/* * $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 #include #include #include #include #include #include #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: */