pinctrl: qcom: sm8650-lpass-lpi: add SM8650 LPASS

Add driver for the pin controller in Low Power Audio SubSystem (LPASS)
of Qualcomm SM8650 SoC.

Notable differences against SM8550 LPASS pin controller:
1. Additional address space for slew rate thus driver uses
   LPI_FLAG_SLEW_RATE_SAME_REG and sets slew rate via different
   register.

2. Two new pin mux functions: qca_swr_clk and qca_swr_data

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231027093615.140656-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 266 insertions, 0 deletions

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index f84c0d3b7951..e0f2829c15d6 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -124,4 +124,14 @@ config PINCTRL_SM8550_LPASS_LPI
 	  (Low Power Island) found on the Qualcomm Technologies Inc SM8550
 	  platform.
 
+config PINCTRL_SM8650_LPASS_LPI
+	tristate "Qualcomm Technologies Inc SM8550 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 SM8650
+	  platform.
+
 endif
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 5910e08c84ce..f7b410e59bf1 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -58,5 +58,6 @@ obj-$(CONFIG_PINCTRL_SM8450) += pinctrl-sm8450.o
 obj-$(CONFIG_PINCTRL_SM8450_LPASS_LPI) += pinctrl-sm8450-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SM8550) += pinctrl-sm8550.o
 obj-$(CONFIG_PINCTRL_SM8550_LPASS_LPI) += pinctrl-sm8550-lpass-lpi.o
+obj-$(CONFIG_PINCTRL_SM8650_LPASS_LPI) += pinctrl-sm8650-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SC8280XP_LPASS_LPI) += pinctrl-sc8280xp-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_LPASS_LPI) += pinctrl-lpass-lpi.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sm8650-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sm8650-lpass-lpi.c
new file mode 100644
index 000000000000..6e4be91ff085
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sm8650-lpass-lpi.c
@@ -0,0 +1,255 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022-2023 Linaro Ltd.
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "pinctrl-lpass-lpi.h"
+
+enum lpass_lpi_functions {
+	LPI_MUX_dmic1_clk,
+	LPI_MUX_dmic1_data,
+	LPI_MUX_dmic2_clk,
+	LPI_MUX_dmic2_data,
+	LPI_MUX_dmic3_clk,
+	LPI_MUX_dmic3_data,
+	LPI_MUX_dmic4_clk,
+	LPI_MUX_dmic4_data,
+	LPI_MUX_i2s0_clk,
+	LPI_MUX_i2s0_data,
+	LPI_MUX_i2s0_ws,
+	LPI_MUX_i2s1_clk,
+	LPI_MUX_i2s1_data,
+	LPI_MUX_i2s1_ws,
+	LPI_MUX_i2s2_clk,
+	LPI_MUX_i2s2_data,
+	LPI_MUX_i2s2_ws,
+	LPI_MUX_i2s3_clk,
+	LPI_MUX_i2s3_data,
+	LPI_MUX_i2s3_ws,
+	LPI_MUX_i2s4_clk,
+	LPI_MUX_i2s4_data,
+	LPI_MUX_i2s4_ws,
+	LPI_MUX_qca_swr_clk,
+	LPI_MUX_qca_swr_data,
+	LPI_MUX_slimbus_clk,
+	LPI_MUX_slimbus_data,
+	LPI_MUX_swr_rx_clk,
+	LPI_MUX_swr_rx_data,
+	LPI_MUX_swr_tx_clk,
+	LPI_MUX_swr_tx_data,
+	LPI_MUX_wsa_swr_clk,
+	LPI_MUX_wsa_swr_data,
+	LPI_MUX_wsa2_swr_clk,
+	LPI_MUX_wsa2_swr_data,
+	LPI_MUX_ext_mclk1_a,
+	LPI_MUX_ext_mclk1_b,
+	LPI_MUX_ext_mclk1_c,
+	LPI_MUX_ext_mclk1_d,
+	LPI_MUX_ext_mclk1_e,
+	LPI_MUX_gpio,
+	LPI_MUX__,
+};
+
+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 gpio8_pins[] = { 8 };
+static int gpio9_pins[] = { 9 };
+static int gpio10_pins[] = { 10 };
+static int gpio11_pins[] = { 11 };
+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 gpio19_pins[] = { 19 };
+static int gpio20_pins[] = { 20 };
