--- /dev/null
+/*
+ * sn95031.c - TI sn95031 Codec driver
+ *
+ * Copyright (C) 2010 Intel Corp
+ * Author: Vinod Koul <vinod.koul@intel.com>
+ * Author: Harsha Priya <priya.harsha@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <asm/intel_scu_ipc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include "sn95031.h"
+
+#define SN95031_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100)
+#define SN95031_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
+
+/*
+ * todo:
+ * capture paths
+ * jack detection
+ * PM functions
+ */
+
+static inline unsigned int sn95031_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ u8 value = 0;
+ int ret;
+
+ ret = intel_scu_ipc_ioread8(reg, &value);
+ if (ret)
+ pr_err("read of %x failed, err %d\n", reg, ret);
+ return value;
+
+}
+
+static inline int sn95031_write(struct snd_soc_codec *codec,
+ unsigned int reg, unsigned int value)
+{
+ int ret;
+
+ ret = intel_scu_ipc_iowrite8(reg, value);
+ if (ret)
+ pr_err("write of %x failed, err %d\n", reg, ret);
+ return ret;
+}
+
+static int sn95031_set_vaud_bias(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
+ pr_debug("vaud_bias powering up pll\n");
+ /* power up the pll */
+ snd_soc_write(codec, SN95031_AUDPLLCTRL, BIT(5));
+ /* enable pcm 2 */
+ snd_soc_update_bits(codec, SN95031_PCM2C2,
+ BIT(0), BIT(0));
+ }
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+ pr_debug("vaud_bias power up rail\n");
+ /* power up the rail */
+ snd_soc_write(codec, SN95031_VAUD,
+ BIT(2)|BIT(1)|BIT(0));
+ msleep(1);
+ } else if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) {
+ /* turn off pcm */
+ pr_debug("vaud_bias power dn pcm\n");
+ snd_soc_update_bits(codec, SN95031_PCM2C2, BIT(0), 0);
+ snd_soc_write(codec, SN95031_AUDPLLCTRL, 0);
+ }
+ break;
+
+
+ case SND_SOC_BIAS_OFF:
+ pr_debug("vaud_bias _OFF doing rail shutdown\n");
+ snd_soc_write(codec, SN95031_VAUD, BIT(3));
+ break;
+ }
+
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+static int sn95031_vhs_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event)) {
+ pr_debug("VHS SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
+ /* power up the rail */
+ snd_soc_write(w->codec, SN95031_VHSP, 0x3D);
+ snd_soc_write(w->codec, SN95031_VHSN, 0x3F);
+ msleep(1);
+ } else if (SND_SOC_DAPM_EVENT_OFF(event)) {
+ pr_debug("VHS SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
+ snd_soc_write(w->codec, SN95031_VHSP, 0xC4);
+ snd_soc_write(w->codec, SN95031_VHSN, 0x04);
+ }
+ return 0;
+}
+
+static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event)) {
+ pr_debug("VIHF SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
+ /* power up the rail */
+ snd_soc_write(w->codec, SN95031_VIHF, 0x27);
+ msleep(1);
+ } else if (SND_SOC_DAPM_EVENT_OFF(event)) {
+ pr_debug("VIHF SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
+ snd_soc_write(w->codec, SN95031_VIHF, 0x24);
+ }
+ return 0;
+}
+
+/* DAPM widgets */
+static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
+
+ /* all end points mic, hs etc */
+ SND_SOC_DAPM_OUTPUT("HPOUTL"),
+ SND_SOC_DAPM_OUTPUT("HPOUTR"),
+ SND_SOC_DAPM_OUTPUT("EPOUT"),
+ SND_SOC_DAPM_OUTPUT("IHFOUTL"),
+ SND_SOC_DAPM_OUTPUT("IHFOUTR"),
+ SND_SOC_DAPM_OUTPUT("LINEOUTL"),
+ SND_SOC_DAPM_OUTPUT("LINEOUTR"),
+ SND_SOC_DAPM_OUTPUT("VIB1OUT"),
+ SND_SOC_DAPM_OUTPUT("VIB2OUT"),
+
+ SND_SOC_DAPM_SUPPLY("Headset Rail", SND_SOC_NOPM, 0, 0,
+ sn95031_vhs_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SUPPLY("Speaker Rail", SND_SOC_NOPM, 0, 0,
+ sn95031_vihf_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+ /* playback path driver enables */
+ SND_SOC_DAPM_PGA("Headset Left Playback",
+ SN95031_DRIVEREN, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Headset Right Playback",
+ SN95031_DRIVEREN, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Speaker Left Playback",
+ SN95031_DRIVEREN, 2, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Speaker Right Playback",
+ SN95031_DRIVEREN, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Vibra1 Playback",
+ SN95031_DRIVEREN, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Vibra2 Playback",
+ SN95031_DRIVEREN, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Earpiece Playback",
+ SN95031_DRIVEREN, 6, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Lineout Left Playback",
+ SN95031_LOCTL, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Lineout Right Playback",
+ SN95031_LOCTL, 4, 0, NULL, 0),
+
