ASoC: codecs: wcd family: cleanups

Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>:

Set of simple cleanups from similar issues in all Qualcomm WCD93xx
codecs.

The first patch "ASoC: codecs: wcd-mbhc: Constify passed MBHC reg
fields" is a requirement for few others, but except this they are
independent.

sound/soc/codecs/wcd-mbhc-v2.c

@@ -50,7 +50,7 @@ struct wcd_mbhc {
 	struct wcd_mbhc_config *cfg;
 	const struct wcd_mbhc_cb *mbhc_cb;
 	const struct wcd_mbhc_intr *intr_ids;
-	struct wcd_mbhc_field *fields;
+	const struct wcd_mbhc_field *fields;
 	/* Delayed work to report long button press */
 	struct delayed_work mbhc_btn_dwork;
 	/* Work to handle plug report */
@@ -1505,7 +1505,7 @@ EXPORT_SYMBOL(wcd_dt_parse_mbhc_data);
 struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
 			       const struct wcd_mbhc_cb *mbhc_cb,
 			       const struct wcd_mbhc_intr *intr_ids,
-			       struct wcd_mbhc_field *fields,
+			       const struct wcd_mbhc_field *fields,
 			       bool impedance_det_en)
 {
 	struct device *dev = component->dev;

sound/soc/codecs/wcd-mbhc-v2.h

@@ -279,7 +279,7 @@ int wcd_mbhc_typec_report_unplug(struct wcd_mbhc *mbhc);
 struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
 		      const struct wcd_mbhc_cb *mbhc_cb,
 		      const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,
-		      struct wcd_mbhc_field *fields,
+		      const struct wcd_mbhc_field *fields,
 		      bool impedance_det_en);
 int wcd_mbhc_get_impedance(struct wcd_mbhc *mbhc, uint32_t *zl,
 			   uint32_t *zr);
@@ -300,7 +300,7 @@ static inline void wcd_mbhc_stop(struct wcd_mbhc *mbhc)
 static inline struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
 		      const struct wcd_mbhc_cb *mbhc_cb,
 		      const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,
-		      struct wcd_mbhc_field *fields,
+		      const struct wcd_mbhc_field *fields,
 		      bool impedance_det_en)
 {
 	return ERR_PTR(-ENOTSUPP);

sound/soc/codecs/wcd9335.c

@@ -297,7 +297,6 @@ struct wcd9335_codec {
 	struct clk *mclk;
 	struct clk *native_clk;
 	u32 mclk_rate;
-	u8 version;
 
 	struct slim_device *slim;
 	struct slim_device *slim_ifc_dev;
@@ -345,10 +344,6 @@ struct wcd9335_codec {
 	int dmic_0_1_clk_cnt;
 	int dmic_2_3_clk_cnt;
 	int dmic_4_5_clk_cnt;
-	int dmic_sample_rate;
-	int mad_dmic_sample_rate;
-
-	int native_clk_users;
 };
 
 struct wcd9335_irq {
@@ -397,13 +392,13 @@ struct interp_sample_rate {
 	int rate_val;
 };
 
-static struct interp_sample_rate int_mix_rate_val[] = {
+static const struct interp_sample_rate int_mix_rate_val[] = {
 	{48000, 0x4},	/* 48K */
 	{96000, 0x5},	/* 96K */
 	{192000, 0x6},	/* 192K */
 };
 
-static struct interp_sample_rate int_prim_rate_val[] = {
+static const struct interp_sample_rate int_prim_rate_val[] = {
 	{8000, 0x0},	/* 8K */
 	{16000, 0x1},	/* 16K */
 	{24000, -EINVAL},/* 24K */
@@ -2847,56 +2842,15 @@ static int wcd9335_codec_enable_dec(struct snd_soc_dapm_widget *w,
 }
 
 static u8 wcd9335_get_dmic_clk_val(struct snd_soc_component *component,
-				 u32 mclk_rate, u32 dmic_clk_rate)
+				 u32 mclk_rate)
 {
-	u32 div_factor;
 	u8 dmic_ctl_val;
 
