diff options
Diffstat (limited to 'drivers/media/video/cx88/cx88-input.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-input.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/drivers/media/video/cx88/cx88-input.c b/drivers/media/video/cx88/cx88-input.c new file mode 100644 index 000000000000..af6ad8cdbdb7 --- /dev/null +++ b/drivers/media/video/cx88/cx88-input.c @@ -0,0 +1,396 @@ +/* + * $Id: cx88-input.c,v 1.9 2005/03/04 09:12:23 kraxel Exp $ + * + * 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 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/delay.h> +#include <linux/input.h> +#include <linux/pci.h> +#include <linux/module.h> +#include <linux/moduleparam.h> + +#include <media/ir-common.h> + +#include "cx88.h" + +/* ---------------------------------------------------------------------- */ + +/* DigitalNow DNTV Live DVB-T Remote */ +static IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE] = { + [ 0x00 ] = KEY_ESC, // 'go up a level?' + [ 0x01 ] = KEY_KP1, // '1' + [ 0x02 ] = KEY_KP2, // '2' + [ 0x03 ] = KEY_KP3, // '3' + [ 0x04 ] = KEY_KP4, // '4' + [ 0x05 ] = KEY_KP5, // '5' + [ 0x06 ] = KEY_KP6, // '6' + [ 0x07 ] = KEY_KP7, // '7' + [ 0x08 ] = KEY_KP8, // '8' + [ 0x09 ] = KEY_KP9, // '9' + [ 0x0a ] = KEY_KP0, // '0' + [ 0x0b ] = KEY_TUNER, // 'tv/fm' + [ 0x0c ] = KEY_SEARCH, // 'scan' + [ 0x0d ] = KEY_STOP, // 'stop' + [ 0x0e ] = KEY_PAUSE, // 'pause' + [ 0x0f ] = KEY_LIST, // 'source' + + [ 0x10 ] = KEY_MUTE, // 'mute' + [ 0x11 ] = KEY_REWIND, // 'backward <<' + [ 0x12 ] = KEY_POWER, // 'power' + [ 0x13 ] = KEY_S, // 'snap' + [ 0x14 ] = KEY_AUDIO, // 'stereo' + [ 0x15 ] = KEY_CLEAR, // 'reset' + [ 0x16 ] = KEY_PLAY, // 'play' + [ 0x17 ] = KEY_ENTER, // 'enter' + [ 0x18 ] = KEY_ZOOM, // 'full screen' + [ 0x19 ] = KEY_FASTFORWARD, // 'forward >>' + [ 0x1a ] = KEY_CHANNELUP, // 'channel +' + [ 0x1b ] = KEY_VOLUMEUP, // 'volume +' + [ 0x1c ] = KEY_INFO, // 'preview' + [ 0x1d ] = KEY_RECORD, // 'record' + [ 0x1e ] = KEY_CHANNELDOWN, // 'channel -' + [ 0x1f ] = KEY_VOLUMEDOWN, // 'volume -' +}; + +/* ---------------------------------------------------------------------- */ + +/* IO-DATA BCTV7E Remote */ +static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = { + [ 0x40 ] = KEY_TV, // TV + [ 0x20 ] = KEY_RADIO, // FM + [ 0x60 ] = KEY_EPG, // EPG + [ 0x00 ] = KEY_POWER, // power + + [ 0x50 ] = KEY_KP1, // 1 + [ 0x30 ] = KEY_KP2, // 2 + [ 0x70 ] = KEY_KP3, // 3 + [ 0x10 ] = KEY_L, // Live + + [ 0x48 ] = KEY_KP4, // 4 + [ 0x28 ] = KEY_KP5, // 5 + [ 0x68 ] = KEY_KP6, // 6 + [ 0x08 ] = KEY_T, // Time Shift + + [ 0x58 ] = KEY_KP7, // 7 + [ 0x38 ] = KEY_KP8, // 8 + [ 0x78 ] = KEY_KP9, // 9 + [ 0x18 ] = KEY_PLAYPAUSE, // Play + + [ 0x44 ] = KEY_KP0, // 10 + [ 0x24 ] = KEY_ENTER, // 11 + [ 0x64 ] = KEY_ESC, // 12 + [ 0x04 ] = KEY_M, // Multi + + [ 0x54 ] = KEY_VIDEO, // VIDEO + [ 0x34 ] = KEY_CHANNELUP, // channel + + [ 0x74 ] = KEY_VOLUMEUP, // volume + + [ 0x14 ] = KEY_MUTE, // Mute + + [ 0x4c ] = KEY_S, // SVIDEO + [ 