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/*
* Copyright (C) 2012 Spreadtrum Communications Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#include <linux/uaccess.h>
#include <linux/sprd_mm.h>
#include <video/sprd_isp.h>
#include <linux/delay.h>
#include "isp_reg.h"
#include "isp_drv.h"
#define ISP_TIME_OUT_MAX (500)
int32_t isp_get_int_num(struct isp_node *node)
{
node->irq_val1 = REG_RD(ISP_INT_INT0);
node->irq_val2 = REG_RD(ISP_INT_INT1);
node->irq_val3 = REG_RD(ISP_INT_INT2);
if ((0 == node->irq_val1)
&& (0 == node->irq_val2)
&& (0 == node->irq_val3)) {
printk("isp_get_int_num: int error.\n");
return -1;
}
REG_WR(ISP_INT_CLR0, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR1, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR2, ISP_IRQ_HW_MASK);
return 0;
}
void isp_clr_int(void)
{
REG_WR(ISP_INT_CLR0, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR1, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR2, ISP_IRQ_HW_MASK);
}
void isp_en_irq(uint32_t irq_mode)
{
REG_WR(ISP_INT_CLR0, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR1, ISP_IRQ_HW_MASK);
REG_WR(ISP_INT_CLR2, ISP_IRQ_HW_MASK);
switch(irq_mode) {
case ISP_INT_VIDEO_MODE:
REG_WR(ISP_INT_EN0, ISP_INT_DCAMERA_SOF | ISP_INT_AEM_DONE | ISP_INT_AFM_RGB_DONE | ISP_INT_AFL_DONE | ISP_INT_AEM2_DONE \
| ISP_INT_BINNING_DONE);
REG_WR(ISP_INT_EN1, 0);
REG_WR(ISP_INT_EN2, 0);
break;
case ISP_INT_CAPTURE_MODE:
REG_WR(ISP_INT_EN0, ISP_INT_STORE_DONE);
REG_WR(ISP_INT_EN1, 0);
REG_WR(ISP_INT_EN2, 0);
break;
case ISP_INT_CLEAR_MODE:
REG_WR(ISP_INT_EN0, 0);
REG_WR(ISP_INT_EN1, 0);
REG_WR(ISP_INT_EN2, 0);
break;
default:
printk("isp_en_irq: irq_mode error.\n");
break;
}
}
int32_t isp_axi_bus_waiting(void)
{
int32_t ret = 0;
uint32_t reg_value = 0;
uint32_t time_out_cnt = 0;
REG_OWR(ISP_AXI_ITI2AXIM_CTRL, BIT_18);
reg_value = REG_RD(ISP_INT_STATUS);
while ((0x00 == (reg_value & BIT_3))
&& (time_out_cnt < ISP_TIME_OUT_MAX)) {
time_out_cnt++;
udelay(50);
reg_value = REG_RD(ISP_INT_STATUS);
}
if (time_out_cnt >= ISP_TIME_OUT_MAX) {
ret = -1;
printk("isp_axi_bus_waiting: time out.\n");
}
return ret;
}
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