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Diffstat (limited to 'include/linux/mfd/kempld.h')
-rw-r--r--include/linux/mfd/kempld.h125
1 files changed, 125 insertions, 0 deletions
diff --git a/include/linux/mfd/kempld.h b/include/linux/mfd/kempld.h
new file mode 100644
index 0000000..b911ef3
--- /dev/null
+++ b/include/linux/mfd/kempld.h
@@ -0,0 +1,125 @@
+/*
+ * Kontron PLD driver definitions
+ *
+ * Copyright (c) 2010-2012 Kontron Europe GmbH
+ * Author: Michael Brunner <michael.brunner@kontron.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 2 as published
+ * by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_MFD_KEMPLD_H_
+#define _LINUX_MFD_KEMPLD_H_
+
+/* kempld register definitions */
+#define KEMPLD_IOINDEX 0xa80
+#define KEMPLD_IODATA 0xa81
+#define KEMPLD_MUTEX_KEY 0x80
+#define KEMPLD_VERSION 0x00
+#define KEMPLD_VERSION_LSB 0x00
+#define KEMPLD_VERSION_MSB 0x01
+#define KEMPLD_VERSION_GET_MINOR(x) (x & 0x1f)
+#define KEMPLD_VERSION_GET_MAJOR(x) ((x >> 5) & 0x1f)
+#define KEMPLD_VERSION_GET_NUMBER(x) ((x >> 10) & 0xf)
+#define KEMPLD_VERSION_GET_TYPE(x) ((x >> 14) & 0x3)
+#define KEMPLD_BUILDNR 0x02
+#define KEMPLD_BUILDNR_LSB 0x02
+#define KEMPLD_BUILDNR_MSB 0x03
+#define KEMPLD_FEATURE 0x04
+#define KEMPLD_FEATURE_LSB 0x04
+#define KEMPLD_FEATURE_MSB 0x05
+#define KEMPLD_FEATURE_BIT_I2C (1 << 0)
+#define KEMPLD_FEATURE_BIT_WATCHDOG (1 << 1)
+#define KEMPLD_FEATURE_BIT_GPIO (1 << 2)
+#define KEMPLD_FEATURE_MASK_UART (7 << 3)
+#define KEMPLD_FEATURE_BIT_NMI (1 << 8)
+#define KEMPLD_FEATURE_BIT_SMI (1 << 9)
+#define KEMPLD_FEATURE_BIT_SCI (1 << 10)
+#define KEMPLD_SPEC 0x06
+#define KEMPLD_SPEC_GET_MINOR(x) (x & 0x0f)
+#define KEMPLD_SPEC_GET_MAJOR(x) ((x >> 4) & 0x0f)
+#define KEMPLD_IRQ_GPIO 0x35
+#define KEMPLD_IRQ_I2C 0x36
+#define KEMPLD_CFG 0x37
+#define KEMPLD_CFG_GPIO_I2C_MUX (1 << 0)
+#define KEMPLD_CFG_BIOS_WP (1 << 7)
+
+#define KEMPLD_CLK 33333333
+
+#define KEMPLD_TYPE_RELEASE 0x0
+#define KEMPLD_TYPE_DEBUG 0x1
+#define KEMPLD_TYPE_CUSTOM 0x2
+
+/**
+ * struct kempld_info - PLD device information structure
+ * @major: PLD major revision
+ * @minor: PLD minor revision
+ * @buildnr: PLD build number
+ * @number: PLD board specific index
+ * @type: PLD type
+ * @spec_major: PLD FW specification major revision
+ * @spec_minor: PLD FW specification minor revision
+ */
+struct kempld_info {
+ unsigned int major;
+ unsigned int minor;
+ unsigned int buildnr;
+ unsigned int number;
+ unsigned int type;
+ unsigned int spec_major;
+ unsigned int spec_minor;
+};
+
+/**
+ * struct kempld_device_data - Internal representation of the PLD device
+ * @io_base: Pointer to the IO memory
+ * @io_index: Pointer to the IO index register
+ * @io_data: Pointer to the IO data register
+ * @pld_clock: PLD clock frequency
+ * @feature_mask: PLD feature mask
+ * @dev: Pointer to kernel device structure
+ * @info: KEMPLD info structure
+ * @lock: PLD mutex
+ */
+struct kempld_device_data {
+ void __iomem *io_base;
+ void __iomem *io_index;
+ void __iomem *io_data;
+ u32 pld_clock;
+ u32 feature_mask;
+ struct device *dev;
+ struct kempld_info info;
+ struct mutex lock;
+};
+
+/**
+ * struct kempld_platform_data - PLD hardware configuration structure
+ * @pld_clock: PLD clock frequency
+ * @gpio_base GPIO base pin number
+ * @ioresource: IO addresses of the PLD
+ * @get_mutex: PLD specific get_mutex callback
+ * @release_mutex: PLD specific release_mutex callback
+ * @get_info: PLD specific get_info callback
+ * @register_cells: PLD specific register_cells callback
+ */
+struct kempld_platform_data {
+ u32 pld_clock;
+ int gpio_base;
+ struct resource *ioresource;
+ void (*get_hardware_mutex) (struct kempld_device_data *);
+ void (*release_hardware_mutex) (struct kempld_device_data *);
+ int (*get_info) (struct kempld_device_data *);
+ int (*register_cells) (struct kempld_device_data *);
+};
+
+extern void kempld_get_mutex(struct kempld_device_data *pld);
+extern void kempld_release_mutex(struct kempld_device_data *pld);
+extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
+extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
+extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
+extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
+extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
+extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
+
+#endif /* _LINUX_MFD_KEMPLD_H_ */