Commit | Line | Data |
---|---|---|
af56b1c2 JB |
1 | /* sound/soc/s3c24xx/s3c64xx-i2s-v4.c |
2 | * | |
3 | * ALSA SoC Audio Layer - S3C64XX I2Sv4 driver | |
4 | * Copyright (c) 2010 Samsung Electronics Co. Ltd | |
5 | * Author: Jaswinder Singh <jassi.brar@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/clk.h> | |
13 | #include <linux/gpio.h> | |
14 | #include <linux/io.h> | |
15 | ||
16 | #include <sound/soc.h> | |
17 | #include <sound/pcm_params.h> | |
18 | ||
f0fba2ad | 19 | #include <plat/audio.h> |
af56b1c2 JB |
20 | |
21 | #include <mach/map.h> | |
22 | #include <mach/dma.h> | |
23 | ||
24 | #include "s3c-dma.h" | |
25 | #include "regs-i2s-v2.h" | |
26 | #include "s3c64xx-i2s.h" | |
27 | ||
28 | static struct s3c2410_dma_client s3c64xx_dma_client_out = { | |
29 | .name = "I2Sv4 PCM Stereo out" | |
30 | }; | |
31 | ||
32 | static struct s3c2410_dma_client s3c64xx_dma_client_in = { | |
33 | .name = "I2Sv4 PCM Stereo in" | |
34 | }; | |
35 | ||
36 | static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_out; | |
37 | static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_in; | |
38 | static struct s3c_i2sv2_info s3c64xx_i2sv4; | |
39 | ||
f0fba2ad | 40 | static int s3c64xx_i2sv4_probe(struct snd_soc_dai *dai) |
af56b1c2 | 41 | { |
f0fba2ad LG |
42 | struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4; |
43 | int ret = 0; | |
af56b1c2 | 44 | |
f0fba2ad | 45 | snd_soc_dai_set_drvdata(dai, i2s); |
af56b1c2 | 46 | |
f0fba2ad LG |
47 | ret = s3c_i2sv2_probe(dai, i2s, i2s->base); |
48 | ||
49 | return ret; | |
af56b1c2 JB |
50 | } |
51 | ||
52 | static int s3c_i2sv4_hw_params(struct snd_pcm_substream *substream, | |
53 | struct snd_pcm_hw_params *params, | |
54 | struct snd_soc_dai *cpu_dai) | |
55 | { | |
f0fba2ad | 56 | struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); |
af56b1c2 JB |
57 | struct s3c_dma_params *dma_data; |
58 | u32 iismod; | |
59 | ||
60 | dev_dbg(cpu_dai->dev, "Entered %s\n", __func__); | |
61 | ||
62 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
63 | dma_data = i2s->dma_playback; | |
64 | else | |
65 | dma_data = i2s->dma_capture; | |
66 | ||
67 | snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); | |
68 | ||
69 | iismod = readl(i2s->regs + S3C2412_IISMOD); | |
70 | dev_dbg(cpu_dai->dev, "%s: r: IISMOD: %x\n", __func__, iismod); | |
71 | ||
72 | iismod &= ~S3C64XX_IISMOD_BLC_MASK; | |
73 | switch (params_format(params)) { | |
74 | case SNDRV_PCM_FORMAT_S8: | |
75 | iismod |= S3C64XX_IISMOD_BLC_8BIT; | |
76 | break; | |
77 | case SNDRV_PCM_FORMAT_S16_LE: | |
78 | break; | |
79 | case SNDRV_PCM_FORMAT_S24_LE: | |
80 | iismod |= S3C64XX_IISMOD_BLC_24BIT; | |
81 | break; | |
82 | } | |
83 | ||
84 | writel(iismod, i2s->regs + S3C2412_IISMOD); | |
85 | dev_dbg(cpu_dai->dev, "%s: w: IISMOD: %x\n", __func__, iismod); | |
86 | ||
87 | return 0; | |
88 | } | |
89 | ||
90 | static struct snd_soc_dai_ops s3c64xx_i2sv4_dai_ops = { | |
91 | .hw_params = s3c_i2sv4_hw_params, | |
92 | }; | |
93 | ||
f0fba2ad LG |
94 | static struct snd_soc_dai_driver s3c64xx_i2s_v4_dai = { |
95 | .symmetric_rates = 1, | |
96 | .playback = { | |
97 | .channels_min = 2, | |
98 | .channels_max = 2, | |
99 | .rates = S3C64XX_I2S_RATES, | |
100 | .formats = S3C64XX_I2S_FMTS, | |
101 | }, | |
102 | .capture = { | |
103 | .channels_min = 2, | |
104 | .channels_max = 2, | |
105 | .rates = S3C64XX_I2S_RATES, | |
106 | .formats = S3C64XX_I2S_FMTS, | |
107 | }, | |
108 | .probe = s3c64xx_i2sv4_probe, | |
109 | .ops = &s3c64xx_i2sv4_dai_ops, | |
110 | }; | |
111 | ||
af56b1c2 JB |
112 | static __devinit int s3c64xx_i2sv4_dev_probe(struct platform_device *pdev) |
113 | { | |
f0fba2ad | 114 | struct s3c_audio_pdata *i2s_pdata; |
af56b1c2 | 115 | struct s3c_i2sv2_info *i2s; |
f0fba2ad | 116 | struct resource *res; |
af56b1c2 JB |
117 | int ret; |
118 | ||
119 | i2s = &s3c64xx_i2sv4; | |
af56b1c2 JB |
120 | |
