From: Marek Behún Date: Fri, 19 Jul 2024 08:57:56 +0000 (+0200) Subject: platform: cznic: turris-omnia-mcu: Make GPIO code optional X-Git-Tag: v6.11-rc3~19^2~4 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af340b7aa21c351ba08950f664af601888633614;p=thirdparty%2Fkernel%2Flinux.git platform: cznic: turris-omnia-mcu: Make GPIO code optional Make the GPIO part of the driver optional, under a boolean config option. Move the dependency to GPIOLIB and OF and the selection of GPIOLIB_IRQCHIP to this new option. This makes the turris-omnia-mcu driver available for compilation even if GPIOLIB or OF are disabled. Fixes: ed46f1f7731d ("platform: cznic: turris-omnia-mcu: fix Kconfig dependencies") Signed-off-by: Marek Behún Link: https://lore.kernel.org/r/20240719085756.30598-5-kabel@kernel.org Signed-off-by: Arnd Bergmann --- diff --git a/drivers/platform/cznic/Kconfig b/drivers/platform/cznic/Kconfig index f02856226dd74..a111eca8ff57d 100644 --- a/drivers/platform/cznic/Kconfig +++ b/drivers/platform/cznic/Kconfig @@ -16,31 +16,38 @@ config TURRIS_OMNIA_MCU tristate "Turris Omnia MCU driver" depends on MACH_ARMADA_38X || COMPILE_TEST depends on I2C - depends on OF - depends on GPIOLIB - select GPIOLIB_IRQCHIP help Say Y here to add support for the features implemented by the microcontroller on the CZ.NIC's Turris Omnia SOHO router. - The features include: - - GPIO pins - - to get front button press events (the front button can be - configured either to generate press events to the CPU or to change - front LEDs panel brightness) - - to enable / disable USB port voltage regulators and to detect - USB overcurrent - - to detect MiniPCIe / mSATA card presence in MiniPCIe port 0 - - to configure resets of various peripherals on board revisions 32+ - - to enable / disable the VHV voltage regulator to the SOC in order - to be able to program SOC's OTP on board revisions 32+ - - to get input from the LED output pins of the WAN ethernet PHY, LAN - switch and MiniPCIe ports - Other features can be enabled by subsequent config options. + This option only enables the core part of the driver. Specific + features can be enabled by subsequent config options. To compile this driver as a module, choose M here; the module will be called turris-omnia-mcu. if TURRIS_OMNIA_MCU +config TURRIS_OMNIA_MCU_GPIO + bool "Turris Omnia MCU GPIOs" + default y + depends on GPIOLIB + depends on OF + select GPIOLIB_IRQCHIP + help + Say Y here to add support for controlling MCU GPIO pins and receiving + MCU interrupts on CZ.NIC's Turris Omnia. + This enables you to + - get front button press events (the front button can be configured + either to generate press events to the CPU or to change front LEDs + panel brightness), + - enable / disable USB port voltage regulators and to detect USB + overcurrent, + - detect MiniPCIe / mSATA card presence in MiniPCIe port 0, + - configure resets of various peripherals on board revisions 32+, + - enable / disable the VHV voltage regulator to the SOC in order to be + able to program SOC's OTP on board revisions 32+, + - get input from the LED output pins of the WAN ethernet PHY, LAN + switch and MiniPCIe ports. + config TURRIS_OMNIA_MCU_SYSOFF_WAKEUP bool "Turris Omnia MCU system off and RTC wakeup" default y @@ -62,6 +69,7 @@ config TURRIS_OMNIA_MCU_WATCHDOG config TURRIS_OMNIA_MCU_TRNG bool "Turris Omnia MCU true random number generator" default y + depends on TURRIS_OMNIA_MCU_GPIO depends on HW_RANDOM help Say Y here to add support for the true random number generator diff --git a/drivers/platform/cznic/Makefile b/drivers/platform/cznic/Makefile index 380530ba74f7b..ce6d997f34d66 100644 --- a/drivers/platform/cznic/Makefile +++ b/drivers/platform/cznic/Makefile @@ -2,7 +2,7 @@ obj-$(CONFIG_TURRIS_OMNIA_MCU) += turris-omnia-mcu.o turris-omnia-mcu-y := turris-omnia-mcu-base.o -turris-omnia-mcu-y += turris-omnia-mcu-gpio.o +turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_GPIO) += turris-omnia-mcu-gpio.o turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_SYSOFF_WAKEUP) += turris-omnia-mcu-sys-off-wakeup.o turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_TRNG) += turris-omnia-mcu-trng.o turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_WATCHDOG) += turris-omnia-mcu-watchdog.o diff --git a/drivers/platform/cznic/turris-omnia-mcu-base.c b/drivers/platform/cznic/turris-omnia-mcu-base.c index 7b514e60273dc..58f9afae28673 100644 --- a/drivers/platform/cznic/turris-omnia-mcu-base.c +++ b/drivers/platform/cznic/turris-omnia-mcu-base.c @@ -197,7 +197,9 @@ static const struct attribute_group omnia_mcu_base_group = { static const struct attribute_group *omnia_mcu_groups[] = { &omnia_mcu_base_group, +#ifdef CONFIG_TURRIS_OMNIA_MCU_GPIO &omnia_mcu_gpio_group, +#endif #ifdef CONFIG_TURRIS_OMNIA_MCU_SYSOFF_WAKEUP &omnia_mcu_poweroff_group, #endif diff --git a/drivers/platform/cznic/turris-omnia-mcu.h b/drivers/platform/cznic/turris-omnia-mcu.h index 75fa2111546f7..fed0d357fea39 100644 --- a/drivers/platform/cznic/turris-omnia-mcu.h +++ b/drivers/platform/cznic/turris-omnia-mcu.h @@ -33,6 +33,7 @@ struct omnia_mcu { u8 board_first_mac[ETH_ALEN]; u8 board_revision; +#ifdef CONFIG_TURRIS_OMNIA_MCU_GPIO /* GPIO chip */ struct gpio_chip gc; struct mutex lock; @@ -41,6 +42,7 @@ struct omnia_mcu { struct delayed_work button_release_emul_work; unsigned long last_status; bool button_pressed_emul; +#endif #ifdef CONFIG_TURRIS_OMNIA_MCU_SYSOFF_WAKEUP /* RTC device for configuring wake-up */ @@ -188,9 +190,16 @@ static inline int omnia_cmd_read_u8(const struct i2c_client *client, u8 cmd, return omnia_cmd_read(client, cmd, reply, sizeof(*reply)); } +#ifdef CONFIG_TURRIS_OMNIA_MCU_GPIO extern const u8 omnia_int_to_gpio_idx[32]; extern const struct attribute_group omnia_mcu_gpio_group; int omnia_mcu_register_gpiochip(struct omnia_mcu *mcu); +#else +static inline int omnia_mcu_register_gpiochip(struct omnia_mcu *mcu) +{ + return 0; +} +#endif #ifdef CONFIG_TURRIS_OMNIA_MCU_SYSOFF_WAKEUP extern const struct attribute_group omnia_mcu_poweroff_group;