ipu-v3-pre.h
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/*
* Copyright (C) 2014-2015 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __LINUX_IPU_V3_PRE_H_
#define __LINUX_IPU_V3_PRE_H_
#define IPU_PRE_MAX_WIDTH 1920
#define IPU_PRE_MAX_BPP 4
#define IPU_PRE_SMALL_LINE 9 /* to workaround errata ERR009624*/
struct ipu_rect {
int left;
int top;
int width;
int height;
};
struct ipu_pre_context {
bool repeat;
bool vflip;
bool handshake_en;
bool hsk_abort_en;
unsigned int hsk_line_num;
bool sdw_update;
unsigned int block_size;
unsigned int interlaced;
unsigned int prefetch_mode;
unsigned long cur_buf;
unsigned long next_buf;
unsigned int tile_fmt;
unsigned int read_burst;
unsigned int prefetch_input_bpp;
unsigned int prefetch_input_pixel_fmt;
unsigned int prefetch_shift_offset;
unsigned int prefetch_shift_width;
bool shift_bypass;
bool field_inverse;
bool tpr_coor_offset_en;
/* the output of prefetch is
* also the input of store
*/
struct ipu_rect prefetch_output_size;
unsigned int prefetch_input_active_width;
unsigned int prefetch_input_width;
unsigned int prefetch_input_height;
unsigned int store_pitch;
int interlace_offset;
bool store_en;
unsigned int write_burst;
unsigned int store_output_bpp;
unsigned int sec_buf_off;
unsigned int trd_buf_off;
/* return for IPU fb caller */
unsigned long store_addr;
};
/*
* In order to workaround the PRE SoC bug recorded by errata ERR009624,
* the software cannot write the PRE_CTRL register when the PRE writes
* the PRE_CTRL register automatically to set the ENABLE bit(bit0) to 1
* in the PRE repeat mode.
* The software mechanism to set the PRE_CTRL register is different for
* PRE Y resolution higher than 9 lines and lower or equal to 9 lines.
* Use this helper to check the Y resolution.
*/
static inline bool ipu_pre_yres_is_small(unsigned int yres)
{
return yres <= IPU_PRE_SMALL_LINE;
}
#ifdef CONFIG_MXC_IPU_V3_PRE
int ipu_pre_alloc(int ipu_id, ipu_channel_t ipu_ch);
void ipu_pre_free(unsigned int *id);
unsigned long ipu_pre_alloc_double_buffer(unsigned int id, unsigned int size);
void ipu_pre_free_double_buffer(unsigned int id);
int ipu_pre_config(int id, struct ipu_pre_context *config);
int ipu_pre_set_ctrl(unsigned int id, struct ipu_pre_context *config);
int ipu_pre_enable(int id);
void ipu_pre_disable(int id);
int ipu_pre_set_fb_buffer(int id, bool resolve,
unsigned long fb_paddr,
unsigned int y_res,
unsigned int x_crop,
unsigned int y_crop,
unsigned int sec_buf_off,
unsigned int trd_buf_off);
int ipu_pre_sdw_update(int id);
#else
int ipu_pre_alloc(int ipu_id, ipu_channel_t channel)
{
return -ENODEV;
}
void ipu_pre_free(unsigned int *id)
{
}
unsigned long ipu_pre_alloc_double_buffer(unsigned int id, unsigned int size)
{
return -ENODEV;
}
void ipu_pre_free_double_buffer(unsigned int id)
{
}
int ipu_pre_config(int id, struct ipu_pre_context *config)
{
return -ENODEV;
}
int ipu_pre_set_ctrl(unsigned int id, struct ipu_pre_context *config)
{
return -ENODEV;
}
int ipu_pre_enable(int id)
{
return -ENODEV;
}
void ipu_pre_disable(int id)
{
return;
}
int ipu_pre_set_fb_buffer(int id, bool resolve,
unsigned long fb_paddr,
unsigned int y_res,
unsigned int x_crop,
unsigned int y_crop,
unsigned int sec_buf_off,
unsigned int trd_buf_off)
{
return -ENODEV;
}
int ipu_pre_sdw_update(int id)
{
return -ENODEV;
}
#endif
#endif /* __LINUX_IPU_V3_PRE_H_ */