From: Li Chen <[email protected]>
This series proposes to add simple bit operations for setting, clearing
and testing specific bits with regmap_field.
Li Chen (4):
regmap: provide regmap_field helpers for simple bit operations
ASoC: sunxi: Use {regmap/regmap_field}_{set/clear}_bits helpers
pinctrl: bcm: Use regmap_field_{set/clear}_bits helpers
pinctrl: st: Switch to use regmap_field_test_bits
drivers/base/regmap/regmap.c | 22 ++++++++
drivers/pinctrl/bcm/pinctrl-bcm6358.c | 2 +-
drivers/pinctrl/pinctrl-st.c | 23 ++++----
include/linux/regmap.h | 37 +++++++++++++
sound/soc/sunxi/sun4i-codec.c | 78 +++++++++++----------------
5 files changed, 99 insertions(+), 63 deletions(-)
--
2.36.1
From: Li Chen <[email protected]>
Appropriately change calls to {regmap/regmap_field}_update_bits()
with {regmap/regmap_field}_set_bits()
and {regmap/regmap_field}_clear_bits() for improved readability.
Signed-off-by: Li Chen <[email protected]>
---
sound/soc/sunxi/sun4i-codec.c | 78 ++++++++++++++---------------------
1 file changed, 30 insertions(+), 48 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 60712f24ade5..53e3f43816cc 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -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);
--
2.36.1
From: Li Chen <[email protected]>
We have set/clear/test oerations for regmap, but not for regmap_field yet.
So let's intoroduce regmap_field helpers too.
In many instances regmap_field_update_bits() is used for simple bit setting
and clearing. In these cases the last argument is redundant and we can
hide it with a static inline function.
This adds three new helpers for simple bit operations: set_bits,
clear_bits and test_bits (the last one defined as a regular function).
Signed-off-by: Li Chen <[email protected]>
---
drivers/base/regmap/regmap.c | 22 +++++++++++++++++++++
include/linux/regmap.h | 37 ++++++++++++++++++++++++++++++++++++
2 files changed, 59 insertions(+)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 5e12f7cb5147..a37d6041b7bd 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2208,6 +2208,28 @@ 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
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index de81a94d7b30..10b410734d9e 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1324,6 +1324,22 @@ 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, 0, 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, bits, 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)
@@ -1757,6 +1773,27 @@ 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)
{
--
2.36.1
From: Li Chen <[email protected]>
This series proposes to add simple bit operations for setting, clearing
and testing specific bits with regmap_field.
Li Chen (4):
regmap: provide regmap_field helpers for simple bit operations
ASoC: sunxi: Use {regmap/regmap_field}_{set/clear}_bits helpers
pinctrl: bcm: Use regmap_field_{set/clear}_bits helpers
pinctrl: st: Switch to use regmap_field_test_bits
Changelogs:
v2: fix regmap_field_test_bits compile error in drivers/pinctrl/pinctrl-st.c
drivers/base/regmap/regmap.c | 22 ++++++++
drivers/pinctrl/bcm/pinctrl-bcm6358.c | 2 +-
drivers/pinctrl/pinctrl-st.c | 23 ++++----
include/linux/regmap.h | 37 +++++++++++++
sound/soc/sunxi/sun4i-codec.c | 78 +++++++++++----------------
5 files changed, 99 insertions(+), 63 deletions(-)
--
2.36.1
On Sun, May 22, 2022 at 07:22:37PM -0700, Li Chen wrote:
> From: Li Chen <[email protected]>
>
> This series proposes to add simple bit operations for setting, clearing
> and testing specific bits with regmap_field.
Please don't send new patches in reply to old patches or serieses, this
makes it harder for both people and tools to understand what is going
on - it can bury things in mailboxes and make it difficult to keep track
of what current patches are, both for the new patches and the old ones.
Hi Mark
---- On Mon, 23 May 2022 04:39:46 -0700 Mark Brown <[email protected]> wrote ----
> On Sun, May 22, 2022 at 07:22:37PM -0700, Li Chen wrote:
> > From: Li Chen <[email protected]>
> >
> > This series proposes to add simple bit operations for setting, clearing
> > and testing specific bits with regmap_field.
>
> Please don't send new patches in reply to old patches or serieses, this
> makes it harder for both people and tools to understand what is going
> on - it can bury things in mailboxes and make it difficult to keep track
> of what current patches are, both for the new patches and the old ones.
>
Thanks for letting me know, I won't do this again.
Regards,
Li