[PATCH v2 9/9] pwm: lpss: Allow other drivers to enable PWM LPSS

From: Andy Shevchenko
Date: Thu Sep 08 2022 - 09:57:30 EST


The PWM LPSS device can be embedded in another device.
In order to enable it, allow that drivers to probe
a corresponding device.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/pwm/pwm-lpss.h | 26 ++--------------
.../linux/platform_data/x86}/pwm-lpss.h | 30 ++++---------------
2 files changed, 7 insertions(+), 49 deletions(-)
copy {drivers/pwm => include/linux/platform_data/x86}/pwm-lpss.h (52%)

diff --git a/drivers/pwm/pwm-lpss.h b/drivers/pwm/pwm-lpss.h
index 0249c01befd5..fe32e336db8e 100644
--- a/drivers/pwm/pwm-lpss.h
+++ b/drivers/pwm/pwm-lpss.h
@@ -13,11 +13,9 @@
#include <linux/pwm.h>
#include <linux/types.h>

-#define MAX_PWMS 4
-
-struct device;
+#include <linux/platform_data/x86/pwm-lpss.h>

-struct pwm_lpss_boardinfo;
+#define MAX_PWMS 4

struct pwm_lpss_chip {
struct pwm_chip chip;
@@ -25,29 +23,9 @@ struct pwm_lpss_chip {
const struct pwm_lpss_boardinfo *info;
};

-struct pwm_lpss_boardinfo {
- unsigned long clk_rate;
- unsigned int npwm;
- unsigned long base_unit_bits;
- /*
- * Some versions of the IP may stuck in the state machine if enable
- * bit is not set, and hence update bit will show busy status till
- * the reset. For the rest it may be otherwise.
- */
- bool bypass;
- /*
- * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device
- * messes with the PWM0 controllers state,
- */
- bool other_devices_aml_touches_pwm_regs;
-};
-
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;
extern const struct pwm_lpss_boardinfo pwm_lpss_tng_info;

-struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base,
- const struct pwm_lpss_boardinfo *info);
-
#endif /* __PWM_LPSS_H */
diff --git a/drivers/pwm/pwm-lpss.h b/include/linux/platform_data/x86/pwm-lpss.h
similarity index 52%
copy from drivers/pwm/pwm-lpss.h
copy to include/linux/platform_data/x86/pwm-lpss.h
index 0249c01befd5..296bd837ddbb 100644
--- a/drivers/pwm/pwm-lpss.h
+++ b/include/linux/platform_data/x86/pwm-lpss.h
@@ -1,29 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Intel Low Power Subsystem PWM controller driver
- *
- * Copyright (C) 2014, Intel Corporation
- *
- * Derived from the original pwm-lpss.c
- */
+/* Intel Low Power Subsystem PWM controller driver */

-#ifndef __PWM_LPSS_H
-#define __PWM_LPSS_H
+#ifndef __PLATFORM_DATA_X86_PWM_LPSS_H
+#define __PLATFORM_DATA_X86_PWM_LPSS_H

-#include <linux/pwm.h>
#include <linux/types.h>

-#define MAX_PWMS 4
-
struct device;

-struct pwm_lpss_boardinfo;
-
-struct pwm_lpss_chip {
- struct pwm_chip chip;
- void __iomem *regs;
- const struct pwm_lpss_boardinfo *info;
-};
+struct pwm_lpss_chip;

struct pwm_lpss_boardinfo {
unsigned long clk_rate;
@@ -42,12 +27,7 @@ struct pwm_lpss_boardinfo {
bool other_devices_aml_touches_pwm_regs;
};

-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;
-extern const struct pwm_lpss_boardinfo pwm_lpss_tng_info;
-
struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base,
const struct pwm_lpss_boardinfo *info);

-#endif /* __PWM_LPSS_H */
+#endif /* __PLATFORM_DATA_X86_PWM_LPSS_H */
--
2.35.1