1 /* 2 * Kontron PLD driver definitions 3 * 4 * Copyright (c) 2010-2012 Kontron Europe GmbH 5 * Author: Michael Brunner <[email protected]> 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 /** 55 * struct kempld_info - PLD device information structure 56 * @major: PLD major revision 57 * @minor: PLD minor revision 58 * @buildnr: PLD build number 59 * @number: PLD board specific index 60 * @type: PLD type 61 * @spec_major: PLD FW specification major revision 62 * @spec_minor: PLD FW specification minor revision 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 }; 73 74 /** 75 * struct kempld_device_data - Internal representation of the PLD device 76 * @io_base: Pointer to the IO memory 77 * @io_index: Pointer to the IO index register 78 * @io_data: Pointer to the IO data register 79 * @pld_clock: PLD clock frequency 80 * @feature_mask: PLD feature mask 81 * @dev: Pointer to kernel device structure 82 * @info: KEMPLD info structure 83 * @lock: PLD mutex 84 */ 85 struct kempld_device_data { 86 void __iomem *io_base; 87 void __iomem *io_index; 88 void __iomem *io_data; 89 u32 pld_clock; 90 u32 feature_mask; 91 struct device *dev; 92 struct kempld_info info; 93 struct mutex lock; 94 }; 95 96 /** 97 * struct kempld_platform_data - PLD hardware configuration structure 98 * @pld_clock: PLD clock frequency 99 * @gpio_base GPIO base pin number 100 * @ioresource: IO addresses of the PLD 101 * @get_mutex: PLD specific get_mutex callback 102 * @release_mutex: PLD specific release_mutex callback 103 * @get_info: PLD specific get_info callback 104 * @register_cells: PLD specific register_cells callback 105 */ 106 struct kempld_platform_data { 107 u32 pld_clock; 108 int gpio_base; 109 struct resource *ioresource; 110 void (*get_hardware_mutex) (struct kempld_device_data *); 111 void (*release_hardware_mutex) (struct kempld_device_data *); 112 int (*get_info) (struct kempld_device_data *); 113 int (*register_cells) (struct kempld_device_data *); 114 }; 115 116 extern void kempld_get_mutex(struct kempld_device_data *pld); 117 extern void kempld_release_mutex(struct kempld_device_data *pld); 118 extern u8 kempld_read8(struct kempld_device_data *pld, u8 index); 119 extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data); 120 extern u16 kempld_read16(struct kempld_device_data *pld, u8 index); 121 extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data); 122 extern u32 kempld_read32(struct kempld_device_data *pld, u8 index); 123 extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data); 124 125 #endif /* _LINUX_MFD_KEMPLD_H_ */ 126