diff options
Diffstat (limited to 'drivers/media/pci/cx88/cx88-input.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-input.c | 635 |
1 files changed, 635 insertions, 0 deletions
diff --git a/drivers/media/pci/cx88/cx88-input.c b/drivers/media/pci/cx88/cx88-input.c new file mode 100644 index 0000000..ebf448c --- /dev/null +++ b/drivers/media/pci/cx88/cx88-input.c @@ -0,0 +1,635 @@ +/* + * + * Device driver for GPIO attached remote control interfaces + * on Conexant 2388x based TV/DVB cards. + * + * Copyright (c) 2003 Pavel Machek + * Copyright (c) 2004 Gerd Knorr + * Copyright (c) 2004, 2005 Chris Pascoe + * + * 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/init.h> +#include <linux/hrtimer.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/module.h> + +#include "cx88.h" +#include <media/rc-core.h> + +#define MODULE_NAME "cx88xx" + +/* ---------------------------------------------------------------------- */ + +struct cx88_IR { + struct cx88_core *core; + struct rc_dev *dev; + + int users; + + char name[32]; + char phys[32]; + + /* sample from gpio pin 16 */ + u32 sampling; + + /* poll external decoder */ + int polling; + struct hrtimer timer; + u32 gpio_addr; + u32 last_gpio; + u32 mask_keycode; + u32 mask_keydown; + u32 mask_keyup; +}; + +static unsigned ir_samplerate = 4; +module_param(ir_samplerate, uint, 0444); +MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4"); + +static int ir_debug; +module_param(ir_debug, int, 0644); /* debug level [IR] */ +MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); + +#define ir_dprintk(fmt, arg...) if (ir_debug) \ + printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg) + +#define dprintk(fmt, arg...) if (ir_debug) \ + printk(KERN_DEBUG "cx88 IR: " fmt , ##arg) + +/* ---------------------------------------------------------------------- */ + +static void cx88_ir_handle_key(struct cx88_IR *ir) +{ + struct cx88_core *core = ir->core; + u32 gpio, data, auxgpio; + + /* read gpio value */ + gpio = cx_read(ir->gpio_addr); + switch (core->boardnr) { + case CX88_BOARD_NPGTECH_REALTV_TOP10FM: + /* This board apparently uses a combination of 2 GPIO + to represent the keys. Additionally, the second GPIO + can be used for parity. + + Example: + + for key "5" + gpio = 0x758, auxgpio = 0xe5 or 0xf5 + for key "Power" + gpio = 0x758, auxgpio = 0xed or 0xfd + */ + + auxgpio = cx_read(MO_GP1_IO); + /* Take out the parity part */ + gpio=(gpio & 0x7fd) + (auxgpio & 0xef); + break; + case CX88_BOARD_WINFAST_DTV1000: + case CX88_BOARD_WINFAST_DTV1800H: + case CX88_BOARD_WINFAST_DTV1800H_XC4000: + case CX88_BOARD_WINFAST_DTV2000H_PLUS: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: + gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900); + auxgpio = gpio; + break; + default: + auxgpio = gpio; + } + if (ir->polling) { + if (ir->last_gpio == auxgpio) + return; + ir->last_gpio = auxgpio; + } + + /* extract data */ + data = ir_extract_bits(gpio, ir->mask_keycode); + ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n", + gpio, data, + ir->polling ? "poll" : "irq", + (gpio & ir->mask_keydown) ? " down" : "", + (gpio & ir->mask_keyup) ? " up" : ""); + + if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) { + u32 gpio_key = cx_read(MO_GP0_IO); + + data = (data << 4) | ((gpio_key & 0xf0) >> 4); + + rc_keydown(ir->dev, data, 0); + + } else if (ir->mask_keydown) { + /* bit set on keydown */ + if (gpio & ir->mask_keydown) + rc_keydown_notimeout(ir->dev, data, 0); + else + rc_keyup(ir->dev); + + } else if (ir->mask_keyup) { + /* bit cleared on keydown */ + if (0 == (gpio & ir->mask_keyup)) + rc_keydown_notimeout(ir->dev, data, 0); + else + rc_keyup(ir->dev); + + } else { + /* can't distinguish keydown/up :-/ */ + rc_keydown_notimeout(ir->dev, data, 0); + rc_keyup(ir->dev); + } +} + +static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer) +{ + unsigned long missed; + struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer); + + cx88_ir_handle_key(ir); + missed = hrtimer_forward_now(&ir->timer, + ktime_set(0, ir->polling * 1000000)); + if (missed > 1) + ir_dprintk("Missed ticks %ld\n", missed - 1); + + return HRTIMER_RESTART; +} + +static int __cx88_ir_start(void *priv) +{ + struct cx88_core *core = priv; + struct cx88_IR *ir; + + if (!core || !core->ir) + return -EINVAL; + + ir = core->ir; + + if (ir->polling) { + hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + ir->timer.function = cx88_ir_work; + hrtimer_start(&ir->timer, + ktime_set(0, ir->polling * 1000000), + HRTIMER_MODE_REL); + } + if (ir->sampling) { + core->pci_irqmask |= PCI_INT_IR_SMPINT; + cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */ + cx_write(MO_DDSCFG_IO, 0x5); /* enable */ + } + return 0; +} + +static void __cx88_ir_stop(void *priv) +{ + struct cx88_core *core = priv; + struct cx88_IR *ir; + + if (!core || !core->ir) + return; + + ir = core->ir; + if (ir->sampling) { + cx_write(MO_DDSCFG_IO, 0x0); + core->pci_irqmask &= ~PCI_INT_IR_SMPINT; + } + + if (ir->polling) + hrtimer_cancel(&ir->timer); +} + +int cx88_ir_start(struct cx88_core *core) +{ + if (core->ir->users) + return __cx88_ir_start(core); + + return 0; +} + +void cx88_ir_stop(struct cx88_core *core) +{ + if (core->ir->users) + __cx88_ir_stop(core); +} + +static int cx88_ir_open(struct rc_dev *rc) +{ + struct cx88_core *core = rc->priv; + + core->ir->users++; + return __cx88_ir_start(core); +} + +static void cx88_ir_close(struct rc_dev *rc) +{ + struct cx88_core *core = rc->priv; + + core->ir->users--; + if (!core->ir->users) + __cx88_ir_stop(core); +} + +/* ---------------------------------------------------------------------- */ + +int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) +{ + struct cx88_IR *ir; + struct rc_dev *dev; + char *ir_codes = NULL; + u64 rc_type = RC_TYPE_OTHER; + int err = -ENOMEM; + u32 hardware_mask = 0; /* For devices with a hardware mask, when + * used with a full-code IR table + */ + + ir = kzalloc(sizeof(*ir), GFP_KERNEL); + dev = rc_allocate_device(); + if (!ir || !dev) + goto err_out_free; + + ir->dev = dev; + + /* detect & configure */ + switch (core->boardnr) { + case CX88_BOARD_DNTV_LIVE_DVB_T: + case CX88_BOARD_KWORLD_DVB_T: + case CX88_BOARD_KWORLD_DVB_T_CX22702: + ir_codes = RC_MAP_DNTV_LIVE_DVB_T; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0x1f; + ir->mask_keyup = 0x60; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: + ir_codes = RC_MAP_CINERGY_1400; + ir->sampling = 0xeb04; /* address */ + break; + case CX88_BOARD_HAUPPAUGE: + case CX88_BOARD_HAUPPAUGE_DVB_T1: + case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: + case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: + case CX88_BOARD_HAUPPAUGE_HVR1100: + case CX88_BOARD_HAUPPAUGE_HVR3000: + case CX88_BOARD_HAUPPAUGE_HVR4000: + case CX88_BOARD_HAUPPAUGE_HVR4000LITE: + case CX88_BOARD_PCHDTV_HD3000: + case CX88_BOARD_PCHDTV_HD5500: + case CX88_BOARD_HAUPPAUGE_IRONLY: + ir_codes = RC_MAP_HAUPPAUGE; + ir->sampling = 1; + break; + case CX88_BOARD_WINFAST_DTV2000H: + case CX88_BOARD_WINFAST_DTV2000H_J: + case CX88_BOARD_WINFAST_DTV1800H: + case CX88_BOARD_WINFAST_DTV1800H_XC4000: + case CX88_BOARD_WINFAST_DTV2000H_PLUS: + ir_codes = RC_MAP_WINFAST; + ir->gpio_addr = MO_GP0_IO; + ir->mask_keycode = 0x8f8; + ir->mask_keyup = 0x100; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_WINFAST2000XP_EXPERT: + case CX88_BOARD_WINFAST_DTV1000: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: + case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: + ir_codes = RC_MAP_WINFAST; + ir->gpio_addr = MO_GP0_IO; + ir->mask_keycode = 0x8f8; + ir->mask_keyup = 0x100; + ir->polling = 1; /* ms */ + break; + case CX88_BOARD_IODATA_GVBCTV7E: + ir_codes = RC_MAP_IODATA_BCTV7E; + ir->gpio_addr = MO_GP0_IO; + ir->mask_keycode = 0xfd; + ir->mask_keydown = 0x02; + ir->polling = 5; /* ms */ + break; + case CX88_BOARD_PROLINK_PLAYTVPVR: + case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: + /* + * It seems that this hardware is paired with NEC extended + * address 0x866b. So, unfortunately, its usage with other + * IR's with different address won't work. Still, there are + * other IR's from the same manufacturer that works, like the + * 002-T mini RC, provided with newer PV hardware + */ + ir_codes = RC_MAP_PIXELVIEW_MK12; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keyup = 0x80; + ir->polling = 10; /* ms */ + hardware_mask = 0x3f; /* Hardware returns only 6 bits from command part */ + break; + case CX88_BOARD_PROLINK_PV_8000GT: + case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME: + ir_codes = RC_MAP_PIXELVIEW_NEW; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0x3f; + ir->mask_keyup = 0x80; + ir->polling = 1; /* ms */ + break; + case CX88_BOARD_KWORLD_LTV883: + ir_codes = RC_MAP_PIXELVIEW; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0x1f; + ir->mask_keyup = 0x60; + ir->polling = 1; /* ms */ + break; + case CX88_BOARD_ADSTECH_DVB_T_PCI: + ir_codes = RC_MAP_ADSTECH_DVB_T_PCI; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0xbf; + ir->mask_keyup = 0x40; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_MSI_TVANYWHERE_MASTER: + ir_codes = RC_MAP_MSI_TVANYWHERE; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0x1f; + ir->mask_keyup = 0x40; + ir->polling = 1; /* ms */ + break; + case CX88_BOARD_AVERTV_303: + case CX88_BOARD_AVERTV_STUDIO_303: + ir_codes = RC_MAP_AVERTV_303; + ir->gpio_addr = MO_GP2_IO; + ir->mask_keycode = 0xfb; + ir->mask_keydown = 0x02; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_OMICOM_SS4_PCI: + case CX88_BOARD_SATTRADE_ST4200: + case CX88_BOARD_TBS_8920: + case CX88_BOARD_TBS_8910: + case CX88_BOARD_PROF_7300: + case CX88_BOARD_PROF_7301: + case CX88_BOARD_PROF_6200: + ir_codes = RC_MAP_TBS_NEC; + ir->sampling = 0xff00; /* address */ + break; + case CX88_BOARD_TEVII_S464: + case CX88_BOARD_TEVII_S460: + case CX88_BOARD_TEVII_S420: + ir_codes = RC_MAP_TEVII_NEC; + ir->sampling = 0xff00; /* address */ + break; + case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: + ir_codes = RC_MAP_DNTV_LIVE_DVBT_PRO; + ir->sampling = 0xff00; /* address */ + break; + case CX88_BOARD_NORWOOD_MICRO: + ir_codes = RC_MAP_NORWOOD; + ir->gpio_addr = MO_GP1_IO; + ir->mask_keycode = 0x0e; + ir->mask_keyup = 0x80; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_NPGTECH_REALTV_TOP10FM: + ir_codes = RC_MAP_NPGTECH; + ir->gpio_addr = MO_GP0_IO; + ir->mask_keycode = 0xfa; + ir->polling = 50; /* ms */ + break; + case CX88_BOARD_PINNACLE_PCTV_HD_800i: + ir_codes = RC_MAP_PINNACLE_PCTV_HD; + ir->sampling = 1; + break; + case CX88_BOARD_POWERCOLOR_REAL_ANGEL: + ir_codes = RC_MAP_POWERCOLOR_REAL_ANGEL; + ir->gpio_addr = MO_GP2_IO; + ir->mask_keycode = 0x7e; + ir->polling = 100; /* ms */ + break; + case CX88_BOARD_TWINHAN_VP1027_DVBS: + ir_codes = RC_MAP_TWINHAN_VP1027_DVBS; + rc_type = RC_TYPE_NEC; + ir->sampling = 0xff00; /* address */ + break; + } + + if (!ir_codes) { + err = -ENODEV; + goto err_out_free; + } + + /* + * The usage of mask_keycode were very convenient, due to several + * reasons. Among others, the scancode tables were using the scancode + * as the index elements. So, the less bits it was used, the smaller + * the table were stored. After the input changes, the better is to use + * the full scancodes, since it allows replacing the IR remote by + * another one. Unfortunately, there are still some hardware, like + * Pixelview Ultra Pro, where only part of the scancode is sent via + * GPIO. So, there's no way to get the full scancode. Due to that, + * hardware_mask were introduced here: it represents those hardware + * that has such limits. + */ + if (hardware_mask && !ir->mask_keycode) + ir->mask_keycode = hardware_mask; + + /* init input device */ + snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name); + snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci)); + + dev->input_name = ir->name; + dev->input_phys = ir->phys; + dev->input_id.bustype = BUS_PCI; + dev->input_id.version = 1; + if (pci->subsystem_vendor) { + dev->input_id.vendor = pci->subsystem_vendor; + dev->input_id.product = pci->subsystem_device; + } else { + dev->input_id.vendor = pci->vendor; + dev->input_id.product = pci->device; + } + dev->dev.parent = &pci->dev; + dev->map_name = ir_codes; + dev->driver_name = MODULE_NAME; + dev->priv = core; + dev->open = cx88_ir_open; + dev->close = cx88_ir_close; + dev->scanmask = hardware_mask; + + if (ir->sampling) { + dev->driver_type = RC_DRIVER_IR_RAW; + dev->timeout = 10 * 1000 * 1000; /* 10 ms */ + } else { + dev->driver_type = RC_DRIVER_SCANCODE; + dev->allowed_protos = rc_type; + } + + ir->core = core; + core->ir = ir; + + /* all done */ + err = rc_register_device(dev); + if (err) + goto err_out_free; + + return 0; + +err_out_free: + rc_free_device(dev); + core->ir = NULL; + kfree(ir); + return err; +} + +int cx88_ir_fini(struct cx88_core *core) +{ + struct cx88_IR *ir = core->ir; + + /* skip detach on non attached boards */ + if (NULL == ir) + return 0; + + cx88_ir_stop(core); + rc_unregister_device(ir->dev); + kfree(ir); + + /* done */ + core->ir = NULL; + return 0; +} + +/* ---------------------------------------------------------------------- */ + +void cx88_ir_irq(struct cx88_core *core) +{ + struct cx88_IR *ir = core->ir; + u32 samples; + unsigned todo, bits; + struct ir_raw_event ev; + + if (!ir || !ir->sampling) + return; + + /* + * Samples are stored in a 32 bit register, oldest sample in + * the msb. A set bit represents space and an unset bit + * represents a pulse. + */ + samples = cx_read(MO_SAMPLE_IO); + + if (samples == 0xff && ir->dev->idle) + return; + + init_ir_raw_event(&ev); + for (todo = 32; todo > 0; todo -= bits) { + ev.pulse = samples & 0x80000000 ? false : true; + bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples)); + ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate; + ir_raw_event_store_with_filter(ir->dev, &ev); + samples <<= bits; + } + ir_raw_event_handle(ir->dev); +} + +static int get_key_pvr2000(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) +{ + int flags, code; + + /* poll IR chip */ + flags = i2c_smbus_read_byte_data(ir->c, 0x10); + if (flags < 0) { + dprintk("read error\n"); + return 0; + } + /* key pressed ? */ + if (0 == (flags & 0x80)) + return 0; + + /* read actual key code */ + code = i2c_smbus_read_byte_data(ir->c, 0x00); + if (code < 0) { + dprintk("read error\n"); + return 0; + } + + dprintk("IR Key/Flags: (0x%02x/0x%02x)\n", + code & 0xff, flags & 0xff); + + *ir_key = code & 0xff; + *ir_raw = code; + return 1; +} + +void cx88_i2c_init_ir(struct cx88_core *core) +{ + struct i2c_board_info info; + const unsigned short default_addr_list[] = { + 0x18, 0x6b, 0x71, + I2C_CLIENT_END + }; + const unsigned short pvr2000_addr_list[] = { + 0x18, 0x1a, + I2C_CLIENT_END + }; + const unsigned short *addr_list = default_addr_list; + const unsigned short *addrp; + /* Instantiate the IR receiver device, if present */ + if (0 != core->i2c_rc) + return; + + memset(&info, 0, sizeof(struct i2c_board_info)); + strlcpy(info.type, "ir_video", I2C_NAME_SIZE); + + switch (core->boardnr) { + case CX88_BOARD_LEADTEK_PVR2000: + addr_list = pvr2000_addr_list; + core->init_data.name = "cx88 Leadtek PVR 2000 remote"; + core->init_data.type = RC_TYPE_UNKNOWN; + core->init_data.get_key = get_key_pvr2000; + core->init_data.ir_codes = RC_MAP_EMPTY; + break; + } + + /* + * We can't call i2c_new_probed_device() because it uses + * quick writes for probing and at least some RC receiver + * devices only reply to reads. + * Also, Hauppauge XVR needs to be specified, as address 0x71 + * conflicts with another remote type used with saa7134 + */ + for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) { + info.platform_data = NULL; + memset(&core->init_data, 0, sizeof(core->init_data)); + + if (*addrp == 0x71) { + /* Hauppauge XVR */ + core->init_data.name = "cx88 Hauppauge XVR remote"; + core->init_data.ir_codes = RC_MAP_HAUPPAUGE; + core->init_data.type = RC_TYPE_RC5; + core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; + + info.platform_data = &core->init_data; + } + if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0, + I2C_SMBUS_READ, 0, + I2C_SMBUS_QUICK, NULL) >= 0) { + info.addr = *addrp; + i2c_new_device(&core->i2c_adap, &info); + break; + } + } +} + +/* ---------------------------------------------------------------------- */ + +MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); +MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); +MODULE_LICENSE("GPL"); |
