1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // mx27vis-aic32x4.c
4 //
5 // Copyright 2011 Vista Silicon S.L.
6 //
7 // Author: Javier Martin <javier.martin@vista-silicon.com>
8
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/device.h>
12 #include <linux/i2c.h>
13 #include <linux/gpio.h>
14 #include <linux/platform_data/asoc-mx27vis.h>
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/soc.h>
18 #include <sound/soc-dapm.h>
19 #include <sound/tlv.h>
20 #include <asm/mach-types.h>
21
22 #include "../codecs/tlv320aic32x4.h"
23 #include "imx-ssi.h"
24 #include "imx-audmux.h"
25
26 #define MX27VIS_AMP_GAIN 0
27 #define MX27VIS_AMP_MUTE 1
28
29 static int mx27vis_amp_gain;
30 static int mx27vis_amp_mute;
31 static int mx27vis_amp_gain0_gpio;
32 static int mx27vis_amp_gain1_gpio;
33 static int mx27vis_amp_mutel_gpio;
34 static int mx27vis_amp_muter_gpio;
35
mx27vis_aic32x4_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)36 static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
37 struct snd_pcm_hw_params *params)
38 {
39 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
40 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
41 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
42 int ret;
43
44 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
45 25000000, SND_SOC_CLOCK_OUT);
46 if (ret) {
47 pr_err("%s: failed setting codec sysclk\n", __func__);
48 return ret;
49 }
50
51 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
52 SND_SOC_CLOCK_IN);
53 if (ret) {
54 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
55 return ret;
56 }
57
58 return 0;
59 }
60
61 static const struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
62 .hw_params = mx27vis_aic32x4_hw_params,
63 };
64
mx27vis_amp_set(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)65 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
66 struct snd_ctl_elem_value *ucontrol)
67 {
68 struct soc_mixer_control *mc =
69 (struct soc_mixer_control *)kcontrol->private_value;
70 int value = ucontrol->value.integer.value[0];
71 unsigned int reg = mc->reg;
72 int max = mc->max;
73
74 if (value > max)
75 return -EINVAL;
76
77 switch (reg) {
78 case MX27VIS_AMP_GAIN:
79 gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
80 gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
81 mx27vis_amp_gain = value;
82 break;
83 case MX27VIS_AMP_MUTE:
84 gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
85 gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
86 mx27vis_amp_mute = value;
87 break;
88 }
89 return 0;
90 }
91
mx27vis_amp_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)92 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
93 struct snd_ctl_elem_value *ucontrol)
94 {
95 struct soc_mixer_control *mc =
96 (struct soc_mixer_control *)kcontrol->private_value;
97 unsigned int reg = mc->reg;
98
99 switch (reg) {
100 case MX27VIS_AMP_GAIN:
101 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
102 break;
103 case MX27VIS_AMP_MUTE:
104 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
105 break;
106 }
107 return 0;
108 }
109
110 /* From 6dB to 24dB in steps of 6dB */
111 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
112
113 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
114 SOC_DAPM_PIN_SWITCH("External Mic"),
115 SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
116 mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
117 SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
118 mx27vis_amp_get, mx27vis_amp_set),
119 };
120
121 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
122 SND_SOC_DAPM_MIC("External Mic", NULL),
123 };
124
125 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
126 {"Mic Bias", NULL, "External Mic"},
127 {"IN1_R", NULL, "Mic Bias"},
128 {"IN2_R", NULL, "Mic Bias"},
129 {"IN3_R", NULL, "Mic Bias"},
130 {"IN1_L", NULL, "Mic Bias"},
131 {"IN2_L", NULL, "Mic Bias"},
132 {"IN3_L", NULL, "Mic Bias"},
133 };
134
135 SND_SOC_DAILINK_DEFS(hifi,
136 DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")),
137 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic32x4.0-0018",
138 "tlv320aic32x4-hifi")),
139 DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0")));
140
141 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
142 .name = "tlv320aic32x4",
143 .stream_name = "TLV320AIC32X4",
144 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
145 SND_SOC_DAIFMT_CBM_CFM,
146 .ops = &mx27vis_aic32x4_snd_ops,
147 SND_SOC_DAILINK_REG(hifi),
148 };
149
150 static struct snd_soc_card mx27vis_aic32x4 = {
151 .name = "visstrim_m10-audio",
152 .owner = THIS_MODULE,
153 .dai_link = &mx27vis_aic32x4_dai,
154 .num_links = 1,
155 .controls = mx27vis_aic32x4_controls,
156 .num_controls = ARRAY_SIZE(mx27vis_aic32x4_controls),
157 .dapm_widgets = aic32x4_dapm_widgets,
158 .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
159 .dapm_routes = aic32x4_dapm_routes,
160 .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
161 };
162
mx27vis_aic32x4_probe(struct platform_device * pdev)163 static int mx27vis_aic32x4_probe(struct platform_device *pdev)
164 {
165 struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
166 int ret;
167
168 if (!pdata) {
169 dev_err(&pdev->dev, "No platform data supplied\n");
170 return -EINVAL;
171 }
172
173 mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
174 mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
175 mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
176 mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
177
178 mx27vis_aic32x4.dev = &pdev->dev;
179 ret = devm_snd_soc_register_card(&pdev->dev, &mx27vis_aic32x4);
180 if (ret) {
181 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
182 ret);
183 return ret;
184 }
185
186 /* Connect SSI0 as clock slave to SSI1 external pins */
187 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
188 IMX_AUDMUX_V1_PCR_SYN |
189 IMX_AUDMUX_V1_PCR_TFSDIR |
190 IMX_AUDMUX_V1_PCR_TCLKDIR |
191 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
192 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
193 );
194 imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
195 IMX_AUDMUX_V1_PCR_SYN |
196 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
197 );
198
199 return ret;
200 }
201
202 static struct platform_driver mx27vis_aic32x4_audio_driver = {
203 .driver = {
204 .name = "mx27vis",
205 },
206 .probe = mx27vis_aic32x4_probe,
207 };
208
209 module_platform_driver(mx27vis_aic32x4_audio_driver);
210
211 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
212 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
213 MODULE_LICENSE("GPL");
214 MODULE_ALIAS("platform:mx27vis");
215