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Commit 867d7e02 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Tomi Valkeinen
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drm/omap: dss: Add support for reporting memory bandwidth limitation 



The get_memory_bandwidth_limit() in dispc_ops can be used to query the
memory bandwidth limit of dispc by upper layers.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 32fdb624

drivers/gpu/drm/omapdrm/dss/dispc.c

+13 −0
Original line number Diff line number Diff line
@@ -4325,6 +4325,17 @@ static void dispc_free_irq(void *dev_id) 
	dispc.user_data = NULL;

}



static u32 dispc_get_memory_bandwidth_limit(void)

{

	u32 limit = 0;



	/* Optional maximum memory bandwidth */

	of_property_read_u32(dispc.pdev->dev.of_node, "max-memory-bandwidth",

			     &limit);



	return limit;

}



/*

 * Workaround for errata i734 in DSS dispc

 *  - LCD1 Gamma Correction Is Not Working When GFX Pipe Is Disabled
@@ -4497,6 +4508,8 @@ static const struct dispc_ops dispc_ops = { 
	.get_num_ovls = dispc_get_num_ovls,

	.get_num_mgrs = dispc_get_num_mgrs,



	.get_memory_bandwidth_limit = dispc_get_memory_bandwidth_limit,



	.mgr_enable = dispc_mgr_enable,

	.mgr_is_enabled = dispc_mgr_is_enabled,

	.mgr_get_vsync_irq = dispc_mgr_get_vsync_irq,

drivers/gpu/drm/omapdrm/dss/omapdss.h

+2 −0
Original line number Diff line number Diff line
@@ -695,6 +695,8 @@ struct dispc_ops { 
	int (*get_num_ovls)(void);

	int (*get_num_mgrs)(void);



	u32 (*get_memory_bandwidth_limit)(void);



	void (*mgr_enable)(enum omap_channel channel, bool enable);

	bool (*mgr_is_enabled)(enum omap_channel channel);

	u32 (*mgr_get_vsync_irq)(enum omap_channel channel);