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 */ 67struct 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 */ 89struct 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 */ 110struct 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 120extern void kempld_get_mutex(struct kempld_device_data *pld); 121extern void kempld_release_mutex(struct kempld_device_data *pld); 122extern u8 kempld_read8(struct kempld_device_data *pld, u8 index); 123extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data); 124extern u16 kempld_read16(struct kempld_device_data *pld, u8 index); 125extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data); 126extern u32 kempld_read32(struct kempld_device_data *pld, u8 index); 127extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data); 128 129#endif /* _LINUX_MFD_KEMPLD_H_ */ 130