-	dev_err(component->dev,
-		"%s: mclk_rate = %d, dmic_sample_rate = %d\n",
-		__func__, mclk_rate, dmic_clk_rate);
-
-	/* Default value to return in case of error */
 	if (mclk_rate == WCD9335_MCLK_CLK_9P6MHZ)
 		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_2;
 	else
 		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_3;
 
-	if (dmic_clk_rate == 0) {
-		dev_err(component->dev,
-			"%s: dmic_sample_rate cannot be 0\n",
-			__func__);
-		goto done;
-	}
-
-	div_factor = mclk_rate / dmic_clk_rate;
-	switch (div_factor) {
-	case 2:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_2;
-		break;
-	case 3:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_3;
-		break;
-	case 4:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_4;
-		break;
-	case 6:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_6;
-		break;
-	case 8:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_8;
-		break;
-	case 16:
-		dmic_ctl_val = WCD9335_DMIC_CLK_DIV_16;
-		break;
-	default:
-		dev_err(component->dev,
-			"%s: Invalid div_factor %u, clk_rate(%u), dmic_rate(%u)\n",
-			__func__, div_factor, mclk_rate, dmic_clk_rate);
-		break;
-	}
-
-done:
 	return dmic_ctl_val;
 }
 
@@ -2950,11 +2904,7 @@ static int wcd9335_codec_enable_dmic(struct snd_soc_dapm_widget *w,
 
 	switch (event) {
 	case SND_SOC_DAPM_PRE_PMU:
-		dmic_rate_val =
-			wcd9335_get_dmic_clk_val(comp,
-					wcd->mclk_rate,
-					wcd->dmic_sample_rate);
-
+		dmic_rate_val = wcd9335_get_dmic_clk_val(comp, wcd->mclk_rate);
 		(*dmic_clk_cnt)++;
 		if (*dmic_clk_cnt == 1) {
 			snd_soc_component_update_bits(comp, dmic_clk_reg,
@@ -2966,10 +2916,7 @@ static int wcd9335_codec_enable_dmic(struct snd_soc_dapm_widget *w,
 
 		break;
 	case SND_SOC_DAPM_POST_PMD:
-		dmic_rate_val =
-			wcd9335_get_dmic_clk_val(comp,
-					wcd->mclk_rate,
-					wcd->mad_dmic_sample_rate);
+		dmic_rate_val = wcd9335_get_dmic_clk_val(comp, wcd->mclk_rate);
 		(*dmic_clk_cnt)--;
 		if (*dmic_clk_cnt  == 0) {
 			snd_soc_component_update_bits(comp, dmic_clk_reg,
@@ -4026,7 +3973,7 @@ static irqreturn_t wcd9335_slimbus_irq(int irq, void *data)
 	return ret;
 }
 
-static struct wcd9335_irq wcd9335_irqs[] = {
+static const struct wcd9335_irq wcd9335_irqs[] = {
 	{
 		.irq = WCD9335_IRQ_SLIMBUS,
 		.handler = wcd9335_slimbus_irq,
@@ -4963,7 +4910,7 @@ static bool wcd9335_is_volatile_register(struct device *dev, unsigned int reg)
 	}
 }
 
-static struct regmap_config wcd9335_regmap_config = {
+static const struct regmap_config wcd9335_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 8,
 	.cache_type = REGCACHE_MAPLE,
@@ -4987,7 +4934,7 @@ static const struct regmap_range_cfg wcd9335_ifc_ranges[] = {
 	},
 };
 
-static struct regmap_config wcd9335_ifc_regmap_config = {
+static const struct regmap_config wcd9335_ifc_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 8,
 	.can_multi_write = true,
@@ -5034,22 +4981,16 @@ static int wcd9335_parse_dt(struct wcd9335_codec *wcd)
 	int ret;
 
 	wcd->reset_gpio = of_get_named_gpio(np,	"reset-gpios", 0);
-	if (wcd->reset_gpio < 0) {
-		dev_err(dev, "Reset GPIO missing from DT\n");
-		return wcd->reset_gpio;
-	}
+	if (wcd->reset_gpio < 0)
+		return dev_err_probe(dev, wcd->reset_gpio, "Reset GPIO missing from DT\n");
 