121 | i2s->feature |= S3C_FEATURE_CDCLKCON; | |
122 | ||
123 | i2s->dma_capture = &s3c64xx_i2sv4_pcm_stereo_in; | |
124 | i2s->dma_playback = &s3c64xx_i2sv4_pcm_stereo_out; | |
125 | ||
f0fba2ad LG |
126 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); |
127 | if (!res) { | |
128 | dev_err(&pdev->dev, "Unable to get I2S-TX dma resource\n"); | |
129 | return -ENXIO; | |
130 | } | |
131 | i2s->dma_playback->channel = res->start; | |
132 | ||
133 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); | |
134 | if (!res) { | |
135 | dev_err(&pdev->dev, "Unable to get I2S-RX dma resource\n"); | |
136 | return -ENXIO; | |
137 | } | |
138 | i2s->dma_capture->channel = res->start; | |
139 | ||
140 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
141 | if (!res) { | |
142 | dev_err(&pdev->dev, "Unable to get I2S SFR address\n"); | |
143 | return -ENXIO; | |
144 | } | |
145 | ||
146 | if (!request_mem_region(res->start, resource_size(res), | |
147 | "s3c64xx-i2s-v4")) { | |
148 | dev_err(&pdev->dev, "Unable to request SFR region\n"); | |
149 | return -EBUSY; | |
150 | } | |
151 | i2s->dma_capture->dma_addr = res->start + S3C2412_IISRXD; | |
152 | i2s->dma_playback->dma_addr = res->start + S3C2412_IISTXD; | |
af56b1c2 JB |
153 | |
154 | i2s->dma_capture->client = &s3c64xx_dma_client_in; | |
155 | i2s->dma_capture->dma_size = 4; | |
156 | i2s->dma_playback->client = &s3c64xx_dma_client_out; | |
157 | i2s->dma_playback->dma_size = 4; | |
158 | ||
f0fba2ad LG |
159 | i2s->base = res->start; |
160 | ||
161 | i2s_pdata = pdev->dev.platform_data; | |
162 | if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { | |
163 | dev_err(&pdev->dev, "Unable to configure gpio\n"); | |
164 | return -EINVAL; | |
165 | } | |
166 | ||
af56b1c2 JB |
167 | i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus"); |
168 | if (IS_ERR(i2s->iis_cclk)) { | |
169 | dev_err(&pdev->dev, "failed to get audio-bus\n"); | |
170 | ret = PTR_ERR(i2s->iis_cclk); | |
171 | goto err; | |
172 | } | |
173 | ||
174 | clk_enable(i2s->iis_cclk); | |
175 | ||
f0fba2ad | 176 | ret = s3c_i2sv2_register_dai(&pdev->dev, pdev->id, &s3c64xx_i2s_v4_dai); |
af56b1c2 JB |
177 | if (ret != 0) |
178 | goto err_i2sv2; | |
179 | ||
180 | return 0; | |
181 | ||
182 | err_i2sv2: | |
af56b1c2 JB |
183 | clk_put(i2s->iis_cclk); |
184 | err: | |
185 | return ret; | |
186 | } | |
187 | ||
188 | static __devexit int s3c64xx_i2sv4_dev_remove(struct platform_device *pdev) | |
189 | { | |
eaae183f MB |
190 | struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4; |
191 | struct resource *res; | |
192 | ||
f0fba2ad | 193 | snd_soc_unregister_dai(&pdev->dev); |
eaae183f MB |
194 | clk_put(i2s->iis_cclk); |
195 | ||
196 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
197 | if (res) | |
198 | release_mem_region(res->start, resource_size(res)); | |
199 | else | |
200 | dev_warn(&pdev->dev, "Unable to get I2S SFR address\n"); | |
201 | ||
af56b1c2 JB |
202 | return 0; |
203 | } | |
204 | ||
205 | static struct platform_driver s3c64xx_i2sv4_driver = { | |
206 | .probe = s3c64xx_i2sv4_dev_probe, | |
207 | .remove = s3c64xx_i2sv4_dev_remove, | |
208 | .driver = { | |
209 | .name = "s3c64xx-iis-v4", | |
210 | .owner = THIS_MODULE, | |
211 | }, | |
212 | }; | |
213 | ||
214 | static int __init s3c64xx_i2sv4_init(void) | |
215 | { | |
216 | return platform_driver_register(&s3c64xx_i2sv4_driver); | |
217 | } | |
218 | module_init(s3c64xx_i2sv4_init); | |
219 | ||
220 | static void __exit s3c64xx_i2sv4_exit(void) | |
221 | { | |
222 | platform_driver_unregister(&s3c64xx_i2sv4_driver); | |
223 | } | |
224 | module_exit(s3c64xx_i2sv4_exit); | |
225 | ||
226 | /* Module information */ | |
227 | MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@samsung.com>"); | |
228 | MODULE_DESCRIPTION("S3C64XX I2Sv4 SoC Interface"); | |
229 | MODULE_LICENSE("GPL"); | |
960d0697 | 230 | MODULE_ALIAS("platform:s3c64xx-iis-v4"); |