mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 22:53:55 +08:00
8bf2f8e747
Cleanup audio input handling in bttv and tvaudio: - inputs were specified that were never used - mute was handled as a special input which led to confusing code - confusing naming made it difficult to see if the setting was for i2c or gpio. The old audiochip.h input names moved to tvaudio.h. Currently this is used both by tvaudio and msp3400 until the msp3400 implements the new msp3400-specific inputs. Detect in bttv the tvaudio and msp3400 i2c clients and use these client pointers to set the inputs directly instead of broadcasting the command. Removed AUDC_SET_INPUT. Now replaced by VIDIOC_S_AUDIO. This will be replaced again later by the new ROUTING commands. Removed VIDIOC_G_AUDIO implementations in i2c drivers: this command is a user level command and not to be used internally. It wasn't called at all anyway. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
349 lines
8.7 KiB
C
349 lines
8.7 KiB
C
/* cx25840 audio functions
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <linux/videodev2.h>
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#include <linux/i2c.h>
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#include <media/v4l2-common.h>
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#include "cx25840.h"
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static int set_audclk_freq(struct i2c_client *client, u32 freq)
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{
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struct cx25840_state *state = i2c_get_clientdata(client);
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if (freq != 32000 && freq != 44100 && freq != 48000)
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return -EINVAL;
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/* assert soft reset */
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cx25840_and_or(client, 0x810, ~0x1, 0x01);
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/* common for all inputs and rates */
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/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
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cx25840_write(client, 0x127, 0x50);
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if (state->aud_input != CX25840_AUDIO_SERIAL) {
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switch (freq) {
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case 32000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040610);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0xee39bb01);
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/* src3/4/6_ctl = 0x0801f77f */
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cx25840_write4(client, 0x900, 0x7ff70108);
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cx25840_write4(client, 0x904, 0x7ff70108);
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cx25840_write4(client, 0x90c, 0x7ff70108);
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break;
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case 44100:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040910);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0xd66bec00);
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/* src3/4/6_ctl = 0x08016d59 */
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cx25840_write4(client, 0x900, 0x596d0108);
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cx25840_write4(client, 0x904, 0x596d0108);
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cx25840_write4(client, 0x90c, 0x596d0108);
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break;
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case 48000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040a10);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0xe5d69800);
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/* src3/4/6_ctl = 0x08014faa */
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cx25840_write4(client, 0x900, 0xaa4f0108);
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cx25840_write4(client, 0x904, 0xaa4f0108);
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cx25840_write4(client, 0x90c, 0xaa4f0108);
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break;
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}
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} else {
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switch (freq) {
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case 32000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f04081e);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0x69082a01);
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/* src1_ctl = 0x08010000 */
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cx25840_write4(client, 0x8f8, 0x00000108);
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/* src3/4/6_ctl = 0x08020000 */
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cx25840_write4(client, 0x900, 0x00000208);
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cx25840_write4(client, 0x904, 0x00000208);
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cx25840_write4(client, 0x90c, 0x00000208);
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/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
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cx25840_write(client, 0x127, 0x54);
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break;
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case 44100:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040918);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0xd66bec00);
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/* src1_ctl = 0x08010000 */
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cx25840_write4(client, 0x8f8, 0xcd600108);
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/* src3/4/6_ctl = 0x08020000 */
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cx25840_write4(client, 0x900, 0x85730108);
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cx25840_write4(client, 0x904, 0x85730108);
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cx25840_write4(client, 0x90c, 0x85730108);
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break;
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case 48000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040a18);
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/* AUX_PLL_FRAC */
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cx25840_write4(client, 0x110, 0xe5d69800);
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/* src1_ctl = 0x08010000 */
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cx25840_write4(client, 0x8f8, 0x00800108);
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/* src3/4/6_ctl = 0x08020000 */
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cx25840_write4(client, 0x900, 0x55550108);
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cx25840_write4(client, 0x904, 0x55550108);
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cx25840_write4(client, 0x90c, 0x55550108);
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break;
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}
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}
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/* deassert soft reset */
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cx25840_and_or(client, 0x810, ~0x1, 0x00);
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state->audclk_freq = freq;
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return 0;
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}
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void cx25840_audio_set_path(struct i2c_client *client)
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{
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struct cx25840_state *state = i2c_get_clientdata(client);
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/* stop microcontroller */
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cx25840_and_or(client, 0x803, ~0x10, 0);
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/* Mute everything to prevent the PFFT! */
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cx25840_write(client, 0x8d3, 0x1f);
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if (state->aud_input == CX25840_AUDIO_SERIAL) {
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/* Set Path1 to Serial Audio Input */
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cx25840_write4(client, 0x8d0, 0x12100101);
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/* The microcontroller should not be started for the
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* non-tuner inputs: autodetection is specific for
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* TV audio. */
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} else {
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/* Set Path1 to Analog Demod Main Channel */
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cx25840_write4(client, 0x8d0, 0x7038061f);
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/* When the microcontroller detects the
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* audio format, it will unmute the lines */
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cx25840_and_or(client, 0x803, ~0x10, 0x10);
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}
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set_audclk_freq(client, state->audclk_freq);
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}
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static int get_volume(struct i2c_client *client)
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{
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/* Volume runs +18dB to -96dB in 1/2dB steps
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* change to fit the msp3400 -114dB to +12dB range */
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/* check PATH1_VOLUME */
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int vol = 228 - cx25840_read(client, 0x8d4);
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vol = (vol / 2) + 23;
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return vol << 9;
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}
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static void set_volume(struct i2c_client *client, int volume)
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{
