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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         u32 dai_format;
 59 
 60         dai_format = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
 61                 SND_SOC_DAIFMT_CBM_CFM;
 62 
 63         /* set codec DAI configuration */
 64         snd_soc_dai_set_fmt(codec_dai, dai_format);
 65 
 66         /* set cpu DAI configuration */
 67         snd_soc_dai_set_fmt(cpu_dai, dai_format);
 68 
 69         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
 70                                      25000000, SND_SOC_CLOCK_OUT);
 71         if (ret) {
 72                 pr_err("%s: failed setting codec sysclk\n", __func__);
 73                 return ret;
 74         }
 75 
 76         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
 77                                 SND_SOC_CLOCK_IN);
 78         if (ret) {
 79                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
 80                 return ret;
 81         }
 82 
 83         return 0;
 84 }
 85 
 86 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
 87         .hw_params      = mx27vis_aic32x4_hw_params,
 88 };
 89 
 90 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
 91                             struct snd_ctl_elem_value *ucontrol)
 92 {
 93         struct soc_mixer_control *mc =
 94                 (struct soc_mixer_control *)kcontrol->private_value;
 95         int value = ucontrol->value.integer.value[0];
 96         unsigned int reg = mc->reg;
 97         int max = mc->max;
 98 
 99         if (value > max)
100                 return -EINVAL;
101 
102         switch (reg) {
103         case MX27VIS_AMP_GAIN:
104                 gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
105                 gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
106                 mx27vis_amp_gain = value;
107                 break;
108         case MX27VIS_AMP_MUTE:
109                 gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
110                 gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
111                 mx27vis_amp_mute = value;
112                 break;
113         }
114         return 0;
115 }
116 
117 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
118                             struct snd_ctl_elem_value *ucontrol)
119 {
120         struct soc_mixer_control *mc =
121                 (struct soc_mixer_control *)kcontrol->private_value;
122         unsigned int reg = mc->reg;
123 
124         switch (reg) {
125         case MX27VIS_AMP_GAIN:
126                 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
127                 break;
128         case MX27VIS_AMP_MUTE:
129                 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
130                 break;
131         }
132         return 0;
133 }
134 
135 /* From 6dB to 24dB in steps of 6dB */
136 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
137 
138 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
139         SOC_DAPM_PIN_SWITCH("External Mic"),
140         SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
141                        mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
142         SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
143                        mx27vis_amp_get, mx27vis_amp_set),
144 };
145 
146 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
147         SND_SOC_DAPM_MIC("External Mic", NULL),
148 };
149 
150 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
151         {"Mic Bias", NULL, "External Mic"},
152         {"IN1_R", NULL, "Mic Bias"},
153         {"IN2_R", NULL, "Mic Bias"},
154         {"IN3_R", NULL, "Mic Bias"},
155         {"IN1_L", NULL, "Mic Bias"},
156         {"IN2_L", NULL, "Mic Bias"},
157         {"IN3_L", NULL, "Mic Bias"},
158 };
159 
160 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
161         .name           = "tlv320aic32x4",
162         .stream_name    = "TLV320AIC32X4",
163         .codec_dai_name = "tlv320aic32x4-hifi",
164         .platform_name  = "imx-ssi.0",
165         .codec_name     = "tlv320aic32x4.0-0018",
166         .cpu_dai_name   = "imx-ssi.0",
167         .ops            = &mx27vis_aic32x4_snd_ops,
168 };
169 
170 static struct snd_soc_card mx27vis_aic32x4 = {
171         .name           = "visstrim_m10-audio",
172         .owner          = THIS_MODULE,
173         .dai_link       = &mx27vis_aic32x4_dai,
174         .num_links      = 1,
175         .controls       = mx27vis_aic32x4_controls,
176         .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
177         .dapm_widgets   = aic32x4_dapm_widgets,
178         .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
179         .dapm_routes    = aic32x4_dapm_routes,
180         .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
181 };
182 
183 static int mx27vis_aic32x4_probe(struct platform_device *pdev)
184 {
185         struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
186         int ret;
187 
188         if (!pdata) {
189                 dev_err(&pdev->dev, "No platform data supplied\n");
190                 return -EINVAL;
191         }
192 
193         mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
194         mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
195         mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
196         mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
197 
198         mx27vis_aic32x4.dev = &pdev->dev;
199         ret = snd_soc_register_card(&mx27vis_aic32x4);
200         if (ret) {
201                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
202                         ret);
203                 return ret;
204         }
205 
206         /* Connect SSI0 as clock slave to SSI1 external pins */
207         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
208                         IMX_AUDMUX_V1_PCR_SYN |
209                         IMX_AUDMUX_V1_PCR_TFSDIR |
210                         IMX_AUDMUX_V1_PCR_TCLKDIR |
211                         IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
212                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
213         );
214         imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
215                         IMX_AUDMUX_V1_PCR_SYN |
216                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
217         );
218 
219         return ret;
220 }
221 
222 static int mx27vis_aic32x4_remove(struct platform_device *pdev)
223 {
224         snd_soc_unregister_card(&mx27vis_aic32x4);
225 
226         return 0;
227 }
228 
229 static struct platform_driver mx27vis_aic32x4_audio_driver = {
230         .driver = {
231                 .name = "mx27vis",
232                 .owner = THIS_MODULE,
233         },
234         .probe = mx27vis_aic32x4_probe,
235         .remove = mx27vis_aic32x4_remove,
236 };
237 
238 module_platform_driver(mx27vis_aic32x4_audio_driver);
239 
240 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
241 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
242 MODULE_LICENSE("GPL");
243 MODULE_ALIAS("platform:mx27vis");
244 

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