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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include <board.h>
#include <utility/trace.h>
#include <utility/video.h>
#include "isi.h"
#if defined (BOARD_ISI_V200)
//-----------------------------------------------------------------------------
/// Enable ISI
//-----------------------------------------------------------------------------
void ISI_Enable(void)
{
AT91C_BASE_ISI->ISI_CTRL |= AT91C_ISI_EN_1;
while( (AT91C_BASE_ISI->ISI_SR & AT91C_ISI_EN_1)!=AT91C_ISI_EN_1);
AT91C_BASE_ISI->ISI_DMACHER |= AT91C_ISI_P_CH_EN_1;
}
//-----------------------------------------------------------------------------
/// Disable ISI
//-----------------------------------------------------------------------------
void ISI_Disable(void)
{
AT91C_BASE_ISI->ISI_CTRL |= AT91C_ISI_DIS_1;
AT91C_BASE_ISI->ISI_DMACHDR &= ~AT91C_ISI_P_CH_DIS_1;
}
//-----------------------------------------------------------------------------
/// Enable ISI interrupt
/// \param flag of interrupt to enable
//-----------------------------------------------------------------------------
void ISI_EnableInterrupt(unsigned int flag)
{
AT91C_BASE_ISI->ISI_IER = flag;
}
//-----------------------------------------------------------------------------
/// Disable ISI interrupt
/// \param flag of interrupt to disable
//-----------------------------------------------------------------------------
void ISI_DisableInterrupt(unsigned int flag)
{
AT91C_BASE_ISI->ISI_IDR = flag;
}
//-----------------------------------------------------------------------------
/// Return ISI status register
/// \return Status of ISI register
//-----------------------------------------------------------------------------
unsigned int ISI_StatusRegister(void)
{
return(AT91C_BASE_ISI->ISI_SR);
}
//-----------------------------------------------------------------------------
/// Enable Codec path for capture next frame
//-----------------------------------------------------------------------------
void ISI_CodecPathFull(void)
{
// The codec path is enabled and the next frame is captured.
// Both codec and preview datapaths are working simultaneously
AT91C_BASE_ISI->ISI_CTRL |= AT91C_ISI_CDC_1;
AT91C_BASE_ISI->ISI_CFG1 |= AT91C_ISI_FULL;
}
//-----------------------------------------------------------------------------
/// Set frame rate
/// \param frate frame rate capture
/// \return
//-----------------------------------------------------------------------------
void ISI_SetFrame(unsigned int frate)
{
if( frate > 7 ) {
TRACE_ERROR("FRate too big\n\r");
frate = 7;
}
AT91C_BASE_ISI->ISI_CFG1 |= ((frate<<8) & AT91C_ISI_FRATE);
}
//-----------------------------------------------------------------------------
/// Get the number of byte per pixels
/// \param bmpRgb BMP type can be YUV or RGB
/// \return Number of byte for one pixel
//-----------------------------------------------------------------------------
unsigned char ISI_BytesForOnePixel(unsigned char bmpRgb)
{
unsigned char nbByte_Pixel;
if (bmpRgb == RGB) {
if ((AT91C_BASE_ISI->ISI_CFG2 & AT91C_ISI_RGB_MODE) == AT91C_ISI_RGB_MODE_RGB_565){
// RGB: 5:6:5 16bits/pixels
nbByte_Pixel = 2;
}
else {
// RGB: 8:8:8 24bits/pixels
nbByte_Pixel = 3;
}
}
else {
// YUV: 2 pixels for 4 bytes
nbByte_Pixel = 2;
}
return nbByte_Pixel;
}
//-----------------------------------------------------------------------------
/// Reset ISI
//-----------------------------------------------------------------------------
void ISI_Reset(void)
{
unsigned int timeout=0;
// Resets the image sensor interface.
// Finish capturing the current frame and then shut down the module.
AT91C_BASE_ISI->ISI_CTRL = AT91C_ISI_SRST_1 | AT91C_ISI_DIS_1;
// wait Software reset has completed successfully.
while( (!(volatile int)AT91C_BASE_ISI->ISI_SR & AT91C_ISI_SRST)
&& (timeout < 0x5000) ){
timeout++;
}
if( timeout == 0x5000 ) {
TRACE_ERROR("ISI-Reset timeout\n\r");
}
}
//-----------------------------------------------------------------------------
/// ISI initialize
/// \param pVideo structure of video driver
//-----------------------------------------------------------------------------
void ISI_Init(AT91PS_VIDEO pVideo)
{
ISI_Reset();
// AT91C_ISI_HSYNC_POL Horizontal synchronisation polarity
// AT91C_ISI_VSYNC_POL Vertical synchronisation polarity
// AT91C_ISI_PIXCLK_POL Pixel Clock Polarity
// SLD pixel clock periods to wait before the beginning of a line.
// SFD lines are skipped at the beginning of the frame.
