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2026-03-23pinctrl: realtek: add rtd1625 pinctrl driverTzuyi Chang4-0/+3187
Add support for Realtek RTD1625 SoC using the realtek common pinctrl driver. This patch introduces the RTK_PIN_CONFIG_V2 and RTK_PIN_CONFIG_I2C macros, which are required to describe the specific register layout and electrical features (such as slew rate and high VIL) of the RTD1625 pins. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-23pinctrl: realtek: add support for slew rate, input voltage and high VILTzuyi Chang2-1/+68
Add support for configuring slew rate, input voltage level and high VIL mode. This involves updating the pin configuration parsing logic to handle PIN_CONFIG_SLEW_RATE, PIN_CONFIG_INPUT_VOLTAGE_UV and the new custom property "realtek,high-vil-microvolt". Reviewed-by: Linus Walleij <linusw@kernel.org> Signed-off-by: Tzuyi Chang <tychang@realtek.com> Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-23pinctrl: realtek: Fix function signature for config argumentYu-Chun Lin1-1/+1
The argument originates from pinconf_to_config_argument(), which returns a u32. Therefore, the arg parameter should be an unsigned int instead of enum pin_config_param. Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs") Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-16pinctrl: realtek: Fix error check for devm_platform_ioremap_resource()Chen Ni1-2/+3
Replace NULL check with IS_ERR() for devm_platform_ioremap_resource() return value. Use dev_err_probe() for error handling to maintain consistency with the rest of the probe function. Fixes: b7f698b22b8b ("pinctrl: realtek: Switch to use devm functions") Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Support system suspend and resumeTzuyi Chang2-0/+111
Add system suspend and resume capabilities to the common Realtek pinctrl library. This enables saving and restoring pin configurations during the noirq phase for SoCs that define register ranges. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Fix grammar in error messagesYu-Chun Lin1-11/+11
Correct the grammar in dev_err() messages. Change "Not support <feature>..." to "<feature> unsupported..." to improve readability and comply with standard English usage. Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Simplify error handling with dev_err_probe()Yu-Chun Lin1-6/+5
Convert the error handling code in probe() to use dev_err_probe() to enhance semantic meaning. Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Switch to use devm functionsYu-Chun Lin1-13/+5
Simplify the probe() function by switching to devm-managed versions of ioremap and pinctrl registration. Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Fix return value and silence log for unsupported configsTzuyi Chang1-2/+2
Treating unsupported configurations as errors causes upper layers (like the GPIO subsystem) to interpret optional features as hard failures, aborting operations or printing unnecessary error logs. For example, during gpiod_get(), the GPIO framework attempts to set PIN_CONFIG_PERSIST_STATE. Since this driver does not support it, false error reports are generated in dmesg. Fix this by returning -ENOTSUPP and demoting the log level to dev_dbg. Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Signed-off-by: Tzuyi Chang <tychang@realtek.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2026-03-10pinctrl: realtek: Cleanup license stringYu-Chun Lin1-1/+1
Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity") Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linusw@kernel.org>
2025-10-23pinctrl: realtek: Select REGMAP_MMIO for RTD driverYu-Chun Lin1-0/+1
The pinctrl-rtd driver uses 'devm_regmap_init_mmio', which requires 'REGMAP_MMIO' to be enabled. Without this selection, the build fails with an undefined reference: aarch64-none-linux-gnu-ld: drivers/pinctrl/realtek/pinctrl-rtd.o: in function rtd_pinctrl_probe': pinctrl-rtd.c:(.text+0x5a0): undefined reference to __devm_regmap_init_mmio_clk' Fix this by selecting 'REGMAP_MMIO' in the Kconfig. Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs") Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-08-05pinctrl: realtek: Constify struct regmap_configJavier Carrasco1-1/+1
`rtd_pinctrl_regmap_config` is not modified and can be declared as const to move its data to a read-only section. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/20240704-pinctrl-const-regmap_config-v1-2-9d5570f0b9f3@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-04-17pinctrl: realtek: fix module autoloadingKrzysztof Kozlowski2-0/+2
