSURE; + + if (wm->mach_ops && wm->mach_ops->post_sample) + wm->mach_ops->post_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); + + /* check we have correct sample */ + if (!(data->x & WM97XX_ADCSEL_X) || !(data->y & WM97XX_ADCSEL_Y)) + goto err; + if (pil && !(data->p & WM97XX_ADCSEL_PRES)) + goto err; + + if (!(data->x & WM97XX_PEN_DOWN) || !(data->y & WM97XX_PEN_DOWN)) { + wm->pen_probably_down = 0; + return RC_PENUP; + } + return RC_VALID; +err: + return 0; +} + +/* + * Sample the WM9713 touchscreen in polling mode + */ +static int wm9713_poll_touch(struct wm97xx *wm, struct wm97xx_data *data) +{ + int rc; + + if (coord) { + rc = wm9713_poll_coord(wm, data); + if (rc != RC_VALID) + return rc; + } else { + rc = wm9713_poll_sample(wm, WM9713_ADCSEL_X, &data->x); + if (rc != RC_VALID) + return rc; + rc = wm9713_poll_sample(wm, WM9713_ADCSEL_Y, &data->y); + if (rc != RC_VALID) + return rc; + if (pil) { + rc = wm9713_poll_sample(wm, WM9713_ADCSEL_PRES, + &data->p); + if (rc != RC_VALID) + return rc; + } else + data->p = DEFAULT_PRESSURE; + } + return RC_VALID; +} + +/* + * Enable WM9713 continuous mode, i.e. touch data is streamed across + * an AC97 slot + */ +static int wm9713_acc_enable(struct wm97xx *wm, int enable) +{ + u16 dig1, dig2, dig3; + int ret = 0; + + dig1 = wm->dig[0]; + dig2 = wm->dig[1]; + dig3 = wm->dig[2]; + + if (enable) { + /* continous mode */ + if (wm->mach_ops->acc_startup && + (ret = wm->mach_ops->acc_startup(wm)) < 0) + return ret; + + dig1 &= ~WM9713_ADCSEL_MASK; + dig1 |= WM9713_CTC | WM9713_COO | WM9713_ADCSEL_X | + WM9713_ADCSEL_Y; + if (pil) + dig1 |= WM9713_ADCSEL_PRES; + dig2 &= ~(WM97XX_DELAY_MASK | WM97XX_SLT_MASK | + WM97XX_CM_RATE_MASK); + dig2 |= WM97XX_SLEN | WM97XX_DELAY(delay) | + WM97XX_SLT(wm->acc_slot) | WM97XX_RATE(wm->acc_rate); + dig3 |= WM9713_PDEN; + } else { + dig1 &= ~(WM9713_CTC | WM9713_COO); + dig2 &= ~WM97XX_SLEN; + dig3 &= ~WM9713_PDEN; + if (wm->mach_ops->acc_shutdown) + wm->mach_ops->acc_shutdown(wm); + } + + wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1); + wm97xx_reg_write(wm, AC97_WM9713_DIG2, dig2); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, dig3); + + return ret; +} + +struct wm97xx_codec_drv wm9713_codec = { + .id = WM9713_ID2, + .name = "wm9713", + .poll_sample = wm9713_poll_sample, + .poll_touch = wm9713_poll_touch, + .acc_enable = wm9713_acc_enable, + .phy_init = wm9713_phy_init, + .dig_enable = wm9713_dig_enable, + .dig_restore = wm9713_dig_restore, + .aux_prepare = wm9713_aux_prepare, +}; +EXPORT_SYMBOL_GPL(wm9713_codec); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM9713 Touch Screen Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c new file mode 100644 index 0000000..e9c7ea4 --- /dev/null +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -0,0 +1,829 @@ +/* + * wm97xx-core.c -- Touch screen driver core for Wolfson WM9705, WM9712 + * and WM9713 AC97 Codecs. + * + * Copyright 2003, 2004, 2005, 2006, 2007, 2008 Wolfson Microelectronics PLC. + * Author: Liam Girdwood + * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Parts Copyright : Ian Molton <spyro@f2s.com> + * Andrew Zabolotny <zap@homelink.ru> + * Russell King <rmk@arm.linux.org.uk> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Notes: + * + * Features: + * - supports WM9705, WM9712, WM9713 + * - polling mode + * - continuous mode (arch-dependent) + * - adjustable rpu/dpp settings + * - adjustable pressure current + * - adjustable sample settle delay + * - 4 and 5 wire touchscreens (5 wire is WM9712 only) + * - pen down detection + * - battery monitor + * - sample AUX adcs + * - power management + * - codec GPIO + * - codec event notification + * Todo + * - Support for async sampling control for noisy LCDs. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/string.h> +#include <linux/proc_fs.h> +#include <linux/pm.h> +#include <linux/interrupt.h> +#include <linux/bitops.h> +#include <linux/workqueue.h> +#include <linux/wm97xx.h> +#include <linux/uaccess.h> +#include <linux/io.h> + +#define TS_NAME "wm97xx" +#define WM_CORE_VERSION "1.00" +#define DEFAULT_PRESSURE 0xb0c0 + + +/* + * Touchscreen absolute values + * + * These parameters are used to help the input layer discard out of + * range readings and reduce jitter etc. + * + * o min, max:- indicate the min and max values your touch screen returns + * o fuzz:- use a higher number to reduce jitter + * + * The default values correspond to Mainstone II in QVGA mode + * + * Please read + * Documentation/input/input-programming.txt for more details. + */ + +static int abs_x[3] = {350, 3900, 5}; +module_param_array(abs_x, int, NULL, 0); +MODULE_PARM_DESC(abs_x, "Touchscreen absolute X min, max, fuzz"); + +static int abs_y[3] = {320, 3750, 40}; +module_param_array(abs_y, int, NULL, 0); +MODULE_PARM_DESC(abs_y, "Touchscreen absolute Y min, max, fuzz"); + +static int abs_p[3] = {0, 150, 4}; +module_param_array(abs_p, int, NULL, 0); +MODULE_PARM_DESC(abs_p, "Touchscreen absolute Pressure min, max, fuzz"); + +/* + * wm97xx IO access, all IO locking done by AC97 layer + */ +int wm97xx_reg_read(struct wm97xx *wm, u16 reg) +{ + if (wm->ac97) + return wm->ac97->bus->ops->read(wm->ac97, reg); + else + return -1; +} +EXPORT_SYMBOL_GPL(wm97xx_reg_read); + +void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val) +{ + /* cache digitiser registers */ + if (reg >= AC97_WM9713_DIG1 && reg <= AC97_WM9713_DIG3) + wm->dig[(reg - AC97_WM9713_DIG1) >> 1] = val; + + /* cache gpio regs */ + if (reg >= AC97_GPIO_CFG && reg <= AC97_MISC_AFE) + wm->gpio[(reg - AC97_GPIO_CFG) >> 1] = val; + + /* wm9713 irq reg */ + if (reg == 0x5a) + wm->misc = val; + + if (wm->ac97) + wm->ac97->bus->ops->write(wm->ac97, reg, val); +} +EXPORT_SYMBOL_GPL(wm97xx_reg_write); + +/** + * wm97xx_read_aux_adc - Read the aux adc. + * @wm: wm97xx device. + * @adcsel: codec ADC to be read + * + * Reads the selected AUX ADC. + */ + +int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel) +{ + int power_adc = 0, auxval; + u16 power = 0; + + /* get codec */ + mutex_lock(&wm->codec_mutex); + + /* When the