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ipv6: drop unused "dev" arg of icmpv6_send()
[linux-2.6/next.git] / sound / soc / s3c24xx / s3c64xx-i2s.c
blobcc7edb5f792d86fef69a04ae713587721f2272f9
1 /* sound/soc/s3c24xx/s3c64xx-i2s.c
2 *
3 * ALSA SoC Audio Layer - S3C64XX I2S driver
4 *
5 * Copyright 2008 Openmoko, Inc.
6 * Copyright 2008 Simtec Electronics
7 * Ben Dooks <ben@simtec.co.uk>
8 * http://armlinux.simtec.co.uk/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/device.h>
18 #include <linux/delay.h>
19 #include <linux/clk.h>
20 #include <linux/kernel.h>
21 #include <linux/gpio.h>
22 #include <linux/io.h>
23
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/initval.h>
28 #include <sound/soc.h>
29
30 #include <plat/regs-s3c2412-iis.h>
31 #include <plat/gpio-bank-d.h>
32 #include <plat/gpio-bank-e.h>
33 #include <plat/gpio-cfg.h>
34
35 #include <mach/map.h>
36 #include <mach/dma.h>
37
38 #include "s3c-dma.h"
39 #include "s3c64xx-i2s.h"
40
41 static struct s3c2410_dma_client s3c64xx_dma_client_out = {
42 .name = "I2S PCM Stereo out"
43 };
44
45 static struct s3c2410_dma_client s3c64xx_dma_client_in = {
46 .name = "I2S PCM Stereo in"
47 };
48
49 static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
50 [0] = {
51 .channel = DMACH_I2S0_OUT,
52 .client = &s3c64xx_dma_client_out,
53 .dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISTXD,
54 .dma_size = 4,
55 },
56 [1] = {
57 .channel = DMACH_I2S1_OUT,
58 .client = &s3c64xx_dma_client_out,
59 .dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISTXD,
60 .dma_size = 4,
61 },
62 };
63
64 static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
65 [0] = {
66 .channel = DMACH_I2S0_IN,
67 .client = &s3c64xx_dma_client_in,
68 .dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISRXD,
69 .dma_size = 4,
70 },
71 [1] = {
72 .channel = DMACH_I2S1_IN,
73 .client = &s3c64xx_dma_client_in,
74 .dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISRXD,
75 .dma_size = 4,
76 },
77 };
78
79 static struct s3c_i2sv2_info s3c64xx_i2s[2];
80
81 static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
82 {
83 return cpu_dai->private_data;
84 }
85
86 static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
87 int clk_id, unsigned int freq, int dir)
88 {
89 struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
90 u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
91
92 switch (clk_id) {
93 case S3C64XX_CLKSRC_PCLK:
94 iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
95 break;
96
97 case S3C64XX_CLKSRC_MUX:
98 iismod |= S3C64XX_IISMOD_IMS_SYSMUX;
99 break;
100
101 case S3C64XX_CLKSRC_CDCLK:
102 switch (dir) {
103 case SND_SOC_CLOCK_IN:
104 iismod |= S3C64XX_IISMOD_CDCLKCON;
105 break;
106 case SND_SOC_CLOCK_OUT:
107 iismod &= ~S3C64XX_IISMOD_CDCLKCON;
108 break;
109 default:
110 return -EINVAL;
111 }
112 break;
113
114 default:
115 return -EINVAL;
116 }
117
118 writel(iismod, i2s->regs + S3C2412_IISMOD);
119
120 return 0;
121 }
122
123 struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
124 {
125 struct s3c_i2sv2_info *i2s = to_info(dai);
126 u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
127
128 if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
129 return i2s->iis_cclk;
130 else
131 return i2s->iis_pclk;
132 }
133 EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);
134
135 static int s3c64xx_i2s_probe(struct platform_device *pdev,
136 struct snd_soc_dai *dai)
137 {
138 /* configure GPIO for i2s port */
139 switch (dai->id) {
140 case 0:
141 s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
142 s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
143 s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
144 s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