0x2c ] = KEY_CHANNELDOWN, // channel - + [ 0x6c ] = KEY_VOLUMEDOWN, // volume - + [ 0x0c ] = KEY_ZOOM, // Zoom + + [ 0x5c ] = KEY_PAUSE, // pause + [ 0x3c ] = KEY_C, // || (red) + [ 0x7c ] = KEY_RECORD, // recording + [ 0x1c ] = KEY_STOP, // stop + + [ 0x41 ] = KEY_REWIND, // backward << + [ 0x21 ] = KEY_PLAY, // play + [ 0x61 ] = KEY_FASTFORWARD, // forward >> + [ 0x01 ] = KEY_NEXT, // skip >| +}; + +/* ---------------------------------------------------------------------- */ + +struct cx88_IR { + struct cx88_core *core; + struct input_dev input; + struct ir_input_state ir; + char name[32]; + char phys[32]; + + /* sample from gpio pin 16 */ + int sampling; + u32 samples[16]; + int scount; + unsigned long release; + + /* poll external decoder */ + int polling; + struct work_struct work; + struct timer_list timer; + u32 gpio_addr; + u32 last_gpio; + u32 mask_keycode; + u32 mask_keydown; + u32 mask_keyup; +}; + +static int ir_debug = 0; +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; + + /* read gpio value */ + gpio = cx_read(ir->gpio_addr); + if (ir->polling) { + if (ir->last_gpio == gpio) + return; + ir->last_gpio = gpio; + } + + /* 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->mask_keydown) { + /* bit set on keydown */ + if (gpio & ir->mask_keydown) { + ir_input_keydown(&ir->input,&ir->ir,data,data); + } else { + ir_input_nokey(&ir->input,&ir->ir); + } + + } else if (ir->mask_keyup) { + /* bit cleared on keydown */ + if (0 == (gpio & ir->mask_keyup)) { + ir_input_keydown(&ir->input,&ir->ir,data,data); + } else { + ir_input_nokey(&ir->input,&ir->ir); + } + + } else { + /* can't distinguish keydown/up :-/ */ + ir_input_keydown(&ir->input,&ir->ir,data,data); + ir_input_nokey(&ir->input,&ir->ir); + } +} + +static void ir_timer(unsigned long data) +{ + struct cx88_IR *ir = (struct cx88_IR*)data; + + schedule_work(&ir->work); +} + +static void cx88_ir_work(void *data) +{ + struct cx88_IR *ir = data; + unsigned long timeout; + + cx88_ir_handle_key(ir); + timeout = jiffies + (ir->polling * HZ / 1000); + mod_timer(&ir->timer, timeout); +} + +/* ---------------------------------------------------------------------- */ + +int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) +{ + struct cx88_IR *ir; + IR_KEYTAB_TYPE *ir_codes = NULL; + int ir_type = IR_TYPE_OTHER; + + ir = kmalloc(sizeof(*ir),GFP_KERNEL); + if (NULL == ir) + return -ENOMEM; + memset(ir,0,sizeof(*ir)); + + /* detect & configure */ + switch (core->board) { + case CX88_BOARD_DNTV_LIVE_DVB_T: + ir_codes = ir_codes_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_HAUPPAUGE: + case CX88_BOARD_HAUPPAUGE_DVB_T1: + ir_codes = ir_codes_hauppauge_new; + ir_type = IR_TYPE_RC5; + ir->sampling = 1; + break; + case CX88_BOARD_WINFAST2000XP_EXPERT: + ir_codes = ir_codes_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 = ir_codes_iodata_bctv7e; + ir->gpio_addr = MO_GP0_IO; + ir->mask_keycode = 0xfd; + ir->mask_keydown = 0x02; + ir->polling = 5; // ms + break; + } + if (NULL == ir_codes) { + kfree(ir); + return -ENODEV; + } + + /* init input device */ + snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", + cx88_boards[core->board].name); + snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", + pci_name(pci)); + + ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes); + ir->input.name = ir->name; + ir->input.phys = ir->phys; + ir->input.id.bustype = BUS_PCI; + ir->input.id.version = 1; + if (pci->subsystem_vendor) { + ir->input.id.vendor = pci->subsystem_vendor; + ir->input.id.product = pci->subsystem_device; + } else { + ir->input.id.vendor = pci->vendor; + ir->input.id.product = pci->device; + } + + /* record handles to ourself */ + ir->core = core; + core->ir = ir; + + if (ir->polling) { + INIT_WORK(&ir->work, cx88_ir_work, ir); + init_timer(&ir->timer); + ir->timer.function = ir_timer; + ir->timer.data = (unsigned long)ir; + schedule_work(&ir->work); + } + if (ir->sampling) { + core->pci_irqmask |= (1<<18); // IR_SMP_INT + cx_write(MO_DDS_IO, 0xa80a80); // 4 kHz sample rate + cx_write(MO_DDSCFG_IO, 0x5); // enable + } + + /* all done */ + input_register_device(&ir->input); + printk("%s: registered IR remote control\n", core->name); + + return 0; +} + +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; + + if (ir->polling) { + del_timer(&ir->timer); + flush_scheduled_work(); + } + + input_unregister_device(&ir->input); + kfree(ir); + + /* done */ + core->ir = NULL; + return 0; +} + +/* ---------------------------------------------------------------------- */ + +void cx88_ir_irq(struct cx88_core *core) +{ + struct cx88_IR *ir = core->ir; + u32 samples,rc5; + int i; + + if (NULL == ir) + return; + if (!ir->sampling) + return; + + samples = cx_read(MO_SAMPLE_IO); + if (0 != samples && 0xffffffff != samples) { + /* record sample data */ + if (ir->scount < ARRAY_SIZE(ir->samples)) + ir->samples[ir->scount++] = samples; + return; + } + if (!ir->scount) { + /* nothing to sample */ + if (ir->ir.keypressed && time_after(jiffies,ir->release)) + ir_input_nokey(&ir->input,&ir->ir); + return; + } + + /* have a complete sample */ + if (ir->scount < ARRAY_SIZE(ir->samples)) + ir->samples[ir->scount++] = samples; + for (i = 0; i < ir->scount; i++) + ir->samples[i] = ~ir->samples[i]; + if (ir_debug) + ir_dump_samples(ir->samples,ir->scount); + + /* decode it */ + switch (core->board) { + case CX88_BOARD_HAUPPAUGE: + case CX88_BOARD_HAUPPAUGE_DVB_T1: + rc5 = ir_decode_biphase(ir->samples,ir->scount,5,7); + ir_dprintk("biphase decoded: %x\n",rc5); + if ((rc5 & 0xfffff000) != 0x3000) + break; + ir_input_keydown(&ir->input, &ir->ir, rc5 & 0x3f, rc5); + ir->release = jiffies + msecs_to_jiffies(120); + break; + } + + ir->scount = 0; + return; +} + +/* ---------------------------------------------------------------------- */ + +MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); +MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); +MODULE_LICENSE("GPL"); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |