496 lines
14 KiB
C
496 lines
14 KiB
C
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/*
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* sn95031.c - TI sn95031 Codec driver
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*
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* Copyright (C) 2010 Intel Corp
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* Author: Vinod Koul <vinod.koul@intel.com>
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* Author: Harsha Priya <priya.harsha@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <asm/intel_scu_ipc.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include "sn95031.h"
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#define SN95031_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100)
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#define SN95031_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
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/*
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* todo:
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* capture paths
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* jack detection
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* PM functions
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*/
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static inline unsigned int sn95031_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u8 value = 0;
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int ret;
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ret = intel_scu_ipc_ioread8(reg, &value);
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if (ret)
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pr_err("read of %x failed, err %d\n", reg, ret);
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return value;
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}
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static inline int sn95031_write(struct snd_soc_codec *codec,
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unsigned int reg, unsigned int value)
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{
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int ret;
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ret = intel_scu_ipc_iowrite8(reg, value);
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if (ret)
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pr_err("write of %x failed, err %d\n", reg, ret);
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return ret;
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}
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static int sn95031_set_vaud_bias(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
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pr_debug("vaud_bias powering up pll\n");
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/* power up the pll */
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snd_soc_write(codec, SN95031_AUDPLLCTRL, BIT(5));
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/* enable pcm 2 */
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snd_soc_update_bits(codec, SN95031_PCM2C2,
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BIT(0), BIT(0));
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}
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
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pr_debug("vaud_bias power up rail\n");
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/* power up the rail */
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snd_soc_write(codec, SN95031_VAUD,
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BIT(2)|BIT(1)|BIT(0));
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msleep(1);
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} else if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) {
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/* turn off pcm */
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pr_debug("vaud_bias power dn pcm\n");
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snd_soc_update_bits(codec, SN95031_PCM2C2, BIT(0), 0);
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snd_soc_write(codec, SN95031_AUDPLLCTRL, 0);
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}
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break;
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case SND_SOC_BIAS_OFF:
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pr_debug("vaud_bias _OFF doing rail shutdown\n");
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snd_soc_write(codec, SN95031_VAUD, BIT(3));
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break;
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}
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codec->dapm.bias_level = level;
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return 0;
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}
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static int sn95031_vhs_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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if (SND_SOC_DAPM_EVENT_ON(event)) {
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pr_debug("VHS SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
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/* power up the rail */
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snd_soc_write(w->codec, SN95031_VHSP, 0x3D);
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snd_soc_write(w->codec, SN95031_VHSN, 0x3F);
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msleep(1);
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} else if (SND_SOC_DAPM_EVENT_OFF(event)) {
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pr_debug("VHS SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
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snd_soc_write(w->codec, SN95031_VHSP, 0xC4);
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snd_soc_write(w->codec, SN95031_VHSN, 0x04);
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}
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return 0;
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}
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static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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if (SND_SOC_DAPM_EVENT_ON(event)) {
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pr_debug("VIHF SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
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/* power up the rail */
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snd_soc_write(w->codec, SN95031_VIHF, 0x27);
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msleep(1);
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} else if (SND_SOC_DAPM_EVENT_OFF(event)) {
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pr_debug("VIHF SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
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snd_soc_write(w->codec, SN95031_VIHF, 0x24);
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}
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return 0;
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}
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/* DAPM widgets */
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static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
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/* all end points mic, hs etc */
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SND_SOC_DAPM_OUTPUT("HPOUTL"),
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SND_SOC_DAPM_OUTPUT("HPOUTR"),
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SND_SOC_DAPM_OUTPUT("EPOUT"),
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SND_SOC_DAPM_OUTPUT("IHFOUTL"),
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SND_SOC_DAPM_OUTPUT("IHFOUTR"),
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SND_SOC_DAPM_OUTPUT("LINEOUTL"),
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SND_SOC_DAPM_OUTPUT("LINEOUTR"),
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SND_SOC_DAPM_OUTPUT("VIB1OUT"),
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SND_SOC_DAPM_OUTPUT("VIB2OUT"),
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SND_SOC_DAPM_SUPPLY("Headset Rail", SND_SOC_NOPM, 0, 0,
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sn95031_vhs_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("Speaker Rail", SND_SOC_NOPM, 0, 0,
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sn95031_vihf_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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/* playback path driver enables */
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SND_SOC_DAPM_PGA("Headset Left Playback",
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SN95031_DRIVEREN, 0, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Headset Right Playback",
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SN95031_DRIVEREN, 1, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Speaker Left Playback",
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SN95031_DRIVEREN, 2, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Speaker Right Playback",
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SN95031_DRIVEREN, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Vibra1 Playback",
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SN95031_DRIVEREN, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Vibra2 Playback",
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SN95031_DRIVEREN, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Earpiece Playback",
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SN95031_DRIVEREN, 6, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Lineout Left Playback",
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SN95031_LOCTL, 0, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Lineout Right Playback",
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SN95031_LOCTL, 4, 0, NULL, 0),
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/* playback path filter enable */
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SND_SOC_DAPM_PGA("Headset Left Filter",
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SN95031_HSEPRXCTRL, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Headset Right Filter",
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SN95031_HSEPRXCTRL, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Speaker Left Filter",
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SN95031_IHFRXCTRL, 0, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Speaker Right Filter",
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SN95031_IHFRXCTRL, 1, 0, NULL, 0),
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/* DACs */
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SND_SOC_DAPM_DAC("HSDAC Left", "Headset",
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SN95031_DACCONFIG, 0, 0),
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SND_SOC_DAPM_DAC("HSDAC Right", "Headset",
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SN95031_DACCONFIG, 1, 0),
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SND_SOC_DAPM_DAC("IHFDAC Left", "Speaker",
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SN95031_DACCONFIG, 2, 0),
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SND_SOC_DAPM_DAC("IHFDAC Right", "Speaker",
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SN95031_DACCONFIG, 3, 0),
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SND_SOC_DAPM_DAC("Vibra1 DAC", "Vibra1",
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SN95031_VIB1C5, 1, 0),
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SND_SOC_DAPM_DAC("Vibra2 DAC", "Vibra2",
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SN95031_VIB2C5, 1, 0),
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};
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static const struct snd_soc_dapm_route sn95031_audio_map[] = {
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/* headset and earpiece map */
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{ "HPOUTL", NULL, "Headset Left Playback" },
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{ "HPOUTR", NULL, "Headset Right Playback" },
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{ "EPOUT", NULL, "Earpiece Playback" },
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{ "Headset Left Playback", NULL, "Headset Left Filter"},
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{ "Headset Right Playback", NULL, "Headset Right Filter"},
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{ "Earpiece Playback", NULL, "Headset Left Filter"},
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{ "Headset Left Filter", NULL, "HSDAC Left"},
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{ "Headset Right Filter", NULL, "HSDAC Right"},
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{ "HSDAC Left", NULL, "Headset Rail"},
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{ "HSDAC Right", NULL, "Headset Rail"},
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/* speaker map */
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{ "IHFOUTL", "NULL", "Speaker Left Playback"},
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{ "IHFOUTR", "NULL", "Speaker Right Playback"},
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{ "Speaker Left Playback", NULL, "Speaker Left Filter"},
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{ "Speaker Right Playback", NULL, "Speaker Right Filter"},
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{ "Speaker Left Filter", NULL, "IHFDAC Left"},
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{ "Speaker Right Filter", NULL, "IHFDAC Right"},
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{ "IHFDAC Left", NULL, "Speaker Rail"},
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{ "IHFDAC Right", NULL, "Speaker Rail"},
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/* vibra map */
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{"VIB1OUT", NULL, "Vibra1 Playback"},
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{"Vibra1 Playback", NULL, "Vibra1 DAC"},
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{"VIB2OUT", NULL, "Vibra2 Playback"},
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{"Vibra2 Playback", NULL, "Vibra2 DAC"},
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/* lineout */
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{"LINEOUTL", NULL, "Lineout Left Playback"},
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{"LINEOUTR", NULL, "Lineout Right Playback"},
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{"Lineout Left Playback", NULL, "Headset Left Filter"},
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{"Lineout Left Playback", NULL, "Speaker Left Filter"},
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{"Lineout Left Playback", NULL, "Vibra1 DAC"},
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{"Lineout Right Playback", NULL, "Headset Right Filter"},
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{"Lineout Right Playback", NULL, "Speaker Right Filter"},
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{"Lineout Right Playback", NULL, "Vibra2 DAC"},
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};
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/* speaker and headset mutes, for audio pops and clicks */
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static int sn95031_pcm_hs_mute(struct snd_soc_dai *dai, int mute)
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{
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snd_soc_update_bits(dai->codec,
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SN95031_HSLVOLCTRL, BIT(7), (!mute << 7));
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snd_soc_update_bits(dai->codec,
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SN95031_HSRVOLCTRL, BIT(7), (!mute << 7));
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return 0;
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}
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static int sn95031_pcm_spkr_mute(struct snd_soc_dai *dai, int mute)
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{
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snd_soc_update_bits(dai->codec,
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SN95031_IHFLVOLCTRL, BIT(7), (!mute << 7));
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snd_soc_update_bits(dai->codec,
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SN95031_IHFRVOLCTRL, BIT(7), (!mute << 7));
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return 0;
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}
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int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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unsigned int format, rate;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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format = BIT(4)|BIT(5);
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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format = 0;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(dai->codec, SN95031_PCM2C2,
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BIT(4)|BIT(5), format);
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switch (params_rate(params)) {
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case 48000:
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pr_debug("RATE_48000\n");
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rate = 0;
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break;
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case 44100:
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pr_debug("RATE_44100\n");
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rate = BIT(7);
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break;
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default:
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pr_err("ERR rate %d\n", params_rate(params));
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return -EINVAL;
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}
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snd_soc_update_bits(dai->codec, SN95031_PCM1C1, BIT(7), rate);
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return 0;
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}
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/* Codec DAI section */
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static struct snd_soc_dai_ops sn95031_headset_dai_ops = {
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.digital_mute = sn95031_pcm_hs_mute,
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.hw_params = sn95031_pcm_hw_params,
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};
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static struct snd_soc_dai_ops sn95031_speaker_dai_ops = {
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.digital_mute = sn95031_pcm_spkr_mute,
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.hw_params = sn95031_pcm_hw_params,
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};
