ASoC: add RT286 CODEC driver

This patch adds Realtek ALC286 codec driver.

ALC286 is a dual mode codec, which can run as HD-A or I2S mode.
It is controlled by HD-A verb commands via I2C protocol.
The following is the I/O difference between ALC286 and general I2S codecs.
1. A HD-A verb command contains three parts, NID, VID, and PID.
   And an I2S command contains only two parts: address and data.
2. Not only the register address is written, but the read command also
   includes the entire write command.
3. rt286 uses different registers for read and write the same bits.

We map verb command to regmap structure. However, we read most registers from
cache to prevent the asymmetry read/write issue in rt286.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Gustaw Lewandowski <gustaw.lewandowski@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 193 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt286.h b/sound/soc/codecs/rt286.h
new file mode 100644
index 000000000000..21c570f88e9b
--- /dev/null
+++ b/sound/soc/codecs/rt286.h
@@ -0,0 +1,193 @@
+/*
+ * rt286.h  --  RT286 ALSA SoC audio driver
+ *
+ * Copyright 2011 Realtek Microelectronics
+ * Author: Johnny Hsu <johnnyhsu@realtek.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.
+ */
+
+#ifndef __RT286_H__
+#define __RT286_H__
+
+#define VERB_CMD(V, N, D) ((N << 20) | (V << 8) | D)
+
+#define RT286_AUDIO_FUNCTION_GROUP                      0x01
+#define RT286_DAC_OUT1                                  0x02
+#define RT286_DAC_OUT2                                  0x03
+#define RT286_ADC_IN1                                   0x09
+#define RT286_ADC_IN2                                   0x08
+#define RT286_MIXER_IN                                  0x0b
+#define RT286_MIXER_OUT1                                0x0c
+#define RT286_MIXER_OUT2                                0x0d
+#define RT286_DMIC1                                     0x12
+#define RT286_DMIC2                                     0x13
+#define RT286_SPK_OUT                                   0x14
+#define RT286_MIC1                                      0x18
+#define RT286_LINE1                                     0x1a
+#define RT286_BEEP                                      0x1d
+#define RT286_SPDIF                                     0x1e
+#define RT286_VENDOR_REGISTERS                          0x20
+#define RT286_HP_OUT                                    0x21
+#define RT286_MIXER_IN1                                 0x22
+#define RT286_MIXER_IN2                                 0x23
+
+#define RT286_SET_PIN_SFT                               6
+#define RT286_SET_PIN_ENABLE                            0x40
+#define RT286_SET_PIN_DISABLE                           0
+#define RT286_SET_EAPD_HIGH                             0x2
+#define RT286_SET_EAPD_LOW                              0
+
+#define RT286_MUTE_SFT                                  7
+
+/* Verb commands */
+#define RT286_GET_PARAM(NID, PARAM) VERB_CMD(AC_VERB_PARAMETERS, NID, PARAM)
+#define RT286_SET_POWER(NID) VERB_CMD(AC_VERB_SET_POWER_STATE, NID, 0)
+#define RT286_SET_AUDIO_POWER RT286_SET_POWER(RT286_AUDIO_FUNCTION_GROUP)
+#define RT286_SET_HPO_POWER RT286_SET_POWER(RT286_HP_OUT)
+#define RT286_SET_SPK_POWER RT286_SET_POWER(RT286_SPK_OUT)
+#define RT286_SET_DMIC1_POWER RT286_SET_POWER(RT286_DMIC1)
+#define RT286_SPK_MUX\
+        VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT286_SPK_OUT, 0)
+#define RT286_HPO_MUX\
+        VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT286_HP_OUT, 0)
+#define RT286_ADC0_MUX\
+        VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT286_MIXER_IN1, 0)
+#define RT286_ADC1_MUX\
+        VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT286_MIXER_IN2, 0)
+#define RT286_SET_MIC1\
+        VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT286_MIC1, 0)
+#define RT286_SET_PIN_HPO\
+        VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT286_HP_OUT, 0)
+#define RT286_SET_PIN_SPK\
+        VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT286_SPK_OUT, 0)
+#define RT286_SET_PIN_DMIC1\
+        VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT286_DMIC1, 0)
+#define RT286_SPK_EAPD\
+        VERB_CMD(AC_VERB_SET_EAPD_BTLENABLE, RT286_SPK_OUT, 0)
+#define RT286_SET_AMP_GAIN_HPO\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_HP_OUT, 0)
