Commit 2f9d9041 authored Oct 07, 2025 by Thomas Zimmermann

drm/ast: Store CRTC memory request threshold in device quirks



Store each hardware's CRTC memory threshold in the specific instance
of struct ast_device_quirks. Removes the calls to IS_AST_GENn() from
ast_set_crtthd_reg().

The values stored in the registers appear to be plain limits. Hence
write them in the driver in decimal format instead of hexadecimal.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20251007150343.273718-4-tzimmermann@suse.de

parent 703f4731

drivers/gpu/drm/ast/ast_2000.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -212,6 +212,8 @@ void ast_2000_detect_tx_chip(struct ast_device *ast, bool need_post)
		}

		static const struct ast_device_quirks ast_2000_device_quirks = {
		.crtc_mem_req_threshold_low = 31,
		.crtc_mem_req_threshold_high = 47,
		};

		struct drm_device ast_2000_device_create(struct pci_dev pdev,

drivers/gpu/drm/ast/ast_2100.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -433,6 +433,8 @@ static void ast_2100_detect_widescreen(struct ast_device *ast)
		}

		static const struct ast_device_quirks ast_2100_device_quirks = {
		.crtc_mem_req_threshold_low = 47,
		.crtc_mem_req_threshold_high = 63,
		};

		struct drm_device ast_2100_device_create(struct pci_dev pdev,

drivers/gpu/drm/ast/ast_2200.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,8 @@ static void ast_2200_detect_widescreen(struct ast_device *ast)
		}

		static const struct ast_device_quirks ast_2200_device_quirks = {
		.crtc_mem_req_threshold_low = 47,
		.crtc_mem_req_threshold_high = 63,
		};

		struct drm_device ast_2200_device_create(struct pci_dev pdev,

drivers/gpu/drm/ast/ast_2300.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1408,6 +1408,8 @@ static void ast_2300_detect_widescreen(struct ast_device *ast)
		}

		static const struct ast_device_quirks ast_2300_device_quirks = {
		.crtc_mem_req_threshold_low = 96,
		.crtc_mem_req_threshold_high = 120,
		};

		struct drm_device ast_2300_device_create(struct pci_dev pdev,

drivers/gpu/drm/ast/ast_2400.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,8 @@ static void ast_2400_detect_widescreen(struct ast_device *ast)
		}

		static const struct ast_device_quirks ast_2400_device_quirks = {
		.crtc_mem_req_threshold_low = 96,
		.crtc_mem_req_threshold_high = 120,
		};

		struct drm_device ast_2400_device_create(struct pci_dev pdev,