[PATCH v1 2/2] pinctrl: qcom: Add qcs615 lpass lpi pinctrl driver

[Karthik S]

Add pinctrl driver to support pin configuration for LPASS
(Low Power Audio SubSystem) LPI (Low Power Island) pinctrl
on QCS615.

This IP is an additional pin control block for Audio Pins on top the
existing SoC Top level pin-controller.

This pin controller has some similarities compared to Top level
msm SoC Pin controller like 'each pin belongs to a single group'
and so on. However this one is intended to control only audio
pins in particular, which can not be configured/touched by the
Top level SoC pin controller except setting them as gpios.

Signed-off-by: Karthik S <karthik.s@xxxxxxxxxxxxxxxx>
---
 arch/arm64/configs/defconfig                  |   1 +
 drivers/pinctrl/qcom/Kconfig                  |  10 +
 drivers/pinctrl/qcom/Makefile                 |   1 +
 .../pinctrl/qcom/pinctrl-qcs615-lpass-lpi.c   | 185 ++++++++++++++++++
 4 files changed, 197 insertions(+)
 create mode 100644 drivers/pinctrl/qcom/pinctrl-qcs615-lpass-lpi.c

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 6ec8d3a69c98..80423678fe25 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -700,6 +700,7 @@ CONFIG_PINCTRL_IMX_SCMI=y
 CONFIG_PINCTRL_IMX91=y
 CONFIG_PINCTRL_QCOM_SPMI_PMIC=y
 CONFIG_PINCTRL_LPASS_LPI=m
+CONFIG_PINCTRL_QCS615_LPASS_LPI=m
 CONFIG_PINCTRL_MILOS_LPASS_LPI=m
 CONFIG_PINCTRL_SC7280_LPASS_LPI=m
 CONFIG_PINCTRL_SM6115_LPASS_LPI=m
diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index 18db350222b9..9cef5fccae3f 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -62,6 +62,16 @@ config PINCTRL_LPASS_LPI
 	  Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
 	  (Low Power Island) found on the Qualcomm Technologies Inc SoCs.
 
