diff options
author | Seungwhan Youn <sw.youn@samsung.com> | 2010-10-12 07:51:23 -0400 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-10-15 06:40:58 -0400 |
commit | fc127ccccc5de164d490e8a55a1c2c126293e96f (patch) | |
tree | 8b83396088e266eb0960524325f5a61e69d05a5c /sound/soc/s3c24xx | |
parent | 2c184cd393d1410bb43ac656a6480849fe886b1d (diff) |
ASoC: SAMSUNG: Add S/PDIF CPU driver
This patch adds S/PDIF CPU driver for various Samsung SoCs.
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/s3c24xx')
-rw-r--r-- | sound/soc/s3c24xx/Kconfig | 4 | ||||
-rw-r--r-- | sound/soc/s3c24xx/Makefile | 2 | ||||
-rw-r--r-- | sound/soc/s3c24xx/spdif.c | 501 | ||||
-rw-r--r-- | sound/soc/s3c24xx/spdif.h | 19 |
4 files changed, 526 insertions, 0 deletions
diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig index 7d8235de549e..e2cba93446a5 100644 --- a/sound/soc/s3c24xx/Kconfig +++ b/sound/soc/s3c24xx/Kconfig | |||
@@ -36,6 +36,10 @@ config SND_S3C_SOC_AC97 | |||
36 | tristate | 36 | tristate |
37 | select SND_SOC_AC97_BUS | 37 | select SND_SOC_AC97_BUS |
38 | 38 | ||
39 | config SND_S5P_SOC_SPDIF | ||
40 | tristate | ||
41 | select SND_SOC_SPDIF | ||
42 | |||
39 | config SND_S3C24XX_SOC_NEO1973_WM8753 | 43 | config SND_S3C24XX_SOC_NEO1973_WM8753 |
40 | tristate "SoC I2S Audio support for NEO1973 - WM8753" | 44 | tristate "SoC I2S Audio support for NEO1973 - WM8753" |
41 | depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA01 | 45 | depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA01 |
diff --git a/sound/soc/s3c24xx/Makefile b/sound/soc/s3c24xx/Makefile index dd412a9e88c3..0a02735716de 100644 --- a/sound/soc/s3c24xx/Makefile +++ b/sound/soc/s3c24xx/Makefile | |||
@@ -7,6 +7,7 @@ snd-soc-s3c-ac97-objs := s3c-ac97.o | |||
7 | snd-soc-s3c64xx-i2s-v4-objs := s3c64xx-i2s-v4.o | 7 | snd-soc-s3c64xx-i2s-v4-objs := s3c64xx-i2s-v4.o |
8 | snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o | 8 | snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o |
9 | snd-soc-s3c-pcm-objs := s3c-pcm.o | 9 | snd-soc-s3c-pcm-objs := s3c-pcm.o |
10 | snd-soc-samsung-spdif-objs := spdif.o | ||
10 | 11 | ||
11 | obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o | 12 | obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o |
12 | obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o | 13 | obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o |
@@ -16,6 +17,7 @@ obj-$(CONFIG_SND_S3C64XX_SOC_I2S) += snd-soc-s3c64xx-i2s.o | |||
16 | obj-$(CONFIG_SND_S3C64XX_SOC_I2S_V4) += snd-soc-s3c64xx-i2s-v4.o | 17 | obj-$(CONFIG_SND_S3C64XX_SOC_I2S_V4) += snd-soc-s3c64xx-i2s-v4.o |
17 | obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o | 18 | obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o |
18 | obj-$(CONFIG_SND_S3C_SOC_PCM) += snd-soc-s3c-pcm.o | 19 | obj-$(CONFIG_SND_S3C_SOC_PCM) += snd-soc-s3c-pcm.o |
20 | obj-$(CONFIG_SND_S5P_SOC_SPDIF) += snd-soc-samsung-spdif.o | ||
19 | 21 | ||
