[deliverable/linux.git] / drivers / media / video / cx18 / cx18-av-audio.c

/*
 *  cx18 ADEC audio functions
 *
 *  Derived from cx25840-audio.c
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA
 *  02110-1301, USA.
 */

#include "cx18-driver.h"

static int set_audclk_freq(struct cx18 *cx, u32 freq)
{
	struct cx18_av_state *state = &cx->av_state;

	if (freq != 32000 && freq != 44100 && freq != 48000)
		return -EINVAL;

	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
	cx18_av_write(cx, 0x127, 0x50);

	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
		switch (freq) {
		case 32000:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x1408040f);

			/* AUX_PLL_FRAC */
			/* 0x8.9504318a * 28,636,363.636 / 0x14 = 32000 * 384 */
			cx18_av_write4(cx, 0x110, 0x012a0863);

			/* src3/4/6_ctl */
			/* 0x1.f77f = (4 * 15734.26) / 32000 */
			cx18_av_write4(cx, 0x900, 0x0801f77f);
			cx18_av_write4(cx, 0x904, 0x0801f77f);
			cx18_av_write4(cx, 0x90c, 0x0801f77f);

			/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
			cx18_av_write(cx, 0x127, 0x54);

			/* AUD_COUNT = 0x2fff = 8 samples * 4 * 384 - 1 */
			cx18_av_write4(cx, 0x12c, 0x11202fff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
			 *  ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa10d2ef8);
			break;

		case 44100:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x1009040f);

			/* AUX_PLL_FRAC */
			/* 0x9.7635e7 * 28,636,363.63 / 0x10 = 44100 * 384 */
			cx18_av_write4(cx, 0x110, 0x00ec6bce);

			/* src3/4/6_ctl */
			/* 0x1.6d59 = (4 * 15734.26) / 44100 */
			cx18_av_write4(cx, 0x900, 0x08016d59);
			cx18_av_write4(cx, 0x904, 0x08016d59);
			cx18_av_write4(cx, 0x90c, 0x08016d59);

			/* AUD_COUNT = 0x92ff = 49 samples * 2 * 384 - 1 */
			cx18_av_write4(cx, 0x12c, 0x112092ff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
			 *  ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa11d4bf8);
			break;

		case 48000:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x100a040f);

			/* AUX_PLL_FRAC */
			/* 0xa.4c6b6ea * 28,636,363.63 / 0x10 = 48000 * 384 */
			cx18_av_write4(cx, 0x110, 0x0098d6dd);

			/* src3/4/6_ctl */
			/* 0x1.4faa = (4 * 15734.26) / 48000 */
			cx18_av_write4(cx, 0x900, 0x08014faa);
			cx18_av_write4(cx, 0x904, 0x08014faa);
			cx18_av_write4(cx, 0x90c, 0x08014faa);

			/* AUD_COUNT = 0x5fff = 4 samples * 16 * 384 - 1 */
			cx18_av_write4(cx, 0x12c, 0x11205fff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
			 *  ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa11193f8);
			break;
		}
	} else {
		switch (freq) {
		case 32000:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x1e08040f);

			/* AUX_PLL_FRAC */
			/* 0x8.9504318 * 28,636,363.63 / 0x1e = 32000 * 256 */
			cx18_av_write4(cx, 0x110, 0x012a0863);

			/* src1_ctl */
			/* 0x1.0000 = 32000/32000 */
			cx18_av_write4(cx, 0x8f8, 0x08010000);

			/* src3/4/6_ctl */
			/* 0x2.0000 = 2 * (32000/32000) */
			cx18_av_write4(cx, 0x900, 0x08020000);
			cx18_av_write4(cx, 0x904, 0x08020000);
			cx18_av_write4(cx, 0x90c, 0x08020000);

			/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
			cx18_av_write(cx, 0x127, 0x54);

			/* AUD_COUNT = 0x1fff = 8 samples * 4 * 256 - 1 */
			cx18_av_write4(cx, 0x12c, 0x11201fff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
			 *  ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa10d2ef8);
			break;

		case 44100:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x1809040f);

			/* AUX_PLL_FRAC */
			/* 0x9.7635e74 * 28,636,363.63 / 0x18 = 44100 * 256 */
			cx18_av_write4(cx, 0x110, 0x00ec6bce);

