58a9e5b983
This patch adds attributes to the Kontron PLD driver to allow applications to retrieve firmware information. Additionally the format has been changed to conform with the representation in other Kontron software. Signed-off-by: Michael Brunner <michael.brunner@kontron.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*
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* Kontron PLD driver definitions
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*
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* Copyright (c) 2010-2012 Kontron Europe GmbH
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* Author: Michael Brunner <michael.brunner@kontron.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License 2 as published
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* by the Free Software Foundation.
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*/
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#ifndef _LINUX_MFD_KEMPLD_H_
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#define _LINUX_MFD_KEMPLD_H_
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/* kempld register definitions */
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#define KEMPLD_IOINDEX 0xa80
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#define KEMPLD_IODATA 0xa81
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#define KEMPLD_MUTEX_KEY 0x80
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#define KEMPLD_VERSION 0x00
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#define KEMPLD_VERSION_LSB 0x00
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#define KEMPLD_VERSION_MSB 0x01
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#define KEMPLD_VERSION_GET_MINOR(x) (x & 0x1f)
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#define KEMPLD_VERSION_GET_MAJOR(x) ((x >> 5) & 0x1f)
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#define KEMPLD_VERSION_GET_NUMBER(x) ((x >> 10) & 0xf)
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#define KEMPLD_VERSION_GET_TYPE(x) ((x >> 14) & 0x3)
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#define KEMPLD_BUILDNR 0x02
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#define KEMPLD_BUILDNR_LSB 0x02
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#define KEMPLD_BUILDNR_MSB 0x03
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#define KEMPLD_FEATURE 0x04
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#define KEMPLD_FEATURE_LSB 0x04
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#define KEMPLD_FEATURE_MSB 0x05
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#define KEMPLD_FEATURE_BIT_I2C (1 << 0)
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#define KEMPLD_FEATURE_BIT_WATCHDOG (1 << 1)
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#define KEMPLD_FEATURE_BIT_GPIO (1 << 2)
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#define KEMPLD_FEATURE_MASK_UART (7 << 3)
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#define KEMPLD_FEATURE_BIT_NMI (1 << 8)
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#define KEMPLD_FEATURE_BIT_SMI (1 << 9)
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#define KEMPLD_FEATURE_BIT_SCI (1 << 10)
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#define KEMPLD_SPEC 0x06
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#define KEMPLD_SPEC_GET_MINOR(x) (x & 0x0f)
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#define KEMPLD_SPEC_GET_MAJOR(x) ((x >> 4) & 0x0f)
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#define KEMPLD_IRQ_GPIO 0x35
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#define KEMPLD_IRQ_I2C 0x36
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#define KEMPLD_CFG 0x37
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#define KEMPLD_CFG_GPIO_I2C_MUX (1 << 0)
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#define KEMPLD_CFG_BIOS_WP (1 << 7)
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#define KEMPLD_CLK 33333333
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#define KEMPLD_TYPE_RELEASE 0x0
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#define KEMPLD_TYPE_DEBUG 0x1
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#define KEMPLD_TYPE_CUSTOM 0x2
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#define KEMPLD_VERSION_LEN 10
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/**
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* struct kempld_info - PLD device information structure
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* @major: PLD major revision
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* @minor: PLD minor revision
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* @buildnr: PLD build number
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* @number: PLD board specific index
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* @type: PLD type
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* @spec_major: PLD FW specification major revision
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* @spec_minor: PLD FW specification minor revision
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* @version: PLD version string
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*/
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struct kempld_info {
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unsigned int major;
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unsigned int minor;
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unsigned int buildnr;
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unsigned int number;
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unsigned int type;
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unsigned int spec_major;
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unsigned int spec_minor;
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char version[KEMPLD_VERSION_LEN];
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};
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/**
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* struct kempld_device_data - Internal representation of the PLD device
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* @io_base: Pointer to the IO memory
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* @io_index: Pointer to the IO index register
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* @io_data: Pointer to the IO data register
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* @pld_clock: PLD clock frequency
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* @feature_mask: PLD feature mask
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* @dev: Pointer to kernel device structure
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* @info: KEMPLD info structure
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* @lock: PLD mutex
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*/
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struct kempld_device_data {
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void __iomem *io_base;
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void __iomem *io_index;
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void __iomem *io_data;
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u32 pld_clock;
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u32 feature_mask;
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struct device *dev;
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struct kempld_info info;
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struct mutex lock;
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};
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/**
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* struct kempld_platform_data - PLD hardware configuration structure
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* @pld_clock: PLD clock frequency
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* @gpio_base GPIO base pin number
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* @ioresource: IO addresses of the PLD
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* @get_mutex: PLD specific get_mutex callback
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* @release_mutex: PLD specific release_mutex callback
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* @get_info: PLD specific get_info callback
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* @register_cells: PLD specific register_cells callback
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*/
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struct kempld_platform_data {
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u32 pld_clock;
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int gpio_base;
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struct resource *ioresource;
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void (*get_hardware_mutex) (struct kempld_device_data *);
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void (*release_hardware_mutex) (struct kempld_device_data *);
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int (*get_info) (struct kempld_device_data *);
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int (*register_cells) (struct kempld_device_data *);
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};
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extern void kempld_get_mutex(struct kempld_device_data *pld);
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extern void kempld_release_mutex(struct kempld_device_data *pld);
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extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
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extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
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extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
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extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
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extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
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extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
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#endif /* _LINUX_MFD_KEMPLD_H_ */
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