>From 0d2509130004624ffdc21f0d1666d5ac869d124a Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeuc...@gmail.com>
Date: Tue, 30 Mar 2010 12:22:17 -0400
Subject: [PATCH] drm/radeon/kms: display watermark updates

- Add module option to force the display priority
  0 = auto, 1 = normal, 2 = high
- Default to high on r3xx/r4xx/rv515 chips
  Fixes flickering problems during heavy acceleration
  due to underflow to the display controllers
- Fill in minimal support for RS600

Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
 drivers/gpu/drm/radeon/radeon.h         |    1 +
 drivers/gpu/drm/radeon/radeon_display.c |   13 +++++++
 drivers/gpu/drm/radeon/radeon_drv.c     |    4 ++
 drivers/gpu/drm/radeon/rs600.c          |   23 +++++++++++++-
 drivers/gpu/drm/radeon/rs600d.h         |   53 +++++++++++++++++++++++++++++++
 drivers/gpu/drm/radeon/rs690.c          |   33 +++++++++++++------
 drivers/gpu/drm/radeon/rs690d.h         |    3 ++
 drivers/gpu/drm/radeon/rv515.c          |   33 +++++++++++++------
 8 files changed, 142 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 55da095..d300486 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -91,6 +91,7 @@ extern int radeon_tv;
 extern int radeon_new_pll;
 extern int radeon_dynpm;
 extern int radeon_audio;
+extern int radeon_disp_priority;

 /*
  * Copy from radeon_drv.h so we don't have to include both and have conflicting
diff --git a/drivers/gpu/drm/radeon/radeon_display.c
b/drivers/gpu/drm/radeon/radeon_display.c
index eca714c..600f7b1 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -996,6 +996,19 @@ int radeon_modeset_init(struct radeon_device *rdev)
                return ret;
        }

+       /* adjustment options for the display watermarks */
+       if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
+               /* set display priority to high for r3xx, rv515 chips
+                * this avoids flickering due to underflow to the
+                * display controllers during heavy acceleration.
+                */
+               if (ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515))
+                       rdev->disp_priority = 2;
+               else
+                       rdev->disp_priority = 0;
+       } else
+               rdev->disp_priority = radeon_disp_priority;
+
        /* check combios for a valid hardcoded EDID - Sun servers */
        if (!rdev->is_atom_bios) {
                /* check for hardcoded EDID in BIOS */
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c
b/drivers/gpu/drm/radeon/radeon_drv.c
index 54ec049..6fd511e 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -92,6 +92,7 @@ int radeon_tv = 1;
 int radeon_new_pll = -1;
 int radeon_dynpm = -1;
 int radeon_audio = 1;
+int radeon_disp_priority = 0;

 MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
 module_param_named(no_wb, radeon_no_wb, int, 0444);
@@ -135,6 +136,9 @@ module_param_named(dynpm, radeon_dynpm, int, 0444);
 MODULE_PARM_DESC(audio, "Audio enable (0 = disable)");
 module_param_named(audio, radeon_audio, int, 0444);

+MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 =
normal, 2 = high)");
+module_param_named(disp_priority, radeon_disp_priority, int, 0444);
+
 static int radeon_suspend(struct drm_device *dev, pm_message_t state)
 {
        drm_radeon_private_t *dev_priv = dev->dev_private;
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 7d8ae42..edd5cd8 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -554,7 +554,28 @@ void rs600_mc_init(struct radeon_device *rdev)

