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authorMark Brown <broonie@opensource.wolfsonmicro.com>2013-04-12 08:57:15 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-04-12 08:57:15 -0400
commit4b6142ae93cc9c81ec5f43b0976ee7d24619f041 (patch)
treee7f75fbfa3b9be3fea30748594ea37ea7c3defd3 /sound/soc/codecs/si476x.c
parentdf00b71fbd5efde56e521bd220a7483b1c15c4be (diff)
parent06d7c13325228a2272e21caa4aa60805bc4d0fe4 (diff)
Merge remote-tracking branch 'asoc/topic/si476x' into asoc-next
Diffstat (limited to 'sound/soc/codecs/si476x.c')
-rw-r--r--sound/soc/codecs/si476x.c47
1 files changed, 41 insertions, 6 deletions
diff --git a/sound/soc/codecs/si476x.c b/sound/soc/codecs/si476x.c
index 566ea3256e2d..721587c9cd84 100644
--- a/sound/soc/codecs/si476x.c
+++ b/sound/soc/codecs/si476x.c
@@ -1,3 +1,22 @@
1/*
2 * sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
3 *
4 * Copyright (C) 2012 Innovative Converged Devices(ICD)
5 * Copyright (C) 2013 Andrey Smirnov
6 *
7 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 */
19
1#include <linux/module.h> 20#include <linux/module.h>
2#include <linux/slab.h> 21#include <linux/slab.h>
3#include <sound/pcm.h> 22#include <sound/pcm.h>
@@ -45,13 +64,23 @@ static unsigned int si476x_codec_read(struct snd_soc_codec *codec,
45 unsigned int reg) 64 unsigned int reg)
46{ 65{
47 int err; 66 int err;
67 unsigned int val;
48 struct si476x_core *core = codec->control_data; 68 struct si476x_core *core = codec->control_data;
49 69
50 si476x_core_lock(core); 70 si476x_core_lock(core);
51 err = si476x_core_cmd_get_property(core, reg); 71 if (!si476x_core_is_powered_up(core))
72 regcache_cache_only(core->regmap, true);
73
74 err = regmap_read(core->regmap, reg, &val);
75
76 if (!si476x_core_is_powered_up(core))
77 regcache_cache_only(core->regmap, false);
52 si476x_core_unlock(core); 78 si476x_core_unlock(core);
53 79
54 return err; 80 if (err < 0)
81 return err;
82
83 return val;
55} 84}
56 85
57static int si476x_codec_write(struct snd_soc_codec *codec, 86static int si476x_codec_write(struct snd_soc_codec *codec,
@@ -61,7 +90,13 @@ static int si476x_codec_write(struct snd_soc_codec *codec,
61 struct si476x_core *core = codec->control_data; 90 struct si476x_core *core = codec->control_data;
62 91
63 si476x_core_lock(core); 92 si476x_core_lock(core);
64 err = si476x_core_cmd_set_property(core, reg, val); 93 if (!si476x_core_is_powered_up(core))
94 regcache_cache_only(core->regmap, true);
95
96 err = regmap_write(core->regmap, reg, val);
97
98 if (!si476x_core_is_powered_up(core))
99 regcache_cache_only(core->regmap, false);
65 si476x_core_unlock(core); 100 si476x_core_unlock(core);
66 101
67 return err; 102 return err;
@@ -140,7 +175,7 @@ static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
140 dev_err(codec_dai->codec->dev, "Failed to set output format\n"); 175 dev_err(codec_dai->codec->dev, "Failed to set output format\n");
141 return err; 176 return err;
142 } 177 }
143 178
144 return 0; 179 return 0;
145} 180}
146 181
@@ -182,7 +217,7 @@ static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
182 217
183 err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, 218 err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
184 SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK, 219 SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
185 (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | 220 (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
186 (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)); 221 (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
187 if (err < 0) { 222 if (err < 0) {
188 dev_err(dai->codec->dev, "Failed to set output width\n"); 223 dev_err(dai->codec->dev, "Failed to set output width\n");
@@ -251,6 +286,6 @@ static struct platform_driver si476x_platform_driver = {
251}; 286};
252module_platform_driver(si476x_platform_driver); 287module_platform_driver(si476x_platform_driver);
253 288
254MODULE_AUTHOR("Andrey Smirnov <andrey.smirnov@convergeddevices.net>"); 289MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
255MODULE_DESCRIPTION("ASoC Si4761/64 codec driver"); 290MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
256MODULE_LICENSE("GPL"); 291MODULE_LICENSE("GPL");