AT91C_BASE_ISI->ISI_CFG1 |= ((pVideo->Hblank << 16) & AT91C_ISI_SLD)
+ ((pVideo->Vblank << 24) & AT91C_ISI_SFD);
TRACE_DEBUG("ISI_CFG1=0x%X\n\r", AT91C_BASE_ISI->ISI_CFG1);
// IM_VSIZE: Vertical size of the Image sensor [0..2047]
// Vertical size = IM_VSIZE + 1
// IM_HSIZE: Horizontal size of the Image sensor [0..2047]
// Horizontal size = IM_HSIZE + 1
// YCC_SWAP : YCC image data
AT91C_BASE_ISI->ISI_CFG2 = ((pVideo->codec_vsize-1) & AT91C_ISI_IM_VSIZE)
+ (((pVideo->codec_hsize-1) << 16) & AT91C_ISI_IM_HSIZE)
+ AT91C_ISI_YCC_SWAP_YCC_MODE2;
if (pVideo->rgb_or_yuv == RGB) {
AT91C_BASE_ISI->ISI_CFG2 |= AT91C_ISI_COL_SPACE | AT91C_ISI_RGB_MODE_RGB_565
| AT91C_ISI_RGB_CFG_RGB_DEFAULT;
}
else {
// AT91C_BASE_HISI->ISI_CFG2 &= ~AT91C_ISI_COL_SPACE;
}
TRACE_DEBUG("ISI_CFG2=0x%X\n\r", AT91C_BASE_ISI->ISI_CFG2);
// Vertical Preview size = PREV_VSIZE + 1 (480 max only in RGB mode).
// Horizontal Preview size = PREV_HSIZE + 1 (640 max only in RGB mode).
#if defined (AT91C_ID_LCDC)
if( (pVideo->lcd_vsize > 480) || (pVideo->lcd_hsize > 640)) {
TRACE_ERROR("Size LCD bad define\n\r");
AT91C_BASE_ISI->ISI_PSIZE = ((BOARD_LCD_HEIGHT-1) & AT91C_ISI_PREV_VSIZE)
+ (((BOARD_LCD_WIDTH-1) << 16) & AT91C_ISI_PREV_HSIZE);
}
else {
AT91C_BASE_ISI->ISI_PSIZE = ((pVideo->lcd_vsize -1) & AT91C_ISI_PREV_VSIZE)
+ (((pVideo->lcd_hsize -1) << 16) & AT91C_ISI_PREV_HSIZE);
}
#endif
// DEC_FACTOR is 8-bit width, range is from 16 to 255.
// Values from 0 to 16 do not perform any decimation.
AT91C_BASE_ISI->ISI_PDECF = (16 * pVideo->codec_hsize) / pVideo->lcd_hsize;
TRACE_DEBUG("codec_hsize: %d\n\r", pVideo->codec_hsize);
TRACE_DEBUG("lcd_hsize: %d\n\r", pVideo->lcd_hsize);
TRACE_DEBUG("ISI_PDECF: %d\n\r", AT91C_BASE_ISI->ISI_PDECF);
if( AT91C_BASE_ISI->ISI_PDECF <16) {
TRACE_ERROR("ISI_PDECF, forbidden value: %d\n\r", AT91C_BASE_ISI->ISI_PDECF);
AT91C_BASE_ISI->ISI_PDECF = 16;
}
AT91C_BASE_ISI->ISI_DMAPDSCR = pVideo->Isi_fbd_base;
AT91C_BASE_ISI->ISI_DMAPCTRL = AT91C_ISI_P_FETCH_ENABLE;
AT91C_BASE_ISI->ISI_DMAPADDR = pVideo->lcd_fb_addr;
// C0: Color Space Conversion Matrix Coefficient C0
// C1: Color Space Conversion Matrix Coefficient C1
// C2: Color Space Conversion Matrix Coefficient C2
// C3: Color Space Conversion Matrix Coefficient C3
AT91C_BASE_ISI->ISI_Y2RSET0 = ( (0x95<< 0) & AT91C_ISI_Y2R_C0)
+ ( (0xFF<< 8) & AT91C_ISI_Y2R_C1)
+ ( (0x68<<16) & AT91C_ISI_Y2R_C2)
+ ( (0x32<<24) & AT91C_ISI_Y2R_C3);
// C4: Color Space Conversion Matrix coefficient C4
// Yoff: Color Space Conversion Luminance 128 offset
// Croff: Color Space Conversion Red Chrominance 16 offset
// Cboff: Color Space Conversion Blue Chrominance 16 offset
AT91C_BASE_ISI->ISI_Y2RSET1 = ( (0xCC<< 0) & AT91C_ISI_Y2R_C4)
+ ( AT91C_ISI_Y2R_YOFF_128)
+ ( AT91C_ISI_Y2R_CROFF_16)
+ ( AT91C_ISI_Y2R_CBOFF_16);
}
#endif // defined (BOARD_ISI_V200)