ALSA: hdspm: More constifications

Apply const prefix to each possible place: the string arrays, the
channel map tables and callers.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/20200105144823.29547-20-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 35 insertions, 31 deletions

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index f926899e4755..2212d5799151 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -637,7 +637,7 @@ MODULE_SUPPORTED_DEVICE("{{RME HDSPM-MADI}}");
 #define HDSPM_SPEED_QUAD   2
 
 /* names for speed modes */
-static char *hdspm_speed_names[] = { "single", "double", "quad" };
+static const char * const hdspm_speed_names[] = { "single", "double", "quad" };
 
 static const char *const texts_autosync_aes_tco[] = { "Word Clock",
 					  "AES1", "AES2", "AES3", "AES4",
@@ -684,7 +684,7 @@ static const char *const texts_freq[] = {
 	"192 kHz"
 };
 
-static char *texts_ports_madi[] = {
+static const char * const texts_ports_madi[] = {
 	"MADI.1", "MADI.2", "MADI.3", "MADI.4", "MADI.5", "MADI.6",
 	"MADI.7", "MADI.8", "MADI.9", "MADI.10", "MADI.11", "MADI.12",
 	"MADI.13", "MADI.14", "MADI.15", "MADI.16", "MADI.17", "MADI.18",
@@ -699,7 +699,7 @@ static char *texts_ports_madi[] = {
 };
 
 
-static char *texts_ports_raydat_ss[] = {
+static const char * const texts_ports_raydat_ss[] = {
 	"ADAT1.1", "ADAT1.2", "ADAT1.3", "ADAT1.4", "ADAT1.5", "ADAT1.6",
 	"ADAT1.7", "ADAT1.8", "ADAT2.1", "ADAT2.2", "ADAT2.3", "ADAT2.4",
 	"ADAT2.5", "ADAT2.6", "ADAT2.7", "ADAT2.8", "ADAT3.1", "ADAT3.2",
@@ -710,7 +710,7 @@ static char *texts_ports_raydat_ss[] = {
 	"SPDIF.L", "SPDIF.R"
 };
 
-static char *texts_ports_raydat_ds[] = {
+static const char * const texts_ports_raydat_ds[] = {
 	"ADAT1.1", "ADAT1.2", "ADAT1.3", "ADAT1.4",
 	"ADAT2.1", "ADAT2.2", "ADAT2.3", "ADAT2.4",
 	"ADAT3.1", "ADAT3.2", "ADAT3.3", "ADAT3.4",
@@ -719,7 +719,7 @@ static char *texts_ports_raydat_ds[] = {
 	"SPDIF.L", "SPDIF.R"
 };
 
-static char *texts_ports_raydat_qs[] = {
+static const char * const texts_ports_raydat_qs[] = {
 	"ADAT1.1", "ADAT1.2",
 	"ADAT2.1", "ADAT2.2",
 	"ADAT3.1", "ADAT3.2",
@@ -729,7 +729,7 @@ static char *texts_ports_raydat_qs[] = {
 };
 
 
-static char *texts_ports_aio_in_ss[] = {
+static const char * const texts_ports_aio_in_ss[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -738,7 +738,7 @@ static char *texts_ports_aio_in_ss[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aio_out_ss[] = {
+static const char * const texts_ports_aio_out_ss[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -748,7 +748,7 @@ static char *texts_ports_aio_out_ss[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aio_in_ds[] = {
+static const char * const texts_ports_aio_in_ds[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -756,7 +756,7 @@ static char *texts_ports_aio_in_ds[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aio_out_ds[] = {
+static const char * const texts_ports_aio_out_ds[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -765,7 +765,7 @@ static char *texts_ports_aio_out_ds[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aio_in_qs[] = {
+static const char * const texts_ports_aio_in_qs[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -773,7 +773,7 @@ static char *texts_ports_aio_in_qs[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aio_out_qs[] = {
+static const char * const texts_ports_aio_out_qs[] = {
 	"Analogue.L", "Analogue.R",
 	"AES.L", "AES.R",
 	"SPDIF.L", "SPDIF.R",
@@ -782,7 +782,7 @@ static char *texts_ports_aio_out_qs[] = {
 	"AEB.1", "AEB.2", "AEB.3", "AEB.4"
 };
 
-static char *texts_ports_aes32[] = {
+static const char * const texts_ports_aes32[] = {
 	"AES.1", "AES.2", "AES.3", "AES.4", "AES.5", "AES.6", "AES.7",
 	"AES.8", "AES.9.", "AES.10", "AES.11", "AES.12", "AES.13", "AES.14",
 	"AES.15", "AES.16"
@@ -796,7 +796,7 @@ static char *texts_ports_aes32[] = {
    where the data for that channel can be read/written from/to.
 */
 
