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ASoC: Factor out cache I/O from WM8974
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
parent
37cfa1950e
commit
1e97f50b70
@ -57,55 +57,7 @@ struct wm8974_priv {
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static struct snd_soc_codec *wm8974_codec;
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/*
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* read wm8974 register cache
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*/
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static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg == WM8974_RESET)
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return 0;
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if (reg >= WM8974_CACHEREGNUM)
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return -1;
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return cache[reg];
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}
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/*
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* write wm8974 register cache
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*/
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static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec,
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u16 reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= WM8974_CACHEREGNUM)
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return;
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cache[reg] = value;
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}
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/*
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* write to the WM8974 register space
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*/
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static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D9 WM8974 register offset
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* D8...D0 register data
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*/
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data[0] = (reg << 1) | ((value >> 8) & 0x0001);
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data[1] = value & 0x00ff;
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wm8974_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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#define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0)
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#define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0)
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static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
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static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
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@ -385,27 +337,27 @@ static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai,
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if (freq_in == 0 || freq_out == 0) {
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/* Clock CODEC directly from MCLK */
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reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
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wm8974_write(codec, WM8974_CLOCK, reg & 0x0ff);
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reg = snd_soc_read(codec, WM8974_CLOCK);
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snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff);
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/* Turn off PLL */
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reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
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wm8974_write(codec, WM8974_POWER1, reg & 0x1df);
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reg = snd_soc_read(codec, WM8974_POWER1);
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snd_soc_write(codec, WM8974_POWER1, reg & 0x1df);
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return 0;
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}
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pll_factors(freq_out*4, freq_in);
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wm8974_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
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wm8974_write(codec, WM8974_PLLK1, pll_div.k >> 18);
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wm8974_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
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wm8974_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
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reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
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wm8974_write(codec, WM8974_POWER1, reg | 0x020);
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snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
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snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18);
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snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
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snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
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reg = snd_soc_read(codec, WM8974_POWER1);
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snd_soc_write(codec, WM8974_POWER1, reg | 0x020);
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/* Run CODEC from PLL instead of MCLK */
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reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
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wm8974_write(codec, WM8974_CLOCK, reg | 0x100);
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reg = snd_soc_read(codec, WM8974_CLOCK);
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snd_soc_write(codec, WM8974_CLOCK, reg | 0x100);
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return 0;
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}
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@ -421,24 +373,24 @@ static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
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switch (div_id) {
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case WM8974_OPCLKDIV:
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reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf;
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wm8974_write(codec, WM8974_GPIO, reg | div);
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reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf;
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snd_soc_write(codec, WM8974_GPIO, reg | div);
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break;
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case WM8974_MCLKDIV:
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reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f;
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wm8974_write(codec, WM8974_CLOCK, reg | div);
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reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f;
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snd_soc_write(codec, WM8974_CLOCK, reg | div);
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break;
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case WM8974_ADCCLK:
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reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7;
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wm8974_write(codec, WM8974_ADC, reg | div);
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reg = snd_soc_read(codec, WM8974_ADC) & 0x1f7;
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snd_soc_write(codec, WM8974_ADC, reg | div);
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break;
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case WM8974_DACCLK:
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reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7;
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wm8974_write(codec, WM8974_DAC, reg | div);
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reg = snd_soc_read(codec, WM8974_DAC) & 0x1f7;
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snd_soc_write(codec, WM8974_DAC, reg | div);
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break;
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case WM8974_BCLKDIV:
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reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3;
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wm8974_write(codec, WM8974_CLOCK, reg | div);
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reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3;
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snd_soc_write(codec, WM8974_CLOCK, reg | div);
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break;
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default:
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return -EINVAL;
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@ -452,7 +404,7 @@ static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u16 iface = 0;
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u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe;