20 | # S3C24XX Machine Support | 22 | # S3C24XX Machine Support |
21 | snd-soc-jive-wm8750-objs := jive_wm8750.o | 23 | snd-soc-jive-wm8750-objs := jive_wm8750.o |
diff --git a/sound/soc/s3c24xx/spdif.c b/sound/soc/s3c24xx/spdif.c new file mode 100644 index 000000000000..ce554e9cabcc --- /dev/null +++ b/sound/soc/s3c24xx/spdif.c | |||
@@ -0,0 +1,501 @@ | |||
1 | /* sound/soc/s3c24xx/spdif.c | ||
2 | * | ||
3 | * ALSA SoC Audio Layer - Samsung S/PDIF Controller driver | ||
4 | * | ||
5 | * Copyright (c) 2010 Samsung Electronics Co. Ltd | ||
6 | * http://www.samsung.com/ | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | |||
13 | #include <linux/clk.h> | ||
14 | #include <linux/io.h> | ||
15 | |||
16 | #include <sound/pcm.h> | ||
17 | #include <sound/pcm_params.h> | ||
18 | #include <sound/soc.h> | ||
19 | |||
20 | #include <plat/audio.h> | ||
21 | #include <mach/dma.h> | ||
22 | |||
23 | #include "s3c-dma.h" | ||
24 | #include "spdif.h" | ||
25 | |||
26 | /* Registers */ | ||
27 | #define CLKCON 0x00 | ||
28 | #define CON 0x04 | ||
29 | #define BSTAS 0x08 | ||
30 | #define CSTAS 0x0C | ||
31 | #define DATA_OUTBUF 0x10 | ||
32 | #define DCNT 0x14 | ||
33 | #define BSTAS_S 0x18 | ||
34 | #define DCNT_S 0x1C | ||
35 | |||
36 | #define CLKCTL_MASK 0x7 | ||
37 | #define CLKCTL_MCLK_EXT (0x1 << 2) | ||
38 | #define CLKCTL_PWR_ON (0x1 << 0) | ||
39 | |||
40 | #define CON_MASK 0x3ffffff | ||
41 | #define CON_FIFO_TH_SHIFT 19 | ||
42 | #define CON_FIFO_TH_MASK (0x7 << 19) | ||
43 | #define CON_USERDATA_23RDBIT (0x1 << 12) | ||
44 | |||
45 | #define CON_SW_RESET (0x1 << 5) | ||
46 | |||
47 | #define CON_MCLKDIV_MASK (0x3 << 3) | ||
48 | #define CON_MCLKDIV_256FS (0x0 << 3) | ||
49 | #define CON_MCLKDIV_384FS (0x1 << 3) | ||
50 | #define CON_MCLKDIV_512FS (0x2 << 3) | ||
51 | |||
52 | #define CON_PCM_MASK (0x3 << 1) | ||
53 | #define CON_PCM_16BIT (0x0 << 1) | ||
54 | #define CON_PCM_20BIT (0x1 << 1) | ||
55 | #define CON_PCM_24BIT (0x2 << 1) | ||
56 | |||
57 | #define CON_PCM_DATA (0x1 << 0) | ||
58 | |||
59 | #define CSTAS_MASK 0x3fffffff | ||
60 | #define CSTAS_SAMP_FREQ_MASK (0xF << 24) | ||
61 | #define CSTAS_SAMP_FREQ_44 (0x0 << 24) | ||
62 | #define CSTAS_SAMP_FREQ_48 (0x2 << 24) | ||
63 | #define CSTAS_SAMP_FREQ_32 (0x3 << 24) | ||
64 | #define CSTAS_SAMP_FREQ_96 (0xA << 24) | ||
65 | |||
66 | #define CSTAS_CATEGORY_MASK (0xFF << 8) | ||
67 | #define CSTAS_CATEGORY_CODE_CDP (0x01 << 8) | ||
68 | |||
69 | #define CSTAS_NO_COPYRIGHT (0x1 << 2) | ||
70 | |||
71 | /** | ||
72 | * struct samsung_spdif_info - Samsung S/PDIF Controller information | ||
73 | * @lock: Spin lock for S/PDIF. | ||
74 | * @dev: The parent device passed to use from the probe. | ||
75 | * @regs: The pointer to the device register block. | ||
76 | * @clk_rate: Current clock rate for calcurate ratio. | ||
77 | * @pclk: The peri-clock pointer for spdif master operation. | ||
78 | * @sclk: The source clock pointer for making sync signals. | ||
