Mon, May 22, 2023 at 04:26:21PM +0200, Astrid Rost kirjoitti:
> The calibration bias is setting the LED current to change
> the detection distance.
> Add read/write attribute for proximity calibration bias and read
> attribute for available values.
> This is supported for vcnl4040 and vcnl4200.
Indentation of the commit message is rather random.
...
> +
This means that one of the previous change missed the blank line here.
> +static const int vcnl4040_ps_calibbias_ua[][2] = {
> + {0, 50000},
> + {0, 75000},
> + {0, 100000},
> + {0, 120000},
> + {0, 140000},
> + {0, 160000},
> + {0, 180000},
> + {0, 200000},
> +};
> +
> static const int vcnl4040_als_persistence[] = {1, 2, 4, 8};
> static const int vcnl4040_ps_persistence[] = {1, 2, 3, 4};
> static const int vcnl4040_ps_oversampling_ratio[] = {1, 2, 4, 8};
> return ret;
> }
...
> +static ssize_t vcnl4040_read_ps_calibbias(struct vcnl4000_data *data, int *val, int *val2)
> +{
> + int ret;
> +
> + ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
> + if (ret < 0)
> + return ret;
> +
> + ret = FIELD_GET(VCNL4040_PS_MS_LED_I, ret);
> +
> + if (ret >= ARRAY_SIZE(vcnl4040_ps_calibbias_ua))
> + return -EINVAL;
> +
> + *val = vcnl4040_ps_calibbias_ua[ret][0];
> + *val2 = vcnl4040_ps_calibbias_ua[ret][1];
> + return ret;
Are you sure this is correct?
> +}
...
> +static ssize_t vcnl4040_write_ps_calibbias(struct vcnl4000_data *data, int val)
> +{
> + unsigned int i;
> + int ret, index = -1;
i or index is redundant.
> + u16 regval;
> +
> + for (i = 0; i < ARRAY_SIZE(vcnl4040_ps_calibbias_ua); i++) {
> + if (val == vcnl4040_ps_calibbias_ua[i][1]) {
> + index = i;
> + break;
> + }
> + }
> +
> + if (index < 0)
> + return -EINVAL;
> +
> + mutex_lock(&data->vcnl4000_lock);
> +
> + ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
> + if (ret < 0)
> + goto out;
> +
> + regval = (ret & ~VCNL4040_PS_MS_LED_I) |
> + FIELD_PREP(VCNL4040_PS_MS_LED_I, index);
> + ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF3,
> + regval);
> +
> +out:
out_unlock:
> + mutex_unlock(&data->vcnl4000_lock);
> + return ret;
> +}
...
> default:
> return -EINVAL;
> }
> -
Stray and ping-pong style of change at the same time.
Avoid ping-pong style when you add something in the series which is being
removed aftewards in the same series without need to be added in the first
place.
> + case IIO_CHAN_INFO_CALIBBIAS:
> + switch (chan->type) {
> + case IIO_PROXIMITY:
> + ret = vcnl4040_read_ps_calibbias(data, val, val2);
> + if (ret < 0)
> + return ret;
> + return IIO_VAL_INT_PLUS_MICRO;
> + default:
> + return -EINVAL;
> + }
--
With Best Regards,
Andy Shevchenko
