--- /dev/null
+/*
+ * $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:
+ */
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