system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-11-05 18:23:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

iio: magnetometer: ak8975: Add AK09118 support

Browse source 
Add additional AK09118 to the magnetometer driver which has the same
register mapping and scaling as the AK09112 device.

Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
Link: https://patch.msgid.link/20240819-ak09918-v4-4-f0734d14cfb9@mainlining.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Danila Tikhonov 2024-08-19 00:29:42 +02:00 committed by Jonathan Cameron
parent c19bf7faea
commit 89cf93bfb3
2 changed files with 38 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/iio/magnetometer/Kconfig
View file

@ -39,7 +39,7 @@ config AK8975
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Asahi Kasei AK8975, AK8963,
AK09911, AK09912 or AK09916 3-Axis Magnetometer.
AK09911, AK09912, AK09916 or AK09918 3-Axis Magnetometer.
To compile this driver as a module, choose M here: the module
will be called ak8975.

37
drivers/iio/magnetometer/ak8975.c
View file

@ -78,6 +78,7 @@
*/
#define AK09912_REG_WIA1 0x00
#define AK09912_REG_WIA2 0x01
#define AK09918_DEVICE_ID 0x0C
#define AK09916_DEVICE_ID 0x09
#define AK09912_DEVICE_ID 0x04
#define AK09911_DEVICE_ID 0x05
@ -209,6 +210,7 @@ enum asahi_compass_chipset {
AK09911,
AK09912,
AK09916,
AK09918,
};
enum ak_ctrl_reg_addr {
@ -371,6 +373,34 @@ static const struct ak_def ak_def_array[] = {
AK09912_REG_HXL,
AK09912_REG_HYL,
AK09912_REG_HZL},
},
[AK09918] = {
/* ak09918 is register compatible with ak09912 this is for avoid
* unknown id messages.
*/
.type = AK09918,
.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},
}
};
@ -452,6 +482,7 @@ static int ak8975_who_i_am(struct i2c_client *client,
/*
* Signature for each device:
* Device | WIA1 | WIA2
* AK09918 | DEVICE_ID_| AK09918_DEVICE_ID
* AK09916 | DEVICE_ID_| AK09916_DEVICE_ID
* AK09912 | DEVICE_ID | AK09912_DEVICE_ID
* AK09911 | DEVICE_ID | AK09911_DEVICE_ID
@ -484,6 +515,10 @@ static int ak8975_who_i_am(struct i2c_client *client,
if (wia_val[1] == AK09916_DEVICE_ID)
return 0;
break;
case AK09918:
if (wia_val[1] == AK09918_DEVICE_ID)
return 0;
break;
}
dev_info(&client->dev, "Device ID %x is unknown.\n", wia_val[1]);
@ -1071,6 +1106,7 @@ static const struct i2c_device_id ak8975_id[] = {
{"ak09911", (kernel_ulong_t)&ak_def_array[AK09911] },
{"ak09912", (kernel_ulong_t)&ak_def_array[AK09912] },
{"ak09916", (kernel_ulong_t)&ak_def_array[AK09916] },
{"ak09918", (kernel_ulong_t)&ak_def_array[AK09918] },
{}
};
MODULE_DEVICE_TABLE(i2c, ak8975_id);
@ -1085,6 +1121,7 @@ static const struct of_device_id ak8975_of_match[] = {
{ .compatible = "asahi-kasei,ak09912", .data = &ak_def_array[AK09912] },
{ .compatible = "ak09912", .data = &ak_def_array[AK09912] },
{ .compatible = "asahi-kasei,ak09916", .data = &ak_def_array[AK09916] },
{ .compatible = "asahi-kasei,ak09918", .data = &ak_def_array[AK09918] },
{}
};
MODULE_DEVICE_TABLE(of, ak8975_of_match);