ASoC: add soc-dai.c

Current ALSA SoC has many snd_soc_dai_xxx() function which is
using dai->driver->ops->xxx.
But, some of them are implemented as snd_soc_dai_xxx(),
but others are directly using dai->driver->ops->xxx.
Because of it, the code is not easy to read.

This patch creats new soc-dai.c and moves snd_soc_dai_xxx()
functions into it.
One exception is snd_soc_dai_is_dummy() which is based on
soc-utils local variable. We need to keep it as-is there.

Others which is directly using dai->driver->ops->xxx will be
implemented at soc-dai.c by incremental patches.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/871ryij1r6.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/Makefile

 # SPDX-License-Identifier: GPL-2.0
-snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-utils.o
+snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-utils.o soc-dai.o
 snd-soc-core-objs += soc-pcm.o soc-io.o soc-devres.o soc-ops.o
 snd-soc-core-$(CONFIG_SND_SOC_COMPRESS) += soc-compress.o
 

sound/soc/soc-core.c

@@ -2394,26 +2394,6 @@ int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
 }
 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
 
-/**
- * snd_soc_dai_set_sysclk - configure DAI system or master clock.
- * @dai: DAI
- * @clk_id: DAI specific clock ID
- * @freq: new clock frequency in Hz
- * @dir: new clock direction - input/output.
- *
- * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
- */
-int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
-	unsigned int freq, int dir)
-{
-	if (dai->driver->ops->set_sysclk)
-		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
-
-	return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
-					    freq, dir);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
-
 /**
  * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
  * @component: COMPONENT
@@ -2436,48 +2416,6 @@ int snd_soc_component_set_sysclk(struct snd_soc_component *component,
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
 
-/**
- * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
- * @dai: DAI
- * @div_id: DAI specific clock divider ID
- * @div: new clock divisor.
- *
- * Configures the clock dividers. This is used to derive the best DAI bit and
- * frame clocks from the system or master clock. It's best to set the DAI bit
- * and frame clocks as low as possible to save system power.
- */
-int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
-	int div_id, int div)
-{
-	if (dai->driver->ops->set_clkdiv)
-		return dai->driver->ops->set_clkdiv(dai, div_id, div);
-	else
-		return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
-
-/**
- * snd_soc_dai_set_pll - configure DAI PLL.
- * @dai: DAI
- * @pll_id: DAI specific PLL ID
- * @source: DAI specific source for the PLL
- * @freq_in: PLL input clock frequency in Hz
- * @freq_out: requested PLL output clock frequency in Hz
- *
- * Configures and enables PLL to generate output clock based on input clock.
- */
-int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
-	unsigned int freq_in, unsigned int freq_out)
-{
-	if (dai->driver->ops->set_pll)
-		return dai->driver->ops->set_pll(dai, pll_id, source,
-					 freq_in, freq_out);
-
-	return snd_soc_component_set_pll(dai->component, pll_id, source,
-					 freq_in, freq_out);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
-
 /*
  * snd_soc_component_set_pll - configure component PLL.
  * @component: COMPONENT
@@ -2500,187 +2438,6 @@ int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
 
