aboutsummaryrefslogtreecommitdiffstats
path: root/common/recipes-kernel/linux/files/0916-drm-amdgpu-add-ELM-BAF-support-to-dce_v11_0_pick_pll.patch
blob: cff9b6c2d9c54cb30a5468c27195ef73ab164936 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
From 9355b7d47bafc14da1944d323db96cb5b32af968 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 15 Oct 2015 15:21:09 -0400
Subject: [PATCH 0916/1110] drm/amdgpu: add ELM/BAF support to
 dce_v11_0_pick_pll
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

New PLL scheme on ELM/BAF.

Reviewed-by: Christian K├Ânig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 53e338b..92a242a 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2384,6 +2384,18 @@ static u32 dce_v11_0_pick_pll(struct drm_crtc *crtc)
 	u32 pll_in_use;
 	int pll;
 
+	if ((adev->asic_type == CHIP_ELLESMERE) ||
+	    (adev->asic_type == CHIP_BAFFIN)) {
+		if (ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder)))
+			return ATOM_DP_DTO;
+		/* use the same PPLL for all monitors with the same clock */
+		pll = amdgpu_pll_get_shared_nondp_ppll(crtc);
+		if (pll != ATOM_PPLL_INVALID)
+			return pll;
+
+		return ATOM_COMBOPHY_PLL0 + amdgpu_crtc->crtc_id;
+	}
+
 	if (ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder))) {
 		if (adev->clock.dp_extclk)
 			/* skip PPLL programming if using ext clock */
-- 
2.7.4