diff options
Diffstat (limited to 'recipes/linux/linux-omap-2.6.29/omap3-touchbook/sound-headphone-detection.patch')
| -rw-r--r-- | recipes/linux/linux-omap-2.6.29/omap3-touchbook/sound-headphone-detection.patch | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-2.6.29/omap3-touchbook/sound-headphone-detection.patch b/recipes/linux/linux-omap-2.6.29/omap3-touchbook/sound-headphone-detection.patch new file mode 100644 index 0000000000..ef8b3626bc --- /dev/null +++ b/recipes/linux/linux-omap-2.6.29/omap3-touchbook/sound-headphone-detection.patch @@ -0,0 +1,93 @@ +From db8f1eba9154789c45c6a92413bbbd94f5d9c7f5 Mon Sep 17 00:00:00 2001 +From: Tim Yamin <plasm@roo.me.uk> +Date: Wed, 29 Apr 2009 17:30:25 -0700 +Subject: [PATCH] Touch Book: turn on/off the class D amplifier depending on whether the + headphones are plugged into the jack or not. + +Signed-off-by: Tim Yamin <plasm@roo.me.uk> +--- + sound/soc/omap/omap3beagle.c | 33 +++++++++++++++++++++++++++++++++ + 1 files changed, 33 insertions(+), 0 deletions(-) + +diff --git a/sound/soc/omap/omap3beagle.c b/sound/soc/omap/omap3beagle.c +index fd24a4a..1236638 100644 +--- a/sound/soc/omap/omap3beagle.c ++++ b/sound/soc/omap/omap3beagle.c +@@ -20,7 +20,10 @@ + */ + + #include <linux/clk.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> + #include <linux/platform_device.h> ++ + #include <sound/core.h> + #include <sound/pcm.h> + #include <sound/soc.h> +@@ -35,6 +38,9 @@ + #include "omap-pcm.h" + #include "../codecs/twl4030.h" + ++#define TB_HEADPHONE_GPIO 56 ++#define TB_HEADPHONE_IRQ OMAP_GPIO_IRQ(TB_HEADPHONE_GPIO) ++ + static int omap3beagle_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) + { +@@ -103,6 +109,33 @@ static struct snd_soc_device omap3beagle_snd_devdata = { + + static struct platform_device *omap3beagle_snd_device; + ++static void jack_work_func(struct work_struct *wq) ++{ ++ struct snd_soc_device *socdev = platform_get_drvdata(omap3beagle_snd_device); ++ struct snd_soc_codec *codec = socdev->codec; ++ ++ snd_soc_dapm_sync(codec); ++} ++DECLARE_WORK(jack_work, jack_work_func); ++ ++static irqreturn_t touchbook_headphone_event(int irq, void *snd) ++{ ++ int status = gpio_get_value(TB_HEADPHONE_GPIO); ++ struct snd_soc_device *socdev = platform_get_drvdata(omap3beagle_snd_device); ++ struct snd_soc_codec *codec = socdev->codec; ++ ++ if(status) { ++ snd_soc_dapm_disable_pin(codec, "HFL"); ++ snd_soc_dapm_disable_pin(codec, "HFR"); ++ } else { ++ snd_soc_dapm_enable_pin(codec, "HFL"); ++ snd_soc_dapm_enable_pin(codec, "HFR"); ++ } ++ ++ schedule_work(&jack_work); ++ return IRQ_HANDLED; ++} ++ + static int __init omap3beagle_soc_init(void) + { + int ret; +@@ -123,10 +156,22 @@ static int __init omap3beagle_soc_init(void) + omap3beagle_snd_devdata.dev = &omap3beagle_snd_device->dev; + *(unsigned int *)omap3beagle_dai.cpu_dai->private_data = 1; /* McBSP2 */ + ++ /* Touch Book -- headphone jack sensor */ ++ omap_set_gpio_debounce(TB_HEADPHONE_GPIO, 1); ++ omap_set_gpio_debounce_time(TB_HEADPHONE_GPIO, 0xff); ++ ++ ret = request_irq(TB_HEADPHONE_IRQ, touchbook_headphone_event, IRQF_TRIGGER_RISING | ++ IRQF_TRIGGER_FALLING, "touchbook_headphone", omap3beagle_snd_device); ++ if (ret < 0) ++ goto err1; ++ + ret = platform_device_add(omap3beagle_snd_device); + if (ret) + goto err1; + ++ /* Detect headphone status */ ++ touchbook_headphone_event(0, omap3beagle_snd_device); ++ + return 0; + + err1: |