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Commit 0888e883 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
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drm/radeon/kms: fix bandwidth calculation when sideport is present 

Fixes fdo bug 27529:
https://bugs.freedesktop.org/show_bug.cgi?id=27529



Reported-by: default avatar <steckdenis@yahoo.fr>
Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 1c48bc5f

drivers/gpu/drm/radeon/rs690.c

+1 −5
Original line number Original line Diff line number Diff line
@@ -228,10 +228,6 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev, 
	fixed20_12 a, b, c;

	fixed20_12 a, b, c;

	fixed20_12 pclk, request_fifo_depth, tolerable_latency, estimated_width;

	fixed20_12 pclk, request_fifo_depth, tolerable_latency, estimated_width;

	fixed20_12 consumption_time, line_time, chunk_time, read_delay_latency;

	fixed20_12 consumption_time, line_time, chunk_time, read_delay_latency;

	/* FIXME: detect IGP with sideport memory, i don't think there is any

	 * such product available

	 */

	bool sideport = false;





	if (!crtc->base.enabled) {

	if (!crtc->base.enabled) {

		/* FIXME: wouldn't it better to set priority mark to maximum */

		/* FIXME: wouldn't it better to set priority mark to maximum */
@@ -300,7 +296,7 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev, 




	/* Maximun bandwidth is the minimun bandwidth of all component */

	/* Maximun bandwidth is the minimun bandwidth of all component */

	rdev->pm.max_bandwidth = rdev->pm.core_bandwidth;

	rdev->pm.max_bandwidth = rdev->pm.core_bandwidth;

	if (sideport) {

	if (rdev->mc.igp_sideport_enabled) {

		if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&

		if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&

			rdev->pm.sideport_bandwidth.full)

			rdev->pm.sideport_bandwidth.full)

			rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth;

			rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth;