ASoC: Constify DAI passed to get_channel_map

get_channel_map() is supposed to obtain map of channels without
modifying the state of the given DAI, so make the pointer to 'struct
snd_soc_dai' as pointing to const.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://msgid.link/r/20240617-n-asoc-const-auto-selectable-formats-v1-4-8004f346ee38@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-dai.h

@@ -198,7 +198,7 @@ int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
 			     int direction);
 
 
-int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
+int snd_soc_dai_get_channel_map(const struct snd_soc_dai *dai,
 		unsigned int *tx_num, unsigned int *tx_slot,
 		unsigned int *rx_num, unsigned int *rx_slot);
 
@@ -307,7 +307,7 @@ struct snd_soc_dai_ops {
 	int (*set_channel_map)(struct snd_soc_dai *dai,
 		unsigned int tx_num, const unsigned int *tx_slot,
 		unsigned int rx_num, const unsigned int *rx_slot);
-	int (*get_channel_map)(struct snd_soc_dai *dai,
+	int (*get_channel_map)(const struct snd_soc_dai *dai,
 			unsigned int *tx_num, unsigned int *tx_slot,
 			unsigned int *rx_num, unsigned int *rx_slot);
 	int (*set_tristate)(struct snd_soc_dai *dai, int tristate);

sound/soc/codecs/lpass-rx-macro.c

@@ -1833,7 +1833,7 @@ static int rx_macro_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static int rx_macro_get_channel_map(struct snd_soc_dai *dai,
+static int rx_macro_get_channel_map(const struct snd_soc_dai *dai,
 				    unsigned int *tx_num, unsigned int *tx_slot,
 				    unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/codecs/lpass-tx-macro.c

@@ -1167,7 +1167,7 @@ static int tx_macro_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static int tx_macro_get_channel_map(struct snd_soc_dai *dai,
+static int tx_macro_get_channel_map(const struct snd_soc_dai *dai,
 				    unsigned int *tx_num, unsigned int *tx_slot,
 				    unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/codecs/lpass-va-macro.c

@@ -892,7 +892,7 @@ static int va_macro_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static int va_macro_get_channel_map(struct snd_soc_dai *dai,
+static int va_macro_get_channel_map(const struct snd_soc_dai *dai,
 				    unsigned int *tx_num, unsigned int *tx_slot,
 				    unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/codecs/lpass-wsa-macro.c

@@ -992,7 +992,7 @@ static int wsa_macro_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static int wsa_macro_get_channel_map(struct snd_soc_dai *dai,
+static int wsa_macro_get_channel_map(const struct snd_soc_dai *dai,
 				     unsigned int *tx_num, unsigned int *tx_slot,
 				     unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/codecs/wcd9335.c

@@ -2014,7 +2014,7 @@ static int wcd9335_set_channel_map(struct snd_soc_dai *dai,
 	return 0;
 }
 
-static int wcd9335_get_channel_map(struct snd_soc_dai *dai,
+static int wcd9335_get_channel_map(const struct snd_soc_dai *dai,
 				   unsigned int *tx_num, unsigned int *tx_slot,
 				   unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/codecs/wcd934x.c

@@ -1960,7 +1960,7 @@ static int wcd934x_set_channel_map(struct snd_soc_dai *dai,
 	return 0;
 }
 
-static int wcd934x_get_channel_map(struct snd_soc_dai *dai,
+static int wcd934x_get_channel_map(const struct snd_soc_dai *dai,
 				   unsigned int *tx_num, unsigned int *tx_slot,
 				   unsigned int *rx_num, unsigned int *rx_slot)
 {

sound/soc/soc-dai.c

@@ -11,7 +11,7 @@
 #include <sound/soc-link.h>
 
 #define soc_dai_ret(dai, ret) _soc_dai_ret(dai, __func__, ret)
-static inline int _soc_dai_ret(struct snd_soc_dai *dai,
+static inline int _soc_dai_ret(const struct snd_soc_dai *dai,
 			       const char *func, int ret)
 {
 	/* Positive, Zero values are not errors */
@@ -327,7 +327,7 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
  * @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,
+int snd_soc_dai_get_channel_map(const struct snd_soc_dai *dai,
 				unsigned int *tx_num, unsigned int *tx_slot,
 				unsigned int *rx_num, unsigned int *rx_slot)
 {