From 8d50e447d19fec64adebeef55f2b60d695435412 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 10 Jul 2009 23:12:01 +0100 Subject: ASoC: Factor out I/O for Wolfson 8 bit data 16 bit register CODECs Signed-off-by: Mark Brown --- sound/soc/codecs/wm8523.c | 98 ++++++++++------------------------------------- 1 file changed, 21 insertions(+), 77 deletions(-) (limited to 'sound/soc/codecs/wm8523.c') diff --git a/sound/soc/codecs/wm8523.c b/sound/soc/codecs/wm8523.c index 3b499ae7ce6c..25870a4652fb 100644 --- a/sound/soc/codecs/wm8523.c +++ b/sound/soc/codecs/wm8523.c @@ -62,7 +62,7 @@ static const u16 wm8523_reg[WM8523_REGISTER_COUNT] = { 0x0000, /* R8 - ZERO_DETECT */ }; -static int wm8523_volatile(unsigned int reg) +static int wm8523_volatile_register(unsigned int reg) { switch (reg) { case WM8523_DEVICE_ID: @@ -73,71 +73,9 @@ static int wm8523_volatile(unsigned int reg) } } -static int wm8523_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int value) -{ - struct wm8523_priv *wm8523 = codec->private_data; - u8 data[3]; - - BUG_ON(reg > WM8523_MAX_REGISTER); - - data[0] = reg; - data[1] = (value >> 8) & 0x00ff; - data[2] = value & 0x00ff; - - if (!wm8523_volatile(reg)) - wm8523->reg_cache[reg] = value; - if (codec->hw_write(codec->control_data, data, 3) == 3) - return 0; - else - return -EIO; -} - static int wm8523_reset(struct snd_soc_codec *codec) { - return wm8523_write(codec, WM8523_DEVICE_ID, 0); -} - -static unsigned int wm8523_read_hw(struct snd_soc_codec *codec, u8 reg) -{ - struct i2c_msg xfer[2]; - u16 data; - int ret; - struct i2c_client *i2c = codec->control_data; - - /* Write register */ - xfer[0].addr = i2c->addr; - xfer[0].flags = 0; - xfer[0].len = 1; - xfer[0].buf = ® - - /* Read data */ - xfer[1].addr = i2c->addr; - xfer[1].flags = I2C_M_RD; - xfer[1].len = 2; - xfer[1].buf = (u8 *)&data; - - ret = i2c_transfer(i2c->adapter, xfer, 2); - if (ret != 2) { - dev_err(codec->dev, "Failed to read 0x%x: %d\n", reg, ret); - return 0; - } - - return (data >> 8) | ((data & 0xff) << 8); -} - - -static unsigned int wm8523_read(struct snd_soc_codec *codec, - unsigned int reg) -{ - u16 *reg_cache = codec->reg_cache; - - BUG_ON(reg > WM8523_MAX_REGISTER); - - if (wm8523_volatile(reg)) - return wm8523_read_hw(codec, reg); - else - return reg_cache[reg]; + return snd_soc_write(codec, WM8523_DEVICE_ID, 0); } static const DECLARE_TLV_DB_SCALE(dac_tlv, -10000, 25, 0); @@ -228,8 +166,8 @@ static int wm8523_hw_params(struct snd_pcm_substream *substream, struct snd_soc_codec *codec = socdev->card->codec; struct wm8523_priv *wm8523 = codec->private_data; int i; - u16 aifctrl1 = wm8523_read(codec, WM8523_AIF_CTRL1); - u16 aifctrl2 = wm8523_read(codec, WM8523_AIF_CTRL2); + u16 aifctrl1 = snd_soc_read(codec, WM8523_AIF_CTRL1); + u16 aifctrl2 = snd_soc_read(codec, WM8523_AIF_CTRL2); /* Find a supported LRCLK ratio */ for (i = 0; i < ARRAY_SIZE(lrclk_ratios); i++) { @@ -263,8 +201,8 @@ static int wm8523_hw_params(struct snd_pcm_substream *substream, break; } - wm8523_write(codec, WM8523_AIF_CTRL1, aifctrl1); - wm8523_write(codec, WM8523_AIF_CTRL2, aifctrl2); + snd_soc_write(codec, WM8523_AIF_CTRL1, aifctrl1); + snd_soc_write(codec, WM8523_AIF_CTRL2, aifctrl2); return 0; } @@ -322,7 +260,7 @@ static int wm8523_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; - u16 aifctrl1 = wm8523_read(codec, WM8523_AIF_CTRL1); + u16 aifctrl1 = snd_soc_read(codec, WM8523_AIF_CTRL1); aifctrl1 &= ~(WM8523_BCLK_INV_MASK | WM8523_LRCLK_INV_MASK | WM8523_FMT_MASK | WM8523_AIF_MSTR_MASK); @@ -372,7 +310,7 @@ static int wm8523_set_dai_fmt(struct snd_soc_dai *codec_dai, return -EINVAL; } - wm8523_write(codec, WM8523_AIF_CTRL1, aifctrl1); + snd_soc_write(codec, WM8523_AIF_CTRL1, aifctrl1); return 0; } @@ -411,7 +349,7 @@ static int wm8523_set_bias_level(struct snd_soc_codec *codec, /* Sync back default/cached values */ for (i = WM8523_AIF_CTRL1; i < WM8523_MAX_REGISTER; i++) - wm8523_write(codec, i, wm8523->reg_cache[i]); + snd_soc_write(codec, i, wm8523->reg_cache[i]); msleep(100); @@ -543,7 +481,8 @@ struct snd_soc_codec_device soc_codec_dev_wm8523 = { }; EXPORT_SYMBOL_GPL(soc_codec_dev_wm8523); -static int wm8523_register(struct wm8523_priv *wm8523) +static int wm8523_register(struct wm8523_priv *wm8523, + enum snd_soc_control_type control) { int ret; struct snd_soc_codec *codec = &wm8523->codec; @@ -561,14 +500,13 @@ static int wm8523_register(struct wm8523_priv *wm8523) codec->private_data = wm8523; codec->name = "WM8523"; codec->owner = THIS_MODULE; - codec->read = wm8523_read; - codec->write = wm8523_write; codec->bias_level = SND_SOC_BIAS_OFF; codec->set_bias_level = wm8523_set_bias_level; codec->dai = &wm8523_dai; codec->num_dai = 1; codec->reg_cache_size = WM8523_REGISTER_COUNT; codec->reg_cache = &wm8523->reg_cache; + codec->volatile_register = wm8523_volatile_register; wm8523->rate_constraint.list = &wm8523->rate_constraint_list[0]; wm8523->rate_constraint.count = @@ -576,6 +514,12 @@ static int wm8523_register(struct wm8523_priv *wm8523) memcpy(codec->reg_cache, wm8523_reg, sizeof(wm8523_reg)); + ret = snd_soc_codec_set_cache_io(codec, 8, 16, control); + if (ret != 0) { + dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); + goto err; + } + for (i = 0; i < ARRAY_SIZE(wm8523->supplies); i++) wm8523->supplies[i].supply = wm8523_supply_names[i]; @@ -593,7 +537,7 @@ static int wm8523_register(struct wm8523_priv *wm8523) goto err_get; } - ret = wm8523_read(codec, WM8523_DEVICE_ID); + ret = snd_soc_read(codec, WM8523_DEVICE_ID); if (ret < 0) { dev_err(codec->dev, "Failed to read ID register\n"); goto err_enable; @@ -604,7 +548,7 @@ static int wm8523_register(struct wm8523_priv *wm8523) goto err_enable; } - ret = wm8523_read(codec, WM8523_REVISION); + ret = snd_soc_read(codec, WM8523_REVISION); if (ret < 0) { dev_err(codec->dev, "Failed to read revision register\n"); goto err_enable; @@ -684,7 +628,7 @@ static __devinit int wm8523_i2c_probe(struct i2c_client *i2c, codec->dev = &i2c->dev; - return wm8523_register(wm8523); + return wm8523_register(wm8523, SND_SOC_I2C); } static __devexit int wm8523_i2c_remove(struct i2c_client *client) -- cgit v1.2.2