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 */
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/*
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* Intel LPSS core support.
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*
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* Copyright (C) 2015, Intel Corporation
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*
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* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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* Mika Westerberg <mika.westerberg@linux.intel.com>
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*/
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#ifndef __MFD_INTEL_LPSS_H
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#define __MFD_INTEL_LPSS_H
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#include <linux/bits.h>
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#include <linux/pm.h>
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/*
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* Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources.
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* Set to ignore resource conflicts with ACPI declared SystemMemory regions.
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*/
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#define QUIRK_IGNORE_RESOURCE_CONFLICTS BIT(0)
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/*
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* Some devices have misconfigured clock divider due to a firmware bug.
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* Set this to force the clock divider to 1:1 ratio.
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*/
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#define QUIRK_CLOCK_DIVIDER_UNITY BIT(1)
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struct device;
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struct resource;
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struct software_node;
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struct intel_lpss_platform_info {
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struct resource *mem;
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int irq;
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unsigned int quirks;
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unsigned long clk_rate;
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const char *clk_con_id;
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const struct software_node *swnode;
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};
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int intel_lpss_probe(struct device *dev,
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const struct intel_lpss_platform_info *info);
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void intel_lpss_remove(struct device *dev);
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extern const struct dev_pm_ops intel_lpss_pm_ops;
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#endif /* __MFD_INTEL_LPSS_H */
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