touchscreen is not in use, we may have to power up + * the AUX ADC before we can use sample the AUX inputs-> + */ + if (wm->id == WM9713_ID2 && + (power = wm97xx_reg_read(wm, AC97_EXTENDED_MID)) & 0x8000) { + power_adc = 1; + wm97xx_reg_write(wm, AC97_EXTENDED_MID, power & 0x7fff); + } + + /* Prepare the codec for AUX reading */ + wm->codec->aux_prepare(wm); + + /* Turn polling mode on to read AUX ADC */ + wm->pen_probably_down = 1; + wm->codec->poll_sample(wm, adcsel, &auxval); + + if (power_adc) + wm97xx_reg_write(wm, AC97_EXTENDED_MID, power | 0x8000); + + wm->codec->dig_restore(wm); + + wm->pen_probably_down = 0; + + mutex_unlock(&wm->codec_mutex); + return auxval & 0xfff; +} +EXPORT_SYMBOL_GPL(wm97xx_read_aux_adc); + +/** + * wm97xx_get_gpio - Get the status of a codec GPIO. + * @wm: wm97xx device. + * @gpio: gpio + * + * Get the status of a codec GPIO pin + */ + +enum wm97xx_gpio_status wm97xx_get_gpio(struct wm97xx *wm, u32 gpio) +{ + u16 status; + enum wm97xx_gpio_status ret; + + mutex_lock(&wm->codec_mutex); + status = wm97xx_reg_read(wm, AC97_GPIO_STATUS); + + if (status & gpio) + ret = WM97XX_GPIO_HIGH; + else + ret = WM97XX_GPIO_LOW; + + mutex_unlock(&wm->codec_mutex); + return ret; +} +EXPORT_SYMBOL_GPL(wm97xx_get_gpio); + +/** + * wm97xx_set_gpio - Set the status of a codec GPIO. + * @wm: wm97xx device. + * @gpio: gpio + * + * + * Set the status of a codec GPIO pin + */ + +void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio, + enum wm97xx_gpio_status status) +{ + u16 reg; + + mutex_lock(&wm->codec_mutex); + reg = wm97xx_reg_read(wm, AC97_GPIO_STATUS); + + if (status & WM97XX_GPIO_HIGH) + reg |= gpio; + else + reg &= ~gpio; + + if (wm->id == WM9712_ID2) + wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg << 1); + else + wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg); + mutex_unlock(&wm->codec_mutex); +} +EXPORT_SYMBOL_GPL(wm97xx_set_gpio); + +/* + * Codec GPIO pin configuration, this sets pin direction, polarity, + * stickyness and wake up. + */ +void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio, enum wm97xx_gpio_dir dir, + enum wm97xx_gpio_pol pol, enum wm97xx_gpio_sticky sticky, + enum wm97xx_gpio_wake wake) +{ + u16 reg; + + mutex_lock(&wm->codec_mutex); + reg = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); + + if (pol == WM97XX_GPIO_POL_HIGH) + reg |= gpio; + else + reg &= ~gpio; + + wm97xx_reg_write(wm, AC97_GPIO_POLARITY, reg); + reg = wm97xx_reg_read(wm, AC97_GPIO_STICKY); + + if (sticky == WM97XX_GPIO_STICKY) + reg |= gpio; + else + reg &= ~gpio; + + wm97xx_reg_write(wm, AC97_GPIO_STICKY, reg); + reg = wm97xx_reg_read(wm, AC97_GPIO_WAKEUP); + + if (wake == WM97XX_GPIO_WAKE) + reg |= gpio; + else + reg &= ~gpio; + + wm97xx_reg_write(wm, AC97_GPIO_WAKEUP, reg); + reg = wm97xx_reg_read(wm, AC97_GPIO_CFG); + + if (dir == WM97XX_GPIO_IN) + reg |= gpio; + else + reg &= ~gpio; + + wm97xx_reg_write(wm, AC97_GPIO_CFG, reg); + mutex_unlock(&wm->codec_mutex); +} +EXPORT_SYMBOL_GPL(wm97xx_config_gpio); + +/* + * Configure the WM97XX_PRP value to