| /* |
| * mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform |
| * |
| * Copyright (C) 2010 Intel Corp |
| * Author: Vinod Koul <vinod.koul@intel.com> |
| * Author: Harsha Priya <priya.harsha@intel.com> |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/init.h> |
| #include <linux/device.h> |
| #include <linux/slab.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/jack.h> |
| #include "../codecs/sn95031.h" |
| |
| #define MID_MONO 1 |
| #define MID_STEREO 2 |
| #define MID_MAX_CAP 5 |
| #define MFLD_JACK_INSERT 0x04 |
| |
| enum soc_mic_bias_zones { |
| MFLD_MV_START = 0, |
| /* mic bias volutage range for Headphones*/ |
| MFLD_MV_HP = 400, |
| /* mic bias volutage range for American Headset*/ |
| MFLD_MV_AM_HS = 650, |
| /* mic bias volutage range for Headset*/ |
| MFLD_MV_HS = 2000, |
| MFLD_MV_UNDEFINED, |
| }; |
| |
| static unsigned int hs_switch; |
| static unsigned int lo_dac; |
| |
| struct mfld_mc_private { |
| void __iomem *int_base; |
| u8 interrupt_status; |
| }; |
| |
| 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[] = { |
| {MFLD_MV_START, MFLD_MV_AM_HS, SND_JACK_HEADPHONE}, |
| {MFLD_MV_AM_HS, MFLD_MV_HS, SND_JACK_HEADSET}, |
| }; |
| |
| /* sound card controls */ |
| static const char *headset_switch_text[] = {"Earpiece", "Headset"}; |
| |
| static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"}; |
| |
| static const struct soc_enum headset_enum = |
| SOC_ENUM_SINGLE_EXT(2, headset_switch_text); |
| |
| static const struct soc_enum lo_enum = |
| SOC_ENUM_SINGLE_EXT(4, lo_text); |
| |
| static int headset_get_switch(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.integer.value[0] = hs_switch; |
| return 0; |
| } |
| |
| static int headset_set_switch(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| |
| if (ucontrol->value.integer.value[0] == hs_switch) |
| return 0; |
| |
| if (ucontrol->value.integer.value[0]) { |
| pr_debug("hs_set HS path\n"); |
| 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, "Headphones"); |
| snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); |
| } |
| snd_soc_dapm_sync(&codec->dapm); |
| hs_switch = ucontrol->value.integer.value[0]; |
| |
| return 0; |
| } |
| |
| static void lo_enable_out_pins(struct snd_soc_codec *codec) |
| { |
| snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL"); |
| snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR"); |
| snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL"); |
| snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR"); |
| 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, "Headphones"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); |
| } else { |
| snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); |
| snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); |
| } |
| } |
| |
| static int lo_get_switch(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.integer.value[0] = lo_dac; |
| return 0; |
| } |
| |
| static int lo_set_switch(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| |
| if (ucontrol->value.integer.value[0] == lo_dac) |
| return 0; |
| |
| /* we dont want to work with last state of lineout so just enable all |
| * pins and then disable pins not required |
| */ |
| lo_enable_out_pins(codec); |
| switch (ucontrol->value.integer.value[0]) { |
| case 0: |
| pr_debug("set vibra path\n"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT"); |
| snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0); |
| break; |
| |
| case 1: |
| pr_debug("set hs path\n"); |
| 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; |
| |
| case 2: |
| pr_debug("set spkr path\n"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR"); |
| snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44); |
| break; |
| |
| case 3: |
| pr_debug("set null path\n"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL"); |
| snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR"); |
| snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66); |
| break; |
| } |
| snd_soc_dapm_sync(&codec->dapm); |
| lo_dac = ucontrol->value.integer.value[0]; |
| return 0; |
| } |
| |
| static const struct snd_kcontrol_new mfld_snd_controls[] = { |
| SOC_ENUM_EXT("Playback Switch", headset_enum, |
| headset_get_switch, headset_set_switch), |
| SOC_ENUM_EXT("Lineout Mux", lo_enum, |
| 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 void mfld_jack_check(unsigned int intr_status) |
| { |
| struct mfld_jack_data jack_data; |
| |
| jack_data.mfld_jack = &mfld_jack; |
| jack_data.intr_id = intr_status; |
| |
| sn95031_jack_detection(&jack_data); |
| /* TODO: add american headset detection post gpiolib support */ |
| } |
| |
| 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"); |
| |
| ret_val = snd_soc_add_controls(codec, mfld_snd_controls, |
| ARRAY_SIZE(mfld_snd_controls)); |
| if (ret_val) { |
