ASoC: cs53l30: Add codec driver support for Cirrus CS53L30

CS53L30 audio CODEC

Required properties:

  - compatible : "cirrus,cs53l30"

  - reg : the I2C address of the device

  - VA-supply, VP-supply : power supplies for the device,

    as covered in Documentation/devicetree/bindings/regulator/regulator.txt.

Optional properties:

  - reset-gpios : a GPIO spec for the reset pin.

  - cirrus,micbias-lvl : Set the output voltage level on the MICBIAS Pin.

			 0 = Hi-Z

			 1 = 1.80 V

			 2 = 2.75 V

  - cirrus,use-sdout2 : This is a boolean property. If present, it indicates

			the hardware design connects both SDOUT1 and SDOUT2

			pins to output data. Otherwise, it indicates that

			only SDOUT1 is connected for data output.

			* CS53l30 supports 4-channel data output in the same

			* frame using two different ways:

			* 1) Normal I2S mode on two data pins -- each SDOUT

			*    carries 2-channel data in the same time.

			* 2) TDM mode on one signle data pin -- SDOUT1 carries

			*    4-channel data per frame.

Example:

codec: cs53l30@48 {

	compatible = "cirrus,cs53l30";

	reg = <0x48>;

	reset-gpios = <&gpio 54 0>;

	VA-supply = <&cs53l30_va>;

	VP-supply = <&cs53l30_vp>;

};

	select SND_SOC_CS42XX8_I2C if I2C

	select SND_SOC_CS4349 if I2C

	select SND_SOC_CS47L24 if MFD_CS47L24

	select SND_SOC_CS53L30 if I2C

	select SND_SOC_CX20442 if TTY

	select SND_SOC_DA7210 if SND_SOC_I2C_AND_SPI

	select SND_SOC_DA7213 if I2C

config SND_SOC_CS47L24

	tristate

# Cirrus Logic Quad-Channel ADC

config SND_SOC_CS53L30

	tristate "Cirrus Logic CS53L30 CODEC"

	depends on I2C

config SND_SOC_CX20442

	tristate

	depends on TTY

snd-soc-cs42xx8-i2c-objs := cs42xx8-i2c.o

snd-soc-cs4349-objs := cs4349.o

snd-soc-cs47l24-objs := cs47l24.o

snd-soc-cs53l30-objs := cs53l30.o

snd-soc-cx20442-objs := cx20442.o

snd-soc-da7210-objs := da7210.o

snd-soc-da7213-objs := da7213.o

obj-$(CONFIG_SND_SOC_CS42XX8_I2C) += snd-soc-cs42xx8-i2c.o

obj-$(CONFIG_SND_SOC_CS4349)	+= snd-soc-cs4349.o

obj-$(CONFIG_SND_SOC_CS47L24)	+= snd-soc-cs47l24.o

obj-$(CONFIG_SND_SOC_CS53L30)	+= snd-soc-cs53l30.o

obj-$(CONFIG_SND_SOC_CX20442)	+= snd-soc-cx20442.o

obj-$(CONFIG_SND_SOC_DA7210)	+= snd-soc-da7210.o

obj-$(CONFIG_SND_SOC_DA7213)	+= snd-soc-da7213.o