diff options
| author | Michael Tretter <m.tretter@pengutronix.de> | 2026-02-17 22:53:08 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2026-02-17 23:04:43 -0800 |
| commit | ffcdb6856a1be07ad46b38926dfb3bc053e98a8f (patch) | |
| tree | cb989d70d02d9cbb2694aad4416c6d97257fa457 /drivers | |
| parent | 004703baa5a9352182307dd9a747e9411802df32 (diff) | |
Input: st1232 - expose firmware version via sysfs
Allow user space programs to read the firmware version and revision of
the touch controller from the sysfs.
Suggested-by: Khalid Talash <ktalash@topcon.com>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://patch.msgid.link/20260123-input-st1232-firmware-version-v1-2-32df7eefdafe@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/st1232.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index 3dfee15fb3ad..9b266927b7fe 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -69,6 +69,34 @@ struct st1232_ts_data { u32 fw_revision; }; +static ssize_t fw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct st1232_ts_data *st1232_ts = i2c_get_clientdata(client); + + return sysfs_emit(buf, "%u\n", st1232_ts->fw_version); +} + +static ssize_t fw_revision_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct st1232_ts_data *st1232_ts = i2c_get_clientdata(client); + + return sysfs_emit(buf, "%08x\n", st1232_ts->fw_revision); +} + +static DEVICE_ATTR_RO(fw_version); +static DEVICE_ATTR_RO(fw_revision); + +static struct attribute *st1232_attrs[] = { + &dev_attr_fw_version.attr, + &dev_attr_fw_revision.attr, + NULL, +}; +ATTRIBUTE_GROUPS(st1232); + static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg, unsigned int n) { @@ -444,6 +472,7 @@ static struct i2c_driver st1232_ts_driver = { .driver = { .name = ST1232_TS_NAME, .of_match_table = st1232_ts_dt_ids, + .dev_groups = st1232_groups, .probe_type = PROBE_PREFER_ASYNCHRONOUS, .pm = pm_sleep_ptr(&st1232_ts_pm_ops), }, |