Add MODULE_DEVICE_TABLE(), so the module could be properly autoloaded based on the alias from of_device_id table. Pin controllers are considered core components, so usually they are built-in, however these can be built and used as modules on some generic kernel. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Message-ID: <20240411064614.7409-5-krzk@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-11-24pinctrl: realtek: Fix logical error when finding descriptorTzuyi Chang1-2/+2
The pin descriptor should be returned if the name has been found in the descriptor table. Remove the negation in the if statement for accurate retrieval. Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs") Signed-off-by: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/r/20231121091107.5564-1-tychang@realtek.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-10-06pinctrl: realtek: Fix some NULL dereference warningsLinus Walleij1-1/+9
Just inspecting the code doesn't convince me that this is a real issue, but the tools complain that it is so I will just handle it. Cc: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/oe-kbuild-all/202309270234.aJGlDE0P-lkp@intel.com/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20231006-fix-realtek-warnings-v1-2-09af253312ba@linaro.org
2023-10-06pinctrl: realtek: Tag unused pins as __maybe_unusedLinus Walleij2-2/+4
These pin definitions are helpful to have when working with the driver in the future, so they are in a sense a bit like documentation. They could be commented out as well, but why. This should fix these build warnings: drivers/pinctrl/realtek/pinctrl-rtd1315e.c:231:35: warning: 'rtd1315e_boot_sel_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1315e.c:231:35: warning: 'rtd1315e_reset_n_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1315e.c:231:35: warning: 'rtd1315e_scan_switch_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1315e.c:231:35: warning: 'rtd1315e_testmode_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1315e.c:231:35: warning: 'rtd1315e_wd_rset_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1319d.c:237:35: warning: 'rtd1319d_boot_sel_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1319d.c:237:35: warning: 'rtd1319d_reset_n_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1319d.c:237:35: warning: 'rtd1319d_scan_switch_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1319d.c:237:35: warning: 'rtd1319d_testmode_pins' defined but not used [-Wunused-const-variable=] drivers/pinctrl/realtek/pinctrl-rtd1319d.c:237:35: warning: 'rtd1319d_wd_rset_pins' defined but not used [-Wunused-const-variable=] Cc: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/oe-kbuild-all/202309270313.mBEc9o1A-lkp@intel.com/ Link: https://lore.kernel.org/oe-kbuild-all/202309270448.7Aen3Sgx-lkp@intel.com/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20231006-fix-realtek-warnings-v1-1-09af253312ba@linaro.org
2023-10-06pinctrl: realtek: Fix error handling in probe()Dan Carpenter1-5/+13
There are several issues in the probe function: 1) of_iomap() return NULL on error but the code checks for error pointers. 2) pinctrl_register() is the reverse. It returns error pointers but the code checks for NULL. 3) The error paths need to call iounmap(data->base) before returning to avoid a resource leak. Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/590b337a-13ce-4391-a09d-d2b06fbc912d@moroto.mountain Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-20pinctrl: realtek: Add pinctrl driver for RTD1619BTzuyi Chang3-0/+1607
Add RTD1619B support using realtek common pinctrl driver. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/r/20230919101117.4097-5-tychang@realtek.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-20pinctrl: realtek: Add pinctrl driver for RTD1319DTzuyi Chang3-0/+1615
Add RTD1319D support using realtek common pinctrl driver. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/r/20230919101117.4097-4-tychang@realtek.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-20pinctrl: realtek: Add pinctrl driver for RTD1315ETzuyi Chang3-0/+1445
Add RTD1315E support using realtek common pinctrl driver. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/r/20230919101117.4097-3-tychang@realtek.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-20pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCsTzuyi Chang4-0/+715
The RTD SoCs share a similar design for pinmux and pinconfig. This common pinctrl driver supports different variants within the RTD SoCs. Signed-off-by: Tzuyi Chang <tychang@realtek.com> Link: https://lore.kernel.org/r/20230919101117.4097-2-tychang@realtek.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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