static ssize_t tiadc_set_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct adc_device *adc_dev = iio_priv(indio_dev);
unsigned int config;
config = adc_readl(adc_dev, TSCADC_REG_CTRL);
config &= ~(TSCADC_CNTRLREG_TSCSSENB);
adc_writel(adc_dev, TSCADC_REG_CTRL, config);
if (!strncmp(buf, "oneshot", 7))
adc_dev->is_continuous_mode = false;
else if (!strncmp(buf, "continuous", 10))
adc_dev->is_continuous_mode = true;
else {
dev_err(dev, "Operational mode unknown\n");
return -EINVAL;
}
adc_step_config(adc_dev, adc_dev->is_continuous_mode);
config = adc_readl(adc_dev, TSCADC_REG_CTRL);
adc_writel(adc_dev, TSCADC_REG_CTRL,
(config | TSCADC_CNTRLREG_TSCSSENB));
return count;
}
static void rk30_adc_dump(struct adc_host *adc)
{
struct rk30_adc_device *dev = adc_priv(adc);
dev_info(adc->dev, "[0x00-0x0c]: 0x%08x 0x%08x 0x%08x 0x%08x\n",
adc_readl(dev->regs + 0x00),
adc_readl(dev->regs + 0x04),
adc_readl(dev->regs + 0x08),
adc_readl(dev->regs + 0x0c));
}
static ssize_t tiadc_show_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct adc_device *adc_dev = iio_priv(indio_dev);
unsigned int tmp;
tmp = adc_readl(adc_dev, TSCADC_REG_STEPCONFIG(TOTAL_STEPS));
tmp &= TSCADC_STEPCONFIG_MODE(1);
if (tmp == 0x00)
return sprintf(buf, "oneshot\n");
else if (tmp == 0x01)
return sprintf(buf, "continuous\n");
else
return sprintf(buf, "Operation mode unknown\n");
}
static int rk30_adc_read(struct adc_host *adc)
{
struct rk30_adc_device *dev = adc_priv(adc);
return adc_readl(dev->regs + ADC_DATA) & ADC_DATA_MASK;
}
static struct attribute *tiadc_attributes[] = {
&iio_dev_attr_mode.dev_attr.attr,
NULL,
};
static const struct attribute_group tiadc_attribute_group = {
.attrs = tiadc_attributes,
};
static irqreturn_t tiadc_irq(int irq, void *private)
{
struct iio_dev *idev = private;
struct adc_device *adc_dev = iio_priv(idev);
unsigned int status, config;
status = adc_readl(adc_dev, TSCADC_REG_IRQSTATUS);
if (status & TSCADC_IRQENB_FIFO1OVRRUN) {
config = adc_readl(adc_dev, TSCADC_REG_CTRL);
config &= ~(TSCADC_CNTRLREG_TSCSSENB);
adc_writel(adc_dev, TSCADC_REG_CTRL, config);
adc_writel(adc_dev, TSCADC_REG_IRQSTATUS,
TSCADC_IRQENB_FIFO1OVRRUN |
TSCADC_IRQENB_FIFO1UNDRFLW |
TSCADC_IRQENB_FIFO1THRES);
adc_writel(adc_dev, TSCADC_REG_CTRL,
(config | TSCADC_CNTRLREG_TSCSSENB));
return IRQ_HANDLED;
} else if (status & TSCADC_IRQENB_FIFO1THRES) {
adc_writel(adc_dev, TSCADC_REG_IRQCLR,