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-rw-r--r--drivers/staging/meilhaus/mecirc_buf.h131
1 files changed, 0 insertions, 131 deletions
diff --git a/drivers/staging/meilhaus/mecirc_buf.h b/drivers/staging/meilhaus/mecirc_buf.h
deleted file mode 100644
index 516658522ef1..000000000000
--- a/drivers/staging/meilhaus/mecirc_buf.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/**
- * @file mecirc_buf.h
- *
- * @brief Meilhaus circular buffer implementation.
- * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
- * @author Guenter Gebhardt
- * @author Krzysztof Gantzke (k.gantzke@meilhaus.de)
- */
-
-/*
- * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
- *
- * This file is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _MECIRC_BUF_H_
-#define _MECIRC_BUF_H_
-
-# ifdef __KERNEL__
-
-# ifdef BOSCH
-
-typedef struct me_circ_buf {
- unsigned int mask;
-// unsigned int count;
- uint32_t *buf;
- int volatile head;
- int volatile tail;
-} me_circ_buf_t;
-
-static inline int me_circ_buf_values(me_circ_buf_t * buf)
-{
-// return ((buf->head - buf->tail) & (buf->count - 1));
- return ((buf->head - buf->tail) & (buf->mask));
-}
-
-static inline int me_circ_buf_space(me_circ_buf_t * buf)
-{
-// return ((buf->tail - (buf->head + 1)) & (buf->count - 1));
- return ((buf->tail - (buf->head + 1)) & (buf->mask));
-}
-
-static inline int me_circ_buf_values_to_end(me_circ_buf_t * buf)
-{
- int end;
- int n;
-// end = buf->count - buf->tail;
-// n = (buf->head + end) & (buf->count - 1);
- end = buf->mask + 1 - buf->tail;
- n = (buf->head + end) & (buf->mask);
- return (n < end) ? n : end;
-}
-
-static inline int me_circ_buf_space_to_end(me_circ_buf_t * buf)
-{
- int end;
- int n;
-
-// end = buf->count - 1 - buf->head;
-// n = (end + buf->tail) & (buf->count - 1);
- end = buf->mask - buf->head;
- n = (end + buf->tail) & (buf->mask);
- return (n <= end) ? n : (end + 1);
-}
-
-#define _CBUFF_32b_t
-
-# else //~BOSCH
-/// @note buf->mask = buf->count-1 = ME4600_AI_CIRC_BUF_COUNT-1
-
-# ifdef _CBUFF_32b_t
- //32 bit
-typedef struct me_circ_buf_32b {
- int volatile head;
- int volatile tail;
- unsigned int mask; //buffor size-1 must be 2^n-1 to work
- uint32_t *buf;
-} me_circ_buf_t;
-# else
- //16 bit
-typedef struct me_circ_buf_16b {
- int volatile head;
- int volatile tail;
- unsigned int mask; //buffor size-1 must be 2^n-1 to work
- uint16_t *buf;
-} me_circ_buf_t;
-# endif //_CBUFF_32b_t
-
-/** How many values is in buffer */
-static inline int me_circ_buf_values(me_circ_buf_t * buf)
-{
- return ((buf->head - buf->tail) & (buf->mask));
-}
-
-/** How many space left */
-static inline int me_circ_buf_space(me_circ_buf_t * buf)
-{
- return ((buf->tail - (buf->head + 1)) & (buf->mask));
-}
-
-/** How many values can be read from buffor in one chunck. */
-static inline int me_circ_buf_values_to_end(me_circ_buf_t * buf)
-{
- return (buf->tail <=
- buf->head) ? (buf->head - buf->tail) : (buf->mask - buf->tail +
- 1);
-}
-
-/** How many values can be write to buffer in one chunck. */
-static inline int me_circ_buf_space_to_end(me_circ_buf_t * buf)
-{
- return (buf->tail <=
- buf->head) ? (buf->mask - buf->head + 1) : (buf->tail -
- buf->head - 1);
-}
-
-# endif //BOSCH
-# endif //__KERNEL__
-#endif //_MECIRC_BUF_H_