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Diffstat (limited to 'drivers/media/video/cx18/cx18-av-audio.c')
-rw-r--r--drivers/media/video/cx18/cx18-av-audio.c471
1 files changed, 0 insertions, 471 deletions
diff --git a/drivers/media/video/cx18/cx18-av-audio.c b/drivers/media/video/cx18/cx18-av-audio.c
deleted file mode 100644
index 4a24ffb17a7d..000000000000
--- a/drivers/media/video/cx18/cx18-av-audio.c
+++ /dev/null
@@ -1,471 +0,0 @@
-/*
- * cx18 ADEC audio functions
- *
- * Derived from cx25840-audio.c
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
- *
- * 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;
-
- /*
- * The PLL parameters are based on the external crystal frequency that
- * would ideally be:
- *
- * NTSC Color subcarrier freq * 8 =
- * 4.5 MHz/286 * 455/2 * 8 = 28.63636363... MHz
- *
- * The accidents of history and rationale that explain from where this
- * combination of magic numbers originate can be found in:
- *
- * [1] Abrahams, I. C., "Choice of Chrominance Subcarrier Frequency in
- * the NTSC Standards", Proceedings of the I-R-E, January 1954, pp 79-80
- *
- * [2] Abrahams, I. C., "The 'Frequency Interleaving' Principle in the
- * NTSC Standards", Proceedings of the I-R-E, January 1954, pp 81-83
- *
- * As Mike Bradley has rightly pointed out, it's not the exact crystal
- * frequency that matters, only that all parts of the driver and
- * firmware are using the same value (close to the ideal value).
- *
- * Since I have a strong suspicion that, if the firmware ever assumes a
- * crystal value at all, it will assume 28.636360 MHz, the crystal
- * freq used in calculations in this driver will be:
- *
- * xtal_freq = 28.636360 MHz
- *
- * an error of less than 0.13 ppm which is way, way better than any off
- * the shelf crystal will have for accuracy anyway.
- *
- * Below I aim to run the PLLs' VCOs near 400 MHz to minimze error.
- *
- * Many thanks to Jeff Campbell and Mike Bradley for their extensive
- * investigation, experimentation, testing, and suggested solutions of
- * of audio/video sync problems with SVideo and CVBS captures.
- */
-
- if (state->aud_input > CX18_AV_AUDIO_SERIAL2) {
- switch (freq) {
- case 32000:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0d, AUX PLL Post Divider = 0x20
- */
- cx18_av_write4(cx, 0x108, 0x200d040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x176740c */
- /* xtal * 0xd.bb3a060/0x20 = 32000 * 384: 393 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x0176740c);
-
- /* src3/4/6_ctl */
- /* 0x1.f77f = (4 * xtal/8*2/455) / 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=0x20 */
- cx18_av_write(cx, 0x127, 0x60);
-
- /* AUD_COUNT = 0x2fff = 8 samples * 4 * 384 - 1 */
- cx18_av_write4(cx, 0x12c, 0x11202fff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
- * ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa00d2ef8);
- break;
-
- case 44100:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0e, AUX PLL Post Divider = 0x18
- */
- cx18_av_write4(cx, 0x108, 0x180e040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x062a1f2 */
- /* xtal * 0xe.3150f90/0x18 = 44100 * 384: 406 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x0062a1f2);
-
- /* src3/4/6_ctl */
- /* 0x1.6d59 = (4 * xtal/8*2/455) / 44100 */
- cx18_av_write4(cx, 0x900, 0x08016d59);
- cx18_av_write4(cx, 0x904, 0x08016d59);
- cx18_av_write4(cx, 0x90c, 0x08016d59);
-
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x18 */
- cx18_av_write(cx, 0x127, 0x58);
-
- /* AUD_COUNT = 0x92ff = 49 samples * 2 * 384 - 1 */
- cx18_av_write4(cx, 0x12c, 0x112092ff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
- * ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa01d4bf8);
- break;
-
- case 48000:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0e, AUX PLL Post Divider = 0x16
- */
- cx18_av_write4(cx, 0x108, 0x160e040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x05227ad */
- /* xtal * 0xe.2913d68/0x16 = 48000 * 384: 406 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x005227ad);
-
- /* src3/4/6_ctl */
- /* 0x1.4faa = (4 * xtal/8*2/455) / 48000 */
- cx18_av_write4(cx, 0x900, 0x08014faa);
