ASoC: cs35l45: Support for GPIO pins configuration.

Adds device tree configuration for cs35l45 GPIOs

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230315154722.3911463-1-vkarpovi@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

3 files changed, 95 insertions, 2 deletions

diff --git a/sound/soc/codecs/cs35l45-tables.c b/sound/soc/codecs/cs35l45-tables.c
index 4b1320a2e6e9..997ea418a6dc 100644
--- a/sound/soc/codecs/cs35l45-tables.c
+++ b/sound/soc/codecs/cs35l45-tables.c
@@ -43,6 +43,9 @@ EXPORT_SYMBOL_NS_GPL(cs35l45_apply_patch, SND_SOC_CS35L45);
 static const struct reg_default cs35l45_defaults[] = {
 	{ CS35L45_BLOCK_ENABLES,		0x00003323 },
 	{ CS35L45_BLOCK_ENABLES2,		0x00000010 },
+	{ CS35L45_SYNC_GPIO1,			0x00000007 },
+	{ CS35L45_INTB_GPIO2_MCLK_REF,		0x00000005 },
+	{ CS35L45_GPIO3,			0x00000005 },
 	{ CS35L45_REFCLK_INPUT,			0x00000510 },
 	{ CS35L45_GLOBAL_SAMPLE_RATE,		0x00000003 },
 	{ CS35L45_ASP_ENABLES1,			0x00000000 },
@@ -61,6 +64,9 @@ static const struct reg_default cs35l45_defaults[] = {
 	{ CS35L45_ASPTX4_INPUT,			0x00000028 },
 	{ CS35L45_ASPTX5_INPUT,			0x00000048 },
 	{ CS35L45_AMP_PCM_CONTROL,		0x00100000 },
+	{ CS35L45_GPIO1_CTRL1,			0x81000001 },
+	{ CS35L45_GPIO2_CTRL1,			0x81000001 },
+	{ CS35L45_GPIO3_CTRL1,			0x81000001 },
 };
 
 static bool cs35l45_readable_reg(struct device *dev, unsigned int reg)
@@ -72,6 +78,9 @@ static bool cs35l45_readable_reg(struct device *dev, unsigned int reg)
 	case CS35L45_BLOCK_ENABLES:
 	case CS35L45_BLOCK_ENABLES2:
 	case CS35L45_ERROR_RELEASE:
+	case CS35L45_SYNC_GPIO1:
+	case CS35L45_INTB_GPIO2_MCLK_REF:
+	case CS35L45_GPIO3:
 	case CS35L45_REFCLK_INPUT:
 	case CS35L45_GLOBAL_SAMPLE_RATE:
 	case CS35L45_ASP_ENABLES1:
@@ -92,6 +101,10 @@ static bool cs35l45_readable_reg(struct device *dev, unsigned int reg)
 	case CS35L45_AMP_PCM_CONTROL:
 	case CS35L45_AMP_PCM_HPF_TST:
 	case CS35L45_IRQ1_EINT_4:
+	case CS35L45_GPIO_STATUS1:
+	case CS35L45_GPIO1_CTRL1:
+	case CS35L45_GPIO2_CTRL1:
+	case CS35L45_GPIO3_CTRL1:
 		return true;
 	default:
 		return false;
@@ -107,6 +120,7 @@ static bool cs35l45_volatile_reg(struct device *dev, unsigned int reg)
 	case CS35L45_ERROR_RELEASE:
 	case CS35L45_AMP_PCM_HPF_TST:	/* not cachable */
 	case CS35L45_IRQ1_EINT_4:
+	case CS35L45_GPIO_STATUS1:
 		return true;
 	default:
 		return false;
diff --git a/sound/soc/codecs/cs35l45.c b/sound/soc/codecs/cs35l45.c
index 855d9f13e6ff..c87dccb3382e 100644
--- a/sound/soc/codecs/cs35l45.c
+++ b/sound/soc/codecs/cs35l45.c
@@ -536,7 +536,63 @@ static int __maybe_unused cs35l45_runtime_resume(struct device *dev)
 
