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author | Lars-Peter Clausen <lars@metafoo.de> | 2012-10-27 17:15:08 +0200 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-27 21:31:42 +0100 |
commit | dd1b18abca8aabaa464e4d9418752a45c90ccd69 (patch) | |
tree | 0ae347e720f55601d141deeae13ae6afb58046b4 /sound/soc/codecs/jz4740.c | |
parent | 355d74b59cb361f9c865ed19aad6bed17c8febd5 (diff) | |
download | linux-stable-dd1b18abca8aabaa464e4d9418752a45c90ccd69.tar.gz linux-stable-dd1b18abca8aabaa464e4d9418752a45c90ccd69.tar.bz2 linux-stable-dd1b18abca8aabaa464e4d9418752a45c90ccd69.zip |
ASoC: jz4740-codec: Use regmap
Use regmap-mmio instead of open-coding caching and register accessors.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/jz4740.c')
-rw-r--r-- | sound/soc/codecs/jz4740.c | 86 |
1 files changed, 41 insertions, 45 deletions
diff --git a/sound/soc/codecs/jz4740.c b/sound/soc/codecs/jz4740.c index 1661202e4864..9ad1da36887e 100644 --- a/sound/soc/codecs/jz4740.c +++ b/sound/soc/codecs/jz4740.c @@ -16,6 +16,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/io.h> +#include <linux/regmap.h> #include <linux/delay.h> @@ -27,7 +28,7 @@ #include <sound/tlv.h> #define JZ4740_REG_CODEC_1 0x0 -#define JZ4740_REG_CODEC_2 0x1 +#define JZ4740_REG_CODEC_2 0x4 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29) #define JZ4740_CODEC_1_MIC_ENABLE BIT(28) @@ -68,33 +69,15 @@ #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0 -static const uint32_t jz4740_codec_regs[] = { - 0x021b2302, 0x00170803, +static const struct reg_default jz4740_codec_reg_defaults[] = { + { JZ4740_REG_CODEC_1, 0x021b2302 }, + { JZ4740_REG_CODEC_2, 0x00170803 }, }; struct jz4740_codec { - void __iomem *base; + struct regmap *regmap; }; -static unsigned int jz4740_codec_read(struct snd_soc_codec *codec, - unsigned int reg) -{ - struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); - return readl(jz4740_codec->base + (reg << 2)); -} - -static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int val) -{ - struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); - u32 *cache = codec->reg_cache; - - cache[reg] = val; - writel(val, jz4740_codec->base + (reg << 2)); - - return 0; -} - static const unsigned int jz4740_mic_tlv[] = { TLV_DB_RANGE_HEAD(2), 0, 2, TLV_DB_SCALE_ITEM(0, 600, 0), @@ -175,8 +158,8 @@ static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = { static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { + struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(dai->codec); uint32_t val; - struct snd_soc_codec *codec = dai->codec; switch (params_rate(params)) { case 8000: @@ -212,7 +195,7 @@ static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET; - snd_soc_update_bits(codec, JZ4740_REG_CODEC_2, + regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2, JZ4740_CODEC_2_SAMPLE_RATE_MASK, val); return 0; @@ -242,25 +225,23 @@ static struct snd_soc_dai_driver jz4740_codec_dai = { .symmetric_rates = 1, }; -static void jz4740_codec_wakeup(struct snd_soc_codec *codec) +static void jz4740_codec_wakeup(struct regmap *regmap) { - int i; - uint32_t *cache = codec->reg_cache; - - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, + regmap_update_bits(regmap, JZ4740_REG_CODEC_1, JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET); udelay(2); - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, + regmap_update_bits(regmap, JZ4740_REG_CODEC_1, JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0); - for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i) - jz4740_codec_write(codec, i, cache[i]); + regcache_sync(regmap); } static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { + struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); + struct regmap *regmap = jz4740_codec->regmap; unsigned int mask; unsigned int value; @@ -273,12 +254,12 @@ static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; value = 0; - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); + regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); break; case SND_SOC_BIAS_STANDBY: /* The only way to clear the suspend flag is to reset the codec */ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) - jz4740_codec_wakeup(codec); + jz4740_codec_wakeup(regmap); mask = JZ4740_CODEC_1_VREF_DISABLE | JZ4740_CODEC_1_VREF_AMP_DISABLE | @@ -287,13 +268,14 @@ static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, JZ4740_CODEC_1_VREF_AMP_DISABLE | JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); + regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); break; case SND_SOC_BIAS_OFF: mask = JZ4740_CODEC_1_SUSPEND; value = JZ4740_CODEC_1_SUSPEND; - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); + regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); + regcache_mark_dirty(regmap); break; default: break; @@ -306,7 +288,9 @@ static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, static int jz4740_codec_dev_probe(struct snd_soc_codec *codec) { - snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, + struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); + + regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1, JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE); jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY); @@ -343,12 +327,7 @@ static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = { .remove = jz4740_codec_dev_remove, .suspend = jz4740_codec_suspend, .resume = jz4740_codec_resume, - .read = jz4740_codec_read, - .write = jz4740_codec_write, .set_bias_level = jz4740_codec_set_bias_level, - .reg_cache_default = jz4740_codec_regs, - .reg_word_size = sizeof(u32), - .reg_cache_size = 2, .controls = jz4740_codec_controls, .num_controls = ARRAY_SIZE(jz4740_codec_controls), @@ -358,11 +337,23 @@ static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = { .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes), }; +static const struct regmap_config jz4740_codec_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = JZ4740_REG_CODEC_2, + + .reg_defaults = jz4740_codec_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults), + .cache_type = REGCACHE_RBTREE, +}; + static int __devinit jz4740_codec_probe(struct platform_device *pdev) { int ret; struct jz4740_codec *jz4740_codec; struct resource *mem; + void __iomem *base; jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec), GFP_KERNEL); @@ -370,10 +361,15 @@ static int __devinit jz4740_codec_probe(struct platform_device *pdev) return -ENOMEM; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - jz4740_codec->base = devm_request_and_ioremap(&pdev->dev, mem); - if (!jz4740_codec->base) + base = devm_request_and_ioremap(&pdev->dev, mem); + if (!base) return -EBUSY; + jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base, + &jz4740_codec_regmap_config); + if (IS_ERR(jz4740_codec->regmap)) + return PTR_ERR(jz4740_codec->regmap); + platform_set_drvdata(pdev, jz4740_codec); ret = snd_soc_register_codec(&pdev->dev, |