+ /* playback path filter enable */
+ SND_SOC_DAPM_PGA("Headset Left Filter",
+ SN95031_HSEPRXCTRL, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Headset Right Filter",
+ SN95031_HSEPRXCTRL, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Speaker Left Filter",
+ SN95031_IHFRXCTRL, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Speaker Right Filter",
+ SN95031_IHFRXCTRL, 1, 0, NULL, 0),
+
+ /* DACs */
+ SND_SOC_DAPM_DAC("HSDAC Left", "Headset",
+ SN95031_DACCONFIG, 0, 0),
+ SND_SOC_DAPM_DAC("HSDAC Right", "Headset",
+ SN95031_DACCONFIG, 1, 0),
+ SND_SOC_DAPM_DAC("IHFDAC Left", "Speaker",
+ SN95031_DACCONFIG, 2, 0),
+ SND_SOC_DAPM_DAC("IHFDAC Right", "Speaker",
+ SN95031_DACCONFIG, 3, 0),
+ SND_SOC_DAPM_DAC("Vibra1 DAC", "Vibra1",
+ SN95031_VIB1C5, 1, 0),
+ SND_SOC_DAPM_DAC("Vibra2 DAC", "Vibra2",
+ SN95031_VIB2C5, 1, 0),
+};
+
+static const struct snd_soc_dapm_route sn95031_audio_map[] = {
+ /* headset and earpiece map */
+ { "HPOUTL", NULL, "Headset Left Playback" },
+ { "HPOUTR", NULL, "Headset Right Playback" },
+ { "EPOUT", NULL, "Earpiece Playback" },
+ { "Headset Left Playback", NULL, "Headset Left Filter"},
+ { "Headset Right Playback", NULL, "Headset Right Filter"},
+ { "Earpiece Playback", NULL, "Headset Left Filter"},
+ { "Headset Left Filter", NULL, "HSDAC Left"},
+ { "Headset Right Filter", NULL, "HSDAC Right"},
+ { "HSDAC Left", NULL, "Headset Rail"},
+ { "HSDAC Right", NULL, "Headset Rail"},
+
+ /* speaker map */
+ { "IHFOUTL", "NULL", "Speaker Left Playback"},
+ { "IHFOUTR", "NULL", "Speaker Right Playback"},
+ { "Speaker Left Playback", NULL, "Speaker Left Filter"},
+ { "Speaker Right Playback", NULL, "Speaker Right Filter"},
+ { "Speaker Left Filter", NULL, "IHFDAC Left"},
+ { "Speaker Right Filter", NULL, "IHFDAC Right"},
+ { "IHFDAC Left", NULL, "Speaker Rail"},
+ { "IHFDAC Right", NULL, "Speaker Rail"},
+
+ /* vibra map */
+ {"VIB1OUT", NULL, "Vibra1 Playback"},
+ {"Vibra1 Playback", NULL, "Vibra1 DAC"},
+
+ {"VIB2OUT", NULL, "Vibra2 Playback"},
+ {"Vibra2 Playback", NULL, "Vibra2 DAC"},
+
+ /* lineout */
+ {"LINEOUTL", NULL, "Lineout Left Playback"},
+ {"LINEOUTR", NULL, "Lineout Right Playback"},
+ {"Lineout Left Playback", NULL, "Headset Left Filter"},
+ {"Lineout Left Playback", NULL, "Speaker Left Filter"},
+ {"Lineout Left Playback", NULL, "Vibra1 DAC"},
+ {"Lineout Right Playback", NULL, "Headset Right Filter"},
+ {"Lineout Right Playback", NULL, "Speaker Right Filter"},
+ {"Lineout Right Playback", NULL, "Vibra2 DAC"},
+};
+
+/* speaker and headset mutes, for audio pops and clicks */
+static int sn95031_pcm_hs_mute(struct snd_soc_dai *dai, int mute)
+{
+ snd_soc_update_bits(dai->codec,
+ SN95031_HSLVOLCTRL, BIT(7), (!mute << 7));
+ snd_soc_update_bits(dai->codec,
+ SN95031_HSRVOLCTRL, BIT(7), (!mute << 7));
+ return 0;
+}
+
+static int sn95031_pcm_spkr_mute(struct snd_soc_dai *dai, int mute)
+{
+ snd_soc_update_bits(dai->codec,
+ SN95031_IHFLVOLCTRL, BIT(7), (!mute << 7));
+ snd_soc_update_bits(dai->codec,
+ SN95031_IHFRVOLCTRL, BIT(7), (!mute << 7));
+ return 0;
+}
+
+int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ unsigned int format, rate;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ format = BIT(4)|BIT(5);
+ break;
+
+ case SNDRV_PCM_FORMAT_S24_LE:
+ format = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ snd_soc_update_bits(dai->codec, SN95031_PCM2C2,
+ BIT(4)|BIT(5), format);
+
+ switch (params_rate(params)) {
+ case 48000:
+ pr_debug("RATE_48000\n");
+ rate = 0;
+ break;
+
+ case 44100:
+ pr_debug("RATE_44100\n");
+ rate = BIT(7);
+ break;
+
+ default:
+ pr_err("ERR rate %d\n", params_rate(params));
+ return -EINVAL;
+ }
+ snd_soc_update_bits(dai->codec, SN95031_PCM1C1, BIT(7), rate);
+
+ return 0;
+}
+
+/* Codec DAI section */
+static struct snd_soc_dai_ops sn95031_headset_dai_ops = {
+ .digital_mute = sn95031_pcm_hs_mute,
+ .hw_params = sn95031_pcm_hw_params,
+};
+
+static struct snd_soc_dai_ops sn95031_speaker_dai_ops = {
+ .digital_mute = sn95031_pcm_spkr_mute,
+ .hw_params = sn95031_pcm_hw_params,
+};
+
+static struct snd_soc_dai_ops sn95031_vib1_dai_ops = {
+ .hw_params = sn95031_pcm_hw_params,
+};
+
+static struct snd_soc_dai_ops sn95031_vib2_dai_ops = {
+ .hw_params = sn95031_pcm_hw_params,
+};
+
+struct snd_soc_dai_driver sn95031_dais[] = {
+{
+ .name = "SN95031 Headset",
+ .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");
projects / platform / kernel / linux-3.10.git / commitdiff