 	wcd->mclk = devm_clk_get(dev, "mclk");
-	if (IS_ERR(wcd->mclk)) {
-		dev_err(dev, "mclk not found\n");
-		return PTR_ERR(wcd->mclk);
-	}
+	if (IS_ERR(wcd->mclk))
+		return dev_err_probe(dev, PTR_ERR(wcd->mclk), "mclk not found\n");
 
 	wcd->native_clk = devm_clk_get(dev, "slimbus");
-	if (IS_ERR(wcd->native_clk)) {
-		dev_err(dev, "slimbus clock not found\n");
-		return PTR_ERR(wcd->native_clk);
-	}
+	if (IS_ERR(wcd->native_clk))
+		return dev_err_probe(dev, PTR_ERR(wcd->native_clk), "slimbus clock not found\n");
 
 	wcd->supplies[0].supply = "vdd-buck";
 	wcd->supplies[1].supply = "vdd-buck-sido";
@@ -5058,10 +4999,8 @@ static int wcd9335_parse_dt(struct wcd9335_codec *wcd)
 	wcd->supplies[4].supply = "vdd-io";
 
 	ret = regulator_bulk_get(dev, WCD9335_MAX_SUPPLY, wcd->supplies);
-	if (ret) {
-		dev_err(dev, "Failed to get supplies: err = %d\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get supplies\n");
 
 	return 0;
 }
@@ -5109,7 +5048,6 @@ static int wcd9335_bring_up(struct wcd9335_codec *wcd)
 
 	if (byte0 == 0x1) {
 		dev_info(wcd->dev, "WCD9335 CODEC version is v2.0\n");
-		wcd->version = WCD9335_VERSION_2_0;
 		regmap_write(rm, WCD9335_CODEC_RPM_RST_CTL, 0x01);
 		regmap_write(rm, WCD9335_SIDO_SIDO_TEST_2, 0x00);
 		regmap_write(rm, WCD9335_SIDO_SIDO_CCL_8, 0x6F);
@@ -5161,10 +5099,8 @@ static int wcd9335_slim_probe(struct slim_device *slim)
 
 	wcd->dev = dev;
 	ret = wcd9335_parse_dt(wcd);
-	if (ret) {
-		dev_err(dev, "Error parsing DT: %d\n", ret);
+	if (ret)
 		return ret;
-	}
 
 	ret = wcd9335_power_on_reset(wcd);
 	if (ret)

sound/soc/codecs/wcd934x.c

@@ -475,17 +475,12 @@ enum {
 	INTn_2_INP_SEL_PROXIMITY,
 };
 
-enum {
-	INTERP_MAIN_PATH,
-	INTERP_MIX_PATH,
-};
-
 struct interp_sample_rate {
 	int sample_rate;
 	int rate_val;
 };
 
-static struct interp_sample_rate sr_val_tbl[] = {
+static const struct interp_sample_rate sr_val_tbl[] = {
 	{8000, 0x0},
 	{16000, 0x1},
 	{32000, 0x3},
@@ -527,7 +522,7 @@ static const struct regmap_range_cfg wcd934x_ifc_ranges[] = {
 	},
 };
 
-static struct regmap_config wcd934x_ifc_regmap_config = {
+static const struct regmap_config wcd934x_ifc_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 8,
 	.max_register = 0xffff,
@@ -571,10 +566,7 @@ struct wcd934x_codec {
 	struct mutex micb_lock;
 	u32 micb_ref[WCD934X_MAX_MICBIAS];
 	u32 pullup_ref[WCD934X_MAX_MICBIAS];
-	u32 micb1_mv;
 	u32 micb2_mv;
-	u32 micb3_mv;
-	u32 micb4_mv;
 };
 
 #define to_wcd934x_codec(_hw) container_of(_hw, struct wcd934x_codec, hw)
@@ -1217,7 +1209,7 @@ static const struct soc_enum cdc_if_tx13_mux_enum =
 	SOC_ENUM_SINGLE(WCD934X_DATA_HUB_SB_TX13_INP_CFG, 0,
 			ARRAY_SIZE(cdc_if_tx13_mux_text), cdc_if_tx13_mux_text);
 
