1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Intel Low Power Subsystem PWM controller driver
5 * Copyright (C) 2014, Intel Corporation
7 * Derived from the original pwm-lpss.c
13 #include <linux/device.h>
14 #include <linux/pwm.h>
18 struct pwm_lpss_chip {
21 const struct pwm_lpss_boardinfo *info;
24 struct pwm_lpss_boardinfo {
25 unsigned long clk_rate;
27 unsigned long base_unit_bits;
29 * Some versions of the IP may stuck in the state machine if enable
30 * bit is not set, and hence update bit will show busy status till
31 * the reset. For the rest it may be otherwise.
35 * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device
36 * messes with the PWM0 controllers state,
38 bool other_devices_aml_touches_pwm_regs;
41 extern const struct pwm_lpss_boardinfo pwm_lpss_byt_info;
42 extern const struct pwm_lpss_boardinfo pwm_lpss_bsw_info;
43 extern const struct pwm_lpss_boardinfo pwm_lpss_bxt_info;
44 extern const struct pwm_lpss_boardinfo pwm_lpss_tng_info;
46 struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base,
47 const struct pwm_lpss_boardinfo *info);
49 #endif /* __PWM_LPSS_H */