			/* src1_ctl */
			/* 0x1.60cd = 44100/32000 */
			cx18_av_write4(cx, 0x8f8, 0x080160cd);

			/* src3/4/6_ctl */
			/* 0x1.7385 = 2 * (32000/44100) */
			cx18_av_write4(cx, 0x900, 0x08017385);
			cx18_av_write4(cx, 0x904, 0x08017385);
			cx18_av_write4(cx, 0x90c, 0x08017385);

			/* AUD_COUNT = 0x61ff = 49 samples * 2 * 256 - 1 */
			cx18_av_write4(cx, 0x12c, 0x112061ff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
			 *  ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa11d4bf8);
			break;

		case 48000:
			/* VID_PLL and AUX_PLL */
			cx18_av_write4(cx, 0x108, 0x180a040f);

			/* AUX_PLL_FRAC */
			/* 0xa.4c6b6ea * 28,636,363.63 / 0x18 = 48000 * 256 */
			cx18_av_write4(cx, 0x110, 0x0098d6dd);

			/* src1_ctl */
			/* 0x1.8000 = 48000/32000 */
			cx18_av_write4(cx, 0x8f8, 0x08018000);

			/* src3/4/6_ctl */
			/* 0x1.5555 = 2 * (32000/48000) */
			cx18_av_write4(cx, 0x900, 0x08015555);
			cx18_av_write4(cx, 0x904, 0x08015555);
			cx18_av_write4(cx, 0x90c, 0x08015555);

			/* AUD_COUNT = 0x3fff = 4 samples * 16 * 256 - 1 */
			cx18_av_write4(cx, 0x12c, 0x11203fff);

			/*
			 * EN_AV_LOCK = 1
			 * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
			 *  ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
			 */
			cx18_av_write4(cx, 0x128, 0xa11193f8);
			break;
		}
	}

	state->audclk_freq = freq;

	return 0;
}

void cx18_av_audio_set_path(struct cx18 *cx)
{
	struct cx18_av_state *state = &cx->av_state;
	u8 v;

	/* stop microcontroller */
	v = cx18_av_read(cx, 0x803) & ~0x10;
	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);

	/* assert soft reset */
	v = cx18_av_read(cx, 0x810) | 0x01;
	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);

	/* Mute everything to prevent the PFFT! */
	cx18_av_write(cx, 0x8d3, 0x1f);

	if (state->aud_input <= CX18_AV_AUDIO_SERIAL2) {
		/* Set Path1 to Serial Audio Input */
		cx18_av_write4(cx, 0x8d0, 0x01011012);

		/* The microcontroller should not be started for the
		 * non-tuner inputs: autodetection is specific for
		 * TV audio. */
	} else {
		/* Set Path1 to Analog Demod Main Channel */
		cx18_av_write4(cx, 0x8d0, 0x1f063870);
	}

	set_audclk_freq(cx, state->audclk_freq);

	/* deassert soft reset */
	v = cx18_av_read(cx, 0x810) & ~0x01;
	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);

	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
		/* When the microcontroller detects the
		 * audio format, it will unmute the lines */
		v = cx18_av_read(cx, 0x803) | 0x10;
		cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
	}
}

static int get_volume(struct cx18 *cx)
{
	/* Volume runs +18dB to -96dB in 1/2dB steps
	 * change to fit the msp3400 -114dB to +12dB range */

	/* check PATH1_VOLUME */
	int vol = 228 - cx18_av_read(cx, 0x8d4);
	vol = (vol / 2) + 23;
	return vol << 9;
}

static void set_volume(struct cx18 *cx, int volume)
{
	/* First convert the volume to msp3400 values (0-127) */
	int vol = volume >> 9;
	/* now scale it up to cx18_av values
	 * -114dB to -96dB maps to 0
	 * this should be 19, but in my testing that was 4dB too loud */
	if (vol <= 23)
		vol = 0;
	else
		vol -= 23;