-static struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
+static const struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
 	WCD_MBHC_FIELD(WCD_MBHC_L_DET_EN, WCD934X_ANA_MBHC_MECH, 0x80),
 	WCD_MBHC_FIELD(WCD_MBHC_GND_DET_EN, WCD934X_ANA_MBHC_MECH, 0x40),
 	WCD_MBHC_FIELD(WCD_MBHC_MECH_DETECTION_TYPE, WCD934X_ANA_MBHC_MECH, 0x20),
@@ -2208,7 +2200,8 @@ static int wcd934x_get_micbias_val(struct device *dev, const char *micbias,
 		mv = WCD934X_DEF_MICBIAS_MV;
 	}
 
-	*micb_mv = mv;
+	if (micb_mv)
+		*micb_mv = mv;
 
 	return (mv - 1000) / 50;
 }
@@ -2220,17 +2213,14 @@ static int wcd934x_init_dmic(struct snd_soc_component *comp)
 	u32 def_dmic_rate, dmic_clk_drv;
 
 	vout_ctl_1 = wcd934x_get_micbias_val(comp->dev,
-					     "qcom,micbias1-microvolt",
-					     &wcd->micb1_mv);
+					     "qcom,micbias1-microvolt", NULL);
 	vout_ctl_2 = wcd934x_get_micbias_val(comp->dev,
 					     "qcom,micbias2-microvolt",
 					     &wcd->micb2_mv);
 	vout_ctl_3 = wcd934x_get_micbias_val(comp->dev,
-					     "qcom,micbias3-microvolt",
-					     &wcd->micb3_mv);
+					     "qcom,micbias3-microvolt", NULL);
 	vout_ctl_4 = wcd934x_get_micbias_val(comp->dev,
-					     "qcom,micbias4-microvolt",
-					     &wcd->micb4_mv);
+					     "qcom,micbias4-microvolt", NULL);
 
 	snd_soc_component_update_bits(comp, WCD934X_ANA_MICB1,
 				      WCD934X_MICB_VAL_MASK, vout_ctl_1);
@@ -5866,17 +5856,13 @@ static int wcd934x_codec_parse_data(struct wcd934x_codec *wcd)
 	struct device_node *ifc_dev_np;
 
 	ifc_dev_np = of_parse_phandle(dev->of_node, "slim-ifc-dev", 0);
-	if (!ifc_dev_np) {
-		dev_err(dev, "No Interface device found\n");
-		return -EINVAL;
-	}
+	if (!ifc_dev_np)
+		return dev_err_probe(dev, -EINVAL, "No Interface device found\n");
 
 	wcd->sidev = of_slim_get_device(wcd->sdev->ctrl, ifc_dev_np);
 	of_node_put(ifc_dev_np);
-	if (!wcd->sidev) {
-		dev_err(dev, "Unable to get SLIM Interface device\n");
-		return -EINVAL;
-	}
+	if (!wcd->sidev)
+		return dev_err_probe(dev, -EINVAL, "Unable to get SLIM Interface device\n");
 
 	slim_get_logical_addr(wcd->sidev);
 	wcd->if_regmap = regmap_init_slimbus(wcd->sidev,
@@ -5922,10 +5908,8 @@ static int wcd934x_codec_probe(struct platform_device *pdev)
 	mutex_init(&wcd->micb_lock);
 
 	ret = wcd934x_codec_parse_data(wcd);
-	if (ret) {
-		dev_err(wcd->dev, "Failed to get SLIM IRQ\n");
+	if (ret)
 		return ret;
-	}
 
 	/* set default rate 9P6MHz */
 	regmap_update_bits(wcd->regmap, WCD934X_CODEC_RPM_CLK_MCLK_CFG,

sound/soc/codecs/wcd937x-sdw.c

@@ -19,7 +19,7 @@
 #include <sound/soc.h>
 #include "wcd937x.h"
 
