diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h new file mode 100644 index 000000000000..5cceb1ecb8e0 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h @@ -0,0 +1,139 @@ +/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _DPU_HW_CDM_H +#define _DPU_HW_CDM_H + +#include "dpu_hw_mdss.h" +#include "dpu_hw_top.h" +#include "dpu_hw_blk.h" + +struct dpu_hw_cdm; + +struct dpu_hw_cdm_cfg { + u32 output_width; + u32 output_height; + u32 output_bit_depth; + u32 h_cdwn_type; + u32 v_cdwn_type; + const struct dpu_format *output_fmt; + u32 output_type; + int flags; +}; + +enum dpu_hw_cdwn_type { + CDM_CDWN_DISABLE, + CDM_CDWN_PIXEL_DROP, + CDM_CDWN_AVG, + CDM_CDWN_COSITE, + CDM_CDWN_OFFSITE, +}; + +enum dpu_hw_cdwn_output_type { + CDM_CDWN_OUTPUT_HDMI, + CDM_CDWN_OUTPUT_WB, +}; + +enum dpu_hw_cdwn_output_bit_depth { + CDM_CDWN_OUTPUT_8BIT, + CDM_CDWN_OUTPUT_10BIT, +}; + +/** + * struct dpu_hw_cdm_ops : Interface to the chroma down Hw driver functions + * Assumption is these functions will be called after + * clocks are enabled + * @setup_csc: Programs the csc matrix + * @setup_cdwn: Sets up the chroma down sub module + * @enable: Enables the output to interface and programs the + * output packer + * @disable: Puts the cdm in bypass mode + */ +struct dpu_hw_cdm_ops { + /** + * Programs the CSC matrix for conversion from RGB space to YUV space, + * it is optional to call this function as this matrix is automatically + * set during initialization, user should call this if it wants + * to program a different matrix than default matrix. + * @cdm: Pointer to the chroma down context structure + * @data Pointer to CSC configuration data + * return: 0 if success; error code otherwise + */ + int (*setup_csc_data)(struct dpu_hw_cdm *cdm, + struct dpu_csc_cfg *data); + + /** + * Programs the Chroma downsample part. + * @cdm Pointer to chroma down context + */ + int (*setup_cdwn)(struct dpu_hw_cdm *cdm, + struct dpu_hw_cdm_cfg *cfg); + + /** + * Enable the CDM module + * @cdm Pointer to chroma down context + */ + int (*enable)(struct dpu_hw_cdm *cdm, + struct dpu_hw_cdm_cfg *cfg); + + /** + * Disable the CDM module + * @cdm Pointer to chroma down context + */ + void (*disable)(struct dpu_hw_cdm *cdm); +}; + +struct dpu_hw_cdm { + struct dpu_hw_blk base; + struct dpu_hw_blk_reg_map hw; + + /* chroma down */ + const struct dpu_cdm_cfg *caps; + enum dpu_cdm idx; + + /* mdp top hw driver */ + struct dpu_hw_mdp *hw_mdp; + + /* ops */ + struct dpu_hw_cdm_ops ops; +}; + +/** + * dpu_hw_cdm - convert base object dpu_hw_base to container + * @hw: Pointer to base hardware block + * return: Pointer to hardware block container + */ +static inline struct dpu_hw_cdm *to_dpu_hw_cdm(struct dpu_hw_blk *hw) +{ + return container_of(hw, struct dpu_hw_cdm, base); +} + +/** + * dpu_hw_cdm_init - initializes the cdm hw driver object. + * should be called once before accessing every cdm. + * @idx: cdm index for which driver object is required + * @addr: mapped register io address of MDP + * @m : pointer to mdss catalog data + * @hw_mdp: pointer to mdp top hw driver object + */ +struct dpu_hw_cdm *dpu_hw_cdm_init(enum dpu_cdm idx, + void __iomem *addr, + struct dpu_mdss_cfg *m, + struct dpu_hw_mdp *hw_mdp); + +/** + * dpu_hw_cdm_destroy - destroys CDM driver context + * @cdm: pointer to CDM driver context + */ +void dpu_hw_cdm_destroy(struct dpu_hw_cdm *cdm); + +#endif /*_DPU_HW_CDM_H */ |