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authorJohn Keeping <john@metanate.com>2016-08-24 22:06:35 +0100
committerMark Brown <broonie@kernel.org>2016-09-24 19:59:37 +0100
commit89128534f925711eea1653c264683b7d14a46530 (patch)
tree60478a877e4d449e20306011acc5f075c49657a2 /sound
parent29b4817d4018df78086157ea3a55c1d9424a7cfc (diff)
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ASoC: rt5677: Add ACPI support
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/rt5677.c53
1 files changed, 52 insertions, 1 deletions
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index da9483c1c6fb..0e7aba1af881 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -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