include/linux/mfd/pm8xxx/core.h

   1 /*
   2  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 and
   6  * only version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 /*
  14  * Qualcomm PMIC 8xxx driver header file
  15  *
  16  */
  17
  18 #ifndef __MFD_PM8XXX_CORE_H
  19 #define __MFD_PM8XXX_CORE_H
  20
  21 #include <linux/mfd/core.h>
  22
  23 struct pm8xxx_drvdata {
  24         int     (*pmic_readb) (const struct device *dev, u16 addr, u8 *val);
  25         int     (*pmic_writeb) (const struct device *dev, u16 addr, u8 val);
  26         int     (*pmic_read_buf) (const struct device *dev, u16 addr, u8 *buf,
  27                                                                         int n);
  28         int     (*pmic_write_buf) (const struct device *dev, u16 addr, u8 *buf,
  29                                                                         int n);
  30         int     (*pmic_read_irq_stat) (const struct device *dev, int irq);
  31         void    *pm_chip_data;
  32 };
  33
  34 static inline int pm8xxx_readb(const struct device *dev, u16 addr, u8 *val)
  35 {
  36         struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
  37
  38         if (!dd)
  39                 return -EINVAL;
  40         return dd->pmic_readb(dev, addr, val);
  41 }
  42
  43 static inline int pm8xxx_writeb(const struct device *dev, u16 addr, u8 val)
  44 {
  45         struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
  46
  47         if (!dd)
  48                 return -EINVAL;
  49         return dd->pmic_writeb(dev, addr, val);
  50 }
  51
  52 static inline int pm8xxx_read_buf(const struct device *dev, u16 addr, u8 *buf,
  53                                                                         int n)
  54 {
  55         struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
  56
  57         if (!dd)
  58                 return -EINVAL;
  59         return dd->pmic_read_buf(dev, addr, buf, n);
  60 }
  61
  62 static inline int pm8xxx_write_buf(const struct device *dev, u16 addr, u8 *buf,
  63                                                                         int n)
  64 {
  65         struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
  66
  67         if (!dd)
  68                 return -EINVAL;
  69         return dd->pmic_write_buf(dev, addr, buf, n);
  70 }
  71
  72 static inline int pm8xxx_read_irq_stat(const struct device *dev, int irq)
  73 {
  74         struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
  75
  76         if (!dd)
  77                 return -EINVAL;
  78         return dd->pmic_read_irq_stat(dev, irq);
  79 }
  80
  81 #endif