iio: magnetometer: ak8975: add AK09116 support

Add additional AK09116 to the magnetometer driver which has the same
register mapping and scaling as the AK09112 device.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20210825020738.35877-1-matt.ranostay@konsulko.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
index a0a1ffe..c552b2b 100644 (file)
--- a/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
+++ b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
@@ -17,11 +17,13 @@ properties:
           - asahi-kasei,ak8963
           - asahi-kasei,ak09911
           - asahi-kasei,ak09912
+          - asahi-kasei,ak09916
       - enum:
           - ak8975
           - ak8963
           - ak09911
           - ak09912
+          - ak09916
         deprecated: true
 
   reg:

diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig
index 74ad570..565ee41 100644 (file)
--- a/drivers/iio/magnetometer/Kconfig
+++ b/drivers/iio/magnetometer/Kconfig
@@ -28,7 +28,7 @@ config AK8975
        select IIO_TRIGGERED_BUFFER
        help
          Say yes here to build support for Asahi Kasei AK8975, AK8963,
-         AK09911 or AK09912 3-Axis Magnetometer.
+         AK09911, AK09912 or AK09916 3-Axis Magnetometer.
 
          To compile this driver as a module, choose M here: the module
          will be called ak8975.

diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index 42b8a26..6e82dc5 100644 (file)
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -78,6 +78,7 @@
  */
 #define AK09912_REG_WIA1               0x00
 #define AK09912_REG_WIA2               0x01
+#define AK09916_DEVICE_ID              0x09
 #define AK09912_DEVICE_ID              0x04
 #define AK09911_DEVICE_ID              0x05
 
@@ -208,6 +209,7 @@ enum asahi_compass_chipset {
        AK8963,
        AK09911,
        AK09912,
+       AK09916,
 };
 
 enum ak_ctrl_reg_addr {
@@ -345,6 +347,31 @@ static const struct ak_def ak_def_array[] = {
                        AK09912_REG_HXL,
                        AK09912_REG_HYL,
                        AK09912_REG_HZL},
+       },
+       {
+               .type = AK09916,
+               .raw_to_gauss = ak09912_raw_to_gauss,
+               .range = 32752,
+               .ctrl_regs = {
+                       AK09912_REG_ST1,
+                       AK09912_REG_ST2,
+                       AK09912_REG_CNTL2,
+                       AK09912_REG_ASAX,
+                       AK09912_MAX_REGS},
+               .ctrl_masks = {
+                       AK09912_REG_ST1_DRDY_MASK,
+                       AK09912_REG_ST2_HOFL_MASK,
+                       0,
+                       AK09912_REG_CNTL2_MODE_MASK},
+               .ctrl_modes = {
+                       AK09912_REG_CNTL_MODE_POWER_DOWN,
+                       AK09912_REG_CNTL_MODE_ONCE,
+                       AK09912_REG_CNTL_MODE_SELF_TEST,
+                       AK09912_REG_CNTL_MODE_FUSE_ROM},
+               .data_regs = {
+                       AK09912_REG_HXL,
+                       AK09912_REG_HYL,
+                       AK09912_REG_HZL},
        }
 };
 
@@ -425,6 +452,7 @@ static int ak8975_who_i_am(struct i2c_client *client,
        /*
         * Signature for each device:
         * Device   |  WIA1      |  WIA2
+        * AK09916  |  DEVICE_ID_|  AK09916_DEVICE_ID
         * AK09912  |  DEVICE_ID |  AK09912_DEVICE_ID
         * AK09911  |  DEVICE_ID |  AK09911_DEVICE_ID
         * AK8975   |  DEVICE_ID |  NA
@@ -452,6 +480,10 @@ static int ak8975_who_i_am(struct i2c_client *client,
                if (wia_val[1] == AK09912_DEVICE_ID)
                        return 0;
                break;
+       case AK09916:
+               if (wia_val[1] == AK09916_DEVICE_ID)
+                       return 0;
+               break;
        default:
                dev_err(&client->dev, "Type %d unknown\n", type);
        }
@@ -1057,6 +1089,7 @@ static const struct i2c_device_id ak8975_id[] = {
        {"AK8963", AK8963},
        {"ak09911", AK09911},
        {"ak09912", AK09912},
+       {"ak09916", AK09916},
        {}
 };
 
@@ -1071,6 +1104,8 @@ static const struct of_device_id ak8975_of_match[] = {
        { .compatible = "ak09911", },
        { .compatible = "asahi-kasei,ak09912", },
        { .compatible = "ak09912", },
+       { .compatible = "asahi-kasei,ak09916", },
+       { .compatible = "ak09916", },
        {}
 };
 MODULE_DEVICE_TABLE(of, ak8975_of_match);