diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/input.c | 4 | ||||
| -rw-r--r-- | drivers/input/keyboard/omap-keypad.c | 22 | ||||
| -rw-r--r-- | drivers/input/keyboard/sh_keysc.c | 3 | ||||
| -rw-r--r-- | drivers/input/misc/Kconfig | 20 | ||||
| -rw-r--r-- | drivers/input/misc/Makefile | 3 | ||||
| -rw-r--r-- | drivers/input/misc/pcap_keys.c | 144 | ||||
| -rw-r--r-- | drivers/input/misc/wm831x-on.c | 163 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
| -rw-r--r-- | drivers/input/touchscreen/pcap_ts.c | 271 |
10 files changed, 627 insertions, 13 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 851791d..556539d 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -1265,14 +1265,14 @@ static struct device_type input_dev_type = { .uevent = input_dev_uevent, }; -static char *input_nodename(struct device *dev) +static char *input_devnode(struct device *dev, mode_t *mode) { return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev)); } struct class input_class = { .name = "input", - .nodename = input_nodename, + .devnode = input_devnode, }; EXPORT_SYMBOL_GPL(input_class); diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c index 87ec7b1..bba85ad 100644 --- a/drivers/input/keyboard/omap-keypad.c +++ b/drivers/input/keyboard/omap-keypad.c @@ -116,7 +116,7 @@ static irqreturn_t omap_kp_interrupt(int irq, void *dev_id) } } else /* disable keyboard interrupt and schedule for handling */ - omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); tasklet_schedule(&kp_tasklet); @@ -143,20 +143,20 @@ static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state) } else { /* disable keyboard interrupt and schedule for handling */ - omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); /* read the keypad status */ - omap_writew(0xff, OMAP_MPUIO_BASE + OMAP_MPUIO_KBC); + omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); for (col = 0; col < omap_kp->cols; col++) { omap_writew(~(1 << col) & 0xff, - OMAP_MPUIO_BASE + OMAP_MPUIO_KBC); + OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); udelay(omap_kp->delay); - state[col] = ~omap_readw(OMAP_MPUIO_BASE + + state[col] = ~omap_readw(OMAP1_MPUIO_BASE + OMAP_MPUIO_KBR_LATCH) & 0xff; } - omap_writew(0x00, OMAP_MPUIO_BASE + OMAP_MPUIO_KBC); + omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); udelay(2); } } @@ -234,7 +234,7 @@ static void omap_kp_tasklet(unsigned long data) for (i = 0; i < omap_kp_data->rows; i++) enable_irq(gpio_to_irq(row_gpios[i])); } else { - omap_writew(0, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); kp_cur_group = -1; } } @@ -317,7 +317,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev) /* Disable the interrupt for the MPUIO keyboard */ if (!cpu_is_omap24xx()) - omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); keymap = pdata->keymap; @@ -391,7 +391,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev) } if (pdata->dbounce) - omap_writew(0xff, OMAP_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING); + omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING); /* scan current status and enable interrupt */ omap_kp_scan_keypad(omap_kp, keypad_state); @@ -402,7 +402,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev) "omap-keypad", omap_kp) < 0) goto err4; } - omap_writew(0, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); } else { for (irq_idx = 0; irq_idx < omap_kp->rows; irq_idx++) { if (request_irq(gpio_to_irq(row_gpios[irq_idx]), @@ -449,7 +449,7 @@ static int __devexit omap_kp_remove(struct platform_device *pdev) free_irq(gpio_to_irq(row_gpios[i]), 0); } } else { - omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); free_irq(omap_kp->irq, 0); } diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c index 0714bf2..887af79 100644 --- a/drivers/input/keyboard/sh_keysc.c +++ b/drivers/input/keyboard/sh_keysc.c @@ -80,6 +80,9 @@ static irqreturn_t sh_keysc_isr(int irq, void *dev_id) iowrite16(KYCR2_IRQ_LEVEL | (keyin_set << 8), priv->iomem_base + KYCR2_OFFS); + if (pdata->kycr2_delay) + udelay(pdata->kycr2_delay); + keys ^= ~0; keys &= (1 << (sh_keysc_mode[pdata->mode].keyin * sh_keysc_mode[pdata->mode].keyout)) - 1; diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index cbe21bc..1a50be3 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -279,4 +279,24 @@ config INPUT_BFIN_ROTARY To compile this driver as a module, choose M here: the module will be called bfin-rotary. +config INPUT_WM831X_ON + tristate "WM831X ON pin" + depends on MFD_WM831X + help + Support the ON pin of WM831X PMICs as an input device + reporting power button status. + + To compile this driver as a module, choose M here: the module + will be called wm831x_on. + +config INPUT_PCAP + tristate "Motorola EZX PCAP misc input events" + depends on EZX_PCAP + help + Say Y here if you want to use Power key and Headphone button + on Motorola EZX phones. + + To compile this driver as a module, choose M here: the + module will be called pcap_keys. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 79c1e9a..bf4db62 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o +obj-$(CONFIG_INPUT_PCAP) += pcap_keys.o obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o @@ -26,4 +27,6 @@ obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON) += twl4030-pwrbutton.o obj-$(CONFIG_INPUT_UINPUT) += uinput.o obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o +obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o obj-$(CONFIG_INPUT_YEALINK) += yealink.o + diff --git a/drivers/input/misc/pcap_keys.c b/drivers/input/misc/pcap_keys.c new file mode 100644 index 0000000..7ea9693 --- /dev/null +++ b/drivers/input/misc/pcap_keys.c @@ -0,0 +1,144 @@ +/* + * Input driver for PCAP events: + * * Power key + * * Headphone button + * + * Copyright (c) 2008,2009 Ilya Petrov <ilya.muromec@gmail.com> + * + * 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/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/mfd/ezx-pcap.h> + +struct pcap_keys { + struct pcap_chip *pcap; + struct input_dev *input; +}; + +/* PCAP2 interrupts us on keypress */ +static irqreturn_t pcap_keys_handler(int irq, void *_pcap_keys) +{ + struct pcap_keys *pcap_keys = _pcap_keys; + int pirq = irq_to_pcap(pcap_keys->pcap, irq); + u32 pstat; + + ezx_pcap_read(pcap_keys->pcap, PCAP_REG_PSTAT, &pstat); + pstat &= 1 << pirq; + + switch (pirq) { + case PCAP_IRQ_ONOFF: + input_report_key(pcap_keys->input, KEY_POWER, !pstat); + break; + case PCAP_IRQ_MIC: + input_report_key(pcap_keys->input, KEY_HP, !pstat); + break; + } + + input_sync(pcap_keys->input); + + return IRQ_HANDLED; +} + +static int __devinit pcap_keys_probe(struct platform_device *pdev) +{ + int err = -ENOMEM; + struct pcap_keys *pcap_keys; + struct input_dev *input_dev; + + pcap_keys = kmalloc(sizeof(struct pcap_keys), GFP_KERNEL); + if (!pcap_keys) + return err; + + pcap_keys->pcap = dev_get_drvdata(pdev->dev.parent); + + input_dev = input_allocate_device(); + if (!input_dev) + goto fail; + + pcap_keys->input = input_dev; + + platform_set_drvdata(pdev, pcap_keys); + input_dev->name = pdev->name; + input_dev->phys = "pcap-keys/input0"; + input_dev->id.bustype = BUS_HOST; + input_dev->dev.parent = &pdev->dev; + + __set_bit(EV_KEY, input_dev->evbit); + __set_bit(KEY_POWER, input_dev->keybit); + __set_bit(KEY_HP, input_dev->keybit); + + err = input_register_device(input_dev); + if (err) + goto fail_allocate; + + err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), + pcap_keys_handler, 0, "Power key", pcap_keys); + if (err) + goto fail_register; + + err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), + pcap_keys_handler, 0, "Headphone button", pcap_keys); + if (err) + goto fail_pwrkey; + + return 0; + +fail_pwrkey: + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys); +fail_register: + input_unregister_device(input_dev); + goto fail; +fail_allocate: + input_free_device(input_dev); +fail: + kfree(pcap_keys); + return err; +} + +static int __devexit pcap_keys_remove(struct platform_device *pdev) +{ + struct pcap_keys *pcap_keys = platform_get_drvdata(pdev); + + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys); + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), pcap_keys); + + input_unregister_device(pcap_keys->input); + kfree(pcap_keys); + + return 0; +} + +static struct platform_driver pcap_keys_device_driver = { + .probe = pcap_keys_probe, + .remove = __devexit_p(pcap_keys_remove), + .driver = { + .name = "pcap-keys", + .owner = THIS_MODULE, + } +}; + +static int __init pcap_keys_init(void) +{ + return platform_driver_register(&pcap_keys_device_driver); +}; + +static void __exit pcap_keys_exit(void) +{ + platform_driver_unregister(&pcap_keys_device_driver); +}; + +module_init(pcap_keys_init); +module_exit(pcap_keys_exit); + +MODULE_DESCRIPTION("Motorola PCAP2 input events driver"); +MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcap_keys"); diff --git a/drivers/input/misc/wm831x-on.c b/drivers/input/misc/wm831x-on.c new file mode 100644 index 0000000..ba4f5dd --- /dev/null +++ b/drivers/input/misc/wm831x-on.c @@ -0,0 +1,163 @@ +/** + * wm831x-on.c - WM831X ON pin driver + * + * Copyright (C) 2009 Wolfson Microelectronics plc + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * 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/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/workqueue.h> +#include <linux/mfd/wm831x/core.h> + +struct wm831x_on { + struct input_dev *dev; + struct delayed_work work; + struct wm831x *wm831x; +}; + +/* + * The chip gives us an interrupt when the ON pin is asserted but we + * then need to poll to see when the pin is deasserted. + */ +static void wm831x_poll_on(struct work_struct *work) +{ + struct wm831x_on *wm831x_on = container_of(work, struct wm831x_on, + work.work); + struct wm831x *wm831x = wm831x_on->wm831x; + int poll, ret; + + ret = wm831x_reg_read(wm831x, WM831X_ON_PIN_CONTROL); + if (ret >= 0) { + poll = !