+static int gpio21_pins[] = { 21 };
+static int gpio22_pins[] = { 22 };
+
+static const struct pinctrl_pin_desc sm8650_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"),
+};
+
+static const char * const gpio_groups[] = {
+	"gpio0", "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7",
+	"gpio8", "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14",
+	"gpio15", "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21",
+	"gpio22",
+};
+
+static const char * const dmic1_clk_groups[] = { "gpio6" };
+static const char * const dmic1_data_groups[] = { "gpio7" };
+static const char * const dmic2_clk_groups[] = { "gpio8" };
+static const char * const dmic2_data_groups[] = { "gpio9" };
+static const char * const dmic3_clk_groups[] = { "gpio12" };
+static const char * const dmic3_data_groups[] = { "gpio13" };
+static const char * const dmic4_clk_groups[] = { "gpio17" };
+static const char * const dmic4_data_groups[] = { "gpio18" };
+static const char * const i2s0_clk_groups[] = { "gpio0" };
+static const char * const i2s0_ws_groups[] = { "gpio1" };
+static const char * const i2s0_data_groups[] = { "gpio2", "gpio3", "gpio4", "gpio5" };
+static const char * const i2s1_clk_groups[] = { "gpio6" };
+static const char * const i2s1_ws_groups[] = { "gpio7" };
+static const char * const i2s1_data_groups[] = { "gpio8", "gpio9" };
+static const char * const i2s2_clk_groups[] = { "gpio10" };
+static const char * const i2s2_ws_groups[] = { "gpio11" };
+static const char * const i2s2_data_groups[] = { "gpio15", "gpio16" };
+static const char * const i2s3_clk_groups[] = { "gpio12" };
+static const char * const i2s3_ws_groups[] = { "gpio13" };
+static const char * const i2s3_data_groups[] = { "gpio17", "gpio18" };
+static const char * const i2s4_clk_groups[] = { "gpio19"};
+static const char * const i2s4_ws_groups[] = { "gpio20"};
+static const char * const i2s4_data_groups[] = { "gpio21", "gpio22"};
+static const char * const qca_swr_clk_groups[] = { "gpio19" };
+static const char * const qca_swr_data_groups[] = { "gpio20" };
+static const char * const slimbus_clk_groups[] = { "gpio19"};
+static const char * const slimbus_data_groups[] = { "gpio20"};
+static const char * const swr_tx_clk_groups[] = { "gpio0" };
+static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio14" };
+static const char * const swr_rx_clk_groups[] = { "gpio3" };
+static const char * const swr_rx_data_groups[] = { "gpio4", "gpio5", "gpio15" };
+static const char * const wsa_swr_clk_groups[] = { "gpio10" };
+static const char * const wsa_swr_data_groups[] = { "gpio11" };
+static const char * const wsa2_swr_clk_groups[] = { "gpio15" };
+static const char * const wsa2_swr_data_groups[] = { "gpio16" };
+static const char * const ext_mclk1_c_groups[] = { "gpio5" };
+static const char * const ext_mclk1_b_groups[] = { "gpio9" };
+static const char * const ext_mclk1_a_groups[] = { "gpio13" };
+static const char * const ext_mclk1_d_groups[] = { "gpio14" };
+static const char * const ext_mclk1_e_groups[] = { "gpio22" };
+
+static const struct lpi_pingroup sm8650_groups[] = {
+	LPI_PINGROUP(0, 11, swr_tx_clk, i2s0_clk, _, _),
+	LPI_PINGROUP(1, 11, swr_tx_data, i2s0_ws, _, _),
+	LPI_PINGROUP(2, 11, swr_tx_data, i2s0_data, _, _),