-/**
- * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
- * @dai: DAI
- * @ratio: Ratio of BCLK to Sample rate.
- *
- * Configures the DAI for a preset BCLK to sample rate ratio.
- */
-int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
-{
-	if (dai->driver->ops->set_bclk_ratio)
-		return dai->driver->ops->set_bclk_ratio(dai, ratio);
-	else
-		return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
-
-/**
- * snd_soc_dai_set_fmt - configure DAI hardware audio format.
- * @dai: DAI
- * @fmt: SND_SOC_DAIFMT_* format value.
- *
- * Configures the DAI hardware format and clocking.
- */
-int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
-{
-	if (dai->driver->ops->set_fmt == NULL)
-		return -ENOTSUPP;
-	return dai->driver->ops->set_fmt(dai, fmt);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
-
-/**
- * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
- * @slots: Number of slots in use.
- * @tx_mask: bitmask representing active TX slots.
- * @rx_mask: bitmask representing active RX slots.
- *
- * Generates the TDM tx and rx slot default masks for DAI.
- */
-static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
-				       unsigned int *tx_mask,
-				       unsigned int *rx_mask)
-{
-	if (*tx_mask || *rx_mask)
-		return 0;
-
-	if (!slots)
-		return -EINVAL;
-
-	*tx_mask = (1 << slots) - 1;
-	*rx_mask = (1 << slots) - 1;
-
-	return 0;
-}
-
-/**
- * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
- * @dai: The DAI to configure
- * @tx_mask: bitmask representing active TX slots.
- * @rx_mask: bitmask representing active RX slots.
- * @slots: Number of slots in use.
- * @slot_width: Width in bits for each slot.
- *
- * This function configures the specified DAI for TDM operation. @slot contains
- * the total number of slots of the TDM stream and @slot_with the width of each
- * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
- * active slots of the TDM stream for the specified DAI, i.e. which slots the
- * DAI should write to or read from. If a bit is set the corresponding slot is
- * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
- * the first slot, bit 1 to the second slot and so on. The first active slot
- * maps to the first channel of the DAI, the second active slot to the second
- * channel and so on.
- *
- * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
- * @rx_mask and @slot_width will be ignored.
- *
- * Returns 0 on success, a negative error code otherwise.
- */
-int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
-	unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
-{
-	if (dai->driver->ops->xlate_tdm_slot_mask)
-		dai->driver->ops->xlate_tdm_slot_mask(slots,
-						&tx_mask, &rx_mask);
-	else
-		snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
-
-	dai->tx_mask = tx_mask;
-	dai->rx_mask = rx_mask;
-
-	if (dai->driver->ops->set_tdm_slot)
-		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
-				slots, slot_width);
-	else
-		return -ENOTSUPP;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
-
-/**
- * snd_soc_dai_set_channel_map - configure DAI audio channel map
- * @dai: DAI
- * @tx_num: how many TX channels
- * @tx_slot: pointer to an array which imply the TX slot number channel
- *           0~num-1 uses
- * @rx_num: how many RX channels
- * @rx_slot: pointer to an array which imply the RX slot number channel
- *           0~num-1 uses
- *
- * configure the relationship between channel number and TDM slot number.
- */
-int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
-	unsigned int tx_num, unsigned int *tx_slot,
-	unsigned int rx_num, unsigned int *rx_slot)
-{
-	if (dai->driver->ops->set_channel_map)
-		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
-			rx_num, rx_slot);
-	else
-		return -ENOTSUPP;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
-
-/**
- * snd_soc_dai_get_channel_map - Get DAI audio channel map
- * @dai: DAI
- * @tx_num: how many TX channels
- * @tx_slot: pointer to an array which imply the TX slot number channel
- *           0~num-1 uses
- * @rx_num: how many RX channels
- * @rx_slot: pointer to an array which imply the RX slot number channel
- *           0~num-1 uses
- */
-int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
-	unsigned int *tx_num, unsigned int *tx_slot,
-	unsigned int *rx_num, unsigned int *rx_slot)
-{
-	if (dai->driver->ops->get_channel_map)
-		return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
-			rx_num, rx_slot);
-	else
-		return -ENOTSUPP;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
-
-/**
- * snd_soc_dai_set_tristate - configure DAI system or master clock.
- * @dai: DAI
- * @tristate: tristate enable
- *
- * Tristates the DAI so that others can use it.
- */
-int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
-{
-	if (dai->driver->ops->set_tristate)
-		return dai->driver->ops->set_tristate(dai, tristate);
-	else
-		return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
-
-/**
- * snd_soc_dai_digital_mute - configure DAI system or master clock.
- * @dai: DAI
- * @mute: mute enable
- * @direction: stream to mute
- *
- * Mutes the DAI DAC.
- */
-int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
-			     int direction)
-{
-	if (dai->driver->ops->mute_stream)
-		return dai->driver->ops->mute_stream(dai, mute, direction);
-	else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
-		 dai->driver->ops->digital_mute)
-		return dai->driver->ops->digital_mute(dai, mute);
-	else
-		return -ENOTSUPP;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
-
 static int snd_soc_bind_card(struct snd_soc_card *card)
 {
 	struct snd_soc_pcm_runtime *rtd;

