root/include/linux/mfd/kempld.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Kontron PLD driver definitions
   4  *
   5  * Copyright (c) 2010-2012 Kontron Europe GmbH
   6  * Author: Michael Brunner <michael.brunner@kontron.com>
   7  */
   8 
   9 #ifndef _LINUX_MFD_KEMPLD_H_
  10 #define _LINUX_MFD_KEMPLD_H_
  11 
  12 /* kempld register definitions */
  13 #define KEMPLD_IOINDEX                  0xa80
  14 #define KEMPLD_IODATA                   0xa81
  15 #define KEMPLD_MUTEX_KEY                0x80
  16 #define KEMPLD_VERSION                  0x00
  17 #define KEMPLD_VERSION_LSB              0x00
  18 #define KEMPLD_VERSION_MSB              0x01
  19 #define KEMPLD_VERSION_GET_MINOR(x)     (x & 0x1f)
  20 #define KEMPLD_VERSION_GET_MAJOR(x)     ((x >> 5) & 0x1f)
  21 #define KEMPLD_VERSION_GET_NUMBER(x)    ((x >> 10) & 0xf)
  22 #define KEMPLD_VERSION_GET_TYPE(x)      ((x >> 14) & 0x3)
  23 #define KEMPLD_BUILDNR                  0x02
  24 #define KEMPLD_BUILDNR_LSB              0x02
  25 #define KEMPLD_BUILDNR_MSB              0x03
  26 #define KEMPLD_FEATURE                  0x04
  27 #define KEMPLD_FEATURE_LSB              0x04
  28 #define KEMPLD_FEATURE_MSB              0x05
  29 #define KEMPLD_FEATURE_BIT_I2C          (1 << 0)
  30 #define KEMPLD_FEATURE_BIT_WATCHDOG     (1 << 1)
  31 #define KEMPLD_FEATURE_BIT_GPIO         (1 << 2)
  32 #define KEMPLD_FEATURE_MASK_UART        (7 << 3)
  33 #define KEMPLD_FEATURE_BIT_NMI          (1 << 8)
  34 #define KEMPLD_FEATURE_BIT_SMI          (1 << 9)
  35 #define KEMPLD_FEATURE_BIT_SCI          (1 << 10)
  36 #define KEMPLD_SPEC                     0x06
  37 #define KEMPLD_SPEC_GET_MINOR(x)        (x & 0x0f)
  38 #define KEMPLD_SPEC_GET_MAJOR(x)        ((x >> 4) & 0x0f)
  39 #define KEMPLD_IRQ_GPIO                 0x35
  40 #define KEMPLD_IRQ_I2C                  0x36
  41 #define KEMPLD_CFG                      0x37
  42 #define KEMPLD_CFG_GPIO_I2C_MUX         (1 << 0)
  43 #define KEMPLD_CFG_BIOS_WP              (1 << 7)
  44 
  45 #define KEMPLD_CLK                      33333333
  46 
  47 #define KEMPLD_TYPE_RELEASE             0x0
  48 #define KEMPLD_TYPE_DEBUG               0x1
  49 #define KEMPLD_TYPE_CUSTOM              0x2
  50 
  51 #define KEMPLD_VERSION_LEN              10
  52 
  53 /**
  54  * struct kempld_info - PLD device information structure
  55  * @major:      PLD major revision
  56  * @minor:      PLD minor revision
  57  * @buildnr:    PLD build number
  58  * @number:     PLD board specific index
  59  * @type:       PLD type
  60  * @spec_major: PLD FW specification major revision
  61  * @spec_minor: PLD FW specification minor revision
  62  * @version:    PLD version string
  63  */
  64 struct kempld_info {
  65         unsigned int major;
  66         unsigned int minor;
  67         unsigned int buildnr;
  68         unsigned int number;
  69         unsigned int type;
  70         unsigned int spec_major;
  71         unsigned int spec_minor;
  72         char version[KEMPLD_VERSION_LEN];
  73 };
  74 
  75 /**
  76  * struct kempld_device_data - Internal representation of the PLD device
  77  * @io_base:            Pointer to the IO memory
  78  * @io_index:           Pointer to the IO index register
  79  * @io_data:            Pointer to the IO data register
  80  * @pld_clock:          PLD clock frequency
  81  * @feature_mask:       PLD feature mask
  82  * @dev:                Pointer to kernel device structure
  83  * @info:               KEMPLD info structure
  84  * @lock:               PLD mutex
  85  */
  86 struct kempld_device_data {
  87         void __iomem            *io_base;
  88         void __iomem            *io_index;
  89         void __iomem            *io_data;
  90         u32                     pld_clock;
  91         u32                     feature_mask;
  92         struct device           *dev;
  93         struct kempld_info      info;
  94         struct mutex            lock;
  95 };
  96 
  97 /**
  98  * struct kempld_platform_data - PLD hardware configuration structure
  99  * @pld_clock:                  PLD clock frequency
 100  * @gpio_base                   GPIO base pin number
 101  * @ioresource:                 IO addresses of the PLD
 102  * @get_mutex:                  PLD specific get_mutex callback
 103  * @release_mutex:              PLD specific release_mutex callback
 104  * @get_info:                   PLD specific get_info callback
 105  * @register_cells:             PLD specific register_cells callback
 106  */
 107 struct kempld_platform_data {
 108         u32                             pld_clock;
 109         int                             gpio_base;
 110         struct resource                 *ioresource;
 111         void (*get_hardware_mutex)      (struct kempld_device_data *);
 112         void (*release_hardware_mutex)  (struct kempld_device_data *);
 113         int (*get_info)                 (struct kempld_device_data *);
 114         int (*register_cells)           (struct kempld_device_data *);
 115 };
 116 
 117 extern void kempld_get_mutex(struct kempld_device_data *pld);
 118 extern void kempld_release_mutex(struct kempld_device_data *pld);
 119 extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
 120 extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
 121 extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
 122 extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
 123 extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
 124 extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
 125 
 126 #endif /* _LINUX_MFD_KEMPLD_H_ */