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linux-next/drivers/pwm/pwm-lpss.h
qipeng.zha 883e4d070f pwm: lpss: Update PWM setting for Broxton
For Broxton PWM controller, base unit is defined as 8-bit integer
and 14-bit fraction, so need to update base unit setting to output
wave with right frequency.

Signed-off-by: Qipeng Zha <qipeng.zha@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2015-12-16 16:45:38 +01:00

36 lines
937 B
C

/*
* Intel Low Power Subsystem PWM controller driver
*
* Copyright (C) 2014, Intel Corporation
*
* Derived from the original pwm-lpss.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __PWM_LPSS_H
#define __PWM_LPSS_H
#include <linux/device.h>
#include <linux/pwm.h>
struct pwm_lpss_chip;
struct pwm_lpss_boardinfo {
unsigned long clk_rate;
unsigned int npwm;
unsigned long base_unit_bits;
};
extern const struct pwm_lpss_boardinfo pwm_lpss_byt_info;
extern const struct pwm_lpss_boardinfo pwm_lpss_bsw_info;
extern const struct pwm_lpss_boardinfo pwm_lpss_bxt_info;
struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
const struct pwm_lpss_boardinfo *info);
int pwm_lpss_remove(struct pwm_lpss_chip *lpwm);
#endif /* __PWM_LPSS_H */