+config PINCTRL_QCS615_LPASS_LPI
+       tristate "Qualcomm Technologies Inc QCS615 LPASS LPI pin controller driver"
+       depends on ARM64 || COMPILE_TEST
+       depends on PINCTRL_LPASS_LPI
+       help
+         This is the pinctrl, pinmux, pinconf and gpiolib driver for the
+         Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
+         (Low Power Island) found on the Qualcomm Technologies Inc QCS615
+         platform.
+
 config PINCTRL_MILOS_LPASS_LPI
 	tristate "Qualcomm Milos LPASS LPI pin controller driver"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 43ecd246afe8..de2c9bdfbad2 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_PINCTRL_MSM8998)   += pinctrl-msm8998.o
 obj-$(CONFIG_PINCTRL_QCM2290)	+= pinctrl-qcm2290.o
 obj-$(CONFIG_PINCTRL_QCS404)	+= pinctrl-qcs404.o
 obj-$(CONFIG_PINCTRL_QCS615)    += pinctrl-qcs615.o
+obj-$(CONFIG_PINCTRL_QCS615_LPASS_LPI) += pinctrl-qcs615-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_QCS8300)	+= pinctrl-qcs8300.o
 obj-$(CONFIG_PINCTRL_QDF2XXX)	+= pinctrl-qdf2xxx.o
 obj-$(CONFIG_PINCTRL_MDM9607)	+= pinctrl-mdm9607.o
diff --git a/drivers/pinctrl/qcom/pinctrl-qcs615-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-qcs615-lpass-lpi.c
new file mode 100644
index 000000000000..78c8e7670c38
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-qcs615-lpass-lpi.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ * ALSA SoC platform-machine driver for QTi LPASS
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_clock.h>
+#include <linux/pm_runtime.h>
+
+#include "pinctrl-lpass-lpi.h"
+
+enum lpass_lpi_functions {
+	LPI_MUX_i2s1_clk,
+	LPI_MUX_i2s1_ws,
+	LPI_MUX_i2s1_data,
+	LPI_MUX_spkr_i2s_mclk_a,
+	LPI_MUX_dmic1_clk,
+	LPI_MUX_dmic1_data,
+	LPI_MUX_dmic2_clk,
+	LPI_MUX_dmic2_data,
+	LPI_MUX_gpio,
+	LPI_MUX__,
+};
+
+static int gpio8_pins[] = { 8 };
+static int gpio9_pins[] = { 9 };
+static int gpio10_pins[] = { 10 };
+static int gpio11_pins[] = { 11 };
+static int gpio19_pins[] = { 19 };
+static int gpio26_pins[] = { 26 };
+static int gpio27_pins[] = { 27 };
+static int gpio28_pins[] = { 28 };
+static int gpio29_pins[] = { 29 };
+static int gpio0_pins[] = { 0 };
+static int gpio1_pins[] = { 1 };
+static int gpio2_pins[] = { 2 };
+static int gpio3_pins[] = { 3 };
+static int gpio4_pins[] = { 4 };
+static int gpio5_pins[] = { 5 };
+static int gpio6_pins[] = { 6 };
+static int gpio7_pins[] = { 7 };
+static int gpio12_pins[] = { 12 };
+static int gpio13_pins[] = { 13 };
+static int gpio14_pins[] = { 14 };
+static int gpio15_pins[] = { 15 };
+static int gpio16_pins[] = { 16 };
+static int gpio17_pins[] = { 17 };
+static int gpio18_pins[] = { 18 };
+static int gpio20_pins[] = { 20 };
+static int gpio21_pins[] = { 21 };
+static int gpio22_pins[] = { 22 };
+static int gpio23_pins[] = { 23 };
+static int gpio24_pins[] = { 24 };
+static int gpio25_pins[] = { 25 };
+static int gpio30_pins[] = { 30 };
+static int gpio31_pins[] = { 31 };
+
+static const struct pinctrl_pin_desc qcs615_lpi_pins[] = {
+	PINCTRL_PIN(0,  "gpio0"),
+	PINCTRL_PIN(1,  "gpio1"),
+	PINCTRL_PIN(2,  "gpio2"),
+	PINCTRL_PIN(3,  "gpio3"),
+	PINCTRL_PIN(4,  "gpio4"),
+	PINCTRL_PIN(5,  "gpio5"),
+	PINCTRL_PIN(6,  "gpio6"),
+	PINCTRL_PIN(7,  "gpio7"),
+	PINCTRL_PIN(8,  "gpio8"),
+	PINCTRL_PIN(9,  "gpio9"),
+	PINCTRL_PIN(10, "gpio10"),
+	PINCTRL_PIN(11, "gpio11"),
+	PINCTRL_PIN(12, "gpio12"),
+	PINCTRL_PIN(13, "gpio13"),
+	PINCTRL_PIN(14, "gpio14"),
+	PINCTRL_PIN(15, "gpio15"),
+	PINCTRL_PIN(16, "gpio16"),
+	PINCTRL_PIN(17, "gpio17"),
+	PINCTRL_PIN(18, "gpio18"),
+	PINCTRL_PIN(19, "gpio19"),
+	PINCTRL_PIN(20, "gpio20"),
+	PINCTRL_PIN(21, "gpio21"),
+	PINCTRL_PIN(22, "gpio22"),
+	PINCTRL_PIN(23, "gpio23"),
+	PINCTRL_PIN(24, "gpio24"),
+	PINCTRL_PIN(25, "gpio25"),
+	PINCTRL_PIN(26, "gpio26"),
