subdev/bios/gpio.h

0001 /* SPDX-License-Identifier: MIT */
0002 #ifndef __NVBIOS_GPIO_H__
0003 #define __NVBIOS_GPIO_H__
0004 enum dcb_gpio_func_name {
0005     DCB_GPIO_PANEL_POWER = 0x01,
0006     DCB_GPIO_FAN = 0x09,
0007     DCB_GPIO_TVDAC0 = 0x0c,
0008     DCB_GPIO_THERM_EXT_POWER_EVENT = 0x10,
0009     DCB_GPIO_TVDAC1 = 0x2d,
0010     DCB_GPIO_FAN_SENSE = 0x3d,
0011     DCB_GPIO_POWER_ALERT = 0x4c,
0012     DCB_GPIO_EXT_POWER_LOW = 0x79,
0013     DCB_GPIO_LOGO_LED_PWM = 0x84,
0014     DCB_GPIO_UNUSED = 0xff,
0015     DCB_GPIO_VID0 = 0x04,
0016     DCB_GPIO_VID1 = 0x05,
0017     DCB_GPIO_VID2 = 0x06,
0018     DCB_GPIO_VID3 = 0x1a,
0019     DCB_GPIO_VID4 = 0x73,
0020     DCB_GPIO_VID5 = 0x74,
0021     DCB_GPIO_VID6 = 0x75,
0022     DCB_GPIO_VID7 = 0x76,
0023     DCB_GPIO_VID_PWM = 0x81,
0024 };
0025
0026 #define DCB_GPIO_LOG_DIR     0x02
0027 #define DCB_GPIO_LOG_DIR_OUT 0x00
0028 #define DCB_GPIO_LOG_DIR_IN  0x02
0029 #define DCB_GPIO_LOG_VAL     0x01
0030 #define DCB_GPIO_LOG_VAL_LO  0x00
0031 #define DCB_GPIO_LOG_VAL_HI  0x01
0032
0033 struct dcb_gpio_func {
0034     u8 func;
0035     u8 line;
0036     u8 log[2];
0037
0038     /* so far, "param" seems to only have an influence on PWM-related
0039      * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
0040      * if param equals 1, hardware PWM is available
0041      * if param equals 0, the host should toggle the GPIO itself
0042      */
0043     u8 param;
0044 };
0045
0046 u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
0047 u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
0048 u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
0049            struct dcb_gpio_func *);
0050 u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
0051            u8 *ver, u8 *len, struct dcb_gpio_func *);
0052 #endif