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5033f43c | 1 | /* sound/soc/samsung/s3c2412-i2s.c |
49646dfa BD |
2 | * |
3 | * ALSA Soc Audio Layer - S3C2412 I2S driver | |
4 | * | |
5 | * Copyright (c) 2006 Wolfson Microelectronics PLC. | |
6 | * Graeme Gregory graeme.gregory@wolfsonmicro.com | |
7 | * linux@wolfsonmicro.com | |
8 | * | |
9 | * Copyright (c) 2007, 2004-2005 Simtec Electronics | |
10 | * http://armlinux.simtec.co.uk/ | |
11 | * Ben Dooks <ben@simtec.co.uk> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | */ | |
18 | ||
49646dfa | 19 | #include <linux/delay.h> |
ec976d6e | 20 | #include <linux/gpio.h> |
49646dfa | 21 | #include <linux/clk.h> |
8150bc88 | 22 | #include <linux/io.h> |
da155d5b | 23 | #include <linux/module.h> |
49646dfa | 24 | |
49646dfa | 25 | #include <sound/soc.h> |
0378b6ac | 26 | #include <sound/pcm_params.h> |
49646dfa | 27 | |
abffae64 SK |
28 | #include <mach/gpio-samsung.h> |
29 | #include <plat/gpio-cfg.h> | |
49646dfa | 30 | |
4b640cf3 | 31 | #include "dma.h" |
d07e7ce9 | 32 | #include "regs-i2s-v2.h" |
49646dfa BD |
33 | #include "s3c2412-i2s.h" |
34 | ||
359fdfa6 AB |
35 | #include <linux/platform_data/asoc-s3c.h> |
36 | ||
ea37bd4d | 37 | static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_out = { |
ea37bd4d | 38 | .addr_width = 4, |
49646dfa BD |
39 | }; |
40 | ||
ea37bd4d | 41 | static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_in = { |
ea37bd4d | 42 | .addr_width = 4, |
49646dfa BD |
43 | }; |
44 | ||
dc85447b | 45 | static struct s3c_i2sv2_info s3c2412_i2s; |
49646dfa | 46 | |
f0fba2ad | 47 | static int s3c2412_i2s_probe(struct snd_soc_dai *dai) |
49646dfa | 48 | { |
dc85447b | 49 | int ret; |
49646dfa | 50 | |
ee7d4767 | 51 | pr_debug("Entered %s\n", __func__); |
49646dfa | 52 | |
ea37bd4d SN |
53 | snd_soc_dai_init_dma_data(dai, &s3c2412_i2s_pcm_stereo_out, |
54 | &s3c2412_i2s_pcm_stereo_in); | |
87b132bc | 55 | |
f0fba2ad | 56 | ret = s3c_i2sv2_probe(dai, &s3c2412_i2s, S3C2410_PA_IIS); |
dc85447b BD |
57 | if (ret) |
58 | return ret; | |
49646dfa | 59 | |
dc85447b BD |
60 | s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in; |
61 | s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out; | |
49646dfa | 62 | |
87b132bc | 63 | s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk"); |
7803e329 | 64 | if (IS_ERR(s3c2412_i2s.iis_cclk)) { |
008bec39 | 65 | pr_err("failed to get i2sclk clock\n"); |
7803e329 | 66 | return PTR_ERR(s3c2412_i2s.iis_cclk); |
49646dfa BD |
67 | } |
68 | ||
dc85447b | 69 | /* Set MPLL as the source for IIS CLK */ |
49646dfa | 70 | |
dc85447b | 71 | clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll")); |
77ea6bf7 | 72 | clk_prepare_enable(s3c2412_i2s.iis_cclk); |
49646dfa | 73 | |
dc85447b | 74 | s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk; |
49646dfa | 75 | |
601787c2 SN |
76 | /* Configure the I2S pins (GPE0...GPE4) in correct mode */ |
77 | s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), | |
78 | S3C_GPIO_PULL_NONE); | |
49646dfa | 79 | |
6cab2d3d BD |
80 | return 0; |
81 | } | |
82 | ||
f0fba2ad LG |
83 | static int s3c2412_i2s_remove(struct snd_soc_dai *dai) |
84 | { | |
77ea6bf7 | 85 | clk_disable_unprepare(s3c2412_i2s.iis_cclk); |
f0fba2ad LG |
86 | |
87 | return 0; | |
88 | } | |
89 | ||
9c9b1257 JB |
90 | static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream, |
91 | struct snd_pcm_hw_params *params, | |
92 | struct snd_soc_dai *cpu_dai) | |
93 | { | |
f0fba2ad | 94 | struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); |
9c9b1257 JB |
95 | u32 iismod; |
96 | ||
97 | pr_debug("Entered %s\n", __func__); | |
98 | ||
9c9b1257 JB |
99 | iismod = readl(i2s->regs + S3C2412_IISMOD); |
100 | pr_debug("%s: r: IISMOD: %x\n", __func__, iismod); | |
101 | ||
88ce1465 TB |
