On Wed, 18 Mar 2015, Linus Walleij wrote:

> This adds support for the LIS3LV02 accelerometer found in the
> ST Microelectronics Nomadik board series.
> 
> Cc: [email protected]
> Cc: Denis CIOCCA <[email protected]>
> Cc: Lee Jones <[email protected]>
> Signed-off-by: Linus Walleij <[email protected]>
> ---
> I'm not giving up on this. I think the st-sensors driver should
> support this variant as its framework is way better than the misc
> driver. The other driver is anyway not even in the right subsystem.

I'm not sure what the historical issues are, but the code looks fine
to me.

Acked-by: Lee Jones <[email protected]>

> ---
>  .../devicetree/bindings/iio/st-sensors.txt         |  1 +
>  drivers/iio/accel/st_accel.h                       |  1 +
>  drivers/iio/accel/st_accel_core.c                  | 81 
> ++++++++++++++++++++++
>  drivers/iio/accel/st_accel_i2c.c                   |  4 ++
>  4 files changed, 87 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/st-sensors.txt 
> b/Documentation/devicetree/bindings/iio/st-sensors.txt
> index a7a0a15913ad..d2aaca974531 100644
> --- a/Documentation/devicetree/bindings/iio/st-sensors.txt
> +++ b/Documentation/devicetree/bindings/iio/st-sensors.txt
> @@ -23,6 +23,7 @@ standard bindings from pinctrl/pinctrl-bindings.txt.
>  Valid compatible strings:
>  
>  Accelerometers:
> +- st,lis3lv02dl-accel
>  - st,lsm303dlh-accel
>  - st,lsm303dlhc-accel
>  - st,lis3dh-accel
> diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
> index fa9646034305..7ee9724b1428 100644
> --- a/drivers/iio/accel/st_accel.h
> +++ b/drivers/iio/accel/st_accel.h
> @@ -14,6 +14,7 @@
>  #include <linux/types.h>
>  #include <linux/iio/common/st_sensors.h>
>  
> +#define LIS3LV02DL_ACCEL_DEV_NAME    "lis3lv02dl_accel"
>  #define LSM303DLHC_ACCEL_DEV_NAME    "lsm303dlhc_accel"
>  #define LIS3DH_ACCEL_DEV_NAME                "lis3dh"
>  #define LSM330D_ACCEL_DEV_NAME               "lsm330d_accel"
> diff --git a/drivers/iio/accel/st_accel_core.c 
> b/drivers/iio/accel/st_accel_core.c
> index 53f32629283a..58d1d13d552a 100644
> --- a/drivers/iio/accel/st_accel_core.c
> +++ b/drivers/iio/accel/st_accel_core.c
> @@ -129,6 +129,30 @@
>  #define ST_ACCEL_3_IG1_EN_MASK                       0x08
>  #define ST_ACCEL_3_MULTIREAD_BIT             false
>  
> +/* CUSTOM VALUES FOR SENSOR 4 */
> +#define ST_ACCEL_4_WAI_EXP                   0x3a
> +#define ST_ACCEL_4_ODR_ADDR                  0x20
> +#define ST_ACCEL_4_ODR_MASK                  0x30 /* DF1 and DF0 */
> +#define ST_ACCEL_4_ODR_AVL_40HZ_VAL          0x00
> +#define ST_ACCEL_4_ODR_AVL_160HZ_VAL         0x01
> +#define ST_ACCEL_4_ODR_AVL_640HZ_VAL         0x02
> +#define ST_ACCEL_4_ODR_AVL_2560HZ_VAL                0x03
> +#define ST_ACCEL_4_PW_ADDR                   0x20
> +#define ST_ACCEL_4_PW_MASK                   0xc0
> +#define ST_ACCEL_4_FS_ADDR                   0x21
> +#define ST_ACCEL_4_FS_MASK                   0x80
> +#define ST_ACCEL_4_FS_AVL_2_VAL                      0X00
> +#define ST_ACCEL_4_FS_AVL_6_VAL                      0X01
> +#define ST_ACCEL_4_FS_AVL_2_GAIN             IIO_G_TO_M_S_2(1024)
> +#define ST_ACCEL_4_FS_AVL_6_GAIN             IIO_G_TO_M_S_2(340)
> +#define ST_ACCEL_4_BDU_ADDR                  0x21
> +#define ST_ACCEL_4_BDU_MASK                  0x40
> +#define ST_ACCEL_4_DRDY_IRQ_ADDR             0x21
> +#define ST_ACCEL_4_DRDY_IRQ_INT1_MASK                0x04
> +#define ST_ACCEL_4_IG1_EN_ADDR                       0x21
> +#define ST_ACCEL_4_IG1_EN_MASK                       0x08
> +#define ST_ACCEL_4_MULTIREAD_BIT             true
> +
>  static const struct iio_chan_spec st_accel_12bit_channels[] = {
>       ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
>                       BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
