| /* Copyright (c) 2015-2016, 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 _SDE_HW_PINGPONG_H |
| #define _SDE_HW_PINGPONG_H |
| |
| struct sde_hw_pingpong; |
| |
| struct sde_hw_tear_check { |
| /* |
| * This is ratio of MDP VSYNC clk freq(Hz) to |
| * refresh rate divided by no of lines |
| */ |
| u32 vsync_count; |
| u32 sync_cfg_height; |
| u32 vsync_init_val; |
| u32 sync_threshold_start; |
| u32 sync_threshold_continue; |
| u32 start_pos; |
| u32 rd_ptr_irq; |
| u8 hw_vsync_mode; |
| }; |
| |
| struct sde_hw_autorefresh { |
| bool enable; |
| u32 frame_count; |
| }; |
| |
| struct sde_hw_pp_vsync_info { |
| u32 init_val; /* value of rd pointer at vsync edge */ |
| u32 vsync_count; /* mdp clocks to complete one line */ |
| u32 line_count; /* current line count */ |
| }; |
| |
| struct sde_hw_dsc_cfg { |
| u8 enable; |
| }; |
| |
| /** |
| * |
| * struct sde_hw_pingpong_ops : Interface to the pingpong Hw driver functions |
| * Assumption is these functions will be called after clocks are enabled |
| * @setup_tearcheck : |
| * @enable_tearcheck : |
| * @get_vsync_info : |
| * @setup_autorefresh : |
| * #setup_dsc : |
| */ |
| struct sde_hw_pingpong_ops { |
| /** |
| * enables vysnc generation and sets up init value of |
| * read pointer and programs the tear check cofiguration |
| */ |
| int (*setup_tearcheck)(struct sde_hw_pingpong *pp, |
| struct sde_hw_tear_check *cfg); |
| |
| /** |
| * enables tear check block |
| */ |
| int (*enable_tearcheck)(struct sde_hw_pingpong *pp, |
| bool enable); |
| |
| /** |
| * provides the programmed and current |
| * line_count |
| */ |
| int (*get_vsync_info)(struct sde_hw_pingpong *pp, |
| struct sde_hw_pp_vsync_info *info); |
| |
| /** |
| * configure and enable the autorefresh config |
| */ |
| int (*setup_autorefresh)(struct sde_hw_pingpong *pp, |
| struct sde_hw_autorefresh *cfg); |
| |
| /** |
| * Program the dsc compression block |
| */ |
| int (*setup_dsc)(struct sde_hw_pingpong *pp, |
| struct sde_hw_dsc_cfg *cfg); |
| }; |
| |
| struct sde_hw_pingpong { |
| /* base */ |
| struct sde_hw_blk_reg_map hw; |
| |
| /* pingpong */ |
| enum sde_pingpong idx; |
| const struct sde_pingpong_cfg *pingpong_hw_cap; |
| |
| /* ops */ |
| struct sde_hw_pingpong_ops ops; |
| }; |
| |
| /** |
| * sde_hw_pingpong_init - initializes the pingpong driver for the passed |
| * pingpong idx. |
| * @idx: Pingpong index for which driver object is required |
| * @addr: Mapped register io address of MDP |
| * @m: Pointer to mdss catalog data |
| * Returns: Error code or allocated sde_hw_pingpong context |
| */ |
| struct sde_hw_pingpong *sde_hw_pingpong_init(enum sde_pingpong idx, |
| void __iomem *addr, |
| struct sde_mdss_cfg *m); |
| |
| /** |
| * sde_hw_pingpong_destroy - destroys pingpong driver context |
| * should be called to free the context |
| * @pp: Pointer to PP driver context returned by sde_hw_pingpong_init |
| */ |
| void sde_hw_pingpong_destroy(struct sde_hw_pingpong *pp); |
| |
| #endif /*_SDE_HW_PINGPONG_H */ |