 void rs600_bandwidth_update(struct radeon_device *rdev)
 {
-       /* FIXME: implement, should this be like rs690 ? */
+       struct drm_display_mode *mode0 = NULL;
+       struct drm_display_mode *mode1 = NULL;
+       u32 d1mode_priority_a_cnt, d2mode_priority_a_cnt;
+       /* FIXME: implement full support */
+
+       if (rdev->mode_info.crtcs[0]->base.enabled)
+               mode0 = &rdev->mode_info.crtcs[0]->base.mode;
+       if (rdev->mode_info.crtcs[1]->base.enabled)
+               mode1 = &rdev->mode_info.crtcs[1]->base.mode;
+
+       rs690_line_buffer_adjust(rdev, mode0, mode1);
+
+       if (rdev->disp_priority == 2) {
+               d1mode_priority_a_cnt = RREG32(R_006548_D1MODE_PRIORITY_A_CNT);
+               d2mode_priority_a_cnt = RREG32(R_006D48_D2MODE_PRIORITY_A_CNT);
+               d1mode_priority_a_cnt |= 
S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);
+               d2mode_priority_a_cnt |= 
S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);
+               WREG32(R_006548_D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
+               WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
+               WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
+               WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
+       }
 }

 uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg)
diff --git a/drivers/gpu/drm/radeon/rs600d.h b/drivers/gpu/drm/radeon/rs600d.h
index 00896c5..08c4beb 100644
--- a/drivers/gpu/drm/radeon/rs600d.h
+++ b/drivers/gpu/drm/radeon/rs600d.h
@@ -581,4 +581,57 @@
 #define   G_00016C_INVALIDATE_L1_TLB(x)                (((x) >> 20) & 0x1)
 #define   C_00016C_INVALIDATE_L1_TLB                   0xFFEFFFFF

