~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/soc/samsung/smdk_wm8580.c

Version: ~ [ linux-5.16-rc3 ] ~ [ linux-5.15.5 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.82 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.162 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.218 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.256 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.291 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.293 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *  smdk_wm8580.c
  3  *
  4  *  Copyright (c) 2009 Samsung Electronics Co. Ltd
  5  *  Author: Jaswinder Singh <jassisinghbrar@gmail.com>
  6  *
  7  *  This program is free software; you can redistribute  it and/or modify it
  8  *  under  the terms of  the GNU General  Public License as published by the
  9  *  Free Software Foundation;  either version 2 of the  License, or (at your
 10  *  option) any later version.
 11  */
 12 
 13 #include <linux/module.h>
 14 #include <sound/soc.h>
 15 #include <sound/pcm_params.h>
 16 
 17 #include <asm/mach-types.h>
 18 
 19 #include "../codecs/wm8580.h"
 20 #include "i2s.h"
 21 
 22 /*
 23  * Default CFG switch settings to use this driver:
 24  *
 25  *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
 26  */
 27 
 28 /* SMDK has a 12MHZ crystal attached to WM8580 */
 29 #define SMDK_WM8580_FREQ 12000000
 30 
 31 static int smdk_hw_params(struct snd_pcm_substream *substream,
 32         struct snd_pcm_hw_params *params)
 33 {
 34         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 35         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 36         unsigned int pll_out;
 37         int bfs, rfs, ret;
 38 
 39         switch (params_width(params)) {
 40         case 8:
 41                 bfs = 16;
 42                 break;
 43         case 16:
 44                 bfs = 32;
 45                 break;
 46         default:
 47                 return -EINVAL;
 48         }
 49 
 50         /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
 51          * This criterion can't be met if we request PLL output
 52          * as {8000x256, 64000x256, 11025x256}Hz.
 53          * As a wayout, we rather change rfs to a minimum value that
 54          * results in (params_rate(params) * rfs), and itself, acceptable
 55          * to both - the CODEC and the CPU.
 56          */
 57         switch (params_rate(params)) {
 58         case 16000:
 59         case 22050:
 60         case 32000:
 61         case 44100:
 62         case 48000:
 63         case 88200:
 64         case 96000:
 65                 rfs = 256;
 66                 break;
 67         case 64000:
 68                 rfs = 384;
 69                 break;
 70         case 8000:
 71         case 11025:
 72                 rfs = 512;
 73                 break;
 74         default:
 75                 return -EINVAL;
 76         }
 77         pll_out = params_rate(params) * rfs;
 78 
 79         /* Set WM8580 to drive MCLK from its PLLA */
 80         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
 81                                         WM8580_CLKSRC_PLLA);
 82         if (ret < 0)
 83                 return ret;
 84 
 85         ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
 86                                         SMDK_WM8580_FREQ, pll_out);
 87         if (ret < 0)
 88                 return ret;
 89 
 90         ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
 91                                      pll_out, SND_SOC_CLOCK_IN);
 92         if (ret < 0)
 93                 return ret;
 94 
 95         return 0;
 96 }
 97 
 98 /*
 99  * SMDK WM8580 DAI operations.
100  */
101 static struct snd_soc_ops smdk_ops = {
102         .hw_params = smdk_hw_params,
103 };
104 
105 /* SMDK Playback widgets */
106 static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
107         SND_SOC_DAPM_HP("Front", NULL),
108         SND_SOC_DAPM_HP("Center+Sub", NULL),
109         SND_SOC_DAPM_HP("Rear", NULL),
110 
111         SND_SOC_DAPM_MIC("MicIn", NULL),
112         SND_SOC_DAPM_LINE("LineIn", NULL),
113 };
114 
115 /* SMDK-PAIFTX connections */
116 static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
117         /* MicIn feeds AINL */
118         {"AINL", NULL, "MicIn"},
119 
120         /* LineIn feeds AINL/R */
121         {"AINL", NULL, "LineIn"},
122         {"AINR", NULL, "LineIn"},
123 
124         /* Front Left/Right are fed VOUT1L/R */
125         {"Front", NULL, "VOUT1L"},
126         {"Front", NULL, "VOUT1R"},
127 
128         /* Center/Sub are fed VOUT2L/R */
129         {"Center+Sub", NULL, "VOUT2L"},
130         {"Center+Sub", NULL, "VOUT2R"},
131 
132         /* Rear Left/Right are fed VOUT3L/R */
133         {"Rear", NULL, "VOUT3L"},
134         {"Rear", NULL, "VOUT3R"},
135 };
136 
137 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
138 {
139         /* Enabling the microphone requires the fitting of a 0R
140          * resistor to connect the line from the microphone jack.