use while system is suspended. + * If a value other than 0 is set then WM97xx pen detection will be + * left enabled in the configured mode while the system is in suspend, + * the device has users and suspend has not been disabled via the + * wakeup sysfs entries. + * + * @wm: WM97xx device to configure + * @mode: WM97XX_PRP value to configure while suspended + */ +void wm97xx_set_suspend_mode(struct wm97xx *wm, u16 mode) +{ + wm->suspend_mode = mode; + device_init_wakeup(&wm->input_dev->dev, mode != 0); +} +EXPORT_SYMBOL_GPL(wm97xx_set_suspend_mode); + +/* + * Handle a pen down interrupt. + */ +static void wm97xx_pen_irq_worker(struct work_struct *work) +{ + struct wm97xx *wm = container_of(work, struct wm97xx, pen_event_work); + int pen_was_down = wm->pen_is_down; + + /* do we need to enable the touch panel reader */ + if (wm->id == WM9705_ID2) { + if (wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD) & + WM97XX_PEN_DOWN) + wm->pen_is_down = 1; + else + wm->pen_is_down = 0; + } else { + u16 status, pol; + mutex_lock(&wm->codec_mutex); + status = wm97xx_reg_read(wm, AC97_GPIO_STATUS); + pol = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); + + if (WM97XX_GPIO_13 & pol & status) { + wm->pen_is_down = 1; + wm97xx_reg_write(wm, AC97_GPIO_POLARITY, pol & + ~WM97XX_GPIO_13); + } else { + wm->pen_is_down = 0; + wm97xx_reg_write(wm, AC97_GPIO_POLARITY, pol | + WM97XX_GPIO_13); + } + + if (wm->id == WM9712_ID2) + wm97xx_reg_write(wm, AC97_GPIO_STATUS, (status & + ~WM97XX_GPIO_13) << 1); + else + wm97xx_reg_write(wm, AC97_GPIO_STATUS, status & + ~WM97XX_GPIO_13); + mutex_unlock(&wm->codec_mutex); + } + + /* If the system is not using continuous mode or it provides a + * pen down operation then we need to schedule polls while the + * pen is down. Otherwise the machine driver is responsible + * for scheduling reads. + */ + if (!wm->mach_ops->acc_enabled || wm->mach_ops->acc_pen_down) { + if (wm->pen_is_down && !pen_was_down) { + /* Data is not availiable immediately on pen down */ + queue_delayed_work(wm->ts_workq, &wm->ts_reader, 1); + } + + /* Let ts_reader report the pen up for debounce. */ + if (!wm->pen_is_down && pen_was_down) + wm->pen_is_down = 1; + } + + if (!wm->pen_is_down && wm->mach_ops->acc_enabled) + wm->mach_ops->acc_pen_up(wm); + + wm->mach_ops->irq_enable(wm, 1); +} + +/* + * Codec PENDOWN irq handler + * + * We have to disable the codec interrupt in the handler because it + * can take upto 1ms to clear the interrupt source. We schedule a task + * in a work queue to do the actual interaction with the chip. The + * interrupt is then enabled again in the slow handler when the source + * has been cleared. + */ +static irqreturn_t wm97xx_pen_interrupt(int irq, void *dev_id) +{ + struct wm97xx *wm = dev_id; + + if (!work_pending(&wm->pen_event_work)) { + wm->mach_ops->irq_enable(wm, 0); + queue_work(wm->ts_workq, &wm->pen_event_work); + } + + return IRQ_HANDLED; +} + +/* + * initialise pen IRQ handler and workqueue + */ +static int wm97xx_init_pen_irq(struct wm97xx *wm) +{ + u16 