+#define R_006548_D1MODE_PRIORITY_A_CNT               0x006548
+#define   S_006548_D1MODE_PRIORITY_MARK_A(x)           (((x) & 0x7FFF) << 0)
+#define   G_006548_D1MODE_PRIORITY_MARK_A(x)           (((x) >> 0) & 0x7FFF)
+#define   C_006548_D1MODE_PRIORITY_MARK_A              0xFFFF8000
+#define   S_006548_D1MODE_PRIORITY_A_OFF(x)            (((x) & 0x1) << 16)
+#define   G_006548_D1MODE_PRIORITY_A_OFF(x)            (((x) >> 16) & 0x1)
+#define   C_006548_D1MODE_PRIORITY_A_OFF               0xFFFEFFFF
+#define   S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) & 0x1) << 20)
+#define   G_006548_D1MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) >> 20) & 0x1)
+#define   C_006548_D1MODE_PRIORITY_A_ALWAYS_ON         0xFFEFFFFF
+#define   S_006548_D1MODE_PRIORITY_A_FORCE_MASK(x)     (((x) & 0x1) << 24)
+#define   G_006548_D1MODE_PRIORITY_A_FORCE_MASK(x)     (((x) >> 24) & 0x1)
+#define   C_006548_D1MODE_PRIORITY_A_FORCE_MASK        0xFEFFFFFF
+#define R_00654C_D1MODE_PRIORITY_B_CNT               0x00654C
+#define   S_00654C_D1MODE_PRIORITY_MARK_B(x)           (((x) & 0x7FFF) << 0)
+#define   G_00654C_D1MODE_PRIORITY_MARK_B(x)           (((x) >> 0) & 0x7FFF)
+#define   C_00654C_D1MODE_PRIORITY_MARK_B              0xFFFF8000
+#define   S_00654C_D1MODE_PRIORITY_B_OFF(x)            (((x) & 0x1) << 16)
+#define   G_00654C_D1MODE_PRIORITY_B_OFF(x)            (((x) >> 16) & 0x1)
+#define   C_00654C_D1MODE_PRIORITY_B_OFF               0xFFFEFFFF
+#define   S_00654C_D1MODE_PRIORITY_B_ALWAYS_ON(x)      (((x) & 0x1) << 20)
+#define   G_00654C_D1MODE_PRIORITY_B_ALWAYS_ON(x)      (((x) >> 20) & 0x1)
+#define   C_00654C_D1MODE_PRIORITY_B_ALWAYS_ON         0xFFEFFFFF
+#define   S_00654C_D1MODE_PRIORITY_B_FORCE_MASK(x)     (((x) & 0x1) << 24)
+#define   G_00654C_D1MODE_PRIORITY_B_FORCE_MASK(x)     (((x) >> 24) & 0x1)
+#define   C_00654C_D1MODE_PRIORITY_B_FORCE_MASK        0xFEFFFFFF
+#define R_006D48_D2MODE_PRIORITY_A_CNT               0x006D48
+#define   S_006D48_D2MODE_PRIORITY_MARK_A(x)           (((x) & 0x7FFF) << 0)
+#define   G_006D48_D2MODE_PRIORITY_MARK_A(x)           (((x) >> 0) & 0x7FFF)
+#define   C_006D48_D2MODE_PRIORITY_MARK_A              0xFFFF8000
+#define   S_006D48_D2MODE_PRIORITY_A_OFF(x)            (((x) & 0x1) << 16)
+#define   G_006D48_D2MODE_PRIORITY_A_OFF(x)            (((x) >> 16) & 0x1)
+#define   C_006D48_D2MODE_PRIORITY_A_OFF               0xFFFEFFFF
+#define   S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) & 0x1) << 20)
+#define   G_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) >> 20) & 0x1)
+#define   C_006D48_D2MODE_PRIORITY_A_ALWAYS_ON         0xFFEFFFFF
+#define   S_006D48_D2MODE_PRIORITY_A_FORCE_MASK(x)     (((x) & 0x1) << 24)
+#define   G_006D48_D2MODE_PRIORITY_A_FORCE_MASK(x)     (((x) >> 24) & 0x1)
+#define   C_006D48_D2MODE_PRIORITY_A_FORCE_MASK        0xFEFFFFFF
+#define R_006D4C_D2MODE_PRIORITY_B_CNT               0x006D4C
+#define   S_006D4C_D2MODE_PRIORITY_MARK_B(x)           (((x) & 0x7FFF) << 0)
+#define   G_006D4C_D2MODE_PRIORITY_MARK_B(x)           (((x) >> 0) & 0x7FFF)
+#define   C_006D4C_D2MODE_PRIORITY_MARK_B              0xFFFF8000
+#define   S_006D4C_D2MODE_PRIORITY_B_OFF(x)            (((x) & 0x1) << 16)
+#define   G_006D4C_D2MODE_PRIORITY_B_OFF(x)            (((x) >> 16) & 0x1)
+#define   C_006D4C_D2MODE_PRIORITY_B_OFF               0xFFFEFFFF
+#define   S_006D4C_D2MODE_PRIORITY_B_ALWAYS_ON(x)      (((x) & 0x1) << 20)
+#define   G_006D4C_D2MODE_PRIORITY_B_ALWAYS_ON(x)      (((x) >> 20) & 0x1)
+#define   C_006D4C_D2MODE_PRIORITY_B_ALWAYS_ON         0xFFEFFFFF
+#define   S_006D4C_D2MODE_PRIORITY_B_FORCE_MASK(x)     (((x) & 0x1) << 24)
+#define   G_006D4C_D2MODE_PRIORITY_B_FORCE_MASK(x)     (((x) >> 24) & 0x1)
+#define   C_006D4C_D2MODE_PRIORITY_B_FORCE_MASK        0xFEFFFFFF
+
 #endif
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 4a1822a..112e811 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -398,7 +398,7 @@ void rs690_bandwidth_update(struct radeon_device *rdev)
        struct drm_display_mode *mode1 = NULL;
        struct rs690_watermark wm0;
        struct rs690_watermark wm1;
-       u32 tmp;
+       u32 tmp, d1mode_priority_a_cnt, d2mode_priority_a_cnt;
        fixed20_12 priority_mark02, priority_mark12, fill_rate;
        fixed20_12 a, b;

