From: Matt Roper <matthew.d.roper@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 2/2] drm/i915/tgl: Program MBUS_ABOX{1, 2}_CTL during display init
Date: Mon, 3 Feb 2020 17:10:32 -0800 [thread overview]
Message-ID: <20200204011032.582737-2-matthew.d.roper@intel.com> (raw)
In-Reply-To: <20200204011032.582737-1-matthew.d.roper@intel.com>
On gen11 we only needed to program MBus credits into MBUS_ABOX_CTL
during display initialization, but on gen12 we're now supposed to
program the same values into MBUS_ABOX1_CTL and MBUS_ABOX2_CTL as well.
v2:
- Program registers with rmw to preserve contents of unrelated bits.
- Switch to the new display uncore helpers.
Bspec: 49213
Bspec: 50096
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
drivers/gpu/drm/i915/display/intel_display_power.c | 4 ++++
drivers/gpu/drm/i915/i915_reg.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 529319c962e8..f638691cda6e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -4516,6 +4516,10 @@ static void icl_mbus_init(struct drm_i915_private *dev_priv)
MBUS_ABOX_BW_CREDIT(1);
intel_de_rmw(dev_priv, MBUS_ABOX_CTL, mask, val);
+ if (INTEL_GEN(dev_priv) >= 12) {
+ intel_de_rmw(dev_priv, MBUS_ABOX1_CTL, mask, val);
+ intel_de_rmw(dev_priv, MBUS_ABOX2_CTL, mask, val);
+ }
}
static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0bd431f6a011..d3df704ee099 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2865,6 +2865,8 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define MI_ARB_STATE _MMIO(0x20e4) /* 915+ only */
#define MBUS_ABOX_CTL _MMIO(0x45038)
+#define MBUS_ABOX1_CTL _MMIO(0x45048)
+#define MBUS_ABOX2_CTL _MMIO(0x4504C)
#define MBUS_ABOX_BW_CREDIT_MASK (3 << 20)
#define MBUS_ABOX_BW_CREDIT(x) ((x) << 20)
#define MBUS_ABOX_B_CREDIT_MASK (0xF << 16)
--
2.24.1
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next prev parent reply other threads:[~2020-02-04 1:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 1:10 [Intel-gfx] [PATCH 1/2] drm/i915: Program MBUS with rmw during initialization Matt Roper
2020-02-04 1:10 ` Matt Roper [this message]
2020-02-20 17:46 ` [Intel-gfx] [PATCH 2/2] drm/i915/tgl: Program MBUS_ABOX{1, 2}_CTL during display init Matt Atwood
2020-02-04 23:40 ` [Intel-gfx] ✗ Fi.CI.BAT: failure for series starting with [1/2] drm/i915: Program MBUS with rmw during initialization Patchwork
2020-02-05 0:11 ` Matt Roper
2020-02-05 0:16 ` Chris Wilson
2020-02-10 22:20 ` [Intel-gfx] ✓ Fi.CI.BAT: success for series starting with [1/2] drm/i915: Program MBUS with rmw during initialization (rev2) Patchwork
2020-02-20 21:22 ` Matt Roper
2020-02-20 17:44 ` [Intel-gfx] [PATCH 1/2] drm/i915: Program MBUS with rmw during initialization Matt Atwood
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