1/* SPDX-License-Identifier: MIT */
 2#ifndef __NVBIOS_GPIO_H__
 3#define __NVBIOS_GPIO_H__
 4enum 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
33struct 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
46u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
47u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
48u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
49		   struct dcb_gpio_func *);
50u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
51		   u8 *ver, u8 *len, struct dcb_gpio_func *);
52#endif