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/20200105144823.29547-15-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index 51af766..a89a7e6 100644 (file)
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -100,7 +100,7 @@ void snd_emu10k1_voice_init(struct snd_emu10k1 *emu, int ch)
        }
 }
 
-static unsigned int spi_dac_init[] = {
+static const unsigned int spi_dac_init[] = {
                0x00ff,
                0x02ff,
                0x0400,
@@ -124,7 +124,7 @@ static unsigned int spi_dac_init[] = {
                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 */
@@ -2050,7 +2050,7 @@ int snd_emu10k1_create(struct snd_card *card,
 }
 
 #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,
@@ -2059,7 +2059,7 @@ static unsigned char saved_regs[] = {
        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 */
@@ -2094,7 +2094,7 @@ static void free_pm_buffer(struct snd_emu10k1 *emu)
 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;
@@ -2127,7 +2127,7 @@ void snd_emu10k1_resume_init(struct snd_emu10k1 *emu)
 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);

diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index e0e076a..6b7ff4a 100644 (file)
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -46,7 +46,7 @@ MODULE_PARM_DESC(high_res_gpr_volume, "GPR mixer controls use 31-bit range.");
  *  Tables
  */ 
 
-static char *fxbuses[16] = {
+static const char * const fxbuses[16] = {
        /* 0x00 */ "PCM Left",
        /* 0x01 */ "PCM Right",
        /* 0x02 */ "PCM Surround Left",
@@ -65,7 +65,7 @@ static char *fxbuses[16] = {
        /* 0x0f */ NULL
 };
 
-static char *creative_ins[16] = {
+static const char * const creative_ins[16] = {
        /* 0x00 */ "AC97 Left",
        /* 0x01 */ "AC97 Right",
        /* 0x02 */ "TTL IEC958 Left",
@@ -84,7 +84,7 @@ static char *creative_ins[16] = {
        /* 0x0f */ NULL
 };
 
-static char *audigy_ins[16] = {
+static const char * const audigy_ins[16] = {
        /* 0x00 */ "AC97 Left",
        /* 0x01 */ "AC97 Right",
        /* 0x02 */ "Audigy CD Left",
@@ -103,7 +103,7 @@ static char *audigy_ins[16] = {
        /* 0x0f */ NULL
 };
 
-static char *creative_outs[32] = {
+static const char * const creative_outs[32] = {
        /* 0x00 */ "AC97 Left",
        /* 0x01 */ "AC97 Right",
        /* 0x02 */ "Optical IEC958 Left",
@@ -138,7 +138,7 @@ static char *creative_outs[32] = {
        /* 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",
@@ -2485,7 +2485,7 @@ static int snd_emu10k1_fx8010_open(struct snd_hwdep * hw, struct file *file)
        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);
@@ -2496,7 +2496,7 @@ static void copy_string(char *dst, char *src, char *null, int 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;
 

diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c
index 46c79df..8a6cbe6 100644 (file)
--- a/sound/pci/emu10k1/emumixer.c
+++ b/sound/pci/emu10k1/emumixer.c
@@ -183,7 +183,7 @@ static const char * const emu1616_src_texts[] = {
 /*
  * 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 */
@@ -240,7 +240,7 @@ static unsigned int emu1010_src_regs[] = {
 };
 
 /* 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,
@@ -296,7 +296,7 @@ static unsigned int emu1616_src_regs[] = {
  * 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 */
@@ -324,7 +324,7 @@ static unsigned int emu1010_output_dst[] = {
 };
 
 /* 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,
@@ -350,7 +350,7 @@ static unsigned int emu1616_output_dst[] = {
  *   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,
@@ -1778,8 +1778,8 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
        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",
@@ -1793,13 +1793,13 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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 */
@@ -1826,7 +1826,7 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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", */
@@ -1836,7 +1836,7 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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",
@@ -1845,7 +1845,7 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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",
@@ -1854,7 +1854,7 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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",
@@ -1872,7 +1872,7 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
                "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",

diff --git a/sound/pci/emu10k1/emuproc.c b/sound/pci/emu10k1/emuproc.c
index 637446f..6e20cca 100644 (file)
--- a/sound/pci/emu10k1/emuproc.c
+++ b/sound/pci/emu10k1/emuproc.c
@@ -26,10 +26,10 @@ static void snd_emu10k1_proc_spdif_status(struct snd_emu10k1 * emu,
                                          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);
@@ -67,7 +67,7 @@ static void snd_emu10k1_proc_read(struct snd_info_entry *entry,
                                  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",
@@ -102,7 +102,7 @@ static void snd_emu10k1_proc_read(struct snd_info_entry *entry,
                /* 31 */ "???"
        };
 
-       static char *audigy_outs[64] = {
+       static const char * const audigy_outs[64] = {
                /* 00 */ "Digital Front Left",
                /* 01 */ "Digital Front Right",
                /* 02 */ "Digital Center",
@@ -172,7 +172,7 @@ static void snd_emu10k1_proc_read(struct snd_info_entry *entry,
        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");
@@ -262,7 +262,7 @@ static void snd_emu10k1_proc_spdif_read(struct snd_info_entry *entry,
 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);

diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c
index a3f1de7..e15092c 100644 (file)
--- a/sound/pci/emu10k1/io.c
+++ b/sound/pci/emu10k1/io.c
@@ -510,7 +510,7 @@ void snd_emu10k1_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned
 
 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,
@@ -528,7 +528,7 @@ unsigned int snd_emu10k1_rate_to_pitch(unsigned int rate)
                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,