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,
7 DCB_GPIO_TVDAC0 = 0x0c,
8 DCB_GPIO_TVDAC1 = 0x2d,
9 DCB_GPIO_FAN_SENSE = 0x3d,
10 DCB_GPIO_EXT_POWER_LOW = 0x79,
11 DCB_GPIO_LOGO_LED_PWM = 0x84,
12 DCB_GPIO_UNUSED = 0xff,
21 DCB_GPIO_VID_PWM = 0x81,
24 #define DCB_GPIO_LOG_DIR 0x02
25 #define DCB_GPIO_LOG_DIR_OUT 0x00
26 #define DCB_GPIO_LOG_DIR_IN 0x02
27 #define DCB_GPIO_LOG_VAL 0x01
28 #define DCB_GPIO_LOG_VAL_LO 0x00
29 #define DCB_GPIO_LOG_VAL_HI 0x01
31 struct dcb_gpio_func {
36 /* so far, "param" seems to only have an influence on PWM-related
37 * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
38 * if param equals 1, hardware PWM is available
39 * if param equals 0, the host should toggle the GPIO itself
44 u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
45 u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
46 u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
47 struct dcb_gpio_func *);
48 u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
49 u8 *ver, u8 *len, struct dcb_gpio_func *);