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drm/i915/display: Program DBUF_CTL tracker state service

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This sequence is not part of "Sequences to Initialize Display" but
as noted in the MBus page the DBUF_CTL.Tracker_state_service needs
to be set to 8.

BSpec: 49213
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201019173906.18892-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2020-10-19 10:39:06 -07:00
parent 0af0b841c6
commit 359d0eff84
2 changed files with 23 additions and 5 deletions
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14
drivers/gpu/drm/i915/display/intel_display_power.c
View File

@ -4771,6 +4771,17 @@ static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
gen9_dbuf_slices_update(dev_priv, 0);
}
static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
{
const int num_slices = INTEL_INFO(dev_priv)->num_supported_dbuf_slices;
enum dbuf_slice slice;
for (slice = DBUF_S1; slice < (DBUF_S1 + num_slices); slice++)
intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
DBUF_TRACKER_STATE_SERVICE_MASK,
DBUF_TRACKER_STATE_SERVICE(8));
}
static void icl_mbus_init(struct drm_i915_private *dev_priv)
{
unsigned long abox_regs = INTEL_INFO(dev_priv)->abox_mask;
@ -5340,6 +5351,9 @@ static void icl_display_core_init(struct drm_i915_private *dev_priv,
/* 4. Enable CDCLK. */
intel_cdclk_init_hw(dev_priv);
if (INTEL_GEN(dev_priv) >= 12)
gen12_dbuf_slices_config(dev_priv);
/* 5. Enable DBUF. */
gen9_dbuf_enable(dev_priv);

14
drivers/gpu/drm/i915/i915_reg.h
View File

@ -7927,11 +7927,15 @@ enum {
#define DISP_ARB_CTL2 _MMIO(0x45004)
#define DISP_DATA_PARTITION_5_6 (1 << 6)
#define DISP_IPC_ENABLE (1 << 3)
#define _DBUF_CTL_S1 0x45008
#define _DBUF_CTL_S2 0x44FE8
#define DBUF_CTL_S(slice) _MMIO(_PICK_EVEN(slice, _DBUF_CTL_S1, _DBUF_CTL_S2))
#define DBUF_POWER_REQUEST (1 << 31)
#define DBUF_POWER_STATE (1 << 30)
#define _DBUF_CTL_S1 0x45008
#define _DBUF_CTL_S2 0x44FE8
#define DBUF_CTL_S(slice) _MMIO(_PICK_EVEN(slice, _DBUF_CTL_S1, _DBUF_CTL_S2))
#define DBUF_POWER_REQUEST REG_BIT(31)
#define DBUF_POWER_STATE REG_BIT(30)
#define DBUF_TRACKER_STATE_SERVICE_MASK REG_GENMASK(23, 19)
#define DBUF_TRACKER_STATE_SERVICE(x) REG_FIELD_PREP(DBUF_TRACKER_STATE_SERVICE_MASK, x)
#define GEN7_MSG_CTL _MMIO(0x45010)
#define WAIT_FOR_PCH_RESET_ACK (1 << 1)
#define WAIT_FOR_PCH_FLR_ACK (1 << 0)