	/* PATH1_VOLUME */
	cx18_av_write(cx, 0x8d4, 228 - (vol * 2));
}

static int get_bass(struct cx18 *cx)
{
	/* bass is 49 steps +12dB to -12dB */

	/* check PATH1_EQ_BASS_VOL */
	int bass = cx18_av_read(cx, 0x8d9) & 0x3f;
	bass = (((48 - bass) * 0xffff) + 47) / 48;
	return bass;
}

static void set_bass(struct cx18 *cx, int bass)
{
	/* PATH1_EQ_BASS_VOL */
	cx18_av_and_or(cx, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
}

static int get_treble(struct cx18 *cx)
{
	/* treble is 49 steps +12dB to -12dB */

	/* check PATH1_EQ_TREBLE_VOL */
	int treble = cx18_av_read(cx, 0x8db) & 0x3f;
	treble = (((48 - treble) * 0xffff) + 47) / 48;
	return treble;
}

static void set_treble(struct cx18 *cx, int treble)
{
	/* PATH1_EQ_TREBLE_VOL */
	cx18_av_and_or(cx, 0x8db, ~0x3f, 48 - (treble * 48 / 0xffff));
}

static int get_balance(struct cx18 *cx)
{
	/* balance is 7 bit, 0 to -96dB */

	/* check PATH1_BAL_LEVEL */
	int balance = cx18_av_read(cx, 0x8d5) & 0x7f;
	/* check PATH1_BAL_LEFT */
	if ((cx18_av_read(cx, 0x8d5) & 0x80) == 0)
		balance = 0x80 - balance;
	else
		balance = 0x80 + balance;
	return balance << 8;
}

static void set_balance(struct cx18 *cx, int balance)
{
	int bal = balance >> 8;
	if (bal > 0x80) {
		/* PATH1_BAL_LEFT */
		cx18_av_and_or(cx, 0x8d5, 0x7f, 0x80);
		/* PATH1_BAL_LEVEL */
		cx18_av_and_or(cx, 0x8d5, ~0x7f, bal & 0x7f);
	} else {
		/* PATH1_BAL_LEFT */
		cx18_av_and_or(cx, 0x8d5, 0x7f, 0x00);
		/* PATH1_BAL_LEVEL */
		cx18_av_and_or(cx, 0x8d5, ~0x7f, 0x80 - bal);
	}
}

static int get_mute(struct cx18 *cx)
{
	/* check SRC1_MUTE_EN */
	return cx18_av_read(cx, 0x8d3) & 0x2 ? 1 : 0;
}

static void set_mute(struct cx18 *cx, int mute)
{
	struct cx18_av_state *state = &cx->av_state;
	u8 v;

	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
		/* Must turn off microcontroller in order to mute sound.
		 * Not sure if this is the best method, but it does work.
		 * If the microcontroller is running, then it will undo any
		 * changes to the mute register. */
		v = cx18_av_read(cx, 0x803);
		if (mute) {
			/* disable microcontroller */
			v &= ~0x10;
			cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
			cx18_av_write(cx, 0x8d3, 0x1f);
		} else {
			/* enable microcontroller */
			v |= 0x10;
			cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
		}
	} else {
		/* SRC1_MUTE_EN */
		cx18_av_and_or(cx, 0x8d3, ~0x2, mute ? 0x02 : 0x00);
	}
}

int cx18_av_audio(struct cx18 *cx, unsigned int cmd, void *arg)
{
	struct cx18_av_state *state = &cx->av_state;
	struct v4l2_control *ctrl = arg;
	int retval;

	switch (cmd) {
	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
	{
		u8 v;
		if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
			v = cx18_av_read(cx, 0x803) & ~0x10;
			cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
			cx18_av_write(cx, 0x8d3, 0x1f);
		}
		v = cx18_av_read(cx, 0x810) | 0x1;
		cx18_av_write_expect(cx, 0x810, v, v, 0x0f);

		retval = set_audclk_freq(cx, *(u32 *)arg);

		v = cx18_av_read(cx, 0x810) & ~0x1;
		cx18_av_write_expect(cx, 0x810, v, v, 0x0f);
		if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
			v = cx18_av_read(cx, 0x803) | 0x10;
			cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
		}
		return retval;
	}

