ASoC: wm8990: remove some defined but unused symbols

Fix the following gcc warning:

sound/soc/codecs/wm8990.c:1309:35: warning: ‘wm8990_regmap’ defined but
not used [-Wunused-const-variable=]
 static const struct regmap_config wm8990_regmap = {
                                   ^~~~~~~~~~~~~
sound/soc/codecs/wm8990.c:490:38: warning:
‘wm8990_dapm_rxvoice_controls’ defined but not used
[-Wunused-const-variable=]
 static const struct snd_kcontrol_new wm8990_dapm_rxvoice_controls[] = {
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/soc/codecs/wm8990.c:120:35: warning: ‘out_omix_tlv’ defined but
not used [-Wunused-const-variable=]
 static const DECLARE_TLV_DB_SCALE(out_omix_tlv, -600, 0, 0);
                                   ^
sound/soc/codecs/wm8990.c:112:35: warning: ‘rec_mix_tlv’ defined but not
used [-Wunused-const-variable=]
 static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 600, 0);
                                   ^
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200407082932.41511-4-yanaijie@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8990.c

@@ -32,93 +32,14 @@ struct wm8990_priv {
 	unsigned int pcmclk;
 };
 
-static bool wm8990_volatile_register(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case WM8990_RESET:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static const struct reg_default wm8990_reg_defaults[] = {
-	{  1, 0x0000 },     /* R1  - Power Management (1) */
-	{  2, 0x6000 },     /* R2  - Power Management (2) */
-	{  3, 0x0000 },     /* R3  - Power Management (3) */
-	{  4, 0x4050 },     /* R4  - Audio Interface (1) */
-	{  5, 0x4000 },     /* R5  - Audio Interface (2) */
-	{  6, 0x01C8 },     /* R6  - Clocking (1) */
-	{  7, 0x0000 },     /* R7  - Clocking (2) */
-	{  8, 0x0040 },     /* R8  - Audio Interface (3) */
-	{  9, 0x0040 },     /* R9  - Audio Interface (4) */
-	{ 10, 0x0004 },     /* R10 - DAC CTRL */
-	{ 11, 0x00C0 },     /* R11 - Left DAC Digital Volume */
-	{ 12, 0x00C0 },     /* R12 - Right DAC Digital Volume */
-	{ 13, 0x0000 },     /* R13 - Digital Side Tone */
-	{ 14, 0x0100 },     /* R14 - ADC CTRL */
-	{ 15, 0x00C0 },     /* R15 - Left ADC Digital Volume */
-	{ 16, 0x00C0 },     /* R16 - Right ADC Digital Volume */
-
-	{ 18, 0x0000 },     /* R18 - GPIO CTRL 1 */
-	{ 19, 0x1000 },     /* R19 - GPIO1 & GPIO2 */
-	{ 20, 0x1010 },     /* R20 - GPIO3 & GPIO4 */
-	{ 21, 0x1010 },     /* R21 - GPIO5 & GPIO6 */
-	{ 22, 0x8000 },     /* R22 - GPIOCTRL 2 */
-	{ 23, 0x0800 },     /* R23 - GPIO_POL */
-	{ 24, 0x008B },     /* R24 - Left Line Input 1&2 Volume */
-	{ 25, 0x008B },     /* R25 - Left Line Input 3&4 Volume */
-	{ 26, 0x008B },     /* R26 - Right Line Input 1&2 Volume */
-	{ 27, 0x008B },     /* R27 - Right Line Input 3&4 Volume */
-	{ 28, 0x0000 },     /* R28 - Left Output Volume */
-	{ 29, 0x0000 },     /* R29 - Right Output Volume */
-	{ 30, 0x0066 },     /* R30 - Line Outputs Volume */
-	{ 31, 0x0022 },     /* R31 - Out3/4 Volume */
-	{ 32, 0x0079 },     /* R32 - Left OPGA Volume */
-	{ 33, 0x0079 },     /* R33 - Right OPGA Volume */
-	{ 34, 0x0003 },     /* R34 - Speaker Volume */
-	{ 35, 0x0003 },     /* R35 - ClassD1 */
-
-	{ 37, 0x0100 },     /* R37 - ClassD3 */
-	{ 38, 0x0079 },     /* R38 - ClassD4 */
-	{ 39, 0x0000 },     /* R39 - Input Mixer1 */
-	{ 40, 0x0000 },     /* R40 - Input Mixer2 */
-	{ 41, 0x0000 },     /* R41 - Input Mixer3 */
-	{ 42, 0x0000 },     /* R42 - Input Mixer4 */
-	{ 43, 0x0000 },     /* R43 - Input Mixer5 */
-	{ 44, 0x0000 },     /* R44 - Input Mixer6 */
-	{ 45, 0x0000 },     /* R45 - Output Mixer1 */
-	{ 46, 0x0000 },     /* R46 - Output Mixer2 */
-	{ 47, 0x0000 },     /* R47 - Output Mixer3 */
-	{ 48, 0x0000 },     /* R48 - Output Mixer4 */
-	{ 49, 0x0000 },     /* R49 - Output Mixer5 */
-	{ 50, 0x0000 },     /* R50 - Output Mixer6 */
-	{ 51, 0x0180 },     /* R51 - Out3/4 Mixer */
-	{ 52, 0x0000 },     /* R52 - Line Mixer1 */
-	{ 53, 0x0000 },     /* R53 - Line Mixer2 */
-	{ 54, 0x0000 },     /* R54 - Speaker Mixer */
-	{ 55, 0x0000 },     /* R55 - Additional Control */
-	{ 56, 0x0000 },     /* R56 - AntiPOP1 */
-	{ 57, 0x0000 },     /* R57 - AntiPOP2 */
-	{ 58, 0x0000 },     /* R58 - MICBIAS */
-
-	{ 60, 0x0008 },     /* R60 - PLL1 */
-	{ 61, 0x0031 },     /* R61 - PLL2 */
-	{ 62, 0x0026 },     /* R62 - PLL3 */
-};
-
 #define wm8990_reset(c) snd_soc_component_write(c, WM8990_RESET, 0)
 
