diff options
| author | Peter Tyser <ptyser@xes-inc.com> | 2009-04-18 22:34:01 -0500 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-06-12 20:39:45 +0200 |
| commit | 655b34a78adf60ef260981688837904208883ae9 (patch) | |
| tree | fcf5dc101741e5d250ffc90fc0ed90c524428eaa /common | |
| parent | 8229e9c04f7019ddd76aea05d4dca044cbc9a34a (diff) | |
| download | u-boot-imx-655b34a78adf60ef260981688837904208883ae9.zip u-boot-imx-655b34a78adf60ef260981688837904208883ae9.tar.gz u-boot-imx-655b34a78adf60ef260981688837904208883ae9.tar.bz2 | |
i2c: Create common default i2c_[set|get]_bus_speed() functions
New default, weak i2c_get_bus_speed() and i2c_set_bus_speed() functions
replace a number of architecture-specific implementations.
Also, providing default functions will allow all boards to enable
CONFIG_I2C_CMD_TREE. This was previously not possible since the
tree-form of the i2c command provides the ability to display and modify
the i2c bus speed which requires i2c_[set|get]_bus_speed() to be
present.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_i2c.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c index 16439ac..c071df7 100644 --- a/common/cmd_i2c.c +++ b/common/cmd_i2c.c @@ -138,6 +138,24 @@ DECLARE_GLOBAL_DATA_PTR; static int mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]); +/* TODO: Implement architecture-specific get/set functions */ +unsigned int __def_i2c_get_bus_speed(void) +{ + return CONFIG_SYS_I2C_SPEED; +} +unsigned int i2c_get_bus_speed(void) + __attribute__((weak, alias("__def_i2c_get_bus_speed"))); + +int __def_i2c_set_bus_speed(unsigned int speed) +{ + if (speed != CONFIG_SYS_I2C_SPEED) + return -1; + + return 0; +} +int i2c_set_bus_speed(unsigned int) + __attribute__((weak, alias("__def_i2c_set_bus_speed"))); + /* * Syntax: * imd {i2c_chip} {addr}{.0, .1, .2} {len} |