79 | * @save_clkcon: Backup clkcon reg. in suspend. | ||
80 | * @save_con: Backup con reg. in suspend. | ||
81 | * @save_cstas: Backup cstas reg. in suspend. | ||
82 | * @dma_playback: DMA information for playback channel. | ||
83 | */ | ||
84 | struct samsung_spdif_info { | ||
85 | spinlock_t lock; | ||
86 | struct device *dev; | ||
87 | void __iomem *regs; | ||
88 | unsigned long clk_rate; | ||
89 | struct clk *pclk; | ||
90 | struct clk *sclk; | ||
91 | u32 saved_clkcon; | ||
92 | u32 saved_con; | ||
93 | u32 saved_cstas; | ||
94 | struct s3c_dma_params *dma_playback; | ||
95 | }; | ||
96 | |||
97 | static struct s3c2410_dma_client spdif_dma_client_out = { | ||
98 | .name = "S/PDIF Stereo out", | ||
99 | }; | ||
100 | |||
101 | static struct s3c_dma_params spdif_stereo_out; | ||
102 | static struct samsung_spdif_info spdif_info; | ||
103 | |||
104 | static inline struct samsung_spdif_info *to_info(struct snd_soc_dai *cpu_dai) | ||
105 | { | ||
106 | return snd_soc_dai_get_drvdata(cpu_dai); | ||
107 | } | ||
108 | |||
109 | static void spdif_snd_txctrl(struct samsung_spdif_info *spdif, int on) | ||
110 | { | ||
111 | void __iomem *regs = spdif->regs; | ||
112 | u32 clkcon; | ||
113 | |||
114 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
115 | |||
116 | clkcon = readl(regs + CLKCON) & CLKCTL_MASK; | ||
117 | if (on) | ||
118 | writel(clkcon | CLKCTL_PWR_ON, regs + CLKCON); | ||
119 | else | ||
120 | writel(clkcon & ~CLKCTL_PWR_ON, regs + CLKCON); | ||
121 | } | ||
122 | |||
123 | static int spdif_set_sysclk(struct snd_soc_dai *cpu_dai, | ||
124 | int clk_id, unsigned int freq, int dir) | ||
125 | { | ||
126 | struct samsung_spdif_info *spdif = to_info(cpu_dai); | ||
127 | u32 clkcon; | ||
128 | |||
129 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
130 | |||
131 | clkcon = readl(spdif->regs + CLKCON); | ||
132 | |||
133 | if (clk_id == SND_SOC_SPDIF_INT_MCLK) | ||
134 | clkcon &= ~CLKCTL_MCLK_EXT; | ||
135 | else | ||
136 | clkcon |= CLKCTL_MCLK_EXT; | ||
137 | |||
138 | writel(clkcon, spdif->regs + CLKCON); | ||
139 | |||
140 | spdif->clk_rate = freq; | ||
141 | |||
142 | return 0; | ||
143 | } | ||
144 | |||
145 | static int spdif_trigger(struct snd_pcm_substream *substream, int cmd, | ||
146 | struct snd_soc_dai *dai) | ||
147 | { | ||
148 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | ||
149 | struct samsung_spdif_info *spdif = to_info(rtd->cpu_dai); | ||
150 | unsigned long flags; | ||
151 | |||
152 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
153 | |||
154 | switch (cmd) { | ||
155 | case SNDRV_PCM_TRIGGER_START: | ||
156 | case SNDRV_PCM_TRIGGER_RESUME: | ||
157 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | ||
158 | spin_lock_irqsave(&spdif->lock, flags); | ||
159 | spdif_snd_txctrl(spdif, 1); | ||
160 | spin_unlock_irqrestore(&spdif->lock, flags); | ||
161 | break; | ||
162 | case SNDRV_PCM_TRIGGER_STOP: | ||
163 | case SNDRV_PCM_TRIGGER_SUSPEND: | ||
