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ASoC: tlv320aic32x4: Add gpio configuration to the codec

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Add the ability to configure the MFP1->MFP5 registers
as GPIOs.  In addition adding ALSA controls to get and set
the GPIO state.

Per the data sheet each MFP can be configured as a GPIO
input only, output only or either an input or output.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dan Murphy
2017-07-12 13:37:00 -05:00
committed by Mark Brown
parent fde0543f11
commit b9045b9c6b
4 changed files with 241 additions and 0 deletions
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23
include/sound/tlv320aic32x4.h
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@@ -22,7 +22,30 @@
#define AIC32X4_MICPGA_ROUTE_LMIC_IN2R_10K 0x00000001
#define AIC32X4_MICPGA_ROUTE_RMIC_IN1L_10K 0x00000002
/* GPIO API */
#define AIC32X4_MFPX_DEFAULT_VALUE 0xff
#define AIC32X4_MFP1_DIN_DISABLED 0
#define AIC32X4_MFP1_DIN_ENABLED 0x2
#define AIC32X4_MFP1_GPIO_IN 0x4
#define AIC32X4_MFP2_GPIO_OUT_LOW 0x0
#define AIC32X4_MFP2_GPIO_OUT_HIGH 0x1
#define AIC32X4_MFP_GPIO_ENABLED 0x4
#define AIC32X4_MFP5_GPIO_DISABLED 0x0
#define AIC32X4_MFP5_GPIO_INPUT 0x8
#define AIC32X4_MFP5_GPIO_OUTPUT 0xc
#define AIC32X4_MFP5_GPIO_OUT_LOW 0x0
#define AIC32X4_MFP5_GPIO_OUT_HIGH 0x1
struct aic32x4_setup_data {
unsigned int gpio_func[5];
};
struct aic32x4_pdata {
struct aic32x4_setup_data *setup;
u32 power_cfg;
u32 micpga_routing;
bool swapdacs;