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18#include <linux/errno.h>
19#include <linux/module.h>
20#include <linux/moduleparam.h>
21#include <linux/of.h>
22#include <linux/of_platform.h>
23#include <linux/device.h>
24#include <linux/i2c.h>
25#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/soc.h>
28#include <asm/mach-types.h>
29
30#include "../codecs/tlv320aic23.h"
31#include "imx-ssi.h"
32#include "imx-audmux.h"
33
34#define CODEC_CLOCK 12000000
35
36static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
37 struct snd_pcm_hw_params *params)
38{
39 struct snd_soc_pcm_runtime *rtd = substream->private_data;
40 struct snd_soc_dai *codec_dai = rtd->codec_dai;
41 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
42 int ret;
43
44 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
45 CODEC_CLOCK, SND_SOC_CLOCK_OUT);
46 if (ret) {
47 dev_err(cpu_dai->dev,
48 "Failed to set the codec sysclk.\n");
49 return ret;
50 }
51
52 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
53
54 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
55 SND_SOC_CLOCK_IN);
56
57 if (ret && ret != -EINVAL) {
58 dev_err(cpu_dai->dev,
59 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
60 return ret;
61 }
62
63 return 0;
64}
65
66static const struct snd_soc_ops eukrea_tlv320_snd_ops = {
67 .hw_params = eukrea_tlv320_hw_params,
68};
69
70static struct snd_soc_dai_link eukrea_tlv320_dai = {
71 .name = "tlv320aic23",
72 .stream_name = "TLV320AIC23",
73 .codec_dai_name = "tlv320aic23-hifi",
74 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
75 SND_SOC_DAIFMT_CBM_CFM,
76 .ops = &eukrea_tlv320_snd_ops,
77};
78
79static struct snd_soc_card eukrea_tlv320 = {
80 .owner = THIS_MODULE,
81 .dai_link = &eukrea_tlv320_dai,
82 .num_links = 1,
83};
84
85static int eukrea_tlv320_probe(struct platform_device *pdev)
86{
87 int ret;
88 int int_port = 0, ext_port;
89 struct device_node *np = pdev->dev.of_node;
90 struct device_node *ssi_np = NULL, *codec_np = NULL;
91
92 eukrea_tlv320.dev = &pdev->dev;
93 if (np) {
94 ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
95 "eukrea,model");
96 if (ret) {
97 dev_err(&pdev->dev,
98 "eukrea,model node missing or invalid.\n");
99 goto err;
100 }
101
102 ssi_np = of_parse_phandle(pdev->dev.of_node,
103 "ssi-controller", 0);
104 if (!ssi_np) {
105 dev_err(&pdev->dev,
106 "ssi-controller missing or invalid.\n");
107 ret = -ENODEV;
108 goto err;
109 }
110
111 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
112 if (codec_np)
113 eukrea_tlv320_dai.codec_of_node = codec_np;
114 else
115 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");
116
117 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
118 if (ret) {
119 dev_err(&pdev->dev,
120 "fsl,mux-int-port node missing or invalid.\n");
121 return ret;
122 }
123 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
124 if (ret) {
125 dev_err(&pdev->dev,
126 "fsl,mux-ext-port node missing or invalid.\n");
127 return ret;
128 }
129
130
131
132
133
134 int_port--;
135 ext_port--;
136
137 eukrea_tlv320_dai.cpu_of_node = ssi_np;
138 eukrea_tlv320_dai.platform_of_node = ssi_np;
139 } else {
140 eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0";
141 eukrea_tlv320_dai.platform_name = "imx-ssi.0";
142 eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a";
143 eukrea_tlv320.name = "cpuimx-audio";
144 }
145
146 if (machine_is_eukrea_cpuimx27() ||
147 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
148 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
149 IMX_AUDMUX_V1_PCR_SYN |
150 IMX_AUDMUX_V1_PCR_TFSDIR |
151 IMX_AUDMUX_V1_PCR_TCLKDIR |
152 IMX_AUDMUX_V1_PCR_RFSDIR |
153 IMX_AUDMUX_V1_PCR_RCLKDIR |
154 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
155 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
156 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
157 );
158 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
159 IMX_AUDMUX_V1_PCR_SYN |
160 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
161 );
162 } else if (machine_is_eukrea_cpuimx25sd() ||
163 machine_is_eukrea_cpuimx35sd() ||
164 machine_is_eukrea_cpuimx51sd() ||
165 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
166 if (!np)
167 ext_port = machine_is_eukrea_cpuimx25sd() ?
168 4 : 3;
169
170 imx_audmux_v2_configure_port(int_port,
171 IMX_AUDMUX_V2_PTCR_SYN |
172 IMX_AUDMUX_V2_PTCR_TFSDIR |
173 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
174 IMX_AUDMUX_V2_PTCR_TCLKDIR |
175 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
176 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
177 );
178 imx_audmux_v2_configure_port(ext_port,
179 IMX_AUDMUX_V2_PTCR_SYN,
180 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
181 );
182 } else {
183 if (np) {
184
185
186
187 dev_err(&pdev->dev,
188 "Missing or invalid audmux DT node.\n");
189 return -ENODEV;
190 } else {
191
192
193
194 return 0;
195 }
196 }
197
198 ret = snd_soc_register_card(&eukrea_tlv320);
199err:
200 if (ret)
201 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
202 of_node_put(ssi_np);
203
204 return ret;
205}
206
207static int eukrea_tlv320_remove(struct platform_device *pdev)
208{
209 snd_soc_unregister_card(&eukrea_tlv320);
210
211 return 0;
212}
213
214static const struct of_device_id imx_tlv320_dt_ids[] = {
215 { .compatible = "eukrea,asoc-tlv320"},
216 { }
217};
218MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
219
220static struct platform_driver eukrea_tlv320_driver = {
221 .driver = {
222 .name = "eukrea_tlv320",
223 .of_match_table = imx_tlv320_dt_ids,
224 },
225 .probe = eukrea_tlv320_probe,
226 .remove = eukrea_tlv320_remove,
227};
228
229module_platform_driver(eukrea_tlv320_driver);
230
231MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
232MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
233MODULE_LICENSE("GPL");
234MODULE_ALIAS("platform:eukrea_tlv320");
235