- cx18_av_write4(cx, 0x904, 0x08014faa);
- cx18_av_write4(cx, 0x90c, 0x08014faa);
-
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x16 */
- cx18_av_write(cx, 0x127, 0x56);
-
- /* AUD_COUNT = 0x5fff = 4 samples * 16 * 384 - 1 */
- cx18_av_write4(cx, 0x12c, 0x11205fff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
- * ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa01193f8);
- break;
- }
- } else {
- switch (freq) {
- case 32000:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0d, AUX PLL Post Divider = 0x30
- */
- cx18_av_write4(cx, 0x108, 0x300d040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x176740c */
- /* xtal * 0xd.bb3a060/0x30 = 32000 * 256: 393 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x0176740c);
-
- /* 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=0x30 */
- cx18_av_write(cx, 0x127, 0x70);
-
- /* AUD_COUNT = 0x1fff = 8 samples * 4 * 256 - 1 */
- cx18_av_write4(cx, 0x12c, 0x11201fff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
- * ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa00d2ef8);
- break;
-
- case 44100:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0e, AUX PLL Post Divider = 0x24
- */
- cx18_av_write4(cx, 0x108, 0x240e040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x062a1f2 */
- /* xtal * 0xe.3150f90/0x24 = 44100 * 256: 406 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x0062a1f2);
-
- /* 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);
-
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x24 */
- cx18_av_write(cx, 0x127, 0x64);
-
- /* AUD_COUNT = 0x61ff = 49 samples * 2 * 256 - 1 */
- cx18_av_write4(cx, 0x12c, 0x112061ff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
- * ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa01d4bf8);
- break;
-
- case 48000:
- /*
- * VID_PLL Integer = 0x0f, VID_PLL Post Divider = 0x04
- * AUX_PLL Integer = 0x0d, AUX PLL Post Divider = 0x20
- */
- cx18_av_write4(cx, 0x108, 0x200d040f);
-
- /* VID_PLL Fraction = 0x2be2fe */
- /* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz pre-postdiv*/
- cx18_av_write4(cx, 0x10c, 0x002be2fe);
-
- /* AUX_PLL Fraction = 0x176740c */
- /* xtal * 0xd.bb3a060/0x20 = 48000 * 256: 393 MHz p-pd*/
- cx18_av_write4(cx, 0x110, 0x0176740c);
-
- /* 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);
-
- /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x20 */
- cx18_av_write(cx, 0x127, 0x60);
-
- /* AUD_COUNT = 0x3fff = 4 samples * 16 * 256 - 1 */
- cx18_av_write4(cx, 0x12c, 0x11203fff);
-
- /*
- * EN_AV_LOCK = 0
- * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
- * ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
- */
- cx18_av_write4(cx, 0x128, 0xa01193f8);
- 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 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 void set_bass(struct cx18 *cx, int bass)
-{
- /* PATH1_EQ_BASS_VOL */
- cx18_av_and_or(cx, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
-}
-
-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 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 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_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
-{
- struct cx18 *cx = v4l2_get_subdevdata(sd);
- struct cx18_av_state *state = &cx->av_state;
- int retval;
- 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, freq);
-
- 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;
-}
-
-static int cx18_av_audio_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct v4l2_subdev *sd = to_sd(ctrl);
- struct cx18 *cx = v4l2_get_subdevdata(sd);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_VOLUME:
- set_volume(cx, ctrl->val);
- break;
- case V4L2_CID_AUDIO_BASS:
- set_bass(cx, ctrl->val);
- break;
- case V4L2_CID_AUDIO_TREBLE:
- set_treble(cx, ctrl->val);
- break;
- case V4L2_CID_AUDIO_BALANCE:
- set_balance(cx, ctrl->val);
- break;
- case V4L2_CID_AUDIO_MUTE:
- set_mute(cx, ctrl->val);
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-const struct v4l2_ctrl_ops cx18_av_audio_ctrl_ops = {
- .s_ctrl = cx18_av_audio_s_ctrl,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-27 23:55:41 +0100