ASoC: add es8316 codec driver

Add a codec driver for the Everest ES8316, based on code provided by
David Yang from Everest Semi.

I limited the functionality to items where the vendor code was clear,
and things that can be tested on the Weibu F3C (Intel Cherry Trail).
As a result the initial implementation only supports running in slave
mode at single speed (up to 48kHz sample rate) using I2S. HPD is not
supported.
Signed-off-by: David Yang <yangxiaohua@everest-semi.com>
[drake@endlessm.com: significant cleanups and simplifications,
                     remove dead/unclear code]
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -72,6 +72,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_DA9055 if I2C
 	select SND_SOC_DIO2125
 	select SND_SOC_DMIC
+	select SND_SOC_ES8316 if I2C
 	select SND_SOC_ES8328_SPI if SPI_MASTER
 	select SND_SOC_ES8328_I2C if I2C
 	select SND_SOC_ES7134
@@ -543,6 +544,9 @@ config SND_SOC_HDMI_CODEC
 config SND_SOC_ES7134
        tristate "Everest Semi ES7134 CODEC"
 
+config SND_SOC_ES8316
+	tristate "Everest Semi ES8316 CODEC"
+
 config SND_SOC_ES8328
 	tristate
 

sound/soc/codecs/Makefile

@@ -65,6 +65,7 @@ snd-soc-da732x-objs := da732x.o
 snd-soc-da9055-objs := da9055.o
 snd-soc-dmic-objs := dmic.o
 snd-soc-es7134-objs := es7134.o
+snd-soc-es8316-objs := es8316.o
 snd-soc-es8328-objs := es8328.o
 snd-soc-es8328-i2c-objs := es8328-i2c.o
 snd-soc-es8328-spi-objs := es8328-spi.o
@@ -300,6 +301,7 @@ obj-$(CONFIG_SND_SOC_DA732X)	+= snd-soc-da732x.o
 obj-$(CONFIG_SND_SOC_DA9055)	+= snd-soc-da9055.o
 obj-$(CONFIG_SND_SOC_DMIC)	+= snd-soc-dmic.o
 obj-$(CONFIG_SND_SOC_ES7134)	+= snd-soc-es7134.o
+obj-$(CONFIG_SND_SOC_ES8316)    += snd-soc-es8316.o
 obj-$(CONFIG_SND_SOC_ES8328)	+= snd-soc-es8328.o
 obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o
 obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o

