/*
* Write a dryice register and wait until it completes.
*
* This function uses interrupts to determine when the
* write has completed.
*/
static int di_write_wait(struct rtc_drv_data *pdata, u32 val, int reg)
{
int ret;
int rc = 0;
/* serialize register writes */
mutex_lock(&pdata->write_mutex);
/* enable the write-complete interrupt */
di_int_enable(pdata, DIER_WCIE);
pdata->dsr = 0;
/* do the register write */
di_write(pdata, val, reg);
/* wait for the write to finish */
ret = wait_event_interruptible_timeout(pdata->write_wait,
pdata->dsr & (DSR_WCF | DSR_WEF),
1 * HZ);
if (ret == 0)
dev_warn(&pdata->pdev->dev, "Write-wait timeout\n");
/* check for write error */
if (pdata->dsr & DSR_WEF) {
clear_write_error(pdata);
rc = -EIO;
}
mutex_unlock(&pdata->write_mutex);
return rc;
}
static int di_write_wait(u32 val, const char *reg)
{
int cnt;
int ret = 0;
int rc = 0;
/* wait for the write to finish */
for (cnt = 0; cnt < 100; cnt++) {
if ((__raw_readl(&data.regs->dsr) & (DSR_WCF | DSR_WEF)) != 0) {
ret = 1;
break;
}
udelay(10);
}
if (ret == 0)
printf("### Warning: RTC - Write-wait timeout "
"val = 0x%.8x reg = %s\n", val, reg);
/* check for write error */
if (__raw_readl(&data.regs->dsr) & DSR_WEF) {
clear_write_error();
rc = -1;
}
return rc;
}
/*
* Write a dryice register and wait until it completes.
*
* This function uses interrupts to determine when the
* write has completed.
*/
static int di_write_wait(struct imxdi_dev *imxdi, u32 val, int reg)
{
int ret;
int rc = 0;
/* serialize register writes */
mutex_lock(&imxdi->write_mutex);
/* enable the write-complete interrupt */
di_int_enable(imxdi, DIER_WCIE);
imxdi->dsr = 0;
/* do the register write */
__raw_writel(val, imxdi->ioaddr + reg);
/* wait for the write to finish */
ret = wait_event_interruptible_timeout(imxdi->write_wait,
imxdi->dsr & (DSR_WCF | DSR_WEF), msecs_to_jiffies(1));
if (ret < 0) {
rc = ret;
goto out;
} else if (ret == 0) {
dev_warn(&imxdi->pdev->dev,
"Write-wait timeout "
"val = 0x%08x reg = 0x%08x\n", val, reg);
}
/* check for write error */
if (imxdi->dsr & DSR_WEF) {
clear_write_error(imxdi);
rc = -EIO;
}
out:
mutex_unlock(&imxdi->write_mutex);
return rc;
}
static int di_write_wait(struct imxdi_dev *imxdi, u32 val, int reg)
{
int ret;
int rc = 0;
mutex_lock(&imxdi->write_mutex);
di_int_enable(imxdi, DIER_WCIE);
imxdi->dsr = 0;
__raw_writel(val, imxdi->ioaddr + reg);
ret = wait_event_interruptible_timeout(imxdi->write_wait,
imxdi->dsr & (DSR_WCF | DSR_WEF), msecs_to_jiffies(1));
if (ret < 0) {
rc = ret;
goto out;
} else if (ret == 0) {
dev_warn(&imxdi->pdev->dev,
"Write-wait timeout "
"val = 0x%08x reg = 0x%08x\n", val, reg);
}
if (imxdi->dsr & DSR_WEF) {
clear_write_error(imxdi);
rc = -EIO;
}
out:
mutex_unlock(&imxdi->write_mutex);
return rc;
}
