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>
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 @@
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}
diff --git a/cpu/arm920t/at91rm9200/i2c.c b/cpu/arm920t/at91rm9200/i2c.c
index 9fd72d3..1711088 100644
--- a/cpu/arm920t/at91rm9200/i2c.c
+++ b/cpu/arm920t/at91rm9200/i2c.c
@@ -189,14 +189,4 @@
return;
}
-int i2c_set_bus_speed(unsigned int speed)
-{
- return -1;
-}
-
-unsigned int i2c_get_bus_speed(void)
-{
- return CONFIG_SYS_I2C_SPEED;
-}
-
#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/mpc512x/i2c.c b/cpu/mpc512x/i2c.c
index 4f6bc86..0da906a 100644
--- a/cpu/mpc512x/i2c.c
+++ b/cpu/mpc512x/i2c.c
@@ -397,18 +397,4 @@
return bus_num;
}
-/* TODO */
-unsigned int i2c_get_bus_speed (void)
-{
- return -1;
-}
-
-int i2c_set_bus_speed (unsigned int speed)
-{
- if (speed != CONFIG_SYS_I2C_SPEED)
- return -1;
-
- return 0;
-}
-
#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/mpc8260/i2c.c b/cpu/mpc8260/i2c.c
index 2b954b4..d2bdcc2 100644
--- a/cpu/mpc8260/i2c.c
+++ b/cpu/mpc8260/i2c.c
@@ -780,19 +780,6 @@
#endif
return 0;
}
-/* TODO: add 100/400k switching */
-unsigned int i2c_get_bus_speed(void)
-{
- return CONFIG_SYS_I2C_SPEED;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
- if (speed != CONFIG_SYS_I2C_SPEED)
- return -1;
-
- return 0;
-}
#endif /* CONFIG_I2C_MULTI_BUS */
#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/ppc4xx/i2c.c b/cpu/ppc4xx/i2c.c
index 9d416ca..e3e1bab 100644
--- a/cpu/ppc4xx/i2c.c
+++ b/cpu/ppc4xx/i2c.c
@@ -438,18 +438,4 @@
return 0;
}
#endif /* CONFIG_I2C_MULTI_BUS */
-
-/* TODO: add 100/400k switching */
-unsigned int i2c_get_bus_speed(void)
-{
- return CONFIG_SYS_I2C_SPEED;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
- if (speed != CONFIG_SYS_I2C_SPEED)
- return -1;
-
- return 0;
-}
#endif /* CONFIG_HARD_I2C */
diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c
index 185634d..59883a5 100644
--- a/drivers/i2c/soft_i2c.c
+++ b/drivers/i2c/soft_i2c.c
@@ -244,20 +244,6 @@
}
#endif
-/* TODO: add 100/400k switching */
-unsigned int i2c_get_bus_speed(void)
-{
- return CONFIG_SYS_I2C_SPEED;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
- if (speed != CONFIG_SYS_I2C_SPEED)
- return -1;
-
- return 0;
-}
-
/*-----------------------------------------------------------------------
* if ack == I2C_ACK, ACK the byte so can continue reading, else
* send I2C_NOACK to end the read.