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Linux kernel mirror (for testing)
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kernel
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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
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
76static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
77 .hw_params = mx27vis_aic32x4_hw_params,
78};
79
80static 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
107static 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 */
126static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
127
128static 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
136static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
137 SND_SOC_DAPM_MIC("External Mic", NULL),
138};
139
140static 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
150static 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
162static 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
175static 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
214static int mx27vis_aic32x4_remove(struct platform_device *pdev)
215{
216 snd_soc_unregister_card(&mx27vis_aic32x4);
217
218 return 0;
219}
220
221static 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
229module_platform_driver(mx27vis_aic32x4_audio_driver);
230
231MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
232MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
233MODULE_LICENSE("GPL");
234MODULE_ALIAS("platform:mx27vis");