sound/soc/soc-dai.c

+// SPDX-License-Identifier: GPL-2.0
+//
+// soc-dai.c
+//
+// Copyright (C) 2019 Renesas Electronics Corp.
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+/**
+ * snd_soc_dai_set_sysclk - configure DAI system or master clock.
+ * @dai: DAI
+ * @clk_id: DAI specific clock ID
+ * @freq: new clock frequency in Hz
+ * @dir: new clock direction - input/output.
+ *
+ * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
+ */
+int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+			   unsigned int freq, int dir)
+{
+	if (dai->driver->ops->set_sysclk)
+		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
+
+	return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
+					    freq, dir);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
+
+/**
+ * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
+ * @dai: DAI
+ * @div_id: DAI specific clock divider ID
+ * @div: new clock divisor.
+ *
+ * Configures the clock dividers. This is used to derive the best DAI bit and
+ * frame clocks from the system or master clock. It's best to set the DAI bit
+ * and frame clocks as low as possible to save system power.
+ */
+int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
+			   int div_id, int div)
+{
+	if (dai->driver->ops->set_clkdiv)
+		return dai->driver->ops->set_clkdiv(dai, div_id, div);
+	else
+		return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
+
+/**
+ * snd_soc_dai_set_pll - configure DAI PLL.
+ * @dai: DAI
+ * @pll_id: DAI specific PLL ID
+ * @source: DAI specific source for the PLL
+ * @freq_in: PLL input clock frequency in Hz
+ * @freq_out: requested PLL output clock frequency in Hz
+ *
+ * Configures and enables PLL to generate output clock based on input clock.
+ */
+int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
+			unsigned int freq_in, unsigned int freq_out)
+{
+	if (dai->driver->ops->set_pll)
+		return dai->driver->ops->set_pll(dai, pll_id, source,
+						 freq_in, freq_out);
+
+	return snd_soc_component_set_pll(dai->component, pll_id, source,
+					 freq_in, freq_out);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
+
+/**
+ * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
+ * @dai: DAI
+ * @ratio: Ratio of BCLK to Sample rate.
+ *
+ * Configures the DAI for a preset BCLK to sample rate ratio.
+ */
+int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
+{
+	if (dai->driver->ops->set_bclk_ratio)
+		return dai->driver->ops->set_bclk_ratio(dai, ratio);
+	else
+		return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
+
+/**
+ * snd_soc_dai_set_fmt - configure DAI hardware audio format.
+ * @dai: DAI
+ * @fmt: SND_SOC_DAIFMT_* format value.
+ *
+ * Configures the DAI hardware format and clocking.
+ */
+int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	if (dai->driver->ops->set_fmt == NULL)
+		return -ENOTSUPP;
+	return dai->driver->ops->set_fmt(dai, fmt);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
+
+/**
+ * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
+ * @slots: Number of slots in use.
+ * @tx_mask: bitmask representing active TX slots.
+ * @rx_mask: bitmask representing active RX slots.
+ *
+ * Generates the TDM tx and rx slot default masks for DAI.
+ */
+static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
+				       unsigned int *tx_mask,
+				       unsigned int *rx_mask)
+{
+	if (*tx_mask || *rx_mask)
+		return 0;
+
+	if (!slots)
+		return -EINVAL;
+
+	*tx_mask = (1 << slots) - 1;
+	*rx_mask = (1 << slots) - 1;
+
+	return 0;
+}
+
+/**
+ * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
+ * @dai: The DAI to configure
+ * @tx_mask: bitmask representing active TX slots.
+ * @rx_mask: bitmask representing active RX slots.
+ * @slots: Number of slots in use.
+ * @slot_width: Width in bits for each slot.
+ *
