| /* |
| * |
| * 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) |
| |
| /* ---------------------------------------------------------------------- */ |
| |
| 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_TV2000_XP_GLOBAL: |
| 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_NEW; |
| ir->sampling = 1; |
| break; |
| case CX88_BOARD_WINFAST_DTV2000H: |
| case CX88_BOARD_WINFAST_DTV2000H_J: |
| case CX88_BOARD_WINFAST_DTV1800H: |
| 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: |
| 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_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); |
| } |
| |
| void cx88_i2c_init_ir(struct cx88_core *core) |
| { |
| struct i2c_board_info info; |
| const unsigned short addr_list[] = { |
| 0x18, 0x6b, 0x71, |
| I2C_CLIENT_END |
| }; |
| 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); |
| |
| /* |
| * 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_NEW; |
| 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"); |