This patch adds the jack detection in mid-86 machine driver

Signed-off-by: Harsha Priya priya.harsha@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/mid-x86/mfld_machine.c | 186 ++++++++++++++++++++++++++++++++------ 1 files changed, 159 insertions(+), 27 deletions(-)

diff --git a/sound/soc/mid-x86/mfld_machine.c b/sound/soc/mid-x86/mfld_machine.c index 7925851..7abd3fc 100644 --- a/sound/soc/mid-x86/mfld_machine.c +++ b/sound/soc/mid-x86/mfld_machine.c @@ -27,6 +27,7 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/slab.h> +#include <linux/io.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> @@ -35,10 +36,38 @@ #define MID_MONO 1 #define MID_STEREO 2 #define MID_MAX_CAP 5 +#define IRQ_BASE 0xFFFF7FCD +#define IRQ_SIZE 1

static unsigned int hs_switch; static unsigned int lo_dac;

+struct mfld_mc_private { + struct platform_device *socdev; + struct workqueue_struct *mfld_jack_wq; + void __iomem *int_base; + struct snd_soc_codec *codec; +} mc_drv_ctx; + +struct snd_soc_jack mfld_jack; + +/*Headset jack detection DAPM pins */ +static struct snd_soc_jack_pin mfld_jack_pins[] = { + { + .pin = "Headphones", + .mask = SND_JACK_HEADPHONE, + }, + { + .pin = "AMIC1", + .mask = SND_JACK_MICROPHONE, + }, +}; +/* jack detection voltage zones */ +static struct snd_soc_jack_zone mfld_zones[] = { + {SN95031_VOL_START, SN95031_VOL_AM_HS, SND_JACK_HEADPHONE}, + {SN95031_VOL_AM_HS, SN95031_VOL_HS, SND_JACK_HEADSET}, +}; + /* sound card controls */ static const char *headset_switch_text[] = {"Earpiece", "Headset"};

@@ -67,13 +96,11 @@ static int headset_set_switch(struct snd_kcontrol *kcontrol,

if (ucontrol->value.integer.value[0]) { pr_debug("hs_set HS path\n"); - snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTL"); - snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTR"); + snd_soc_dapm_enable_pin(&codec->dapm, "Headphones"); snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); } else { pr_debug("hs_set EP path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL"); - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR"); + snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); } snd_soc_dapm_sync(&codec->dapm); @@ -91,12 +118,10 @@ static void lo_enable_out_pins(struct snd_soc_codec *codec) snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT"); snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT"); if (hs_switch) { - snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTL"); - snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTR"); + snd_soc_dapm_enable_pin(&codec->dapm, "Headphones"); snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); } else { - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL"); - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR"); + snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); } } @@ -130,8 +155,7 @@ static int lo_set_switch(struct snd_kcontrol *kcontrol,

case 1: pr_debug("set hs path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL"); - snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR"); + snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22); break; @@ -162,12 +186,36 @@ static const struct snd_kcontrol_new mfld_snd_controls[] = { lo_get_switch, lo_set_switch), };

+static const struct snd_soc_dapm_widget mfld_widgets[] = { + SND_SOC_DAPM_HP("Headphones", NULL), + SND_SOC_DAPM_MIC("Mic", NULL), +}; + +static const struct snd_soc_dapm_route mfld_map[] = { + {"Headphones", NULL, "HPOUTR"}, + {"Headphones", NULL, "HPOUTL"}, + {"Mic", NULL, "AMIC1"}, +}; + static int mfld_init(struct snd_soc_pcm_runtime *runtime) { struct snd_soc_codec *codec = runtime->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; int ret_val;

+ /* Add jack sense widgets */ + snd_soc_dapm_new_controls(dapm, mfld_widgets, ARRAY_SIZE(mfld_widgets)); + + /* Set up the map */ + snd_soc_dapm_add_routes(dapm, mfld_map, ARRAY_SIZE(mfld_map)); + + /* always connected */ + snd_soc_dapm_enable_pin(dapm, "Headphones"); + snd_soc_dapm_enable_pin(dapm, "Mic"); + snd_soc_dapm_sync(dapm); + + mc_drv_ctx.codec = codec; + ret_val = snd_soc_add_controls(codec, mfld_snd_controls, ARRAY_SIZE(mfld_snd_controls)); if (ret_val) { @@ -175,8 +223,7 @@ static int mfld_init(struct snd_soc_pcm_runtime *runtime) return ret_val; } /* default is earpiece pin, userspace sets it explcitly */ - snd_soc_dapm_disable_pin(dapm, "HPOUTL"); - snd_soc_dapm_disable_pin(dapm, "HPOUTR"); + snd_soc_dapm_disable_pin(dapm, "Headphones"); /* default is lineout NC, userspace sets it explcitly */ snd_soc_dapm_disable_pin(dapm, "LINEOUTL"); snd_soc_dapm_disable_pin(dapm, "LINEOUTR"); @@ -185,7 +232,32 @@ static int mfld_init(struct snd_soc_pcm_runtime *runtime) /* we dont use linein in this so set to NC */ snd_soc_dapm_disable_pin(dapm, "LINEINL"); snd_soc_dapm_disable_pin(dapm, "LINEINR"); - return snd_soc_dapm_sync(dapm); + snd_soc_dapm_sync(dapm); + + /* Headset jack detection */ + ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack", + SND_JACK_HEADSET | SND_JACK_BTN_0 | + SND_JACK_BTN_1, &mfld_jack); + + if (ret_val) { + pr_err("jack creation failed\n"); + return ret_val; + } + + ret_val = snd_soc_jack_add_pins(&mfld_jack, + ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins); + if (ret_val) { + pr_err("adding jack pins failed\n"); + return ret_val; + } + ret_val = snd_soc_jack_add_zones(&mfld_jack, + ARRAY_SIZE(mfld_zones), mfld_zones); + if (ret_val) { + pr_err("adding jack zones failed\n"); + return ret_val; + } + disable_jack_btn(codec); + return ret_val; }

