linux-imx

/*

 * drivers/input/tablet/wacom_wac.c

 *

 *  USB Wacom tablet support - Wacom specific code

 *

 */

​

/*

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */

​

#include "wacom_wac.h"

#include "wacom.h"

#include <linux/input/mt.h>

​

/* resolution for penabled devices */

#define WACOM_PL_RES        20

#define WACOM_PENPRTN_RES   40

#define WACOM_VOLITO_RES    50

#define WACOM_GRAPHIRE_RES  80

#define WACOM_INTUOS_RES    100

#define WACOM_INTUOS3_RES   200

​

/* Newer Cintiq and DTU have an offset between tablet and screen areas */

#define WACOM_DTU_OFFSET    200

#define WACOM_CINTIQ_OFFSET 400

​

/*

 * Scale factor relating reported contact size to logical contact area.

 * 2^14/pi is a good approximation on Intuos5 and 3rd-gen Bamboo

 */

#define WACOM_CONTACT_AREA_SCALE 2607

​

static bool touch_arbitration = 1;

module_param(touch_arbitration, bool, 0644);

MODULE_PARM_DESC(touch_arbitration, " on (Y) off (N)");

​

static void wacom_report_numbered_buttons(struct input_dev *input_dev,

                int button_count, int mask);

​

static int wacom_numbered_button_to_key(int n);

​

static void wacom_update_led(struct wacom *wacom, int button_count, int mask,

                 int group);

/*

 * Percent of battery capacity for Graphire.

 * 8th value means AC online and show 100% capacity.

 */

static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };

​

/*

 * Percent of battery capacity for Intuos4 WL, AC has a separate bit.

 */

static unsigned short batcap_i4[8] = { 1, 15, 30, 45, 60, 70, 85, 100 };

​

static void __wacom_notify_battery(struct wacom_battery *battery,

                   int bat_status, int bat_capacity,

                   bool bat_charging, bool bat_connected,

                   bool ps_connected)

{

    bool changed = battery->bat_status       != bat_status    ||

               battery->battery_capacity != bat_capacity  ||

               battery->bat_charging     != bat_charging  ||

               battery->bat_connected    != bat_connected ||

               battery->ps_connected     != ps_connected;

​

    if (changed) {

        battery->bat_status = bat_status;

        battery->battery_capacity = bat_capacity;

        battery->bat_charging = bat_charging;

        battery->bat_connected = bat_connected;

        battery->ps_connected = ps_connected;

​

        if (battery->battery)

            power_supply_changed(battery->battery);

    }

}

​

static void wacom_notify_battery(struct wacom_wac *wacom_wac,

    int bat_status, int bat_capacity, bool bat_charging,

    bool bat_connected, bool ps_connected)

{

    struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);

​

    __wacom_notify_battery(&wacom->battery, bat_status, bat_capacity,

                   bat_charging, bat_connected, ps_connected);

}

​

static int wacom_penpartner_irq(struct wacom_wac *wacom)