-static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 600, 0);
-
 static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1650, 3000, 0);
 
 static const DECLARE_TLV_DB_SCALE(out_mix_tlv, 0, -2100, 0);
 
 static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -7300, 600, 0);
 
-static const DECLARE_TLV_DB_SCALE(out_omix_tlv, -600, 0, 0);
-
 static const DECLARE_TLV_DB_SCALE(out_dac_tlv, -7163, 0, 0);
 
 static const DECLARE_TLV_DB_SCALE(in_adc_tlv, -7163, 1763, 0);
@@ -486,14 +407,6 @@ static SOC_ENUM_SINGLE_DECL(wm8990_ainrmux_enum,
 static const struct snd_kcontrol_new wm8990_dapm_ainrmux_controls =
 SOC_DAPM_ENUM("Route", wm8990_ainrmux_enum);
 
-/* RXVOICE */
-static const struct snd_kcontrol_new wm8990_dapm_rxvoice_controls[] = {
-SOC_DAPM_SINGLE_TLV("LIN4/RXN", WM8990_INPUT_MIXER5, WM8990_LR4BVOL_SHIFT,
-			WM8990_LR4BVOL_MASK, 0, in_mix_tlv),
-SOC_DAPM_SINGLE_TLV("RIN4/RXP", WM8990_INPUT_MIXER6, WM8990_RL4BVOL_SHIFT,
-			WM8990_RL4BVOL_MASK, 0, in_mix_tlv),
-};
-
 /* LOMIX */
 static const struct snd_kcontrol_new wm8990_dapm_lomix_controls[] = {
 SOC_DAPM_SINGLE("LOMIX Right ADC Bypass Switch", WM8990_OUTPUT_MIXER1,
@@ -1306,17 +1219,6 @@ static const struct snd_soc_component_driver soc_component_dev_wm8990 = {
 	.non_legacy_dai_naming	= 1,
 };
 
-static const struct regmap_config wm8990_regmap = {
-	.reg_bits = 8,
-	.val_bits = 16,
-
-	.max_register = WM8990_PLL3,
-	.volatile_reg = wm8990_volatile_register,
-	.reg_defaults = wm8990_reg_defaults,
-	.num_reg_defaults = ARRAY_SIZE(wm8990_reg_defaults),
-	.cache_type = REGCACHE_RBTREE,
-};
-
 static int wm8990_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {