static int jpeg_drv_dec_init(void)
{
int retValue;
spin_lock(&jpeg_dec_lock);
if(dec_status != 0)
{
JPEG_WRN("JPEG Decoder is busy\n");
retValue = -EBUSY;
}
else
{
dec_status = 1;
retValue = 0;
}
spin_unlock(&jpeg_dec_lock);
if(retValue == 0)
{
jpeg_drv_dec_power_on();
jpeg_drv_dec_reset();
}
return retValue;
}
/* workaround for jpeg odd read operation at cg gating state */
void jpeg_drv_dec_verify_state_and_reset(void)
{
unsigned int temp, value;
IMG_REG_WRITE(0x00, REG_ADDR_JPGDEC_RESET);
IMG_REG_WRITE(0x00, REG_ADDR_JPGDEC_RESET);
IMG_REG_WRITE(0x10, REG_ADDR_JPGDEC_RESET);
IMG_REG_WRITE(0x10, REG_ADDR_JPGDEC_RESET);
IMG_REG_READ(temp, REG_ADDR_JPGDEC_ULTRA_THRES);
IMG_REG_READ(value, REG_ADDR_JPGDEC_FILE_ADDR);
/* issue happen, need to do 1 read at cg gating state */
if (value == 0xFFFFFFFF) {
JPEG_MSG("JPGDEC APB R/W issue found, start to do recovery!\n");
jpeg_drv_dec_power_off();
IMG_REG_READ(value, REG_ADDR_JPGDEC_ULTRA_THRES);
jpeg_drv_dec_power_on();
}
_jpeg_dec_int_status = 0;
_jpeg_dec_mode = 0;
}