diff options
Diffstat (limited to 'arch/cris/arch-v10/drivers')
| -rw-r--r-- | arch/cris/arch-v10/drivers/i2c.c | 81 |
1 files changed, 3 insertions, 78 deletions
diff --git a/arch/cris/arch-v10/drivers/i2c.c b/arch/cris/arch-v10/drivers/i2c.c index aca81ddaf60..d6d22067d0c 100644 --- a/arch/cris/arch-v10/drivers/i2c.c +++ b/arch/cris/arch-v10/drivers/i2c.c @@ -6,85 +6,9 @@ *! kernel modules (i2c_writereg/readreg) and from userspace using *! ioctl()'s *! -*! Nov 30 1998 Torbjorn Eliasson Initial version. -*! Bjorn Wesen Elinux kernel version. -*! Jan 14 2000 Johan Adolfsson Fixed PB shadow register stuff - -*! don't use PB_I2C if DS1302 uses same bits, -*! use PB. -*! $Log: i2c.c,v $ -*! Revision 1.13 2005/03/07 13:13:07 starvik -*! Added spinlocks to protect states etc -*! -*! Revision 1.12 2005/01/05 06:11:22 starvik -*! No need to do local_irq_disable after local_irq_save. -*! -*! Revision 1.11 2004/12/13 12:21:52 starvik -*! Added I/O and DMA allocators from Linux 2.4 -*! -*! Revision 1.9 2004/08/24 06:49:14 starvik -*! Whitespace cleanup -*! -*! Revision 1.8 2004/06/08 08:48:26 starvik -*! Removed unused code -*! -*! Revision 1.7 2004/05/28 09:26:59 starvik -*! Modified I2C initialization to work in 2.6. -*! -*! Revision 1.6 2004/05/14 07:58:03 starvik -*! Merge of changes from 2.4 -*! -*! Revision 1.4 2002/12/11 13:13:57 starvik -*! Added arch/ to v10 specific includes -*! Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer) -*! -*! Revision 1.3 2002/11/20 11:56:11 starvik -*! Merge of Linux 2.5.48 -*! -*! Revision 1.2 2002/11/18 13:16:06 starvik -*! Linux 2.5 port of latest 2.4 drivers -*! -*! Revision 1.9 2002/10/31 15:32:26 starvik -*! Update Port B register and shadow even when running with hardware support -*! to avoid glitches when reading bits -*! Never set direction to out in i2c_inbyte -*! Removed incorrect clock toggling at end of i2c_inbyte -*! -*! Revision 1.8 2002/08/13 06:31:53 starvik -*! Made SDA and SCL line configurable -*! Modified i2c_inbyte to work with PCF8563 -*! -*! Revision 1.7 2001/04/04 13:11:36 markusl -*! Updated according to review remarks -*! -*! Revision 1.6 2001/03/19 12:43:00 markusl -*! Made some symbols unstatic (used by the eeprom driver) -*! -*! Revision 1.5 2001/02/27 13:52:48 bjornw -*! malloc.h -> slab.h -*! -*! Revision 1.4 2001/02/15 07:17:40 starvik -*! Corrected usage if port_pb_i2c_shadow -*! -*! Revision 1.3 2001/01/26 17:55:13 bjornw -*! * Made I2C_USES_PB_NOT_PB_I2C a CONFIG option instead of assigning it -*! magically. Config.in needs to set it for the options that need it, like -*! Dallas 1302 support. Actually, it should be default since it screws up -*! the PB bits even if you don't use I2C.. -*! * Include linux/config.h to get the above -*! -*! Revision 1.2 2001/01/18 15:49:30 bjornw -*! 2.4 port of I2C including some cleanups (untested of course) -*! -*! Revision 1.1 2001/01/18 15:35:25 bjornw -*! Verbatim copy of the Etrax i2c driver, 2.0 elinux version -*! -*! -*! --------------------------------------------------------------------------- -*! -*! (C) Copyright 1999-2002 Axis Communications AB, LUND, SWEDEN +*! (C) Copyright 1999-2007 Axis Communications AB, LUND, SWEDEN *! *!***************************************************************************/ -/* $Id: i2c.c,v 1.13 2005/03/07 13:13:07 starvik Exp $ */ /****************** INCLUDE FILES SECTION ***********************************/ @@ -622,7 +546,7 @@ i2c_readreg(unsigned char theSlave, unsigned char theReg) * last received byte needs to be nacked * instead of acked */ - i2c_sendack(); + i2c_sendnack(); /* * end sequence */ @@ -708,6 +632,7 @@ i2c_init(void) if (!first) { return res; } + first = 0; /* Setup and enable the Port B I2C interface */ |