ALSA: emu10k1: More constifications

Apply const prefix to the remaining possible places: the static tables
for init verbs and registers, the string arrays, the conversion
tables, etc.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/emu10k1/emu10k1_main.c

···
 	}
 }
 
-static unsigned int spi_dac_init[] = {
+static const unsigned int spi_dac_init[] = {
 		0x00ff,
 		0x02ff,
 		0x0400,
···
 		0x1400,
 };
 
-static unsigned int i2c_adc_init[][2] = {
+static const unsigned int i2c_adc_init[][2] = {
 	{ 0x17, 0x00 }, /* Reset */
 	{ 0x07, 0x00 }, /* Timeout */
 	{ 0x0b, 0x22 },  /* Interface control */
···
 }
 
 #ifdef CONFIG_PM_SLEEP
-static unsigned char saved_regs[] = {
+static const unsigned char saved_regs[] = {
 	CPF, PTRX, CVCF, VTFT, Z1, Z2, PSST, DSL, CCCA, CCR, CLP,
 	FXRT, MAPA, MAPB, ENVVOL, ATKHLDV, DCYSUSV, LFOVAL1, ENVVAL,
 	ATKHLDM, DCYSUSM, LFOVAL2, IP, IFATN, PEFE, FMMOD, TREMFRQ, FM2FRQ2,
···
 	SPBYPASS, AC97SLOT, CDSRCS, GPSRCS, ZVSRCS, MICIDX, ADCIDX, FXIDX,
 	0xff /* end */
 };
-static unsigned char saved_regs_audigy[] = {
+static const unsigned char saved_regs_audigy[] = {
 	A_ADCIDX, A_MICIDX, A_FXWC1, A_FXWC2, A_SAMPLE_RATE,
 	A_FXRT2, A_SENDAMOUNTS, A_FXRT1,
 	0xff /* end */
···
 void snd_emu10k1_suspend_regs(struct snd_emu10k1 *emu)
 {
 	int i;
-	unsigned char *reg;
+	const unsigned char *reg;
 	unsigned int *val;
 
 	val = emu->saved_ptr;
···
 void snd_emu10k1_resume_regs(struct snd_emu10k1 *emu)
 {
 	int i;
-	unsigned char *reg;
+	const unsigned char *reg;
 	unsigned int *val;
 
 	snd_emu10k1_audio_enable(emu);

sound/pci/emu10k1/emufx.c

···
  *  Tables
  */ 
 
-static char *fxbuses[16] = {
+static const char * const fxbuses[16] = {
 	/* 0x00 */ "PCM Left",
 	/* 0x01 */ "PCM Right",
 	/* 0x02 */ "PCM Surround Left",
···
 	/* 0x0f */ NULL
 };
 
-static char *creative_ins[16] = {
+static const char * const creative_ins[16] = {
 	/* 0x00 */ "AC97 Left",
 	/* 0x01 */ "AC97 Right",
 	/* 0x02 */ "TTL IEC958 Left",
···
 	/* 0x0f */ NULL
 };
 
-static char *audigy_ins[16] = {
+static const char * const audigy_ins[16] = {
 	/* 0x00 */ "AC97 Left",
 	/* 0x01 */ "AC97 Right",
 	/* 0x02 */ "Audigy CD Left",
···
 	/* 0x0f */ NULL
 };
 
-static char *creative_outs[32] = {
+static const char * const creative_outs[32] = {
 	/* 0x00 */ "AC97 Left",
 	/* 0x01 */ "AC97 Right",
 	/* 0x02 */ "Optical IEC958 Left",
···
 	/* 0x1f */ NULL,
 };
 
-static char *audigy_outs[32] = {
+static const char * const audigy_outs[32] = {
 	/* 0x00 */ "Digital Front Left",
 	/* 0x01 */ "Digital Front Right",
 	/* 0x02 */ "Digital Center",
···
 	return 0;
 }
 
-static void copy_string(char *dst, char *src, char *null, int idx)
+static void copy_string(char *dst, const char *src, const char *null, int idx)
 {
 	if (src == NULL)
 		sprintf(dst, "%s %02X", null, idx);
···
 static void snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
 				   struct snd_emu10k1_fx8010_info *info)
 {
-	char **fxbus, **extin, **extout;
+	const char * const *fxbus, * const *extin, * const *extout;
 	unsigned short fxbus_mask, extin_mask, extout_mask;
 	int res;
 

sound/pci/emu10k1/emumixer.c

···
 /*
  * List of data sources available for each destination
  */
-static unsigned int emu1010_src_regs[] = {
+static const unsigned int emu1010_src_regs[] = {
 	EMU_SRC_SILENCE,/* 0 */
 	EMU_SRC_DOCK_MIC_A1, /* 1 */
 	EMU_SRC_DOCK_MIC_B1, /* 2 */
···
 };
 
