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

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

Version: ~ [ linux-5.15-rc7 ] ~ [ linux-5.14.14 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.75 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.155 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.213 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.252 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.287 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.289 ] ~ [ 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 // SPDX-License-Identifier: GPL-2.0+
  2 //
  3 // Copyright (c) 2009 Samsung Electronics Co. Ltd
  4 // Author: Jaswinder Singh <jassisinghbrar@gmail.com>
  5 
  6 #include <linux/module.h>
  7 #include <sound/soc.h>
  8 #include <sound/pcm_params.h>
  9 
 10 #include "../codecs/wm8580.h"
 11 #include "i2s.h"
 12 
 13 /*
 14  * Default CFG switch settings to use this driver:
 15  *
 16  *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
 17  */
 18 
 19 /* SMDK has a 12MHZ crystal attached to WM8580 */
 20 #define SMDK_WM8580_FREQ 12000000
 21 
 22 static int smdk_hw_params(struct snd_pcm_substream *substream,
 23         struct snd_pcm_hw_params *params)
 24 {
 25         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 26         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 27         unsigned int pll_out;
 28         int rfs, ret;
 29 
 30         switch (params_width(params)) {
 31         case 8:
 32         case 16:
 33                 break;
 34         default:
 35                 return -EINVAL;
 36         }
 37 
 38         /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
 39          * This criterion can't be met if we request PLL output
 40          * as {8000x256, 64000x256, 11025x256}Hz.
 41          * As a wayout, we rather change rfs to a minimum value that
 42          * results in (params_rate(params) * rfs), and itself, acceptable
 43          * to both - the CODEC and the CPU.
 44          */
 45         switch (params_rate(params)) {
 46         case 16000:
 47         case 22050:
 48         case 32000:
 49         case 44100:
 50         case 48000:
 51         case 88200:
 52         case 96000:
 53                 rfs = 256;
 54                 break;
 55         case 64000:
 56                 rfs = 384;
 57                 break;
 58         case 8000:
 59         case 11025:
 60                 rfs = 512;
 61                 break;
 62         default:
 63                 return -EINVAL;
 64         }
 65         pll_out = params_rate(params) * rfs;
 66 
 67         /* Set WM8580 to drive MCLK from its PLLA */
 68         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
 69                                         WM8580_CLKSRC_PLLA);
 70         if (ret < 0)
 71                 return ret;
 72 
 73         ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
 74                                         SMDK_WM8580_FREQ, pll_out);
 75         if (ret < 0)
 76                 return ret;
 77 
 78         ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
 79                                      pll_out, SND_SOC_CLOCK_IN);
 80         if (ret < 0)
 81                 return ret;
 82 
 83         return 0;
 84 }
 85 
 86 /*
 87  * SMDK WM8580 DAI operations.
 88  */
 89 static struct snd_soc_ops smdk_ops = {
 90         .hw_params = smdk_hw_params,
 91 };
 92 
 93 /* SMDK Playback widgets */
 94 static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
 95         SND_SOC_DAPM_HP("Front", NULL),
 96         SND_SOC_DAPM_HP("Center+Sub", NULL),
 97         SND_SOC_DAPM_HP("Rear", NULL),
 98 
 99         SND_SOC_DAPM_MIC("MicIn", NULL),
100         SND_SOC_DAPM_LINE("LineIn", NULL),
101 };
102 
103 /* SMDK-PAIFTX connections */
104 static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
105         /* MicIn feeds AINL */
106         {"AINL", NULL, "MicIn"},
107 
108         /* LineIn feeds AINL/R */
109         {"AINL", NULL, "LineIn"},
110         {"AINR", NULL, "LineIn"},
111 
112         /* Front Left/Right are fed VOUT1L/R */
113         {"Front", NULL, "VOUT1L"},
114         {"Front", NULL, "VOUT1R"},
115 
116         /* Center/Sub are fed VOUT2L/R */
117         {"Center+Sub", NULL, "VOUT2L"},
118         {"Center+Sub", NULL, "VOUT2R"},
119 
120         /* Rear Left/Right are fed VOUT3L/R */
121         {"Rear", NULL, "VOUT3L"},
122         {"Rear", NULL, "VOUT3R"},
123 };
124 
125 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
126 {
127         /* Enabling the microphone requires the fitting of a 0R
128          * resistor to connect the line from the microphone jack.
129          */
130         snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn");
131 
132         return 0;
133 }
134 
135 enum {
136         PRI_PLAYBACK = 0,
137         PRI_CAPTURE,
138 };
139 
140 #define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
141         SND_SOC_DAIFMT_CBM_CFM)
142 
143 SND_SOC_DAILINK_DEFS(paif_rx,
144         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.2")),
145         DAILINK_COMP_ARRAY(COMP_CODEC("wm8580.0-001b", "wm8580-hifi-playback")),
146         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
147 
148 SND_SOC_DAILINK_DEFS(paif_tx,
149         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.2")),
150         DAILINK_COMP_ARRAY(COMP_CODEC("wm8580.0-001b", "wm8580-hifi-capture")),
151         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
152 
153 static struct snd_soc_dai_link smdk_dai[] = {
154         [PRI_PLAYBACK] = { /* Primary Playback i/f */
155                 .name = "WM8580 PAIF RX",
156                 .stream_name = "Playback",
157                 .dai_fmt = SMDK_DAI_FMT,
158                 .ops = &smdk_ops,
159                 SND_SOC_DAILINK_REG(paif_rx),
160         },
161         [PRI_CAPTURE] = { /* Primary Capture i/f */
162                 .name = "WM8580 PAIF TX",
163                 .stream_name = "Capture",
164                 .dai_fmt = SMDK_DAI_FMT,
165                 .init = smdk_wm8580_init_paiftx,
166                 .ops = &smdk_ops,
167                 SND_SOC_DAILINK_REG(paif_tx),
168         },
169 };
170 
171 static struct snd_soc_card smdk = {
172         .name = "SMDK-I2S",
173         .owner = THIS_MODULE,
174         .dai_link = smdk_dai,
175         .num_links = ARRAY_SIZE(smdk_dai),
176 
177         .dapm_widgets = smdk_wm8580_dapm_widgets,
178         .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
179         .dapm_routes = smdk_wm8580_audio_map,
180         .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
181 };
182 
183 static struct platform_device *smdk_snd_device;
184 
185 static int __init smdk_audio_init(void)
186 {
187         int ret;
188 
189         smdk_snd_device = platform_device_alloc("soc-audio", -1);
190         if (!smdk_snd_device)
191                 return -ENOMEM;
192 
193         platform_set_drvdata(smdk_snd_device, &smdk);
194         ret = platform_device_add(smdk_snd_device);
195 
196         if (ret)
197                 platform_device_put(smdk_snd_device);
198 
199         return ret;
200 }
201 module_init(smdk_audio_init);
202 
203 static void __exit smdk_audio_exit(void)
204 {
205         platform_device_unregister(smdk_snd_device);
206 }
207 module_exit(smdk_audio_exit);
208 
209 MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com");
210 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
211 MODULE_LICENSE("GPL");
212 

~ [ 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