| /* Copyright (c) 2010, Code Aurora Forum. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| #ifndef __PMIC8058_PWM_H__ |
| #define __PMIC8058_PWM_H__ |
| |
| /* The MAX value is computation limit. Hardware limit is 393 seconds. */ |
| #define PM_PWM_PERIOD_MAX (274 * USEC_PER_SEC) |
| /* The MIN value is hardware limit. */ |
| #define PM_PWM_PERIOD_MIN 7 /* micro seconds */ |
| |
| struct pm8058_pwm_pdata { |
| int (*config)(struct pwm_device *pwm, int ch, int on); |
| int (*enable)(struct pwm_device *pwm, int ch, int on); |
| }; |
| |
| #define PM_PWM_LUT_SIZE 64 |
| #define PM_PWM_LUT_DUTY_TIME_MAX 512 /* ms */ |
| #define PM_PWM_LUT_PAUSE_MAX (7000 * PM_PWM_LUT_DUTY_TIME_MAX) |
| |
| /* Flags for Look Up Table */ |
| #define PM_PWM_LUT_LOOP 0x01 |
| #define PM_PWM_LUT_RAMP_UP 0x02 |
| #define PM_PWM_LUT_REVERSE 0x04 |
| #define PM_PWM_LUT_PAUSE_HI_EN 0x10 |
| #define PM_PWM_LUT_PAUSE_LO_EN 0x20 |
| |
| #define PM_PWM_LUT_NO_TABLE 0x100 |
| |
| /* PWM LED ID */ |
| #define PM_PWM_LED_0 0 |
| #define PM_PWM_LED_1 1 |
| #define PM_PWM_LED_2 2 |
| #define PM_PWM_LED_KPD 3 |
| #define PM_PWM_LED_FLASH 4 |
| #define PM_PWM_LED_FLASH1 5 |
| |
| /* PWM LED configuration mode */ |
| #define PM_PWM_CONF_NONE 0x0 |
| #define PM_PWM_CONF_PWM1 0x1 |
| #define PM_PWM_CONF_PWM2 0x2 |
| #define PM_PWM_CONF_PWM3 0x3 |
| #define PM_PWM_CONF_DTEST1 0x4 |
| #define PM_PWM_CONF_DTEST2 0x5 |
| #define PM_PWM_CONF_DTEST3 0x6 |
| #define PM_PWM_CONF_DTEST4 0x7 |
| |
| /* |
| * pm8058_pwm_lut_config - change a PWM device configuration to use LUT |
| * |
| * @pwm: the PWM device |
| * @period_us: period in micro second |
| * @duty_pct: arrary of duty cycles in percent, like 20, 50. |
| * @duty_time_ms: time for each duty cycle in millisecond |
| * @start_idx: start index in lookup table from 0 to MAX-1 |
| * @idx_len: number of index |
| * @pause_lo: pause time in millisecond at low index |
| * @pause_hi: pause time in millisecond at high index |
| * @flags: control flags |
| * |
| */ |
| int pm8058_pwm_lut_config(struct pwm_device *pwm, int period_us, |
| int duty_pct[], int duty_time_ms, int start_idx, |
| int len, int pause_lo, int pause_hi, int flags); |
| |
| /* |
| * pm8058_pwm_lut_enable - control a PWM device to start/stop LUT ramp |
| * |
| * @pwm: the PWM device |
| * @start: to start (1), or stop (0) |
| */ |
| int pm8058_pwm_lut_enable(struct pwm_device *pwm, int start); |
| |
| int pm8058_pwm_set_dtest(struct pwm_device *pwm, int enable); |
| |
| int pm8058_pwm_config_led(struct pwm_device *pwm, int id, |
| int mode, int max_current); |
| |
| #endif /* __PMIC8058_PWM_H__ */ |