[PATCH v4 04/17] drm/i915/display: Add pipe dmc registers and bits for DC Balance

[Nautiyal, Ankit K]

On 5/6/2025 8:25 PM, Mitul Golani wrote:
> 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)
>
> 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 | 46 +++++++++++++++++++
>   1 file changed, 46 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..7c4bffce4cf5 100644
> --- a/drivers/gpu/drm/i915/display/intel_dmc_regs.h
> +++ b/drivers/gpu/drm/i915/display/intel_dmc_regs.h
> @@ -117,4 +117,50 @@
>   #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

As per i915_reg.h documentation: Use lower case in hexadecimal values

Though it seems we are not following this very closely, but lets follow 
documentation for the new registers.

With above fixed:

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>


> +#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)
> +
>   #endif /* __INTEL_DMC_REGS_H__ */