[PATCH v5 03/17] drm/i915/display: Add pipe dmc registers and bits for DC Balance

Mitul Golani mitulkumar.ajitkumar.golani at intel.com
Tue May 13 05:16:46 UTC 2025


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Add pipe dmc registers and  access bits for DC Balance params
configuration and enablement.

--v2:
- Separate register definitions for transcoder and
pipe dmc. (Ankit)
- Use MMIO pipe macros instead of transcoder ones. (Ankit)
- Remove dev_priv use. (Jani, Nikula)

--v3:
- Add all register address, from capital alphabet to small. (Ankit)
- Add EVT CTL registers.
- Add co-author tag.
- Add event flag for Triggering DC Balance.

Co-authored-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dmc_regs.h | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc_regs.h b/drivers/gpu/drm/i915/display/intel_dmc_regs.h
index e16ea3f16ed8..137816cb9e9d 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc_regs.h
@@ -75,6 +75,7 @@
 #define DMC_EVT_CTL_EVENT_ID_MASK	REG_GENMASK(15, 8)
 #define DMC_EVT_CTL_EVENT_ID_FALSE	0x01
 #define DMC_EVT_CTL_EVENT_ID_VBLANK_A	0x32 /* main DMC */
+#define DMC_EVT_CTL_EVENT_ID_ADAPTIVE_DC_BALANCE_TRIGGER	0x3D
 /* An event handler scheduled to run at a 1 kHz frequency. */
 #define DMC_EVT_CTL_EVENT_ID_CLK_MSEC	0xbf
 
@@ -117,4 +118,55 @@
 #define  DMC_WAKELOCK_CTL_REQ	 REG_BIT(31)
 #define  DMC_WAKELOCK_CTL_ACK	 REG_BIT(15)
 
+#define _PIPEDMC_DCB_CTL_A			0x5f1a0
+#define _PIPEDMC_DCB_CTL_B			0x5f5a0
+#define PIPEDMC_DCB_CTL(pipe)			_MMIO_PIPE((pipe), _PIPEDMC_DCB_CTL_A,\
+							   _PIPEDMC_DCB_CTL_B)
+#define PIPEDMC_ADAPTIVE_DCB_ENABLE		REG_BIT(31)
+
+#define _PIPEDMC_DCB_VBLANK_A			0x5f1bc
+#define _PIPEDMC_DCB_VBLANK_B			0x5f5bc
+#define PIPEDMC_DCB_VBLANK(pipe)		_MMIO_PIPE((pipe), _PIPEDMC_DCB_VBLANK_A,\
+							   _PIPEDMC_DCB_VBLANK_B)
+
+#define _PIPEDMC_DCB_SLOPE_A			0x5f1b8
+#define _PIPEDMC_DCB_SLOPE_B			0x5f5b8
+#define PIPEDMC_DCB_SLOPE(pipe)			_MMIO_PIPE((pipe), _PIPEDMC_DCB_SLOPE_A,\
+							   _PIPEDMC_DCB_SLOPE_B)
+
+#define _PIPEDMC_DCB_GUARDBAND_A		0x5f1b4
+#define _PIPEDMC_DCB_GUARDBAND_B		0x5f5b4
+#define PIPEDMC_DCB_GUARDBAND(pipe)		_MMIO_PIPE((pipe), _PIPEDMC_DCB_GUARDBAND_A,\
+							   _PIPEDMC_DCB_GUARDBAND_B)
+
+#define _PIPEDMC_DCB_MAX_INCREASE_A		0x5f1ac
+#define _PIPEDMC_DCB_MAX_INCREASE_B		0x5f5ac
+#define PIPEDMC_DCB_MAX_INCREASE(pipe)		_MMIO_PIPE((pipe), _PIPEDMC_DCB_MAX_INCREASE_A,\
+							   _PIPEDMC_DCB_MAX_INCREASE_B)
+
+#define _PIPEDMC_DCB_MAX_DECREASE_A		0x5f1b0
+#define _PIPEDMC_DCB_MAX_DECREASE_B		0x5f5b0
+#define PIPEDMC_DCB_MAX_DECREASE(pipe)		_MMIO_PIPE((pipe), _PIPEDMC_DCB_MAX_DECREASE_A,\
+							   _PIPEDMC_DCB_MAX_DECREASE_B)
+
+#define _PIPEDMC_DCB_VMIN_A			0x5f1a4
+#define _PIPEDMC_DCB_VMIN_B			0x5f5a4
+#define PIPEDMC_DCB_VMIN(pipe)			_MMIO_PIPE((pipe), _PIPEDMC_DCB_VMIN_A,\
+							   _PIPEDMC_DCB_VMIN_B)
+
+#define _PIPEDMC_DCB_VMAX_A			0x5f1a8
+#define _PIPEDMC_DCB_VMAX_B			0x5f5a8
+#define PIPEDMC_DCB_VMAX(pipe)			_MMIO_PIPE((pipe), _PIPEDMC_DCB_VMAX_A,\
+							   _PIPEDMC_DCB_VMAX_B)
+
+#define _PIPEDMC_DCB_DEBUG_A			0x5f1c0
+#define _PIPEDMC_DCB_DEBUG_B			0x5f5c0
+#define PIPEDMC_DCB_DEBUG(pipe)			_MMIO_PIPE(pipe, _PIPEDMC_DCB_DEBUG_A,\
+							   _PIPEDMC_DCB_DEBUG_B)
+
+#define _PIPEDMC_EVT_CTL_3_A			0x5f040
+#define _PIPEDMC_EVT_CTL_3_B			0x5f440
+#define PIPEDMC_EVT_CTL_3(pipe)			_MMIO_PIPE(pipe, _PIPEDMC_EVT_CTL_3_A,\
+							   _PIPEDMC_EVT_CTL_3_B)
+
 #endif /* __INTEL_DMC_REGS_H__ */
-- 
2.48.1



More information about the Intel-gfx mailing list