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authorHeiko Schocher <hs@denx.de>2008-10-15 09:34:45 +0200
committerWolfgang Denk <wd@denx.de>2008-10-18 21:54:01 +0200
commit799b784aa00cb03a352847ab9f9acdde79b72d21 (patch)
treeb5f312814dbc1a8a30bdeec41c06dd793f70a69d /cpu/mpc8260
parent0809ea2f4340ab2047400c7d3d3047f97987d0fd (diff)
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i2c: add CONFIG_I2C_MULTI_BUS for soft_i2c and mpc8260 i2c driver.
Signed-off-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'cpu/mpc8260')
-rw-r--r--cpu/mpc8260/i2c.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/cpu/mpc8260/i2c.c b/cpu/mpc8260/i2c.c
index c3af7b6..335177f 100644
--- a/cpu/mpc8260/i2c.c
+++ b/cpu/mpc8260/i2c.c
@@ -36,6 +36,10 @@
DECLARE_GLOBAL_DATA_PTR;
+#if defined(CONFIG_I2C_MULTI_BUS)
+static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = 0;
+#endif /* CONFIG_I2C_MULTI_BUS */
+
/* uSec to wait between polls of the i2c */
#define DELAY_US 100
/* uSec to wait for the CPM to start processing the buffer */
@@ -765,4 +769,36 @@ i2c_reg_write(uchar chip, uchar reg, uchar val)
i2c_write(chip, reg, 1, &val, 1);
}
+#if defined(CONFIG_I2C_MULTI_BUS)
+/*
+ * Functions for multiple I2C bus handling
+ */
+unsigned int i2c_get_bus_num(void)
+{
+ return i2c_bus_num;
+}
+
+int i2c_set_bus_num(unsigned int bus)
+{
+ if (bus >= CFG_MAX_I2C_BUS)
+ return -1;
+ i2c_bus_num = bus;
+
+ return 0;
+}
+/* TODO: add 100/400k switching */
+unsigned int i2c_get_bus_speed(void)
+{
+ return CFG_I2C_SPEED;
+}
+
+int i2c_set_bus_speed(unsigned int speed)
+{
+ if (speed != CFG_I2C_SPEED)
+ return -1;
+
+ return 0;
+}
+
+#endif /* CONFIG_I2C_MULTI_BUS */
#endif /* CONFIG_HARD_I2C */