141          */
142         snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn");
143 
144         return 0;
145 }
146 
147 enum {
148         PRI_PLAYBACK = 0,
149         PRI_CAPTURE,
150         SEC_PLAYBACK,
151 };
152 
153 #define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
154         SND_SOC_DAIFMT_CBM_CFM)
155 
156 static struct snd_soc_dai_link smdk_dai[] = {
157         [PRI_PLAYBACK] = { /* Primary Playback i/f */
158                 .name = "WM8580 PAIF RX",
159                 .stream_name = "Playback",
160                 .cpu_dai_name = "samsung-i2s.0",
161                 .codec_dai_name = "wm8580-hifi-playback",
162                 .platform_name = "samsung-i2s.0",
163                 .codec_name = "wm8580.0-001b",
164                 .dai_fmt = SMDK_DAI_FMT,
165                 .ops = &smdk_ops,
166         },
167         [PRI_CAPTURE] = { /* Primary Capture i/f */
168                 .name = "WM8580 PAIF TX",
169                 .stream_name = "Capture",
170                 .cpu_dai_name = "samsung-i2s.0",
171                 .codec_dai_name = "wm8580-hifi-capture",
172                 .platform_name = "samsung-i2s.0",
173                 .codec_name = "wm8580.0-001b",
174                 .dai_fmt = SMDK_DAI_FMT,
175                 .init = smdk_wm8580_init_paiftx,
176                 .ops = &smdk_ops,
177         },
178         [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
179                 .name = "Sec_FIFO TX",
180                 .stream_name = "Playback",
181                 .cpu_dai_name = "samsung-i2s-sec",
182                 .codec_dai_name = "wm8580-hifi-playback",
183                 .platform_name = "samsung-i2s-sec",
184                 .codec_name = "wm8580.0-001b",
185                 .dai_fmt = SMDK_DAI_FMT,
186                 .ops = &smdk_ops,
187         },
188 };
189 
190 static struct snd_soc_card smdk = {
191         .name = "SMDK-I2S",
192         .owner = THIS_MODULE,
193         .dai_link = smdk_dai,
194         .num_links = 2,
195 
196         .dapm_widgets = smdk_wm8580_dapm_widgets,
197         .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
198         .dapm_routes = smdk_wm8580_audio_map,
199         .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
200 };
201 
202 static struct platform_device *smdk_snd_device;
203 
204 static int __init smdk_audio_init(void)
205 {
206         int ret;
207         char *str;
208 
209         if (machine_is_smdkc100()
210                         || machine_is_smdkv210() || machine_is_smdkc110()) {
211                 smdk.num_links = 3;
212         } else if (machine_is_smdk6410()) {
213                 str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
214                 str[strlen(str) - 1] = '2';
215                 str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
216                 str[strlen(str) - 1] = '2';
217         }
218 
219         smdk_snd_device = platform_device_alloc("soc-audio", -1);
220         if (!smdk_snd_device)
221                 return -ENOMEM;
222 
223         platform_set_drvdata(smdk_snd_device, &smdk);
224         ret = platform_device_add(smdk_snd_device);
225 
226         if (ret)
227                 platform_device_put(smdk_snd_device);
228 
229         return ret;
230 }
231 module_init(smdk_audio_init);
232 
233 static void __exit smdk_audio_exit(void)
234 {
235         platform_device_unregister(smdk_snd_device);
236 }
237 module_exit(smdk_audio_exit);
238 
239 MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com");
240 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
241 MODULE_LICENSE("GPL");
242 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp