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18#include <linux/module.h>
19#include <linux/moduleparam.h>
20#include <linux/device.h>
21#include <linux/i2c.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/soc.h>
25#include <asm/mach-types.h>
26
27#include "../codecs/tlv320aic23.h"
28#include "imx-ssi.h"
29#include "imx-audmux.h"
30
31#define CODEC_CLOCK 12000000
32
33static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
34 struct snd_pcm_hw_params *params)
35{
36 struct snd_soc_pcm_runtime *rtd = substream->private_data;
37 struct snd_soc_dai *codec_dai = rtd->codec_dai;
38 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
39 int ret;
40
41 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
42 SND_SOC_DAIFMT_NB_NF |
43 SND_SOC_DAIFMT_CBM_CFM);
44 if (ret) {
45 pr_err("%s: failed set cpu dai format\n", __func__);
46 return ret;
47 }
48
49 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
50 SND_SOC_DAIFMT_NB_NF |
51 SND_SOC_DAIFMT_CBM_CFM);
52 if (ret) {
53 pr_err("%s: failed set codec dai format\n", __func__);
54 return ret;
55 }
56
57 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
58 CODEC_CLOCK, SND_SOC_CLOCK_OUT);
59 if (ret) {
60 pr_err("%s: failed setting codec sysclk\n", __func__);
61 return ret;
62 }
63 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
64
65 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
66 SND_SOC_CLOCK_IN);
67 if (ret) {
68 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
69 return ret;
70 }
71
72 return 0;
73}
74
75static struct snd_soc_ops eukrea_tlv320_snd_ops = {
76 .hw_params = eukrea_tlv320_hw_params,
77};
78
79static struct snd_soc_dai_link eukrea_tlv320_dai = {
80 .name = "tlv320aic23",
81 .stream_name = "TLV320AIC23",
82 .codec_dai_name = "tlv320aic23-hifi",
83 .platform_name = "imx-ssi.0",
84 .codec_name = "tlv320aic23-codec.0-001a",
85 .cpu_dai_name = "imx-ssi.0",
86 .ops = &eukrea_tlv320_snd_ops,
87};
88
89static struct snd_soc_card eukrea_tlv320 = {
90 .name = "cpuimx-audio",
91 .owner = THIS_MODULE,
92 .dai_link = &eukrea_tlv320_dai,
93 .num_links = 1,
94};
95
96static int eukrea_tlv320_probe(struct platform_device *pdev)
97{
98 int ret;
99 int int_port = 0, ext_port;
100
101 if (machine_is_eukrea_cpuimx27()) {
102 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
103 IMX_AUDMUX_V1_PCR_SYN |
104 IMX_AUDMUX_V1_PCR_TFSDIR |
105 IMX_AUDMUX_V1_PCR_TCLKDIR |
106 IMX_AUDMUX_V1_PCR_RFSDIR |
107 IMX_AUDMUX_V1_PCR_RCLKDIR |
108 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
109 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
110 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
111 );
112 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
113 IMX_AUDMUX_V1_PCR_SYN |
114 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
115 );
116 } else if (machine_is_eukrea_cpuimx25sd() ||
117 machine_is_eukrea_cpuimx35sd() ||
118 machine_is_eukrea_cpuimx51sd()) {
119 ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
120 imx_audmux_v2_configure_port(int_port,
121 IMX_AUDMUX_V2_PTCR_SYN |
122 IMX_AUDMUX_V2_PTCR_TFSDIR |
123 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
124 IMX_AUDMUX_V2_PTCR_TCLKDIR |
125 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
126 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
127 );
128 imx_audmux_v2_configure_port(ext_port,
129 IMX_AUDMUX_V2_PTCR_SYN,
130 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
131 );
132 } else {
133
134 return 0;
135 }
136
137 eukrea_tlv320.dev = &pdev->dev;
138 ret = snd_soc_register_card(&eukrea_tlv320);
139 if (ret)
140 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
141
142 return ret;
143}
144
145static int eukrea_tlv320_remove(struct platform_device *pdev)
146{
147 snd_soc_unregister_card(&eukrea_tlv320);
148
149 return 0;
150}
151
152static struct platform_driver eukrea_tlv320_driver = {
153 .driver = {
154 .name = "eukrea_tlv320",
155 .owner = THIS_MODULE,
156 },
157 .probe = eukrea_tlv320_probe,
158 .remove = eukrea_tlv320_remove,};
159
160module_platform_driver(eukrea_tlv320_driver);
161
162MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
163MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
164MODULE_LICENSE("GPL");
165MODULE_ALIAS("platform:eukrea_tlv320");
166