+	LPI_PINGROUP(3, 11, swr_rx_clk, i2s0_data, _, _),
+	LPI_PINGROUP(4, 11, swr_rx_data, i2s0_data, _, _),
+	LPI_PINGROUP(5, 11, swr_rx_data, ext_mclk1_c, i2s0_data, _),
+	LPI_PINGROUP(6, LPI_NO_SLEW, dmic1_clk, i2s1_clk, _,  _),
+	LPI_PINGROUP(7, LPI_NO_SLEW, dmic1_data, i2s1_ws, _, _),
+	LPI_PINGROUP(8, LPI_NO_SLEW, dmic2_clk, i2s1_data, _, _),
+	LPI_PINGROUP(9, LPI_NO_SLEW, dmic2_data, i2s1_data, ext_mclk1_b, _),
+	LPI_PINGROUP(10, 11, i2s2_clk, wsa_swr_clk, _, _),
+	LPI_PINGROUP(11, 11, i2s2_ws, wsa_swr_data, _, _),
+	LPI_PINGROUP(12, LPI_NO_SLEW, dmic3_clk, i2s3_clk, _, _),
+	LPI_PINGROUP(13, LPI_NO_SLEW, dmic3_data, i2s3_ws, ext_mclk1_a, _),
+	LPI_PINGROUP(14, 11, swr_tx_data, ext_mclk1_d, _, _),
+	LPI_PINGROUP(15, 11, i2s2_data, wsa2_swr_clk, _, _),
+	LPI_PINGROUP(16, 11, i2s2_data, wsa2_swr_data, _, _),
+	LPI_PINGROUP(17, LPI_NO_SLEW, dmic4_clk, i2s3_data, _, _),
+	LPI_PINGROUP(18, LPI_NO_SLEW, dmic4_data, i2s3_data, _, _),
+	LPI_PINGROUP(19, 11, i2s4_clk, slimbus_clk, qca_swr_clk, _),
+	LPI_PINGROUP(20, 11, i2s4_ws, slimbus_data, qca_swr_data, _),
+	LPI_PINGROUP(21, LPI_NO_SLEW, i2s4_data, _, _, _),
+	LPI_PINGROUP(22, LPI_NO_SLEW, i2s4_data, ext_mclk1_e, _, _),
+};
+
+static const struct lpi_function sm8650_functions[] = {
+	LPI_FUNCTION(gpio),
+	LPI_FUNCTION(dmic1_clk),
+	LPI_FUNCTION(dmic1_data),
+	LPI_FUNCTION(dmic2_clk),
+	LPI_FUNCTION(dmic2_data),
+	LPI_FUNCTION(dmic3_clk),
+	LPI_FUNCTION(dmic3_data),
+	LPI_FUNCTION(dmic4_clk),
+	LPI_FUNCTION(dmic4_data),
+	LPI_FUNCTION(i2s0_clk),
+	LPI_FUNCTION(i2s0_data),
+	LPI_FUNCTION(i2s0_ws),
+	LPI_FUNCTION(i2s1_clk),
+	LPI_FUNCTION(i2s1_data),
+	LPI_FUNCTION(i2s1_ws),
+	LPI_FUNCTION(i2s2_clk),
+	LPI_FUNCTION(i2s2_data),
+	LPI_FUNCTION(i2s2_ws),
+	LPI_FUNCTION(i2s3_clk),
+	LPI_FUNCTION(i2s3_data),
+	LPI_FUNCTION(i2s3_ws),
+	LPI_FUNCTION(i2s4_clk),
+	LPI_FUNCTION(i2s4_data),
+	LPI_FUNCTION(i2s4_ws),
+	LPI_FUNCTION(qca_swr_clk),
+	LPI_FUNCTION(qca_swr_data),
+	LPI_FUNCTION(slimbus_clk),
+	LPI_FUNCTION(slimbus_data),
+	LPI_FUNCTION(swr_rx_clk),
+	LPI_FUNCTION(swr_rx_data),
+	LPI_FUNCTION(swr_tx_clk),
+	LPI_FUNCTION(swr_tx_data),
+	LPI_FUNCTION(wsa_swr_clk),
+	LPI_FUNCTION(wsa_swr_data),
+	LPI_FUNCTION(wsa2_swr_clk),
+	LPI_FUNCTION(wsa2_swr_data),
+	LPI_FUNCTION(ext_mclk1_a),
+	LPI_FUNCTION(ext_mclk1_b),
+	LPI_FUNCTION(ext_mclk1_c),
+	LPI_FUNCTION(ext_mclk1_d),
+	LPI_FUNCTION(ext_mclk1_e),
+};
+
+static const struct lpi_pinctrl_variant_data sm8650_lpi_data = {
+	.pins = sm8650_lpi_pins,
+	.npins = ARRAY_SIZE(sm8650_lpi_pins),
+	.groups = sm8650_groups,
+	.ngroups = ARRAY_SIZE(sm8650_groups),
+	.functions = sm8650_functions,
+	.nfunctions = ARRAY_SIZE(sm8650_functions),
+	.flags = LPI_FLAG_SLEW_RATE_SAME_REG,
+};
+
+static const struct of_device_id lpi_pinctrl_of_match[] = {
+	{
+	       .compatible = "qcom,sm8650-lpass-lpi-pinctrl",
+	       .data = &sm8650_lpi_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);
+
+static struct platform_driver lpi_pinctrl_driver = {
+	.driver = {
+		   .name = "qcom-sm8650-lpass-lpi-pinctrl",
+		   .of_match_table = lpi_pinctrl_of_match,
+	},
+	.probe = lpi_pinctrl_probe,
+	.remove_new = lpi_pinctrl_remove,
+};
+
+module_platform_driver(lpi_pinctrl_driver);
+MODULE_DESCRIPTION("Qualcomm SM8650 LPI GPIO pin control driver");
+MODULE_LICENSE("GPL");