-static struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
+static const struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_HPH_L, WCD937X_HPH_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_HPH_R, WCD937X_HPH_PORT, BIT(1)),
 	WCD_SDW_CH(WCD937X_CLSH, WCD937X_CLSH_PORT, BIT(0)),
@@ -30,7 +30,7 @@ static struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_DSD_R, WCD937X_DSD_PORT, BIT(1)),
 };
 
-static struct wcd937x_sdw_ch_info wcd937x_sdw_tx_ch_info[] = {
+static const struct wcd937x_sdw_ch_info wcd937x_sdw_tx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_ADC1, WCD937X_ADC_1_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_ADC2, WCD937X_ADC_2_3_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_ADC3, WCD937X_ADC_2_3_PORT, BIT(0)),

sound/soc/codecs/wcd937x.c

@@ -99,11 +99,9 @@ struct wcd937x_priv {
 	s32 pullup_ref[WCD937X_MAX_MICBIAS];
 	u32 hph_mode;
 	int ear_rx_path;
-	u32 chipid;
 	u32 micb1_mv;
 	u32 micb2_mv;
 	u32 micb3_mv;
-	u32 micb4_mv; /* 9375 only */
 	int hphr_pdm_wd_int;
 	int hphl_pdm_wd_int;
 	int aux_pdm_wd_int;
@@ -113,9 +111,6 @@ struct wcd937x_priv {
 	struct gpio_desc *us_euro_gpio;
 	struct gpio_desc *reset_gpio;
 
-	int dmic_0_1_clk_cnt;
-	int dmic_2_3_clk_cnt;
-	int dmic_4_5_clk_cnt;
 	atomic_t rx_clk_cnt;
 	atomic_t ana_clk_count;
 };
@@ -133,7 +128,7 @@ struct wcd937x_mbhc_zdet_param {
 	u16 btn7;
 };
 
-static struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
+static const struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
 	WCD_MBHC_FIELD(WCD_MBHC_L_DET_EN, WCD937X_ANA_MBHC_MECH, 0x80),
 	WCD_MBHC_FIELD(WCD_MBHC_GND_DET_EN, WCD937X_ANA_MBHC_MECH, 0x40),
 	WCD_MBHC_FIELD(WCD_MBHC_MECH_DETECTION_TYPE, WCD937X_ANA_MBHC_MECH, 0x20),
@@ -227,7 +222,7 @@ static const u32 wcd937x_config_regs[] = {
 	WCD937X_DIGITAL_INTR_LEVEL_0,
 };
 
-static struct regmap_irq_chip wcd937x_regmap_irq_chip = {
+static const struct regmap_irq_chip wcd937x_regmap_irq_chip = {
 	.name = "wcd937x",
 	.irqs = wcd937x_irqs,
 	.num_irqs = ARRAY_SIZE(wcd937x_irqs),
@@ -1244,7 +1239,7 @@ static int wcd937x_codec_enable_micbias_pullup(struct snd_soc_dapm_widget *w,
 static int wcd937x_connect_port(struct wcd937x_sdw_priv *wcd, u8 port_idx, u8 ch_id, bool enable)
 {
 	struct sdw_port_config *port_config = &wcd->port_config[port_idx - 1];
-	struct wcd937x_sdw_ch_info *ch_info = &wcd->ch_info[ch_id];
+	const struct wcd937x_sdw_ch_info *ch_info = &wcd->ch_info[ch_id];
 	u8 port_num = ch_info->port_num;
 	u8 ch_mask = ch_info->ch_mask;
 
@@ -2503,7 +2498,7 @@ static irqreturn_t wcd937x_wd_handle_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static struct irq_chip wcd_irq_chip = {
+static const struct irq_chip wcd_irq_chip = {
 	.name = "WCD937x",
 };
 
@@ -2543,6 +2538,7 @@ static int wcd937x_soc_codec_probe(struct snd_soc_component *component)
 	struct device *dev = component->dev;
 	unsigned long time_left;
 	int i, ret;
+	u32 chipid;
 
 	time_left = wait_for_completion_timeout(&tx_sdw_dev->initialization_complete,
 						msecs_to_jiffies(5000));
@@ -2556,11 +2552,10 @@ static int wcd937x_soc_codec_probe(struct snd_soc_component *component)
 	if (ret < 0)
 		return ret;
 
