On 01/09/15 12:45, Martin Kepplinger wrote: > This adds support for the 10 bit version if Freescale's accelerometers > of this series. The datasheet is available at Freescale's website: > > http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8453Q.pdf > > It creates a devicetree bindings file to document the new functionality > and removes the driver from the trivial-devices list. > > Signed-off-by: Martin Kepplinger <[email protected]> > Signed-off-by: Christoph Muellner <[email protected]> Applied. > --- > .../devicetree/bindings/i2c/trivial-devices.txt | 1 - > .../devicetree/bindings/iio/accel/mma8452.txt | 22 +++++++++++++ > drivers/iio/accel/Kconfig | 6 ++-- > drivers/iio/accel/mma8452.c | 37 > ++++++++++++++++++++-- > 4 files changed, 59 insertions(+), 7 deletions(-) > create mode 100644 Documentation/devicetree/bindings/iio/accel/mma8452.txt > > diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt > b/Documentation/devicetree/bindings/i2c/trivial-devices.txt > index d77d412..a50e56d 100644 > --- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt > +++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt > @@ -54,7 +54,6 @@ epson,rx8581 I2C-BUS INTERFACE REAL TIME > CLOCK MODULE > fsl,mag3110 MAG3110: Xtrinsic High Accuracy, 3D Magnetometer > fsl,mc13892 MC13892: Power Management Integrated Circuit (PMIC) for > i.MX35/51 > fsl,mma8450 MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic > Accelerometer > -fsl,mma8452 MMA8452Q: 3-axis 12-bit / 8-bit Digital Accelerometer > fsl,mpr121 MPR121: Proximity Capacitive Touch Sensor Controller > fsl,sgtl5000 SGTL5000: Ultra Low-Power Audio Codec > gmt,g751 G751: Digital Temperature Sensor and Thermal Watchdog > with Two-Wire Interface > diff --git a/Documentation/devicetree/bindings/iio/accel/mma8452.txt > b/Documentation/devicetree/bindings/iio/accel/mma8452.txt > new file mode 100644 > index 0000000..c3bc272 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/accel/mma8452.txt > @@ -0,0 +1,22 @@ > +Freescale MMA8452Q or MMA8453Q triaxial accelerometer > + > +Required properties: > + > + - compatible: should contain one of > + * "fsl,mma8452" > + * "fsl,mma8453" > + - reg: the I2C address of the chip > + > +Optional properties: > + > + - interrupt-parent: should be the phandle for the interrupt controller > + - interrupts: interrupt mapping for GPIO IRQ > + > +Example: > + > + mma8453fc@1d { > + compatible = "fsl,mma8453"; > + reg = <0x1d>; > + interrupt-parent = <&gpio1>; > + interrupts = <5 0>; > + }; > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig > index a59047d..e4075a0 100644 > --- a/drivers/iio/accel/Kconfig > +++ b/drivers/iio/accel/Kconfig > @@ -100,13 +100,13 @@ config KXCJK1013 > be called kxcjk-1013. > > config MMA8452 > - tristate "Freescale MMA8452Q Accelerometer Driver" > + tristate "Freescale MMA8452Q and similar Accelerometers Driver" > depends on I2C > select IIO_BUFFER > select IIO_TRIGGERED_BUFFER > help > - Say yes here to build support for the Freescale MMA8452Q 3-axis > - accelerometer. > + Say yes here to build support for the following Freescale 3-axis > + accelerometers: MMA8452Q, MMA8453Q. > > To compile this driver as a module, choose M here: the module > will be