1/*	$NetBSD: gpio.h,v 1.3 2021/12/18 23:45:33 riastradh Exp $	*/
2
3/* SPDX-License-Identifier: MIT */
4#ifndef __NVBIOS_GPIO_H__
5#define __NVBIOS_GPIO_H__
6enum dcb_gpio_func_name {
7	DCB_GPIO_PANEL_POWER = 0x01,
8	DCB_GPIO_FAN = 0x09,
9	DCB_GPIO_TVDAC0 = 0x0c,
10	DCB_GPIO_THERM_EXT_POWER_EVENT = 0x10,
11	DCB_GPIO_TVDAC1 = 0x2d,
12	DCB_GPIO_FAN_SENSE = 0x3d,
13	DCB_GPIO_POWER_ALERT = 0x4c,
14	DCB_GPIO_EXT_POWER_LOW = 0x79,
15	DCB_GPIO_LOGO_LED_PWM = 0x84,
16	DCB_GPIO_UNUSED = 0xff,
17	DCB_GPIO_VID0 = 0x04,
18	DCB_GPIO_VID1 = 0x05,
19	DCB_GPIO_VID2 = 0x06,
20	DCB_GPIO_VID3 = 0x1a,
21	DCB_GPIO_VID4 = 0x73,
22	DCB_GPIO_VID5 = 0x74,
23	DCB_GPIO_VID6 = 0x75,
24	DCB_GPIO_VID7 = 0x76,
25	DCB_GPIO_VID_PWM = 0x81,
26};
27
28#define DCB_GPIO_LOG_DIR     0x02
29#define DCB_GPIO_LOG_DIR_OUT 0x00
30#define DCB_GPIO_LOG_DIR_IN  0x02
31#define DCB_GPIO_LOG_VAL     0x01
32#define DCB_GPIO_LOG_VAL_LO  0x00
33#define DCB_GPIO_LOG_VAL_HI  0x01
34
35struct dcb_gpio_func {
36	u8 func;
37	u8 line;
38	u8 log[2];
39
40	/* so far, "param" seems to only have an influence on PWM-related
41	 * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
42	 * if param equals 1, hardware PWM is available
43	 * if param equals 0, the host should toggle the GPIO itself
44	 */
45	u8 param;
46};
47
48u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
49u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
50u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
51		   struct dcb_gpio_func *);
52u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
53		   u8 *ver, u8 *len, struct dcb_gpio_func *);
54#endif
55