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Linux/sound/soc/fsl/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 <linux/platform_data/asoc-mx27vis.h>
 30 #include <sound/core.h>
 31 #include <sound/pcm.h>
 32 #include <sound/soc.h>
 33 #include <sound/soc-dapm.h>
 34 #include <sound/tlv.h>
 35 #include <asm/mach-types.h>
 36 
 37 #include "../codecs/tlv320aic32x4.h"
 38 #include "imx-ssi.h"
 39 #include "imx-audmux.h"
 40 
 41 #define MX27VIS_AMP_GAIN        0
 42 #define MX27VIS_AMP_MUTE        1
 43 
 44 static int mx27vis_amp_gain;
 45 static int mx27vis_amp_mute;
 46 static int mx27vis_amp_gain0_gpio;
 47 static int mx27vis_amp_gain1_gpio;
 48 static int mx27vis_amp_mutel_gpio;
 49 static int mx27vis_amp_muter_gpio;
 50 
 51 static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
 52                             struct snd_pcm_hw_params *params)
 53 {
 54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 56         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 57         int ret;
 58 
 59         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
 60                                      25000000, SND_SOC_CLOCK_OUT);
 61         if (ret) {
 62                 pr_err("%s: failed setting codec sysclk\n", __func__);
 63                 return ret;
 64         }
 65 
 66         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
 67                                 SND_SOC_CLOCK_IN);
 68         if (ret) {
 69                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
 70                 return ret;
 71         }
 72 
 73         return 0;
 74 }
 75 
 76 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
 77         .hw_params      = mx27vis_aic32x4_hw_params,
 78 };
 79 
 80 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
 81                             struct snd_ctl_elem_value *ucontrol)
 82 {
 83         struct soc_mixer_control *mc =
 84                 (struct soc_mixer_control *)kcontrol->private_value;
 85         int value = ucontrol->value.integer.value[0];
 86         unsigned int reg = mc->reg;
 87         int max = mc->max;
 88 
 89         if (value > max)
 90                 return -EINVAL;
 91 
 92         switch (reg) {
 93         case MX27VIS_AMP_GAIN:
 94                 gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
 95                 gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
 96                 mx27vis_amp_gain = value;
 97                 break;
 98         case MX27VIS_AMP_MUTE:
 99                 gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
100                 gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
101                 mx27vis_amp_mute = value;
102                 break;
103         }
104         return 0;
105 }
106 
107 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
108                             struct snd_ctl_elem_value *ucontrol)
109 {
110         struct soc_mixer_control *mc =
111                 (struct soc_mixer_control *)kcontrol->private_value;
112         unsigned int reg = mc->reg;
113 
114         switch (reg) {
115         case MX27VIS_AMP_GAIN:
116                 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
117                 break;
118         case MX27VIS_AMP_MUTE:
119                 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
120                 break;
121         }
122         return 0;
123 }
124 
125 /* From 6dB to 24dB in steps of 6dB */
126 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
127 
128 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
129         SOC_DAPM_PIN_SWITCH("External Mic"),
130         SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
131                        mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
132         SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
133                        mx27vis_amp_get, mx27vis_amp_set),
134 };
135 
136 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
137         SND_SOC_DAPM_MIC("External Mic", NULL),
138 };
139 
140 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
141         {"Mic Bias", NULL, "External Mic"},
142         {"IN1_R", NULL, "Mic Bias"},
143         {"IN2_R", NULL, "Mic Bias"},
144         {"IN3_R", NULL, "Mic Bias"},
145         {"IN1_L", NULL, "Mic Bias"},
146         {"IN2_L", NULL, "Mic Bias"},
147         {"IN3_L", NULL, "Mic Bias"},
148 };
149 
150 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
151         .name           = "tlv320aic32x4",
152         .stream_name    = "TLV320AIC32X4",
153         .codec_dai_name = "tlv320aic32x4-hifi",
154         .platform_name  = "imx-ssi.0",
155         .codec_name     = "tlv320aic32x4.0-0018",
156         .cpu_dai_name   = "imx-ssi.0",
157         .dai_fmt        = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
158                           SND_SOC_DAIFMT_CBM_CFM,
159         .ops            = &mx27vis_aic32x4_snd_ops,
160 };
161 
162 static struct snd_soc_card mx27vis_aic32x4 = {
163         .name           = "visstrim_m10-audio",
164         .owner          = THIS_MODULE,
165         .dai_link       = &mx27vis_aic32x4_dai,
166         .num_links      = 1,
167         .controls       = mx27vis_aic32x4_controls,
168         .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
169         .dapm_widgets   = aic32x4_dapm_widgets,
170         .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
171         .dapm_routes    = aic32x4_dapm_routes,
172         .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
173 };
174 
175 static int mx27vis_aic32x4_probe(struct platform_device *pdev)
176 {
177         struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
178         int ret;
179 
180         if (!pdata) {
181                 dev_err(&pdev->dev, "No platform data supplied\n");
182                 return -EINVAL;
183         }
184 
185         mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
186         mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
187         mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
188         mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
189 
190         mx27vis_aic32x4.dev = &pdev->dev;
191         ret = snd_soc_register_card(&mx27vis_aic32x4);
192         if (ret) {
193                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
194                         ret);
195                 return ret;
196         }
197 
198         /* Connect SSI0 as clock slave to SSI1 external pins */
199         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
200                         IMX_AUDMUX_V1_PCR_SYN |
201                         IMX_AUDMUX_V1_PCR_TFSDIR |
202                         IMX_AUDMUX_V1_PCR_TCLKDIR |
203                         IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
204                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
205         );
206         imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
207                         IMX_AUDMUX_V1_PCR_SYN |
208                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
209         );
210 
211         return ret;
212 }
213 
214 static int mx27vis_aic32x4_remove(struct platform_device *pdev)
215 {
216         snd_soc_unregister_card(&mx27vis_aic32x4);
217 
218         return 0;
219 }
220 
221 static struct platform_driver mx27vis_aic32x4_audio_driver = {
222         .driver = {
223                 .name = "mx27vis",
224         },
225         .probe = mx27vis_aic32x4_probe,
226         .remove = mx27vis_aic32x4_remove,
227 };
228 
229 module_platform_driver(mx27vis_aic32x4_audio_driver);
230 
231 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
232 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
233 MODULE_LICENSE("GPL");
234 MODULE_ALIAS("platform:mx27vis");
235 

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