| FocalTech touch controller |
| |
| The focaltech controller is connected to host processor |
| via i2c. The controller generates interrupts when the |
| user touches the panel. The host controller is expected |
| to read the touch coordinates over i2c and pass the coordinates |
| to the rest of the system. |
| |
| Required properties: |
| |
| - compatible : should be "focaltech,5x06" |
| - reg : i2c slave address of the device |
| - interrupt-parent : parent of interrupt |
| - interrupts : touch sample interrupt to indicate presense or release |
| of fingers on the panel. |
| - vdd-supply : Power supply needed to power up the device |
| - vcc_i2c-supply : Power source required to power up i2c bus |
| - focaltech,family-id : family identification of the controller |
| - focaltech,irq-gpio : irq gpio which is to provide interrupts to host, |
| same as "interrupts" node. It will also |
| contain active low or active high information. |
| - focaltech,reset-gpio : reset gpio to control the reset of chip |
| - focaltech,display-coords : display coordinates in pixels. It is a four |
| tuple consisting of min x, min y, max x and |
| max y values |
| - focaltech,name : name of the controller |
| - focaltech,group-id : group id of this device |
| - focaltech,hard-reset-delay-ms : hard reset delay in ms |
| - focaltech,soft-reset-delay-ms : soft reset delay in ms |
| |
| Optional properties: |
| |
| - focaltech,panel-coords : panel coordinates for the chip in pixels. |
| It is a four tuple consisting of min x, |
| min y, max x and max y values |
| - focaltech,i2c-pull-up : to specify pull up is required |
| - focaltech,no-force-update : to specify force update is allowed |
| - focaltech,button-map : button map of key codes. The number |
| of key codes depend on panel |
| - focaltech,fw-name : specify the firmware file name |
| - focaltech,fw-delay-aa-ms : specify the "aa" delay in ms for firmware upgrade |
| - focaltech,fw-delay-55-ms : specify the "55" delay in ms for firmware upgrade |
| - focaltech,fw-upgrade-id1 : specify the upgrade id1 for firmware upgrade |
| - focaltech,fw-upgrade-id2 : specify the upgrade id2 for firmware upgrade |
| - focaltech,fw-delay-readid-ms : specify the read id delay in ms for firmware upgrade |
| - focaltech,fw-delay-era-flsh-ms : specify the erase flash delay in ms for firmware upgrade |
| - focaltech,fw-auto-cal : specify whether calibration is needed after firmware upgrade |
| - focaltech,fw-vkey-support : specify if virtual keys are supported through firmware |
| - focaltech,ignore-id-check : specify ignore family-id check |
| |
| Example: |
| i2c@f9923000{ |
| focaltech@38{ |
| compatible = "focaltech,5x06"; |
| reg = <0x38>; |
| interrupt-parent = <&msmgpio>; |
| interrupts = <1 0x2>; |
| vdd-supply = <&pm8110_l19>; |
| vcc_i2c-supply = <&pm8110_l14>; |
| focaltech,name = "ft6x06"; |
| focaltech,family-id = <0x06>; |
| focaltech,reset-gpio = <&msmgpio 0 0x00>; |
| focaltech,irq-gpio = <&msmgpio 1 0x00>; |
| focaltech,display-coords = <0 0 480 800>; |
| focaltech,panel-coords = <0 0 480 800>; |
| focaltech,button-map= <139 102 158>; |
| focaltech,no-force-update; |
| focaltech,i2c-pull-up; |
| focaltech,group-id = <1>; |
| focaltech,hard-reset-delay = <20>; |
| focaltech,soft-reset-delay = <150>; |
| focaltech,num-max-touches = <2>; |
| focaltech,fw-name = "ft_8610_qrd_fw.bin"; |
| focaltech,fw-delay-aa-ms = <100>; |
| focaltech,fw-delay-55-ms = <30>; |
| focaltech,fw-upgrade-id1 = <0x79>; |
| focaltech,fw-upgrade-id2 = <0x08>; |
| focaltech,fw-delay-readid-ms = <10>; |
| focaltech,fw-delay-era-flsh-ms = <2000>; |
| focaltech,fw-auto-cal; |
| }; |
| }; |