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[ALSA] soc - tlv320aic3x - add GPIO support

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This patch adds support for AIC3x GPIO lines. They can be configured for
many possible functions as well as be driven manually. I also introduced
i2c read functionality since the GPIO state register has to be read from
hardware every time and can not be served from cache.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Daniel Mack
2008-04-30 16:20:52 +02:00
committed by Jaroslav Kysela
parent 4f9c16ccfa
commit 54e7e6167d
2 changed files with 101 additions and 1 deletions
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49
sound/soc/codecs/tlv320aic3x.h
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@@ -108,8 +108,14 @@
#define DACR1_2_RLOPM_VOL 92
#define LLOPM_CTRL 86
#define RLOPM_CTRL 93
/* Clock generation control register */
/* GPIO/IRQ registers */
#define AIC3X_STICKY_IRQ_FLAGS_REG 96
#define AIC3X_RT_IRQ_FLAGS_REG 97
#define AIC3X_GPIO1_REG 98
#define AIC3X_GPIO2_REG 99
#define AIC3X_GPIOA_REG 100
#define AIC3X_GPIOB_REG 101
/* Clock generation control register */
#define AIC3X_CLKGEN_CTRL_REG 102
/* Page select register bits */
@@ -175,8 +181,49 @@
/* Default input volume */
#define DEFAULT_GAIN 0x20
/* GPIO API */
enum {
AIC3X_GPIO1_FUNC_DISABLED = 0,
AIC3X_GPIO1_FUNC_AUDIO_WORDCLK_ADC = 1,
AIC3X_GPIO1_FUNC_CLOCK_MUX = 2,
AIC3X_GPIO1_FUNC_CLOCK_MUX_DIV2 = 3,
AIC3X_GPIO1_FUNC_CLOCK_MUX_DIV4 = 4,
AIC3X_GPIO1_FUNC_CLOCK_MUX_DIV8 = 5,
AIC3X_GPIO1_FUNC_SHORT_CIRCUIT_IRQ = 6,
AIC3X_GPIO1_FUNC_AGC_NOISE_IRQ = 7,
AIC3X_GPIO1_FUNC_INPUT = 8,
AIC3X_GPIO1_FUNC_OUTPUT = 9,
AIC3X_GPIO1_FUNC_DIGITAL_MIC_MODCLK = 10,
AIC3X_GPIO1_FUNC_AUDIO_WORDCLK = 11,
AIC3X_GPIO1_FUNC_BUTTON_IRQ = 12,
AIC3X_GPIO1_FUNC_HEADSET_DETECT_IRQ = 13,
AIC3X_GPIO1_FUNC_HEADSET_DETECT_OR_BUTTON_IRQ = 14,
AIC3X_GPIO1_FUNC_ALL_IRQ = 16
};
enum {
AIC3X_GPIO2_FUNC_DISABLED = 0,
AIC3X_GPIO2_FUNC_HEADSET_DETECT_IRQ = 2,
AIC3X_GPIO2_FUNC_INPUT = 3,
AIC3X_GPIO2_FUNC_OUTPUT = 4,
AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT = 5,
AIC3X_GPIO2_FUNC_AUDIO_BITCLK = 8,
AIC3X_GPIO2_FUNC_HEADSET_DETECT_OR_BUTTON_IRQ = 9,
AIC3X_GPIO2_FUNC_ALL_IRQ = 10,
AIC3X_GPIO2_FUNC_SHORT_CIRCUIT_OR_AGC_IRQ = 11,
AIC3X_GPIO2_FUNC_HEADSET_OR_BUTTON_PRESS_OR_SHORT_CIRCUIT_IRQ = 12,
AIC3X_GPIO2_FUNC_SHORT_CIRCUIT_IRQ = 13,
AIC3X_GPIO2_FUNC_AGC_NOISE_IRQ = 14,
AIC3X_GPIO2_FUNC_BUTTON_PRESS_IRQ = 15
};
void aic3x_set_gpio(struct snd_soc_codec *codec, int gpio, int state);
int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio);
int aic3x_headset_detected(struct snd_soc_codec *codec);
struct aic3x_setup_data {
unsigned short i2c_address;
unsigned int gpio_func[2];
};
extern struct snd_soc_codec_dai aic3x_dai;