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Commit a228062c authored by Brian Starkey's avatar Brian Starkey Committed by Liviu Dudau
Browse files

drm: mali-dp: Add pitch alignment check function 



Different hardware versions have different requirements when it comes to
pitch alignment. Add a function which can be used to check pitch
alignment for a device.

Signed-off-by: default avatarBrian Starkey <brian.starkey@arm.com>
Signed-off-by: default avatarLiviu Dudau <Liviu.Dudau@arm.com>
parent a6a7b9a2

drivers/gpu/drm/arm/malidp_hw.c

+3 −0
Original line number Diff line number Diff line
@@ -436,6 +436,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = { 
			},

			.input_formats = malidp500_de_formats,

			.n_input_formats = ARRAY_SIZE(malidp500_de_formats),

			.bus_align_bytes = 8,

		},

		.query_hw = malidp500_query_hw,

		.enter_config_mode = malidp500_enter_config_mode,
@@ -468,6 +469,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = { 
			},

			.input_formats = malidp550_de_formats,

			.n_input_formats = ARRAY_SIZE(malidp550_de_formats),

			.bus_align_bytes = 8,

		},

		.query_hw = malidp550_query_hw,

		.enter_config_mode = malidp550_enter_config_mode,
@@ -501,6 +503,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = { 
			},

			.input_formats = malidp550_de_formats,

			.n_input_formats = ARRAY_SIZE(malidp550_de_formats),

			.bus_align_bytes = 16,

		},

		.query_hw = malidp650_query_hw,

		.enter_config_mode = malidp550_enter_config_mode,

drivers/gpu/drm/arm/malidp_hw.h

+9 −0
Original line number Diff line number Diff line
@@ -88,6 +88,9 @@ struct malidp_hw_regmap { 
	/* list of supported input formats for each layer */

	const struct malidp_input_format *input_formats;

	const u8 n_input_formats;



	/* pitch alignment requirement in bytes */

	const u8 bus_align_bytes;

};



struct malidp_hw_device {
@@ -229,6 +232,12 @@ void malidp_se_irq_fini(struct drm_device *drm); 
u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,

			   u8 layer_id, u32 format);



static inline bool malidp_hw_pitch_valid(struct malidp_hw_device *hwdev,

					 unsigned int pitch)

{

	return !(pitch & (hwdev->map.bus_align_bytes - 1));

}



/*

 * background color components are defined as 12bits values,

 * they will be shifted right when stored on hardware that