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authorBrian Starkey <brian.starkey@arm.com>2016-10-11 15:26:04 +0100
committerLiviu Dudau <Liviu.Dudau@arm.com>2016-11-04 17:08:06 +0000
commita228062cb4e43e0f94bf48107338757d4d5857b9 (patch)
treecbd50ab990fbc0b821d5e79dc78920904ff20097 /drivers/gpu/drm
parenta6a7b9a207d46c6a32ecd1ed3ddd877640f90df4 (diff)
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>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/arm/malidp_hw.c3
-rw-r--r--drivers/gpu/drm/arm/malidp_hw.h9
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
index be815d0cc772..18c476605c0c 100644
--- a/drivers/gpu/drm/arm/malidp_hw.c
+++ b/drivers/gpu/drm/arm/malidp_hw.c
@@ -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,
diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h
index 141743e9f3a6..087e1202db3d 100644
--- a/drivers/gpu/drm/arm/malidp_hw.h
+++ b/drivers/gpu/drm/arm/malidp_hw.h
@@ -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