saa7134-input.c

trident tm5600的linux驱动

		polling      = 50; // ms
		/* Set GPIO pin2 to high to enable the IR controller */
		saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
		saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
		break;
	case SAA7134_BOARD_AVERMEDIA_M135A:
		ir_codes     = ir_codes_avermedia_m135a;
		mask_keydown = 0x0040000;
		mask_keycode = 0x00013f;
		nec_gpio     = 1;
		break;
	case SAA7134_BOARD_AVERMEDIA_777:
	case SAA7134_BOARD_AVERMEDIA_A16AR:
		ir_codes     = ir_codes_avermedia;
		mask_keycode = 0x02F200;
		mask_keydown = 0x000400;
		polling      = 50; // ms
		/* Without this we won't receive key up events */
		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
		break;
	case SAA7134_BOARD_AVERMEDIA_A16D:
		ir_codes     = ir_codes_avermedia_a16d;
		mask_keycode = 0x02F200;
		mask_keydown = 0x000400;
		polling      = 50; /* ms */
		/* Without this we won't receive key up events */
		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
		break;
	case SAA7134_BOARD_KWORLD_TERMINATOR:
		ir_codes     = ir_codes_pixelview;
		mask_keycode = 0x00001f;
		mask_keyup   = 0x000060;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_MANLI_MTV001:
	case SAA7134_BOARD_MANLI_MTV002:
		ir_codes     = ir_codes_manli;
		mask_keycode = 0x001f00;
		mask_keyup   = 0x004000;
		polling      = 50; /* ms */
		break;
	case SAA7134_BOARD_BEHOLD_409FM:
	case SAA7134_BOARD_BEHOLD_401:
	case SAA7134_BOARD_BEHOLD_403:
	case SAA7134_BOARD_BEHOLD_403FM:
	case SAA7134_BOARD_BEHOLD_405:
	case SAA7134_BOARD_BEHOLD_405FM:
	case SAA7134_BOARD_BEHOLD_407:
	case SAA7134_BOARD_BEHOLD_407FM:
	case SAA7134_BOARD_BEHOLD_409:
	case SAA7134_BOARD_BEHOLD_505FM:
	case SAA7134_BOARD_BEHOLD_507_9FM:
		ir_codes     = ir_codes_manli;
		mask_keycode = 0x003f00;
		mask_keyup   = 0x004000;
		polling      = 50; /* ms */
		break;
	case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
		ir_codes     = ir_codes_behold_columbus;
		mask_keycode = 0x003f00;
		mask_keyup   = 0x004000;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
		ir_codes     = ir_codes_pctv_sedna;
		mask_keycode = 0x001f00;
		mask_keyup   = 0x004000;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_GOTVIEW_7135:
		ir_codes     = ir_codes_gotview7135;
		mask_keycode = 0x0003CC;
		mask_keydown = 0x000010;
		polling	     = 5; /* ms */
		saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
		break;
	case SAA7134_BOARD_VIDEOMATE_TV_PVR:
	case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
	case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
		ir_codes     = ir_codes_videomate_tv_pvr;
		mask_keycode = 0x00003F;
		mask_keyup   = 0x400000;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_PROTEUS_2309:
		ir_codes     = ir_codes_proteus_2309;
		mask_keycode = 0x00007F;
		mask_keyup   = 0x000080;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_VIDEOMATE_DVBT_300:
	case SAA7134_BOARD_VIDEOMATE_DVBT_200:
		ir_codes     = ir_codes_videomate_tv_pvr;
		mask_keycode = 0x003F00;
		mask_keyup   = 0x040000;
		break;
	case SAA7134_BOARD_FLYDVBS_LR300:
	case SAA7134_BOARD_FLYDVBT_LR301:
	case SAA7134_BOARD_FLYDVBTDUO:
		ir_codes     = ir_codes_flydvb;
		mask_keycode = 0x0001F00;
		mask_keydown = 0x0040000;
		break;
	case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
	case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
       case SAA7134_BOARD_ASUSTeK_P7131_ANALOG:
		ir_codes     = ir_codes_asus_pc39;
		mask_keydown = 0x0040000;
		rc5_gpio = 1;
		break;
	case SAA7134_BOARD_ENCORE_ENLTV:
	case SAA7134_BOARD_ENCORE_ENLTV_FM:
		ir_codes     = ir_codes_encore_enltv;
		mask_keycode = 0x00007f;
		mask_keyup   = 0x040000;
		polling      = 50; // ms
		break;
	case SAA7134_BOARD_ENCORE_ENLTV_FM53:
		ir_codes     = ir_codes_encore_enltv_fm53;
		mask_keydown = 0x0040000;
		mask_keycode = 0x00007f;
		nec_gpio = 1;
		break;
	case SAA7134_BOARD_10MOONSTVMASTER3:
		ir_codes     = ir_codes_encore_enltv;
		mask_keycode = 0x5f80000;
		mask_keyup   = 0x8000000;
		polling      = 50; //ms
		break;
	case SAA7134_BOARD_GENIUS_TVGO_A11MCE:
		ir_codes     = ir_codes_genius_tvgo_a11mce;
		mask_keycode = 0xff;
		mask_keydown = 0xf00000;
		polling = 50; /* ms */
		break;
	case SAA7134_BOARD_REAL_ANGEL_220:
		ir_codes     = ir_codes_real_audio_220_32_keys;
		mask_keycode = 0x3f00;
		mask_keyup   = 0x4000;
		polling = 50; /* ms */
		break;
	}
	if (NULL == ir_codes) {
		printk("%s: Oops: IR config error [card=%d]\n",
		       dev->name, dev->board);
		return -ENODEV;
	}

