[PATCH 1/3] pinctrl: qcom: Add SM8550 pinctrl driver

[Neil Armstrong]

Add pinctrl driver for the TLMM block found in the SM8550 SoC.

This driver only handles the gpio and qup1_se7 pinmux, and makes sure
the pinconf applies on SDC2 pins.

Signed-off-by: Neil Armstrong <neil.armstrong at linaro.org>
---
 drivers/pinctrl/qcom/Kconfig          |  7 ++++
 drivers/pinctrl/qcom/Makefile         |  1 +
 drivers/pinctrl/qcom/pinctrl-sm8550.c | 75 +++++++++++++++++++++++++++++++++++
 3 files changed, 83 insertions(+)

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index 2fe63981478..f760bbcdd52 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -41,6 +41,13 @@ config PINCTRL_QCOM_SDM845
 	  Say Y here to enable support for pinctrl on the Snapdragon 845 SoC,
 	  as well as the associated GPIO driver.
 
+config PINCTRL_QCOM_SM8550
+	bool "Qualcomm SM8550 GCC"
+	select PINCTRL_QCOM
+	help
+	  Say Y here to enable support for pinctrl on the Snapdragon SM8550 SoC,
+	  as well as the associated GPIO driver.
+
 endmenu
 
 endif
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 6d9aca6d7b7..970902e28c8 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_PINCTRL_QCOM_IPQ4019) += pinctrl-ipq4019.o
 obj-$(CONFIG_PINCTRL_QCOM_APQ8096) += pinctrl-apq8096.o
 obj-$(CONFIG_PINCTRL_QCOM_QCS404) += pinctrl-qcs404.o
 obj-$(CONFIG_PINCTRL_QCOM_SDM845) += pinctrl-sdm845.o
+obj-$(CONFIG_PINCTRL_QCOM_SM8550) += pinctrl-sm8550.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sm8550.c b/drivers/pinctrl/qcom/pinctrl-sm8550.c
new file mode 100644
index 00000000000..d9a8a652111
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sm8550.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Qualcomm sm8550 pinctrl
+ *
+ * (C) Copyright 2024 Linaro Ltd.
+ *
+ */
+
+#include <common.h>
+#include <dm.h>
+
+#include "pinctrl-qcom.h"
+
+#define MAX_PIN_NAME_LEN 32
+static char pin_name[MAX_PIN_NAME_LEN] __section(".data");
+
+static const struct pinctrl_function msm_pinctrl_functions[] = {
+	{"qup1_se7", 1},
+	{"gpio", 0},
+};
+
+static const char *sm8550_get_function_name(struct udevice *dev,
+						 unsigned int selector)
+{
+	return msm_pinctrl_functions[selector].name;
+}
+
+static const char *sm8550_get_pin_name(struct udevice *dev,
+					unsigned int selector)
+{
+	static const char *special_pins_names[] = {
+		"ufs_reset",
+		"sdc2_clk",
+		"sdc2_cmd",
+		"sdc2_data",
+	};
+
+	if (selector >= 210 && selector <= 213)
+		snprintf(pin_name, MAX_PIN_NAME_LEN, special_pins_names[selector - 210]);
+	else
+		snprintf(pin_name, MAX_PIN_NAME_LEN, "gpio%u", selector);
+
+	return pin_name;
+}
+
+static unsigned int sm8550_get_function_mux(__maybe_unused unsigned int pin,
+					    unsigned int selector)
+{
+	return msm_pinctrl_functions[selector].val;
+}
+
+static struct msm_pinctrl_data sm8550_data = {
+	.pin_data = {
+		.pin_count = 214,
+		.special_pins_start = 210,
+	},
+	.functions_count = ARRAY_SIZE(msm_pinctrl_functions),
+	.get_function_name = sm8550_get_function_name,
+	.get_function_mux = sm8550_get_function_mux,
+	.get_pin_name = sm8550_get_pin_name,
+};
+
+static const struct udevice_id msm_pinctrl_ids[] = {
+	{ .compatible = "qcom,sm8550-tlmm", .data = (ulong)&sm8550_data },
+	{ /* Sentinel */ }
+};
+
+U_BOOT_DRIVER(pinctrl_sm8550) = {
+	.name		= "pinctrl_sm8550",
+	.id		= UCLASS_NOP,
+	.of_match	= msm_pinctrl_ids,
+	.ops		= &msm_pinctrl_ops,
+	.bind		= msm_pinctrl_bind,
+};
+

-- 
2.34.1