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TOMOYO Linux Cross Reference
Linux/include/linux/mfd/kempld.h

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  1 /*
  2  * Kontron PLD driver definitions
  3  *
  4  * Copyright (c) 2010-2012 Kontron Europe GmbH
  5  * Author: Michael Brunner <michael.brunner@kontron.com>
  6  *
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License 2 as published
  9  * by the Free Software Foundation.
 10  */
 11 
 12 #ifndef _LINUX_MFD_KEMPLD_H_
 13 #define _LINUX_MFD_KEMPLD_H_
 14 
 15 /* kempld register definitions */
 16 #define KEMPLD_IOINDEX                  0xa80
 17 #define KEMPLD_IODATA                   0xa81
 18 #define KEMPLD_MUTEX_KEY                0x80
 19 #define KEMPLD_VERSION                  0x00
 20 #define KEMPLD_VERSION_LSB              0x00
 21 #define KEMPLD_VERSION_MSB              0x01
 22 #define KEMPLD_VERSION_GET_MINOR(x)     (x & 0x1f)
 23 #define KEMPLD_VERSION_GET_MAJOR(x)     ((x >> 5) & 0x1f)
 24 #define KEMPLD_VERSION_GET_NUMBER(x)    ((x >> 10) & 0xf)
 25 #define KEMPLD_VERSION_GET_TYPE(x)      ((x >> 14) & 0x3)
 26 #define KEMPLD_BUILDNR                  0x02
 27 #define KEMPLD_BUILDNR_LSB              0x02
 28 #define KEMPLD_BUILDNR_MSB              0x03
 29 #define KEMPLD_FEATURE                  0x04
 30 #define KEMPLD_FEATURE_LSB              0x04
 31 #define KEMPLD_FEATURE_MSB              0x05
 32 #define KEMPLD_FEATURE_BIT_I2C          (1 << 0)
 33 #define KEMPLD_FEATURE_BIT_WATCHDOG     (1 << 1)
 34 #define KEMPLD_FEATURE_BIT_GPIO         (1 << 2)
 35 #define KEMPLD_FEATURE_MASK_UART        (7 << 3)
 36 #define KEMPLD_FEATURE_BIT_NMI          (1 << 8)
 37 #define KEMPLD_FEATURE_BIT_SMI          (1 << 9)
 38 #define KEMPLD_FEATURE_BIT_SCI          (1 << 10)
 39 #define KEMPLD_SPEC                     0x06
 40 #define KEMPLD_SPEC_GET_MINOR(x)        (x & 0x0f)
 41 #define KEMPLD_SPEC_GET_MAJOR(x)        ((x >> 4) & 0x0f)
 42 #define KEMPLD_IRQ_GPIO                 0x35
 43 #define KEMPLD_IRQ_I2C                  0x36
 44 #define KEMPLD_CFG                      0x37
 45 #define KEMPLD_CFG_GPIO_I2C_MUX         (1 << 0)
 46 #define KEMPLD_CFG_BIOS_WP              (1 << 7)
 47 
 48 #define KEMPLD_CLK                      33333333
 49 
 50 #define KEMPLD_TYPE_RELEASE             0x0
 51 #define KEMPLD_TYPE_DEBUG               0x1
 52 #define KEMPLD_TYPE_CUSTOM              0x2
 53 
 54 #define KEMPLD_VERSION_LEN              10
 55 
 56 /**
 57  * struct kempld_info - PLD device information structure
 58  * @major:      PLD major revision
 59  * @minor:      PLD minor revision
 60  * @buildnr:    PLD build number
 61  * @number:     PLD board specific index
 62  * @type:       PLD type
 63  * @spec_major: PLD FW specification major revision
 64  * @spec_minor: PLD FW specification minor revision
 65  * @version:    PLD version string
 66  */
 67 struct kempld_info {
 68         unsigned int major;
 69         unsigned int minor;
 70         unsigned int buildnr;
 71         unsigned int number;
 72         unsigned int type;
 73         unsigned int spec_major;
 74         unsigned int spec_minor;
 75         char version[KEMPLD_VERSION_LEN];
 76 };
 77 
 78 /**
 79  * struct kempld_device_data - Internal representation of the PLD device
 80  * @io_base:            Pointer to the IO memory
 81  * @io_index:           Pointer to the IO index register
 82  * @io_data:            Pointer to the IO data register
 83  * @pld_clock:          PLD clock frequency
 84  * @feature_mask:       PLD feature mask
 85  * @dev:                Pointer to kernel device structure
 86  * @info:               KEMPLD info structure
 87  * @lock:               PLD mutex
 88  */
 89 struct kempld_device_data {
 90         void __iomem            *io_base;
 91         void __iomem            *io_index;
 92         void __iomem            *io_data;
 93         u32                     pld_clock;
 94         u32                     feature_mask;
 95         struct device           *dev;
 96         struct kempld_info      info;
 97         struct mutex            lock;
 98 };
 99 
100 /**
101  * struct kempld_platform_data - PLD hardware configuration structure
102  * @pld_clock:                  PLD clock frequency
103  * @gpio_base                   GPIO base pin number
104  * @ioresource:                 IO addresses of the PLD
105  * @get_mutex:                  PLD specific get_mutex callback
106  * @release_mutex:              PLD specific release_mutex callback
107  * @get_info:                   PLD specific get_info callback
108  * @register_cells:             PLD specific register_cells callback
109  */
110 struct kempld_platform_data {
111         u32                             pld_clock;
112         int                             gpio_base;
113         struct resource                 *ioresource;
114         void (*get_hardware_mutex)      (struct kempld_device_data *);
115         void (*release_hardware_mutex)  (struct kempld_device_data *);
116         int (*get_info)                 (struct kempld_device_data *);
117         int (*register_cells)           (struct kempld_device_data *);
118 };
119 
120 extern void kempld_get_mutex(struct kempld_device_data *pld);
121 extern void kempld_release_mutex(struct kempld_device_data *pld);
122 extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
123 extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
124 extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
125 extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
126 extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
127 extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
128 
129 #endif /* _LINUX_MFD_KEMPLD_H_ */
130 

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