164 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | ||
165 | spin_lock_irqsave(&spdif->lock, flags); | ||
166 | spdif_snd_txctrl(spdif, 0); | ||
167 | spin_unlock_irqrestore(&spdif->lock, flags); | ||
168 | break; | ||
169 | default: | ||
170 | return -EINVAL; | ||
171 | } | ||
172 | |||
173 | return 0; | ||
174 | } | ||
175 | |||
176 | static int spdif_sysclk_ratios[] = { | ||
177 | 512, 384, 256, | ||
178 | }; | ||
179 | |||
180 | static int spdif_hw_params(struct snd_pcm_substream *substream, | ||
181 | struct snd_pcm_hw_params *params, | ||
182 | struct snd_soc_dai *socdai) | ||
183 | { | ||
184 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | ||
185 | struct samsung_spdif_info *spdif = to_info(rtd->cpu_dai); | ||
186 | void __iomem *regs = spdif->regs; | ||
187 | struct s3c_dma_params *dma_data; | ||
188 | u32 con, clkcon, cstas; | ||
189 | unsigned long flags; | ||
190 | int i, ratio; | ||
191 | |||
192 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
193 | |||
194 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | ||
195 | dma_data = spdif->dma_playback; | ||
196 | else { | ||
197 | dev_err(spdif->dev, "Capture is not supported\n"); | ||
198 | return -EINVAL; | ||
199 | } | ||
200 | |||
201 | snd_soc_dai_set_dma_data(rtd->cpu_dai, substream, dma_data); | ||
202 | |||
203 | spin_lock_irqsave(&spdif->lock, flags); | ||
204 | |||
205 | con = readl(regs + CON) & CON_MASK; | ||
206 | cstas = readl(regs + CSTAS) & CSTAS_MASK; | ||
207 | clkcon = readl(regs + CLKCON) & CLKCTL_MASK; | ||
208 | |||
209 | con &= ~CON_FIFO_TH_MASK; | ||
210 | con |= (0x7 << CON_FIFO_TH_SHIFT); | ||
211 | con |= CON_USERDATA_23RDBIT; | ||
212 | con |= CON_PCM_DATA; | ||
213 | |||
214 | con &= ~CON_PCM_MASK; | ||
215 | switch (params_format(params)) { | ||
216 | case SNDRV_PCM_FORMAT_S16_LE: | ||
217 | con |= CON_PCM_16BIT; | ||
218 | break; | ||
219 | default: | ||
220 | dev_err(spdif->dev, "Unsupported data size.\n"); | ||
221 | goto err; | ||
222 | } | ||
223 | |||
224 | ratio = spdif->clk_rate / params_rate(params); | ||
225 | for (i = 0; i < ARRAY_SIZE(spdif_sysclk_ratios); i++) | ||
226 | if (ratio == spdif_sysclk_ratios[i]) | ||
227 | break; | ||
228 | if (i == ARRAY_SIZE(spdif_sysclk_ratios)) { | ||
229 | dev_err(spdif->dev, "Invalid clock ratio %ld/%d\n", | ||
230 | spdif->clk_rate, params_rate(params)); | ||
231 | goto err; | ||
232 | } | ||
233 | |||
234 | con &= ~CON_MCLKDIV_MASK; | ||
235 | switch (ratio) { | ||
236 | case 256: | ||
237 | con |= CON_MCLKDIV_256FS; | ||
238 | break; | ||
239 | case 384: | ||
240 | con |= CON_MCLKDIV_384FS; | ||
241 | break; | ||
242 | case 512: | ||
243 | con |= CON_MCLKDIV_512FS; | ||
244 | break; | ||
245 | } | ||
246 | |||
247 | cstas &= ~CSTAS_SAMP_FREQ_MASK; | ||
248 | switch (params_rate(params)) { | ||
249 | case 44100: | ||
250 | cstas |= CSTAS_SAMP_FREQ_44; | ||
251 | break; | ||
252 | case 48000: | ||
253 | cstas |= CSTAS_SAMP_FREQ_48; | ||
254 | break; | ||
