From: Richard Acayan <mailingradian@xxxxxxxxx> The Snapdragon 660 has a Low-Power Island (LPI) TLMM for configuring pins related to audio. Add the driver for this. Also, this driver uses it's own quirky pin_offset function like downstream driver does [1]. [1] https://git.codelinaro.org/clo/la/kernel/msm-4.4/-/blob/LA.UM.7.2.c27-07400-sdm660.0/drivers/pinctrl/qcom/pinctrl-lpi.c#L107 Signed-off-by: Richard Acayan <mailingradian@xxxxxxxxx> Co-developed-by: Nickolay Goppen <setotau@xxxxxxxxx> Signed-off-by: Nickolay Goppen <setotau@xxxxxxxxx> --- drivers/pinctrl/qcom/Kconfig | 10 ++ drivers/pinctrl/qcom/Makefile | 1 + drivers/pinctrl/qcom/pinctrl-sdm660-lpass-lpi.c | 196 ++++++++++++++++++++++++ 3 files changed, 207 insertions(+) diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig index dd9bbe8f3e11c37418d2143b33c21eeea10d456b..ef42520115f461302098d878cb76c6f25e55b5e4 100644 --- a/drivers/pinctrl/qcom/Kconfig +++ b/drivers/pinctrl/qcom/Kconfig @@ -68,6 +68,16 @@ config PINCTRL_SC7280_LPASS_LPI Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI (Low Power Island) found on the Qualcomm Technologies Inc SC7280 platform. +config PINCTRL_SDM660_LPASS_LPI + tristate "Qualcomm Technologies Inc SDM660 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 SDM660 platform. + config PINCTRL_SM4250_LPASS_LPI tristate "Qualcomm Technologies Inc SM4250 LPASS LPI pin controller driver" depends on ARM64 || COMPILE_TEST diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile index 954f5291cc37242baffc021e3c68d850aabd57cd..cea8617ac650ecfc75c2a0c745a53d6a1b829842 100644 --- a/drivers/pinctrl/qcom/Makefile +++ b/drivers/pinctrl/qcom/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_PINCTRL_SC7280_LPASS_LPI) += pinctrl-sc7280-lpass-lpi.o obj-$(CONFIG_PINCTRL_SC8180X) += pinctrl-sc8180x.o 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-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o obj-$(CONFIG_PINCTRL_SDX55) += pinctrl-sdx55.o diff --git a/drivers/pinctrl/qcom/pinctrl-sdm660-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sdm660-lpass-lpi.c new file mode 100644 index 0000000000000000000000000000000000000000..36fba93fda1160ad51a979996f8007393555f222 --- /dev/null +++ b/drivers/pinctrl/qcom/pinctrl-sdm660-lpass-lpi.c @@ -0,0 +1,196 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This driver is solely based on the limited information in downstream code. + * Any verification with schematics would be greatly appreciated. + * + * Copyright (c) 2023, 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_dmic12, + LPI_MUX_dmic34, + LPI_MUX_mclk0, + LPI_MUX_pdm_2_gpios, + LPI_MUX_pdm_clk, + LPI_MUX_pdm_rx, + LPI_MUX_pdm_sync, + + LPI_MUX_gpio, + LPI_MUX__, +}; + +static const u32 sdm660_lpi_offset[] = { + 0x00000000, + 0x00001000, + 0x00002000, + 0x00002010, + 0x00003000, + 0x00003010, + 0x00004000, + 0x00004010, + 0x00005000, + 0x00005010, + 0x00005020, + 0x00005030, + 0x00006000, + 0x00006010, + 0x00007000, + 0x00007010, + 0x00005040, + 0x00005050, + 0x00008000, + 0x00008010, + 0x00008020, + 