called mma8452. > diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c > index f28428fa..7b2ab17 100644 > --- a/drivers/iio/accel/mma8452.c > +++ b/drivers/iio/accel/mma8452.c > @@ -1,5 +1,8 @@ > /* > - * mma8452.c - Support for Freescale MMA8452Q 3-axis 12-bit accelerometer > + * mma8452.c - Support for following Freescale 3-axis accelerometers: > + * > + * MMA8452Q (12 bit) > + * MMA8453Q (10 bit) > * > * Copyright 2014 Peter Meerwald <[email protected]> > * > @@ -26,7 +29,7 @@ > > #define MMA8452_STATUS 0x00 > #define MMA8452_STATUS_DRDY (BIT(2) | BIT(1) | BIT(0)) > -#define MMA8452_OUT_X 0x01 /* MSB first, > 12-bit */ > +#define MMA8452_OUT_X 0x01 /* MSB first */ > #define MMA8452_OUT_Y 0x03 > #define MMA8452_OUT_Z 0x05 > #define MMA8452_INT_SRC 0x0c > @@ -69,6 +72,7 @@ > #define MMA8452_INT_TRANS BIT(5) > > #define MMA8452_DEVICE_ID 0x2a > +#define MMA8453_DEVICE_ID 0x3a > > struct mma8452_data { > struct i2c_client *client; > @@ -768,8 +772,16 @@ static const struct iio_chan_spec mma8452_channels[] = { > IIO_CHAN_SOFT_TIMESTAMP(3), > }; > > +static const struct iio_chan_spec mma8453_channels[] = { > + MMA8452_CHANNEL(X, 0, 10), > + MMA8452_CHANNEL(Y, 1, 10), > + MMA8452_CHANNEL(Z, 2, 10), > + IIO_CHAN_SOFT_TIMESTAMP(3), > +}; > + > enum { > mma8452, > + mma8453, > }; > > static const struct mma_chip_info mma_chip_info_table[] = { > @@ -796,6 +808,22 @@ static const struct mma_chip_info mma_chip_info_table[] > = { > .ev_ths_mask = MMA8452_TRANSIENT_THS_MASK, > .ev_count = MMA8452_TRANSIENT_COUNT, > }, > + [mma8453] = { > + .chip_id = MMA8453_DEVICE_ID, > + .channels = mma8453_channels, > + .num_channels = ARRAY_SIZE(mma8453_channels), > + .mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} }, > + .ev_cfg = MMA8452_TRANSIENT_CFG, > + .ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE, > + .ev_cfg_chan_shift = 1, > + .ev_src = MMA8452_TRANSIENT_SRC, > + .ev_src_xe = MMA8452_TRANSIENT_SRC_XTRANSE, > + .ev_src_ye = MMA8452_TRANSIENT_SRC_YTRANSE, > + .ev_src_ze = MMA8452_TRANSIENT_SRC_ZTRANSE, > + .ev_ths = MMA8452_TRANSIENT_THS, > + .ev_ths_mask = MMA8452_TRANSIENT_THS_MASK, > + .ev_count = MMA8452_TRANSIENT_COUNT, > + }, > }; > > static struct attribute *mma8452_attributes[] = { > @@ -917,6 +945,7 @@ static int mma8452_reset(struct i2c_client *client) > > static const struct of_device_id mma8452_dt_ids[] = { > { .compatible = "fsl,mma8452", .data = &mma_chip_info_table[mma8452] }, > + { .compatible = "fsl,mma8453", .data = &mma_chip_info_table[mma8453] }, > { } > }; > MODULE_DEVICE_TABLE(of, mma8452_dt_ids); > @@ -932,7 +961,8 @@ static int mma8452_probe(struct i2c_client *client, > ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I); > if (ret < 0) > return ret; > - if (ret != MMA8452_DEVICE_ID) > + > + if (ret != MMA8452_DEVICE_ID && ret != MMA8453_DEVICE_ID) > return -ENODEV; > > match = of_match_device(mma8452_dt_ids, &client->dev); > @@ -1079,6 +1109,7 @@ static SIMPLE_DEV_PM_OPS(mma8452_pm_ops, > mma8452_suspend, mma8452_resume); > > static const struct i2c_device_id mma8452_id[] = { > { "mma8452", mma8452 }, > + { "mma8453", mma8453 }, > { } > }; > MODULE_DEVICE_TABLE(i2c, mma8452_id); >
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