On Thu, 17 Aug 2017 16:21:37 +0200
Michał Mirosław <mirq-linux@xxxxxxxxxxxx> wrote:
> KXTF9 has mostly compatible register layout to KXCJK accelerometer.
> There is no motion direction interrupt support, but there is tap
> direction detection instead (not implemented in this patch).
>
> Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
I'd have been tempted to introduce a full chip_info type structure
to represent the differences rather than the slightly messier
approach used here. However, perhaps not worth it whilst we are only
supporting 2 parts (effectively anyway).
This is fine, and I'll be happy to pick up these last few patches
once the changes to register naming are backed out.
Thanks,
Jonathan
> ---
> drivers/iio/accel/Kconfig | 4 +-
> drivers/iio/accel/kxcjk-1013.c | 119 +++++++++++++++++++++++++++++++++++------
> 2 files changed, 106 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> index 15de262015df..0be352a7b6f4 100644
> --- a/drivers/iio/accel/Kconfig
> +++ b/drivers/iio/accel/Kconfig
> @@ -219,8 +219,8 @@ config KXCJK1013
> select IIO_TRIGGERED_BUFFER
> help
> Say Y here if you want to build a driver for the Kionix KXCJK-1013
> - triaxial acceleration sensor. This driver also supports KXCJ9-1008
> - and KXTJ2-1009.
> + triaxial acceleration sensor. This driver also supports KXCJ9-1008,
> + KXTJ2-1009 and KXTF9.
>
> To compile this driver as a module, choose M here: the module will
> be called kxcjk-1013.
> diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
> index 8bde6bead073..a3f4fe1813d1 100644
> --- a/drivers/iio/accel/kxcjk-1013.c
> +++ b/drivers/iio/accel/kxcjk-1013.c
> @@ -34,6 +34,13 @@
> #define KXCJK1013_DRV_NAME "kxcjk1013"
> #define KXCJK1013_IRQ_NAME "kxcjk1013_event"
>
> +#define KXTF9_REG_HP_XOUT_L 0x00
> +#define KXTF9_REG_HP_XOUT_H 0x01
> +#define KXTF9_REG_HP_YOUT_L 0x02
> +#define KXTF9_REG_HP_YOUT_H 0x03
> +#define KXTF9_REG_HP_ZOUT_L 0x04
> +#define KXTF9_REG_HP_ZOUT_H 0x05
> +
> #define KXCJK1013_REG_XOUT_L 0x06
> /*
> * From low byte X axis register, all the other addresses of Y and Z can be
> @@ -48,19 +55,43 @@
>
> #define KXCJK1013_REG_DCST_RESP 0x0C
> #define KXCJK1013_REG_WHO_AM_I 0x0F
> -#define KXREG_INT_SRC_DATA 0x16
> +#define KXTF9_REG_TILT_POS_CUR 0x10
> +#define KXTF9_REG_TILT_POS_PREV 0x11
> +#define KXTF9_REG_INT_SRC1 0x15
> +#define KXREG_INT_SRC_DATA 0x16 /* compatible; KXTF9: INT_SRC2, KXCJK: INT_SRC1 */
> #define KXCJK1013_REG_INT_SRC2 0x17
> #define KXCJK1013_REG_STATUS_REG 0x18
> #define KXCJK1013_REG_INT_REL 0x1A
> #define KXREG_CTRL1 0x1B
> -#define KXREG_CTRL3 0x1D
> +#define KXREG_CTRL2 0x1C /* KXTF9: CTRL_REG2 */
> +#define KXREG_CTRL3 0x1D /* mostly compatible; KXTF9: CTRL_REG3, KXCJK: CTRL_REG2 */
> #define KXREG_INT_CTRL1 0x1E
> #define KXREG_INT_CTRL2 0x1F
> +#define KXTF9_REG_INT_CTRL3 0x20
> #define KXCJK1013_REG_DATA_CTRL 0x21
> +#define KXTF9_REG_TILT_TIMER 0x28
> #define KXCJK1013_REG_WAKE_TIMER 0x29
> +#define KXTF9_REG_TDT_TIMER 0x2B
> +#define KXTF9_REG_TDT_THRESH_H 0x2C
> +#define KXTF9_REG_TDT_THRESH_L 0x2D
> +#define KXTF9_REG_TDT_TAP_TIMER 0x2E