(ret & WM831X_ON_PIN_STS); + + input_report_key(wm831x_on->dev, KEY_POWER, poll); + input_sync(wm831x_on->dev); + } else { + dev_err(wm831x->dev, "Failed to read ON status: %d\n", ret); + poll = 1; + } + + if (poll) + schedule_delayed_work(&wm831x_on->work, 100); +} + +static irqreturn_t wm831x_on_irq(int irq, void *data) +{ + struct wm831x_on *wm831x_on = data; + + schedule_delayed_work(&wm831x_on->work, 0); + + return IRQ_HANDLED; +} + +static int __devinit wm831x_on_probe(struct platform_device *pdev) +{ + struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); + struct wm831x_on *wm831x_on; + int irq = platform_get_irq(pdev, 0); + int ret; + + wm831x_on = kzalloc(sizeof(struct wm831x_on), GFP_KERNEL); + if (!wm831x_on) { + dev_err(&pdev->dev, "Can't allocate data\n"); + return -ENOMEM; + } + + wm831x_on->wm831x = wm831x; + INIT_DELAYED_WORK(&wm831x_on->work, wm831x_poll_on); + + wm831x_on->dev = input_allocate_device(); + if (!wm831x_on->dev) { + dev_err(&pdev->dev, "Can't allocate input dev\n"); + ret = -ENOMEM; + goto err; + } + + wm831x_on->dev->evbit[0] = BIT_MASK(EV_KEY); + wm831x_on->dev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER); + wm831x_on->dev->name = "wm831x_on"; + wm831x_on->dev->phys = "wm831x_on/input0"; + wm831x_on->dev->dev.parent = &pdev->dev; + + ret = wm831x_request_irq(wm831x, irq, wm831x_on_irq, + IRQF_TRIGGER_RISING, "wm831x_on", wm831x_on); + if (ret < 0) { + dev_err(&pdev->dev, "Unable to request IRQ: %d\n", ret); + goto err_input_dev; + } + ret = input_register_device(wm831x_on->dev); + if (ret) { + dev_dbg(&pdev->dev, "Can't register input device: %d\n", ret); + goto err_irq; + } + + platform_set_drvdata(pdev, wm831x_on); + + return 0; + +err_irq: + wm831x_free_irq(wm831x, irq, NULL); +err_input_dev: + input_free_device(wm831x_on->dev); +err: + kfree(wm831x_on); + return ret; +} + +static int __devexit wm831x_on_remove(struct platform_device *pdev) +{ + struct wm831x_on *wm831x_on = platform_get_drvdata(pdev); + int irq = platform_get_irq(pdev, 0); + + wm831x_free_irq(wm831x_on->wm831x, irq, wm831x_on); + cancel_delayed_work_sync(&wm831x_on->work); + input_unregister_device(wm831x_on->dev); + kfree(wm831x_on); + + return 0; +} + +static struct platform_driver wm831x_on_driver = { + .probe = wm831x_on_probe, + .remove = __devexit_p(wm831x_on_remove), + .driver = { + .name = "wm831x-on", + .owner = THIS_MODULE, + }, +}; + +static int __init wm831x_on_init(void) +{ + return platform_driver_register(&wm831x_on_driver); +} +module_init(wm831x_on_init); + +static void __exit wm831x_on_exit(void) +{ + platform_driver_unregister(&wm831x_on_driver); +} +module_exit(wm831x_on_exit); + +MODULE_ALIAS("platform:wm831x-on"); +MODULE_DESCRIPTION("WM831x ON pin"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); + diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 87a1ae6..ab02d72 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -510,4 +510,13 @@ config TOUCHSCREEN_W90X900 To compile this driver as a module, choose M here: the module will be called w90p910_ts. +config TOUCHSCREEN_PCAP + tristate "Motorola PCAP touchscreen" + depends on EZX_PCAP + help + Say Y here if you have a Motorola EZX telephone and + want to enable support for the built-in touchscreen. + + To compile this driver as a module, choose M here: the + module will be called pcap_ts. endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 3e1c5e0..4599bf7 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -40,3 +40,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ATMEL) += atmel-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o +obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o diff --git a/drivers/input/touchscreen/pcap_ts.c b/drivers/input/touchscreen/pcap_ts.c new file mode 100644 index 0000000..67fcd33 --- /dev/null +++ b/drivers/input/touchscreen/pcap_ts.c @@ -0,0 +1,271 @@ +/* + * Driver for Motorola PCAP2 touchscreen as found in the EZX phone platform. + * + * Copyright (C) 2006 Harald Welte <laforge@openezx.org> + * Copyright (C) 2009 Daniel Ribeiro <drwyrm@gmail.com> + * + * 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/module.