diff options
Diffstat (limited to 'sound/soc/codecs/wm9090.c')
| -rw-r--r-- | sound/soc/codecs/wm9090.c | 773 |
1 files changed, 773 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm9090.c b/sound/soc/codecs/wm9090.c new file mode 100644 index 000000000000..1592250daec0 --- /dev/null +++ b/sound/soc/codecs/wm9090.c @@ -0,0 +1,773 @@ +/* + * ALSA SoC WM9090 driver + * + * Copyright 2009, 2010 Wolfson Microelectronics + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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 St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <sound/initval.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> +#include <sound/wm9090.h> + +#include "wm9090.h" + +static struct snd_soc_codec *wm9090_codec; + +static const u16 wm9090_reg_defaults[] = { + 0x9093, /* R0 - Software Reset */ + 0x0006, /* R1 - Power Management (1) */ + 0x6000, /* R2 - Power Management (2) */ + 0x0000, /* R3 - Power Management (3) */ + 0x0000, /* R4 */ + 0x0000, /* R5 */ + 0x01C0, /* R6 - Clocking 1 */ + 0x0000, /* R7 */ + 0x0000, /* R8 */ + 0x0000, /* R9 */ + 0x0000, /* R10 */ + 0x0000, /* R11 */ + 0x0000, /* R12 */ + 0x0000, /* R13 */ + 0x0000, /* R14 */ + 0x0000, /* R15 */ + 0x0000, /* R16 */ + 0x0000, /* R17 */ + 0x0000, /* R18 */ + 0x0000, /* R19 */ + 0x0000, /* R20 */ + 0x0000, /* R21 */ + 0x0003, /* R22 - IN1 Line Control */ + 0x0003, /* R23 - IN2 Line Control */ + 0x0083, /* R24 - IN1 Line Input A Volume */ + 0x0083, /* R25 - IN1 Line Input B Volume */ + 0x0083, /* R26 - IN2 Line Input A Volume */ + 0x0083, /* R27 - IN2 Line Input B Volume */ + 0x002D, /* R28 - Left Output Volume */ + 0x002D, /* R29 - Right Output Volume */ + 0x0000, /* R30 */ + 0x0000, /* R31 */ + 0x0000, /* R32 */ + 0x0000, /* R33 */ + 0x0100, /* R34 - SPKMIXL Attenuation */ + 0x0000, /* R35 */ + 0x0010, /* R36 - SPKOUT Mixers */ + 0x0140, /* R37 - ClassD3 */ + 0x0039, /* R38 - Speaker Volume Left */ + 0x0000, /* R39 */ + 0x0000, /* R40 */ + 0x0000, /* R41 */ + 0x0000, /* R42 */ + 0x0000, /* R43 */ + 0x0000, /* R44 */ + 0x0000, /* R45 - Output Mixer1 */ + 0x0000, /* R46 - Output Mixer2 */ + 0x0100, /* R47 - Output Mixer3 */ + 0x0100, /* R48 - Output Mixer4 */ + 0x0000, /* R49 */ + 0x0000, /* R50 */ + 0x0000, /* R51 */ + 0x0000, /* R52 */ + 0x0000, /* R53 */ + 0x0000, /* R54 - Speaker Mixer */ + 0x0000, /* R55 */ + 0x0000, /* R56 */ + 0x000D, /* R57 - AntiPOP2 */ + 0x0000, /* R58 */ + 0x0000, /* R59 */ + 0x0000, /* R60 */ + 0x0000, /* R61 */ + 0x0000, /* R62 */ + 0x0000, /* R63 */ + 0x0000, /* R64 */ + 0x0000, /* R65 */ + 0x0000, /* R66 */ + 0x0000, /* R67 */ + 0x0000, /* R68 */ + 0x0000, /* R69 */ + 0x0000, /* R70 - Write Sequencer 0 */ + 0x0000, /* R71 - Write Sequencer 1 */ + 0x0000, /* R72 - Write Sequencer 2 */ + 0x0000, /* R73 - Write Sequencer 3 */ + 0x0000, /* R74 - Write Sequencer 4 */ + 0x0000, /* R75 - Write Sequencer 5 */ + 0x1F25, /* R76 - Charge Pump 1 */ + 0x0000, /* R77 */ + 0x0000, /* R78 */ + 0x0000, /* R79 */ + 0x0000, /* R80 */ + 0x0000, /* R81 */ + 0x0000, /* R82 */ + 0x0000, /* R83 */ + 0x0000, /* R84 - DC Servo 0 */ + 0x054A, /* R85 - DC Servo 1 */ + 0x0000, /* R86 */ + 0x0000, /* R87 - DC Servo 3 */ + 0x0000, /* R88 - DC Servo Readback 0 */ + 0x0000, /* R89 - DC Servo Readback 1 */ + 0x0000, /* R90 - DC Servo Readback 2 */ + 0x0000, /* R91 */ + 0x0000, /* R92 */ + 0x0000, /* R93 */ + 0x0000, /* R94 */ + 0x0000, /* R95 */ + 0x0100, /* R96 - Analogue HP 0 */ + 0x0000, /* R97 */ + 0x8640, /* R98 - AGC Control 0 */ + 0xC000, /* R99 - AGC Control 1 */ + 0x0200, /* R100 - AGC Control 2 */ +}; + +/* This struct is used to save the context */ +struct wm9090_priv { + /* We're not really registering as a CODEC since ASoC core + * does not yet support multiple CODECs