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drm/komeda: Expose bus_width to Komeda-CORE

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CHIP set bus_width according to the HW configuration, and CORE will use
it as buffer alignment.

v2: Rebase

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
james qian wang (Arm Technology China) 2019-01-22 11:12:02 +00:00 committed by Liviu Dudau
parent 55223394d5
commit 8c134d13a0
2 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
View File

@ -520,6 +520,7 @@ d71_identify(u32 __iomem *reg_base, struct komeda_chip_info *chip)
chip->arch_id = malidp_read32(reg_base, GLB_ARCH_ID);
chip->core_id = malidp_read32(reg_base, GLB_CORE_ID);
chip->core_info = malidp_read32(reg_base, GLB_CORE_INFO);
chip->bus_width = D71_BUS_WIDTH_16_BYTES;
return &d71_chip_funcs;
}

6
drivers/gpu/drm/arm/display/komeda/komeda_kms.c
View File

@ -26,10 +26,10 @@ static int komeda_gem_cma_dumb_create(struct drm_file *file,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
u32 alignment = 16; /* TODO get alignment from dev */
struct komeda_dev *mdev = dev->dev_private;
u32 pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8),
alignment);
args->pitch = ALIGN(pitch, mdev->chip.bus_width);
return drm_gem_cma_dumb_create_internal(file, dev, args);
}