/* * n810.c -- SoC audio for Nokia N810 * * Copyright (C) 2008 Nokia Corporation * * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * 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., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #include <linux/clk.h> #include <linux/i2c.h> #include <linux/platform_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> #include <asm/mach-types.h> #include <linux/gpio.h> #include <linux/module.h> #include <linux/platform_data/asoc-ti-mcbsp.h> #include "omap-mcbsp.h" #define N810_HEADSET_AMP_GPIO 10 #define N810_SPEAKER_AMP_GPIO 101 enum { N810_JACK_DISABLED, N810_JACK_HP, N810_JACK_HS, N810_JACK_MIC, }; static struct clk *sys_clkout2; static struct clk *sys_clkout2_src; static struct clk *func96m_clk; static int n810_spk_func; static int n810_jack_func; static int n810_dmic_func; static void n810_ext_control(struct snd_soc_dapm_context *dapm) { int hp = 0, line1l = 0; switch (n810_jack_func) { case N810_JACK_HS: line1l = 1; case N810_JACK_HP: hp = 1; break; case N810_JACK_MIC: line1l = 1; break; } snd_soc_dapm_mutex_lock(dapm); if (n810_spk_func) snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); else snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk"); if (hp) snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack"); else snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); if (line1l) snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L"); else snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L"); if (n810_dmic_func) snd_soc_dapm_enable_pin_unlocked(dapm, "DMic"); else snd_soc_dapm_disable_pin_unlocked(dapm, "DMic"); snd_soc_dapm_sync_unlocked(dapm); snd_soc_dapm_mutex_unlock(dapm); } static int n810_startup(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2); n810_ext_control(&codec->dapm); return clk_prepare_enable(sys_clkout2); } static void n810_shutdown(struct snd_pcm_substream *substream) { clk_disable_unprepare(sys_clkout2); } static int n810_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; int err; /* Set the codec system clock for DAC and ADC */ err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000, SND_SOC_CLOCK_IN); return err; } static struct snd_soc_ops n810_ops = { .startup = n810_startup, .hw_params = n810_hw_params, .shutdown = n810_shutdown, }; static int n810_get_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.integer.value[0] = n810_spk_func; return 0; } static int n810_set_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); if (n810_spk_func == ucontrol->value.integer.value[0]) return 0; n810_spk_func = ucontrol->value.integer.value[0]; n810_ext_control(&card->dapm); return 1; } static int n810_get_jack(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.integer.value[0] = n810_jack_func; return 0; } static int n810_set_jack(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); if (n810_jack_func == ucontrol->value.integer.value[0]) return 0; n810_jack_func = ucontrol->value.integer.value[0]; n810_ext_control(&card->dapm); return 1; } static int n810_get_input(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.integer.value[0] = n810_dmic_func; return 0; } static int n810_set_input(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); if (n810_dmic_func == ucontrol->value.integer.value[0]) return 0; n810_dmic_func = ucontrol->value.integer.value[0]; n810_ext_control(&card->dapm); return 1; } static int n810_spk_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { if (SND_SOC_DAPM_EVENT_ON(event)) gpio_set_value(N810_SPEAKER_AMP_GPIO, 1); else gpio_set_value(N810_SPEAKER_AMP_GPIO, 0); return 0; } static int n810_jack_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { if (SND_SOC_DAPM_EVENT_ON(event)) gpio_set_value(N810_HEADSET_AMP_GPIO, 1); else gpio_set_value(N810_HEADSET_AMP_GPIO, 0); return 0; } static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = { SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event), SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event), SND_SOC_DAPM_MIC("DMic", NULL), }; static const struct snd_soc_dapm_route