bttv-driver.c

V4l driver for DVB HD

		.flags    = FORMAT_FLAGS_RAW,
	}
};
static const unsigned int BTTV_FORMATS = ARRAY_SIZE(bttv_formats);

/* ----------------------------------------------------------------------- */

#define V4L2_CID_PRIVATE_CHROMA_AGC  (V4L2_CID_PRIVATE_BASE + 0)
#define V4L2_CID_PRIVATE_COMBFILTER  (V4L2_CID_PRIVATE_BASE + 1)
#define V4L2_CID_PRIVATE_AUTOMUTE    (V4L2_CID_PRIVATE_BASE + 2)
#define V4L2_CID_PRIVATE_LUMAFILTER  (V4L2_CID_PRIVATE_BASE + 3)
#define V4L2_CID_PRIVATE_AGC_CRUSH   (V4L2_CID_PRIVATE_BASE + 4)
#define V4L2_CID_PRIVATE_VCR_HACK    (V4L2_CID_PRIVATE_BASE + 5)
#define V4L2_CID_PRIVATE_WHITECRUSH_UPPER   (V4L2_CID_PRIVATE_BASE + 6)
#define V4L2_CID_PRIVATE_WHITECRUSH_LOWER   (V4L2_CID_PRIVATE_BASE + 7)
#define V4L2_CID_PRIVATE_UV_RATIO    (V4L2_CID_PRIVATE_BASE + 8)
#define V4L2_CID_PRIVATE_FULL_LUMA_RANGE    (V4L2_CID_PRIVATE_BASE + 9)
#define V4L2_CID_PRIVATE_CORING      (V4L2_CID_PRIVATE_BASE + 10)
#define V4L2_CID_PRIVATE_LASTP1      (V4L2_CID_PRIVATE_BASE + 11)

static const struct v4l2_queryctrl no_ctl = {
	.name  = "42",
	.flags = V4L2_CTRL_FLAG_DISABLED,
};
static const struct v4l2_queryctrl bttv_ctls[] = {
	/* --- video --- */
	{
		.id            = V4L2_CID_BRIGHTNESS,
		.name          = "Brightness",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 256,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_CONTRAST,
		.name          = "Contrast",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 128,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_SATURATION,
		.name          = "Saturation",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 128,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_HUE,
		.name          = "Hue",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 256,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},
	/* --- audio --- */
	{
		.id            = V4L2_CID_AUDIO_MUTE,
		.name          = "Mute",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 65535,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_AUDIO_BALANCE,
		.name          = "Balance",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_AUDIO_BASS,
		.name          = "Bass",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_AUDIO_TREBLE,
		.name          = "Treble",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},
	/* --- private --- */
	{
		.id            = V4L2_CID_PRIVATE_CHROMA_AGC,
		.name          = "chroma agc",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_COMBFILTER,
		.name          = "combfilter",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_AUTOMUTE,
		.name          = "automute",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_LUMAFILTER,
		.name          = "luma decimation filter",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_AGC_CRUSH,
		.name          = "agc crush",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_VCR_HACK,
		.name          = "vcr hack",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_WHITECRUSH_UPPER,
		.name          = "whitecrush upper",
		.minimum       = 0,
		.maximum       = 255,
		.step          = 1,
		.default_value = 0xCF,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_PRIVATE_WHITECRUSH_LOWER,
		.name          = "whitecrush lower",
		.minimum       = 0,
		.maximum       = 255,
		.step          = 1,
		.default_value = 0x7F,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_PRIVATE_UV_RATIO,
		.name          = "uv ratio",
		.minimum       = 0,
		.maximum       = 100,
		.step          = 1,
		.default_value = 50,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_PRIVATE_FULL_LUMA_RANGE,
		.name          = "full luma range",
		.minimum       = 0,
		.maximum       = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_PRIVATE_CORING,
		.name          = "coring",
		.minimum       = 0,
		.maximum       = 3,
		.step          = 1,
		.default_value = 0,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}



};
static const int BTTV_CTLS = ARRAY_SIZE(bttv_ctls);

/* ----------------------------------------------------------------------- */
/* resource management                                                     */

static
int check_alloc_btres(struct bttv *btv, struct bttv_fh *fh, int bit)
{
	if (fh->resources & bit)
		/* have it already allocated */
		return 1;