struct snd_soc_dai_link mfld_msic_dailink[] = { @@ -234,37 +306,97 @@ static struct snd_soc_card snd_soc_card_mfld = { .num_links = ARRAY_SIZE(mfld_msic_dailink), };

+void snd_mfld_jack_detection(struct work_struct *work) +{ + struct mfld_jack_msg_wq *jack_msg = + container_of(work, struct mfld_jack_msg_wq, wq); + + sn95031_jack_detection(&mfld_jack, jack_msg); + kfree(jack_msg); +} + +static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev) +{ + struct mfld_jack_msg_wq *jack_msg; + struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev; + + jack_msg = kzalloc(sizeof(*jack_msg), GFP_ATOMIC); + memcpy_fromio(&jack_msg->intr_id, + ((void *)(mc_private->int_base)), + sizeof(u8)); + jack_msg->codec = mc_private->codec; + pr_debug("snd_mfld_jack_intr_handler called value %x\n", + jack_msg->intr_id); + INIT_WORK(&jack_msg->wq, snd_mfld_jack_detection); + queue_work(mc_private->mfld_jack_wq, &jack_msg->wq); + + return IRQ_HANDLED; +} + static int __devinit snd_mfld_mc_probe(struct platform_device *pdev) { - struct platform_device *socdev; - int ret_val = 0; + int ret_val = 0, irq;

pr_debug("snd_mfld_mc_probe called\n");

- socdev = platform_device_alloc("soc-audio", -1); - if (!socdev) { + /* retrive the irq number */ + irq = platform_get_irq(pdev, 0); + /* audio interrupt base of SRAM location where + * interrupts are stored by System FW */ + mc_drv_ctx.int_base = ioremap_nocache(IRQ_BASE, IRQ_SIZE); + if (!mc_drv_ctx.int_base) { + pr_err("Mapping of cache failed\n"); + ret_val = -ENOMEM; + goto unalloc; + } + /* create botoom half handler for interrupt */ + mc_drv_ctx.mfld_jack_wq = create_workqueue("mfld_jack_wq"); + if (!mc_drv_ctx.mfld_jack_wq) { + pr_err("cannot create jack workqueue\n"); + ret_val = -ENOMEM; + goto unalloc; + } + /* register for interrupt */ + ret_val = request_irq(irq, snd_mfld_jack_intr_handler, + IRQF_SHARED, pdev->dev.driver->name, + &mc_drv_ctx); + if (ret_val) { + pr_err("cannot register IRQ\n"); + goto destroy_wq; + } + /* create soc device */ + mc_drv_ctx.socdev = platform_device_alloc("soc-audio", -1); + if (!mc_drv_ctx.socdev) { pr_err("soc-audio device allocation failed\n"); - return -ENOMEM; + ret_val = -ENOMEM; + goto destroy_wq; } - platform_set_drvdata(socdev, &snd_soc_card_mfld); - ret_val = platform_device_add(socdev); + platform_set_drvdata(mc_drv_ctx.socdev, &snd_soc_card_mfld); + ret_val = platform_device_add(mc_drv_ctx.socdev); if (ret_val) { pr_err("Unable to add soc-audio device, err %d\n", ret_val); - platform_device_put(socdev); + goto unregister; } - - platform_set_drvdata(pdev, socdev); - + platform_set_drvdata(pdev, &mc_drv_ctx); pr_debug("successfully exited probe\n"); return ret_val; + +unregister: + platform_device_put(mc_drv_ctx.socdev); +destroy_wq: + destroy_workqueue(mc_drv_ctx.mfld_jack_wq); +unalloc: + return ret_val; }

static int __devexit snd_mfld_mc_remove(struct platform_device *pdev) { - struct platform_device *socdev = platform_get_drvdata(pdev); - pr_debug("snd_mfld_mc_remove called\n"); + struct mfld_mc_private *mc_private_data = platform_get_drvdata(pdev);

- platform_device_unregister(socdev); + pr_debug("snd_mfld_mc_remove called\n"); + free_irq(platform_get_irq(pdev, 0), mc_private_data); + destroy_workqueue(mc_private_data->mfld_jack_wq); + platform_device_unregister(mc_private_data->socdev); platform_set_drvdata(pdev, NULL); return 0; }