[PATCH v3 09/14] ASoC: twl4030: Move hs_extmute GPIO handling to driver

Peter Ujfalusi
2012-09-06T12:12:38Z

The external mute (if it is in use) is handled by a GPIO line. Prepare to
remove the set_hs_extmute callback and replace it with:
hs_extmute_gpio: the GPIO number to use for external mute

When the users of set_hs_extmute has been converted the callback can be removed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
include/linux/i2c/twl.h | 4 +++-
sound/soc/codecs/twl4030.c | 32 ++++++++++++++++++++++++++++++--
2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index ac6488c..2040309 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -667,7 +667,9 @@ struct twl4030_codec_data {
unsigned int check_defaults:1;
unsigned int reset_registers:1;
unsigned int hs_extmute:1;
- void (*set_hs_extmute)(int mute);
+ void (*set_hs_extmute)(int mute); /* Deprecated, use hs_extmute_gpio and
+ hs_extmute_disable_level */
+ int hs_extmute_gpio;
};

struct twl4030_vibra_data {
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index 391fcfc..5fc271a 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -28,6 +28,7 @@
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
#include <linux/slab.h>
+#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -302,6 +303,22 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
u8 reg, byte;
int i = 0;

+ if (pdata && pdata->hs_extmute &&
+ gpio_is_valid(pdata->hs_extmute_gpio)) {
+ int ret;
+
+ if (!pdata->hs_extmute_gpio)
+ dev_warn(codec->dev,
+ "Extmute GPIO is 0 is this correct?\n");
+
+ ret = gpio_request_one(pdata->hs_extmute_gpio,
+ GPIOF_OUT_INIT_LOW, "hs_extmute");
+ if (ret) {
+ dev_err(codec->dev, "Failed to get hs_extmute GPIO\n");
+ pdata->hs_extmute_gpio = -1;
+ }
+ }
+
/* Check defaults, if instructed before anything else */
if (pdata && pdata->check_defaults)
twl4030_check_defaults(codec);
@@ -748,7 +765,10 @@ static void headset_ramp(struct snd_soc_codec *codec, int ramp)
/* Enable external mute control, this dramatically reduces
* the pop-noise */
if (pdata && pdata->hs_extmute) {
- if (pdata->set_hs_extmute) {
+ if (gpio_is_valid(pdata->hs_extmute_gpio)) {
+ gpio_set_value(pdata->hs_extmute_gpio, 1);
+ } else if (pdata->set_hs_extmute) {
+ dev_warn(codec->dev, "set_hs_extmute is deprecated\n");
pdata->set_hs_extmute(1);
} else {
hs_pop |= TWL4030_EXTMUTE;
@@ -786,7 +806,10 @@ static void headset_ramp(struct snd_soc_codec *codec, int ramp)

/* Disable external mute */
if (pdata && pdata->hs_extmute) {
- if (pdata->set_hs_extmute) {
+ if (gpio_is_valid(pdata->hs_extmute_gpio)) {
+ gpio_set_value(pdata->hs_extmute_gpio, 0);
+ } else if (pdata->set_hs_extmute) {
+ dev_warn(codec->dev, "set_hs_extmute is deprecated\n");
pdata->set_hs_extmute(0);
} else {
hs_pop &= ~TWL4030_EXTMUTE;
@@ -2230,12 +2253,17 @@ static int twl4030_soc_probe(struct snd_soc_codec *codec)

static int twl4030_soc_remove(struct snd_soc_codec *codec)
{
+ struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev);
struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);

/* Reset registers to their chip default before leaving */
twl4030_reset_registers(codec);
twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
kfree(twl4030);
+
+ if (pdata && pdata->hs_extmute && gpio_is_valid(pdata->hs_extmute_gpio))
+ gpio_free(pdata->hs_extmute_gpio);
+
return 0;
}

--
1.7.12