diff options
author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-07-10 23:12:01 +0100 |
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committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-08-03 16:59:16 +0100 |
commit | 8d50e447d19fec64adebeef55f2b60d695435412 (patch) | |
tree | aac4234db113cf40abc4c7779ddecb76d7e0946b /sound/soc/codecs/wm8903.c | |
parent | afa2f1066e7288a9e4f8e3fda277da245219dffc (diff) | |
download | lwn-8d50e447d19fec64adebeef55f2b60d695435412.tar.gz lwn-8d50e447d19fec64adebeef55f2b60d695435412.zip |
ASoC: Factor out I/O for Wolfson 8 bit data 16 bit register CODECs
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm8903.c')
-rw-r--r-- | sound/soc/codecs/wm8903.c | 244 |
1 files changed, 86 insertions, 158 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c index c9baeae3e275..fe1307b500cf 100644 --- a/sound/soc/codecs/wm8903.c +++ b/sound/soc/codecs/wm8903.c @@ -225,94 +225,18 @@ struct wm8903_priv { struct snd_pcm_substream *slave_substream; }; - -static unsigned int wm8903_read_reg_cache(struct snd_soc_codec *codec, - unsigned int reg) -{ - u16 *cache = codec->reg_cache; - - BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults)); - - return cache[reg]; -} - -static unsigned int wm8903_hw_read(struct snd_soc_codec *codec, u8 reg) -{ - struct i2c_msg xfer[2]; - u16 data; - int ret; - struct i2c_client *client = codec->control_data; - - /* Write register */ - xfer[0].addr = client->addr; - xfer[0].flags = 0; - xfer[0].len = 1; - xfer[0].buf = ® - - /* Read data */ - xfer[1].addr = client->addr; - xfer[1].flags = I2C_M_RD; - xfer[1].len = 2; - xfer[1].buf = (u8 *)&data; - - ret = i2c_transfer(client->adapter, xfer, 2); - if (ret != 2) { - pr_err("i2c_transfer returned %d\n", ret); - return 0; - } - - return (data >> 8) | ((data & 0xff) << 8); -} - -static unsigned int wm8903_read(struct snd_soc_codec *codec, - unsigned int reg) +static int wm8903_volatile_register(unsigned int reg) { switch (reg) { case WM8903_SW_RESET_AND_ID: case WM8903_REVISION_NUMBER: case WM8903_INTERRUPT_STATUS_1: case WM8903_WRITE_SEQUENCER_4: - return wm8903_hw_read(codec, reg); + return 1; default: - return wm8903_read_reg_cache(codec, reg); - } -} - -static void wm8903_write_reg_cache(struct snd_soc_codec *codec, - u16 reg, unsigned int value) -{ - u16 *cache = codec->reg_cache; - - BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults)); - - switch (reg) { - case WM8903_SW_RESET_AND_ID: - case WM8903_REVISION_NUMBER: - break; - - default: - cache[reg] = value; - break; - } -} - -static int wm8903_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int value) -{ - u8 data[3]; - - wm8903_write_reg_cache(codec, reg, value); - - /* Data format is 1 byte of address followed by 2 bytes of data */ - data[0] = reg; - data[1] = (value >> 8) & 0xff; - data[2] = value & 0xff; - - if (codec->hw_write(codec->control_data, data, 3) == 2) return 0; - else - return -EIO; + } } static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start) @@ -323,13 +247,13 @@ static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start) BUG_ON(start > 48); /* Enable the sequencer */ - reg[0] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_0); + reg[0] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_0); reg[0] |= WM8903_WSEQ_ENA; - wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]); + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]); dev_dbg(&i2c->dev, "Starting sequence at %d\n", start); - wm8903_write(codec, WM8903_WRITE_SEQUENCER_3, + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_3, start | WM8903_WSEQ_START); /* Wait for it to complete. If we have the interrupt wired up then @@ -339,13 +263,13 @@ static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start) do { msleep(10); - reg[4] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_4); + reg[4] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_4); } while (reg[4] & WM8903_WSEQ_BUSY); dev_dbg(&i2c->dev, "Sequence complete\n"); /* Disable the sequencer again */ - wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0] & ~WM8903_WSEQ_ENA); return 0; @@ -357,12 +281,12 @@ static void wm8903_sync_reg_cache(struct snd_soc_codec *codec, u16 *cache) /* There really ought to be something better we can do here :/ */ for (i = 0; i < ARRAY_SIZE(wm8903_reg_defaults); i++) - cache[i] = wm8903_hw_read(codec, i); + cache[i] = codec->hw_read(codec, i); } static void wm8903_reset(struct snd_soc_codec *codec) { - wm8903_write(codec, WM8903_SW_RESET_AND_ID, 0); + snd_soc_write(codec, WM8903_SW_RESET_AND_ID, 0); memcpy(codec->reg_cache, wm8903_reg_defaults, sizeof(wm8903_reg_defaults)); } @@ -423,52 +347,52 @@ static int wm8903_output_event(struct snd_soc_dapm_widget *w, } if (event & SND_SOC_DAPM_PRE_PMU) { - val = wm8903_read(codec, reg); + val = snd_soc_read(codec, reg); /* Short the output */ val &= ~(WM8903_OUTPUT_SHORT << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); } if (event & SND_SOC_DAPM_POST_PMU) { - val = wm8903_read(codec, reg); + val = snd_soc_read(codec, reg); val |= (WM8903_OUTPUT_IN << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); val |= (WM8903_OUTPUT_INT << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); /* Turn on the output ENA_OUTP */ val |= (WM8903_OUTPUT_OUT << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); /* Enable the DC servo */ - dcs_reg = wm8903_read(codec, WM8903_DC_SERVO_0); + dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0); dcs_reg |= dcs_bit; - wm8903_write(codec, WM8903_DC_SERVO_0, dcs_reg); + snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg); /* Remove the short */ val |= (WM8903_OUTPUT_SHORT << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); } if (event & SND_SOC_DAPM_PRE_PMD) { - val = wm8903_read(codec, reg); + val = snd_soc_read(codec, reg); /* Short the output */ val &= ~(WM8903_OUTPUT_SHORT << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); /* Disable the DC servo */ - dcs_reg = wm8903_read(codec, WM8903_DC_SERVO_0); + dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0); dcs_reg &= ~dcs_bit; - wm8903_write(codec, WM8903_DC_SERVO_0, dcs_reg); + snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg); /* Then disable the intermediate and output stages */ val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT | WM8903_OUTPUT_IN) << shift); - wm8903_write(codec, reg, val); + snd_soc_write(codec, reg, val); } return 0; @@ -492,13 +416,13 @@ static int wm8903_class_w_put(struct snd_kcontrol *kcontrol, u16 reg; int ret; - reg = wm8903_read(codec, WM8903_CLASS_W_0); + reg = snd_soc_read(codec, WM8903_CLASS_W_0); /* Turn it off if we're about to enable bypass */ if (ucontrol->value.integer.value[0]) { if (wm8903->class_w_users == 0) { dev_dbg(&i2c->dev, "Disabling Class W\n"); - wm8903_write(codec, WM8903_CLASS_W_0, reg & + snd_soc_write(codec, WM8903_CLASS_W_0, reg & ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V)); } wm8903->class_w_users++; @@ -511,7 +435,7 @@ static int wm8903_class_w_put(struct snd_kcontrol *kcontrol, if (!ucontrol->value.integer.value[0]) { if (wm8903->class_w_users == 1) { dev_dbg(&i2c->dev, "Enabling Class W\n"); - wm8903_write(codec, WM8903_CLASS_W_0, reg | + snd_soc_write(codec, WM8903_CLASS_W_0, reg | WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V); } wm8903->class_w_users--; @@ -1009,55 +933,55 @@ static int wm8903_set_bias_level(struct snd_soc_codec *codec, switch (level) { case SND_SOC_BIAS_ON: case SND_SOC_BIAS_PREPARE: - reg = wm8903_read(codec, WM8903_VMID_CONTROL_0); + reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0); reg &= ~(WM8903_VMID_RES_MASK); reg |= WM8903_VMID_RES_50K; - wm8903_write(codec, WM8903_VMID_CONTROL_0, reg); + snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg); break; case SND_SOC_BIAS_STANDBY: if (codec->bias_level == SND_SOC_BIAS_OFF) { - wm8903_write(codec, WM8903_CLOCK_RATES_2, + snd_soc_write(codec, WM8903_CLOCK_RATES_2, WM8903_CLK_SYS_ENA); /* Change DC servo dither level in startup sequence */ - wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11); - wm8903_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257); - wm8903_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2); + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11); + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257); + snd_soc_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2); wm8903_run_sequence(codec, 0); wm8903_sync_reg_cache(codec, codec->reg_cache); /* Enable low impedence charge pump output */ - reg = wm8903_read(codec, + reg = snd_soc_read(codec, WM8903_CONTROL_INTERFACE_TEST_1); - wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1, + snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1, reg | WM8903_TEST_KEY); - reg2 = wm8903_read(codec, WM8903_CHARGE_PUMP_TEST_1); - wm8903_write(codec, WM8903_CHARGE_PUMP_TEST_1, + reg2 = snd_soc_read(codec, WM8903_CHARGE_PUMP_TEST_1); + snd_soc_write(codec, WM8903_CHARGE_PUMP_TEST_1, reg2 | WM8903_CP_SW_KELVIN_MODE_MASK); - wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1, + snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1, reg); /* By default no bypass paths are enabled so * enable Class W support. */ dev_dbg(&i2c->dev, "Enabling Class W\n"); - wm8903_write(codec, WM8903_CLASS_W_0, reg | + snd_soc_write(codec, WM8903_CLASS_W_0, reg | WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V); } - reg = wm8903_read(codec, WM8903_VMID_CONTROL_0); + reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0); reg &= ~(WM8903_VMID_RES_MASK); reg |= WM8903_VMID_RES_250K; - wm8903_write(codec, WM8903_VMID_CONTROL_0, reg); + snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg); break; case SND_SOC_BIAS_OFF: wm8903_run_sequence(codec, 32); - reg = wm8903_read(codec, WM8903_CLOCK_RATES_2); + reg = snd_soc_read(codec, WM8903_CLOCK_RATES_2); reg &= ~WM8903_CLK_SYS_ENA; - wm8903_write(codec, WM8903_CLOCK_RATES_2, reg); + snd_soc_write(codec, WM8903_CLOCK_RATES_2, reg); break; } @@ -1081,7 +1005,7 @@ static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; - u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1); + u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1); aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK | WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV); @@ -1159,7 +1083,7 @@ static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai, return -EINVAL; } - wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1); + snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1); return 0; } @@ -1169,14 +1093,14 @@ static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute) struct snd_soc_codec *codec = codec_dai->codec; u16 reg; - reg = wm8903_read(codec, WM8903_DAC_DIGITAL_1); + reg = snd_soc_read(codec, WM8903_DAC_DIGITAL_1); if (mute) reg |= WM8903_DAC_MUTE; else reg &= ~WM8903_DAC_MUTE; - wm8903_write(codec, WM8903_DAC_DIGITAL_1, reg); + snd_soc_write(codec, WM8903_DAC_DIGITAL_1, reg); return 0; } @@ -1366,12 +1290,12 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream, int cur_val; int clk_sys; - u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1); - u16 aif2 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_2); - u16 aif3 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_3); - u16 clock0 = wm8903_read(codec, WM8903_CLOCK_RATES_0); - u16 clock1 = wm8903_read(codec, WM8903_CLOCK_RATES_1); - u16 dac_digital1 = wm8903_read(codec, WM8903_DAC_DIGITAL_1); + u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1); + u16 aif2 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_2); + u16 aif3 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_3); + u16 clock0 = snd_soc_read(codec, WM8903_CLOCK_RATES_0); + u16 clock1 = snd_soc_read(codec, WM8903_CLOCK_RATES_1); + u16 dac_digital1 = snd_soc_read(codec, WM8903_DAC_DIGITAL_1); if (substream == wm8903->slave_substream) { dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n"); @@ -1503,12 +1427,12 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream, aif2 |= bclk_divs[bclk_div].div; aif3 |= bclk / fs; - wm8903_write(codec, WM8903_CLOCK_RATES_0, clock0); - wm8903_write(codec, WM8903_CLOCK_RATES_1, clock1); - wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1); - wm8903_write(codec, WM8903_AUDIO_INTERFACE_2, aif2); - wm8903_write(codec, WM8903_AUDIO_INTERFACE_3, aif3); - wm8903_write(codec, WM8903_DAC_DIGITAL_1, dac_digital1); + snd_soc_write(codec, WM8903_CLOCK_RATES_0, clock0); + snd_soc_write(codec, WM8903_CLOCK_RATES_1, clock1); + snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1); + snd_soc_write(codec, WM8903_AUDIO_INTERFACE_2, aif2); + snd_soc_write(codec, WM8903_AUDIO_INTERFACE_3, aif3); + snd_soc_write(codec, WM8903_DAC_DIGITAL_1, dac_digital1); return 0; } @@ -1593,7 +1517,7 @@ static int wm8903_resume(struct platform_device *pdev) if (tmp_cache) { for (i = 2; i < ARRAY_SIZE(wm8903_reg_defaults); i++) if (tmp_cache[i] != reg_cache[i]) - wm8903_write(codec, i, tmp_cache[i]); + snd_soc_write(codec, i, tmp_cache[i]); } else { dev_err(&i2c->dev, "Failed to allocate temporary cache\n"); } @@ -1624,9 +1548,6 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, codec->dev = &i2c->dev; codec->name = "WM8903"; codec->owner = THIS_MODULE; - codec->read = wm8903_read; - codec->write = wm8903_write; - codec->hw_write = (hw_write_t)i2c_master_send; codec->bias_level = SND_SOC_BIAS_OFF; codec->set_bias_level = wm8903_set_bias_level; codec->dai = &wm8903_dai; @@ -1634,18 +1555,25 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, codec->reg_cache_size = ARRAY_SIZE(wm8903->reg_cache); codec->reg_cache = &wm8903->reg_cache[0]; codec->private_data = wm8903; + codec->volatile_register = wm8903_volatile_register; i2c_set_clientdata(i2c, codec); codec->control_data = i2c; - val = wm8903_hw_read(codec, WM8903_SW_RESET_AND_ID); + ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to set cache I/O: %d\n", ret); + goto err; + } + + val = snd_soc_read(codec, WM8903_SW_RESET_AND_ID); if (val != wm8903_reg_defaults[WM8903_SW_RESET_AND_ID]) { dev_err(&i2c->dev, "Device with ID register %x is not a WM8903\n", val); return -ENODEV; } - val = wm8903_read(codec, WM8903_REVISION_NUMBER); + val = snd_soc_read(codec, WM8903_REVISION_NUMBER); dev_info(&i2c->dev, "WM8903 revision %d\n", val & WM8903_CHIP_REV_MASK); @@ -1655,35 +1583,35 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY); /* Latch volume update bits */ - val = wm8903_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT); + val = snd_soc_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT); val |= WM8903_ADCVU; - wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val); - wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val); + snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val); + snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val); - val = wm8903_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT); + val = snd_soc_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT); val |= WM8903_DACVU; - wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val); - wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val); + snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val); + snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val); - val = wm8903_read(codec, WM8903_ANALOGUE_OUT1_LEFT); + val = snd_soc_read(codec, WM8903_ANALOGUE_OUT1_LEFT); val |= WM8903_HPOUTVU; - wm8903_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val); - wm8903_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val); - val = wm8903_read(codec, WM8903_ANALOGUE_OUT2_LEFT); + val = snd_soc_read(codec, WM8903_ANALOGUE_OUT2_LEFT); val |= WM8903_LINEOUTVU; - wm8903_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val); - wm8903_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val); - val = wm8903_read(codec, WM8903_ANALOGUE_OUT3_LEFT); + val = snd_soc_read(codec, WM8903_ANALOGUE_OUT3_LEFT); val |= WM8903_SPKVU; - wm8903_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val); - wm8903_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val); + snd_soc_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val); /* Enable DAC soft mute by default */ - val = wm8903_read(codec, WM8903_DAC_DIGITAL_1); + val = snd_soc_read(codec, WM8903_DAC_DIGITAL_1); val |= WM8903_DAC_MUTEMODE; - wm8903_write(codec, WM8903_DAC_DIGITAL_1, val); + snd_soc_write(codec, WM8903_DAC_DIGITAL_1, val); wm8903_dai.dev = &i2c->dev; wm8903_codec = codec; |