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Commit 6735988b authored by Mark Brown's avatar Mark Brown
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ASoC: Add regmap_field helpers for simple bit operations 

Merge series from Li Chen <lchen.firstlove@zohomail.com>

This series proposes to add simple bit operations for setting, clearing
and testing specific bits with regmap_field and uses them in one of the
sunxi drivers.
parents bf29a87c b2366240
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Showing with 89 additions and 48 deletions
drivers/base/regmap/regmap.c
View file @ 6735988b
......@@ -2220,6 +2220,28 @@ int regmap_field_update_bits_base(struct regmap_field *field,
}
EXPORT_SYMBOL_GPL(regmap_field_update_bits_base);
/**
* regmap_field_test_bits() - Check if all specified bits are set in a
* register field.
*
* @field: Register field to operate on
* @bits: Bits to test
*
* Returns -1 if the underlying regmap_field_read() fails, 0 if at least one of the
* tested bits is not set and 1 if all tested bits are set.
*/
int regmap_field_test_bits(struct regmap_field *field, unsigned int bits)
{
unsigned int val, ret;
ret = regmap_field_read(field, &val);
if (ret)
return ret;
return (val & bits) == bits;
}
EXPORT_SYMBOL_GPL(regmap_field_test_bits);
/**
* regmap_fields_update_bits_base() - Perform a read/modify/write cycle a
* register field with port ID
......
include/linux/regmap.h
View file @ 6735988b
......@@ -1336,6 +1336,22 @@ static inline int regmap_field_update_bits(struct regmap_field *field,
NULL, false, false);
}
static inline int regmap_field_set_bits(struct regmap_field *field,
unsigned int bits)
{
return regmap_field_update_bits_base(field, bits, bits, NULL, false,
false);
}
static inline int regmap_field_clear_bits(struct regmap_field *field,
unsigned int bits)
{
return regmap_field_update_bits_base(field, bits, 0, NULL, false,
false);
}
int regmap_field_test_bits(struct regmap_field *field, unsigned int bits);
static inline int
regmap_field_force_update_bits(struct regmap_field *field,
unsigned int mask, unsigned int val)
......@@ -1769,6 +1785,27 @@ regmap_field_force_update_bits(struct regmap_field *field,
return -EINVAL;
}
static inline int regmap_field_set_bits(struct regmap_field *field,
unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_field_clear_bits(struct regmap_field *field,
unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_field_test_bits(struct regmap_field *field,
unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_fields_write(struct regmap_field *field,
unsigned int id, unsigned int val)
{
......
sound/soc/sunxi/sun4i-codec.c
View file @ 6735988b
......@@ -250,37 +250,33 @@ struct sun4i_codec {
static void sun4i_codec_start_playback(struct sun4i_codec *scodec)
{
/* Flush TX FIFO */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH),
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH));
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH));
/* Enable DAC DRQ */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_DAC_DRQ_EN),
BIT(SUN4I_CODEC_DAC_FIFOC_DAC_DRQ_EN));
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_DAC_DRQ_EN));
}
static void sun4i_codec_stop_playback(struct sun4i_codec *scodec)
{
/* Disable DAC DRQ */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_DAC_DRQ_EN),
0);
regmap_clear_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_DAC_DRQ_EN));
}
static void sun4i_codec_start_capture(struct sun4i_codec *scodec)
{
/* Enable ADC DRQ */
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN),
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN));
regmap_field_set_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN));
}
static void sun4i_codec_stop_capture(struct sun4i_codec *scodec)
{
/* Disable ADC DRQ */
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN), 0);
regmap_field_clear_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN));
}
static int sun4i_codec_trigger(struct snd_pcm_substream *substream, int cmd,
......@@ -323,8 +319,7 @@ static int sun4i_codec_prepare_capture(struct snd_pcm_substream *substream,
/* Flush RX FIFO */
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_FIFO_FLUSH),
regmap_field_set_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_FIFO_FLUSH));
......@@ -365,8 +360,7 @@ static int sun4i_codec_prepare_playback(struct snd_pcm_substream *substream,
u32 val;
/* Flush the TX FIFO */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH),
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH));
/* Set TX FIFO Empty Trigger Level */
......@@ -386,9 +380,8 @@ static int sun4i_codec_prepare_playback(struct snd_pcm_substream *substream,
val);
/* Send zeros when we have an underrun */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_SEND_LASAT),
0);
regmap_clear_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_SEND_LASAT));
return 0;
};
......@@ -485,33 +478,27 @@ static int sun4i_codec_hw_params_capture(struct sun4i_codec *scodec,
/* Set the number of channels we want to use */
if (params_channels(params) == 1)
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN),
regmap_field_set_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN));
else
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN),
0);
regmap_field_clear_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN));
/* Set the number of sample bits to either 16 or 24 bits */
if (hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min == 32) {
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS),
regmap_field_set_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS));
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE),
0);
regmap_field_clear_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE));
scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
} else {
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS),
0);
regmap_field_clear_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS));
/* Fill most significant bits with valid data MSB */
regmap_field_update_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE),
regmap_field_set_bits(scodec->reg_adc_fifoc,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE));
scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
......@@ -543,24 +530,20 @@ static int sun4i_codec_hw_params_playback(struct sun4i_codec *scodec,
/* Set the number of sample bits to either 16 or 24 bits */
if (hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min == 32) {
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_SAMPLE_BITS),
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_SAMPLE_BITS));
/* Set TX FIFO mode to padding the LSBs with 0 */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_FIFO_MODE),
0);
regmap_clear_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_FIFO_MODE));
scodec->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
} else {
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_SAMPLE_BITS),
0);
regmap_clear_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_SAMPLE_BITS));
/* Set TX FIFO mode to repeat the MSB */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_FIFO_MODE),
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_TX_FIFO_MODE));
scodec->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
......@@ -624,8 +607,7 @@ static int sun4i_codec_startup(struct snd_pcm_substream *substream,
* Stop issuing DRQ when we have room for less than 16 samples
* in our TX FIFO
*/
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
3 << SUN4I_CODEC_DAC_FIFOC_DRQ_CLR_CNT,
regmap_set_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
3 << SUN4I_CODEC_DAC_FIFOC_DRQ_CLR_CNT);
return clk_prepare_enable(scodec->clk_module);
......
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