@@ -411,7 +411,8 @@ void rs690_bandwidth_update(struct radeon_device *rdev)
         * modes if the user specifies HIGH for displaypriority
         * option.
         */
-       if (rdev->disp_priority == 2) {
+       if ((rdev->disp_priority == 2) &&
+           ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))) {
                tmp = RREG32_MC(R_000104_MC_INIT_MISC_LAT_TIMER);
                tmp &= C_000104_MC_DISP0R_INIT_LAT;
                tmp &= C_000104_MC_DISP1R_INIT_LAT;
@@ -486,10 +487,16 @@ void rs690_bandwidth_update(struct radeon_device *rdev)
                        priority_mark12.full = 0;
                if (wm1.priority_mark_max.full > priority_mark12.full)
                        priority_mark12.full = wm1.priority_mark_max.full;
-               WREG32(R_006548_D1MODE_PRIORITY_A_CNT, 
rfixed_trunc(priority_mark02));
-               WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, 
rfixed_trunc(priority_mark02));
-               WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, 
rfixed_trunc(priority_mark12));
-               WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, 
rfixed_trunc(priority_mark12));
+               d1mode_priority_a_cnt = rfixed_trunc(priority_mark02);
+               d2mode_priority_a_cnt = rfixed_trunc(priority_mark12);
+               if (rdev->disp_priority == 2) {
+                       d1mode_priority_a_cnt |= 
S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);
+                       d2mode_priority_a_cnt |= 
S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);
+               }
+               WREG32(R_006548_D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
+               WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
+               WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
+               WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
        } else if (mode0) {
                if (rfixed_trunc(wm0.dbpp) > 64)
                        a.full = rfixed_mul(wm0.dbpp, wm0.num_line_pair);
@@ -516,8 +523,11 @@ void rs690_bandwidth_update(struct radeon_device *rdev)
                        priority_mark02.full = 0;
                if (wm0.priority_mark_max.full > priority_mark02.full)
                        priority_mark02.full = wm0.priority_mark_max.full;
-               WREG32(R_006548_D1MODE_PRIORITY_A_CNT, 
rfixed_trunc(priority_mark02));
-               WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, 
rfixed_trunc(priority_mark02));
+               d1mode_priority_a_cnt = rfixed_trunc(priority_mark02);
+               if (rdev->disp_priority == 2)
+                       d1mode_priority_a_cnt |= 
S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);
+               WREG32(R_006548_D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
+               WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
                WREG32(R_006D48_D2MODE_PRIORITY_A_CNT,
                        S_006D48_D2MODE_PRIORITY_A_OFF(1));
                WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT,
@@ -548,12 +558,15 @@ void rs690_bandwidth_update(struct radeon_device *rdev)
                        priority_mark12.full = 0;
                if (wm1.priority_mark_max.full > priority_mark12.full)
                        priority_mark12.full = wm1.priority_mark_max.full;
+               d2mode_priority_a_cnt = rfixed_trunc(priority_mark12);
+               if (rdev->disp_priority == 2)
+                       d2mode_priority_a_cnt |= 
S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);
                WREG32(R_006548_D1MODE_PRIORITY_A_CNT,
                        S_006548_D1MODE_PRIORITY_A_OFF(1));
                WREG32(R_00654C_D1MODE_PRIORITY_B_CNT,
                        S_00654C_D1MODE_PRIORITY_B_OFF(1));
-               WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, 
rfixed_trunc(priority_mark12));
-               WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, 
rfixed_trunc(priority_mark12));
+               WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
+               WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
        }
 }

diff --git a/drivers/gpu/drm/radeon/rs690d.h b/drivers/gpu/drm/radeon/rs690d.h
index 62d31e7..36e6398 100644
--- a/drivers/gpu/drm/radeon/rs690d.h
+++ b/drivers/gpu/drm/radeon/rs690d.h
@@ -182,6 +182,9 @@
 #define   S_006548_D1MODE_PRIORITY_A_OFF(x)            (((x) & 0x1) << 16)
 #define   G_006548_D1MODE_PRIORITY_A_OFF(x)            (((x) >> 16) & 0x1)
 #define   C_006548_D1MODE_PRIORITY_A_OFF               0xFFFEFFFF
+#define   S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) & 0x1) << 20)
+#define   G_006548_D1MODE_PRIORITY_A_ALWAYS_ON(x)      (((x) >> 20) & 0x1)
+#define   C_006548_D1MODE_PRIORITY_A_ALWAYS_ON         0xFFEFFFFF
 #define   S_006548_D1MODE_PRIORITY_A_FORCE_MASK(x)     (((x) & 0x1) << 24)
 #define   G_006548_D1MODE_PRIORITY_A_FORCE_MASK(x)     (((x) >> 24) & 0x1)
 #define   C_006548_D1MODE_PRIORITY_A_FORCE_MASK        0xFEFFFFFF
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 3350023..d985db9 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -926,7 +926,7 @@ void rv515_bandwidth_avivo_update(struct
radeon_device *rdev)
        struct drm_display_mode *mode1 = NULL;
        struct rv515_watermark wm0;
        struct rv515_watermark wm1;
-       u32 tmp;
+       u32 tmp, d1mode_priority_a_cnt, d2mode_priority_a_cnt;
        fixed20_12 priority_mark02, priority_mark12, fill_rate;
        fixed20_12 a, b;

