iio: imu: nvi: v.320 ICM DMP support

- Add ICM DMP support to MPU/ICM driver.
- Add ICM DMP support to AKM compass driver.
- Add ICM Significant Motion sensor support.
- Fix AKM09911 support.
- Fix BMPx80 possible NULL ptr crash on auto-detect.
- Fix coverity 20453.

Coverity ID: 20453

Bug 1416640
Bug 1722103
Bug 100130656
Bug 200162691

Change-Id: I19ae42f2fdeb67eb45bc54f440366ecaf0583b44
Signed-off-by: Erik Lilliebjerg <elilliebjerg@nvidia.com>
Reviewed-on: http://git-master/r/1112474
Reviewed-by: Robert Collins <rcollins@nvidia.com>
Tested-by: Robert Collins <rcollins@nvidia.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/include/linux/mpu_iio.h b/include/linux/mpu_iio.h
index 6bf8e5dfa..24d515eb1 100644
--- a/include/linux/mpu_iio.h
+++ b/include/linux/mpu_iio.h
@@ -149,6 +149,11 @@ struct mpu_platform_data {
  *      3:0. If the port is to do write transactions then this
  *      value must be 1.  See MPU documentation for the other
  *      bits in I2C_SLVx_CTRL that can be applied by this byte.
+ * - dmp_ctrl: When the DMP in enabled, the number of
+ *      consecutive registers to read in 3:0. If the port is to
+ *      do write transactions then this value must be 1.  See
+ *      MPU documentation for the other bits in I2C_SLVx_CTRL
+ *      that can be applied by this byte.
  * - data_out: The data byte written if the port is configured
  *      to do writes (addr 7:7 = 0).
  * - delay_ms: The polling delay time between I2C transactions
@@ -185,6 +190,7 @@ struct nvi_mpu_port {
         u8 addr;
         u8 reg;
         u8 ctrl;
+        u8 dmp_ctrl;
         u8 data_out;
         unsigned int delay_ms;
         unsigned long delay_us;
@@ -195,8 +201,7 @@ struct nvi_mpu_port {
         signed char matrix[9];
         enum secondary_slave_type type;
         enum ext_slave_id id;
-        u8 asa[3];
-        int rate_scale;
+        u64 q30[3];
 };
 
 /**