aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/s3c24xx/s3c2412-i2s.c
diff options
context:
space:
mode:
authorGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
committerGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
commitc71c03bda1e86c9d5198c5d83f712e695c4f2a1e (patch)
treeecb166cb3e2b7e2adb3b5e292245fefd23381ac8 /sound/soc/s3c24xx/s3c2412-i2s.c
parentea53c912f8a86a8567697115b6a0d8152beee5c8 (diff)
parent6a00f206debf8a5c8899055726ad127dbeeed098 (diff)
Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp
Conflicts: litmus/sched_cedf.c
Diffstat (limited to 'sound/soc/s3c24xx/s3c2412-i2s.c')
-rw-r--r--sound/soc/s3c24xx/s3c2412-i2s.c190
1 files changed, 0 insertions, 190 deletions
diff --git a/sound/soc/s3c24xx/s3c2412-i2s.c b/sound/soc/s3c24xx/s3c2412-i2s.c
deleted file mode 100644
index 709adef9d043..000000000000
--- a/sound/soc/s3c24xx/s3c2412-i2s.c
+++ /dev/null
@@ -1,190 +0,0 @@
1/* sound/soc/s3c24xx/s3c2412-i2s.c
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
19#include <linux/init.h>
20#include <linux/module.h>
21#include <linux/device.h>
22#include <linux/delay.h>
23#include <linux/gpio.h>
24#include <linux/clk.h>
25#include <linux/kernel.h>
26#include <linux/io.h>
27
28#include <sound/core.h>
29#include <sound/pcm.h>
30#include <sound/pcm_params.h>
31#include <sound/initval.h>
32#include <sound/soc.h>
33#include <mach/hardware.h>
34
35#include <mach/regs-gpio.h>
36#include <mach/dma.h>
37
38#include "s3c-dma.h"
39#include "regs-i2s-v2.h"
40#include "s3c2412-i2s.h"
41
42#define S3C2412_I2S_DEBUG 0
43
44static struct s3c2410_dma_client s3c2412_dma_client_out = {
45 .name = "I2S PCM Stereo out"
46};
47
48static struct s3c2410_dma_client s3c2412_dma_client_in = {
49 .name = "I2S PCM Stereo in"
50};
51
52static struct s3c_dma_params s3c2412_i2s_pcm_stereo_out = {
53 .client = &s3c2412_dma_client_out,
54 .channel = DMACH_I2S_OUT,
55 .dma_addr = S3C2410_PA_IIS + S3C2412_IISTXD,
56 .dma_size = 4,
57};
58
59static struct s3c_dma_params s3c2412_i2s_pcm_stereo_in = {
60 .client = &s3c2412_dma_client_in,
61 .channel = DMACH_I2S_IN,
62 .dma_addr = S3C2410_PA_IIS + S3C2412_IISRXD,
63 .dma_size = 4,
64};
65
66static struct s3c_i2sv2_info s3c2412_i2s;
67
68static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
69{
70 return cpu_dai->private_data;
71}
72
73static int s3c2412_i2s_probe(struct platform_device *pdev,
74 struct snd_soc_dai *dai)
75{
76 int ret;
77
78 pr_debug("Entered %s\n", __func__);
79
80 ret = s3c_i2sv2_probe(pdev, dai, &s3c2412_i2s, S3C2410_PA_IIS);
81 if (ret)
82 return ret;
83
84 s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in;
85 s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out;
86
87 s3c2412_i2s.iis_cclk = clk_get(&pdev->dev, "i2sclk");
88 if (s3c2412_i2s.iis_cclk == NULL) {
89 pr_err("failed to get i2sclk clock\n");
90 iounmap(s3c2412_i2s.regs);
91 return -ENODEV;
92 }
93
94 /* Set MPLL as the source for IIS CLK */
95
96 clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll"));
97 clk_enable(s3c2412_i2s.iis_cclk);
98
99 s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk;
100
101 /* Configure the I2S pins in correct mode */
102 s3c2410_gpio_cfgpin(S3C2410_GPE0, S3C2410_GPE0_I2SLRCK);
103 s3c2410_gpio_cfgpin(S3C2410_GPE1, S3C2410_GPE1_I2SSCLK);
104 s3c2410_gpio_cfgpin(S3C2410_GPE2, S3C2410_GPE2_CDCLK);
105 s3c2410_gpio_cfgpin(S3C2410_GPE3, S3C2410_GPE3_I2SSDI);
106 s3c2410_gpio_cfgpin(S3C2410_GPE4, S3C2410_GPE4_I2SSDO);
107
108 return 0;
109}
110
111static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
112 struct snd_pcm_hw_params *params,
113 struct snd_soc_dai *cpu_dai)
114{
115 struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
116 struct s3c_dma_params *dma_data;
117 u32 iismod;
118
119 pr_debug("Entered %s\n", __func__);
120
121 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
122 dma_data = i2s->dma_playback;
123 else
124 dma_data = i2s->dma_capture;
125
126 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
127
128 iismod = readl(i2s->regs + S3C2412_IISMOD);
129 pr_debug("%s: r: IISMOD: %x\n", __func__, iismod);
130
131 switch (params_format(params)) {
132 case SNDRV_PCM_FORMAT_S8:
133 iismod |= S3C2412_IISMOD_8BIT;
134 break;
135 case SNDRV_PCM_FORMAT_S16_LE:
136 iismod &= ~S3C2412_IISMOD_8BIT;
137 break;
138 }
139
140 writel(iismod, i2s->regs + S3C2412_IISMOD);
141 pr_debug("%s: w: IISMOD: %x\n", __func__, iismod);
142
143 return 0;
144}
145
146#define S3C2412_I2S_RATES \
147 (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
148 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
149 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
150
151static struct snd_soc_dai_ops s3c2412_i2s_dai_ops = {
152 .hw_params = s3c2412_i2s_hw_params,
153};
154
155struct snd_soc_dai s3c2412_i2s_dai = {
156 .name = "s3c2412-i2s",
157 .id = 0,
158 .probe = s3c2412_i2s_probe,
159 .playback = {
160 .channels_min = 2,
161 .channels_max = 2,
162 .rates = S3C2412_I2S_RATES,
163 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
164 },
165 .capture = {
166 .channels_min = 2,
167 .channels_max = 2,
168 .rates = S3C2412_I2S_RATES,
169 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
170 },
171 .ops = &s3c2412_i2s_dai_ops,
172};
173EXPORT_SYMBOL_GPL(s3c2412_i2s_dai);
174
175static int __init s3c2412_i2s_init(void)
176{
177 return s3c_i2sv2_register_dai(&s3c2412_i2s_dai);
178}
179module_init(s3c2412_i2s_init);
180
181static void __exit s3c2412_i2s_exit(void)
182{
183 snd_soc_unregister_dai(&s3c2412_i2s_dai);
184}
185module_exit(s3c2412_i2s_exit);
186
187/* Module information */
188MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
189MODULE_DESCRIPTION("S3C2412 I2S SoC Interface");
190MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-07 10:45:06 -0400