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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/msm/msm_dsc_helper.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_dsc_helper.h')
-rw-r--r-- | drivers/gpu/drm/msm/msm_dsc_helper.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_dsc_helper.h b/drivers/gpu/drm/msm/msm_dsc_helper.h new file mode 100644 index 000000000..b9049fe1e --- /dev/null +++ b/drivers/gpu/drm/msm/msm_dsc_helper.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved + * + * Helper methods for MSM-specific DSC calculations that are common between timing engine, + * DSI, and DP. + */ + +#ifndef MSM_DSC_HELPER_H_ +#define MSM_DSC_HELPER_H_ + +#include <linux/math.h> +#include <drm/display/drm_dsc_helper.h> + +/** + * msm_dsc_get_slices_per_intf() - calculate number of slices per interface + * @dsc: Pointer to drm dsc config struct + * @intf_width: interface width in pixels + * Returns: Integer representing the number of slices for the given interface + */ +static inline u32 msm_dsc_get_slices_per_intf(const struct drm_dsc_config *dsc, u32 intf_width) +{ + return DIV_ROUND_UP(intf_width, dsc->slice_width); +} + +/** + * msm_dsc_get_bytes_per_line() - calculate bytes per line + * @dsc: Pointer to drm dsc config struct + * Returns: Integer value representing bytes per line. DSI and DP need + * to perform further calculations to turn this into pclk_per_intf, + * such as dividing by different values depending on if widebus is enabled. + */ +static inline u32 msm_dsc_get_bytes_per_line(const struct drm_dsc_config *dsc) +{ + return dsc->slice_count * dsc->slice_chunk_size; +} + +#endif /* MSM_DSC_HELPER_H_ */ |