> +#define KXTF9_REG_TDT_TOTAL_TIMER 0x2F
> +#define KXTF9_REG_TDT_LATENCY_TIMER 0x30
> +#define KXTF9_REG_TDT_WINDOW_TIMER 0x31
> #define KXCJK1013_REG_SELF_TEST 0x3A
> +#define KXTF9_REG_WAKE_THRESH 0x5A
> +#define KXTF9_REG_TILT_ANGLE 0x5C
> +#define KXTF9_REG_HYST_SET 0x5F
> #define KXCJK1013_REG_WAKE_THRES 0x6A
>
> +/* TILT_POS bits */
> +#define KXTF9_REG_TILT_BIT_LEFT_EDGE BIT(5)
> +#define KXTF9_REG_TILT_BIT_RIGHT_EDGE BIT(4)
> +#define KXTF9_REG_TILT_BIT_LOWER_EDGE BIT(3)
> +#define KXTF9_REG_TILT_BIT_UPPER_EDGE BIT(2)
> +#define KXTF9_REG_TILT_BIT_FACE_DOWN BIT(1)
> +#define KXTF9_REG_TILT_BIT_FACE_UP BIT(0)
> +
> #define KXREG_CTRL1_BIT_PC1 BIT(7)
> #define KXREG_CTRL1_BIT_RES BIT(6)
> #define KXREG_CTRL1_BIT_DRDY BIT(5)
> @@ -70,6 +101,7 @@
> #define KXREG_CTRL1_BIT_WUFE BIT(1)
> #define KXREG_CTRL1_BIT_TPE BIT(0)
>
> +#define KXREG_INT_CTRL1_BIT_IEU BIT(2)
> #define KXREG_INT_CTRL1_BIT_IEL BIT(3)
> #define KXREG_INT_CTRL1_BIT_IEA BIT(4)
> #define KXREG_INT_CTRL1_BIT_IEN BIT(5)
> @@ -79,11 +111,16 @@
>
> #define KXCJK1013_SLEEP_DELAY_MS 2000
>
> -/* KXCJK: INT_SOURCE1 */
> +/* KXCJK: INT_SOURCE1, KXTF9: INT_SRC_REG2 */
> +#define KXREG_INT_BIT_TPS BIT(0)
> #define KXREG_INT_BIT_WUFS BIT(1)
> +#define KXREG_INT_MASK_TDTS (BIT(2) | BIT(3))
> +#define KXREG_INT_TAP_NONE 0
> +#define KXREG_INT_TAP_SINGLE BIT(2)
> +#define KXREG_INT_TAP_DOUBLE BIT(3)
> #define KXREG_INT_BIT_DRDY BIT(4)
>
> -/* KXCJK: INT_SOURCE2: motion detect */
> +/* KXCJK: INT_SOURCE2: motion detect, KXTF9: INT_SRC_REG1: tap detect */
> #define KXREG_MOTION_INT_BIT_ZP BIT(0)
> #define KXREG_MOTION_INT_BIT_ZN BIT(1)
> #define KXREG_MOTION_INT_BIT_YP BIT(2)
> @@ -97,6 +134,7 @@ enum kx_chipset {
> KXCJK1013,
> KXCJ91008,
> KXTJ21009,
> + KXTF9,
> KX_MAX_CHIPS /* this must be last */
> };
>
> @@ -162,6 +200,18 @@ static const struct kx_odr_map samp_freq_table[] = {
> static const char *const samp_freq_avail =
> "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600";
>
> +static const struct kx_odr_map kxtf9_samp_freq_table[] = {
> + { 25, 0, 0x01, 0x00 },
> + { 50, 0, 0x02, 0x01 },
> + { 100, 0, 0x03, 0x01 },
> + { 200, 0, 0x04, 0x01 },
> + { 400, 0, 0x05, 0x01 },
> + { 800, 0, 0x06, 0x01 },
> +};
> +
> +static const char *const kxtf9_samp_freq_avail =
> + "25 50 100 200 400 800";
> +
> /* Refer to section 4 of the specification */
> static const struct {
> int odr_bits;
> @@ -212,6 +262,15 @@ static const struct {
> {0x06, 3000},
> {0x07, 2000},
> },
> + /* KXTF9 */
> + {
> + {0x01, 81000},
> + {0x02, 41000},
> + {0x03, 21000},
> + {0x04, 11000},
> + {0x05, 5100},
> + {0x06, 2700},
> + },
> };
>
> static const struct {
> @@ -408,7 +467,7 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
>
> static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
> {
> - int ret;
> + int waketh_reg, ret;
>
> ret = i2c_smbus_write_byte_data(data->client,
> KXCJK1013_REG_WAKE_TIMER,
> @@ -419,8 +478,9 @@ static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
> return ret;
> }
>
> - ret = i2c_smbus_write_byte_data(data->client,
> - KXCJK1013_REG_WAKE_THRES,
> + waketh_reg = data->chipset == KXTF9 ?
