MMA8652FC and MMA8653FC don't provide the transient interrupt source, so the motion interrupt source is used by providing a new iio_chan_spec definition, so that other supported devices are not affected by this. Datasheets for the newly supported devices are available at Freescale's website: http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8652FC.pdf http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8653FC.pdf Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Christoph Muellner <christoph.muellner@xxxxxxxxxxxxxxxxxxxxx> --- .../devicetree/bindings/iio/accel/mma8452.txt | 4 +- drivers/iio/accel/Kconfig | 2 +- drivers/iio/accel/mma8452.c | 98 ++++++++++++++++++++-- 3 files changed, 95 insertions(+), 9 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/accel/mma8452.txt b/Documentation/devicetree/bindings/iio/accel/mma8452.txt index c3bc272..e3c3746 100644 --- a/Documentation/devicetree/bindings/iio/accel/mma8452.txt +++ b/Documentation/devicetree/bindings/iio/accel/mma8452.txt @@ -1,10 +1,12 @@ -Freescale MMA8452Q or MMA8453Q triaxial accelerometer +Freescale MMA8452Q, MMA8453Q, MMA8652FC or MMA8653FC triaxial accelerometer Required properties: - compatible: should contain one of * "fsl,mma8452" * "fsl,mma8453" + * "fsl,mma8652" + * "fsl,mma8653" - reg: the I2C address of the chip Optional properties: diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index e4075a0..a37155d 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -106,7 +106,7 @@ config MMA8452 select IIO_TRIGGERED_BUFFER help Say yes here to build support for the following Freescale 3-axis - accelerometers: MMA8452Q, MMA8453Q. + accelerometers: MMA8452Q, MMA8453Q, MMA8652FC, MMA8653FC. 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 6b1a862..59b4455 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -3,6 +3,8 @@ * * MMA8452Q (12 bit) * MMA8453Q (10 bit) + * MMA8652FC (12 bit) + * MMA8653FC (10 bit) * * Copyright 2014 Peter Meerwald <pmeerw@xxxxxxxxxx> * @@ -84,6 +86,8 @@ #define MMA8452_DEVICE_ID 0x2a #define MMA8453_DEVICE_ID 0x3a +#define MMA8652_DEVICE_ID 0x4a +#define MMA8653_DEVICE_ID 0x5a struct mma8452_data { struct i2c_client *client; @@ -791,6 +795,26 @@ static struct attribute_group mma8452_event_attribute_group = { .num_event_specs = ARRAY_SIZE(mma8452_transient_event), \ } +#define MMA8652_CHANNEL(axis, idx, bits) { \ + .type = IIO_ACCEL, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_CALIBBIAS), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .scan_index = idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = (bits), \ + .storagebits = 16, \ + .shift = 16 - (bits), \ + .endianness = IIO_BE, \ + }, \ + .event_spec = mma8452_motion_event, \ + .num_event_specs = ARRAY_SIZE(mma8452_motion_event), \ +} + static const struct iio_chan_spec mma8452_channels[] = { MMA8452_CHANNEL(X, 0, 12), MMA8452_CHANNEL(Y, 1, 12), @@ -805,9 +829,25 @@ static const struct iio_chan_spec mma8453_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(3), }; +static const struct iio_chan_spec mma8652_channels[] = { + MMA8652_CHANNEL(X, 0, 12), + MMA8652_CHANNEL(Y, 1, 12), + MMA8652_CHANNEL(Z, 2, 12), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static