Re: [PATCH 4/4] iio: light: stk3310: add stk3337 support

[Jonathan Cameron <jic23@kernel.org>]

On Sun, 08 Nov 2026 00:15:06 +0200
Roman Vivchar via B4 Relay <devnull+rva333.protonmail.com@kernel.org> wrote:

> From: Roman Vivchar <rva333@protonmail.com>
> 
> Add support for the stk3337 sensor, found in the Xiaomi Redmi Note 9
> phone.
> 
> In addition to the standard stk3310 ambient light and proximity
> channels, the stk3337 provides a clear intensity channel, matching the
> layout already used by the stk36c61.

I think you should probably make it clear that this is a subset of
the stk36c61 channel spec as that also has other colour sensors.

I was briefly confused as to why you didn't just use the chan spec
from that given this description.

Other than that, looks good to me.

Thanks

Jonathan


> 
> Datasheet: https://www.bestmodulescorp.com/en/amfile/file/download/file/1699/product/1048/
> Signed-off-by: Roman Vivchar <rva333@protonmail.com>
> ---
>  drivers/iio/light/stk3310.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
> index 2f4747c06f43..6d629ce726fc 100644
> --- a/drivers/iio/light/stk3310.c
> +++ b/drivers/iio/light/stk3310.c
> @@ -60,6 +60,7 @@
>  #define STK3311S34_CHIP_ID_VAL			0x1E
>  #define STK3311X_CHIP_ID_VAL			0x12
>  #define STK3335_CHIP_ID_VAL			0x51
> +#define STK3337_CHIP_ID_VAL			0x5F
>  #define STK36C61_CHIP_ID_VAL			0x95
>  #define STK3310_PSINT_EN			0x01
>  #define STK3310_PS_MAX_VAL			0xFFFF
> @@ -111,6 +112,7 @@ static const u8 stk3310_chip_ids[] = {
>  	STK3311X_CHIP_ID_VAL,
>  	STK3311_CHIP_ID_VAL,
>  	STK3335_CHIP_ID_VAL,
> +	STK3337_CHIP_ID_VAL,
>  	STK36C61_CHIP_ID_VAL,
>  };
>  
> @@ -233,6 +235,12 @@ static const struct iio_chan_spec stk3310_channels[] = {
>  	STK3310_PROXIMITY_CHANNEL,
>  };
>  
> +static const struct iio_chan_spec stk3337_channels[] = {
> +	STK3310_LIGHT_CHANNEL,
> +	STK3310_PROXIMITY_CHANNEL,
> +	STK36C61_INTENSITY_CHANNEL(CLEAR, STK36C61_REG_CLEAR_DATA_MSB),
> +};
> +
>  static const struct iio_chan_spec stk36c61_channels[] = {
>  	STK3310_LIGHT_CHANNEL,
>  	STK3310_PROXIMITY_CHANNEL,
> @@ -260,6 +268,12 @@ static const struct stk3310_chip_info stk3310_chip_info = {
>  	.num_channels = ARRAY_SIZE(stk3310_channels),
>  };
>  
> +static const struct stk3310_chip_info stk3337_chip_info = {
> +	.name = "stk3337",
> +	.channels = stk3337_channels,
> +	.num_channels = ARRAY_SIZE(stk3337_channels),
> +};
> +
>  static const struct stk3310_chip_info stk36c61_chip_info = {
>  	.name = "stk36c61",
>  	.channels = stk36c61_channels,
> @@ -870,6 +884,7 @@ static const struct i2c_device_id stk3310_i2c_id[] = {
>  	{ .name = "stk3310", .driver_data = (kernel_ulong_t)&stk3310_chip_info },
>  	{ .name = "stk3311", .driver_data = (kernel_ulong_t)&stk3310_chip_info },
>  	{ .name = "stk3335", .driver_data = (kernel_ulong_t)&stk3310_chip_info },
> +	{ .name = "stk3337", .driver_data = (kernel_ulong_t)&stk3337_chip_info },
>  	{ .name = "stk36c61", .driver_data = (kernel_ulong_t)&stk36c61_chip_info },
>  	{ }
>  };
> @@ -888,6 +903,7 @@ static const struct of_device_id stk3310_of_match[] = {
>  	{ .compatible = "sensortek,stk3310", .data = &stk3310_chip_info },
>  	{ .compatible = "sensortek,stk3311", .data = &stk3310_chip_info },
>  	{ .compatible = "sensortek,stk3335", .data = &stk3310_chip_info },
> +	{ .compatible = "sensortek,stk3337", .data = &stk3337_chip_info },
>  	{ .compatible = "sensortek,stk36c61", .data = &stk36c61_chip_info },
>  	{ }
>  };
>