sound/soc/imx/mx27vis-aic32x4.c

   1 /*
   2  * mx27vis-aic32x4.c
   3  *
   4  * Copyright 2011 Vista Silicon S.L.
   5  *
   6  * Author: Javier Martin <javier.martin@vista-silicon.com>
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  21  * MA 02110-1301, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/device.h>
  27 #include <linux/i2c.h>
  28 #include <linux/gpio.h>
  29 #include <sound/core.h>
  30 #include <sound/pcm.h>
  31 #include <sound/soc.h>
  32 #include <sound/soc-dapm.h>
  33 #include <sound/tlv.h>
  34 #include <asm/mach-types.h>
  35 #include <mach/audmux.h>
  36 #include <mach/iomux-mx27.h>
  37
  38 #include "../codecs/tlv320aic32x4.h"
  39 #include "imx-ssi.h"
  40
  41 #define MX27VIS_AMP_GAIN        0
  42 #define MX27VIS_AMP_MUTE        1
  43
  44 #define MX27VIS_PIN_G0          (GPIO_PORTF + 9)
  45 #define MX27VIS_PIN_G1          (GPIO_PORTF + 8)
  46 #define MX27VIS_PIN_SDL         (GPIO_PORTE + 5)
  47 #define MX27VIS_PIN_SDR         (GPIO_PORTF + 7)
  48
  49 static int mx27vis_amp_gain;
  50 static int mx27vis_amp_mute;
  51
  52 static const int mx27vis_amp_pins[] = {
  53         MX27VIS_PIN_G0 | GPIO_GPIO | GPIO_OUT,
  54         MX27VIS_PIN_G1 | GPIO_GPIO | GPIO_OUT,
  55         MX27VIS_PIN_SDL | GPIO_GPIO | GPIO_OUT,
  56         MX27VIS_PIN_SDR | GPIO_GPIO | GPIO_OUT,
  57 };
  58
  59 static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
  60                             struct snd_pcm_hw_params *params)
  61 {
  62         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  63         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  64         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  65         int ret;
  66         u32 dai_format;
  67
  68         dai_format = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
  69                 SND_SOC_DAIFMT_CBM_CFM;
  70
  71         /* set codec DAI configuration */
  72         snd_soc_dai_set_fmt(codec_dai, dai_format);
  73
  74         /* set cpu DAI configuration */
  75         snd_soc_dai_set_fmt(cpu_dai, dai_format);
  76
  77         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  78                                      25000000, SND_SOC_CLOCK_OUT);
  79         if (ret) {
  80                 pr_err("%s: failed setting codec sysclk\n", __func__);
  81                 return ret;
  82         }
  83
  84         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
  85                                 SND_SOC_CLOCK_IN);
  86         if (ret) {
  87                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
  88                 return ret;
  89         }
  90
  91         return 0;
  92 }
  93
  94 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
  95         .hw_params      = mx27vis_aic32x4_hw_params,
  96 };
  97
  98 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
  99                             struct snd_ctl_elem_value *ucontrol)
 100 {
 101         struct soc_mixer_control *mc =
 102                 (struct soc_mixer_control *)kcontrol->private_value;
 103         int value = ucontrol->value.integer.value[0];
 104         unsigned int reg = mc->reg;
 105         int max = mc->max;
 106
 107         if (value > max)
 108                 return -EINVAL;
 109
 110         switch (reg) {
 111         case MX27VIS_AMP_GAIN:
 112                 gpio_set_value(MX27VIS_PIN_G0, value & 1);
 113                 gpio_set_value(MX27VIS_PIN_G1, value >> 1);
 114                 mx27vis_amp_gain = value;
 115                 break;
 116         case MX27VIS_AMP_MUTE:
 117                 gpio_set_value(MX27VIS_PIN_SDL, value & 1);
 118                 gpio_set_value(MX27VIS_PIN_SDR, value >> 1);
 119                 mx27vis_amp_mute = value;
 120                 break;
 121         }
 122         return 0;
 123 }
 124
 125 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
 126                             struct snd_ctl_elem_value *ucontrol)
 127 {
 128         struct soc_mixer_control *mc =
 129                 (struct soc_mixer_control *)kcontrol->private_value;
 130         unsigned int reg = mc->reg;
 131
 132         switch (reg) {
 133         case MX27VIS_AMP_GAIN:
 134                 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
 135                 break;