+ * This function configures the specified DAI for TDM operation. @slot contains
+ * the total number of slots of the TDM stream and @slot_with the width of each
+ * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
+ * active slots of the TDM stream for the specified DAI, i.e. which slots the
+ * DAI should write to or read from. If a bit is set the corresponding slot is
+ * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
+ * the first slot, bit 1 to the second slot and so on. The first active slot
+ * maps to the first channel of the DAI, the second active slot to the second
+ * channel and so on.
+ *
+ * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
+ * @rx_mask and @slot_width will be ignored.
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
+			     unsigned int tx_mask, unsigned int rx_mask,
+			     int slots, int slot_width)
+{
+	if (dai->driver->ops->xlate_tdm_slot_mask)
+		dai->driver->ops->xlate_tdm_slot_mask(slots,
+						      &tx_mask, &rx_mask);
+	else
+		snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
+
+	dai->tx_mask = tx_mask;
+	dai->rx_mask = rx_mask;
+
+	if (dai->driver->ops->set_tdm_slot)
+		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
+						      slots, slot_width);
+	else
+		return -ENOTSUPP;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
+
+/**
+ * snd_soc_dai_set_channel_map - configure DAI audio channel map
+ * @dai: DAI
+ * @tx_num: how many TX channels
+ * @tx_slot: pointer to an array which imply the TX slot number channel
+ *           0~num-1 uses
+ * @rx_num: how many RX channels
+ * @rx_slot: pointer to an array which imply the RX slot number channel
+ *           0~num-1 uses
+ *
+ * configure the relationship between channel number and TDM slot number.
+ */
+int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
+				unsigned int tx_num, unsigned int *tx_slot,
+				unsigned int rx_num, unsigned int *rx_slot)
+{
+	if (dai->driver->ops->set_channel_map)
+		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
+							 rx_num, rx_slot);
+	else
+		return -ENOTSUPP;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
+
+/**
+ * snd_soc_dai_get_channel_map - Get DAI audio channel map
+ * @dai: DAI
+ * @tx_num: how many TX channels
+ * @tx_slot: pointer to an array which imply the TX slot number channel
+ *           0~num-1 uses
+ * @rx_num: how many RX channels
+ * @rx_slot: pointer to an array which imply the RX slot number channel
+ *           0~num-1 uses
+ */
+int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
+				unsigned int *tx_num, unsigned int *tx_slot,
+				unsigned int *rx_num, unsigned int *rx_slot)
+{
+	if (dai->driver->ops->get_channel_map)
+		return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
+							 rx_num, rx_slot);
+	else
+		return -ENOTSUPP;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
+
+/**
+ * snd_soc_dai_set_tristate - configure DAI system or master clock.
+ * @dai: DAI
+ * @tristate: tristate enable
+ *
+ * Tristates the DAI so that others can use it.
+ */
+int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
+{
+	if (dai->driver->ops->set_tristate)
+		return dai->driver->ops->set_tristate(dai, tristate);
+	else
+		return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
+
+/**
+ * snd_soc_dai_digital_mute - configure DAI system or master clock.
+ * @dai: DAI
+ * @mute: mute enable
+ * @direction: stream to mute
+ *
+ * Mutes the DAI DAC.
+ */
+int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
+			     int direction)
+{
+	if (dai->driver->ops->mute_stream)
+		return dai->driver->ops->mute_stream(dai, mute, direction);
+	else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
+		 dai->driver->ops->digital_mute)
+		return dai->driver->ops->digital_mute(dai, mute);
+	else
+		return -ENOTSUPP;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);