-	wcd937x->chipid = (snd_soc_component_read(component,
-				WCD937X_DIGITAL_EFUSE_REG_0) & 0x1e) >> 1;
-	if (wcd937x->chipid != CHIPID_WCD9370 &&
-	    wcd937x->chipid != CHIPID_WCD9375) {
-		dev_err(dev, "Got unknown chip id: 0x%x\n", wcd937x->chipid);
+	chipid = (snd_soc_component_read(component,
+					 WCD937X_DIGITAL_EFUSE_REG_0) & 0x1e) >> 1;
+	if (chipid != CHIPID_WCD9370 && chipid != CHIPID_WCD9375) {
+		dev_err(dev, "Got unknown chip id: 0x%x\n", chipid);
 		pm_runtime_put(dev);
 		return -EINVAL;
 	}
@@ -2609,7 +2604,7 @@ static int wcd937x_soc_codec_probe(struct snd_soc_component *component)
 	disable_irq_nosync(wcd937x->hphl_pdm_wd_int);
 	disable_irq_nosync(wcd937x->aux_pdm_wd_int);
 
-	if (wcd937x->chipid == CHIPID_WCD9375) {
+	if (chipid == CHIPID_WCD9375) {
 		ret = snd_soc_dapm_new_controls(dapm, wcd9375_dapm_widgets,
 						ARRAY_SIZE(wcd9375_dapm_widgets));
 		if (ret < 0) {

sound/soc/codecs/wcd937x.h

@@ -488,23 +488,6 @@
 #define WCD937X_MAX_SWR_PORTS			5
 #define WCD937X_MAX_SWR_CH_IDS			15
 
-/* Convert from vout ctl to micbias voltage in mV */
-#define WCD_VOUT_CTL_TO_MICB(v)	(1000 + (v) * 50)
-#define MAX_PORT 8
-#define MAX_CH_PER_PORT 8
-#define MAX_TX_PWR_CH 2
-#define SWR_NUM_PORTS 4
-
-#define WCD937X_MAX_SLAVE_PORT_TYPES 10
-
-struct codec_port_info {
-	u32 slave_port_type;
-	u32 master_port_type;
-	u32 ch_mask;
-	u32 num_ch;
-	u32 ch_rate;
-};
-
 struct wcd937x_sdw_ch_info {
 	int port_num;
 	unsigned int ch_mask;
@@ -522,10 +505,9 @@ struct wcd937x_sdw_priv {
 	struct sdw_stream_config sconfig;
 	struct sdw_stream_runtime *sruntime;
 	struct sdw_port_config port_config[WCD937X_MAX_SWR_PORTS];
-	struct wcd937x_sdw_ch_info *ch_info;
+	const struct wcd937x_sdw_ch_info *ch_info;
 	bool port_enable[WCD937X_MAX_SWR_CH_IDS];
 	int active_ports;
-	int num_ports;
 	bool is_tx;
 	struct wcd937x_priv *wcd937x;
 	struct irq_domain *slave_irq;
@@ -570,12 +552,6 @@ int wcd937x_sdw_hw_params(struct wcd937x_sdw_priv *wcd,
 }
 #endif
 
-enum {
-	WCD_RX1,
-	WCD_RX2,
-	WCD_RX3
-};
-
 enum {
 	/* INTR_CTRL_INT_MASK_0 */
 	WCD937X_IRQ_MBHC_BUTTON_PRESS_DET = 0,
@@ -645,9 +621,4 @@ enum wcd937x_rx_sdw_channels {
 	WCD937X_DSD_L,
 };
 
-enum {
-	WCD937X_SDW_DIR_RX,
-	WCD937X_SDW_DIR_TX,
-};
-
 #endif

sound/soc/codecs/wcd938x-sdw.c

@@ -21,7 +21,7 @@
 
 #define SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(m) (0xE0 + 0x10 * (m))
 