255 | case 32000: | ||
256 | cstas |= CSTAS_SAMP_FREQ_32; | ||
257 | break; | ||
258 | case 96000: | ||
259 | cstas |= CSTAS_SAMP_FREQ_96; | ||
260 | break; | ||
261 | default: | ||
262 | dev_err(spdif->dev, "Invalid sampling rate %d\n", | ||
263 | params_rate(params)); | ||
264 | goto err; | ||
265 | } | ||
266 | |||
267 | cstas &= ~CSTAS_CATEGORY_MASK; | ||
268 | cstas |= CSTAS_CATEGORY_CODE_CDP; | ||
269 | cstas |= CSTAS_NO_COPYRIGHT; | ||
270 | |||
271 | writel(con, regs + CON); | ||
272 | writel(cstas, regs + CSTAS); | ||
273 | writel(clkcon, regs + CLKCON); | ||
274 | |||
275 | spin_unlock_irqrestore(&spdif->lock, flags); | ||
276 | |||
277 | return 0; | ||
278 | err: | ||
279 | spin_unlock_irqrestore(&spdif->lock, flags); | ||
280 | return -EINVAL; | ||
281 | } | ||
282 | |||
283 | static void spdif_shutdown(struct snd_pcm_substream *substream, | ||
284 | struct snd_soc_dai *dai) | ||
285 | { | ||
286 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | ||
287 | struct samsung_spdif_info *spdif = to_info(rtd->cpu_dai); | ||
288 | void __iomem *regs = spdif->regs; | ||
289 | u32 con, clkcon; | ||
290 | |||
291 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
292 | |||
293 | con = readl(regs + CON) & CON_MASK; | ||
294 | clkcon = readl(regs + CLKCON) & CLKCTL_MASK; | ||
295 | |||
296 | writel(con | CON_SW_RESET, regs + CON); | ||
297 | cpu_relax(); | ||
298 | |||
299 | writel(clkcon & ~CLKCTL_PWR_ON, regs + CLKCON); | ||
300 | } | ||
301 | |||
302 | #ifdef CONFIG_PM | ||
303 | static int spdif_suspend(struct snd_soc_dai *cpu_dai) | ||
304 | { | ||
305 | struct samsung_spdif_info *spdif = to_info(cpu_dai); | ||
306 | u32 con = spdif->saved_con; | ||
307 | |||
308 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
309 | |||
310 | spdif->saved_clkcon = readl(spdif->regs + CLKCON) & CLKCTL_MASK; | ||
311 | spdif->saved_con = readl(spdif->regs + CON) & CON_MASK; | ||
312 | spdif->saved_cstas = readl(spdif->regs + CSTAS) & CSTAS_MASK; | ||
313 | |||
314 | writel(con | CON_SW_RESET, spdif->regs + CON); | ||
315 | cpu_relax(); | ||
316 | |||
317 | return 0; | ||
318 | } | ||
319 | |||
320 | static int spdif_resume(struct snd_soc_dai *cpu_dai) | ||
321 | { | ||
322 | struct samsung_spdif_info *spdif = to_info(cpu_dai); | ||
323 | |||
324 | dev_dbg(spdif->dev, "Entered %s\n", __func__); | ||
325 | |||
326 | writel(spdif->saved_clkcon, spdif->regs + CLKCON); | ||
327 | writel(spdif->saved_con, spdif->regs + CON); | ||
328 | writel(spdif->saved_cstas, spdif->regs + CSTAS); | ||
329 | |||
330 | return 0; | ||
331 | } | ||
332 | #else | ||
333 | #define spdif_suspend NULL | ||
334 | #define spdif_resume NULL | ||
335 | #endif | ||
336 | |||
337 | static struct snd_soc_dai_ops spdif_dai_ops = { | ||
338 | .set_sysclk = spdif_set_sysclk, | ||
339 | .trigger = spdif_trigger, | ||
340 | .hw_params = spdif_hw_params, | ||
341 | .shutdown = spdif_shutdown, | ||
342 | }; | ||
343 | |||
