#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
-#include "ad2s1210.h"
#define DRV_NAME "ad2s1210"
unsigned long flags;
};
-static const struct ad2s1210_gpio gpios_in[] = {
- [AD2S1210_SAMPLE] = { .name = "adi,sample", .flags = GPIOD_IN },
- [AD2S1210_A0] = { .name = "adi,a0", .flags = GPIOD_IN },
- [AD2S1210_A1] = { .name = "adi,a1", .flags = GPIOD_IN },
- [AD2S1210_RES0] = { .name = "adi,res0", .flags = GPIOD_IN },
- [AD2S1210_RES1] = { .name = "adi,res1", .flags = GPIOD_IN },
-};
-
-static const struct ad2s1210_gpio gpios_out[] = {
+static const struct ad2s1210_gpio gpios[] = {
[AD2S1210_SAMPLE] = { .name = "adi,sample", .flags = GPIOD_OUT_LOW },
[AD2S1210_A0] = { .name = "adi,a0", .flags = GPIOD_OUT_LOW },
[AD2S1210_A1] = { .name = "adi,a1", .flags = GPIOD_OUT_LOW },
static const unsigned int ad2s1210_resolution_value[] = { 10, 12, 14, 16 };
struct ad2s1210_state {
- const struct ad2s1210_platform_data *pdata;
struct mutex lock;
struct spi_device *sdev;
struct gpio_desc *gpios[5];
return ad2s1210_config_write(st, fcw);
}
-static unsigned char ad2s1210_read_resolution_pin(struct ad2s1210_state *st)
-{
- int resolution = (gpiod_get_value(st->gpios[AD2S1210_RES0]) << 1) |
- gpiod_get_value(st->gpios[AD2S1210_RES1]);
-
- return ad2s1210_resolution_value[resolution];
-}
-
static const int ad2s1210_res_pins[4][2] = {
{ 0, 0 }, {0, 1}, {1, 0}, {1, 1}
};
}
st->resolution =
ad2s1210_resolution_value[data & AD2S1210_SET_RESOLUTION];
- if (st->pdata->gpioin) {
- data = ad2s1210_read_resolution_pin(st);
- if (data != st->resolution)
- dev_warn(dev, "ad2s1210: resolution settings not match\n");
- } else {
- ad2s1210_set_resolution_pin(st);
- }
+ ad2s1210_set_resolution_pin(st);
ret = len;
st->hysteresis = !!(data & AD2S1210_ENABLE_HYSTERESIS);
}
st->resolution =
ad2s1210_resolution_value[data & AD2S1210_SET_RESOLUTION];
- if (st->pdata->gpioin) {
- data = ad2s1210_read_resolution_pin(st);
- if (data != st->resolution)
- dev_warn(dev, "ad2s1210: resolution settings not match\n");
- } else {
- ad2s1210_set_resolution_pin(st);
- }
+ ad2s1210_set_resolution_pin(st);
ret = len;
error_ret:
mutex_unlock(&st->lock);
int ret;
mutex_lock(&st->lock);
- if (st->pdata->gpioin)
- st->resolution = ad2s1210_read_resolution_pin(st);
- else
- ad2s1210_set_resolution_pin(st);
+ ad2s1210_set_resolution_pin(st);
ret = ad2s1210_config_write(st, AD2S1210_REG_CONTROL);
if (ret < 0)
static int ad2s1210_setup_gpios(struct ad2s1210_state *st)
{
- const struct ad2s1210_gpio *pin = st->pdata->gpioin ?
- &gpios_in[0] : &gpios_out[0];
struct spi_device *spi = st->sdev;
int i, ret;
- for (i = 0; i < ARRAY_SIZE(gpios_in); i++) {
- st->gpios[i] = devm_gpiod_get(&spi->dev, pin[i].name,
- pin[i].flags);
+ for (i = 0; i < ARRAY_SIZE(gpios); i++) {
+ st->gpios[i] = devm_gpiod_get(&spi->dev, gpios[i].name,
+ gpios[i].flags);
if (IS_ERR(st->gpios[i])) {
ret = PTR_ERR(st->gpios[i]);
dev_err(&spi->dev,
"ad2s1210: failed to request %s GPIO: %d\n",
- pin[i].name, ret);
+ gpios[i].name, ret);
return ret;
}
}
if (!indio_dev)
return -ENOMEM;
st = iio_priv(indio_dev);
- st->pdata = spi->dev.platform_data;
ret = ad2s1210_setup_gpios(st);
if (ret < 0)
return ret;