> @@ -373,6 +397,63 @@ static const struct st_sensor_settings 
> st_accel_sensors_settings[] = {
>               .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
>               .bootime = 2,
>       },
> +     {
> +             .wai = ST_ACCEL_4_WAI_EXP,
> +             .sensors_supported = {
> +                     [0] = LIS3LV02DL_ACCEL_DEV_NAME,
> +             },
> +             .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
> +             .odr = {
> +                     .addr = ST_ACCEL_4_ODR_ADDR,
> +                     .mask = ST_ACCEL_4_ODR_MASK,
> +                     .odr_avl = {
> +                             { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
> +                             { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
> +                             { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
> +                             { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
> +                     },
> +             },
> +             .pw = {
> +                     .addr = ST_ACCEL_4_PW_ADDR,
> +                     .mask = ST_ACCEL_4_PW_MASK,
> +                     .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
> +                     .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
> +             },
> +             .enable_axis = {
> +                     .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
> +                     .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
> +             },
> +             .fs = {
> +                     .addr = ST_ACCEL_4_FS_ADDR,
> +                     .mask = ST_ACCEL_4_FS_MASK,
> +                     .fs_avl = {
> +                             [0] = {
> +                                     .num = ST_ACCEL_FS_AVL_2G,
> +                                     .value = ST_ACCEL_4_FS_AVL_2_VAL,
> +                                     .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
> +                             },
> +                             [1] = {
> +                                     .num = ST_ACCEL_FS_AVL_6G,
> +                                     .value = ST_ACCEL_4_FS_AVL_6_VAL,
> +                                     .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
> +                             },
> +                     },
> +             },
> +             .bdu = {
> +                     .addr = ST_ACCEL_4_BDU_ADDR,
> +                     .mask = ST_ACCEL_4_BDU_MASK,
> +             },
> +             .drdy_irq = {
> +                     .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
> +                     .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
> +                     .ig1 = {
> +                             .en_addr = ST_ACCEL_4_IG1_EN_ADDR,
> +                             .en_mask = ST_ACCEL_4_IG1_EN_MASK,
> +                     },
> +             },
> +             .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
> +             .bootime = 2, /* guess */
> +     },
>  };
>  
>  static int st_accel_read_raw(struct iio_dev *indio_dev,
> diff --git a/drivers/iio/accel/st_accel_i2c.c 
> b/drivers/iio/accel/st_accel_i2c.c
> index c7246bdd30b9..6b720c190b2d 100644
> --- a/drivers/iio/accel/st_accel_i2c.c
> +++ b/drivers/iio/accel/st_accel_i2c.c
> @@ -21,6 +21,10 @@
>  #ifdef CONFIG_OF
>  static const struct of_device_id st_accel_of_match[] = {
>       {
> +             .compatible = "st,lis3lv02dl-accel",
> +             .data = LIS3LV02DL_ACCEL_DEV_NAME,
> +     },
> +     {
>               .compatible = "st,lsm303dlh-accel",
>               .data = LSM303DLH_ACCEL_DEV_NAME,
>       },

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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