but having the CODEC + * structure means we can reuse some of the ASoC core + * features. + */ + struct snd_soc_codec codec; + struct mutex mutex; + u16 reg_cache[WM9090_MAX_REGISTER + 1]; + struct wm9090_platform_data pdata; +}; + +static int wm9090_volatile(unsigned int reg) +{ + switch (reg) { + case WM9090_SOFTWARE_RESET: + case WM9090_DC_SERVO_0: + case WM9090_DC_SERVO_READBACK_0: + case WM9090_DC_SERVO_READBACK_1: + case WM9090_DC_SERVO_READBACK_2: + return 1; + + default: + return 0; + } +} + +static void wait_for_dc_servo(struct snd_soc_codec *codec) +{ + unsigned int reg; + int count = 0; + + dev_dbg(codec->dev, "Waiting for DC servo...\n"); + do { + count++; + msleep(1); + reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0); + dev_dbg(codec->dev, "DC servo status: %x\n", reg); + } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK) + != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000); + + if ((reg & WM9090_DCS_CAL_COMPLETE_MASK) + != WM9090_DCS_CAL_COMPLETE_MASK) + dev_err(codec->dev, "Timed out waiting for DC Servo\n"); +} + +static const unsigned int in_tlv[] = { + TLV_DB_RANGE_HEAD(6), + 0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0), + 1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0), + 4, 6, TLV_DB_SCALE_ITEM(600, 600, 0), +}; +static const unsigned int mix_tlv[] = { + TLV_DB_RANGE_HEAD(4), + 0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0), + 3, 3, TLV_DB_SCALE_ITEM(0, 0, 0), +}; +static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); +static const unsigned int spkboost_tlv[] = { + TLV_DB_RANGE_HEAD(7), + 0, 6, TLV_DB_SCALE_ITEM(0, 150, 0), + 7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0), +}; + +static const struct snd_kcontrol_new wm9090_controls[] = { +SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1), +SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1), +SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0), + +SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1), +SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1, + mix_tlv), + +SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1), +SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1, + mix_tlv), + +SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1), +SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1, + mix_tlv), + +SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv), +SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1), +SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0), + +SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0, + out_tlv), +SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1), +SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0), +SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv), +}; + +static const struct snd_kcontrol_new wm9090_in1_se_controls[] = { +SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1), +SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1, + mix_tlv), +}; + +static const struct snd_kcontrol_new wm9090_in2_se_controls[] = { +SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1), +SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1, + mix_tlv), +}; + +static int hp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = w->codec; + unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1, + WM9090_CP_ENA, WM9090_CP_ENA); + + msleep(5); + + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA); + + reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY; + snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); + + /* Start the DC servo. We don't currently use the + * ability to save the state since we don't have full + * control of the analogue paths and they can change + * DC offsets; see the WM8904 driver for