mirror of
https://github.com/torvalds/linux
synced 2024-09-19 18:46:35 +00:00
1d8c51ed2d
Some devices (eg. Dell XPS 9530, 2023) due to a firmware bug have a misconfigured clock divider, which should've been 1:1. This introduces quirk which conditionally re-configures the clock divider to 1:1. Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20231221185142.9224-3-alex.vinarskis@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Intel LPSS core support.
|
|
*
|
|
* Copyright (C) 2015, Intel Corporation
|
|
*
|
|
* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
* Mika Westerberg <mika.westerberg@linux.intel.com>
|
|
*/
|
|
|
|
#ifndef __MFD_INTEL_LPSS_H
|
|
#define __MFD_INTEL_LPSS_H
|
|
|
|
#include <linux/bits.h>
|
|
#include <linux/pm.h>
|
|
|
|
/*
|
|
* Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources.
|
|
* Set to ignore resource conflicts with ACPI declared SystemMemory regions.
|
|
*/
|
|
#define QUIRK_IGNORE_RESOURCE_CONFLICTS BIT(0)
|
|
/*
|
|
* Some devices have misconfigured clock divider due to a firmware bug.
|
|
* Set this to force the clock divider to 1:1 ratio.
|
|
*/
|
|
#define QUIRK_CLOCK_DIVIDER_UNITY BIT(1)
|
|
|
|
struct device;
|
|
struct resource;
|
|
struct software_node;
|
|
|
|
struct intel_lpss_platform_info {
|
|
struct resource *mem;
|
|
int irq;
|
|
unsigned int quirks;
|
|
unsigned long clk_rate;
|
|
const char *clk_con_id;
|
|
const struct software_node *swnode;
|
|
};
|
|
|
|
int intel_lpss_probe(struct device *dev,
|
|
const struct intel_lpss_platform_info *info);
|
|
void intel_lpss_remove(struct device *dev);
|
|
|
|
extern const struct dev_pm_ops intel_lpss_pm_ops;
|
|
|
|
#endif /* __MFD_INTEL_LPSS_H */
|