libisp.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "libisp.h"

Include dependency graph for libisp.c:

Go to the source code of this file.

Data Structures
struct	avi_isp_offsets

Macros
#define	AVI_BASE   0x400000
#define	AVI_SIZE   0x100000
#define	AVI_MASK   (AVI_SIZE - 1)
#define	AVI_ISP_IOGET_OFFSETS   _IOR('F', 0x33, struct avi_isp_offsets)
#define	readl(_addr)   (*((volatile uint32_t *)(_addr)))
#define	writel(_val, _addr)   (*((volatile uint32_t *)(_addr)) = _val)
#define	EXPAND_AS_FUNCTION(_node)

Functions
static int	avi_isp_get_offsets_fd (int fd, struct avi_isp_offsets *off)
	This is taken from libisp. More...
static int	open_isp_fd (struct libisp_context *ctx, int fd)
	This is taken from libisp. More...
int	configure_isp (struct v4l2_device *dev)
int	isp_get_statistics_yuv (struct isp_yuv_stats_t *yuv_stats)
static void	memcpy_to_registers (unsigned long addr, const void *reg_base, size_t s)
static void	memcpy_from_registers (void *reg_base, unsigned long addr, size_t s)

Variables
static struct libisp_context	isp_ctx
static const unsigned	isp_bases []

---

Data Structure Documentation

struct avi_isp_offsets

Definition at line 17 of file libisp.c.

Data Fields
uint32_t	chain_bayer
uint32_t	chain_yuv
uint32_t	chroma
uint32_t	gamma_corrector
uint32_t	statistics_yuv

Macro Definition Documentation

#define AVI_BASE   0x400000

Definition at line 13 of file libisp.c.

Referenced by open_isp_fd().

#define AVI_ISP_IOGET_OFFSETS   _IOR('F', 0x33, struct avi_isp_offsets)

Definition at line 26 of file libisp.c.

Referenced by avi_isp_get_offsets_fd().

#define AVI_MASK   (AVI_SIZE - 1)

Definition at line 15 of file libisp.c.

Referenced by open_isp_fd().

#define AVI_SIZE   0x100000

Definition at line 14 of file libisp.c.

Referenced by open_isp_fd().

#define EXPAND_AS_FUNCTION

(

_node

)

Value:

void avi_isp_ ## _node ## _set_registers(struct libisp_context *c,     \
      struct avi_isp_ ## _node ## _regs const *regs)         \
  {                                                                      \
    memcpy_to_registers(c->offsets[_node], regs, sizeof(*regs));   \
  }                                                                      \
  \
  void avi_isp_ ## _node ## _get_registers(struct libisp_context *c,     \
      struct avi_isp_ ## _node ## _regs *regs)               \
  {                                                                      \
    memcpy_from_registers(regs, c->offsets[_node], sizeof(*regs)); \
  }

Definition at line 258 of file libisp.c.

#define readl

(

_addr

)

(*((volatile uint32_t *)(_addr)))

Definition at line 29 of file libisp.c.

Referenced by memcpy_from_registers().

#define writel	(		_val,
			_addr
	)		(*((volatile uint32_t *)(_addr)) = _val)

Definition at line 30 of file libisp.c.

Referenced by memcpy_to_registers().

Function Documentation

static int avi_isp_get_offsets_fd ( int  fd, struct avi_isp_offsets *  off  )

static

This is taken from libisp.

Original function takes the videodev name and re-opens it, causing undefined behaviour. Here we reuse the already-opened file descriptor

Definition at line 76 of file libisp.c.

References AVI_ISP_IOGET_OFFSETS.

Referenced by open_isp_fd().

Here is the caller graph for this function:

int configure_isp

(

struct v4l2_device *

dev

)

Definition at line 163 of file libisp.c.

References libisp_config::bayer, libisp_config::bayer_inter, libisp_config::chain_yuv_inter, libisp_config::chroma, libisp_config::color_correction, libisp_config::dead_pixel_correction, libisp_config::denoising, libisp_config::eecrf, libisp_config::eecrf_lut, v4l2_device::fd, libisp_config::gamma_corrector, libisp_config::gc_bv_lut, libisp_config::gc_gu_lut, libisp_config::gc_ry_lut, libisp_config::green_imbalance, libisp_config::grim_gb, libisp_config::grim_gr, isp_config, libisp_config::lens_shading_correction, libisp_config::lsc_blue_coeffs, libisp_config::lsc_green_coeffs, libisp_config::lsc_red_coeffs, open_isp_fd(), libisp_config::pedestal, libisp_config::statistics_bayer, libisp_config::statistics_yuv, libisp_config::vlformat_32to40, and libisp_config::vlformat_40to32.

Referenced by video_thread_function().

Here is the call graph for this function:

Here is the caller graph for this function:

int isp_get_statistics_yuv

(

struct isp_yuv_stats_t *

yuv_stats

)

Definition at line 201 of file libisp.c.

References isp_yuv_stats_t::ae_histogram_Y, avi_isp_statistics_yuv_ae_histogram_y_regs::ae_histogram_y, avi_isp_statistics_yuv_regs::ae_nb_valid_y, isp_yuv_stats_t::awb_nb_grey_pixels, avi_isp_statistics_yuv_regs::awb_nb_grey_pixels, isp_yuv_stats_t::awb_sum_U, avi_isp_statistics_yuv_regs::awb_sum_u, isp_yuv_stats_t::awb_sum_V, avi_isp_statistics_yuv_regs::awb_sum_v, isp_yuv_stats_t::awb_sum_Y, avi_isp_statistics_yuv_regs::awb_sum_y, libisp_context::devmem, isp_config, isp_yuv_stats_t::nb_valid_Y, and libisp_config::statistics_yuv.

Referenced by bebop_ae_awb_periodic().

Here is the caller graph for this function:

static void memcpy_from_registers ( void *  reg_base, unsigned long  addr, size_t  s  )

inlinestatic

Definition at line 244 of file libisp.c.

References readl.

static void memcpy_to_registers ( unsigned long  addr, const void *  reg_base, size_t  s  )

inlinestatic

Definition at line 230 of file libisp.c.

References writel.

static int open_isp_fd ( struct libisp_context *  ctx, int  fd  )

static

This is taken from libisp.

Original function takes the videodev name and re-opens it, causing undefined behaviour. Here we reuse the already-opened file descriptor

Definition at line 91 of file libisp.c.

References AVI_BASE, libisp_context::avi_base, avi_isp_get_offsets_fd(), AVI_MASK, AVI_SIZE, avi_isp_offsets::chain_bayer, avi_isp_offsets::chain_yuv, avi_isp_offsets::chroma, libisp_context::devmem, avi_isp_offsets::gamma_corrector, isp_bases, ISP_NODE_NR, libisp_context::offsets, and avi_isp_offsets::statistics_yuv.

Referenced by configure_isp().

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

const unsigned isp_bases[]

static

Definition at line 37 of file libisp.c.

Referenced by open_isp_fd().

struct libisp_context isp_ctx

static

Initial value:

= {
  .devmem = -1
}

Definition at line 33 of file libisp.c.