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Linux kernel mirror (for testing)
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linux
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
44static int mx27vis_amp_gain;
45static int mx27vis_amp_mute;
46static int mx27vis_amp_gain0_gpio;
47static int mx27vis_amp_gain1_gpio;
48static int mx27vis_amp_mutel_gpio;
49static int mx27vis_amp_muter_gpio;
50
51static 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
86static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
87 .hw_params = mx27vis_aic32x4_hw_params,
88};
89
90static 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
117static 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 */
136static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
137
138static 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
146static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
147 SND_SOC_DAPM_MIC("External Mic", NULL),
148};
149
150static 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
160static 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
170static 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
183static 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
222static int mx27vis_aic32x4_remove(struct platform_device *pdev)
223{
224 snd_soc_unregister_card(&mx27vis_aic32x4);
225
226 return 0;
227}
228
229static 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
238module_platform_driver(mx27vis_aic32x4_audio_driver);
239
240MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
241MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
242MODULE_LICENSE("GPL");
243MODULE_ALIAS("platform:mx27vis");