	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!ir || !input_dev) {
		err = -ENOMEM;
		goto err_out_free;
	}

	ir->dev = input_dev;

	/* init hardware-specific stuff */
	ir->mask_keycode = mask_keycode;
	ir->mask_keydown = mask_keydown;
	ir->mask_keyup   = mask_keyup;
	ir->polling      = polling;
	ir->rc5_gpio	 = rc5_gpio;
	ir->nec_gpio	 = nec_gpio;

	/* init input device */
	snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
		 saa7134_boards[dev->board].name);
	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
		 pci_name(dev->pci));

	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	input_dev->name = ir->name;
	input_dev->phys = ir->phys;
	input_dev->id.bustype = BUS_PCI;
	input_dev->id.version = 1;
	if (dev->pci->subsystem_vendor) {
		input_dev->id.vendor  = dev->pci->subsystem_vendor;
		input_dev->id.product = dev->pci->subsystem_device;
	} else {
		input_dev->id.vendor  = dev->pci->vendor;
		input_dev->id.product = dev->pci->device;
	}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
	input_dev->dev.parent = &dev->pci->dev;
#else
	input_dev->cdev.dev = &dev->pci->dev;
#endif

	dev->remote = ir;
	saa7134_ir_start(dev, ir);

	err = input_register_device(ir->dev);
	if (err)
		goto err_out_stop;

	/* the remote isn't as bouncy as a keyboard */
	ir->dev->rep[REP_DELAY] = repeat_delay;
	ir->dev->rep[REP_PERIOD] = repeat_period;

	return 0;

 err_out_stop:
	saa7134_ir_stop(dev);
	dev->remote = NULL;
 err_out_free:
	input_free_device(input_dev);
	kfree(ir);
	return err;
}

void saa7134_input_fini(struct saa7134_dev *dev)
{
	if (NULL == dev->remote)
		return;

	saa7134_ir_stop(dev);
	input_unregister_device(dev->remote->dev);
	kfree(dev->remote);
	dev->remote = NULL;
}

void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
{
	if (disable_ir) {
		dprintk("Found supported i2c remote, but IR has been disabled\n");
		ir->get_key=NULL;
		return;
	}

	switch (dev->board) {
	case SAA7134_BOARD_PINNACLE_PCTV_110i:
	case SAA7134_BOARD_PINNACLE_PCTV_310i:
		snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
		if (pinnacle_remote == 0) {
			ir->get_key   = get_key_pinnacle_color;
			ir->ir_codes = ir_codes_pinnacle_color;
		} else {
			ir->get_key   = get_key_pinnacle_grey;
			ir->ir_codes = ir_codes_pinnacle_grey;
		}
		break;
	case SAA7134_BOARD_UPMOST_PURPLE_TV:
		snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
		ir->get_key   = get_key_purpletv;
		ir->ir_codes  = ir_codes_purpletv;
		break;
	case SAA7134_BOARD_MSI_TVATANYWHERE_PLUS:
		snprintf(ir->c.name, sizeof(ir->c.name), "MSI TV@nywhere Plus");
		ir->get_key  = get_key_msi_tvanywhere_plus;
		ir->ir_codes = ir_codes_msi_tvanywhere_plus;
		break;
	case SAA7134_BOARD_HAUPPAUGE_HVR1110:
		snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
		ir->get_key   = get_key_hvr1110;
		ir->ir_codes  = ir_codes_hauppauge_new;
		break;
	case SAA7134_BOARD_BEHOLD_607_9FM:
	case SAA7134_BOARD_BEHOLD_M6:
	case SAA7134_BOARD_BEHOLD_M63:
	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
	case SAA7134_BOARD_BEHOLD_H6:
		snprintf(ir->c.name, sizeof(ir->c.name), "BeholdTV");
		ir->get_key   = get_key_beholdm6xx;
		ir->ir_codes  = ir_codes_behold;
		break;
	default:
		dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
		break;
	}