reg; + + /* If an interrupt is supplied an IRQ enable operation must also be + * provided. */ + BUG_ON(!wm->mach_ops->irq_enable); + + if (request_irq(wm->pen_irq, wm97xx_pen_interrupt, + IRQF_SHARED | IRQF_SAMPLE_RANDOM, + "wm97xx-pen", wm)) { + dev_err(wm->dev, + "Failed to register pen down interrupt, polling"); + wm->pen_irq = 0; + return -EINVAL; + } + + /* Configure GPIO as interrupt source on WM971x */ + if (wm->id != WM9705_ID2) { + BUG_ON(!wm->mach_ops->irq_gpio); + reg = wm97xx_reg_read(wm, AC97_MISC_AFE); + wm97xx_reg_write(wm, AC97_MISC_AFE, + reg & ~(wm->mach_ops->irq_gpio)); + reg = wm97xx_reg_read(wm, 0x5a); + wm97xx_reg_write(wm, 0x5a, reg & ~0x0001); + } + + return 0; +} + +static int wm97xx_read_samples(struct wm97xx *wm) +{ + struct wm97xx_data data; + int rc; + + mutex_lock(&wm->codec_mutex); + + if (wm->mach_ops && wm->mach_ops->acc_enabled) + rc = wm->mach_ops->acc_pen_down(wm); + else + rc = wm->codec->poll_touch(wm, &data); + + if (rc & RC_PENUP) { + if (wm->pen_is_down) { + wm->pen_is_down = 0; + dev_dbg(wm->dev, "pen up\n"); + input_report_abs(wm->input_dev, ABS_PRESSURE, 0); + input_sync(wm->input_dev); + } else if (!(rc & RC_AGAIN)) { + /* We need high frequency updates only while + * pen is down, the user never will be able to + * touch screen faster than a few times per + * second... On the other hand, when the user + * is actively working with the touchscreen we + * don't want to lose the quick response. So we + * will slowly increase sleep time after the + * pen is up and quicky restore it to ~one task + * switch when pen is down again. + */ + if (wm->ts_reader_interval < HZ / 10) + wm->ts_reader_interval++; + } + + } else if (rc & RC_VALID) { + dev_dbg(wm->dev, + "pen down: x=%x:%d, y=%x:%d, pressure=%x:%d\n", + data.x >> 12, data.x & 0xfff, data.y >> 12, + data.y & 0xfff, data.p >> 12, data.p & 0xfff); + input_report_abs(wm->input_dev, ABS_X, data.x & 0xfff); + input_report_abs(wm->input_dev, ABS_Y, data.y & 0xfff); + input_report_abs(wm->input_dev, ABS_PRESSURE, data.p & 0xfff); + input_sync(wm->input_dev); + wm->pen_is_down = 1; + wm->ts_reader_interval = wm->ts_reader_min_interval; + } else if (rc & RC_PENDOWN) { + dev_dbg(wm->dev, "pen down\n"); + wm->pen_is_down = 1; + wm->ts_reader_interval = wm->ts_reader_min_interval; + } + + mutex_unlock(&wm->codec_mutex); + return rc; +} + +/* +* The touchscreen sample reader. +*/ +static void wm97xx_ts_reader(struct work_struct *work) +{ + int rc; + struct wm97xx *wm = container_of(work, struct wm97xx, ts_reader.work); + + BUG_ON(!wm->codec); + + do { + rc = wm97xx_read_samples(wm); + } while (rc & RC_AGAIN); + + if (wm->pen_is_down || !wm->pen_irq) + queue_delayed_work(wm->ts_workq, &wm->ts_reader, + wm->ts_reader_interval); +} + +/** + * wm97xx_ts_input_open - Open the touch screen input device. + * @idev: Input device to be opened. + * + * Called by the input sub system to open a wm97xx touchscreen device. + * Starts the touchscreen thread and touch digitiser. + */ +static int wm97xx_ts_input_open(struct input_dev *idev) +{ + struct wm97xx *wm = input_get_drvdata(idev); + + wm->ts_workq = create_singlethread_workqueue("kwm97xx"); + if (wm->ts_workq == NULL) { + dev_err(wm->dev, + "Failed to create workqueue\n"); + return -EINVAL; + } + + /* start digitiser */ + if (wm->mach_ops && wm->mach_ops->acc_enabled) + wm->codec->acc_enable(wm, 1); + wm->codec->dig_enable(wm, 1); + + INIT_DELAYED_WORK(&wm->ts_reader, wm97xx_ts_reader); + INIT_WORK(&wm->pen_event_work, wm97xx_pen_irq_worker); + + wm->ts_reader_min_interval = HZ >= 100 ? HZ / 100 : 1; + if (wm->ts_reader_min_interval < 1) + wm->ts_reader_min_interval = 1; + wm->ts_reader_interval = wm->ts_reader_min_interval; + + wm->pen_is_down = 0; + if (wm->pen_irq) + wm97xx_init_pen_irq(wm); + else + dev_err(wm->dev, "No IRQ specified\n"); + + /* If we either don't have an interrupt for pen down events or + * failed to acquire it then we need to poll. + */ + if (wm->pen_irq == 0) + queue_delayed_work(wm->ts_workq, &wm->ts_reader, + wm->ts_reader_interval); + + return 0; +} + +/** + * wm97xx_ts_input_close - Close the touch screen input device. + * @idev: Input device to be closed. + * + * Called by the input sub system to close a wm97xx touchscreen + * device. Kills the touchscreen thread and stops the touch + * digitiser. + */ + +static void wm97xx_ts_input_close(struct input_dev *idev) +{ + struct wm97xx *wm = input_get_drvdata(idev); + u16 reg; + + if (wm->pen_irq) { + /* Return the interrupt to GPIO usage (disabling it) */ + if (wm->id != WM9705_ID2) { + BUG_ON(!wm->mach_ops->irq_gpio); + reg = wm97xx_reg_read(wm, AC97_MISC_AFE); + wm97xx_reg_write(wm, AC97_MISC_AFE, + reg | wm->mach_ops->irq_gpio); + } + + free_irq(wm->pen_irq, wm); + } + + wm->pen_is_down = 0; + + /* Balance out interrupt disables/enables */ + if (cancel_work_sync(&wm->pen_event_work)) + wm->mach_ops->irq_enable(wm, 1); + + /* ts_reader rearms itself so we need to explicitly stop it + * before we destroy the workqueue. + */ + cancel_delayed_work_sync(&wm->ts_reader); + + destroy_workqueue(wm->ts_workq); + + /* stop digitiser */ + wm->codec->dig_enable(wm, 0); + if (wm->mach_ops && wm->mach_ops->acc_enabled) + wm->codec->acc_enable(wm, 0); +} + +static int wm97xx_probe(struct device *dev) +{ + struct wm97xx *wm; + int ret = 0, id = 0; + + wm = kzalloc(sizeof(struct wm97xx), GFP_KERNEL); + if (!wm) + return -ENOMEM; + mutex_init(&wm->codec_mutex); + + wm->dev = dev; + dev->driver_data = wm; + wm->ac97 = to_ac97_t(dev); + + /* check that we have a supported codec */ + id = wm97xx_reg_read(wm, AC97_VENDOR_ID1); + if (id != WM97XX_ID1) { + dev_err(dev, "Device with vendor %04x is not a wm97xx\n", id); + ret = -ENODEV; + goto alloc_err; + } + + wm->id = wm97xx_reg_read(wm, AC97_VENDOR_ID2); + + dev_info(wm->dev, "detected a wm97%02x codec\n", wm->id & 0xff); + + switch (wm->id & 0xff) { +#ifdef CONFIG_TOUCHSCREEN_WM9705 + case 0x05: + wm->codec = &wm9705_codec; + break; +#endif +#ifdef CONFIG_TOUCHSCREEN_WM9712 + case 0x12: + wm->codec = &wm9712_codec; + break; +#endif +#ifdef CONFIG_TOUCHSCREEN_WM9713 + case 0x13: + wm->codec = &wm9713_codec; + break; +#endif + default: + dev_err(wm->dev, "Support for wm97%02x not compiled in.