 static int cs35l45_apply_property_config(struct cs35l45_private *cs35l45)
 {
+	struct device_node *node = cs35l45->dev->of_node;
+	unsigned int gpio_regs[] = {CS35L45_GPIO1_CTRL1, CS35L45_GPIO2_CTRL1,
+				    CS35L45_GPIO3_CTRL1};
+	unsigned int pad_regs[] = {CS35L45_SYNC_GPIO1,
+				   CS35L45_INTB_GPIO2_MCLK_REF, CS35L45_GPIO3};
+	struct device_node *child;
 	unsigned int val;
+	char of_name[32];
+	int ret, i;
+
+	if (!node)
+		return 0;
+
+	for (i = 0; i < CS35L45_NUM_GPIOS; i++) {
+		sprintf(of_name, "cirrus,gpio-ctrl%d", i + 1);
+		child = of_get_child_by_name(node, of_name);
+		if (!child)
+			continue;
+
+		ret = of_property_read_u32(child, "gpio-dir", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, gpio_regs[i],
+					   CS35L45_GPIO_DIR_MASK,
+					   val << CS35L45_GPIO_DIR_SHIFT);
+
+		ret = of_property_read_u32(child, "gpio-lvl", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, gpio_regs[i],
+					   CS35L45_GPIO_LVL_MASK,
+					   val << CS35L45_GPIO_LVL_SHIFT);
+
+		ret = of_property_read_u32(child, "gpio-op-cfg", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, gpio_regs[i],
+					   CS35L45_GPIO_OP_CFG_MASK,
+					   val << CS35L45_GPIO_OP_CFG_SHIFT);
+
+		ret = of_property_read_u32(child, "gpio-pol", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, gpio_regs[i],
+					   CS35L45_GPIO_POL_MASK,
+					   val << CS35L45_GPIO_POL_SHIFT);
+
+		ret = of_property_read_u32(child, "gpio-ctrl", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, pad_regs[i],
+					   CS35L45_GPIO_CTRL_MASK,
+					   val << CS35L45_GPIO_CTRL_SHIFT);
+
+		ret = of_property_read_u32(child, "gpio-invert", &val);
+		if (!ret)
+			regmap_update_bits(cs35l45->regmap, pad_regs[i],
+					   CS35L45_GPIO_INVERT_MASK,
+					   val << CS35L45_GPIO_INVERT_SHIFT);
+
+		of_node_put(child);
+	}
 
 	if (device_property_read_u32(cs35l45->dev,
 				     "cirrus,asp-sdout-hiz-ctrl", &val) == 0) {
diff --git a/sound/soc/codecs/cs35l45.h b/sound/soc/codecs/cs35l45.h
index 53fe9d2b7b15..f3a54fc57d53 100644
--- a/sound/soc/codecs/cs35l45.h
+++ b/sound/soc/codecs/cs35l45.h
@@ -14,6 +14,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
+#include <dt-bindings/sound/cs35l45.h>
 
 #define CS35L45_DEVID				0x00000000
 #define CS35L45_REVID				0x00000004
@@ -24,6 +25,9 @@
 #define CS35L45_BLOCK_ENABLES			0x00002018
 #define CS35L45_BLOCK_ENABLES2			0x0000201C
 #define CS35L45_ERROR_RELEASE			0x00002034
+#define CS35L45_SYNC_GPIO1			0x00002430
+#define CS35L45_INTB_GPIO2_MCLK_REF		0x00002434
+#define CS35L45_GPIO3				0x00002438
 #define CS35L45_REFCLK_INPUT			0x00002C04
 #define CS35L45_GLOBAL_SAMPLE_RATE		0x00002C0C
 #define CS35L45_BOOST_CCM_CFG			0x00003808
@@ -48,8 +52,11 @@
 #define CS35L45_AMP_PCM_CONTROL			0x00007000
 #define CS35L45_AMP_PCM_HPF_TST			0x00007004
 #define CS35L45_IRQ1_EINT_4			0x0000E01C
-#define CS35L45_LASTREG				0x0000E01C
-
+#define CS35L45_GPIO_STATUS1			0x0000F000
+#define CS35L45_GPIO1_CTRL1			0x0000F008
+#define CS35L45_GPIO2_CTRL1			0x0000F00C
+#define CS35L45_GPIO3_CTRL1			0x0000F010
+#define CS35L45_LASTREG			0x0000F010
 /* SFT_RESET */
 #define CS35L45_SOFT_RESET_TRIGGER		0x5A000000
 
@@ -165,6 +172,22 @@
 #define CS35L45_OTP_BOOT_DONE_STS_MASK		BIT(1)
 #define CS35L45_OTP_BUSY_MASK			BIT(0)
 
+/* GPIOX_CTRL1 */
+#define CS35L45_GPIO_DIR_SHIFT			31
+#define CS35L45_GPIO_DIR_MASK			BIT(31)
+#define CS35L45_GPIO_LVL_SHIFT			15
+#define CS35L45_GPIO_LVL_MASK			BIT(15)
+#define CS35L45_GPIO_OP_CFG_SHIFT		14
+#define CS35L45_GPIO_OP_CFG_MASK		BIT(14)
+#define CS35L45_GPIO_POL_SHIFT			12
+#define CS35L45_GPIO_POL_MASK			BIT(12)
+
+/* SYNC_GPIO1, INTB_GPIO2_MCLK_REF, GPIO3 */
+#define CS35L45_GPIO_CTRL_SHIFT		20
+#define CS35L45_GPIO_CTRL_MASK			GENMASK(22, 20)
+#define CS35L45_GPIO_INVERT_SHIFT		19
+#define CS35L45_GPIO_INVERT_MASK		BIT(19)
+
 /* Mixer sources */
 #define CS35L45_PCM_SRC_MASK			0x7F
 #define CS35L45_PCM_SRC_ZERO			0x00