| pr_err("soc_add_controls failed %d", ret_val); |
| return ret_val; |
| } |
| /* default is earpiece pin, userspace sets it explcitly */ |
| 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"); |
| lo_dac = 3; |
| hs_switch = 0; |
| /* we dont use linein in this so set to NC */ |
| snd_soc_dapm_disable_pin(dapm, "LINEINL"); |
| snd_soc_dapm_disable_pin(dapm, "LINEINR"); |
| |
| /* Headset and button 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; |
| } |
| |
| /* we want to check if anything is inserted at boot, |
| * so send a fake event to codec and it will read adc |
| * to find if anything is there or not */ |
| mfld_jack_check(MFLD_JACK_INSERT); |
| return ret_val; |
| } |
| |
| struct snd_soc_dai_link mfld_msic_dailink[] = { |
| { |
| .name = "Medfield Headset", |
| .stream_name = "Headset", |
| .cpu_dai_name = "Headset-cpu-dai", |
| .codec_dai_name = "SN95031 Headset", |
| .codec_name = "sn95031", |
| .platform_name = "sst-platform", |
| .init = mfld_init, |
| }, |
| { |
| .name = "Medfield Speaker", |
| .stream_name = "Speaker", |
| .cpu_dai_name = "Speaker-cpu-dai", |
| .codec_dai_name = "SN95031 Speaker", |
| .codec_name = "sn95031", |
| .platform_name = "sst-platform", |
| .init = NULL, |
| }, |
| { |
| .name = "Medfield Vibra", |
| .stream_name = "Vibra1", |
| .cpu_dai_name = "Vibra1-cpu-dai", |
| .codec_dai_name = "SN95031 Vibra1", |
| .codec_name = "sn95031", |
| .platform_name = "sst-platform", |
| .init = NULL, |
| }, |
| { |
| .name = "Medfield Haptics", |
| .stream_name = "Vibra2", |
| .cpu_dai_name = "Vibra2-cpu-dai", |
| .codec_dai_name = "SN95031 Vibra2", |
| .codec_name = "sn95031", |
| .platform_name = "sst-platform", |
| .init = NULL, |
| }, |
| }; |
| |
| /* SoC card */ |
| static struct snd_soc_card snd_soc_card_mfld = { |
| .name = "medfield_audio", |
| .dai_link = mfld_msic_dailink, |
| .num_links = ARRAY_SIZE(mfld_msic_dailink), |
| }; |
| |
| static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev) |
| { |
| struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev; |
| |
| memcpy_fromio(&mc_private->interrupt_status, |
| ((void *)(mc_private->int_base)), |
| sizeof(u8)); |
| return IRQ_WAKE_THREAD; |
| } |
| |
| static irqreturn_t snd_mfld_jack_detection(int irq, void *data) |
| { |
| struct mfld_mc_private *mc_drv_ctx = (struct mfld_mc_private *) data; |
| |
| if (mfld_jack.codec == NULL) |
| return IRQ_HANDLED; |
| mfld_jack_check(mc_drv_ctx->interrupt_status); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int __devinit snd_mfld_mc_probe(struct platform_device *pdev) |
| { |
| int ret_val = 0, irq; |
| struct mfld_mc_private *mc_drv_ctx; |
| struct resource *irq_mem; |
| |
| pr_debug("snd_mfld_mc_probe called\n"); |
| |
| /* 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 = kzalloc(sizeof(*mc_drv_ctx), GFP_ATOMIC); |
| if (!mc_drv_ctx) { |
| pr_err("allocation failed\n"); |
| return -ENOMEM; |
| } |
| |
| irq_mem = platform_get_resource_byname( |
| pdev, IORESOURCE_MEM, "IRQ_BASE"); |
| if (!irq_mem) { |
| pr_err("no mem resource given\n"); |
| ret_val = -ENODEV; |
| goto unalloc; |
| } |
| mc_drv_ctx->int_base = ioremap_nocache(irq_mem->start, |
| resource_size(irq_mem)); |
| if (!mc_drv_ctx->int_base) { |
| pr_err("Mapping of cache failed\n"); |
| ret_val = -ENOMEM; |
| goto unalloc; |
| } |
| /* register for interrupt */ |
| ret_val = request_threaded_irq(irq, snd_mfld_jack_intr_handler, |
| snd_mfld_jack_detection, |
| IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx); |
| if (ret_val) { |
| pr_err("cannot register IRQ\n"); |
| goto unalloc; |
| } |
| /* register the soc card */ |
| snd_soc_card_mfld.dev = &pdev->dev; |
| ret_val = snd_soc_register_card(&snd_soc_card_mfld); |
| if (ret_val) { |
| pr_debug("snd_soc_register_card failed %d\n", ret_val); |
| goto freeirq; |
| } |
| platform_set_drvdata(pdev, mc_drv_ctx); |
| pr_debug("successfully exited probe\n"); |
| return ret_val; |
| |
| freeirq: |
| free_irq(irq, mc_drv_ctx); |
| unalloc: |
| kfree(mc_drv_ctx); |
| return ret_val; |
| } |
| |
| static int __devexit snd_mfld_mc_remove(struct platform_device *pdev) |
| { |
| struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev); |
| |
| pr_debug("snd_mfld_mc_remove called\n"); |
| free_irq(platform_get_irq(pdev, 0), mc_drv_ctx); |
| snd_soc_unregister_card(&snd_soc_card_mfld); |
| kfree(mc_drv_ctx); |
| platform_set_drvdata(pdev, NULL); |
| return 0; |
| } |
| |
| static struct platform_driver snd_mfld_mc_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "msic_audio", |
| }, |
| .probe = snd_mfld_mc_probe, |
| .remove = __devexit_p(snd_mfld_mc_remove), |
| }; |
| |
| module_platform_driver(snd_mfld_mc_driver); |
| |
| MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver"); |
| MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>"); |
| MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:msic-audio"); |