	case VIDIOC_G_CTRL:
		switch (ctrl->id) {
		case V4L2_CID_AUDIO_VOLUME:
			ctrl->value = get_volume(cx);
			break;
		case V4L2_CID_AUDIO_BASS:
			ctrl->value = get_bass(cx);
			break;
		case V4L2_CID_AUDIO_TREBLE:
			ctrl->value = get_treble(cx);
			break;
		case V4L2_CID_AUDIO_BALANCE:
			ctrl->value = get_balance(cx);
			break;
		case V4L2_CID_AUDIO_MUTE:
			ctrl->value = get_mute(cx);
			break;
		default:
			return -EINVAL;
		}
		break;

	case VIDIOC_S_CTRL:
		switch (ctrl->id) {
		case V4L2_CID_AUDIO_VOLUME:
			set_volume(cx, ctrl->value);
			break;
		case V4L2_CID_AUDIO_BASS:
			set_bass(cx, ctrl->value);
			break;
		case V4L2_CID_AUDIO_TREBLE:
			set_treble(cx, ctrl->value);
			break;
		case V4L2_CID_AUDIO_BALANCE:
			set_balance(cx, ctrl->value);
			break;
		case V4L2_CID_AUDIO_MUTE:
			set_mute(cx, ctrl->value);
			break;
		default:
			return -EINVAL;
		}
		break;

	default:
		return -EINVAL;
	}

	return 0;
}
Commit	Line	Data
1c1e45d1 HV	1	/*
	2	* cx18 ADEC audio functions
	3	*
	4	* Derived from cx25840-audio.c
	5	*
	6	* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version 2
	11	* of the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	21	* 02110-1301, USA.
	22	*/
	23
	24	#include "cx18-driver.h"
	25
	26	static int set_audclk_freq(struct cx18 *cx, u32 freq)
	27	{
	28	struct cx18_av_state *state = &cx->av_state;
	29
	30	if (freq != 32000 && freq != 44100 && freq != 48000)
	31	return -EINVAL;
	32
1c1e45d1 HV	33	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
	34	cx18_av_write(cx, 0x127, 0x50);
	35
81cb727d	36	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
1c1e45d1 HV	37	switch (freq) {
	38	case 32000:
	39	/* VID_PLL and AUX_PLL */
f8f6296a	40	cx18_av_write4(cx, 0x108, 0x1408040f);
1c1e45d1 HV	41
1c1e45d1 HV	42	/* AUX_PLL_FRAC */
f8f6296a AW	43	/* 0x8.9504318a * 28,636,363.636 / 0x14 = 32000 * 384 */
f8f6296a AW	44	cx18_av_write4(cx, 0x110, 0x012a0863);
1c1e45d1	45
f8f6296a AW	46	/* src3/4/6_ctl */
f8f6296a AW	47	/* 0x1.f77f = (4 * 15734.26) / 32000 */
1c1e45d1 HV	48	cx18_av_write4(cx, 0x900, 0x0801f77f);
	49	cx18_av_write4(cx, 0x904, 0x0801f77f);
	50	cx18_av_write4(cx, 0x90c, 0x0801f77f);
f8f6296a AW	51
	52	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
	53	cx18_av_write(cx, 0x127, 0x54);
35f92b2a AW	54
	55	/* AUD_COUNT = 0x2fff = 8 samples * 4 * 384 - 1 */
	56	cx18_av_write4(cx, 0x12c, 0x11202fff);
	57
	58	/*
	59	* EN_AV_LOCK = 1
	60	* VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
	61	* ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
	62	*/
	63	cx18_av_write4(cx, 0x128, 0xa10d2ef8);
1c1e45d1 HV	64	break;
	65
	66	case 44100:
	67	/* VID_PLL and AUX_PLL */
	68	cx18_av_write4(cx, 0x108, 0x1009040f);
	69
	70	/* AUX_PLL_FRAC */
35f92b2a AW	71	/* 0x9.7635e7 * 28,636,363.63 / 0x10 = 44100 * 384 */
35f92b2a AW	72	cx18_av_write4(cx, 0x110, 0x00ec6bce);
1c1e45d1	73
f8f6296a AW	74	/* src3/4/6_ctl */
f8f6296a AW	75	/* 0x1.6d59 = (4 * 15734.26) / 44100 */
1c1e45d1 HV	76	cx18_av_write4(cx, 0x900, 0x08016d59);
	77	cx18_av_write4(cx, 0x904, 0x08016d59);
	78	cx18_av_write4(cx, 0x90c, 0x08016d59);
35f92b2a AW	79
	80	/* AUD_COUNT = 0x92ff = 49 samples * 2 * 384 - 1 */
	81	cx18_av_write4(cx, 0x12c, 0x112092ff);
	82
	83	/*
	84	* EN_AV_LOCK = 1
	85	* VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
	86	* ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
	87	*/
	88	cx18_av_write4(cx, 0x128, 0xa11d4bf8);
1c1e45d1 HV	89	break;
	90
	91	case 48000:
	92	/* VID_PLL and AUX_PLL */
	93	cx18_av_write4(cx, 0x108, 0x100a040f);
	94
	95	/* AUX_PLL_FRAC */
35f92b2a AW	96	/* 0xa.4c6b6ea * 28,636,363.63 / 0x10 = 48000 * 384 */
35f92b2a AW	97	cx18_av_write4(cx, 0x110, 0x0098d6dd);
1c1e45d1	98
f8f6296a AW	99	/* src3/4/6_ctl */
f8f6296a AW	100	/* 0x1.4faa = (4 * 15734.26) / 48000 */
1c1e45d1 HV	101	cx18_av_write4(cx, 0x900, 0x08014faa);
	102	cx18_av_write4(cx, 0x904, 0x08014faa);
	103	cx18_av_write4(cx, 0x90c, 0x08014faa);
35f92b2a AW	104
	105	/* AUD_COUNT = 0x5fff = 4 samples * 16 * 384 - 1 */
	106	cx18_av_write4(cx, 0x12c, 0x11205fff);
	107
	108	/*
	109	* EN_AV_LOCK = 1
	110	* VID_COUNT = 0x1193f8 = 143999.000 * 8 =
	111	* ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
	112	*/
	113	cx18_av_write4(cx, 0x128, 0xa11193f8);
1c1e45d1 HV	114	break;
	115	}
	116	} else {
	117	switch (freq) {
	118	case 32000:
	119	/* VID_PLL and AUX_PLL */