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/* First convert the volume to msp3400 values (0-127) */
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int vol = volume >> 9;
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/* now scale it up to cx25840 values
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* -114dB to -96dB maps to 0
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* this should be 19, but in my testing that was 4dB too loud */
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if (vol <= 23) {
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vol = 0;
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} else {
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vol -= 23;
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}
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/* PATH1_VOLUME */
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cx25840_write(client, 0x8d4, 228 - (vol * 2));
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}
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static int get_bass(struct i2c_client *client)
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{
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/* bass is 49 steps +12dB to -12dB */
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/* check PATH1_EQ_BASS_VOL */
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int bass = cx25840_read(client, 0x8d9) & 0x3f;
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bass = (((48 - bass) * 0xffff) + 47) / 48;
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return bass;
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}
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static void set_bass(struct i2c_client *client, int bass)
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{
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/* PATH1_EQ_BASS_VOL */
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cx25840_and_or(client, 0x8d9, ~0x3f, 48 - (bass * 48 / 0xffff));
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}
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static int get_treble(struct i2c_client *client)
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{
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/* treble is 49 steps +12dB to -12dB */
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/* check PATH1_EQ_TREBLE_VOL */
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int treble = cx25840_read(client, 0x8db) & 0x3f;
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treble = (((48 - treble) * 0xffff) + 47) / 48;
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return treble;
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}
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static void set_treble(struct i2c_client *client, int treble)
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{
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/* PATH1_EQ_TREBLE_VOL */
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cx25840_and_or(client, 0x8db, ~0x3f, 48 - (treble * 48 / 0xffff));
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}
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static int get_balance(struct i2c_client *client)
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{
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/* balance is 7 bit, 0 to -96dB */
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/* check PATH1_BAL_LEVEL */
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int balance = cx25840_read(client, 0x8d5) & 0x7f;
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/* check PATH1_BAL_LEFT */
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if ((cx25840_read(client, 0x8d5) & 0x80) == 0)
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balance = 0x80 - balance;
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else
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balance = 0x80 + balance;
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return balance << 8;
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}
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static void set_balance(struct i2c_client *client, int balance)
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{
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int bal = balance >> 8;
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if (bal > 0x80) {
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/* PATH1_BAL_LEFT */
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cx25840_and_or(client, 0x8d5, 0x7f, 0x80);
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/* PATH1_BAL_LEVEL */
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cx25840_and_or(client, 0x8d5, ~0x7f, bal & 0x7f);
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} else {
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/* PATH1_BAL_LEFT */
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cx25840_and_or(client, 0x8d5, 0x7f, 0x00);
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/* PATH1_BAL_LEVEL */
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cx25840_and_or(client, 0x8d5, ~0x7f, 0x80 - bal);
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}
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}
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static int get_mute(struct i2c_client *client)
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{
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/* check SRC1_MUTE_EN */
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return cx25840_read(client, 0x8d3) & 0x2 ? 1 : 0;
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}
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static void set_mute(struct i2c_client *client, int mute)
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{
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struct cx25840_state *state = i2c_get_clientdata(client);
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if (state->aud_input != CX25840_AUDIO_SERIAL) {
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/* Must turn off microcontroller in order to mute sound.
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* Not sure if this is the best method, but it does work.
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* If the microcontroller is running, then it will undo any
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* changes to the mute register. */
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if (mute) {
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/* disable microcontroller */
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cx25840_and_or(client, 0x803, ~0x10, 0x00);
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cx25840_write(client, 0x8d3, 0x1f);
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} else {
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/* enable microcontroller */
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cx25840_and_or(client, 0x803, ~0x10, 0x10);
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}
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} else {
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/* SRC1_MUTE_EN */
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cx25840_and_or(client, 0x8d3, ~0x2, mute ? 0x02 : 0x00);
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}
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}
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int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
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{
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struct v4l2_control *ctrl = arg;
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switch (cmd) {
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case VIDIOC_INT_AUDIO_CLOCK_FREQ:
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return set_audclk_freq(client, *(u32 *)arg);
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case VIDIOC_G_CTRL:
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = get_volume(client);
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break;
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case V4L2_CID_AUDIO_BASS:
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ctrl->value = get_bass(client);
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break;
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case V4L2_CID_AUDIO_TREBLE:
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ctrl->value = get_treble(client);
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break;
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case V4L2_CID_AUDIO_BALANCE:
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ctrl->value = get_balance(client);
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break;
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value = get_mute(client);
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break;
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default:
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return -EINVAL;
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}
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break;
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case VIDIOC_S_CTRL:
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_VOLUME:
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set_volume(client, ctrl->value);
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break;
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case V4L2_CID_AUDIO_BASS:
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set_bass(client, ctrl->value);
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break;
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case V4L2_CID_AUDIO_TREBLE:
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set_treble(client, ctrl->value);
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break;
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case V4L2_CID_AUDIO_BALANCE:
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set_balance(client, ctrl->value);
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break;
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case V4L2_CID_AUDIO_MUTE:
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set_mute(client, ctrl->value);
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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