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Commit e3619998 authored by Martin Peres's avatar Martin Peres Committed by Ben Skeggs
Browse files

drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table 



Signed-off-by: default avatarMartin Peres <martin.peres@labri.fr>
Reviewed-by: default avatarBen Skeggs <bskeggs@redhat.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent d89c8ce0

drivers/gpu/drm/nouveau/core/include/subdev/bios/gpio.h

+7 −0
Original line number Diff line number Diff line
@@ -16,6 +16,13 @@ struct dcb_gpio_func { 
	u8 func;

	u8 line;

	u8 log[2];



	/* so far, "param" seems to only have an influence on PWM-related

	 * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.

	 * if param equals 1, hardware PWM is available

	 * if param equals 0, the host should toggle the GPIO itself

	 */

	u8 param;

};



u16 dcb_gpio_table(struct nouveau_bios *);

drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c

+3 −0
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line, 
				.func = (data & 0x07e0) >> 5,

				.log[0] = (data & 0x1800) >> 11,

				.log[1] = (data & 0x6000) >> 13,

				.param = !!(data & 0x8000),

			};

		} else

		if (ver < 0x41) {
@@ -80,6 +81,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line, 
				.func = (data & 0x0000ff00) >> 8,

				.log[0] = (data & 0x18000000) >> 27,

				.log[1] = (data & 0x60000000) >> 29,

				.param = !!(data & 0x80000000),

			};

		} else {

			u32 data = nv_ro32(bios, entry + 0);
@@ -89,6 +91,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line, 
				.func = (data & 0x0000ff00) >> 8,

				.log[0] = (data1 & 0x30) >> 4,

				.log[1] = (data1 & 0xc0) >> 6,

				.param = !!(data & 0x80000000),

			};

		}