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mfd: iqs62x: Provide device revision to sub-devices

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Individual sub-devices may elect to make decisions based on the
specific revision of silicon encountered at probe. This data is
already read from the device, but is not retained.

Pass this data on to the sub-devices by adding the software and
hardware numbers (registers 0x01 and 0x02, respectively) to the
iqs62x_core struct.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Jeff LaBundy 2022-01-23 13:01:05 -06:00 committed by Lee Jones
parent e783362eb5
commit 1de785a580
2 changed files with 10 additions and 3 deletions
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6
drivers/mfd/iqs62x.c
View File

@ -898,7 +898,6 @@ static int iqs62x_probe(struct i2c_client *client)
struct iqs62x_info info;
unsigned int val;
int ret, i, j;
u8 sw_num = 0;
const char *fw_name = NULL;
iqs62x = devm_kzalloc(&client->dev, sizeof(*iqs62x), GFP_KERNEL);
@ -949,7 +948,8 @@ static int iqs62x_probe(struct i2c_client *client)
if (info.sw_num < iqs62x->dev_desc->sw_num)
continue;
sw_num = info.sw_num;
iqs62x->sw_num = info.sw_num;
iqs62x->hw_num = info.hw_num;
/*
* Read each of the device's designated calibration registers,
@ -985,7 +985,7 @@ static int iqs62x_probe(struct i2c_client *client)
return -EINVAL;
}
if (!sw_num) {
if (!iqs62x->sw_num) {
dev_err(&client->dev, "Unrecognized software number: 0x%02X\n",
info.sw_num);
return -EINVAL;

7
include/linux/mfd/iqs62x.h
View File

@ -14,6 +14,11 @@
#define IQS624_PROD_NUM 0x43
#define IQS625_PROD_NUM 0x4E
#define IQS620_HW_NUM_V0 0x82
#define IQS620_HW_NUM_V1 IQS620_HW_NUM_V0
#define IQS620_HW_NUM_V2 IQS620_HW_NUM_V0
#define IQS620_HW_NUM_V3 0x92
#define IQS621_ALS_FLAGS 0x16
#define IQS622_ALS_FLAGS 0x14
@ -129,6 +134,8 @@ struct iqs62x_core {
struct completion fw_done;
enum iqs62x_ui_sel ui_sel;
unsigned long event_cache;
u8 sw_num;
u8 hw_num;
};
extern const struct iqs62x_event_desc iqs62x_events[IQS62X_NUM_EVENTS];