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-rw-r--r--drivers/iio/light/cm32181.c48
1 files changed, 36 insertions, 12 deletions
diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c
index 648dbd3e8635..a09c73f27805 100644
--- a/drivers/iio/light/cm32181.c
+++ b/drivers/iio/light/cm32181.c
@@ -56,15 +56,24 @@ static const u8 cm32181_reg[CM32181_CONF_REG_NUM] = {
CM32181_REG_ADDR_CMD,
};
-static const int als_it_bits[] = {12, 8, 0, 1, 2, 3};
-static const int als_it_value[] = {25000, 50000, 100000, 200000, 400000,
- 800000};
+/* CM3218 Family */
+static const int cm3218_als_it_bits[] = { 0, 1, 2, 3 };
+static const int cm3218_als_it_values[] = { 100000, 200000, 400000, 800000 };
+
+/* CM32181 Family */
+static const int cm32181_als_it_bits[] = { 12, 8, 0, 1, 2, 3 };
+static const int cm32181_als_it_values[] = {
+ 25000, 50000, 100000, 200000, 400000, 800000
+};
struct cm32181_chip {
struct i2c_client *client;
struct mutex lock;
u16 conf_regs[CM32181_CONF_REG_NUM];
int calibscale;
+ int num_als_it;
+ const int *als_it_bits;
+ const int *als_it_values;
};
/**
@@ -86,8 +95,21 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181)
return ret;
/* check device ID */
- if ((ret & 0xFF) != 0x81)
+ switch (ret & 0xFF) {
+ case 0x18: /* CM3218 */
+ cm32181->num_als_it = ARRAY_SIZE(cm3218_als_it_bits);
+ cm32181->als_it_bits = cm3218_als_it_bits;
+ cm32181->als_it_values = cm3218_als_it_values;
+ break;
+ case 0x81: /* CM32181 */
+ case 0x82: /* CM32182, fully compat. with CM32181 */
+ cm32181->num_als_it = ARRAY_SIZE(cm32181_als_it_bits);
+ cm32181->als_it_bits = cm32181_als_it_bits;
+ cm32181->als_it_values = cm32181_als_it_values;
+ break;
+ default:
return -ENODEV;
+ }
/* Default Values */
cm32181->conf_regs[CM32181_REG_ADDR_CMD] =
@@ -122,9 +144,9 @@ static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2)
als_it = cm32181->conf_regs[CM32181_REG_ADDR_CMD];
als_it &= CM32181_CMD_ALS_IT_MASK;
als_it >>= CM32181_CMD_ALS_IT_SHIFT;
- for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
- if (als_it == als_it_bits[i]) {
- *val2 = als_it_value[i];
+ for (i = 0; i < cm32181->num_als_it; i++) {
+ if (als_it == cm32181->als_it_bits[i]) {
+ *val2 = cm32181->als_it_values[i];
return IIO_VAL_INT_PLUS_MICRO;
}
}
@@ -147,14 +169,14 @@ static int cm32181_write_als_it(struct cm32181_chip *cm32181, int val)
u16 als_it;
int ret, i, n;
- n = ARRAY_SIZE(als_it_value);
+ n = cm32181->num_als_it;
for (i = 0; i < n; i++)
- if (val <= als_it_value[i])
+ if (val <= cm32181->als_it_values[i])
break;
if (i >= n)
i = n - 1;
- als_it = als_it_bits[i];
+ als_it = cm32181->als_it_bits[i];
als_it <<= CM32181_CMD_ALS_IT_SHIFT;
mutex_lock(&cm32181->lock);
@@ -266,11 +288,12 @@ static int cm32181_write_raw(struct iio_dev *indio_dev,
static ssize_t cm32181_get_it_available(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct cm32181_chip *cm32181 = iio_priv(dev_to_iio_dev(dev));
int i, n, len;
- n = ARRAY_SIZE(als_it_value);
+ n = cm32181->num_als_it;
for (i = 0, len = 0; i < n; i++)
- len += sprintf(buf + len, "0.%06u ", als_it_value[i]);
+ len += sprintf(buf + len, "0.%06u ", cm32181->als_it_values[i]);
return len + sprintf(buf + len, "\n");
}
@@ -346,6 +369,7 @@ static int cm32181_probe(struct i2c_client *client)
}
static const struct of_device_id cm32181_of_match[] = {
+ { .compatible = "capella,cm3218" },
{ .compatible = "capella,cm32181" },
{ }
};