From 867d7e0212170a24f0889e940a5b05ee34551e27 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 30 Nov 2017 14:12:36 +0200 Subject: 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: Peter Ujfalusi Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/omapdrm/dss/dispc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/gpu/drm/omapdrm/dss/dispc.c') diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c index 0f4fdb221498..90f9ad89af0d 100644 --- a/drivers/gpu/drm/omapdrm/dss/dispc.c +++ b/drivers/gpu/drm/omapdrm/dss/dispc.c @@ -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, -- cgit v1.2.3