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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: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
This commit is contained in:
Brian Starkey 2016-10-11 15:26:04 +01:00 committed by Liviu Dudau
parent a6a7b9a207
commit a228062cb4
2 changed files with 12 additions and 0 deletions
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3
drivers/gpu/drm/arm/malidp_hw.c
View File

@ -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,

9
drivers/gpu/drm/arm/malidp_hw.h
View File

@ -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