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43ba588346
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>
38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
* GSL 1680 touchscreen controller
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Required properties:
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- compatible : "silead,gsl1680"
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- reg : I2C slave address of the chip (0x40)
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- interrupt-parent : a phandle pointing to the interrupt controller
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serving the interrupt for this chip
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- interrupts : interrupt specification for the gsl1680 interrupt
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- power-gpios : Specification for the pin connected to the gsl1680's
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shutdown input. This needs to be driven high to take the
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gsl1680 out of its low power state
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- touchscreen-size-x : See touchscreen.txt
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- touchscreen-size-y : See touchscreen.txt
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Optional properties:
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- firmware-name : File basename (string) for board specific firmware
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- touchscreen-inverted-x : See touchscreen.txt
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- touchscreen-inverted-y : See touchscreen.txt
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- touchscreen-swapped-x-y : See touchscreen.txt
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- silead,max-fingers : maximum number of fingers the touchscreen can detect
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Example:
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i2c@00000000 {
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gsl1680: touchscreen@40 {
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compatible = "silead,gsl1680";
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reg = <0x40>;
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interrupt-parent = <&pio>;
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interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
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power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
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touchscreen-size-x = <480>;
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touchscreen-size-y = <800>;
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touchscreen-inverted-x;
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touchscreen-swapped-x-y;
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silead,max-fingers = <5>;
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};
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};
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