	120	cx18_av_write4(cx, 0x108, 0x1e08040f);
	121
	122	/* AUX_PLL_FRAC */
35f92b2a AW	123	/* 0x8.9504318 * 28,636,363.63 / 0x1e = 32000 * 256 */
35f92b2a AW	124	cx18_av_write4(cx, 0x110, 0x012a0863);
1c1e45d1	125
f8f6296a AW	126	/* src1_ctl */
f8f6296a AW	127	/* 0x1.0000 = 32000/32000 */
1c1e45d1 HV	128	cx18_av_write4(cx, 0x8f8, 0x08010000);
1c1e45d1 HV	129
f8f6296a AW	130	/* src3/4/6_ctl */
f8f6296a AW	131	/* 0x2.0000 = 2 * (32000/32000) */
1c1e45d1 HV	132	cx18_av_write4(cx, 0x900, 0x08020000);
	133	cx18_av_write4(cx, 0x904, 0x08020000);
	134	cx18_av_write4(cx, 0x90c, 0x08020000);
	135
	136	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
	137	cx18_av_write(cx, 0x127, 0x54);
35f92b2a AW	138
	139	/* AUD_COUNT = 0x1fff = 8 samples * 4 * 256 - 1 */
	140	cx18_av_write4(cx, 0x12c, 0x11201fff);
	141
	142	/*
	143	* EN_AV_LOCK = 1
	144	* VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
	145	* ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
	146	*/
	147	cx18_av_write4(cx, 0x128, 0xa10d2ef8);
1c1e45d1 HV	148	break;
	149
	150	case 44100:
	151	/* VID_PLL and AUX_PLL */
	152	cx18_av_write4(cx, 0x108, 0x1809040f);
	153
	154	/* AUX_PLL_FRAC */
35f92b2a AW	155	/* 0x9.7635e74 * 28,636,363.63 / 0x18 = 44100 * 256 */
35f92b2a AW	156	cx18_av_write4(cx, 0x110, 0x00ec6bce);
1c1e45d1	157
f8f6296a AW	158	/* src1_ctl */
f8f6296a AW	159	/* 0x1.60cd = 44100/32000 */
1c1e45d1 HV	160	cx18_av_write4(cx, 0x8f8, 0x080160cd);
1c1e45d1 HV	161
f8f6296a AW	162	/* src3/4/6_ctl */
f8f6296a AW	163	/* 0x1.7385 = 2 * (32000/44100) */
1c1e45d1 HV	164	cx18_av_write4(cx, 0x900, 0x08017385);
	165	cx18_av_write4(cx, 0x904, 0x08017385);
	166	cx18_av_write4(cx, 0x90c, 0x08017385);
35f92b2a AW	167
	168	/* AUD_COUNT = 0x61ff = 49 samples * 2 * 256 - 1 */
	169	cx18_av_write4(cx, 0x12c, 0x112061ff);
	170
	171	/*
	172	* EN_AV_LOCK = 1
	173	* VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
	174	* ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
	175	*/
	176	cx18_av_write4(cx, 0x128, 0xa11d4bf8);
1c1e45d1 HV	177	break;
	178
	179	case 48000:
	180	/* VID_PLL and AUX_PLL */
	181	cx18_av_write4(cx, 0x108, 0x180a040f);
	182
	183	/* AUX_PLL_FRAC */
35f92b2a AW	184	/* 0xa.4c6b6ea * 28,636,363.63 / 0x18 = 48000 * 256 */
35f92b2a AW	185	cx18_av_write4(cx, 0x110, 0x0098d6dd);
1c1e45d1	186
f8f6296a AW	187	/* src1_ctl */
f8f6296a AW	188	/* 0x1.8000 = 48000/32000 */
1c1e45d1 HV	189	cx18_av_write4(cx, 0x8f8, 0x08018000);
1c1e45d1 HV	190
f8f6296a AW	191	/* src3/4/6_ctl */
f8f6296a AW	192	/* 0x1.5555 = 2 * (32000/48000) */
1c1e45d1 HV	193	cx18_av_write4(cx, 0x900, 0x08015555);
	194	cx18_av_write4(cx, 0x904, 0x08015555);
	195	cx18_av_write4(cx, 0x90c, 0x08015555);
35f92b2a AW	196
	197	/* AUD_COUNT = 0x3fff = 4 samples * 16 * 256 - 1 */
	198	cx18_av_write4(cx, 0x12c, 0x11203fff);
	199
	200	/*
	201	* EN_AV_LOCK = 1
	202	* VID_COUNT = 0x1193f8 = 143999.000 * 8 =
	203	* ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
	204	*/
	205	cx18_av_write4(cx, 0x128, 0xa11193f8);
1c1e45d1 HV	206	break;
	207	}
	208	}
	209
	210	state->audclk_freq = freq;
	211
	212	return 0;
	213	}
	214
	215	void cx18_av_audio_set_path(struct cx18 *cx)
	216	{
	217	struct cx18_av_state *state = &cx->av_state;
ced07371	218	u8 v;
1c1e45d1 HV	219
1c1e45d1 HV	220	/* stop microcontroller */
ced07371 AW	221	v = cx18_av_read(cx, 0x803) & ~0x10;
ced07371 AW	222	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
1c1e45d1 HV	223
1c1e45d1 HV	224	/* assert soft reset */
