[PATCH v9 24/55] Input: atmel_mxt_ts - add config checksum attribute to sysfs
From: Jiada Wang <hidden>
Date: 2020-03-25 13:35:21
Also in:
lkml
Subsystem:
atmel maxtouch driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Nick Dyer, Dmitry Torokhov, Linus Torvalds
From: karl tsou <redacted> Add config checksum attribute to sysfs Signed-off-by: karl tsou <redacted> Signed-off-by: Nick Dyer <redacted> (cherry picked from ndyer/linux/for-upstream commit 03477477ddbe5dcad42853ab3f84166a8f807acf) [gdavis: Forward port and fix conflicts.] Signed-off-by: George G. Davis <redacted> [jiada: Add commit description Rename mxt_config_crc_show to config_crc_show Replace DEVICE_ATTR with DEVICE_ATTR_RO] Signed-off-by: Jiada Wang <redacted> --- drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index dfc20c0ca0a5..67931cf64629 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c@@ -3128,6 +3128,15 @@ static int mxt_configure_objects(struct mxt_data *data, return error; } +/* Configuration crc check sum is returned as hex xxxxxx */ +static ssize_t config_crc_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + + return scnprintf(buf, PAGE_SIZE, "%06x\n", data->config_crc); +} + /* Firmware Version is returned as Major.Minor.Build */ static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -3481,12 +3490,14 @@ static DEVICE_ATTR_RO(fw_version); static DEVICE_ATTR_RO(hw_version); static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); static DEVICE_ATTR_WO(update_cfg); +static DEVICE_ATTR_RO(config_crc); static struct attribute *mxt_attrs[] = { &dev_attr_fw_version.attr, &dev_attr_hw_version.attr, &dev_attr_object.attr, &dev_attr_update_cfg.attr, + &dev_attr_config_crc.attr, NULL };
--
2.17.1