102 | switch (params_width(params)) { |
103 | case 8: | |
9c9b1257 JB |
104 | iismod |= S3C2412_IISMOD_8BIT; |
105 | break; | |
88ce1465 | 106 | case 16: |
9c9b1257 JB |
107 | iismod &= ~S3C2412_IISMOD_8BIT; |
108 | break; | |
109 | } | |
110 | ||
111 | writel(iismod, i2s->regs + S3C2412_IISMOD); | |
112 | pr_debug("%s: w: IISMOD: %x\n", __func__, iismod); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
49646dfa BD |
117 | #define S3C2412_I2S_RATES \ |
118 | (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \ | |
119 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ | |
120 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) | |
121 | ||
85e7652d | 122 | static const struct snd_soc_dai_ops s3c2412_i2s_dai_ops = { |
9c9b1257 | 123 | .hw_params = s3c2412_i2s_hw_params, |
6335d055 EM |
124 | }; |
125 | ||
f0fba2ad | 126 | static struct snd_soc_dai_driver s3c2412_i2s_dai = { |
dc85447b | 127 | .probe = s3c2412_i2s_probe, |
f0fba2ad | 128 | .remove = s3c2412_i2s_remove, |
49646dfa BD |
129 | .playback = { |
130 | .channels_min = 2, | |
131 | .channels_max = 2, | |
132 | .rates = S3C2412_I2S_RATES, | |
133 | .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, | |
134 | }, | |
135 | .capture = { | |
136 | .channels_min = 2, | |
137 | .channels_max = 2, | |
138 | .rates = S3C2412_I2S_RATES, | |
139 | .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, | |
140 | }, | |
6335d055 | 141 | .ops = &s3c2412_i2s_dai_ops, |
49646dfa | 142 | }; |
f0fba2ad | 143 | |
eca3b01d KM |
144 | static const struct snd_soc_component_driver s3c2412_i2s_component = { |
145 | .name = "s3c2412-i2s", | |
146 | }; | |
147 | ||
fdca21ad | 148 | static int s3c2412_iis_dev_probe(struct platform_device *pdev) |
f0fba2ad | 149 | { |
a08485d8 | 150 | int ret = 0; |
87b132bc | 151 | struct resource *res; |
359fdfa6 AB |
152 | struct s3c_audio_pdata *pdata = dev_get_platdata(&pdev->dev); |
153 | ||
154 | if (!pdata) { | |
155 | dev_err(&pdev->dev, "missing platform data"); | |
156 | return -ENXIO; | |
157 | } | |
87b132bc VK |
158 | |
159 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
87b132bc | 160 | s3c2412_i2s.regs = devm_ioremap_resource(&pdev->dev, res); |
71864b22 WY |
161 | if (IS_ERR(s3c2412_i2s.regs)) |
162 | return PTR_ERR(s3c2412_i2s.regs); | |
87b132bc | 163 | |
ea37bd4d SN |
164 | s3c2412_i2s_pcm_stereo_out.addr = res->start + S3C2412_IISTXD; |
165 | s3c2412_i2s_pcm_stereo_out.filter_data = pdata->dma_playback; | |
166 | s3c2412_i2s_pcm_stereo_in.addr = res->start + S3C2412_IISRXD; | |
167 | s3c2412_i2s_pcm_stereo_in.filter_data = pdata->dma_capture; | |
a08485d8 | 168 | |
73f5dfc6 MS |
169 | ret = samsung_asoc_dma_platform_register(&pdev->dev, |
170 | pdata->dma_filter, | |
171 | NULL, NULL); | |
a08485d8 | 172 | if (ret) { |
73f5dfc6 | 173 | pr_err("failed to register the DMA: %d\n", ret); |
a08485d8 PV |
174 | return ret; |
175 | } | |
176 | ||
73f5dfc6 MS |
177 | ret = s3c_i2sv2_register_component(&pdev->dev, -1, |
178 | &s3c2412_i2s_component, | |
179 | &s3c2412_i2s_dai); | |
7253e354 | 180 | if (ret) |
73f5dfc6 | 181 | pr_err("failed to register the dai\n"); |
a08485d8 | 182 | |
a08485d8 | 183 | return ret; |
f0fba2ad LG |
184 | } |
185 | ||
f0fba2ad LG |
186 | static struct platform_driver s3c2412_iis_driver = { |
187 | .probe = s3c2412_iis_dev_probe, | |
f0fba2ad LG |
188 | .driver = { |
189 | .name = "s3c2412-iis", | |
f0fba2ad LG |
190 | }, |
191 | }; | |
49646dfa | 192 | |
e00c3f55 | 193 | module_platform_driver(s3c2412_iis_driver); |
3f4b783c | 194 | |
49646dfa BD |
195 | /* Module information */ |
196 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); | |
197 | MODULE_DESCRIPTION("S3C2412 I2S SoC Interface"); | |
198 | MODULE_LICENSE("GPL"); | |
960d0697 | 199 | MODULE_ALIAS("platform:s3c2412-iis"); |