-static char channel_map_unity_ss[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_unity_ss[HDSPM_MAX_CHANNELS] = {
 	0, 1, 2, 3, 4, 5, 6, 7,
 	8, 9, 10, 11, 12, 13, 14, 15,
 	16, 17, 18, 19, 20, 21, 22, 23,
@@ -807,7 +807,7 @@ static char channel_map_unity_ss[HDSPM_MAX_CHANNELS] = {
 	56, 57, 58, 59, 60, 61, 62, 63
 };
 
-static char channel_map_raydat_ss[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_raydat_ss[HDSPM_MAX_CHANNELS] = {
 	4, 5, 6, 7, 8, 9, 10, 11,	/* ADAT 1 */
 	12, 13, 14, 15, 16, 17, 18, 19,	/* ADAT 2 */
 	20, 21, 22, 23, 24, 25, 26, 27,	/* ADAT 3 */
@@ -820,7 +820,7 @@ static char channel_map_raydat_ss[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1,
 };
 
-static char channel_map_raydat_ds[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_raydat_ds[HDSPM_MAX_CHANNELS] = {
 	4, 5, 6, 7,		/* ADAT 1 */
 	8, 9, 10, 11,		/* ADAT 2 */
 	12, 13, 14, 15,		/* ADAT 3 */
@@ -835,7 +835,7 @@ static char channel_map_raydat_ds[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1,
 };
 
-static char channel_map_raydat_qs[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_raydat_qs[HDSPM_MAX_CHANNELS] = {
 	4, 5,			/* ADAT 1 */
 	6, 7,			/* ADAT 2 */
 	8, 9,			/* ADAT 3 */
@@ -851,7 +851,7 @@ static char channel_map_raydat_qs[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1,
 };
 
-static char channel_map_aio_in_ss[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_in_ss[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line in */
 	8, 9,			/* aes in, */
 	10, 11,			/* spdif in */
@@ -865,7 +865,7 @@ static char channel_map_aio_in_ss[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1,
 };
 
-static char channel_map_aio_out_ss[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_out_ss[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line out */
 	8, 9,			/* aes out */
 	10, 11,			/* spdif out */
@@ -880,7 +880,7 @@ static char channel_map_aio_out_ss[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1,
 };
 
-static char channel_map_aio_in_ds[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_in_ds[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line in */
 	8, 9,			/* aes in */
 	10, 11,			/* spdif in */
@@ -895,7 +895,7 @@ static char channel_map_aio_in_ds[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1
 };
 
-static char channel_map_aio_out_ds[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_out_ds[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line out */
 	8, 9,			/* aes out */
 	10, 11,			/* spdif out */
@@ -910,7 +910,7 @@ static char channel_map_aio_out_ds[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1
 };
 
-static char channel_map_aio_in_qs[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_in_qs[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line in */
 	8, 9,			/* aes in */
 	10, 11,			/* spdif in */
@@ -925,7 +925,7 @@ static char channel_map_aio_in_qs[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1
 };
 
-static char channel_map_aio_out_qs[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aio_out_qs[HDSPM_MAX_CHANNELS] = {
 	0, 1,			/* line out */
 	8, 9,			/* aes out */
 	10, 11,			/* spdif out */
@@ -941,7 +941,7 @@ static char channel_map_aio_out_qs[HDSPM_MAX_CHANNELS] = {
 	-1, -1, -1, -1, -1, -1, -1, -1
 };
 
-static char channel_map_aes32[HDSPM_MAX_CHANNELS] = {
+static const char channel_map_aes32[HDSPM_MAX_CHANNELS] = {
 	0, 1, 2, 3, 4, 5, 6, 7,
 	8, 9, 10, 11, 12, 13, 14, 15,
 	-1, -1, -1, -1, -1, -1, -1, -1,
@@ -1010,17 +1010,21 @@ struct hdspm {
 	unsigned char max_channels_in;
 	unsigned char max_channels_out;
 
-	signed char *channel_map_in;
-	signed char *channel_map_out;
+	const signed char *channel_map_in;
+	const signed char *channel_map_out;
 
-	signed char *channel_map_in_ss, *channel_map_in_ds, *channel_map_in_qs;
-	signed char *channel_map_out_ss, *channel_map_out_ds, *channel_map_out_qs;
+	const signed char *channel_map_in_ss, *channel_map_in_ds, *channel_map_in_qs;
+	const signed char *channel_map_out_ss, *channel_map_out_ds, *channel_map_out_qs;
 
-	char **port_names_in;
-	char **port_names_out;
+	const char * const *port_names_in;
+	const char * const *port_names_out;
 
-	char **port_names_in_ss, **port_names_in_ds, **port_names_in_qs;
-	char **port_names_out_ss, **port_names_out_ds, **port_names_out_qs;
+	const char * const *port_names_in_ss;
+	const char * const *port_names_in_ds;
+	const char * const *port_names_in_qs;
+	const char * const *port_names_out_ss;
+	const char * const *port_names_out_ds;
+	const char * const *port_names_out_qs;
 
 	unsigned char *playback_buffer;	/* suitably aligned address */
 	unsigned char *capture_buffer;	/* suitably aligned address */