 136         case MX27VIS_AMP_MUTE:
 137                 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
 138                 break;
 139         }
 140         return 0;
 141 }
 142
 143 /* From 6dB to 24dB in steps of 6dB */
 144 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
 145
 146 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
 147         SOC_DAPM_PIN_SWITCH("External Mic"),
 148         SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
 149                        mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
 150         SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
 151                        mx27vis_amp_get, mx27vis_amp_set),
 152 };
 153
 154 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
 155         SND_SOC_DAPM_MIC("External Mic", NULL),
 156 };
 157
 158 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
 159         {"Mic Bias", NULL, "External Mic"},
 160         {"IN1_R", NULL, "Mic Bias"},
 161         {"IN2_R", NULL, "Mic Bias"},
 162         {"IN3_R", NULL, "Mic Bias"},
 163         {"IN1_L", NULL, "Mic Bias"},
 164         {"IN2_L", NULL, "Mic Bias"},
 165         {"IN3_L", NULL, "Mic Bias"},
 166 };
 167
 168 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
 169         .name           = "tlv320aic32x4",
 170         .stream_name    = "TLV320AIC32X4",
 171         .codec_dai_name = "tlv320aic32x4-hifi",
 172         .platform_name  = "imx-pcm-audio.0",
 173         .codec_name     = "tlv320aic32x4.0-0018",
 174         .cpu_dai_name   = "imx-ssi.0",
 175         .ops            = &mx27vis_aic32x4_snd_ops,
 176 };
 177
 178 static struct snd_soc_card mx27vis_aic32x4 = {
 179         .name           = "visstrim_m10-audio",
 180         .owner          = THIS_MODULE,
 181         .dai_link       = &mx27vis_aic32x4_dai,
 182         .num_links      = 1,
 183         .controls       = mx27vis_aic32x4_controls,
 184         .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
 185         .dapm_widgets   = aic32x4_dapm_widgets,
 186         .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
 187         .dapm_routes    = aic32x4_dapm_routes,
 188         .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
 189 };
 190
 191 static struct platform_device *mx27vis_aic32x4_snd_device;
 192
 193 static int __init mx27vis_aic32x4_init(void)
 194 {
 195         int ret;
 196
 197         mx27vis_aic32x4_snd_device = platform_device_alloc("soc-audio", -1);
 198         if (!mx27vis_aic32x4_snd_device)
 199                 return -ENOMEM;
 200
 201         platform_set_drvdata(mx27vis_aic32x4_snd_device, &mx27vis_aic32x4);
 202         ret = platform_device_add(mx27vis_aic32x4_snd_device);
 203
 204         if (ret) {
 205                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 206                 platform_device_put(mx27vis_aic32x4_snd_device);
 207         }
 208
 209         /* Connect SSI0 as clock slave to SSI1 external pins */
 210         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 211                         MXC_AUDMUX_V1_PCR_SYN |
 212                         MXC_AUDMUX_V1_PCR_TFSDIR |
 213                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 214                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
 215                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
 216         );
 217         mxc_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
 218                         MXC_AUDMUX_V1_PCR_SYN |
 219                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 220         );
 221
 222         ret = mxc_gpio_setup_multiple_pins(mx27vis_amp_pins,
 223                         ARRAY_SIZE(mx27vis_amp_pins), "MX27VIS_AMP");
 224         if (ret) {
 225                 printk(KERN_ERR "ASoC: unable to setup gpios\n");
 226                 platform_device_put(mx27vis_aic32x4_snd_device);
 227         }
 228
 229         return ret;
 230 }
 231
 232 static void __exit mx27vis_aic32x4_exit(void)
 233 {
 234         platform_device_unregister(mx27vis_aic32x4_snd_device);
 235 }
 236
 237 module_init(mx27vis_aic32x4_init);
 238 module_exit(mx27vis_aic32x4_exit);
 239
 240 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
 241 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
 242 MODULE_LICENSE("GPL");