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static struct snd_soc_dai_ops sn95031_vib1_dai_ops = {
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.hw_params = sn95031_pcm_hw_params,
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};
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static struct snd_soc_dai_ops sn95031_vib2_dai_ops = {
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.hw_params = sn95031_pcm_hw_params,
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};
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struct snd_soc_dai_driver sn95031_dais[] = {
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{
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.name = "SN95031 Headset",
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.playback = {
|
||
|
|
.stream_name = "Headset",
|
||
|
|
.channels_min = 2,
|
||
|
|
.channels_max = 2,
|
||
|
|
.rates = SN95031_RATES,
|
||
|
|
.formats = SN95031_FORMATS,
|
||
|
|
},
|
||
|
|
.ops = &sn95031_headset_dai_ops,
|
||
|
|
},
|
||
|
|
{ .name = "SN95031 Speaker",
|
||
|
|
.playback = {
|
||
|
|
.stream_name = "Speaker",
|
||
|
|
.channels_min = 2,
|
||
|
|
.channels_max = 2,
|
||
|
|
.rates = SN95031_RATES,
|
||
|
|
.formats = SN95031_FORMATS,
|
||
|
|
},
|
||
|
|
.ops = &sn95031_speaker_dai_ops,
|
||
|
|
},
|
||
|
|
{ .name = "SN95031 Vibra1",
|
||
|
|
.playback = {
|
||
|
|
.stream_name = "Vibra1",
|
||
|
|
.channels_min = 1,
|
||
|
|
.channels_max = 1,
|
||
|
|
.rates = SN95031_RATES,
|
||
|
|
.formats = SN95031_FORMATS,
|
||
|
|
},
|
||
|
|
.ops = &sn95031_vib1_dai_ops,
|
||
|
|
},
|
||
|
|
{ .name = "SN95031 Vibra2",
|
||
|
|
.playback = {
|
||
|
|
.stream_name = "Vibra2",
|
||
|
|
.channels_min = 1,
|
||
|
|
.channels_max = 1,
|
||
|
|
.rates = SN95031_RATES,
|
||
|
|
.formats = SN95031_FORMATS,
|
||
|
|
},
|
||
|
|
.ops = &sn95031_vib2_dai_ops,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
/* codec registration */
|
||
|
|
static int sn95031_codec_probe(struct snd_soc_codec *codec)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
pr_debug("codec_probe called\n");
|
||
|
|
|
||
|
|
codec->dapm.bias_level = SND_SOC_BIAS_OFF;
|
||
|
|
codec->dapm.idle_bias_off = 1;
|
||
|
|
|
||
|
|
/* PCM interface config
|
||
|
|
* This sets the pcm rx slot conguration to max 6 slots
|
||
|
|
* for max 4 dais (2 stereo and 2 mono)
|
||
|
|
*/
|
||
|
|
snd_soc_write(codec, SN95031_PCM2RXSLOT01, 0x10);
|
||
|
|
snd_soc_write(codec, SN95031_PCM2RXSLOT23, 0x32);
|
||
|
|
snd_soc_write(codec, SN95031_PCM2RXSLOT45, 0x54);
|
||
|
|
/* pcm port setting
|
||
|
|
* This sets the pcm port to slave and clock at 19.2Mhz which
|
||
|
|
* can support 6slots, sampling rate set per stream in hw-params
|
||
|
|
*/
|
||
|
|
snd_soc_write(codec, SN95031_PCM1C1, 0x00);
|
||
|
|
snd_soc_write(codec, SN95031_PCM2C1, 0x01);
|
||
|
|
snd_soc_write(codec, SN95031_PCM2C2, 0x0A);
|
||
|
|
snd_soc_write(codec, SN95031_HSMIXER, BIT(0)|BIT(4));
|
||
|
|
/* vendor vibra workround, the vibras are muted by
|
||
|
|
* custom register so unmute them
|
||
|
|
*/
|
||
|
|
snd_soc_write(codec, SN95031_SSR5, 0x80);
|
||
|
|
snd_soc_write(codec, SN95031_SSR6, 0x80);
|
||
|
|
snd_soc_write(codec, SN95031_VIB1C5, 0x00);
|
||
|
|
snd_soc_write(codec, SN95031_VIB2C5, 0x00);
|
||
|
|
/* configure vibras for pcm port */
|
||
|
|
snd_soc_write(codec, SN95031_VIB1C3, 0x00);
|
||
|
|
snd_soc_write(codec, SN95031_VIB2C3, 0x00);
|
||
|
|
|
||
|
|
/* soft mute ramp time */
|
||
|
|
snd_soc_write(codec, SN95031_SOFTMUTE, 0x3);
|
||
|
|
/* fix the initial volume at 1dB,
|
||
|
|
* default in +9dB,
|
||
|
|
* 1dB give optimal swing on DAC, amps
|
||
|
|
*/
|
||
|
|
snd_soc_write(codec, SN95031_HSLVOLCTRL, 0x08);
|
||
|
|
snd_soc_write(codec, SN95031_HSRVOLCTRL, 0x08);
|
||
|
|
snd_soc_write(codec, SN95031_IHFLVOLCTRL, 0x08);
|
||
|
|
snd_soc_write(codec, SN95031_IHFRVOLCTRL, 0x08);
|
||
|
|
/* dac mode and lineout workaround */
|
||
|
|
snd_soc_write(codec, SN95031_SSR2, 0x10);
|
||
|
|
snd_soc_write(codec, SN95031_SSR3, 0x40);
|
||
|
|
|
||
|
|
ret = snd_soc_dapm_new_controls(&codec->dapm, sn95031_dapm_widgets,
|
||
|
|
ARRAY_SIZE(sn95031_dapm_widgets));
|
||
|
|
if (ret)
|
||
|
|
pr_err("soc_dapm_new_control failed %d", ret);
|
||
|
|
ret = snd_soc_dapm_add_routes(&codec->dapm, sn95031_audio_map,
|
||
|
|
ARRAY_SIZE(sn95031_audio_map));
|
||
|
|
if (ret)
|
||
|
|
pr_err("soc_dapm_add_routes failed %d", ret);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int sn95031_codec_remove(struct snd_soc_codec *codec)
|
||
|
|
{
|
||
|
|
pr_debug("codec_remove called\n");
|
||
|
|
sn95031_set_vaud_bias(codec, SND_SOC_BIAS_OFF);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct snd_soc_codec_driver sn95031_codec = {
|
||
|
|
.probe = sn95031_codec_probe,
|
||
|
|
.remove = sn95031_codec_remove,
|
||
|
|
.read = sn95031_read,
|
||
|
|
.write = sn95031_write,
|
||
|
|
.set_bias_level = sn95031_set_vaud_bias,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __devinit sn95031_device_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
pr_debug("codec device probe called for %s\n", dev_name(&pdev->dev));
|
||
|
|
return snd_soc_register_codec(&pdev->dev, &sn95031_codec,
|
||
|
|
sn95031_dais, ARRAY_SIZE(sn95031_dais));
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __devexit sn95031_device_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
pr_debug("codec device remove called\n");
|
||
|
|
snd_soc_unregister_codec(&pdev->dev);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct platform_driver sn95031_codec_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "sn95031",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
},
|
||
|
|
.probe = sn95031_device_probe,
|
||
|
|
.remove = sn95031_device_remove,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init sn95031_init(void)
|
||
|
|
{
|
||
|
|
pr_debug("driver init called\n");
|
||
|
|
return platform_driver_register(&sn95031_codec_driver);
|
||
|
|
}
|
||
|
|
module_init(sn95031_init);
|
||
|
|
|
||
|
|
static void __exit sn95031_exit(void)
|
||
|
|
{
|
||
|
|
pr_debug("driver exit called\n");
|
||
|
|
platform_driver_unregister(&sn95031_codec_driver);
|
||
|
|
}
|
||
|
|
module_exit(sn95031_exit);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("ASoC Intel(R) SN95031 codec driver");
|
||
|
|
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
|
||
|
|
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
|
||
|
|
MODULE_LICENSE("GPL v2");
|
||
|
|
MODULE_ALIAS("platform:sn95031");
|