ced07371 AW	225	v = cx18_av_read(cx, 0x810) \| 0x01;
ced07371 AW	226	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);
1c1e45d1 HV	227
	228	/* Mute everything to prevent the PFFT! */
	229	cx18_av_write(cx, 0x8d3, 0x1f);
	230
81cb727d	231	if (state->aud_input <= CX18_AV_AUDIO_SERIAL2) {
1c1e45d1 HV	232	/* Set Path1 to Serial Audio Input */
	233	cx18_av_write4(cx, 0x8d0, 0x01011012);
	234
	235	/* The microcontroller should not be started for the
	236	* non-tuner inputs: autodetection is specific for
	237	* TV audio. */
	238	} else {
	239	/* Set Path1 to Analog Demod Main Channel */
	240	cx18_av_write4(cx, 0x8d0, 0x1f063870);
	241	}
	242
	243	set_audclk_freq(cx, state->audclk_freq);
	244
	245	/* deassert soft reset */
ced07371 AW	246	v = cx18_av_read(cx, 0x810) & ~0x01;
ced07371 AW	247	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);
1c1e45d1	248
81cb727d	249	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
1c1e45d1 HV	250	/* When the microcontroller detects the
1c1e45d1 HV	251	* audio format, it will unmute the lines */
ced07371 AW	252	v = cx18_av_read(cx, 0x803) \| 0x10;
ced07371 AW	253	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
1c1e45d1 HV	254	}
	255	}
	256
	257	static int get_volume(struct cx18 *cx)
	258	{
	259	/* Volume runs +18dB to -96dB in 1/2dB steps
	260	* change to fit the msp3400 -114dB to +12dB range */
	261
	262	/* check PATH1_VOLUME */
	263	int vol = 228 - cx18_av_read(cx, 0x8d4);
	264	vol = (vol / 2) + 23;
	265	return vol << 9;
	266	}
	267
	268	static void set_volume(struct cx18 *cx, int volume)
	269	{
	270	/* First convert the volume to msp3400 values (0-127) */
	271	int vol = volume >> 9;
	272	/* now scale it up to cx18_av values
	273	* -114dB to -96dB maps to 0
	274	* this should be 19, but in my testing that was 4dB too loud */
	275	if (vol <= 23)
	276	vol = 0;
	277	else
	278	vol -= 23;
	279
	280	/* PATH1_VOLUME */
	281	cx18_av_write(cx, 0x8d4, 228 - (vol * 2));
	282	}
	283
	284	static int get_bass(struct cx18 *cx)
	285	{
	286	/* bass is 49 steps +12dB to -12dB */
	287
	288	/* check PATH1_EQ_BASS_VOL */
	289	int bass = cx18_av_read(cx, 0x8d9) & 0x3f;
	290	bass = (((48 - bass) * 0xffff) + 47) / 48;
	291	return bass;
	292	}
	293
	294	static void set_bass(struct cx18 *cx, int bass)
	295	{
	296	/* PATH1_EQ_BASS_VOL */
	297	cx18_av_and_or(cx, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
	298	}
	299
	300	static int get_treble(struct cx18 *cx)
	301	{
	302	/* treble is 49 steps +12dB to -12dB */
	303
	304	/* check PATH1_EQ_TREBLE_VOL */
	305	int treble = cx18_av_read(cx, 0x8db) & 0x3f;
	306	treble = (((48 - treble) * 0xffff) + 47) / 48;
	307	return treble;
	308	}
	309
	310	static void set_treble(struct cx18 *cx, int treble)
	311	{
	312	/* PATH1_EQ_TREBLE_VOL */
	313	cx18_av_and_or(cx, 0x8db, ~0x3f, 48 - (treble * 48 / 0xffff));
	314	}
	315
	316	static int get_balance(struct cx18 *cx)
	317	{
318	/* balance is 7 bit, 0 to -96dB */
319
320	/* check PATH1_BAL_LEVEL */
321	int balance = cx18_av_read(cx, 0x8d5) & 0x7f;
322	/* check PATH1_BAL_LEFT */
323	if ((cx18_av_read(cx, 0x8d5) & 0x80) == 0)
324	balance = 0x80 - balance;
325	else
326	balance = 0x80 + balance;
327	return balance << 8;
328	}
329
330	static void set_balance(struct cx18 *cx, int balance)
331	{
332	int bal = balance >> 8;
333	if (bal > 0x80) {
334	/* PATH1_BAL_LEFT */
335	cx18_av_and_or(cx, 0x8d5, 0x7f, 0x80);
336	/* PATH1_BAL_LEVEL */
337	cx18_av_and_or(cx, 0x8d5, ~0x7f, bal & 0x7f);
