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Diffstat (limited to 'sound/soc/imx/mx27vis_wm8974.c')
-rw-r--r--sound/soc/imx/mx27vis_wm8974.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/sound/soc/imx/mx27vis_wm8974.c b/sound/soc/imx/mx27vis_wm8974.c
deleted file mode 100644
index 07d2a248438c..000000000000
--- a/sound/soc/imx/mx27vis_wm8974.c
+++ /dev/null
@@ -1,318 +0,0 @@
1/*
2 * mx27vis_wm8974.c -- SoC audio for mx27vis
3 *
4 * Copyright 2009 Vista Silicon S.L.
5 * Author: Javier Martin
6 * javier.martin@vista-silicon.com
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/device.h>
18#include <linux/i2c.h>
19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23
24
25#include "../codecs/wm8974.h"
26#include "mx1_mx2-pcm.h"
27#include "mxc-ssi.h"
28#include <mach/gpio.h>
29#include <mach/iomux.h>
30
31#define IGNORED_ARG 0
32
33
34static struct snd_soc_card mx27vis;
35
36/**
37 * This function connects SSI1 (HPCR1) as slave to
38 * SSI1 external signals (PPCR1)
39 * As slave, HPCR1 must set TFSDIR and TCLKDIR as inputs from
40 * port 4
41 */
42void audmux_connect_1_4(void)
43{
44 pr_debug("AUDMUX: normal operation mode\n");
45 /* Reset HPCR1 and PPCR1 */
46
47 DAM_HPCR1 = 0x00000000;
48 DAM_PPCR1 = 0x00000000;
49
50 /* set to synchronous */
51 DAM_HPCR1 |= AUDMUX_HPCR_SYN;
52 DAM_PPCR1 |= AUDMUX_PPCR_SYN;
53
54
55 /* set Rx sources 1 <--> 4 */
56 DAM_HPCR1 |= AUDMUX_HPCR_RXDSEL(3); /* port 4 */
57 DAM_PPCR1 |= AUDMUX_PPCR_RXDSEL(0); /* port 1 */
58
59 /* set Tx frame and Clock direction and source 4 --> 1 output */
60 DAM_HPCR1 |= AUDMUX_HPCR_TFSDIR | AUDMUX_HPCR_TCLKDIR;
61 DAM_HPCR1 |= AUDMUX_HPCR_TFCSEL(3); /* TxDS and TxCclk from port 4 */
62
63 return;
64}
65
66static int mx27vis_hifi_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
68{
69 struct snd_soc_pcm_runtime *rtd = substream->private_data;
70 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
71 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
72 unsigned int pll_out = 0, bclk = 0, fmt = 0, mclk = 0;
73 int ret = 0;
74
75 /*
76 * The WM8974 is better at generating accurate audio clocks than the
77 * MX27 SSI controller, so we will use it as master when we can.
78 */
79 switch (params_rate(params)) {
80 case 8000:
81 fmt = SND_SOC_DAIFMT_CBM_CFM;
82 mclk = WM8974_MCLKDIV_12;
83 pll_out = 24576000;
84 break;
85 case 16000:
86 fmt = SND_SOC_DAIFMT_CBM_CFM;
87 pll_out = 12288000;
88 break;
89 case 48000:
90 fmt = SND_SOC_DAIFMT_CBM_CFM;
91 bclk = WM8974_BCLKDIV_4;
92 pll_out = 12288000;
93 break;
94 case 96000:
95 fmt = SND_SOC_DAIFMT_CBM_CFM;
96 bclk = WM8974_BCLKDIV_2;
97 pll_out = 12288000;
98 break;
99 case 11025:
100 fmt = SND_SOC_DAIFMT_CBM_CFM;
101 bclk = WM8974_BCLKDIV_16;
102 pll_out = 11289600;
103 break;
104 case 22050:
105 fmt = SND_SOC_DAIFMT_CBM_CFM;
106 bclk = WM8974_BCLKDIV_8;
107 pll_out = 11289600;
108 break;
109 case 44100:
110 fmt = SND_SOC_DAIFMT_CBM_CFM;
111 bclk = WM8974_BCLKDIV_4;
112 mclk = WM8974_MCLKDIV_2;
113 pll_out = 11289600;
114 break;
115 case 88200:
116 fmt = SND_SOC_DAIFMT_CBM_CFM;
117 bclk = WM8974_BCLKDIV_2;
118 pll_out = 11289600;
119 break;
120 }
121
122 /* set codec DAI configuration */
123 ret = codec_dai->ops->set_fmt(codec_dai,
124 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
125 SND_SOC_DAIFMT_SYNC | fmt);
126 if (ret < 0) {
127 printk(KERN_ERR "Error from codec DAI configuration\n");
128 return ret;
129 }
130
131 /* set cpu DAI configuration */
132 ret = cpu_dai->ops->set_fmt(cpu_dai,
133 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
134 SND_SOC_DAIFMT_SYNC | fmt);
135 if (ret < 0) {
136 printk(KERN_ERR "Error from cpu DAI configuration\n");
137 return ret;
138 }
139
140 /* Put DC field of STCCR to 1 (not zero) */
141 ret = cpu_dai->ops->set_tdm_slot(cpu_dai, 0, 2);
142
143 /* set the SSI system clock as input */
144 ret = cpu_dai->ops->set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
145 SND_SOC_CLOCK_IN);
146 if (ret < 0) {
147 printk(KERN_ERR "Error when setting system SSI clk\n");
148 return ret;
149 }
150
151 /* set codec BCLK division for sample rate */
152 ret = codec_dai->ops->set_clkdiv(codec_dai, WM8974_BCLKDIV, bclk);
153 if (ret < 0) {
154 printk(KERN_ERR "Error when setting BCLK division\n");
155 return ret;
156 }
157
158
159 /* codec PLL input is 25 MHz */
160 ret = codec_dai->ops->set_pll(codec_dai, IGNORED_ARG, IGNORED_ARG,
161 25000000, pll_out);
162 if (ret < 0) {
163 printk(KERN_ERR "Error when setting PLL input\n");
164 return ret;
165 }
166
167 /*set codec MCLK division for sample rate */
168 ret = codec_dai->ops->set_clkdiv(codec_dai, WM8974_MCLKDIV, mclk);
169 if (ret < 0) {
170 printk(KERN_ERR "Error when setting MCLK division\n");
171 return ret;
172 }
173
174 return 0;
175}
176
177static int mx27vis_hifi_hw_free(struct snd_pcm_substream *substream)
178{
179 struct snd_soc_pcm_runtime *rtd = substream->private_data;
180 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
181
182 /* disable the PLL */
183 return codec_dai->ops->set_pll(codec_dai, IGNORED_ARG, IGNORED_ARG,
184 0, 0);
185}
186
187/*
188 * mx27vis WM8974 HiFi DAI opserations.