0x00008030, + 0x00008040, + 0x00008050, + 0x00008060, + 0x00008070, + 0x00009000, + 0x00009010, + 0x0000a000, + 0x0000a010, + 0x0000b000, + 0x0000b010, +}; + +static const struct pinctrl_pin_desc sdm660_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 dmic12_groups[] = { "gpio26", "gpio28" }; +static const char * const dmic34_groups[] = { "gpio27", "gpio29" }; +static const char * const mclk0_groups[] = { "gpio18" }; +static const char * const pdm_2_gpios_groups[] = { "gpio20" }; +static const char * const pdm_clk_groups[] = { "gpio18" }; +static const char * const pdm_rx_groups[] = { "gpio21", "gpio23", "gpio25" }; +static const char * const pdm_sync_groups[] = { "gpio19" }; + +const struct lpi_pingroup sdm660_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, _, _, _, _), + LPI_PINGROUP(9, LPI_NO_SLEW, _, _, _, _), + LPI_PINGROUP(10, LPI_NO_SLEW, _, _, _, _), + LPI_PINGROUP(11, LPI_NO_SLEW, _, _, _, _), + 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, _, _, _, _), + + /* The function names of the PDM GPIOs are derived from SDM670 */ + LPI_PINGROUP(18, LPI_NO_SLEW, pdm_clk, mclk0, _, _), + LPI_PINGROUP(19, LPI_NO_SLEW, pdm_sync, _, _, _), + LPI_PINGROUP(20, LPI_NO_SLEW, pdm_2_gpios, _, _, _), + 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, dmic12, _, _, _), + LPI_PINGROUP(27, LPI_NO_SLEW, dmic34, _, _, _), + LPI_PINGROUP(28, LPI_NO_SLEW, dmic12, _, _, _), + LPI_PINGROUP(29, LPI_NO_SLEW, dmic34, _, _, _), + + LPI_PINGROUP(30, LPI_NO_SLEW, _, _, _, _), + LPI_PINGROUP(31, LPI_NO_SLEW, _, _, _, _), +}; + +const struct lpi_function sdm660_lpi_pinctrl_functions[] = { + LPI_FUNCTION(comp_rx), + LPI_FUNCTION(dmic12), + LPI_FUNCTION(dmic34), + LPI_FUNCTION(mclk0), + LPI_FUNCTION(pdm_2_gpios), + LPI_FUNCTION(pdm_clk), + LPI_FUNCTION(pdm_rx), + LPI_FUNCTION(pdm_sync), +}; + +static u32 lpi_pinctrl_pin_offset_sdm660(int pin_id) +{ + return sdm660_lpi_offset[pin_id]; +} + +static const struct lpi_pinctrl_variant_data sdm660_lpi_pinctrl_data = { + .pins = sdm660_lpi_pinctrl_pins, + .npins = ARRAY_SIZE(sdm660_lpi_pinctrl_pins), + .groups = sdm660_lpi_pinctrl_groups, + .ngroups = ARRAY_SIZE(sdm660_lpi_pinctrl_groups), + .functions = sdm660_lpi_pinctrl_functions, + .nfunctions = ARRAY_SIZE(sdm660_lpi_pinctrl_functions), + .flags = LPI_FLAG_SLEW_RATE_SAME_REG, + .pin_offset = lpi_pinctrl_pin_offset_sdm660, +}; + +static const struct of_device_id sdm660_lpi_pinctrl_of_match[] = { + { + .compatible = "qcom,sdm660-lpass-lpi-pinctrl", + .data = &sdm660_lpi_pinctrl_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, sdm660_lpi_pinctrl_of_match); + +static struct platform_driver sdm660_lpi_pinctrl_driver = { + .driver = { + .name = "qcom-sdm660-lpass-lpi-pinctrl", + .of_match_table = sdm660_lpi_pinctrl_of_match, + }, + .probe = lpi_pinctrl_probe, + .remove = lpi_pinctrl_remove, +}; +module_platform_driver(sdm660_lpi_pinctrl_driver); + +MODULE_AUTHOR("Richard Acayan <mailingradian@xxxxxxxxx>"); +MODULE_DESCRIPTION("QTI SDM660 LPI GPIO pin control driver"); +MODULE_LICENSE("GPL"); -- 2.51.0