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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 "fsl_ssi.h"
33#include "imx-audmux.h"
34
35#define CODEC_CLOCK 12000000
36
37static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
38 struct snd_pcm_hw_params *params)
39{
40 struct snd_soc_pcm_runtime *rtd = substream->private_data;
41 struct snd_soc_dai *codec_dai = rtd->codec_dai;
42 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
43 int ret;
44
45 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
46 CODEC_CLOCK, SND_SOC_CLOCK_OUT);
47 if (ret) {
48 dev_err(cpu_dai->dev,
49 "Failed to set the codec sysclk.\n");
50 return ret;
51 }
52
53 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
54
55 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
56 SND_SOC_CLOCK_IN);
57
58 if (ret && ret != -EINVAL) {
59 dev_err(cpu_dai->dev,
60 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
61 return ret;
62 }
63
64 return 0;
65}
66
67static struct snd_soc_ops eukrea_tlv320_snd_ops = {
68 .hw_params = eukrea_tlv320_hw_params,
69};
70
71static struct snd_soc_dai_link eukrea_tlv320_dai = {
72 .name = "tlv320aic23",
73 .stream_name = "TLV320AIC23",
74 .codec_dai_name = "tlv320aic23-hifi",
75 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
76 SND_SOC_DAIFMT_CBM_CFM,
77 .ops = &eukrea_tlv320_snd_ops,
78};
79
80static struct snd_soc_card eukrea_tlv320 = {
81 .owner = THIS_MODULE,
82 .dai_link = &eukrea_tlv320_dai,
83 .num_links = 1,
84};
85
86static int eukrea_tlv320_probe(struct platform_device *pdev)
87{
88 int ret;
89 int int_port = 0, ext_port;
90 struct device_node *np = pdev->dev.of_node;
91 struct device_node *ssi_np = NULL, *codec_np = NULL;
92
93 eukrea_tlv320.dev = &pdev->dev;
94 if (np) {
95 ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
96 "eukrea,model");
97 if (ret) {
98 dev_err(&pdev->dev,
99 "eukrea,model node missing or invalid.\n");
100 goto err;
101 }
102
103 ssi_np = of_parse_phandle(pdev->dev.of_node,
104 "ssi-controller", 0);
105 if (!ssi_np) {
106 dev_err(&pdev->dev,
107 "ssi-controller missing or invalid.\n");
108 ret = -ENODEV;
109 goto err;
110 }
111
112 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
113 if (codec_np)
114 eukrea_tlv320_dai.codec_of_node = codec_np;
115 else
116 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");
117
118 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
119 if (ret) {
120 dev_err(&pdev->dev,
121 "fsl,mux-int-port node missing or invalid.\n");
122 return ret;
123 }
124 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
125 if (ret) {
126 dev_err(&pdev->dev,
127 "fsl,mux-ext-port node missing or invalid.\n");
128 return ret;
129 }
130
131
132
133
134
135 int_port--;
136 ext_port--;
137
138 eukrea_tlv320_dai.cpu_of_node = ssi_np;
139 eukrea_tlv320_dai.platform_of_node = ssi_np;
140 } else {
141 eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0";
142 eukrea_tlv320_dai.platform_name = "imx-ssi.0";
143 eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a";
144 eukrea_tlv320.name = "cpuimx-audio";
145 }
146
147 if (machine_is_eukrea_cpuimx27() ||
148 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
149 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
150 IMX_AUDMUX_V1_PCR_SYN |
151 IMX_AUDMUX_V1_PCR_TFSDIR |
152 IMX_AUDMUX_V1_PCR_TCLKDIR |
153 IMX_AUDMUX_V1_PCR_RFSDIR |
154 IMX_AUDMUX_V1_PCR_RCLKDIR |
155 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
156 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
157 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
158 );
159 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
160 IMX_AUDMUX_V1_PCR_SYN |
161 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
162 );
163 } else if (machine_is_eukrea_cpuimx25sd() ||
164 machine_is_eukrea_cpuimx35sd() ||
165 machine_is_eukrea_cpuimx51sd() ||
166 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
167 if (!np)
168 ext_port = machine_is_eukrea_cpuimx25sd() ?
169 4 : 3;
170
171 imx_audmux_v2_configure_port(int_port,
172 IMX_AUDMUX_V2_PTCR_SYN |
173 IMX_AUDMUX_V2_PTCR_TFSDIR |
174 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
175 IMX_AUDMUX_V2_PTCR_TCLKDIR |
176 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
177 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
178 );
179 imx_audmux_v2_configure_port(ext_port,
180 IMX_AUDMUX_V2_PTCR_SYN,
181 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
182 );
183 } else {
184 if (np) {
185
186
187
188 dev_err(&pdev->dev,
189 "Missing or invalid audmux DT node.\n");
190 return -ENODEV;
191 } else {
192
193
194
195 return 0;
196 }
197 }
198
199 ret = snd_soc_register_card(&eukrea_tlv320);
200err:
201 if (ret)
202 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
203 of_node_put(ssi_np);
204
205 return ret;
206}
207
208static int eukrea_tlv320_remove(struct platform_device *pdev)
209{
210 snd_soc_unregister_card(&eukrea_tlv320);
211
212 return 0;
213}
214
215static const struct of_device_id imx_tlv320_dt_ids[] = {
216 { .compatible = "eukrea,asoc-tlv320"},
217 { }
218};
219MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
220
221static struct platform_driver eukrea_tlv320_driver = {
222 .driver = {
223 .name = "eukrea_tlv320",
224 .of_match_table = imx_tlv320_dt_ids,
225 },
226 .probe = eukrea_tlv320_probe,
227 .remove = eukrea_tlv320_remove,
228};
229
230module_platform_driver(eukrea_tlv320_driver);
231
232MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
233MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
234MODULE_LICENSE("GPL");
235MODULE_ALIAS("platform:eukrea_tlv320");
236