audio_map[] = { {"Headphone Jack", NULL, "HPLOUT"}, {"Headphone Jack", NULL, "HPROUT"}, {"Ext Spk", NULL, "LLOUT"}, {"Ext Spk", NULL, "RLOUT"}, {"DMic Rate 64", NULL, "Mic Bias"}, {"Mic Bias", NULL, "DMic"}, }; static const char *spk_function[] = {"Off", "On"}; static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"}; static const char *input_function[] = {"ADC", "Digital Mic"}; static const struct soc_enum n810_enum[] = { SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function), SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function), SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function), }; static const struct snd_kcontrol_new aic33_n810_controls[] = { SOC_ENUM_EXT("Speaker Function", n810_enum[0], n810_get_spk, n810_set_spk), SOC_ENUM_EXT("Jack Function", n810_enum[1], n810_get_jack, n810_set_jack), SOC_ENUM_EXT("Input Select", n810_enum[2], n810_get_input, n810_set_input), }; static int n810_aic33_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; /* Not connected */ snd_soc_dapm_nc_pin(dapm, "MONO_LOUT"); snd_soc_dapm_nc_pin(dapm, "HPLCOM"); snd_soc_dapm_nc_pin(dapm, "HPRCOM"); snd_soc_dapm_nc_pin(dapm, "MIC3L"); snd_soc_dapm_nc_pin(dapm, "MIC3R"); snd_soc_dapm_nc_pin(dapm, "LINE1R"); snd_soc_dapm_nc_pin(dapm, "LINE2L"); snd_soc_dapm_nc_pin(dapm, "LINE2R"); return 0; } /* Digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link n810_dai = { .name = "TLV320AIC33", .stream_name = "AIC33", .cpu_dai_name = "omap-mcbsp.2", .platform_name = "omap-mcbsp.2", .codec_name = "tlv320aic3x-codec.2-0018", .codec_dai_name = "tlv320aic3x-hifi", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .init = n810_aic33_init, .ops = &n810_ops, }; /* Audio machine driver */ static struct snd_soc_card snd_soc_n810 = { .name = "N810", .owner = THIS_MODULE, .dai_link = &n810_dai, .num_links = 1, .controls = aic33_n810_controls, .num_controls = ARRAY_SIZE(aic33_n810_controls), .dapm_widgets = aic33_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets), .dapm_routes = audio_map, .num_dapm_routes = ARRAY_SIZE(audio_map), }; static struct platform_device *n810_snd_device; static int __init n810_soc_init(void) { int err; struct device *dev; if (!of_have_populated_dt() || (!of_machine_is_compatible("nokia,n810") && !of_machine_is_compatible("nokia,n810-wimax"))) return -ENODEV; n810_snd_device = platform_device_alloc("soc-audio", -1); if (!n810_snd_device) return -ENOMEM; platform_set_drvdata(n810_snd_device, &snd_soc_n810); err = platform_device_add(n810_snd_device); if (err) goto err1; dev = &n810_snd_device->dev; sys_clkout2_src = clk_get(dev, "sys_clkout2_src"); if (IS_ERR(sys_clkout2_src)) { dev_err(dev, "Could not get sys_clkout2_src clock\n"); err = PTR_ERR(sys_clkout2_src); goto err2; } sys_clkout2 = clk_get(dev, "sys_clkout2"); if (IS_ERR(sys_clkout2)) { dev_err(dev, "Could not get sys_clkout2\n"); err = PTR_ERR(sys_clkout2); goto err3; } /* * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use * 96 MHz as its parent in order to get 12 MHz */ func96m_clk = clk_get(dev, "func_96m_ck"); if (IS_ERR(func96m_clk)) { dev_err(dev, "Could not get func 96M clock\n"); err = PTR_ERR(func96m_clk); goto err4; } clk_set_parent(sys_clkout2_src, func96m_clk); clk_set_rate(sys_clkout2, 12000000); if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) || (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) { err = -EINVAL; goto err4; } gpio_direction_output(N810_HEADSET_AMP_GPIO, 0); gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0); return 0; err4: clk_put(sys_clkout2); err3: clk_put(sys_clkout2_src); err2: platform_device_del(n810_snd_device); err1: platform_device_put(n810_snd_device); return err; } static void __exit n810_soc_exit(void) { gpio_free(N810_SPEAKER_AMP_GPIO); gpio_free(N810_HEADSET_AMP_GPIO); clk_put(sys_clkout2_src); clk_put(sys_clkout2); clk_put(func96m_clk); platform_device_unregister(n810_snd_device); } module_init(n810_soc_init); module_exit(n810_soc_exit); MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>"); MODULE_DESCRIPTION("ALSA SoC Nokia N810"); MODULE_LICENSE("GPL");