linux-kernel - [v1] drm/msm/disp/dpu1: set default group ID for CTL.

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Date:   Thu, 28 Oct 2021 07:05:01 -0700
From:   Kalyan Thota <quic_kalyant@...cinc.com>
To:     y@...lcomm.com, dri-devel@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Cc:     Kalyan Thota <kalyan_t@...eaurora.org>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, mkrishn@...eaurora.org, swboyd@...omium.org,
        abhinavk@...eaurora.org, Kalyan Thota <quic_kalyant@...cinc.com>
Subject: [v1] drm/msm/disp/dpu1: set default group ID for CTL.

From: Kalyan Thota <kalyan_t@...eaurora.org>

New required programming in CTL for SC7280. Group ID informs
HW of which VM owns that CTL. Force this group ID to
default/disabled until virtualization support is enabled in SW.

Signed-off-by: Kalyan Thota <quic_kalyant@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 5 ++++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c     | 3 +++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index ce6f32a..283605c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -45,7 +45,7 @@
 	(PINGPONG_SDM845_MASK | BIT(DPU_PINGPONG_TE2))
 
 #define CTL_SC7280_MASK \
-	(BIT(DPU_CTL_ACTIVE_CFG) | BIT(DPU_CTL_FETCH_ACTIVE))
+	(BIT(DPU_CTL_ACTIVE_CFG) | BIT(DPU_CTL_FETCH_ACTIVE) | BIT(DPU_CTL_VM_CFG))
 
 #define MERGE_3D_SM8150_MASK (0)
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
index 4ade44b..57b9be1 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -179,13 +179,16 @@ enum {
 
 /**
  * CTL sub-blocks
- * @DPU_CTL_SPLIT_DISPLAY       CTL supports video mode split display
+ * @DPU_CTL_SPLIT_DISPLAY,	CTL supports video mode split display
+ * @DPU_CTL_FETCH_ACTIVE,	Active CTL for fetch HW (SSPPs).
+ * @DPU_CTL_VM_CFG,		CTL supports multiple VMs.
  * @DPU_CTL_MAX
  */
 enum {
 	DPU_CTL_SPLIT_DISPLAY = 0x1,
 	DPU_CTL_ACTIVE_CFG,
 	DPU_CTL_FETCH_ACTIVE,
+	DPU_CTL_VM_CFG,
 	DPU_CTL_MAX
 };
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index 64740ddb..455b06a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -498,6 +498,9 @@ static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 	u32 intf_active = 0;
 	u32 mode_sel = 0;
 
+	if ((test_bit(DPU_CTL_VM_CFG, &ctx->caps->features)))
+		mode_sel = 0xf0000000;
+
 	if (cfg->intf_mode_sel == DPU_CTL_MODE_SEL_CMD)
 		mode_sel |= BIT(17);
 
-- 
2.7.4