1 /* SPDX-License-Identifier: MIT */ 2 #ifndef __NVBIOS_GPIO_H__ 3 #define __NVBIOS_GPIO_H__ 4 enum dcb_gpio_func_name { 5 DCB_GPIO_PANEL_POWER = 0x01, 6 DCB_GPIO_FAN = 0x09, 7 DCB_GPIO_TVDAC0 = 0x0c, 8 DCB_GPIO_THERM_EXT_POWER_EVENT = 0x10, 9 DCB_GPIO_TVDAC1 = 0x2d, 10 DCB_GPIO_FAN_SENSE = 0x3d, 11 DCB_GPIO_POWER_ALERT = 0x4c, 12 DCB_GPIO_EXT_POWER_LOW = 0x79, 13 DCB_GPIO_LOGO_LED_PWM = 0x84, 14 DCB_GPIO_UNUSED = 0xff, 15 DCB_GPIO_VID0 = 0x04, 16 DCB_GPIO_VID1 = 0x05, 17 DCB_GPIO_VID2 = 0x06, 18 DCB_GPIO_VID3 = 0x1a, 19 DCB_GPIO_VID4 = 0x73, 20 DCB_GPIO_VID5 = 0x74, 21 DCB_GPIO_VID6 = 0x75, 22 DCB_GPIO_VID7 = 0x76, 23 DCB_GPIO_VID_PWM = 0x81, 24 }; 25 26 #define DCB_GPIO_LOG_DIR 0x02 27 #define DCB_GPIO_LOG_DIR_OUT 0x00 28 #define DCB_GPIO_LOG_DIR_IN 0x02 29 #define DCB_GPIO_LOG_VAL 0x01 30 #define DCB_GPIO_LOG_VAL_LO 0x00 31 #define DCB_GPIO_LOG_VAL_HI 0x01 32 33 struct dcb_gpio_func { 34 u8 func; 35 u8 line; 36 u8 log[2]; 37 38 /* so far, "param" seems to only have an influence on PWM-related 39 * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL. 40 * if param equals 1, hardware PWM is available 41 * if param equals 0, the host should toggle the GPIO itself 42 */ 43 u8 param; 44 }; 45 46 u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len); 47 u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len); 48 u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len, 49 struct dcb_gpio_func *); 50 u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line, 51 u8 *ver, u8 *len, struct dcb_gpio_func *); 52 #endif 53