@@ -994,10 +994,16 @@ void rv515_bandwidth_avivo_update(struct
radeon_device *rdev)
                        priority_mark12.full = 0;
                if (wm1.priority_mark_max.full > priority_mark12.full)
                        priority_mark12.full = wm1.priority_mark_max.full;
-               WREG32(D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
-               WREG32(D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
-               WREG32(D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
-               WREG32(D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
+               d1mode_priority_a_cnt = rfixed_trunc(priority_mark02);
+               d2mode_priority_a_cnt = rfixed_trunc(priority_mark12);
+               if (rdev->disp_priority == 2) {
+                       d1mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
+                       d2mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
+               }
+               WREG32(D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
+               WREG32(D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
+               WREG32(D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
+               WREG32(D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
        } else if (mode0) {
                if (rfixed_trunc(wm0.dbpp) > 64)
                        a.full = rfixed_div(wm0.dbpp, wm0.num_line_pair);
@@ -1024,8 +1030,11 @@ void rv515_bandwidth_avivo_update(struct
radeon_device *rdev)
                        priority_mark02.full = 0;
                if (wm0.priority_mark_max.full > priority_mark02.full)
                        priority_mark02.full = wm0.priority_mark_max.full;
-               WREG32(D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
-               WREG32(D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
+               d1mode_priority_a_cnt = rfixed_trunc(priority_mark02);
+               if (rdev->disp_priority == 2)
+                       d1mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
+               WREG32(D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
+               WREG32(D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
                WREG32(D2MODE_PRIORITY_A_CNT, MODE_PRIORITY_OFF);
                WREG32(D2MODE_PRIORITY_B_CNT, MODE_PRIORITY_OFF);
        } else {
@@ -1054,10 +1063,13 @@ void rv515_bandwidth_avivo_update(struct
radeon_device *rdev)
                        priority_mark12.full = 0;
                if (wm1.priority_mark_max.full > priority_mark12.full)
                        priority_mark12.full = wm1.priority_mark_max.full;
+               d2mode_priority_a_cnt = rfixed_trunc(priority_mark12);
+               if (rdev->disp_priority == 2)
+                       d2mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
                WREG32(D1MODE_PRIORITY_A_CNT, MODE_PRIORITY_OFF);
                WREG32(D1MODE_PRIORITY_B_CNT, MODE_PRIORITY_OFF);
-               WREG32(D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
-               WREG32(D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
+               WREG32(D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
+               WREG32(D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
        }
 }

@@ -1076,7 +1088,8 @@ void rv515_bandwidth_update(struct radeon_device *rdev)
         * modes if the user specifies HIGH for displaypriority
         * option.
         */
-       if (rdev->disp_priority == 2) {
+       if ((rdev->disp_priority == 2) &&
+           (rdev->family == CHIP_RV515)) {
                tmp = RREG32_MC(MC_MISC_LAT_TIMER);
                tmp &= ~MC_DISP1R_INIT_LAT_MASK;
                tmp &= ~MC_DISP0R_INIT_LAT_MASK;
-- 
1.5.6.3

Attachment: 0001-drm-radeon-kms-display-watermark-updates.patch
Description: application/mbox

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