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Input: silead_gsl1680 - document firmware-name, fix implementation 

The driver has supported touchscreen-fw-name to specify the firmware to
load since it has been merged, but this was omitted from the dt-binding
documentation.

During review of adding touchscreen-fw-name to the binding documentation
it was brought up that there is a standard property name called
"firmware-name" for this, which should be used.

Since there are no users of touchscreen-fw-name yet, this commit
adds documentation of "firmware-name" to the dt-binding documentation
and switches the driver over to use this.

This commit also makes the driver add a "silead/" prefix to the
firmware name from dt before calling request_firmware. That the
firmware files are stored under /lib/firmware/silead under Linux
is an implementation detail and does not belong in devicetree.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede 2016-09-07 19:25:37 -07:00 committed by Dmitry Torokhov
parent e3a888a4bf
commit 43ba588346
2 changed files with 4 additions and 2 deletions
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1
Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
View File

@ -13,6 +13,7 @@ Required properties:
- touchscreen-size-y : See touchscreen.txt
Optional properties:
- firmware-name : File basename (string) for board specific firmware
- touchscreen-inverted-x : See touchscreen.txt
- touchscreen-inverted-y : See touchscreen.txt
- touchscreen-swapped-x-y : See touchscreen.txt

5
drivers/input/touchscreen/silead.c
View File

@ -390,9 +390,10 @@ static void silead_ts_read_props(struct i2c_client *client)
data->max_fingers = 5; /* Most devices handle up-to 5 fingers */
}
error = device_property_read_string(dev, "touchscreen-fw-name", &str);
error = device_property_read_string(dev, "firmware-name", &str);
if (!error)
snprintf(data->fw_name, sizeof(data->fw_name), "%s", str);
snprintf(data->fw_name, sizeof(data->fw_name),
"silead/%s", str);
else
dev_dbg(dev, "Firmware file name read error. Using default.");
}