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1 /* |
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2 * Copyright (C) 2007 Atmel Corporation |
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3 * |
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4 * Driver for the AT32AP700X PS/2 controller (PSIF). |
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5 * |
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6 * This program is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 as published |
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8 * by the Free Software Foundation. |
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9 */ |
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10 |
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11 #ifndef __INCLUDE_ATMEL_PWM_BL_H |
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12 #define __INCLUDE_ATMEL_PWM_BL_H |
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13 |
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14 /** |
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15 * struct atmel_pwm_bl_platform_data |
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16 * @pwm_channel: which PWM channel in the PWM module to use. |
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17 * @pwm_frequency: PWM frequency to generate, the driver will try to be as |
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18 * close as the prescaler allows. |
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19 * @pwm_compare_max: value to use in the PWM channel compare register. |
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20 * @pwm_duty_max: maximum duty cycle value, must be less than or equal to |
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21 * pwm_compare_max. |
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22 * @pwm_duty_min: minimum duty cycle value, must be less than pwm_duty_max. |
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23 * @pwm_active_low: set to one if the low part of the PWM signal increases the |
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24 * brightness of the backlight. |
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25 * @gpio_on: GPIO line to control the backlight on/off, set to -1 if not used. |
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26 * @on_active_low: set to one if the on/off signal is on when GPIO is low. |
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27 * |
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28 * This struct must be added to the platform device in the board code. It is |
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29 * used by the atmel-pwm-bl driver to setup the GPIO to control on/off and the |
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30 * PWM device. |
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31 */ |
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32 struct atmel_pwm_bl_platform_data { |
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33 unsigned int pwm_channel; |
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34 unsigned int pwm_frequency; |
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35 unsigned int pwm_compare_max; |
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36 unsigned int pwm_duty_max; |
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37 unsigned int pwm_duty_min; |
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38 unsigned int pwm_active_low; |
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39 int gpio_on; |
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40 unsigned int on_active_low; |
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41 }; |
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42 |
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43 #endif /* __INCLUDE_ATMEL_PWM_BL_H */ |