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Diffstat (limited to 'drivers/i2c-slave/i2c_slave_device.h')
-rw-r--r--drivers/i2c-slave/i2c_slave_device.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/i2c-slave/i2c_slave_device.h b/drivers/i2c-slave/i2c_slave_device.h
new file mode 100644
index 000000000000..e08ea569e030
--- /dev/null
+++ b/drivers/i2c-slave/i2c_slave_device.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2007-2008 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __I2C_SLAVE_H__
+#define __I2C_SLAVE_H__
+
+#include <linux/list.h>
+#include "i2c_slave_ring_buffer.h"
+
+#define I2C_SLAVE_DEVICE_MAX 256
+extern int i2c_slave_major;
+
+typedef struct i2c_slave_device {
+ struct list_head list;
+ u8 address;
+ u32 scl_freq;
+ char *name;
+ i2c_slave_ring_buffer_t *receive_buffer;
+ i2c_slave_ring_buffer_t *send_buffer;
+ int (*start) (struct i2c_slave_device *);
+ int (*stop) (struct i2c_slave_device *);
+ /*int (*set_freq)(struct i2c_slave_device*);
+ int (*set_addr)(struct i2c_slave_device*);*/
+ void *private_data;
+ struct device *dev;
+ int id;
+} i2c_slave_device_t;
+
+/*
+ used by the specific device to set some infomations.
+*/
+void i2c_slave_device_set_name(i2c_slave_device_t *device, char *name);
+void i2c_slave_device_set_address(i2c_slave_device_t *device, u8 address);
+i2c_slave_device_t *i2c_slave_device_find(int id);
+u8 i2c_slave_device_get_addr(i2c_slave_device_t *device);
+int i2c_slave_device_set_freq(i2c_slave_device_t *device, u32 freq);
+u32 i2c_slave_device_get_freq(i2c_slave_device_t *device);
+
+/*
+**used by the specific i2c device to register itself to the core.
+*/
+i2c_slave_device_t *i2c_slave_device_alloc(void);
+void i2c_slave_device_free(i2c_slave_device_t *);
+int i2c_slave_device_register(i2c_slave_device_t *device);
+void i2c_slave_device_unregister(i2c_slave_device_t *device);
+
+/*
+ this two functions are used by i2c slave core to start or stop the specific i2c device.
+*/
+int i2c_slave_device_start(i2c_slave_device_t *device);
+int i2c_slave_device_stop(i2c_slave_device_t *device);
+
+/*
+ this two functions are used by i2c slave core to get data by the specific i2c slave device
+ or send data to it for it to feed i2c master's need.
+
+ @mod: async(1) or sync(0) mode.
+*/
+int i2c_slave_device_read(i2c_slave_device_t *device, int num, u8 *data);
+int i2c_slave_device_write(i2c_slave_device_t *device, int num, u8 *data);
+
+/*
+*this 2 functions used by the specific i2c slave device when they got data from master,
+*or is requested by master.
+*/
+int i2c_slave_device_produce(i2c_slave_device_t *device, int num, u8 *data);
+int i2c_slave_device_consume(i2c_slave_device_t *device, int num, u8 *data);
+
+#endif