}

static int saa7134_rc5_irq(struct saa7134_dev *dev)
{
	struct card_ir *ir = dev->remote;
	struct timeval tv;
	u32 gap;
	unsigned long current_jiffies, timeout;

	/* get time of bit */
	current_jiffies = jiffies;
	do_gettimeofday(&tv);

	/* avoid overflow with gap >1s */
	if (tv.tv_sec - ir->base_time.tv_sec > 1) {
		gap = 200000;
	} else {
		gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
		    tv.tv_usec - ir->base_time.tv_usec;
	}

	/* active code => add bit */
	if (ir->active) {
		/* only if in the code (otherwise spurious IRQ or timer
		   late) */
		if (ir->last_bit < 28) {
			ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
			    ir_rc5_remote_gap;
			ir->code |= 1 << ir->last_bit;
		}
		/* starting new code */
	} else {
		ir->active = 1;
		ir->code = 0;
		ir->base_time = tv;
		ir->last_bit = 0;

		timeout = current_jiffies + (500 + 30 * HZ) / 1000;
		mod_timer(&ir->timer_end, timeout);
	}

	return 1;
}


/* On NEC protocol, One has 2.25 ms, and zero has 1.125 ms
   The first pulse (start) has 9 + 4.5 ms
 */

static void saa7134_nec_timer(unsigned long data)
{
	struct saa7134_dev *dev = (struct saa7134_dev *) data;
	struct card_ir *ir = dev->remote;

	dprintk("Cancel key repeat\n");

	ir_input_nokey(ir->dev, &ir->ir);
}

static void nec_task(unsigned long data)
{
	struct saa7134_dev *dev = (struct saa7134_dev *) data;
	struct card_ir *ir;
	struct timeval tv;
	int count, pulse, oldpulse, gap;
	u32 ircode = 0, not_code = 0;
	int ngap = 0;

	if (!data) {
		printk(KERN_ERR "saa713x/ir: Can't recover dev struct\n");
		/* GPIO will be kept disabled */
		return;
	}

	ir = dev->remote;

	/* rising SAA7134_GPIO_GPRESCAN reads the status */
	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);

	oldpulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & ir->mask_keydown;
	pulse = oldpulse;

	do_gettimeofday(&tv);
	ir->base_time = tv;

	/* Decode NEC pulsecode. This code can take up to 76.5 ms to run.
	   Unfortunately, using IRQ to decode pulse didn't work, since it uses
	   a pulse train of 38KHz. This means one pulse on each 52 us
	 */
	do {
		/* Wait until the end of pulse/space or 5 ms */
		for (count = 0; count < 500; count++)  {
			udelay(10);
			/* rising SAA7134_GPIO_GPRESCAN reads the status */
			saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
			saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
			pulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)
				& ir->mask_keydown;
			if (pulse != oldpulse)
				break;
		}

		do_gettimeofday(&tv);
		gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
				tv.tv_usec - ir->base_time.tv_usec;

		if (!pulse) {
#if 0
			if (!ngap && gap < 4000)
				break;
#endif
			/* Bit 0 has 560 us, while bit 1 has 1120 us.
			   Do something only if bit == 1
			 */
			if (ngap && (gap > 560 + 280)) {
				unsigned int shift = ngap - 1;

				/* Address first, then command */
				if (shift < 8) {
					shift += 8;
					ircode |= 1 << shift;
				} else if (shift < 16) {
					not_code |= 1 << shift;
				} else if (shift < 24) {
					shift -= 16;
					ircode |= 1 << shift;
				} else {
					shift -= 24;
					not_code |= 1 << shift;
				}
			}
			ngap++;
		}


		ir->base_time = tv;

		/* TIMEOUT - Long pulse */
		if (gap >= 5000)
			break;
		oldpulse = pulse;
	} while (ngap < 32);

	if (ngap == 32) {
		/* FIXME: should check if not_code == ~ircode */
		ir->code = ir_extract_bits(ircode, ir->mask_keycode);

		dprintk("scancode = 0x%02x (code = 0x%02x, notcode= 0x%02x)\n",
			 ir->code, ircode, not_code);

		ir_input_keydown(ir->dev, &ir->ir, ir->code, ir->code);
	} else
		dprintk("Repeat last key\n");

	/* Keep repeating the last key */
	mod_timer(&ir->timer_keyup, jiffies + msecs_to_jiffies(150));

	saa_setl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
}

static int saa7134_nec_irq(struct saa7134_dev *dev)
{
	struct card_ir *ir = dev->remote;

	saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
	tasklet_schedule(&ir->tlet);

	return 1;
}