From d9501cbab542bc875acba5396342a47b097e7e8d Mon Sep 17 00:00:00 2001 From: Andrew Turner Date: Tue, 28 Jul 2020 11:13:37 +0000 Subject: [PATCH] Aadd Raspberry Pi firmware messages to manage GPIOs Some GPIOs are managed by an external IO expaandder through the firmware. Add the message details for these. Sponsored by: Innovate UK --- sys/arm/broadcom/bcm2835/bcm2835_firmware.h | 55 +++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/sys/arm/broadcom/bcm2835/bcm2835_firmware.h b/sys/arm/broadcom/bcm2835/bcm2835_firmware.h index c88b03e62d38..666e450914f8 100644 --- a/sys/arm/broadcom/bcm2835/bcm2835_firmware.h +++ b/sys/arm/broadcom/bcm2835/bcm2835_firmware.h @@ -142,6 +142,61 @@ union msg_set_turbo_body { } resp; }; +#define BCM2835_FIRMWARE_TAG_GET_GPIO_STATE 0x00030041 +#define BCM2835_FIRMWARE_TAG_SET_GPIO_STATE 0x00038041 +#define BCM2835_FIRMWARE_TAG_GET_GPIO_CONFIG 0x00030043 +#define BCM2835_FIRMWARE_TAG_SET_GPIO_CONFIG 0x00038043 + +#define BCM2835_FIRMWARE_GPIO_IN 0 +#define BCM2835_FIRMWARE_GPIO_OUT 1 + +union msg_get_gpio_state { + struct { + uint32_t gpio; + } req; + struct { + uint32_t gpio; + uint32_t state; + } resp; +}; + +union msg_set_gpio_state { + struct { + uint32_t gpio; + uint32_t state; + } req; + struct { + uint32_t gpio; + } resp; +}; + +union msg_get_gpio_config { + struct { + uint32_t gpio; + } req; + struct { + uint32_t gpio; + uint32_t dir; + uint32_t pol; + uint32_t term_en; + uint32_t term_pull_up; + } resp; +}; + +union msg_set_gpio_config { + struct { + uint32_t gpio; + uint32_t dir; + uint32_t pol; + uint32_t term_en; + uint32_t term_pull_up; + uint32_t state; + } req; + struct { + uint32_t gpio; + } resp; +}; + int bcm2835_firmware_property(device_t, uint32_t, void *, size_t); #endif