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ASoC: adau1701: add support for pin muxing

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The ADAU1701 has 12 pins that can be configured depending on the system
configuration. Allow settting the corresponding registers from DT.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Daniel Mack 2013-06-24 16:31:32 +02:00 committed by Mark Brown
parent 45405d5892
commit 97d0a86845
2 changed files with 36 additions and 2 deletions
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6
Documentation/devicetree/bindings/sound/adi,adau1701.txt
View file

@ -16,6 +16,10 @@ Optional properties:
The state of the pins are set according to the
configured clock divider on ASoC side before the
firmware is loaded.
- adi,pin-config: An array of 12 numerical values selecting one of the
pin configurations as described in the datasheet,
table 53. Note that the value of this property has
to be prefixed with '/bits/ 8'.
Examples:
@ -25,5 +29,7 @@ Examples:
reg = <0x34>;
reset-gpio = <&gpio 23 0>;
adi,pll-mode-gpios = <&gpio 24 0 &gpio 25 0>;
adi,pin-config = /bits/ 8 <0x4 0x7 0x5 0x5 0x4 0x4
0x4 0x4 0x4 0x4 0x4 0x4>;
};
};

32
sound/soc/codecs/adau1701.c
View file

@ -29,6 +29,9 @@
#define ADAU1701_SEROCTL 0x081e
#define ADAU1701_SERICTL 0x081f
#define ADAU1701_AUXNPOW 0x0822
#define ADAU1701_PINCONF_0 0x0820
#define ADAU1701_PINCONF_1 0x0821
#define ADAU1701_AUXNPOW 0x0822
#define ADAU1701_OSCIPOW 0x0826
@ -99,6 +102,7 @@ struct adau1701 {
unsigned int pll_clkdiv;
unsigned int sysclk;
struct regmap *regmap;
u8 pin_config[12];
};
static const struct snd_kcontrol_new adau1701_controls[] = {
@ -134,6 +138,9 @@ static unsigned int adau1701_register_size(struct device *dev,
unsigned int reg)
{
switch (reg) {
case ADAU1701_PINCONF_0:
case ADAU1701_PINCONF_1:
return 3;
case ADAU1701_DSPCTRL:
case ADAU1701_SEROCTL:
case ADAU1701_AUXNPOW:
@ -164,7 +171,7 @@ static int adau1701_reg_write(void *context, unsigned int reg,
struct i2c_client *client = context;
unsigned int i;
unsigned int size;
uint8_t buf[4];
uint8_t buf[5];
int ret;
size = adau1701_register_size(&client->dev, reg);
@ -584,7 +591,8 @@ MODULE_DEVICE_TABLE(of, adau1701_dt_ids);
static int adau1701_probe(struct snd_soc_codec *codec)
{
int ret;
int i, ret;
unsigned int val;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
codec->control_data = to_i2c_client(codec->dev);
@ -602,6 +610,19 @@ static int adau1701_probe(struct snd_soc_codec *codec)
if (ret < 0)
return ret;
/* set up pin config */
val = 0;
for (i = 0; i < 6; i++)
val |= adau1701->pin_config[i] << (i * 4);
regmap_write(adau1701->regmap, ADAU1701_PINCONF_0, val);
val = 0;
for (i = 0; i < 6; i++)
val |= adau1701->pin_config[i + 6] << (i * 4);
regmap_write(adau1701->regmap, ADAU1701_PINCONF_1, val);
return 0;
}
@ -662,6 +683,13 @@ static int adau1701_i2c_probe(struct i2c_client *client,
"adi,pll-mode-gpios", 1);
if (gpio_pll_mode[1] < 0 && gpio_pll_mode[1] != -ENOENT)
return gpio_pll_mode[1];
of_property_read_u32(dev->of_node, "adi,pll-clkdiv",
&adau1701->pll_clkdiv);
of_property_read_u8_array(dev->of_node, "adi,pin-config",
adau1701->pin_config,
ARRAY_SIZE(adau1701->pin_config));
}
if (gpio_is_valid(gpio_nreset)) {