145 s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
146 break;
147 case 1:
148 s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
149 s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
150 s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
151 s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
152 s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
153 }
154
155 return 0;
156 }
157
158
159 #define S3C64XX_I2S_RATES \
160 (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
161 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
162 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
163
164 #define S3C64XX_I2S_FMTS \
165 (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
166 SNDRV_PCM_FMTBIT_S24_LE)
167
168 static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
169 .set_sysclk = s3c64xx_i2s_set_sysclk,
170 };
171
172 struct snd_soc_dai s3c64xx_i2s_dai[] = {
173 {
174 .name = "s3c64xx-i2s",
175 .id = 0,
176 .probe = s3c64xx_i2s_probe,
177 .playback = {
178 .channels_min = 2,
179 .channels_max = 2,
180 .rates = S3C64XX_I2S_RATES,
181 .formats = S3C64XX_I2S_FMTS,
182 },
183 .capture = {
184 .channels_min = 2,
185 .channels_max = 2,
186 .rates = S3C64XX_I2S_RATES,
187 .formats = S3C64XX_I2S_FMTS,
188 },
189 .ops = &s3c64xx_i2s_dai_ops,
190 .symmetric_rates = 1,
191 },
192 {
193 .name = "s3c64xx-i2s",
194 .id = 1,
195 .probe = s3c64xx_i2s_probe,
196 .playback = {
197 .channels_min = 2,
198 .channels_max = 2,
199 .rates = S3C64XX_I2S_RATES,
200 .formats = S3C64XX_I2S_FMTS,
201 },
202 .capture = {
203 .channels_min = 2,
204 .channels_max = 2,
205 .rates = S3C64XX_I2S_RATES,
206 .formats = S3C64XX_I2S_FMTS,
207 },
208 .ops = &s3c64xx_i2s_dai_ops,
209 .symmetric_rates = 1,
210 },
211 };
212 EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);
213
214 static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
215 {
216 struct s3c_i2sv2_info *i2s;
217 struct snd_soc_dai *dai;
218 int ret;
219
220 if (pdev->id >= ARRAY_SIZE(s3c64xx_i2s)) {
221 dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
222 return -EINVAL;
223 }
224
225 i2s = &s3c64xx_i2s[pdev->id];
226 dai = &s3c64xx_i2s_dai[pdev->id];
227 dai->dev = &pdev->dev;
228
229 i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
230 i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];
231
232 i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
233 if (IS_ERR(i2s->iis_cclk)) {
234 dev_err(&pdev->dev, "failed to get audio-bus\n");
235 ret = PTR_ERR(i2s->iis_cclk);
236 goto err;
237 }
238
239 clk_enable(i2s->iis_cclk);
240
241 ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
242 if (ret)
243 goto err_clk;
244
245 ret = s3c_i2sv2_register_dai(dai);
246 if (ret != 0)
247 goto err_i2sv2;
248
249 return 0;
250
251 err_i2sv2:
252 /* Not implemented for I2Sv2 core yet */
253 err_clk:
254 clk_put(i2s->iis_cclk);
255 err:
256 return ret;
257 }
258
259 static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
260 {
261 dev_err(&pdev->dev, "Device removal not yet supported\n");
262 return 0;
263 }
264
265 static struct platform_driver s3c64xx_iis_driver = {
266 .probe = s3c64xx_iis_dev_probe,
267 .remove = s3c64xx_iis_dev_remove,
268 .driver = {
269 .name = "s3c64xx-iis",
270 .owner = THIS_MODULE,
271 },
272 };
273
274 static int __init s3c64xx_i2s_init(void)
275 {
276 return platform_driver_register(&s3c64xx_iis_driver);
277 }
278 module_init(s3c64xx_i2s_init);
279
280 static void __exit s3c64xx_i2s_exit(void)
281 {
282 platform_driver_unregister(&s3c64xx_iis_driver);
283 }
284 module_exit(s3c64xx_i2s_exit);
285
286 /* Module information */
287 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
288 MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
289 MODULE_LICENSE("GPL");
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