+	PINCTRL_PIN(27, "gpio27"),
+	PINCTRL_PIN(28, "gpio28"),
+	PINCTRL_PIN(29, "gpio29"),
+	PINCTRL_PIN(30, "gpio30"),
+	PINCTRL_PIN(31, "gpio31"),
+};
+
+static const char * const i2s1_clk_groups[] = { "gpio8" };
+static const char * const i2s1_ws_groups[] = { "gpio9" };
+static const char * const i2s1_data_groups[] = { "gpio10", "gpio11" };
+static const char * const spkr_i2s_mclk_a_groups[] = { "gpio19" };
+static const char * const dmic1_clk_groups[] = { "gpio26" };
+static const char * const dmic1_data_groups[] = { "gpio27" };
+static const char * const dmic2_clk_groups[] = { "gpio28" };
+static const char * const dmic2_data_groups[] = { "gpio29" };
+
+static const struct lpi_pingroup qcs615_groups[] = {
+	LPI_PINGROUP(0,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(1,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(2,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(3,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(4,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(5,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(6,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(7,  LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(8,  LPI_NO_SLEW, _, _, i2s1_clk, _),
+	LPI_PINGROUP(9,  LPI_NO_SLEW, _, _, i2s1_ws, _),
+	LPI_PINGROUP(10, LPI_NO_SLEW, _, _, _, i2s1_data),
+	LPI_PINGROUP(11, LPI_NO_SLEW, _, i2s1_data, _, _),
+	LPI_PINGROUP(12, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(13, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(14, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(15, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(16, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(17, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(18, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(19, LPI_NO_SLEW, spkr_i2s_mclk_a, _, _, _),
+	LPI_PINGROUP(20, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(21, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(22, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(23, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(24, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(25, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(26, LPI_NO_SLEW, dmic1_clk, _, _, _),
+	LPI_PINGROUP(27, LPI_NO_SLEW, dmic1_data, _, _, _),
+	LPI_PINGROUP(28, LPI_NO_SLEW, dmic2_clk, _, _, _),
+	LPI_PINGROUP(29, LPI_NO_SLEW, dmic2_data, _, _, _),
+	LPI_PINGROUP(30, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(31, LPI_NO_SLEW, _, _, _, _),
+};
+
+static const struct lpi_function qcs615_functions[] = {
+	LPI_FUNCTION(i2s1_clk),
+	LPI_FUNCTION(i2s1_ws),
+	LPI_FUNCTION(i2s1_data),
+	LPI_FUNCTION(spkr_i2s_mclk_a),
+	LPI_FUNCTION(dmic1_clk),
+	LPI_FUNCTION(dmic1_data),
+	LPI_FUNCTION(dmic2_clk),
+	LPI_FUNCTION(dmic2_data),
+};
+
+static const struct lpi_pinctrl_variant_data qcs615_lpi_data = {
+	.pins = qcs615_lpi_pins,
+	.npins = ARRAY_SIZE(qcs615_lpi_pins),
+	.groups = qcs615_groups,
+	.ngroups = ARRAY_SIZE(qcs615_groups),
+	.functions = qcs615_functions,
+	.nfunctions = ARRAY_SIZE(qcs615_functions),
+};
+
+static const struct of_device_id lpi_pinctrl_of_match[] = {
+	{
+	       .compatible = "qcom,qcs615-lpass-lpi-pinctrl",
+	       .data = &qcs615_lpi_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);
+
+static const struct dev_pm_ops lpi_pinctrl_pm_ops = {
+	RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
+};
+
+static struct platform_driver lpi_pinctrl_driver = {
+	.driver = {
+		   .name = "qcom-qcs615-lpass-lpi-pinctrl",
+		   .of_match_table = lpi_pinctrl_of_match,
+		   .pm = pm_ptr(&lpi_pinctrl_pm_ops),
+	},
+	.probe = lpi_pinctrl_probe,
+	.remove = lpi_pinctrl_remove,
+};
+
+module_platform_driver(lpi_pinctrl_driver);
+MODULE_DESCRIPTION("QTI QCS615 LPI GPIO pin control driver");
+MODULE_LICENSE("GPL");
-- 
2.34.1