+++ /dev/null
-/*
- * include/linux/pwm.h
- *
- * Copyright (C) 2008 Bill Gatliff < bgat@billgatliff.com>
- *
- * This program is free software; you may redistribute and/or modify
- * it under the terms of the GNU General Public License 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-#ifndef __LINUX_PWM_H
-#define __LINUX_PWM_H
-
-enum {
- PWM_CONFIG_DUTY_TICKS = BIT(0),
- PWM_CONFIG_PERIOD_TICKS = BIT(1),
- PWM_CONFIG_POLARITY = BIT(2),
- PWM_CONFIG_START = BIT(3),
- PWM_CONFIG_STOP = BIT(4),
-
- PWM_CONFIG_HANDLER = BIT(5),
-
- PWM_CONFIG_DUTY_NS = BIT(6),
- PWM_CONFIG_DUTY_PERCENT = BIT(7),
- PWM_CONFIG_PERIOD_NS = BIT(8),
-};
-
-struct pwm_channel;
-struct work_struct;
-
-typedef int (*pwm_handler_t)(struct pwm_channel *p, void *data);
-typedef void (*pwm_callback_t)(struct pwm_channel *p);
-
-struct pwm_channel_config {
- int config_mask;
- unsigned long duty_ticks;
- unsigned long period_ticks;
- int polarity;
-
- pwm_handler_t handler;
-
- unsigned long duty_ns;
- unsigned long period_ns;
- int duty_percent;
-};
-
-struct pwm_device {
- struct list_head list;
- spinlock_t list_lock;
- struct device *dev;
- struct module *owner;
- struct pwm_channel *channels;
-
- const char *bus_id;
- int nchan;
-
- int (*request) (struct pwm_channel *p);
- void (*free) (struct pwm_channel *p);
- int (*config) (struct pwm_channel *p,
- struct pwm_channel_config *c);
- int (*config_nosleep)(struct pwm_channel *p,
- struct pwm_channel_config *c);
- int (*synchronize) (struct pwm_channel *p,
- struct pwm_channel *to_p);
- int (*unsynchronize)(struct pwm_channel *p,
- struct pwm_channel *from_p);
- int (*set_callback) (struct pwm_channel *p,
- pwm_callback_t callback);
-};
-
-int pwm_register(struct pwm_device *pwm);
-int pwm_unregister(struct pwm_device *pwm);
-
-enum {
- FLAG_REQUESTED = 0,
- FLAG_STOP = 1,
-};
-
-struct pwm_channel {
- struct list_head list;
- struct pwm_device *pwm;
- const char *requester;
- pid_t pid;
- int chan;
- unsigned long flags;
- unsigned long tick_hz;
-
- spinlock_t lock;
- struct completion complete;
-
- pwm_callback_t callback;
-
- struct work_struct handler_work;
- pwm_handler_t handler;
- void *handler_data;
-
- int active_high;
- unsigned long period_ticks;
- unsigned long duty_ticks;
-};
-
-struct gpio_pwm_platform_data {
- int gpio;
-};
-
-struct pwm_channel *
-pwm_request(const char *bus_id, int chan,
- const char *requester);
-
-void pwm_free(struct pwm_channel *pwm);
-
-int pwm_config_nosleep(struct pwm_channel *pwm,
- struct pwm_channel_config *c);
-
-int pwm_config(struct pwm_channel *pwm,
- struct pwm_channel_config *c);
-
-unsigned long pwm_ns_to_ticks(struct pwm_channel *pwm,
- unsigned long nsecs);
-
-unsigned long pwm_ticks_to_ns(struct pwm_channel *pwm,
- unsigned long ticks);
-
-int pwm_set_period_ns(struct pwm_channel *pwm,
- unsigned long period_ns);
-
-unsigned long int pwm_get_period_ns(struct pwm_channel *pwm);
-
-int pwm_set_duty_ns(struct pwm_channel *pwm,
- unsigned long duty_ns);
-
-int pwm_set_duty_percent(struct pwm_channel *pwm,
- int percent);
-
-unsigned long pwm_get_duty_ns(struct pwm_channel *pwm);
-
-int pwm_set_polarity(struct pwm_channel *pwm,
- int active_high);
-
-int pwm_start(struct pwm_channel *pwm);
-
-int pwm_stop(struct pwm_channel *pwm);
-
-int pwm_set_handler(struct pwm_channel *pwm,
- pwm_handler_t handler,
- void *data);
-
-int pwm_synchronize(struct pwm_channel *p,
- struct pwm_channel *to_p);
-
-
-int pwm_unsynchronize(struct pwm_channel *p,
- struct pwm_channel *from_p);
-
-
-#endif /* __LINUX_PWM_H */
projects / openwrt / svn-archive / archive.git / blobdiff