an example of + * doing so. + */ + snd_soc_write(codec, WM9090_DC_SERVO_0, + WM9090_DCS_ENA_CHAN_0 | + WM9090_DCS_ENA_CHAN_1 | + WM9090_DCS_TRIG_STARTUP_1 | + WM9090_DCS_TRIG_STARTUP_0); + wait_for_dc_servo(codec); + + reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT | + WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT; + snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); + break; + + case SND_SOC_DAPM_PRE_PMD: + reg &= ~(WM9090_HPOUT1L_RMV_SHORT | + WM9090_HPOUT1L_DLY | + WM9090_HPOUT1L_OUTP | + WM9090_HPOUT1R_RMV_SHORT | + WM9090_HPOUT1R_DLY | + WM9090_HPOUT1R_OUTP); + + snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); + + snd_soc_write(codec, WM9090_DC_SERVO_0, 0); + + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, + 0); + + snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1, + WM9090_CP_ENA, 0); + break; + } + + return 0; +} + +static const struct snd_kcontrol_new spkmix[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0), +}; + +static const struct snd_kcontrol_new spkout[] = { +SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0), +}; + +static const struct snd_kcontrol_new mixoutl[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0), +}; + +static const struct snd_kcontrol_new mixoutr[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0), +}; + +static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = { +SND_SOC_DAPM_INPUT("IN1+"), +SND_SOC_DAPM_INPUT("IN1-"), +SND_SOC_DAPM_INPUT("IN2+"), +SND_SOC_DAPM_INPUT("IN2-"), + +SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0), + +SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0), + +SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0, + spkmix, ARRAY_SIZE(spkmix)), +SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0, + mixoutl, ARRAY_SIZE(mixoutl)), +SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0, + mixoutr, ARRAY_SIZE(mixoutr)), + +SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0, + hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + +SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0), +SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0, + spkout, ARRAY_SIZE(spkout)), + +SND_SOC_DAPM_OUTPUT("HPR"), +SND_SOC_DAPM_OUTPUT("HPL"), +SND_SOC_DAPM_OUTPUT("Speaker"), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + { "IN1A PGA", NULL, "IN1+" }, + { "IN2A PGA", NULL, "IN2+" }, + + { "SPKMIX", "IN1A Switch", "IN1A PGA" }, + { "SPKMIX", "IN2A Switch", "IN2A PGA" }, + + { "MIXOUTL", "IN1A Switch", "IN1A PGA" }, + { "MIXOUTL", "IN2A Switch", "IN2A PGA" }, + + { "MIXOUTR", "IN1A Switch", "IN1A PGA" }, + { "MIXOUTR", "IN2A Switch", "IN2A PGA" }, + + { "HP PGA", NULL, "OSC" }, + { "HP PGA", NULL, "MIXOUTL" }, + { "HP PGA", NULL, "MIXOUTR" }, + + { "HPL", NULL, "HP PGA" }, + { "HPR", NULL, "HP PGA" }, + + { "SPKPGA", NULL, "OSC" }, + { "SPKPGA", NULL, "SPKMIX" }, + + { "SPKOUT", "Mixer Switch", "SPKPGA" }, + + { "Speaker", NULL, "SPKOUT" }, +}; + +static const struct snd_soc_dapm_route audio_map_in1_se[] = { + { "IN1B PGA", NULL, "IN1-" }, + + { "SPKMIX", "IN1B Switch", "IN1B PGA" }, + { "MIXOUTL", "IN1B Switch", "IN1B PGA" }, + { "MIXOUTR", "IN1B Switch", "IN1B PGA" }, +}; + +static const struct snd_soc_dapm_route audio_map_in1_diff[] = { + { "IN1A PGA", NULL, "IN1-" }, +}; + +static const struct snd_soc_dapm_route audio_map_in2_se[] = { + { "IN2B PGA", NULL, "IN2-" }, + + { "SPKMIX", "IN2B Switch", "IN2B PGA" }, + { "MIXOUTL", "IN2B Switch", "IN2B PGA" }, + { "MIXOUTR", "IN2B Switch", "IN2B PGA" }, +}; + +static const struct snd_soc_dapm_route audio_map_in2_diff[] = { + { "IN2A PGA", NULL, "IN2-" }, +}; + +static int wm9090_add_controls(struct snd_soc_codec *codec) +{ + struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec); + int i; + + snd_soc_dapm_new_controls(codec, wm9090_dapm_widgets, + ARRAY_SIZE(wm9090_dapm_widgets)); + + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_add_controls(codec, wm9090_controls, + ARRAY_SIZE(wm9090_controls)); + + if (wm9090->pdata.lin1_diff) { + snd_soc_dapm_add_routes(codec, audio_map_in1_diff, + ARRAY_SIZE(audio_map_in1_diff)); + } else { + snd_soc_dapm_add_routes(codec, audio_map_in1_se, + ARRAY_SIZE(audio_map_in1_se)); + snd_soc_add_controls(codec, wm9090_in1_se_controls, + ARRAY_SIZE(wm9090_in1_se_controls)); + } + + if (wm9090->pdata.lin2_diff) { + snd_soc_dapm_add_routes(codec, audio_map_in2_diff, + ARRAY_SIZE(audio_map_in2_diff)); + } else { + snd_soc_dapm_add_routes(codec, audio_map_in2_se, + ARRAY_SIZE(audio_map_in2_se)); + snd_soc_add_controls(codec, wm9090_in2_se_controls, + ARRAY_SIZE(wm9090_in2_se_controls)); + } + + if (wm9090->pdata.agc_ena) { + for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++) + snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i, + wm9090->pdata.agc[i]); + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3, + WM9090_AGC_ENA, WM9090_AGC_ENA); + } else { + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3, + WM9090_AGC_ENA, 0); + } + + return 0; + +} + +/* + * The machine driver should call this from their set_bias_level; if there + * isn't one then this can just be set as the set_bias_level function. + */ +static int wm9090_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + u16 *reg_cache = codec->reg_cache; + int i, ret; + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA, + WM9090_VMID_ENA); + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, + WM9090_BIAS_ENA | + WM9090_VMID_RES_MASK, + WM9090_BIAS_ENA | + 1 << WM9090_VMID_RES_SHIFT); + msleep(1); /* Probably an overestimate */ + break; + + case SND_SOC_BIAS_STANDBY: + if (codec->bias_level == SND_SOC_BIAS_OFF) { + /* Restore the register cache */ + for (i = 1; i < codec->reg_cache_size; i++) { + if (reg_cache[i] == wm9090_reg_defaults[i]) + continue; + if (wm9090_volatile(i)) + continue; + + ret = snd_soc_write(codec, i, reg_cache[i]); + if (ret != 0) + dev_warn(codec->dev, + "Failed to restore register %d: %d\n", + i, ret); + } + } + + /* We keep VMID off during standby since the combination of + * ground referenced outputs and class D speaker mean that + * latency is not an issue. + */ + snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, + WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0); + snd_soc_update_bits(codec, WM9090_ANTIPOP2, + WM9090_VMID_ENA, 0); + break; + + case SND_SOC_BIAS_OFF: + break; + } + + codec->bias_level = level; + + return 0; +} + +static int wm9090_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; + int ret = 0; + + if (wm9090_codec == NULL) { + dev_err(&pdev->dev, "Codec device not registered\n"); + return -ENODEV; + } + + socdev->card->codec = wm9090_codec; + codec = wm9090_codec; + + /* register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + dev_err(codec->dev, "failed to create pcms: %d\n", ret); + goto pcm_err; + } + + wm9090_add_controls(codec); + + return 0; + +pcm_err: + return ret; +} + +#ifdef CONFIG_PM +static int wm9090_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF); + + return 0; +} + +static int wm9090_resume(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + return 0; +} +#else +#define wm9090_suspend NULL +#define wm9090_resume NULL +#endif + +static int wm9090_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); + + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_wm9090 = { + .probe = wm9090_probe, + .remove = wm9090_remove, + .suspend = wm9090_suspend, + .resume = wm9090_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_wm9090); + +static