-static struct wcd938x_sdw_ch_info wcd938x_sdw_rx_ch_info[] = {
+static const struct wcd938x_sdw_ch_info wcd938x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD938X_HPH_L, WCD938X_HPH_PORT, BIT(0)),
 	WCD_SDW_CH(WCD938X_HPH_R, WCD938X_HPH_PORT, BIT(1)),
 	WCD_SDW_CH(WCD938X_CLSH, WCD938X_CLSH_PORT, BIT(0)),
@@ -32,7 +32,7 @@ static struct wcd938x_sdw_ch_info wcd938x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD938X_DSD_R, WCD938X_DSD_PORT, BIT(1)),
 };
 
-static struct wcd938x_sdw_ch_info wcd938x_sdw_tx_ch_info[] = {
+static const struct wcd938x_sdw_ch_info wcd938x_sdw_tx_ch_info[] = {
 	WCD_SDW_CH(WCD938X_ADC1, WCD938X_ADC_1_2_PORT, BIT(0)),
 	WCD_SDW_CH(WCD938X_ADC2, WCD938X_ADC_1_2_PORT, BIT(1)),
 	WCD_SDW_CH(WCD938X_ADC3, WCD938X_ADC_3_4_PORT, BIT(0)),

sound/soc/codecs/wcd938x.c

@@ -221,7 +221,7 @@ struct wcd938x_mbhc_zdet_param {
 	u16 btn7;
 };
 
-static struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
+static const struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
 	WCD_MBHC_FIELD(WCD_MBHC_L_DET_EN, WCD938X_ANA_MBHC_MECH, 0x80),
 	WCD_MBHC_FIELD(WCD_MBHC_GND_DET_EN, WCD938X_ANA_MBHC_MECH, 0x40),
 	WCD_MBHC_FIELD(WCD_MBHC_MECH_DETECTION_TYPE, WCD938X_ANA_MBHC_MECH, 0x20),
@@ -418,7 +418,7 @@ static int wcd938x_io_init(struct wcd938x_priv *wcd938x)
 
 }
 
-static int wcd938x_sdw_connect_port(struct wcd938x_sdw_ch_info *ch_info,
+static int wcd938x_sdw_connect_port(const struct wcd938x_sdw_ch_info *ch_info,
 				    struct sdw_port_config *port_config,
 				    u8 enable)
 {
@@ -3027,7 +3027,7 @@ static irqreturn_t wcd938x_wd_handle_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static struct irq_chip wcd_irq_chip = {
+static const struct irq_chip wcd_irq_chip = {
 	.name = "WCD938x",
 };
 

sound/soc/codecs/wcd938x.h

@@ -642,10 +642,6 @@ enum wcd938x_rx_sdw_channels {
 	WCD938X_DSD_R,
 	WCD938X_DSD_L,
 };
-enum {
-	WCD938X_SDW_DIR_RX,
-	WCD938X_SDW_DIR_TX,
-};
 
 struct wcd938x_priv;
 struct wcd938x_sdw_priv {
@@ -653,10 +649,9 @@ struct wcd938x_sdw_priv {
 	struct sdw_stream_config sconfig;
 	struct sdw_stream_runtime *sruntime;
 	struct sdw_port_config port_config[WCD938X_MAX_SWR_PORTS];
-	struct wcd938x_sdw_ch_info *ch_info;
+	const struct wcd938x_sdw_ch_info *ch_info;
 	bool port_enable[WCD938X_MAX_SWR_CH_IDS];
 	int active_ports;
-	int num_ports;
 	bool is_tx;
 	struct wcd938x_priv *wcd938x;
 	struct irq_domain *slave_irq;

sound/soc/codecs/wcd939x-sdw.c

@@ -23,7 +23,7 @@
 
 #define SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(m) (0xE0 + 0x10 * (m))
 
-static struct wcd939x_sdw_ch_info wcd939x_sdw_rx_ch_info[] = {
+static const struct wcd939x_sdw_ch_info wcd939x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD939X_HPH_L, WCD939X_HPH_PORT, BIT(0)),
 	WCD_SDW_CH(WCD939X_HPH_R, WCD939X_HPH_PORT, BIT(1)),
 	WCD_SDW_CH(WCD939X_CLSH, WCD939X_CLSH_PORT, BIT(0)),
@@ -36,7 +36,7 @@ static struct wcd939x_sdw_ch_info wcd939x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD939X_HIFI_PCM_R, WCD939X_HIFI_PCM_PORT, BIT(1)),
 };
 
