| Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame^] | 1 | /* Copyright (c) 2010, Code Aurora Forum. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | #ifndef __PMIC8058_PWM_H__ |
| 14 | #define __PMIC8058_PWM_H__ |
| 15 | |
| 16 | /* The MAX value is computation limit. Hardware limit is 393 seconds. */ |
| 17 | #define PM_PWM_PERIOD_MAX (274 * USEC_PER_SEC) |
| 18 | /* The MIN value is hardware limit. */ |
| 19 | #define PM_PWM_PERIOD_MIN 7 /* micro seconds */ |
| 20 | |
| 21 | struct pm8058_pwm_pdata { |
| 22 | int (*config)(struct pwm_device *pwm, int ch, int on); |
| 23 | int (*enable)(struct pwm_device *pwm, int ch, int on); |
| 24 | }; |
| 25 | |
| 26 | #define PM_PWM_LUT_SIZE 64 |
| 27 | #define PM_PWM_LUT_DUTY_TIME_MAX 512 /* ms */ |
| 28 | #define PM_PWM_LUT_PAUSE_MAX (7000 * PM_PWM_LUT_DUTY_TIME_MAX) |
| 29 | |
| 30 | /* Flags for Look Up Table */ |
| 31 | #define PM_PWM_LUT_LOOP 0x01 |
| 32 | #define PM_PWM_LUT_RAMP_UP 0x02 |
| 33 | #define PM_PWM_LUT_REVERSE 0x04 |
| 34 | #define PM_PWM_LUT_PAUSE_HI_EN 0x10 |
| 35 | #define PM_PWM_LUT_PAUSE_LO_EN 0x20 |
| 36 | |
| 37 | #define PM_PWM_LUT_NO_TABLE 0x100 |
| 38 | |
| 39 | /* PWM LED ID */ |
| 40 | #define PM_PWM_LED_0 0 |
| 41 | #define PM_PWM_LED_1 1 |
| 42 | #define PM_PWM_LED_2 2 |
| 43 | #define PM_PWM_LED_KPD 3 |
| 44 | #define PM_PWM_LED_FLASH 4 |
| 45 | #define PM_PWM_LED_FLASH1 5 |
| 46 | |
| 47 | /* PWM LED configuration mode */ |
| 48 | #define PM_PWM_CONF_NONE 0x0 |
| 49 | #define PM_PWM_CONF_PWM1 0x1 |
| 50 | #define PM_PWM_CONF_PWM2 0x2 |
| 51 | #define PM_PWM_CONF_PWM3 0x3 |
| 52 | #define PM_PWM_CONF_DTEST1 0x4 |
| 53 | #define PM_PWM_CONF_DTEST2 0x5 |
| 54 | #define PM_PWM_CONF_DTEST3 0x6 |
| 55 | #define PM_PWM_CONF_DTEST4 0x7 |
| 56 | |
| 57 | /* |
| 58 | * pm8058_pwm_lut_config - change a PWM device configuration to use LUT |
| 59 | * |
| 60 | * @pwm: the PWM device |
| 61 | * @period_us: period in micro second |
| 62 | * @duty_pct: arrary of duty cycles in percent, like 20, 50. |
| 63 | * @duty_time_ms: time for each duty cycle in millisecond |
| 64 | * @start_idx: start index in lookup table from 0 to MAX-1 |
| 65 | * @idx_len: number of index |
| 66 | * @pause_lo: pause time in millisecond at low index |
| 67 | * @pause_hi: pause time in millisecond at high index |
| 68 | * @flags: control flags |
| 69 | * |
| 70 | */ |
| 71 | int pm8058_pwm_lut_config(struct pwm_device *pwm, int period_us, |
| 72 | int duty_pct[], int duty_time_ms, int start_idx, |
| 73 | int len, int pause_lo, int pause_hi, int flags); |
| 74 | |
| 75 | /* |
| 76 | * pm8058_pwm_lut_enable - control a PWM device to start/stop LUT ramp |
| 77 | * |
| 78 | * @pwm: the PWM device |
| 79 | * @start: to start (1), or stop (0) |
| 80 | */ |
| 81 | int pm8058_pwm_lut_enable(struct pwm_device *pwm, int start); |
| 82 | |
| 83 | int pm8058_pwm_set_dtest(struct pwm_device *pwm, int enable); |
| 84 | |
| 85 | int pm8058_pwm_config_led(struct pwm_device *pwm, int id, |
| 86 | int mode, int max_current); |
| 87 | |
| 88 | #endif /* __PMIC8058_PWM_H__ */ |