int wm9090_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct wm9090_priv *wm9090; + struct snd_soc_codec *codec; + int ret; + + wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL); + if (wm9090 == NULL) { + dev_err(&i2c->dev, "Can not allocate memory\n"); + return -ENOMEM; + } + codec = &wm9090->codec; + + if (i2c->dev.platform_data) + memcpy(&wm9090->pdata, i2c->dev.platform_data, + sizeof(wm9090->pdata)); + + wm9090_codec = codec; + + i2c_set_clientdata(i2c, wm9090); + + mutex_init(&codec->mutex); + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + codec->control_data = i2c; + snd_soc_codec_set_drvdata(codec, wm9090); + codec->dev = &i2c->dev; + codec->name = "WM9090"; + codec->owner = THIS_MODULE; + codec->bias_level = SND_SOC_BIAS_OFF; + codec->set_bias_level = wm9090_set_bias_level, + codec->reg_cache_size = WM9090_MAX_REGISTER + 1; + codec->reg_cache = &wm9090->reg_cache; + codec->volatile_register = wm9090_volatile; + + ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C); + if (ret != 0) { + dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); + goto err; + } + + memcpy(&wm9090->reg_cache, wm9090_reg_defaults, + sizeof(wm9090->reg_cache)); + + ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET); + if (ret < 0) + goto err; + if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) { + dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", ret); + ret = -EINVAL; + goto err; + } + + ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0); + if (ret < 0) + goto err; + + /* Configure some defaults; they will be written out when we + * bring the bias up. + */ + wm9090->reg_cache[WM9090_IN1_LINE_INPUT_A_VOLUME] |= WM9090_IN1_VU + | WM9090_IN1A_ZC; + wm9090->reg_cache[WM9090_IN1_LINE_INPUT_B_VOLUME] |= WM9090_IN1_VU + | WM9090_IN1B_ZC; + wm9090->reg_cache[WM9090_IN2_LINE_INPUT_A_VOLUME] |= WM9090_IN2_VU + | WM9090_IN2A_ZC; + wm9090->reg_cache[WM9090_IN2_LINE_INPUT_B_VOLUME] |= WM9090_IN2_VU + | WM9090_IN2B_ZC; + wm9090->reg_cache[WM9090_SPEAKER_VOLUME_LEFT] |= + WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC; + wm9090->reg_cache[WM9090_LEFT_OUTPUT_VOLUME] |= + WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC; + wm9090->reg_cache[WM9090_RIGHT_OUTPUT_VOLUME] |= + WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC; + + wm9090->reg_cache[WM9090_CLOCKING_1] |= WM9090_TOCLK_ENA; + + wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + ret = snd_soc_register_codec(codec); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); + goto err_bias; + } + + return 0; + +err_bias: + wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF); +err: + kfree(wm9090); + i2c_set_clientdata(i2c, NULL); + wm9090_codec = NULL; + + return ret; +} + +static int wm9090_i2c_remove(struct i2c_client *i2c) +{ + struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c); + struct snd_soc_codec *codec = &wm9090->codec; + + snd_soc_unregister_codec(codec); + wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF); + kfree(wm9090); + wm9090_codec = NULL; + + return 0; +} + +static const struct i2c_device_id wm9090_id[] = { + { "wm9090", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm9090_id); + +static struct i2c_driver wm9090_i2c_driver = { + .driver = { + .name = "wm9090", + .owner = THIS_MODULE, + }, + .probe = wm9090_i2c_probe, + .remove = __devexit_p(wm9090_i2c_remove), + .id_table = wm9090_id, +}; + +static int __init wm9090_init(void) +{ + return i2c_add_driver(&wm9090_i2c_driver); +} +module_init(wm9090_init); + +static void __exit wm9090_exit(void) +{ + i2c_del_driver(&wm9090_i2c_driver); +} +module_exit(wm9090_exit); + +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM9090 ASoC driver"); +MODULE_LICENSE("GPL"); |