-static struct wcd939x_sdw_ch_info wcd939x_sdw_tx_ch_info[] = {
+static const struct wcd939x_sdw_ch_info wcd939x_sdw_tx_ch_info[] = {
 	WCD_SDW_CH(WCD939X_ADC1, WCD939X_ADC_1_4_PORT, BIT(0)),
 	WCD_SDW_CH(WCD939X_ADC2, WCD939X_ADC_1_4_PORT, BIT(1)),
 	WCD_SDW_CH(WCD939X_ADC3, WCD939X_ADC_1_4_PORT, BIT(2)),

sound/soc/codecs/wcd939x.c

@@ -220,7 +220,7 @@ static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(ear_pa_gain, 600, -1800);
 static const DECLARE_TLV_DB_SCALE(line_gain, 0, 7, 1);
 static const DECLARE_TLV_DB_SCALE(analog_gain, 0, 25, 1);
 
-static struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
+static const struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = {
 	WCD_MBHC_FIELD(WCD_MBHC_L_DET_EN, WCD939X_ANA_MBHC_MECH, 0x80),
 	WCD_MBHC_FIELD(WCD_MBHC_GND_DET_EN, WCD939X_ANA_MBHC_MECH, 0x40),
 	WCD_MBHC_FIELD(WCD_MBHC_MECH_DETECTION_TYPE, WCD939X_ANA_MBHC_MECH, 0x20),
@@ -291,7 +291,7 @@ static const struct regmap_irq wcd939x_irqs[WCD939X_NUM_IRQS] = {
 	REGMAP_IRQ_REG(WCD939X_IRQ_HPHR_SURGE_DET_INT, 2, 0x08),
 };
 
-static struct regmap_irq_chip wcd939x_regmap_irq_chip = {
+static const struct regmap_irq_chip wcd939x_regmap_irq_chip = {
 	.name = "wcd939x",
 	.irqs = wcd939x_irqs,
 	.num_irqs = ARRAY_SIZE(wcd939x_irqs),
@@ -414,7 +414,7 @@ static int wcd939x_io_init(struct snd_soc_component *component)
 	return 0;
 }
 
-static int wcd939x_sdw_connect_port(struct wcd939x_sdw_ch_info *ch_info,
+static int wcd939x_sdw_connect_port(const struct wcd939x_sdw_ch_info *ch_info,
 				    struct sdw_port_config *port_config,
 				    u8 enable)
 {
@@ -2957,7 +2957,7 @@ static irqreturn_t wcd939x_wd_handle_irq(int irq, void *data)
  *     \- regmap_irq_thread()
  *         \- handle_nested_irq(i)
  */
-static struct irq_chip wcd_irq_chip = {
+static const struct irq_chip wcd_irq_chip = {
 	.name = "WCD939x",
 };
 

sound/soc/codecs/wcd939x.h

@@ -903,21 +903,15 @@ enum wcd939x_rx_sdw_channels {
 	WCD939X_HIFI_PCM_R,
 };
 
-enum {
-	WCD939X_SDW_DIR_RX,
-	WCD939X_SDW_DIR_TX,
-};
-
 struct wcd939x_priv;
 struct wcd939x_sdw_priv {
 	struct sdw_slave *sdev;
 	struct sdw_stream_config sconfig;
 	struct sdw_stream_runtime *sruntime;
 	struct sdw_port_config port_config[WCD939X_MAX_SWR_PORTS];
-	struct wcd939x_sdw_ch_info *ch_info;
+	const struct wcd939x_sdw_ch_info *ch_info;
 	bool port_enable[WCD939X_MAX_SWR_CH_IDS];
 	int active_ports;
-	int num_ports;
 	bool is_tx;
 	struct wcd939x_priv *wcd939x;
 	struct irq_domain *slave_irq;