344 | struct snd_soc_dai_driver samsung_spdif_dai = { | ||
345 | .name = "samsung-spdif", | ||
346 | .playback = { | ||
347 | .stream_name = "S/PDIF Playback", | ||
348 | .channels_min = 2, | ||
349 | .channels_max = 2, | ||
350 | .rates = (SNDRV_PCM_RATE_32000 | | ||
351 | SNDRV_PCM_RATE_44100 | | ||
352 | SNDRV_PCM_RATE_48000 | | ||
353 | SNDRV_PCM_RATE_96000), | ||
354 | .formats = SNDRV_PCM_FMTBIT_S16_LE, }, | ||
355 | .ops = &spdif_dai_ops, | ||
356 | .suspend = spdif_suspend, | ||
357 | .resume = spdif_resume, | ||
358 | }; | ||
359 | |||
360 | static __devinit int spdif_probe(struct platform_device *pdev) | ||
361 | { | ||
362 | struct s3c_audio_pdata *spdif_pdata; | ||
363 | struct resource *mem_res, *dma_res; | ||
364 | struct samsung_spdif_info *spdif; | ||
365 | int ret; | ||
366 | |||
367 | spdif_pdata = pdev->dev.platform_data; | ||
368 | |||
369 | dev_dbg(&pdev->dev, "Entered %s\n", __func__); | ||
370 | |||
371 | dma_res = platform_get_resource(pdev, IORESOURCE_DMA, 0); | ||
372 | if (!dma_res) { | ||
373 | dev_err(&pdev->dev, "Unable to get dma resource.\n"); | ||
374 | return -ENXIO; | ||
375 | } | ||
376 | |||
377 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
378 | if (!mem_res) { | ||
379 | dev_err(&pdev->dev, "Unable to get register resource.\n"); | ||
380 | return -ENXIO; | ||
381 | } | ||
382 | |||
383 | if (spdif_pdata && spdif_pdata->cfg_gpio | ||
384 | && spdif_pdata->cfg_gpio(pdev)) { | ||
385 | dev_err(&pdev->dev, "Unable to configure GPIO pins\n"); | ||
386 | return -EINVAL; | ||
387 | } | ||
388 | |||
389 | spdif = &spdif_info; | ||
390 | spdif->dev = &pdev->dev; | ||
391 | |||
392 | spin_lock_init(&spdif->lock); | ||
393 | |||
394 | spdif->pclk = clk_get(&pdev->dev, "spdif"); | ||
395 | if (IS_ERR(spdif->pclk)) { | ||
396 | dev_err(&pdev->dev, "failed to get peri-clock\n"); | ||
397 | ret = -ENOENT; | ||
398 | goto err0; | ||
399 | } | ||
400 | clk_enable(spdif->pclk); | ||
401 | |||
402 | spdif->sclk = clk_get(&pdev->dev, "sclk_spdif"); | ||
403 | if (IS_ERR(spdif->sclk)) { | ||
404 | dev_err(&pdev->dev, "failed to get internal source clock\n"); | ||
405 | ret = -ENOENT; | ||
406 | goto err1; | ||
407 | } | ||
408 | clk_enable(spdif->sclk); | ||
409 | |||
410 | /* Request S/PDIF Register's memory region */ | ||
411 | if (!request_mem_region(mem_res->start, | ||
412 | resource_size(mem_res), "samsung-spdif")) { | ||
413 | dev_err(&pdev->dev, "Unable to request register region\n"); | ||
414 | ret = -EBUSY; | ||
415 | goto err2; | ||
416 | } | ||
417 | |||
418 | spdif->regs = ioremap(mem_res->start, 0x100); | ||
419 | if (spdif->regs == NULL) { | ||
420 | dev_err(&pdev->dev, "Cannot ioremap registers\n"); | ||
421 | ret = -ENXIO; | ||
422 | goto err3; | ||
423 | } | ||
424 | |||
425 | dev_set_drvdata(&pdev->dev, spdif); | ||
426 | |||
427 | ret = snd_soc_register_dai(&pdev->dev, &samsung_spdif_dai); | ||
428 | if (ret != 0) { | ||
429 | dev_err(&pdev->dev, "fail to register dai\n"); | ||