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/pm.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/mfd/ezx-pcap.h> + +struct pcap_ts { + struct pcap_chip *pcap; + struct input_dev *input; + struct delayed_work work; + u16 x, y; + u16 pressure; + u8 read_state; +}; + +#define SAMPLE_DELAY 20 /* msecs */ + +#define X_AXIS_MIN 0 +#define X_AXIS_MAX 1023 +#define Y_AXIS_MAX X_AXIS_MAX +#define Y_AXIS_MIN X_AXIS_MIN +#define PRESSURE_MAX X_AXIS_MAX +#define PRESSURE_MIN X_AXIS_MIN + +static void pcap_ts_read_xy(void *data, u16 res[2]) +{ + struct pcap_ts *pcap_ts = data; + + switch (pcap_ts->read_state) { + case PCAP_ADC_TS_M_PRESSURE: + /* pressure reading is unreliable */ + if (res[0] > PRESSURE_MIN && res[0] < PRESSURE_MAX) + pcap_ts->pressure = res[0]; + pcap_ts->read_state = PCAP_ADC_TS_M_XY; + schedule_delayed_work(&pcap_ts->work, 0); + break; + case PCAP_ADC_TS_M_XY: + pcap_ts->y = res[0]; + pcap_ts->x = res[1]; + if (pcap_ts->x <= X_AXIS_MIN || pcap_ts->x >= X_AXIS_MAX || + pcap_ts->y <= Y_AXIS_MIN || pcap_ts->y >= Y_AXIS_MAX) { + /* pen has been released */ + input_report_abs(pcap_ts->input, ABS_PRESSURE, 0); + input_report_key(pcap_ts->input, BTN_TOUCH, 0); + + pcap_ts->read_state = PCAP_ADC_TS_M_STANDBY; + schedule_delayed_work(&pcap_ts->work, 0); + } else { + /* pen is touching the screen */ + input_report_abs(pcap_ts->input, ABS_X, pcap_ts->x); + input_report_abs(pcap_ts->input, ABS_Y, pcap_ts->y); + input_report_key(pcap_ts->input, BTN_TOUCH, 1); + input_report_abs(pcap_ts->input, ABS_PRESSURE, + pcap_ts->pressure); + + /* switch back to pressure read mode */ + pcap_ts->read_state = PCAP_ADC_TS_M_PRESSURE; + schedule_delayed_work(&pcap_ts->work, + msecs_to_jiffies(SAMPLE_DELAY)); + } + input_sync(pcap_ts->input); + break; + default: + dev_warn(&pcap_ts->input->dev, + "pcap_ts: Warning, unhandled read_state %d\n", + pcap_ts->read_state); + break; + } +} + +static void pcap_ts_work(struct work_struct *work) +{ + struct delayed_work *dw = container_of(work, struct delayed_work, work); + struct pcap_ts *pcap_ts = container_of(dw, struct pcap_ts, work); + u8 ch[2]; + + pcap_set_ts_bits(pcap_ts->pcap, + pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT); + + if (pcap_ts->read_state == PCAP_ADC_TS_M_STANDBY) + return; + + /* start adc conversion */ + ch[0] = PCAP_ADC_CH_TS_X1; + ch[1] = PCAP_ADC_CH_TS_Y1; + pcap_adc_async(pcap_ts->pcap, PCAP_ADC_BANK_1, 0, ch, + pcap_ts_read_xy, pcap_ts); +} + +static irqreturn_t pcap_ts_event_touch(int pirq, void *data) +{ + struct pcap_ts *pcap_ts = data; + + if (pcap_ts->read_state == PCAP_ADC_TS_M_STANDBY) { + pcap_ts->read_state = PCAP_ADC_TS_M_PRESSURE; + schedule_delayed_work(&pcap_ts->work, 0); + } + return IRQ_HANDLED; +} + +static int pcap_ts_open(struct input_dev *dev) +{ + struct pcap_ts *pcap_ts = input_get_drvdata(dev); + + pcap_ts->read_state = PCAP_ADC_TS_M_STANDBY; + schedule_delayed_work(&pcap_ts->work, 0); + + return 0; +} + +static void pcap_ts_close(struct input_dev *dev) +{ + struct pcap_ts *pcap_ts = input_get_drvdata(dev); + + cancel_delayed_work_sync(&pcap_ts->work); + + pcap_ts->read_state = PCAP_ADC_TS_M_NONTS; + pcap_set_ts_bits(pcap_ts->pcap, + pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT); +} + +static int __devinit pcap_ts_probe(struct platform_device *pdev) +{ + struct input_dev *input_dev; + struct pcap_ts *pcap_ts; + int err = -ENOMEM; + + pcap_ts = kzalloc(sizeof(*pcap_ts), GFP_KERNEL); + if (!pcap_ts) + return err; + + pcap_ts->pcap = dev_get_drvdata(pdev->dev.parent); + platform_set_drvdata(pdev, pcap_ts); + + input_dev = input_allocate_device(); + if (!input_dev) + goto fail; + + INIT_DELAYED_WORK(&pcap_ts->work, pcap_ts_work); + + pcap_ts->read_state = PCAP_ADC_TS_M_NONTS; + pcap_set_ts_bits(pcap_ts->pcap, + pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT); + + pcap_ts->input = input_dev; + input_set_drvdata(input_dev, pcap_ts); + + input_dev->name = "pcap-touchscreen"; + input_dev->phys = "pcap_ts/input0"; + input_dev->id.bustype = BUS_HOST; + input_dev->id.vendor = 0x0001; + input_dev->id.product = 0x0002; + input_dev->id.version = 0x0100; + input_dev->dev.parent = &pdev->dev; + input_dev->open = pcap_ts_open; + input_dev->close = pcap_ts_close; + + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(input_dev, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0); + input_set_abs_params(input_dev, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, PRESSURE_MIN, + PRESSURE_MAX, 0, 0); + + err = input_register_device(pcap_ts->input); + if (err) + goto fail_allocate; + + err = request_irq(pcap_to_irq(pcap_ts->pcap, PCAP_IRQ_TS), + pcap_ts_event_touch, 0, "Touch Screen", pcap_ts); + if (err) + goto fail_register; + + return 0; + +fail_register: + input_unregister_device(input_dev); + goto fail; +fail_allocate: + input_free_device(input_dev); +fail: + kfree(pcap_ts); + + return err; +} + +static int __devexit pcap_ts_remove(struct platform_device *pdev) +{ + struct pcap_ts *pcap_ts = platform_get_drvdata(pdev); + + free_irq(pcap_to_irq(pcap_ts->pcap, PCAP_IRQ_TS), pcap_ts); + cancel_delayed_work_sync(&pcap_ts->work); + + input_unregister_device(pcap_ts->input); + + kfree(pcap_ts); + + return 0; +} + +#ifdef CONFIG_PM +static int pcap_ts_suspend(struct device *dev) +{ + struct pcap_ts *pcap_ts = dev_get_drvdata(dev); + + pcap_set_ts_bits(pcap_ts->pcap, PCAP_ADC_TS_REF_LOWPWR); + return 0; +} + +static int pcap_ts_resume(struct device *dev) +{ + struct pcap_ts *pcap_ts = dev_get_drvdata(dev); + + pcap_set_ts_bits(pcap_ts->pcap, + pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT); + return 0; +} + +static struct dev_pm_ops pcap_ts_pm_ops = { + .suspend = pcap_ts_suspend, + .resume = pcap_ts_resume, +}; +#define PCAP_TS_PM_OPS (&pcap_ts_pm_ops) +#else +#define PCAP_TS_PM_OPS NULL +#endif + +static struct platform_driver pcap_ts_driver = { + .probe = pcap_ts_probe, + .remove = __devexit_p(pcap_ts_remove), + .driver = { + .name = "pcap-ts", + .owner = THIS_MODULE, + .pm = PCAP_TS_PM_OPS, + }, +}; + +static int __init pcap_ts_init(void) +{ + return platform_driver_register(&pcap_ts_driver); +} + +static void __exit pcap_ts_exit(void) +{ + platform_driver_unregister(&pcap_ts_driver); +} + +module_init(pcap_ts_init); +module_exit(pcap_ts_exit); + +MODULE_DESCRIPTION("Motorola PCAP2 touchscreen driver"); +MODULE_AUTHOR("Daniel Ribeiro / Harald Welte"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcap_ts"); |
