| /* |
| * omap3pandora.c -- SoC audio for Pandora Handheld Console |
| * |
| * Author: GraÅžvydas Ignotas <notasas@gmail.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/platform_device.h> |
| #include <linux/gpio.h> |
| #include <linux/delay.h> |
| |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| |
| #include <asm/mach-types.h> |
| |
| #include "omap-mcbsp.h" |
| #include "omap-pcm.h" |
| #include "../codecs/twl4030.h" |
| |
| #define OMAP3_PANDORA_DAC_POWER_GPIO 118 |
| #define OMAP3_PANDORA_AMP_POWER_GPIO 14 |
| |
| #define PREFIX "ASoC omap3pandora: " |
| |
| static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, unsigned int fmt) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
| int ret; |
| |
| /* Set codec DAI configuration */ |
| ret = snd_soc_dai_set_fmt(codec_dai, fmt); |
| if (ret < 0) { |
| pr_err(PREFIX "can't set codec DAI configuration\n"); |
| return ret; |
| } |
| |
| /* Set cpu DAI configuration */ |
| ret = snd_soc_dai_set_fmt(cpu_dai, fmt); |
| if (ret < 0) { |
| pr_err(PREFIX "can't set cpu DAI configuration\n"); |
| return ret; |
| } |
| |
| /* Set the codec system clock for DAC and ADC */ |
| ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| pr_err(PREFIX "can't set codec system clock\n"); |
| return ret; |
| } |
| |
| /* Set McBSP clock to external */ |
| ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
| 256 * params_rate(params), |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| pr_err(PREFIX "can't set cpu system clock\n"); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); |
| if (ret < 0) { |
| pr_err(PREFIX "can't set SRG clock divider\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| return omap3pandora_cmn_hw_params(substream, params, |
| SND_SOC_DAIFMT_I2S | |
| SND_SOC_DAIFMT_IB_NF | |
| SND_SOC_DAIFMT_CBS_CFS); |
| } |
| |
| static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| return omap3pandora_cmn_hw_params(substream, params, |
| SND_SOC_DAIFMT_I2S | |
| SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS); |
| } |
| |
| static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *k, int event) |
| { |
| if (SND_SOC_DAPM_EVENT_ON(event)) { |
| gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
| gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); |
| } else { |
| gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); |
| mdelay(1); |
| gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Audio paths on Pandora board: |
| * |
| * |O| ---> PCM DAC +-> AMP -> Headphone Jack |
| * |M| A +--------> Line Out |
| * |A| <~~clk~~+ |
| * |P| <--- TWL4030 <--------- Line In and MICs |
| */ |
| static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = { |
| SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
| 0, 0, NULL, 0, omap3pandora_hp_event, |
| SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| SND_SOC_DAPM_LINE("Line Out", NULL), |
| }; |
| |
| static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = { |
| SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
| SND_SOC_DAPM_MIC("Mic (external)", NULL), |
| SND_SOC_DAPM_LINE("Line In", NULL), |
| }; |
| |
| static const struct snd_soc_dapm_route omap3pandora_out_map[] = { |
| {"Headphone Amplifier", NULL, "PCM DAC"}, |
| {"Line Out", NULL, "PCM DAC"}, |
| {"Headphone Jack", NULL, "Headphone Amplifier"}, |
| }; |
| |
| static const struct snd_soc_dapm_route omap3pandora_in_map[] = { |
| {"AUXL", NULL, "Line In"}, |
| {"AUXR", NULL, "Line In"}, |
| |
| {"MAINMIC", NULL, "Mic Bias 1"}, |
| {"Mic Bias 1", NULL, "Mic (internal)"}, |
| |
| {"SUBMIC", NULL, "Mic Bias 2"}, |
| {"Mic Bias 2", NULL, "Mic (external)"}, |
| }; |
| |
| static int omap3pandora_out_init(struct snd_soc_codec *codec) |
| { |
| int ret; |
| |
| /* All TWL4030 output pins are floating */ |
| snd_soc_dapm_nc_pin(codec, "OUTL"); |
| snd_soc_dapm_nc_pin(codec, "OUTR"); |
| snd_soc_dapm_nc_pin(codec, "EARPIECE"); |
| snd_soc_dapm_nc_pin(codec, "PREDRIVEL"); |
| snd_soc_dapm_nc_pin(codec, "PREDRIVER"); |
| snd_soc_dapm_nc_pin(codec, "HSOL"); |
| snd_soc_dapm_nc_pin(codec, "HSOR"); |
| snd_soc_dapm_nc_pin(codec, "CARKITL"); |
| snd_soc_dapm_nc_pin(codec, "CARKITR"); |
| snd_soc_dapm_nc_pin(codec, "HFL"); |
| snd_soc_dapm_nc_pin(codec, "HFR"); |
| snd_soc_dapm_nc_pin(codec, "VIBRA"); |
| |
| ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets, |
| ARRAY_SIZE(omap3pandora_out_dapm_widgets)); |
| if (ret < 0) |
| return ret; |
| |
| snd_soc_dapm_add_routes(codec, omap3pandora_out_map, |
| ARRAY_SIZE(omap3pandora_out_map)); |
| |
| return snd_soc_dapm_sync(codec); |
| } |
| |
| static int omap3pandora_in_init(struct snd_soc_codec *codec) |
| { |
| int ret; |
| |
| /* Not comnnected */ |
| snd_soc_dapm_nc_pin(codec, "HSMIC"); |
| snd_soc_dapm_nc_pin(codec, "CARKITMIC"); |
| snd_soc_dapm_nc_pin(codec, "DIGIMIC0"); |
| snd_soc_dapm_nc_pin(codec, "DIGIMIC1"); |
| |
| ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets, |
| ARRAY_SIZE(omap3pandora_in_dapm_widgets)); |
| if (ret < 0) |
| return ret; |
| |
| snd_soc_dapm_add_routes(codec, omap3pandora_in_map, |
| ARRAY_SIZE(omap3pandora_in_map)); |
| |
| return snd_soc_dapm_sync(codec); |
| } |
| |
| static struct snd_soc_ops omap3pandora_out_ops = { |
| .hw_params = omap3pandora_out_hw_params, |
| }; |
| |
| static struct snd_soc_ops omap3pandora_in_ops = { |
| .hw_params = omap3pandora_in_hw_params, |
| }; |
| |
| /* Digital audio interface glue - connects codec <--> CPU */ |
| static struct snd_soc_dai_link omap3pandora_dai[] = { |
| { |
| .name = "PCM1773", |
| .stream_name = "HiFi Out", |
| .cpu_dai = &omap_mcbsp_dai[0], |
| .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
| .ops = &omap3pandora_out_ops, |
| .init = omap3pandora_out_init, |
| }, { |
| .name = "TWL4030", |
| .stream_name = "Line/Mic In", |
| .cpu_dai = &omap_mcbsp_dai[1], |
| .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
| .ops = &omap3pandora_in_ops, |
| .init = omap3pandora_in_init, |
| } |
| }; |
| |
| /* SoC card */ |
| static struct snd_soc_card snd_soc_card_omap3pandora = { |
| .name = "omap3pandora", |
| .platform = &omap_soc_platform, |
| .dai_link = omap3pandora_dai, |
| .num_links = ARRAY_SIZE(omap3pandora_dai), |
| }; |
| |
| /* Audio subsystem */ |
| static struct snd_soc_device omap3pandora_snd_data = { |
| .card = &snd_soc_card_omap3pandora, |
| .codec_dev = &soc_codec_dev_twl4030, |
| }; |
| |
| static struct platform_device *omap3pandora_snd_device; |
| |
| static int __init omap3pandora_soc_init(void) |
| { |
| int ret; |
| |
| if (!machine_is_omap3_pandora()) |
| return -ENODEV; |
| |
| pr_info("OMAP3 Pandora SoC init\n"); |
| |
| ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); |
| if (ret) { |
| pr_err(PREFIX "Failed to get DAC power GPIO\n"); |
| return ret; |
| } |
| |
| ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
| if (ret) { |
| pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); |
| goto fail0; |
| } |
| |
| ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); |
| if (ret) { |
| pr_err(PREFIX "Failed to get amp power GPIO\n"); |
| goto fail0; |
| } |
| |
| ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); |
| if (ret) { |
| pr_err(PREFIX "Failed to set amp power GPIO direction\n"); |
| goto fail1; |
| } |
| |
| omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); |
| if (omap3pandora_snd_device == NULL) { |
| pr_err(PREFIX "Platform device allocation failed\n"); |
| ret = -ENOMEM; |
| goto fail1; |
| } |
| |
| platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data); |
| omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev; |
| *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */ |
| *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */ |
| |
| ret = platform_device_add(omap3pandora_snd_device); |
| if (ret) { |
| pr_err(PREFIX "Unable to add platform device\n"); |
| goto fail2; |
| } |
| |
| return 0; |
| |
| fail2: |
| platform_device_put(omap3pandora_snd_device); |
| fail1: |
| gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); |
| fail0: |
| gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); |
| return ret; |
| } |
| module_init(omap3pandora_soc_init); |
| |
| static void __exit omap3pandora_soc_exit(void) |
| { |
| platform_device_unregister(omap3pandora_snd_device); |
| gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); |
| gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); |
| } |
| module_exit(omap3pandora_soc_exit); |
| |
| MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); |
| MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); |
| MODULE_LICENSE("GPL"); |