430 | goto err4; | ||
431 | } | ||
432 | |||
433 | spdif_stereo_out.dma_size = 2; | ||
434 | spdif_stereo_out.client = &spdif_dma_client_out; | ||
435 | spdif_stereo_out.dma_addr = mem_res->start + DATA_OUTBUF; | ||
436 | spdif_stereo_out.channel = dma_res->start; | ||
437 | |||
438 | spdif->dma_playback = &spdif_stereo_out; | ||
439 | |||
440 | return 0; | ||
441 | |||
442 | err4: | ||
443 | iounmap(spdif->regs); | ||
444 | err3: | ||
445 | release_mem_region(mem_res->start, resource_size(mem_res)); | ||
446 | err2: | ||
447 | clk_disable(spdif->sclk); | ||
448 | clk_put(spdif->sclk); | ||
449 | err1: | ||
450 | clk_disable(spdif->pclk); | ||
451 | clk_put(spdif->pclk); | ||
452 | err0: | ||
453 | return ret; | ||
454 | } | ||
455 | |||
456 | static __devexit int spdif_remove(struct platform_device *pdev) | ||
457 | { | ||
458 | struct samsung_spdif_info *spdif = &spdif_info; | ||
459 | struct resource *mem_res; | ||
460 | |||
461 | snd_soc_unregister_dai(&pdev->dev); | ||
462 | |||
463 | iounmap(spdif->regs); | ||
464 | |||
465 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
466 | if (mem_res) | ||
467 | release_mem_region(mem_res->start, resource_size(mem_res)); | ||
468 | |||
469 | clk_disable(spdif->sclk); | ||
470 | clk_put(spdif->sclk); | ||
471 | clk_disable(spdif->pclk); | ||
472 | clk_put(spdif->pclk); | ||
473 | |||
474 | return 0; | ||
475 | } | ||
476 | |||
477 | static struct platform_driver samsung_spdif_driver = { | ||
478 | .probe = spdif_probe, | ||
479 | .remove = spdif_remove, | ||
480 | .driver = { | ||
481 | .name = "samsung-spdif", | ||
482 | .owner = THIS_MODULE, | ||
483 | }, | ||
484 | }; | ||
485 | |||
486 | static int __init spdif_init(void) | ||
487 | { | ||
488 | return platform_driver_register(&samsung_spdif_driver); | ||
489 | } | ||
490 | module_init(spdif_init); | ||
491 | |||
492 | static void __exit spdif_exit(void) | ||
493 | { | ||
494 | platform_driver_unregister(&samsung_spdif_driver); | ||
495 | } | ||
496 | module_exit(spdif_exit); | ||
497 | |||
498 | MODULE_AUTHOR("Seungwhan Youn, <sw.youn@samsung.com>"); | ||
499 | MODULE_DESCRIPTION("Samsung S/PDIF Controller Driver"); | ||
500 | MODULE_LICENSE("GPL"); | ||
501 | MODULE_ALIAS("platform:samsung-spdif"); | ||
diff --git a/sound/soc/s3c24xx/spdif.h b/sound/soc/s3c24xx/spdif.h new file mode 100644 index 000000000000..3ed55592710f --- /dev/null +++ b/sound/soc/s3c24xx/spdif.h | |||
@@ -0,0 +1,19 @@ | |||
1 | /* sound/soc/s3c24xx/spdif.h | ||
2 | * | ||
3 | * ALSA SoC Audio Layer - Samsung S/PDIF Controller driver | ||
4 | * | ||
5 | * Copyright (c) 2010 Samsung Electronics Co. Ltd | ||
6 | * http://www.samsung.com/ | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | |||
13 | #ifndef __SND_SOC_SAMSUNG_SPDIF_H | ||
14 | #define __SND_SOC_SAMSUNG_SPDIF_H __FILE__ | ||
15 | |||
16 | #define SND_SOC_SPDIF_INT_MCLK 0 | ||
17 | #define SND_SOC_SPDIF_EXT_MCLK 1 | ||
18 | |||
19 | #endif /* __SND_SOC_SAMSUNG_SPDIF_H */ | ||