39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* 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_ */
|