diff options
| author | Peter Tyser <ptyser@xes-inc.com> | 2009-04-24 15:34:07 -0500 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-06-12 20:39:45 +0200 |
| commit | a056b1ce9e19b4d4ab3dd01c3f897dcd832cd37f (patch) | |
| tree | 2aa3fdbc71f996ed1066455e74149ee6fa8214c1 /board/Marvell/common/i2c.c | |
| parent | 54afc6ee10c8cd09598d814d49e601359b005e49 (diff) | |
| download | u-boot-imx-a056b1ce9e19b4d4ab3dd01c3f897dcd832cd37f.zip u-boot-imx-a056b1ce9e19b4d4ab3dd01c3f897dcd832cd37f.tar.gz u-boot-imx-a056b1ce9e19b4d4ab3dd01c3f897dcd832cd37f.tar.bz2 | |
Marvell: i2c cleanup
The following changes were made, primarily to bring the Marvell i2c
driver in line with U-Boot's current I2C API:
- Made i2c_init() globally accessible
- Made i2c_read() and i2c_write() return an integer
- Updated i2c_init() calls to pass in CONFIG_SYS_I2C_SLAVE in the
offhand chance someone adds slave support in the future
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'board/Marvell/common/i2c.c')
| -rw-r--r-- | board/Marvell/common/i2c.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/board/Marvell/common/i2c.c b/board/Marvell/common/i2c.c index d426044..8d87b2d 100644 --- a/board/Marvell/common/i2c.c +++ b/board/Marvell/common/i2c.c @@ -26,6 +26,7 @@ #include <common.h> #include <mpc8xx.h> #include <malloc.h> +#include <i2c.h> #include "../include/mv_gen_reg.h" #include "../include/core.h" @@ -42,7 +43,7 @@ /* Assuming that there is only one master on the bus (us) */ -static void i2c_init (int speed, int slaveaddr) +void i2c_init (int speed, int slaveaddr) { unsigned int n, m, freq, margin, power; unsigned int actualN = 0, actualM = 0; @@ -367,7 +368,7 @@ i2c_set_dev_offset (uchar dev_addr, unsigned int offset, int ten_bit, return 0; /* sucessful completion */ } -uchar +int i2c_read (uchar dev_addr, unsigned int offset, int alen, uchar * data, int len) { @@ -376,7 +377,8 @@ i2c_read (uchar dev_addr, unsigned int offset, int alen, uchar * data, DP (puts ("i2c_read\n")); - i2c_init (i2cFreq, 0); /* set the i2c frequency */ + /* set the i2c frequency */ + i2c_init (i2cFreq, CONFIG_SYS_I2C_SLAVE); status = i2c_start (); @@ -396,7 +398,8 @@ i2c_read (uchar dev_addr, unsigned int offset, int alen, uchar * data, return status; } - i2c_init (i2cFreq, 0); /* set the i2c frequency again */ + /* set the i2c frequency again */ + i2c_init (i2cFreq, CONFIG_SYS_I2C_SLAVE); status = i2c_start (); if (status) { @@ -442,7 +445,7 @@ void i2c_stop (void) /* */ /* returns 0 = succesful */ /* anything but zero is failure */ -uchar +int i2c_write (uchar dev_addr, unsigned int offset, int alen, uchar * data, int len) { @@ -451,7 +454,8 @@ i2c_write (uchar dev_addr, unsigned int offset, int alen, uchar * data, DP (puts ("i2c_write\n")); - i2c_init (i2cFreq, 0); /* set the i2c frequency */ + /* set the i2c frequency */ + i2c_init (i2cFreq, CONFIG_SYS_I2C_SLAVE); status = i2c_start (); /* send a start bit */ @@ -504,7 +508,8 @@ int i2c_probe (uchar chip) DP (puts ("i2c_probe\n")); - i2c_init (i2cFreq, 0); /* set the i2c frequency */ + /* set the i2c frequency */ + i2c_init (i2cFreq, CONFIG_SYS_I2C_SLAVE); status = i2c_start (); /* send a start bit */ |