1/* 2 * sdp4430.c -- SoC audio for TI OMAP4430 SDP 3 * 4 * Author: Misael Lopez Cruz <x0052729@ti.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22#include <linux/clk.h> 23#include <linux/platform_device.h> 24#include <sound/core.h> 25#include <sound/pcm.h> 26#include <sound/soc.h> 27#include <sound/soc-dapm.h> 28 29#include <asm/mach-types.h> 30#include <plat/hardware.h> 31#include <plat/mux.h> 32 33#include "mcpdm.h" 34#include "omap-mcpdm.h" 35#include "omap-pcm.h" 36#include "../codecs/twl6040.h" 37 38static int twl6040_power_mode; 39 40static int sdp4430_hw_params(struct snd_pcm_substream *substream, 41 struct snd_pcm_hw_params *params) 42{ 43 struct snd_soc_pcm_runtime *rtd = substream->private_data; 44 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 45 int clk_id, freq; 46 int ret; 47 48 if (twl6040_power_mode) { 49 clk_id = TWL6040_SYSCLK_SEL_HPPLL; 50 freq = 38400000; 51 } else { 52 clk_id = TWL6040_SYSCLK_SEL_LPPLL; 53 freq = 32768; 54 } 55 56 /* set the codec mclk */ 57 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq, 58 SND_SOC_CLOCK_IN); 59 if (ret) { 60 printk(KERN_ERR "can't set codec system clock\n"); 61 return ret; 62 } 63} 64 65static struct snd_soc_ops sdp4430_ops = { 66 .hw_params = sdp4430_hw_params, 67}; 68 69static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol, 70 struct snd_ctl_elem_value *ucontrol) 71{ 72 ucontrol->value.integer.value[0] = twl6040_power_mode; 73 return 0; 74} 75 76static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol, 77 struct snd_ctl_elem_value *ucontrol) 78{ 79 if (twl6040_power_mode == ucontrol->value.integer.value[0]) 80 return 0; 81 82 twl6040_power_mode = ucontrol->value.integer.value[0]; 83 84 return 1; 85} 86 87static const char *power_texts[] = {"Low-Power", "High-Performance"}; 88 89static const struct soc_enum sdp4430_enum[] = { 90 SOC_ENUM_SINGLE_EXT(2, power_texts), 91}; 92 93static const struct snd_kcontrol_new sdp4430_controls[] = { 94 SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0], 95 sdp4430_get_power_mode, sdp4430_set_power_mode), 96}; 97 98/* SDP4430 machine DAPM */ 99static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = { 100 SND_SOC_DAPM_MIC("Ext Mic", NULL), 101 SND_SOC_DAPM_SPK("Ext Spk", NULL), 102 SND_SOC_DAPM_MIC("Headset Mic", NULL), 103 SND_SOC_DAPM_HP("Headset Stereophone", NULL), 104 SND_SOC_DAPM_SPK("Earphone Spk", NULL), 105}; 106 107static const struct snd_soc_dapm_route audio_map[] = { 108 /* External Mics: MAINMIC, SUBMIC with bias*/ 109 {"MAINMIC", NULL, "Main Mic Bias"}, 110 {"SUBMIC", NULL, "Main Mic Bias"}, 111 {"Main Mic Bias", NULL, "Ext Mic"}, 112 113 /* External Speakers: HFL, HFR */ 114 {"Ext Spk", NULL, "HFL"}, 115 {"Ext Spk", NULL, "HFR"}, 116 117 /* Headset Mic: HSMIC with bias */ 118 {"HSMIC", NULL, "Headset Mic Bias"}, 119 {"Headset Mic Bias", NULL, "Headset Mic"}, 120 121 /* Headset Stereophone (Headphone): HSOL, HSOR */ 122 {"Headset Stereophone", NULL, "HSOL"}, 123 {"Headset Stereophone", NULL, "HSOR"}, 124 125 /* Earphone speaker */ 126 {"Earphone Spk", NULL, "EP"}, 127}; 128 129static int sdp4430_twl6040_init(struct snd_soc_codec *codec) 130{ 131 int ret; 132 133 /* Add SDP4430 specific controls */ 134 ret = snd_soc_add_controls(codec, sdp4430_controls, 135 ARRAY_SIZE(sdp4430_controls)); 136 if (ret) 137 return ret; 138 139 /* Add SDP4430 specific widgets */ 140 ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets, 141 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets)); 142 if (ret) 143 return ret; 144 145 /* Set up SDP4430 specific audio path audio_map */ 146 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 147 148 /* SDP4430 connected pins */ 149 snd_soc_dapm_enable_pin(codec, "Ext Mic"); 150 snd_soc_dapm_enable_pin(codec, "Ext Spk"); 151 snd_soc_dapm_enable_pin(codec, "Headset Mic"); 152 snd_soc_dapm_enable_pin(codec, "Headset Stereophone"); 153 154 /* TWL6040 not connected pins */ 155 snd_soc_dapm_nc_pin(codec, "AFML"); 156 snd_soc_dapm_nc_pin(codec, "AFMR"); 157 158 ret = snd_soc_dapm_sync(codec); 159 160 return ret; 161} 162 163/* Digital audio interface glue - connects codec <--> CPU */ 164static struct snd_soc_dai_link sdp4430_dai = { 165 .name = "TWL6040", 166 .stream_name = "TWL6040", 167 .cpu_dai = &omap_mcpdm_dai, 168 .codec_dai = &twl6040_dai, 169 .init = sdp4430_twl6040_init, 170 .ops = &sdp4430_ops, 171}; 172 173/* Audio machine driver */ 174static struct snd_soc_card snd_soc_sdp4430 = { 175 .name = "SDP4430", 176 .platform = &omap_soc_platform, 177 .dai_link = &sdp4430_dai, 178 .num_links = 1, 179}; 180 181/* Audio subsystem */ 182static struct snd_soc_device sdp4430_snd_devdata = { 183 .card = &snd_soc_sdp4430, 184 .codec_dev = &soc_codec_dev_twl6040, 185}; 186 187static struct platform_device *sdp4430_snd_device; 188 189static int __init sdp4430_soc_init(void) 190{ 191 int ret; 192 193 if (!machine_is_omap_4430sdp()) { 194 pr_debug("Not SDP4430!\n"); 195 return -ENODEV; 196 } 197 printk(KERN_INFO "SDP4430 SoC init\n"); 198 199 sdp4430_snd_device = platform_device_alloc("soc-audio", -1); 200 if (!sdp4430_snd_device) { 201 printk(KERN_ERR "Platform device allocation failed\n"); 202 return -ENOMEM; 203 } 204 205 platform_set_drvdata(sdp4430_snd_device, &sdp4430_snd_devdata); 206 sdp4430_snd_devdata.dev = &sdp4430_snd_device->dev; 207 208 ret = platform_device_add(sdp4430_snd_device); 209 if (ret) 210 goto err; 211 212 /* Codec starts in HP mode */ 213 twl6040_power_mode = 1; 214 215 return 0; 216 217err: 218 printk(KERN_ERR "Unable to add platform device\n"); 219 platform_device_put(sdp4430_snd_device); 220 return ret; 221} 222module_init(sdp4430_soc_init); 223 224static void __exit sdp4430_soc_exit(void) 225{ 226 platform_device_unregister(sdp4430_snd_device); 227} 228module_exit(sdp4430_soc_exit); 229 230MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); 231MODULE_DESCRIPTION("ALSA SoC SDP4430"); 232MODULE_LICENSE("GPL"); 233