[PATCH v2 3/5] pinctrl: qcom: add sdm670 lpi tlmm

[Richard Acayan <mailingradian@gmail.com>]

The Snapdragon 670 has an Low-Power Island (LPI) TLMM for configuring
pins related to audio. Add the driver for this.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 drivers/pinctrl/qcom/Kconfig                  |  10 ++
 drivers/pinctrl/qcom/Makefile                 |   1 +
 .../pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c   | 166 ++++++++++++++++++
 3 files changed, 177 insertions(+)
 create mode 100644 drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index f56592411cf6..eb8ed3effd58 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -89,6 +89,16 @@ config PINCTRL_SM4250_LPASS_LPI
 	  Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
 	  (Low Power Island) found on the Qualcomm Technologies Inc SM4250 platform.
 
+config PINCTRL_SDM670_LPASS_LPI
+	tristate "Qualcomm Technologies Inc SDM670 LPASS LPI pin controller driver"
+	depends on GPIOLIB
+	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 SDM670 platform.
+
 config PINCTRL_SM6115_LPASS_LPI
 	tristate "Qualcomm Technologies Inc SM6115 LPASS LPI pin controller driver"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 4269d1781015..ed2127d26912 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_SC8280XP)	+= pinctrl-sc8280xp.o
 obj-$(CONFIG_PINCTRL_SDM660)   += pinctrl-sdm660.o
 obj-$(CONFIG_PINCTRL_SDM660_LPASS_LPI) += pinctrl-sdm660-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SDM670) += pinctrl-sdm670.o
+obj-$(CONFIG_PINCTRL_SDM670_LPASS_LPI) += pinctrl-sdm670-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
 obj-$(CONFIG_PINCTRL_SDX55) += pinctrl-sdx55.o
 obj-$(CONFIG_PINCTRL_SDX65) += pinctrl-sdx65.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c
new file mode 100644
index 000000000000..6270c6d09c22
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023-2026, Richard Acayan. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+
+#include "pinctrl-lpass-lpi.h"
+
+enum lpass_lpi_functions {
+	LPI_MUX_comp_rx,
+	LPI_MUX_dmic1_clk,
+	LPI_MUX_dmic1_data,
+	LPI_MUX_dmic2_clk,
+	LPI_MUX_dmic2_data,
+	LPI_MUX_i2s1_clk,
+	LPI_MUX_i2s1_data,
+	LPI_MUX_i2s1_ws,
+	LPI_MUX_lpi_cdc_rst,
+	LPI_MUX_mclk0,
+	LPI_MUX_pdm_rx,
+	LPI_MUX_pdm_sync,
+	LPI_MUX_pdm_tx,
+	LPI_MUX_slimbus_clk,
+	LPI_MUX_gpio,
+	LPI_MUX__,
+};
+
+static const struct pinctrl_pin_desc sdm670_lpi_pinctrl_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 comp_rx_groups[] = { "gpio22", "gpio24" };
+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 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 lpi_cdc_rst_groups[] = { "gpio29" };
+static const char * const mclk0_groups[] = { "gpio19" };
+static const char * const pdm_rx_groups[] = { "gpio21", "gpio23", "gpio25" };
+static const char * const pdm_sync_groups[] = { "gpio19" };
+static const char * const pdm_tx_groups[] = { "gpio20" };
+static const char * const slimbus_clk_groups[] = { "gpio18" };
+
+const struct lpi_pingroup sdm670_lpi_pinctrl_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, _, slimbus_clk, _, _),
+	LPI_PINGROUP(19, LPI_NO_SLEW, mclk0, _, pdm_sync, _),
+	LPI_PINGROUP(20, LPI_NO_SLEW, _, pdm_tx, _, _),
+	LPI_PINGROUP(21, LPI_NO_SLEW, _, pdm_rx, _, _),
+	LPI_PINGROUP(22, LPI_NO_SLEW, _, comp_rx, _, _),
+	LPI_PINGROUP(23, LPI_NO_SLEW, pdm_rx, _, _, _),
+	LPI_PINGROUP(24, LPI_NO_SLEW, comp_rx, _, _, _),
+	LPI_PINGROUP(25, LPI_NO_SLEW, pdm_rx, _, _, _),
+	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_cdc_rst, _, _),
+	LPI_PINGROUP(30, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(31, LPI_NO_SLEW, _, _, _, _),
+};
+
+const struct lpi_function sdm670_lpi_pinctrl_functions[] = {
+	LPI_FUNCTION(comp_rx),
+	LPI_FUNCTION(dmic1_clk),
+	LPI_FUNCTION(dmic1_data),
+	LPI_FUNCTION(dmic2_clk),
+	LPI_FUNCTION(dmic2_data),
+	LPI_FUNCTION(i2s1_clk),
+	LPI_FUNCTION(i2s1_data),
+	LPI_FUNCTION(i2s1_ws),
+	LPI_FUNCTION(lpi_cdc_rst),
+	LPI_FUNCTION(mclk0),
+	LPI_FUNCTION(pdm_tx),
+	LPI_FUNCTION(pdm_rx),
+	LPI_FUNCTION(pdm_sync),
+	LPI_FUNCTION(slimbus_clk),
+};
+
+static const struct lpi_pinctrl_variant_data sdm670_lpi_pinctrl_data = {
+	.pins = sdm670_lpi_pinctrl_pins,
+	.npins = ARRAY_SIZE(sdm670_lpi_pinctrl_pins),
+	.groups = sdm670_lpi_pinctrl_groups,
+	.ngroups = ARRAY_SIZE(sdm670_lpi_pinctrl_groups),
+	.functions = sdm670_lpi_pinctrl_functions,
+	.nfunctions = ARRAY_SIZE(sdm670_lpi_pinctrl_functions),
+	.flags = LPI_FLAG_SLEW_RATE_SAME_REG,
+};
+
+static const struct of_device_id sdm670_lpi_pinctrl_of_match[] = {
+	{
+		.compatible = "qcom,sdm670-lpass-lpi-pinctrl",
+		.data = &sdm670_lpi_pinctrl_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sdm670_lpi_pinctrl_of_match);
+
+static struct platform_driver sdm670_lpi_pinctrl_driver = {
+	.driver = {
+		.name = "qcom-sdm670-lpass-lpi-pinctrl",
+		.of_match_table = sdm670_lpi_pinctrl_of_match,
+	},
+	.probe = lpi_pinctrl_probe,
+	.remove = lpi_pinctrl_remove,
+};
+module_platform_driver(sdm670_lpi_pinctrl_driver);
+
+MODULE_AUTHOR("Richard Acayan <mailingradian@gmail.com>");
+MODULE_DESCRIPTION("QTI SDM670 LPI GPIO pin control driver");
+MODULE_LICENSE("GPL");
-- 
2.53.0