> + KXTF9_REG_WAKE_THRESH : KXCJK1013_REG_WAKE_THRES;
> + ret = i2c_smbus_write_byte_data(data->client, waketh_reg,
> data->wake_thres);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
> @@ -592,9 +652,14 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
> if (ret < 0)
> return ret;
>
> - odr_setting = kxcjk1013_find_odr_value(samp_freq_table,
> - ARRAY_SIZE(samp_freq_table),
> - val, val2);
> + if (data->chipset == KXTF9)
> + odr_setting = kxcjk1013_find_odr_value(kxtf9_samp_freq_table,
> + ARRAY_SIZE(kxtf9_samp_freq_table),
> + val, val2);
> + else
> + odr_setting = kxcjk1013_find_odr_value(samp_freq_table,
> + ARRAY_SIZE(samp_freq_table),
> + val, val2);
>
> if (IS_ERR(odr_setting))
> return PTR_ERR(odr_setting);
> @@ -631,9 +696,14 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
>
> static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
> {
> - return kxcjk1013_convert_odr_value(samp_freq_table,
> - ARRAY_SIZE(samp_freq_table),
> - data->odr_bits, val, val2);
> + if (data->chipset == KXTF9)
> + return kxcjk1013_convert_odr_value(kxtf9_samp_freq_table,
> + ARRAY_SIZE(kxtf9_samp_freq_table),
> + data->odr_bits, val, val2);
> + else
> + return kxcjk1013_convert_odr_value(samp_freq_table,
> + ARRAY_SIZE(samp_freq_table),
> + data->odr_bits, val, val2);
> }
>
> static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
> @@ -888,7 +958,16 @@ static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> {
> - return sprintf(buf, "%s\n", samp_freq_avail);
> + struct iio_dev *indio_dev = dev_to_iio_dev(dev);
> + struct kxcjk1013_data *data = iio_priv(indio_dev);
> + const char *str;
> +
> + if (data->chipset == KXTF9)
> + str = kxtf9_samp_freq_avail;
> + else
> + str = samp_freq_avail;
> +
> + return sprintf(buf, "%s\n", str);
> }
>
> static IIO_DEVICE_ATTR(in_accel_sampling_frequency_available, S_IRUGO,
> @@ -1121,7 +1200,16 @@ static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
> }
>
> if (ret & KXREG_INT_BIT_WUFS) {
> - kxcjk1013_report_motion_event(indio_dev);
> + if (data->chipset == KXTF9)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_X_AND_Y_AND_Z,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_RISING),
> + data->timestamp);
> + else
> + kxcjk1013_report_motion_event(indio_dev);
> }
>
> ack_intr:
> @@ -1414,6 +1502,7 @@ static const struct i2c_device_id kxcjk1013_id[] = {
> {"kxcjk1013", KXCJK1013},
> {"kxcj91008", KXCJ91008},
> {"kxtj21009", KXTJ21009},
> + {"kxtf9", KXTF9},
> {"SMO8500", KXCJ91008},
> {}
> };
--
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