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u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe;
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/* set master/slave audio interface */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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@ -499,8 +451,8 @@ static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
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return -EINVAL;
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}
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wm8974_write(codec, WM8974_IFACE, iface);
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wm8974_write(codec, WM8974_CLOCK, clk);
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snd_soc_write(codec, WM8974_IFACE, iface);
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snd_soc_write(codec, WM8974_CLOCK, clk);
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return 0;
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}
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@ -509,8 +461,8 @@ static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f;
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u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1;
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u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f;
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u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1;
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/* bit size */
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switch (params_format(params)) {
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@ -549,20 +501,20 @@ static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
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break;
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}
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wm8974_write(codec, WM8974_IFACE, iface);
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wm8974_write(codec, WM8974_ADD, adn);
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snd_soc_write(codec, WM8974_IFACE, iface);
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snd_soc_write(codec, WM8974_ADD, adn);
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return 0;
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}
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static int wm8974_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf;
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u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf;
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if (mute)
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wm8974_write(codec, WM8974_DAC, mute_reg | 0x40);
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snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40);
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else
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wm8974_write(codec, WM8974_DAC, mute_reg);
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snd_soc_write(codec, WM8974_DAC, mute_reg);
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return 0;
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}
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@ -570,13 +522,13 @@ static int wm8974_mute(struct snd_soc_dai *dai, int mute)
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static int wm8974_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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u16 power1 = wm8974_read_reg_cache(codec, WM8974_POWER1) & ~0x3;
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u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3;
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switch (level) {
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case SND_SOC_BIAS_ON:
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case SND_SOC_BIAS_PREPARE:
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power1 |= 0x1; /* VMID 50k */
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wm8974_write(codec, WM8974_POWER1, power1);
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snd_soc_write(codec, WM8974_POWER1, power1);
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break;
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case SND_SOC_BIAS_STANDBY:
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@ -584,18 +536,18 @@ static int wm8974_set_bias_level(struct snd_soc_codec *codec,
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if (codec->bias_level == SND_SOC_BIAS_OFF) {
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/* Initial cap charge at VMID 5k */
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wm8974_write(codec, WM8974_POWER1, power1 | 0x3);
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snd_soc_write(codec, WM8974_POWER1, power1 | 0x3);
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mdelay(100);
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}
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power1 |= 0x2; /* VMID 500k */
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wm8974_write(codec, WM8974_POWER1, power1);
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snd_soc_write(codec, WM8974_POWER1, power1);
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break;
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case SND_SOC_BIAS_OFF:
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wm8974_write(codec, WM8974_POWER1, 0);
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wm8974_write(codec, WM8974_POWER2, 0);
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wm8974_write(codec, WM8974_POWER3, 0);
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snd_soc_write(codec, WM8974_POWER1, 0);
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snd_soc_write(codec, WM8974_POWER2, 0);
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snd_soc_write(codec, WM8974_POWER3, 0);
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break;
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}
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@ -738,8 +690,6 @@ static __devinit int wm8974_register(struct wm8974_priv *wm8974)
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codec->private_data = wm8974;
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codec->name = "WM8974";
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codec->owner = THIS_MODULE;
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codec->read = wm8974_read_reg_cache;
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codec->write = wm8974_write;
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codec->bias_level = SND_SOC_BIAS_OFF;
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codec->set_bias_level = wm8974_set_bias_level;
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codec->dai = &wm8974_dai;
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@ -747,12 +697,18 @@ static __devinit int wm8974_register(struct wm8974_priv *wm8974)
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codec->reg_cache_size = WM8974_CACHEREGNUM;
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codec->reg_cache = &wm8974->reg_cache;
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ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
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goto err;
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}
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memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg));
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ret = wm8974_reset(codec);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to issue reset\n");
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return ret;
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goto err;
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}
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wm8974_dai.dev = codec->dev;
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@ -764,17 +720,22 @@ static __devinit int wm8974_register(struct wm8974_priv *wm8974)
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ret = snd_soc_register_codec(codec);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to register codec: %d\n", ret);
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return ret;
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goto err;
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}
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ret = snd_soc_register_dai(&wm8974_dai);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
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snd_soc_unregister_codec(codec);
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return ret;
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goto err_codec;
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}
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return 0;
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err_codec:
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snd_soc_unregister_codec(codec);
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err:
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kfree(wm8974);
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return ret;
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}
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static __devexit void wm8974_unregister(struct wm8974_priv *wm8974)
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