\n", + wm->id & 0xff); + ret = -ENODEV; + goto alloc_err; + } + + wm->input_dev = input_allocate_device(); + if (wm->input_dev == NULL) { + ret = -ENOMEM; + goto alloc_err; + } + + /* set up touch configuration */ + wm->input_dev->name = "wm97xx touchscreen"; + wm->input_dev->open = wm97xx_ts_input_open; + wm->input_dev->close = wm97xx_ts_input_close; + set_bit(EV_ABS, wm->input_dev->evbit); + set_bit(ABS_X, wm->input_dev->absbit); + set_bit(ABS_Y, wm->input_dev->absbit); + set_bit(ABS_PRESSURE, wm->input_dev->absbit); + input_set_abs_params(wm->input_dev, ABS_X, abs_x[0], abs_x[1], + abs_x[2], 0); + input_set_abs_params(wm->input_dev, ABS_Y, abs_y[0], abs_y[1], + abs_y[2], 0); + input_set_abs_params(wm->input_dev, ABS_PRESSURE, abs_p[0], abs_p[1], + abs_p[2], 0); + input_set_drvdata(wm->input_dev, wm); + wm->input_dev->dev.parent = dev; + ret = input_register_device(wm->input_dev); + if (ret < 0) + goto dev_alloc_err; + + /* set up physical characteristics */ + wm->codec->phy_init(wm); + + /* load gpio cache */ + wm->gpio[0] = wm97xx_reg_read(wm, AC97_GPIO_CFG); + wm->gpio[1] = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); + wm->gpio[2] = wm97xx_reg_read(wm, AC97_GPIO_STICKY); + wm->gpio[3] = wm97xx_reg_read(wm, AC97_GPIO_WAKEUP); + wm->gpio[4] = wm97xx_reg_read(wm, AC97_GPIO_STATUS); + wm->gpio[5] = wm97xx_reg_read(wm, AC97_MISC_AFE); + + /* register our battery device */ + wm->battery_dev = platform_device_alloc("wm97xx-battery", -1); + if (!wm->battery_dev) { + ret = -ENOMEM; + goto batt_err; + } + platform_set_drvdata(wm->battery_dev, wm); + wm->battery_dev->dev.parent = dev; + ret = platform_device_add(wm->battery_dev); + if (ret < 0) + goto batt_reg_err; + + /* register our extended touch device (for machine specific + * extensions) */ + wm->touch_dev = platform_device_alloc("wm97xx-touch", -1); + if (!wm->touch_dev) { + ret = -ENOMEM; + goto touch_err; + } + platform_set_drvdata(wm->touch_dev, wm); + wm->touch_dev->dev.parent = dev; + ret = platform_device_add(wm->touch_dev); + if (ret < 0) + goto touch_reg_err; + + return ret; + + touch_reg_err: + platform_device_put(wm->touch_dev); + touch_err: + platform_device_unregister(wm->battery_dev); + wm->battery_dev = NULL; + batt_reg_err: + platform_device_put(wm->battery_dev); + batt_err: + input_unregister_device(wm->input_dev); + wm->input_dev = NULL; + dev_alloc_err: + input_free_device(wm->input_dev); + alloc_err: + kfree(wm); + + return ret; +} + +static int wm97xx_remove(struct device *dev) +{ + struct wm97xx *wm = dev_get_drvdata(dev); + + platform_device_unregister(wm->battery_dev); + platform_device_unregister(wm->touch_dev); + input_unregister_device(wm->input_dev); + kfree(wm); + + return 0; +} + +#ifdef CONFIG_PM +static int wm97xx_suspend(struct device *dev, pm_message_t state) +{ + struct wm97xx *wm = dev_get_drvdata(dev); + u16 reg; + int suspend_mode; + + if (device_may_wakeup(&wm->input_dev->dev)) + suspend_mode = wm->suspend_mode; + else + suspend_mode = 0; + + if (wm->input_dev->users) + cancel_delayed_work_sync(&wm->ts_reader); + + /* Power down the digitiser (bypassing the cache for resume) */ + reg = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER2); + reg &= ~WM97XX_PRP_DET_DIG; + if (wm->input_dev->users) + reg |= suspend_mode; + wm->ac97->bus->ops->write(wm->ac97, AC97_WM97XX_DIGITISER2, reg); + + /* WM9713 has an additional power bit - turn it off if there + * are no users or if suspend mode is zero. */ + if (wm->id == WM9713_ID2 && + (!wm->input_dev->users || !suspend_mode)) { + reg = wm97xx_reg_read(wm, AC97_EXTENDED_MID) | 0x8000; + wm97xx_reg_write(wm, AC97_EXTENDED_MID, reg); + } + + return 0; +} + +static int wm97xx_resume(struct device *dev) +{ + struct wm97xx *wm = dev_get_drvdata(dev); + + /* restore digitiser and gpios */ + if (wm->id == WM9713_ID2) { + wm97xx_reg_write(wm, AC97_WM9713_DIG1, wm->dig[0]); + wm97xx_reg_write(wm, 0x5a, wm->misc); + if (wm->input_dev->users) { + u16 reg; + reg = wm97xx_reg_read(wm, AC97_EXTENDED_MID) & 0x7fff; + wm97xx_reg_write(wm, AC97_EXTENDED_MID, reg); + } + } + + wm97xx_reg_write(wm, AC97_WM9713_DIG2, wm->dig[1]); + wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2]); + + wm97xx_reg_write(wm, AC97_GPIO_CFG, wm->gpio[0]); + wm97xx_reg_write(wm, AC97_GPIO_POLARITY, wm->gpio[1]); + wm97xx_reg_write(wm, AC97_GPIO_STICKY, wm->gpio[2]); + wm97xx_reg_write(wm, AC97_GPIO_WAKEUP, wm->gpio[3]); + wm97xx_reg_write(wm, AC97_GPIO_STATUS, wm->gpio[4]); + wm97xx_reg_write(wm, AC97_MISC_AFE, wm->gpio[5]); + + if (wm->input_dev->users && !wm->pen_irq) { + wm->ts_reader_interval = wm->ts_reader_min_interval; + queue_delayed_work(wm->ts_workq, &wm->ts_reader, + wm->ts_reader_interval); + } + + return 0; +} + +#else +#define wm97xx_suspend NULL +#define wm97xx_resume NULL +#endif + +/* + * Machine specific operations + */ +int wm97xx_register_mach_ops(struct wm97xx *wm, + struct wm97xx_mach_ops *mach_ops) +{ + mutex_lock(&wm->codec_mutex); + if (wm->mach_ops) { + mutex_unlock(&wm->codec_mutex); + return -EINVAL; + } + wm->mach_ops = mach_ops; + mutex_unlock(&wm->codec_mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(wm97xx_register_mach_ops); + +void wm97xx_unregister_mach_ops(struct wm97xx *wm) +{ + mutex_lock(&wm->codec_mutex); + wm->mach_ops = NULL; + mutex_unlock(&wm->codec_mutex); +} +EXPORT_SYMBOL_GPL(wm97xx_unregister_mach_ops); + +static struct device_driver wm97xx_driver = { + .name = "ac97", + .bus = &ac97_bus_type, + .owner = THIS_MODULE, + .probe = wm97xx_probe, + .remove = wm97xx_remove, + .suspend = wm97xx_suspend, + .resume = wm97xx_resume, +}; + +static int __init wm97xx_init(void) +{ + return driver_register(&wm97xx_driver); +} + +static void __exit wm97xx_exit(void) +{ + driver_unregister(&wm97xx_driver); +} + +module_init(wm97xx_init); +module_exit(wm97xx_exit); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM97xx Core - Touch Screen / AUX ADC / GPIO Driver"); +MODULE_LICENSE("GPL"); |