 /* 1616(m) cardbus */
-static unsigned int emu1616_src_regs[] = {
+static const unsigned int emu1616_src_regs[] = {
 	EMU_SRC_SILENCE,
 	EMU_SRC_DOCK_MIC_A1,
 	EMU_SRC_DOCK_MIC_B1,
···
  * Data destinations - physical EMU outputs.
  * Each destination has an enum mixer control to choose a data source
  */
-static unsigned int emu1010_output_dst[] = {
+static const unsigned int emu1010_output_dst[] = {
 	EMU_DST_DOCK_DAC1_LEFT1, /* 0 */
 	EMU_DST_DOCK_DAC1_RIGHT1, /* 1 */
 	EMU_DST_DOCK_DAC2_LEFT1, /* 2 */
···
 };
 
 /* 1616(m) cardbus */
-static unsigned int emu1616_output_dst[] = {
+static const unsigned int emu1616_output_dst[] = {
 	EMU_DST_DOCK_DAC1_LEFT1,
 	EMU_DST_DOCK_DAC1_RIGHT1,
 	EMU_DST_DOCK_DAC2_LEFT1,
···
  *   capture (EMU32 + I2S links)
  * Each destination has an enum mixer control to choose a data source
  */
-static unsigned int emu1010_input_dst[] = {
+static const unsigned int emu1010_input_dst[] = {
 	EMU_DST_ALICE2_EMU32_0,
 	EMU_DST_ALICE2_EMU32_1,
 	EMU_DST_ALICE2_EMU32_2,
···
 	int err, pcm;
 	struct snd_kcontrol *kctl;
 	struct snd_card *card = emu->card;
-	char **c;
-	static char *emu10k1_remove_ctls[] = {
+	const char * const *c;
+	static const char * const emu10k1_remove_ctls[] = {
 		/* no AC97 mono, surround, center/lfe */
 		"Master Mono Playback Switch",
 		"Master Mono Playback Volume",
···
 		"LFE Playback Volume",
 		NULL
 	};
-	static char *emu10k1_rename_ctls[] = {
+	static const char * const emu10k1_rename_ctls[] = {
 		"Surround Digital Playback Volume", "Surround Playback Volume",
 		"Center Digital Playback Volume", "Center Playback Volume",
 		"LFE Digital Playback Volume", "LFE Playback Volume",
 		NULL
 	};
-	static char *audigy_remove_ctls[] = {
+	static const char * const audigy_remove_ctls[] = {
 		/* Master/PCM controls on ac97 of Audigy has no effect */
 		/* On the Audigy2 the AC97 playback is piped into
 		 * the Philips ADC for 24bit capture */
···
 		"External Amplifier",
 		NULL
 	};
-	static char *audigy_rename_ctls[] = {
+	static const char * const audigy_rename_ctls[] = {
 		/* use conventional names */
 		"Wave Playback Volume", "PCM Playback Volume",
 		/* "Wave Capture Volume", "PCM Capture Volume", */
···
 		"Master Mono Playback Volume", "Phone Output Playback Volume",
 		NULL
 	};
-	static char *audigy_rename_ctls_i2c_adc[] = {
+	static const char * const audigy_rename_ctls_i2c_adc[] = {
 		//"Analog Mix Capture Volume","OLD Analog Mix Capture Volume",
 		"Line Capture Volume", "Analog Mix Capture Volume",
 		"Wave Playback Volume", "OLD PCM Playback Volume",
···
 		"CD Capture Volume", "IEC958 Optical Capture Volume",
 		NULL
 	};
-	static char *audigy_remove_ctls_i2c_adc[] = {
+	static const char * const audigy_remove_ctls_i2c_adc[] = {
 		/* On the Audigy2 ZS Notebook
 		 * Capture via WM8775  */
 		"Mic Capture Volume",
···
 		"IEC958 Optical Capture Volume",
 		NULL
 	};
-	static char *audigy_remove_ctls_1361t_adc[] = {
+	static const char * const audigy_remove_ctls_1361t_adc[] = {
 		/* On the Audigy2 the AC97 playback is piped into
 		 * the Philips ADC for 24bit capture */
 		"PCM Playback Switch",
···
 		"Line2 Capture Volume",
 		NULL
 	};
-	static char *audigy_rename_ctls_1361t_adc[] = {
+	static const char * const audigy_rename_ctls_1361t_adc[] = {
 		"Master Playback Switch", "Master Capture Switch",
 		"Master Playback Volume", "Master Capture Volume",
 		"Wave Master Playback Volume", "Master Playback Volume",

sound/pci/emu10k1/emuproc.c

···
 					  int status_reg,
 					  int rate_reg)
 {
-	static char *clkaccy[4] = { "1000ppm", "50ppm", "variable", "unknown" };
-	static int samplerate[16] = { 44100, 1, 48000, 32000, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
-	static char *channel[16] = { "unspec", "left", "right", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" };
-	static char *emphasis[8] = { "none", "50/15 usec 2 channel", "2", "3", "4", "5", "6", "7" };
+	static const char * const clkaccy[4] = { "1000ppm", "50ppm", "variable", "unknown" };
+	static const int samplerate[16] = { 44100, 1, 48000, 32000, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
+	static const char * const channel[16] = { "unspec", "left", "right", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" };
+	static const char * const emphasis[8] = { "none", "50/15 usec 2 channel", "2", "3", "4", "5", "6", "7" };
 	unsigned int status, rate = 0;
 	
 	status = snd_emu10k1_ptr_read(emu, status_reg, 0);
···
 				  struct snd_info_buffer *buffer)
 {
 	/* FIXME - output names are in emufx.c too */
-	static char *creative_outs[32] = {
+	static const char * const creative_outs[32] = {
 		/* 00 */ "AC97 Left",
 		/* 01 */ "AC97 Right",
 		/* 02 */ "Optical IEC958 Left",
···
 		/* 31 */ "???"
 	};
 
-	static char *audigy_outs[64] = {
+	static const char * const audigy_outs[64] = {
 		/* 00 */ "Digital Front Left",
 		/* 01 */ "Digital Front Right",
 		/* 02 */ "Digital Center",
···
 	struct snd_emu10k1 *emu = entry->private_data;
 	unsigned int val, val1;
 	int nefx = emu->audigy ? 64 : 32;
-	char **outputs = emu->audigy ? audigy_outs : creative_outs;
+	const char * const *outputs = emu->audigy ? audigy_outs : creative_outs;
 	int idx;
 	
 	snd_iprintf(buffer, "EMU10K1\n\n");
···
 static void snd_emu10k1_proc_rates_read(struct snd_info_entry *entry, 
 				  struct snd_info_buffer *buffer)
 {
-	static int samplerate[8] = { 44100, 48000, 96000, 192000, 4, 5, 6, 7 };
+	static const int samplerate[8] = { 44100, 48000, 96000, 192000, 4, 5, 6, 7 };
 	struct snd_emu10k1 *emu = entry->private_data;
 	unsigned int val, tmp, n;
 	val = snd_emu10k1_ptr20_read(emu, CAPTURE_RATE_STATUS, 0);

sound/pci/emu10k1/io.c

···
 
 unsigned int snd_emu10k1_rate_to_pitch(unsigned int rate)
 {
-	static u32 logMagTable[128] = {
+	static const u32 logMagTable[128] = {
 		0x00000, 0x02dfc, 0x05b9e, 0x088e6, 0x0b5d6, 0x0e26f, 0x10eb3, 0x13aa2,
 		0x1663f, 0x1918a, 0x1bc84, 0x1e72e, 0x2118b, 0x23b9a, 0x2655d, 0x28ed5,
 		0x2b803, 0x2e0e8, 0x30985, 0x331db, 0x359eb, 0x381b6, 0x3a93d, 0x3d081,
···
 		0xe829f, 0xe9b31, 0xeb3a9, 0xecc08, 0xee44c, 0xefc78, 0xf148a, 0xf2c83,
 		0xf4463, 0xf5c2a, 0xf73da, 0xf8b71, 0xfa2f0, 0xfba57, 0xfd1a7, 0xfe8df
 	};
-	static char logSlopeTable[128] = {
+	static const char logSlopeTable[128] = {
 		0x5c, 0x5c, 0x5b, 0x5a, 0x5a, 0x59, 0x58, 0x58,
 		0x57, 0x56, 0x56, 0x55, 0x55, 0x54, 0x53, 0x53,
 		0x52, 0x52, 0x51, 0x51, 0x50, 0x50, 0x4f, 0x4f,