const struct iio_chan_spec mma8653_channels[] = { + MMA8652_CHANNEL(X, 0, 10), + MMA8652_CHANNEL(Y, 1, 10), + MMA8652_CHANNEL(Z, 2, 10), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + enum { mma8452, mma8453, + mma8652, + mma8653, }; static const struct mma_chip_info mma_chip_info_table[] = { @@ -850,6 +890,38 @@ static const struct mma_chip_info mma_chip_info_table[] = { .ev_ths_mask = MMA8452_TRANSIENT_THS_MASK, .ev_count = MMA8452_TRANSIENT_COUNT, }, + [mma8652] = { + .chip_id = MMA8652_DEVICE_ID, + .channels = mma8652_channels, + .num_channels = ARRAY_SIZE(mma8652_channels), + .mma_scales = { {0, 9577}, {0, 19154}, {0, 38307} }, + .ev_cfg = MMA8452_FF_MT_CFG, + .ev_cfg_ele = MMA8452_FF_MT_CFG_ELE, + .ev_cfg_chan_shift = 3, + .ev_src = MMA8452_FF_MT_SRC, + .ev_src_xe = MMA8452_FF_MT_SRC_XHE, + .ev_src_ye = MMA8452_FF_MT_SRC_YHE, + .ev_src_ze = MMA8452_FF_MT_SRC_ZHE, + .ev_ths = MMA8452_FF_MT_THS, + .ev_ths_mask = MMA8452_FF_MT_THS_MASK, + .ev_count = MMA8452_FF_MT_COUNT, + }, + [mma8653] = { + .chip_id = MMA8653_DEVICE_ID, + .channels = mma8653_channels, + .num_channels = ARRAY_SIZE(mma8653_channels), + .mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} }, + .ev_cfg = MMA8452_FF_MT_CFG, + .ev_cfg_ele = MMA8452_FF_MT_CFG_ELE, + .ev_cfg_chan_shift = 3, + .ev_src = MMA8452_FF_MT_SRC, + .ev_src_xe = MMA8452_FF_MT_SRC_XHE, + .ev_src_ye = MMA8452_FF_MT_SRC_YHE, + .ev_src_ze = MMA8452_FF_MT_SRC_ZHE, + .ev_ths = MMA8452_FF_MT_THS, + .ev_ths_mask = MMA8452_FF_MT_THS_MASK, + .ev_count = MMA8452_FF_MT_COUNT, + }, }; static struct attribute *mma8452_attributes[] = { @@ -972,6 +1044,8 @@ 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] }, + { .compatible = "fsl,mma8652", .data = &mma_chip_info_table[mma8652] }, + { .compatible = "fsl,mma8653", .data = &mma_chip_info_table[mma8653] }, { } }; MODULE_DEVICE_TABLE(of, mma8452_dt_ids); @@ -984,13 +1058,6 @@ static int mma8452_probe(struct i2c_client *client, int ret; const struct of_device_id *match; - ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I); - if (ret < 0) - return ret; - - if (ret != MMA8452_DEVICE_ID && ret != MMA8453_DEVICE_ID) - return -ENODEV; - match = of_match_device(mma8452_dt_ids, &client->dev); if (!match) { dev_err(&client->dev, "unknown device model\n"); @@ -1006,6 +1073,21 @@ static int mma8452_probe(struct i2c_client *client, mutex_init(&data->lock); data->chip_info = match->data; + ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I); + if (ret < 0) + return ret; + + switch (ret) { + case MMA8452_DEVICE_ID: + case MMA8453_DEVICE_ID: + case MMA8652_DEVICE_ID: + case MMA8653_DEVICE_ID: + if (ret == data->chip_info->chip_id) + break; + default: + return -ENODEV; + } + dev_info(&client->dev, "registering %s accelerometer; ID 0x%x\n", match->compatible, data->chip_info->chip_id); @@ -1138,6 +1220,8 @@ static SIMPLE_DEV_PM_OPS(mma8452_pm_ops, mma8452_suspend, mma8452_resume); static const struct i2c_device_id mma8452_id[] = { { "mma8452", mma8452 }, { "mma8453", mma8453 }, + { "mma8652", mma8652 }, + { "mma8653", mma8653 }, { } }; MODULE_DEVICE_TABLE(i2c, mma8452_id); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