sound/soc/codecs/es8316.h

+/*
+ * Copyright Everest Semiconductor Co.,Ltd
+ *
+ * Author: David Yang <yangxiaohua@everest-semi.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 _ES8316_H
+#define _ES8316_H
+
+/*
+ * ES8316 register space
+ */
+
+/* Reset Control */
+#define ES8316_RESET		0x00
+
+/* Clock Management */
+#define ES8316_CLKMGR_CLKSW	0x01
+#define ES8316_CLKMGR_CLKSEL	0x02
+#define ES8316_CLKMGR_ADCOSR	0x03
+#define ES8316_CLKMGR_ADCDIV1	0x04
+#define ES8316_CLKMGR_ADCDIV2	0x05
+#define ES8316_CLKMGR_DACDIV1	0x06
+#define ES8316_CLKMGR_DACDIV2	0x07
+#define ES8316_CLKMGR_CPDIV	0x08
+
+/* Serial Data Port Control */
+#define ES8316_SERDATA1		0x09
+#define ES8316_SERDATA_ADC	0x0a
+#define ES8316_SERDATA_DAC	0x0b
+
+/* System Control */
+#define ES8316_SYS_VMIDSEL	0x0c
+#define ES8316_SYS_PDN		0x0d
+#define ES8316_SYS_LP1		0x0e
+#define ES8316_SYS_LP2		0x0f
+#define ES8316_SYS_VMIDLOW	0x10
+#define ES8316_SYS_VSEL		0x11
+#define ES8316_SYS_REF		0x12
+
+/* Headphone Mixer */
+#define ES8316_HPMIX_SEL	0x13
+#define ES8316_HPMIX_SWITCH	0x14
+#define ES8316_HPMIX_PDN	0x15
+#define ES8316_HPMIX_VOL	0x16
+
+/* Charge Pump Headphone driver */
+#define ES8316_CPHP_OUTEN	0x17
+#define ES8316_CPHP_ICAL_VOL	0x18
+#define ES8316_CPHP_PDN1	0x19
+#define ES8316_CPHP_PDN2	0x1a
+#define ES8316_CPHP_LDOCTL	0x1b
+
+/* Calibration */
+#define ES8316_CAL_TYPE		0x1c
+#define ES8316_CAL_SET		0x1d
+#define ES8316_CAL_HPLIV	0x1e
+#define ES8316_CAL_HPRIV	0x1f
+#define ES8316_CAL_HPLMV	0x20
+#define ES8316_CAL_HPRMV	0x21
+
+/* ADC Control */
+#define ES8316_ADC_PDN_LINSEL	0x22
+#define ES8316_ADC_PGAGAIN	0x23
+#define ES8316_ADC_D2SEPGA	0x24
+#define ES8316_ADC_DMIC		0x25
+#define ES8316_ADC_MUTE		0x26
+#define ES8316_ADC_VOLUME	0x27
+#define ES8316_ADC_ALC1		0x29
+#define ES8316_ADC_ALC2		0x2a
+#define ES8316_ADC_ALC3		0x2b
+#define ES8316_ADC_ALC4		0x2c
+#define ES8316_ADC_ALC5		0x2d
+#define ES8316_ADC_ALC_NG	0x2e
+
+/* DAC Control */
+#define ES8316_DAC_PDN		0x2f
+#define ES8316_DAC_SET1		0x30
+#define ES8316_DAC_SET2		0x31
+#define ES8316_DAC_SET3		0x32
+#define ES8316_DAC_VOLL		0x33
+#define ES8316_DAC_VOLR		0x34
+
+/* GPIO */
+#define ES8316_GPIO_SEL		0x4d
+#define ES8316_GPIO_DEBOUNCE	0x4e
+#define ES8316_GPIO_FLAG	0x4f
+
+/* Test mode */
+#define ES8316_TESTMODE		0x50
+#define ES8316_TEST1		0x51
+#define ES8316_TEST2		0x52
+#define ES8316_TEST3		0x53
+
+/*
+ * Field definitions
+ */
+
+/* ES8316_RESET */
+#define ES8316_RESET_CSM_ON		0x80
+
+/* ES8316_CLKMGR_CLKSW */
+#define ES8316_CLKMGR_CLKSW_MCLK_ON	0x40
+#define ES8316_CLKMGR_CLKSW_BCLK_ON	0x20
+
+/* ES8316_SERDATA1 */
+#define ES8316_SERDATA1_MASTER		0x80
+#define ES8316_SERDATA1_BCLK_INV	0x20
+
+/* ES8316_SERDATA_ADC and _DAC */
+#define ES8316_SERDATA2_FMT_MASK	0x3
+#define ES8316_SERDATA2_FMT_I2S		0x00
+#define ES8316_SERDATA2_FMT_LEFTJ	0x01
+#define ES8316_SERDATA2_FMT_RIGHTJ	0x02
+#define ES8316_SERDATA2_FMT_PCM		0x03
+#define ES8316_SERDATA2_ADCLRP		0x20
+#define ES8316_SERDATA2_LEN_MASK	0x1c
+#define ES8316_SERDATA2_LEN_24		0x00
+#define ES8316_SERDATA2_LEN_20		0x04
+#define ES8316_SERDATA2_LEN_18		0x08
+#define ES8316_SERDATA2_LEN_16		0x0c
+#define ES8316_SERDATA2_LEN_32		0x10
+
+#endif