+#define RT286_SET_AMP_GAIN_ADC_IN1\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_ADC_IN1, 0)
+#define RT286_SET_AMP_GAIN_ADC_IN2\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_ADC_IN2, 0)
+#define RT286_GET_HP_SENSE\
+        VERB_CMD(AC_VERB_GET_PIN_SENSE, RT286_HP_OUT, 0)
+#define RT286_GET_MIC1_SENSE\
+        VERB_CMD(AC_VERB_GET_PIN_SENSE, RT286_MIC1, 0)
+#define RT286_SET_DMIC2_DEFAULT\
+        VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT286_DMIC2, 0)
+#define RT286_DACL_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_DAC_OUT1, 0xa000)
+#define RT286_DACR_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_DAC_OUT1, 0x9000)
+#define RT286_ADCL_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_ADC_IN1, 0x6000)
+#define RT286_ADCR_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_ADC_IN1, 0x5000)
+#define RT286_MIC_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIC1, 0x7000)
+#define RT286_SPOL_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_SPK_OUT, 0xa000)
+#define RT286_SPOR_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_SPK_OUT, 0x9000)
+#define RT286_HPOL_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_HP_OUT, 0xa000)
+#define RT286_HPOR_GAIN\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_HP_OUT, 0x9000)
+#define RT286_F_DAC_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_OUT1, 0x7000)
+#define RT286_F_RECMIX_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_OUT1, 0x7100)
+#define RT286_REC_MIC_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_IN, 0x7000)
+#define RT286_REC_I2S_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_IN, 0x7100)
+#define RT286_REC_LINE_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_IN, 0x7200)
+#define RT286_REC_BEEP_SWITCH\
+        VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT286_MIXER_IN, 0x7300)
+#define RT286_DAC_FORMAT\
+        VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT286_DAC_OUT1, 0)
+#define RT286_ADC_FORMAT\
+        VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT286_ADC_IN1, 0)
+#define RT286_COEF_INDEX\
+        VERB_CMD(AC_VERB_SET_COEF_INDEX, RT286_VENDOR_REGISTERS, 0)
+#define RT286_PROC_COEF\
+        VERB_CMD(AC_VERB_SET_PROC_COEF, RT286_VENDOR_REGISTERS, 0)
+
+/* Index registers */
+#define RT286_A_BIAS_CTRL1      0x01
+#define RT286_A_BIAS_CTRL2      0x02
+#define RT286_POWER_CTRL1       0x03
+#define RT286_A_BIAS_CTRL3      0x04
+#define RT286_POWER_CTRL2       0x08
+#define RT286_I2S_CTRL1         0x09
+#define RT286_I2S_CTRL2         0x0a
+#define RT286_CLK_DIV           0x0b
+#define RT286_POWER_CTRL3       0x0f
+#define RT286_MIC1_DET_CTRL     0x19
+#define RT286_MISC_CTRL1        0x20
+#define RT286_IRQ_CTRL          0x33
+#define RT286_PLL_CTRL1         0x49
+#define RT286_CBJ_CTRL1         0x4f
+#define RT286_CBJ_CTRL2         0x50
+#define RT286_PLL_CTRL          0x63
+
+/* SPDIF (0x06) */
+#define RT286_SPDIF_SEL_SFT     0
+#define RT286_SPDIF_SEL_PCM0    0
+#define RT286_SPDIF_SEL_PCM1    1
+#define RT286_SPDIF_SEL_SPOUT   2
+#define RT286_SPDIF_SEL_PP      3
+
+/* RECMIX (0x0b) */
+#define RT286_M_REC_BEEP_SFT    0
+#define RT286_M_REC_LINE1_SFT   1
+#define RT286_M_REC_MIC1_SFT    2
+#define RT286_M_REC_I2S_SFT     3
+
+/* Front (0x0c) */
+#define RT286_M_FRONT_DAC_SFT   0
+#define RT286_M_FRONT_REC_SFT   1
+
+/* SPK-OUT (0x14) */
+#define RT286_M_SPK_MUX_SFT     14
+#define RT286_SPK_SEL_MASK      0x1
+#define RT286_SPK_SEL_SFT       0
+#define RT286_SPK_SEL_F         0
+#define RT286_SPK_SEL_S         1
+
+/* HP-OUT (0x21) */
+#define RT286_M_HP_MUX_SFT      14
+#define RT286_HP_SEL_MASK       0x1
+#define RT286_HP_SEL_SFT        0
+#define RT286_HP_SEL_F          0
+#define RT286_HP_SEL_S          1
+
+/* ADC (0x22) (0x23) */
+#define RT286_ADC_SEL_MASK      0x7
+#define RT286_ADC_SEL_SFT       0
+#define RT286_ADC_SEL_SURR      0
+#define RT286_ADC_SEL_FRONT     1
+#define RT286_ADC_SEL_DMIC      2
+#define RT286_ADC_SEL_BEEP      4
+#define RT286_ADC_SEL_LINE1     5
+#define RT286_ADC_SEL_I2S       6
+#define RT286_ADC_SEL_MIC1      7
+
+#define RT286_SCLK_S_MCLK       0
+#define RT286_SCLK_S_PLL        1
+
+enum {
+        RT286_AIF1,
+        RT286_AIF2,
+        RT286_AIFS,
+};
+
+int rt286_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack);
+
+#endif /* __RT286_H__ */
+