338	} else {
339	/* PATH1_BAL_LEFT */
340	cx18_av_and_or(cx, 0x8d5, 0x7f, 0x00);
341	/* PATH1_BAL_LEVEL */
342	cx18_av_and_or(cx, 0x8d5, ~0x7f, 0x80 - bal);
343	}
344	}
345
346	static int get_mute(struct cx18 *cx)
347	{
348	/* check SRC1_MUTE_EN */
349	return cx18_av_read(cx, 0x8d3) & 0x2 ? 1 : 0;
350	}
351
352	static void set_mute(struct cx18 *cx, int mute)
353	{
354	struct cx18_av_state *state = &cx->av_state;
ced07371	355	u8 v;
1c1e45d1	356
81cb727d	357	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
1c1e45d1 HV	358	/* Must turn off microcontroller in order to mute sound.
	359	* Not sure if this is the best method, but it does work.
	360	* If the microcontroller is running, then it will undo any
	361	* changes to the mute register. */
ced07371	362	v = cx18_av_read(cx, 0x803);
1c1e45d1 HV	363	if (mute) {
1c1e45d1 HV	364	/* disable microcontroller */
ced07371 AW	365	v &= ~0x10;
ced07371 AW	366	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
1c1e45d1 HV	367	cx18_av_write(cx, 0x8d3, 0x1f);
	368	} else {
	369	/* enable microcontroller */
ced07371 AW	370	v \|= 0x10;
ced07371 AW	371	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
1c1e45d1 HV	372	}
	373	} else {
	374	/* SRC1_MUTE_EN */
	375	cx18_av_and_or(cx, 0x8d3, ~0x2, mute ? 0x02 : 0x00);
	376	}
	377	}
	378
	379	int cx18_av_audio(struct cx18 cx, unsigned int cmd, void arg)
	380	{
	381	struct cx18_av_state *state = &cx->av_state;
	382	struct v4l2_control *ctrl = arg;
	383	int retval;
	384
	385	switch (cmd) {
	386	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
ced07371 AW	387	{
ced07371 AW	388	u8 v;
81cb727d	389	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
ced07371 AW	390	v = cx18_av_read(cx, 0x803) & ~0x10;
ced07371 AW	391	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
1c1e45d1 HV	392	cx18_av_write(cx, 0x8d3, 0x1f);
1c1e45d1 HV	393	}
ced07371 AW	394	v = cx18_av_read(cx, 0x810) \| 0x1;
	395	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);
	396
1c1e45d1	397	retval = set_audclk_freq(cx, (u32 )arg);
ced07371 AW	398
	399	v = cx18_av_read(cx, 0x810) & ~0x1;
	400	cx18_av_write_expect(cx, 0x810, v, v, 0x0f);
	401	if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
	402	v = cx18_av_read(cx, 0x803) \| 0x10;
	403	cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
	404	}
1c1e45d1	405	return retval;
ced07371	406	}
1c1e45d1 HV	407
	408	case VIDIOC_G_CTRL:
	409	switch (ctrl->id) {
	410	case V4L2_CID_AUDIO_VOLUME:
	411	ctrl->value = get_volume(cx);
	412	break;
	413	case V4L2_CID_AUDIO_BASS:
	414	ctrl->value = get_bass(cx);
	415	break;
	416	case V4L2_CID_AUDIO_TREBLE:
	417	ctrl->value = get_treble(cx);
	418	break;
	419	case V4L2_CID_AUDIO_BALANCE:
	420	ctrl->value = get_balance(cx);
	421	break;
	422	case V4L2_CID_AUDIO_MUTE:
	423	ctrl->value = get_mute(cx);
	424	break;
	425	default:
	426	return -EINVAL;
	427	}
	428	break;
	429
	430	case VIDIOC_S_CTRL:
	431	switch (ctrl->id) {
	432	case V4L2_CID_AUDIO_VOLUME:
	433	set_volume(cx, ctrl->value);
	434	break;
	435	case V4L2_CID_AUDIO_BASS:
	436	set_bass(cx, ctrl->value);
	437	break;
	438	case V4L2_CID_AUDIO_TREBLE:
	439	set_treble(cx, ctrl->value);
	440	break;
	441	case V4L2_CID_AUDIO_BALANCE:
	442	set_balance(cx, ctrl->value);
	443	break;
	444	case V4L2_CID_AUDIO_MUTE:
	445	set_mute(cx, ctrl->value);
	446	break;
	447	default:
	448	return -EINVAL;
	449	}
	450	break;
	451
	452	default:
	453	return -EINVAL;
	454	}
	455
	456	return 0;
	457	}