	/* is it free? */
	mutex_lock(&btv->reslock);
	if (btv->resources & bit) {
		/* no, someone else uses it */
		mutex_unlock(&btv->reslock);
		return 0;
	}
	/* it's free, grab it */
	fh->resources  |= bit;
	btv->resources |= bit;
	mutex_unlock(&btv->reslock);
	return 1;
}

static
int check_btres(struct bttv_fh *fh, int bit)
{
	return (fh->resources & bit);
}

static
int locked_btres(struct bttv *btv, int bit)
{
	return (btv->resources & bit);
}

static
void free_btres(struct bttv *btv, struct bttv_fh *fh, int bits)
{
#if 1 /* DEBUG */
	if ((fh->resources & bits) != bits) {
		/* trying to free ressources not allocated by us ... */
		printk("bttv: BUG! (btres)\n");
	}
#endif
	mutex_lock(&btv->reslock);
	fh->resources  &= ~bits;
	btv->resources &= ~bits;
	mutex_unlock(&btv->reslock);
}

/* ----------------------------------------------------------------------- */
/* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC          */

/* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
   PLL_X = Reference pre-divider (0=1, 1=2)
   PLL_C = Post divider (0=6, 1=4)
   PLL_I = Integer input
   PLL_F = Fractional input

   F_input = 28.636363 MHz:
   PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
*/

static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
{
	unsigned char fl, fh, fi;

	/* prevent overflows */
	fin/=4;
	fout/=4;

	fout*=12;
	fi=fout/fin;

	fout=(fout%fin)*256;
	fh=fout/fin;

	fout=(fout%fin)*256;
	fl=fout/fin;

	btwrite(fl, BT848_PLL_F_LO);
	btwrite(fh, BT848_PLL_F_HI);
	btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
}

static void set_pll(struct bttv *btv)
{
	int i;

	if (!btv->pll.pll_crystal)
		return;

	if (btv->pll.pll_ofreq == btv->pll.pll_current) {
		dprintk("bttv%d: PLL: no change required\n",btv->c.nr);
		return;
	}

	if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
		/* no PLL needed */
		if (btv->pll.pll_current == 0)
			return;
		bttv_printk(KERN_INFO "bttv%d: PLL can sleep, using XTAL (%d).\n",
			btv->c.nr,btv->pll.pll_ifreq);
		btwrite(0x00,BT848_TGCTRL);
		btwrite(0x00,BT848_PLL_XCI);
		btv->pll.pll_current = 0;
		return;
	}

	bttv_printk(KERN_INFO "bttv%d: PLL: %d => %d ",btv->c.nr,
		btv->pll.pll_ifreq, btv->pll.pll_ofreq);
	set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);

	for (i=0; i<10; i++) {
		/*  Let other people run while the PLL stabilizes */
		bttv_printk(".");
		msleep(10);

		if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
			btwrite(0,BT848_DSTATUS);
		} else {
			btwrite(0x08,BT848_TGCTRL);
			btv->pll.pll_current = btv->pll.pll_ofreq;
			bttv_printk(" ok\n");
			return;
		}
	}
	btv->pll.pll_current = -1;
	bttv_printk("failed\n");
	return;
}

/* used to switch between the bt848's analog/digital video capture modes */
static void bt848A_set_timing(struct bttv *btv)
{
	int i, len;
	int table_idx = bttv_tvnorms[btv->tvnorm].sram;
	int fsc       = bttv_tvnorms[btv->tvnorm].Fsc;

	if (UNSET == bttv_tvcards[btv->c.type].muxsel[btv->input]) {
		dprintk("bttv%d: load digital timing table (table_idx=%d)\n",
			btv->c.nr,table_idx);

		/* timing change...reset timing generator address */
		btwrite(0x00, BT848_TGCTRL);
		btwrite(0x02, BT848_TGCTRL);
		btwrite(0x00, BT848_TGCTRL);

		len=SRAM_Table[table_idx][0];
		for(i = 1; i <= len; i++)
			btwrite(SRAM_Table[table_idx][i],BT848_TGLB);
		btv->pll.pll_ofreq = 27000000;

		set_pll(btv);
		btwrite(0x11, BT848_TGCTRL);
		btwrite(0x41, BT848_DVSIF);
	} else {
		btv->pll.pll_ofreq = fsc;
		set_pll(btv);
		btwrite(0x0, BT848_DVSIF);
	}
}

/* ----------------------------------------------------------------------- */

static void bt848_bright(struct bttv *btv, int bright)
{
	int value;

	// printk("bttv: set bright: %d\n",bright); // DEBUG
	btv->bright = bright;

	/* We want -128 to 127 we get 0-65535 */
	value = (bright >> 8) - 128;
	btwrite(value & 0xff, BT848_BRIGHT);
}

static void bt848_hue(struct bttv *btv, int hue)
{
	int value;

	btv->hue = hue;

	/* -128 to 127 */
	value = (hue >> 8) - 128;
	btwrite(value & 0xff, BT848_HUE);
}

static void bt848_contrast(struct bttv *btv, int cont)
{
	int value,hibit;

	btv->contrast = cont;

	/* 0-511 */
	value = (cont  >> 7);
	hibit = (value >> 6) & 4;
	btwrite(value & 0xff, BT848_CONTRAST_LO);
	btaor(hibit, ~4, BT848_E_CONTROL);
	btaor(hibit, ~4, BT848_O_CONTROL);
}

static void bt848_sat(struct bttv *btv, int color)
{
	int val_u,val_v,hibits;

	btv->saturation = color;

	/* 0-511 for the color */
	val_u   = ((color * btv->opt_uv_ratio) / 50) >> 7;
	val_v   = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254;
	hibits  = (val_u >> 7) & 2;
	hibits |= (val_v >> 8) & 1;
	btwrite(val_u & 0xff, BT848_SAT_U_LO);
	btwrite(val_v & 0xff, BT848_SAT_V_LO);
	btaor(hibits, ~3, BT848_E_CONTROL);
	btaor(hibits, ~3, BT848_O_CONTROL);
}

/* ----------------------------------------------------------------------- */

static int
video_mux(struct bttv *btv, unsigned int input)
{
	int mux,mask2;

	if (input >= bttv_tvcards[btv->c.type].video_inputs)
		return -EINVAL;

	/* needed by RemoteVideo MX */
	mask2 = bttv_tvcards[btv->c.type].gpiomask2;
	if (mask2)
		gpio_inout(mask2,mask2);

	if (input == btv->svhs)  {
		btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
		btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
	} else {
		btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
		btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
	}
	mux = bttv_tvcards[btv->c.type].muxsel[input] & 3;
	btaor(mux<<5, ~(3<<5), BT848_IFORM);
	dprintk(KERN_DEBUG "bttv%d: video mux: input=%d mux=%d\n",
		btv->c.nr,input,mux);

	/* card specific hook */
	if(bttv_tvcards[btv->c.type].muxsel_hook)
		bttv_tvcards[btv->c.type].muxsel_hook (btv, input);
	return 0;
}

static char *audio_modes[] = {
	"audio: tuner", "audio: radio", "audio: extern",
	"audio: intern", "audio: mute"
};

static int
audio_mux(struct bttv *btv, int input, int mute)
{
	int gpio_val, signal;
	struct v4l2_control ctrl;
	struct i2c_client *c;

	gpio_inout(bttv_tvcards[btv->c.type].gpiomask,
		   bttv_tvcards[btv->c.type].gpiomask);
	signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC;

	btv->mute = mute;
	btv->audio = input;

	/* automute */
	mute = mute || (btv->opt_automute && !signal && !btv->radio_user);

	if (mute)
		gpio_val = bttv_tvcards[btv->c.type].gpiomute;
	else
		gpio_val = bttv_tvcards[btv->c.type].gpiomux[input];
#if 0
	printk("bttv%d: amux: input=%d mute=%d signal=%s gpio_mux=%d irq=%s\n",
	       btv->c.nr, input, mute, signal ? "yes" : "no",
	       gpio_val, in_interrupt() ? "yes" : "no");
#endif

	gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val);
	if (bttv_gpio)
		bttv_gpio_tracking(btv, audio_modes[mute ? 4 : input]);
	if (in_interrupt())
		return 0;

	ctrl.id = V4L2_CID_AUDIO_MUTE;
	ctrl.value = btv->mute;
	bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, &ctrl);
	c = btv->i2c_msp34xx_client;
	if (c) {
		struct v4l2_routing route;

		/* Note: the inputs tuner/radio/extern/intern are translated
		   to msp routings. This assumes common behavior for all msp3400
		   based TV cards. When this assumption fails, then the
		   specific MSP routing must be added to the card table.
		   For now this is sufficient. */
		switch (input) {
		case TVAUDIO_INPUT_RADIO:
			route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
			break;
		case TVAUDIO_INPUT_EXTERN:
			route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
			break;
		case TVAUDIO_INPUT_INTERN:
			/* Yes, this is the same input as for RADIO. I doubt
			   if this is ever used. The only board with an INTERN
			   input is the BTTV_BOARD_AVERMEDIA98. I wonder how
			   that was tested. My guess is that the whole INTERN
			   input does not work. */
			route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
				    MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
			break;
		case TVAUDIO_INPUT_TUNER:
		default:
			route.input = MSP_INPUT_DEFAULT;
			break;
		}
		route.output = MSP_OUTPUT_DEFAULT;
		c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route);