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https://github.com/hardkernel/kernel_common_drivers.git
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wanwei.jiang
5b9119c59f
PD#SWPL-69666 Problem: porting irblaster driver Solution: porting irblaster driver Verify: s4d Change-Id: If15957c9c4072bb08bf5454cc3e81eac646eb1ad Signed-off-by: wanwei.jiang <wanwei.jiang@amlogic.com>
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
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/*
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* Copyright (c) 2019 Amlogic, Inc. All rights reserved.
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*/
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#ifndef __LINUX_IRBLASTER_H
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#define __LINUX_IRBLASTER_H
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/of.h>
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#define MAX_PLUSE 256
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#define PS_SIZE 10
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extern int irblaster_debug;
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struct irblaster_chip;
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static DEFINE_MUTEX(irblaster_lock);
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static LIST_HEAD(irblaster_chips);
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/**
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* enum irblaster_idle - Whether the controller is occupied
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* @IRBLASTER_EXPORTED: Controlled by the sysfs sys/class/irblaster
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* @IRBLASTER_REQUESTED: Controlled by consumer driver
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*/
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enum irblaster_idle {
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IRBLASTER_EXPORTED,
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IRBLASTER_REQUESTED
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};
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/**
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* struct irblaster_ops - irblaster controller operations
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* @send: send raw level data
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* @send_key: send key according to the protocol
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* @set_freq: set irblaster freq
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* @get_freq: get irblaster freq
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* @set_duty: set irblaster duty
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* @get_duty: get irblaster duty
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*/
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struct irblaster_ops {
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int (*send)(struct irblaster_chip *chip,
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unsigned int *data, unsigned int len);
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int (*set_freq)(struct irblaster_chip *chip, unsigned int freq);
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unsigned int (*get_freq)(struct irblaster_chip *chip);
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int (*set_duty)(struct irblaster_chip *chip, unsigned int duty);
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unsigned int (*get_duty)(struct irblaster_chip *chip);
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};
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struct irblaster_state {
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unsigned int freq;
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unsigned int duty;
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int enabled;
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int idle;
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};
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/**
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* struct irblaster_chip - abstract a irblaster controller
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* @dev: device providing the irblaster
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* @list: list node for internal use
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* @ops: callbacks for this irblaster controller
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* @base: number of first irblaster controlled by this chip
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* @of_irblaster_n_cells: number of cells expected in the device tree
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* irblaster specifier
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* @state: irblaster controller status
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* @buffer: data
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* @buffer_len: data len
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* @sum_time: total time
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* @request: whether the controller is occupied
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*/
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struct irblaster_chip {
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struct device *dev;
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struct list_head list;
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struct irblaster_ops *ops;
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struct irblaster_state state;
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struct mutex sys_lock; /* use to sysfs */
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unsigned int base;
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unsigned int of_irblaster_n_cells;
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/* unsigned int buffer[MAX_PLUSE]; */
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unsigned int *buffer;
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unsigned int buffer_len;
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unsigned int sum_time;
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atomic_t request;
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};
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/* irblaster sysfs APIs */
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void irblasterchip_sysfs_export(struct irblaster_chip *chip);
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void irblasterchip_sysfs_unexport(struct irblaster_chip *chip);
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int irblaster_sysfs_init(void);
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/* irblaster provider APIs */
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int irblasterchip_add(struct irblaster_chip *chip);
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int irblasterchip_remove(struct irblaster_chip *chip);
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void irblaster_chip_data_clear(struct irblaster_chip *chip);
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#endif /* __LINUX_IRBLASTER_H */
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