iio: light: vcnl4000: add support for Capella CM36686 and CM36672P

Add support for Capella's CM36686 and CM36672P sensors. Capella
CM36686 is an ambient light and proximity sensor that is fully
compatible with VCNL4040 and can be used as is.
CM36672P is partially compatible with VCNL4040 - it uses the same
register fields for proximity sensing, but the ambient light registers
are reserved. For CM36672P, we reuse vcnl4040_channels, but remove the
IIO_LIGHT channel and ambient light integration time.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index a36c23813679299e2b445f426116a641b1a468ef..5e03c3d8874b3b673f3bcb3b5a149e9682ce8a6b 100644 (file)
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -185,6 +185,7 @@ static const int vcnl4040_ps_oversampling_ratio[] = {1, 2, 4, 8};
 #define VCNL4000_SLEEP_DELAY_MS        2000 /* before we enter pm_runtime_suspend */
 
 enum vcnl4000_device_ids {
+       CM36672P,
        VCNL4000,
        VCNL4010,
        VCNL4040,
@@ -235,6 +236,8 @@ struct vcnl4000_chip_spec {
 };
 
 static const struct i2c_device_id vcnl4000_id[] = {
+       { "cm36672p", CM36672P },
+       { "cm36686", VCNL4040 },
        { "vcnl4000", VCNL4000 },
        { "vcnl4010", VCNL4010 },
        { "vcnl4020", VCNL4010 },
@@ -1842,6 +1845,22 @@ static const struct iio_chan_spec vcnl4040_channels[] = {
        }
 };
 
+static const struct iio_chan_spec cm36672p_channels[] = {
+       {
+               .type = IIO_PROXIMITY,
+               .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                       BIT(IIO_CHAN_INFO_INT_TIME) |
+                       BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO) |
+                       BIT(IIO_CHAN_INFO_CALIBBIAS),
+               .info_mask_separate_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+                       BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO) |
+                       BIT(IIO_CHAN_INFO_CALIBBIAS),
+               .ext_info = vcnl4000_ext_info,
+               .event_spec = vcnl4040_event_spec,
+               .num_event_specs = ARRAY_SIZE(vcnl4040_event_spec),
+       },
+};
+
 static const struct iio_info vcnl4000_info = {
        .read_raw = vcnl4000_read_raw,
 };
@@ -1867,6 +1886,19 @@ static const struct iio_info vcnl4040_info = {
 };
 
 static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
+       [CM36672P] = {
+               .prod = "CM36672P",
+               .init = vcnl4200_init,
+               .measure_proximity = vcnl4200_measure_proximity,
+               .set_power_state = vcnl4200_set_power_state,
+               .channels = cm36672p_channels,
+               .num_channels = ARRAY_SIZE(cm36672p_channels),
+               .info = &vcnl4040_info,
+               .irq_thread = vcnl4040_irq_thread,
+               .int_reg = VCNL4040_INT_FLAGS,
+               .ps_it_times = &vcnl4040_ps_it_times,
+               .num_ps_it_times = ARRAY_SIZE(vcnl4040_ps_it_times),
+       },
        [VCNL4000] = {
                .prod = "VCNL4000",
                .init = vcnl4000_init,
@@ -2033,6 +2065,15 @@ fail_poweroff:
 }
 
 static const struct of_device_id vcnl_4000_of_match[] = {
+       {
+               .compatible = "capella,cm36672p",
+               .data = (void *)CM36672P,
+       },
+       /* Capella CM36686 is fully compatible with Vishay VCNL4040 */
+       {
+               .compatible = "capella,cm36686",
+               .data = (void *)VCNL4040,
+       },
        {
                .compatible = "vishay,vcnl4000",
                .data = (void *)VCNL4000,