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ASoC: rt5677: Add ACPI support

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The Chromebook Pixel 2015 uses this codec with the ACPI ID RT5677CE, but
does not use the standard DT property names so add a new function to
parse the codec properties from these ACPI properties.

Also, the GPIOs are only available by index, so we need to register a
mapping to allow machine drivers to access the GPIOs by name.

Signed-off-by: John Keeping <john@metanate.com>
Tested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Keeping 2016-08-24 22:06:35 +01:00 committed by Mark Brown
parent 29b4817d40
commit 89128534f9
1 changed files with 52 additions and 1 deletions
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53
sound/soc/codecs/rt5677.c
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@ -9,6 +9,7 @@
* published by the Free Software Foundation.
*/
#include <linux/acpi.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
@ -40,6 +41,15 @@
#define RT5677_PR_BASE (RT5677_PR_RANGE_BASE + (0 * RT5677_PR_SPACING))
/* GPIO indexes defined by ACPI */
enum {
RT5677_GPIO_PLUG_DET = 0,
RT5677_GPIO_MIC_PRESENT_L = 1,
RT5677_GPIO_HOTWORD_DET_L = 2,
RT5677_GPIO_DSP_INT = 3,
RT5677_GPIO_HP_AMP_SHDN_L = 4,
};
static const struct regmap_range_cfg rt5677_ranges[] = {
{
.name = "PR",
@ -5018,10 +5028,47 @@ static const struct regmap_config rt5677_regmap = {
static const struct i2c_device_id rt5677_i2c_id[] = {
{ "rt5677", RT5677 },
{ "rt5676", RT5676 },
{ "RT5677CE:00", RT5677 },
{ }
};
MODULE_DEVICE_TABLE(i2c, rt5677_i2c_id);
static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false };
static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false };
static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false };
static const struct acpi_gpio_mapping bdw_rt5677_gpios[] = {
{ "plug-det-gpios", &plug_det_gpio, 1 },
{ "mic-present-gpios", &mic_present_gpio, 1 },
{ "headphone-enable-gpios", &headphone_enable_gpio, 1 },
{ NULL },
};
static void rt5677_read_acpi_properties(struct rt5677_priv *rt5677,
struct device *dev)
{
int ret;
u32 val;
ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev),
bdw_rt5677_gpios);
if (ret)
dev_warn(dev, "Failed to add driver gpios\n");
if (!device_property_read_u32(dev, "DCLK", &val))
rt5677->pdata.dmic2_clk_pin = val;
rt5677->pdata.in1_diff = device_property_read_bool(dev, "IN1");
rt5677->pdata.in2_diff = device_property_read_bool(dev, "IN2");
rt5677->pdata.lout1_diff = device_property_read_bool(dev, "OUT1");
rt5677->pdata.lout2_diff = device_property_read_bool(dev, "OUT2");
rt5677->pdata.lout3_diff = device_property_read_bool(dev, "OUT3");
device_property_read_u32(dev, "JD1", &rt5677->pdata.jd1_gpio);
device_property_read_u32(dev, "JD2", &rt5677->pdata.jd2_gpio);
device_property_read_u32(dev, "JD3", &rt5677->pdata.jd3_gpio);
}
static void rt5677_read_device_properties(struct rt5677_priv *rt5677,
struct device *dev)
{
@ -5127,8 +5174,12 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
if (pdata)
rt5677->pdata = *pdata;
else
else if (i2c->dev.of_node)
rt5677_read_device_properties(rt5677, &i2c->dev);
else if (ACPI_HANDLE(&i2c->dev))
rt5677_read_acpi_properties(rt5677, &i2c->dev);
else
return -EINVAL;
/* pow-ldo2 and reset are optional. The codec pins may be statically
* connected on the board without gpios. If the gpio device property