diff options
Diffstat (limited to 'drivers/i2c-slave/i2c_slave_ring_buffer.h')
-rw-r--r-- | drivers/i2c-slave/i2c_slave_ring_buffer.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/i2c-slave/i2c_slave_ring_buffer.h b/drivers/i2c-slave/i2c_slave_ring_buffer.h new file mode 100644 index 000000000000..1068e5f1b527 --- /dev/null +++ b/drivers/i2c-slave/i2c_slave_ring_buffer.h @@ -0,0 +1,39 @@ +#ifndef __BUFFER_MANAGER_H__ +#define __BUFFER_MANAGER_H__ +/* + * 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 + */ +#include <linux/types.h> +#include <linux/spinlock.h> + +typedef struct i2c_slave_ring_buffer { + int start; + int end; + int total; + bool full; + char *buffer; + spinlock_t lock; +} i2c_slave_ring_buffer_t; + +i2c_slave_ring_buffer_t *i2c_slave_rb_alloc(int size); + +void i2c_slave_rb_release(i2c_slave_ring_buffer_t *ring); + +int i2c_slave_rb_produce(i2c_slave_ring_buffer_t *ring, int num, char *data); + +int i2c_slave_rb_consume(i2c_slave_ring_buffer_t *ring, int num, char *data); + +int i2c_slave_rb_num(i2c_slave_ring_buffer_t *ring); + +void i2c_slave_rb_clear(i2c_slave_ring_buffer_t *ring); + +#endif |