drivers/mfd/intel-lpss.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Intel LPSS core support.
   4  *
   5  * Copyright (C) 2015, Intel Corporation
   6  *
   7  * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
   8  *          Mika Westerberg <mika.westerberg@linux.intel.com>
   9  */
  10
  11 #ifndef __MFD_INTEL_LPSS_H
  12 #define __MFD_INTEL_LPSS_H
  13
  14 #include <linux/bits.h>
  15 #include <linux/pm.h>
  16
  17 /*
  18  * Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources.
  19  * Set to ignore resource conflicts with ACPI declared SystemMemory regions.
  20  */
  21 #define QUIRK_IGNORE_RESOURCE_CONFLICTS BIT(0)
  22 /*
  23  * Some devices have misconfigured clock divider due to a firmware bug.
  24  * Set this to force the clock divider to 1:1 ratio.
  25  */
  26 #define QUIRK_CLOCK_DIVIDER_UNITY               BIT(1)
  27
  28 struct device;
  29 struct resource;
  30 struct software_node;
  31
  32 struct intel_lpss_platform_info {
  33         struct resource *mem;
  34         int irq;
  35         unsigned int quirks;
  36         unsigned long clk_rate;
  37         const char *clk_con_id;
  38         const struct software_node *swnode;
  39 };
  40
  41 int intel_lpss_probe(struct device *dev,
  42                      const struct intel_lpss_platform_info *info);
  43 void intel_lpss_remove(struct device *dev);
  44
  45 extern const struct dev_pm_ops intel_lpss_pm_ops;
  46
  47 #endif /* __MFD_INTEL_LPSS_H */