189 */
190static struct snd_soc_ops mx27vis_hifi_ops = {
191 .hw_params = mx27vis_hifi_hw_params,
192 .hw_free = mx27vis_hifi_hw_free,
193};
194
195
196static int mx27vis_suspend(struct platform_device *pdev, pm_message_t state)
197{
198 return 0;
199}
200
201static int mx27vis_resume(struct platform_device *pdev)
202{
203 return 0;
204}
205
206static int mx27vis_probe(struct platform_device *pdev)
207{
208 int ret = 0;
209
210 ret = get_ssi_clk(0, &pdev->dev);
211
212 if (ret < 0) {
213 printk(KERN_ERR "%s: cant get ssi clock\n", __func__);
214 return ret;
215 }
216
217
218 return 0;
219}
220
221static int mx27vis_remove(struct platform_device *pdev)
222{
223 put_ssi_clk(0);
224 return 0;
225}
226
227static struct snd_soc_dai_link mx27vis_dai[] = {
228{ /* Hifi Playback*/
229 .name = "WM8974",
230 .stream_name = "WM8974 HiFi",
231 .cpu_dai = &imx_ssi_pcm_dai[0],
232 .codec_dai = &wm8974_dai,
233 .ops = &mx27vis_hifi_ops,
234},
235};
236
237static struct snd_soc_card mx27vis = {
238 .name = "mx27vis",
239 .platform = &mx1_mx2_soc_platform,
240 .probe = mx27vis_probe,
241 .remove = mx27vis_remove,
242 .suspend_pre = mx27vis_suspend,
243 .resume_post = mx27vis_resume,
244 .dai_link = mx27vis_dai,
245 .num_links = ARRAY_SIZE(mx27vis_dai),
246};
247
248static struct snd_soc_device mx27vis_snd_devdata = {
249 .card = &mx27vis,
250 .codec_dev = &soc_codec_dev_wm8974,
251};
252
253static struct platform_device *mx27vis_snd_device;
254
255/* Temporal definition of board specific behaviour */
256void gpio_ssi_active(int ssi_num)
257{
258 int ret = 0;
259
260 unsigned int ssi1_pins[] = {
261 PC20_PF_SSI1_FS,
262 PC21_PF_SSI1_RXD,
263 PC22_PF_SSI1_TXD,
264 PC23_PF_SSI1_CLK,
265 };
266 unsigned int ssi2_pins[] = {
267 PC24_PF_SSI2_FS,
268 PC25_PF_SSI2_RXD,
269 PC26_PF_SSI2_TXD,
270 PC27_PF_SSI2_CLK,
271 };
272 if (ssi_num == 0)
273 ret = mxc_gpio_setup_multiple_pins(ssi1_pins,
274 ARRAY_SIZE(ssi1_pins), "USB OTG");
275 else
276 ret = mxc_gpio_setup_multiple_pins(ssi2_pins,
277 ARRAY_SIZE(ssi2_pins), "USB OTG");
278 if (ret)
279 printk(KERN_ERR "Error requesting ssi %x pins\n", ssi_num);
280}
281
282
283static int __init mx27vis_init(void)
284{
285 int ret;
286
287 mx27vis_snd_device = platform_device_alloc("soc-audio", -1);
288 if (!mx27vis_snd_device)
289 return -ENOMEM;
290
291 platform_set_drvdata(mx27vis_snd_device, &mx27vis_snd_devdata);
292 mx27vis_snd_devdata.dev = &mx27vis_snd_device->dev;
293 ret = platform_device_add(mx27vis_snd_device);
294
295 if (ret) {
296 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
297 platform_device_put(mx27vis_snd_device);
298 }
299
300 /* WM8974 uses SSI1 (HPCR1) via AUDMUX port 4 for audio (PPCR1) */
301 gpio_ssi_active(0);
302 audmux_connect_1_4();
303
304 return ret;
305}
306
307static void __exit mx27vis_exit(void)
308{
309 /* We should call some "ssi_gpio_inactive()" properly */
310}
311
312module_init(mx27vis_init);
313module_exit(mx27vis_exit);
314
315
316MODULE_AUTHOR("Javier Martin, javier.martin@vista-silicon.com");
317MODULE_DESCRIPTION("ALSA SoC WM8974 mx27vis");
318MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-02 23:22:29 -0500