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Commit 91d36830 authored by Amy Maloche's avatar Amy Maloche Committed by Gerrit - the friendly Code Review server
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input: atmel_maxtouch_ts: add device tree support 



Enable device tree support along with necessary
platform data entries.

Change-Id: If50b937d67f38b76e2224f161c7b9b0a2392572b
Signed-off-by: default avatarAmy Maloche <amaloche@codeaurora.org>
parent 0ff80c12

Documentation/devicetree/bindings/input/touchscreen/atmel-maxtouch-ts.txt

0 → 100644
+38 −0
Original line number Diff line number Diff line 
Atmel touch controller



Required properties:



 - compatible	: should be "atmel,maxtouch-ts"

 - 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.

 - atmel,panel-coords	: touch panel minimum x, minimum y, maximum x and

				maximum y resolution

 - atmel,display-coords : LCD display minimum x, minimum y, maximum x and

				maximum y resolution

 - vdd-supply	: Analog power supply needed to power device

 - avcc-supply		: Power source required to pull up i2c bus

 - atmel,irq-gpio	: irq gpio

 - atmel,reset-gpio	: reset gpio



Optional property:

 - atmel,bl-addr		: bootloader address, by default is looked up

					in mxt_slave_addresses structure

 - atmel,key-codes		: key codes corresponding to keyarray object



Example:

	i2c@f9966000 {

		atmel_maxtouch_ts@4a {

			compatible = "atmel,maxtouch-ts";

			reg = <0x4a>

			interrupt-parent = <&msmgpio>

			interrupts = <48 0x0>;

			vdd-supply = <&pm8941_l18>;

			avdd-supply = <&pm8941_lvs1>;

			atmel,panel-coords = <0 0 479 799>;

			atmel,display-coords = <0 0 479 799>;

			atmel,irq-gpio = <&msmgpio 48 0>;

			atmel,reset-gpio = <&msmgpio 26 0>;

		};

	};

drivers/input/touchscreen/atmel_maxtouch_ts.c

+400 −271

File changed.

Preview size limit exceeded, changes collapsed.

include/linux/input/atmel_maxtouch_ts.h

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Original line number Diff line number Diff line 
/*

 * Atmel maXTouch Touchscreen driver

 *

 * Copyright (c) 2014, The Linux Foundation.  All rights reserved.

 *

 * Linux foundation chooses to take subject only to the GPLv2 license terms,

 * and distributes only under these terms.

 *

 * Copyright (C) 2010 Samsung Electronics Co.Ltd

 * Author: Joonyoung Shim <jy0922.shim@samsung.com>

 *
@@ -10,20 +15,45 @@ 
 * option) any later version.

 */



#ifndef __LINUX_ATMEL_MXT_TS_H

#define __LINUX_ATMEL_MXT_TS_H

#ifndef __LINUX_ATMEL_MAXTOUCH_TS_H

#define __LINUX_ATMEL_MAXTOUCH_TS_H



#include <linux/types.h>



/* The platform data for the Atmel maXTouch touchscreen driver */

struct mxt_platform_data {

	unsigned long irqflags;

	unsigned long resetflags;

	int reset_gpio;

	int irq_gpio;

	u8 t19_num_keys;

	const unsigned int *t19_keymap;

	int t15_num_keys;

	const unsigned int *t15_keymap;

	unsigned long gpio_reset;

	const char *cfg_name;



	const struct mxt_config_info *config_array;

	size_t config_array_size;



	/* touch panel's minimum and maximum coordinates */

	u32 panel_minx;

	u32 panel_maxx;

	u32 panel_miny;

	u32 panel_maxy;



	/* display's minimum and maximum coordinates */

	u32 disp_minx;

	u32 disp_maxx;

	u32 disp_miny;

	u32 disp_maxy;



	int *key_codes;

	u8 bl_addr;



	u8(*read_chg) (void);

	int (*init_hw) (bool);

	int (*power_on) (bool);

};



#endif /* __LINUX_ATMEL_MXT_TS_H */
 
#endif /* __LINUX_ATMEL_MAXTOUCH_TS_H */