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| author | Simon Glass <sjg@chromium.org> | 2015-07-02 18:15:39 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-08-05 20:57:51 -0600 |
| commit | 7d7db2225c5e63a389ee04d63919f012e7ba880d (patch) | |
| tree | 66f8381e57291bc502753c87f1461dbe4a05b325 /drivers/i2c | |
| parent | d82ba4c0b457f0cb30da7bbee935aad7793e5fac (diff) | |
| download | blackbird-obmc-uboot-7d7db2225c5e63a389ee04d63919f012e7ba880d.tar.gz blackbird-obmc-uboot-7d7db2225c5e63a389ee04d63919f012e7ba880d.zip | |
dm: i2c: Add a message debug function
Add a way to dump the contents of an I2C message for debugging purposes.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-uclass.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c index eaba965fa3..42d6e89e9d 100644 --- a/drivers/i2c/i2c-uclass.c +++ b/drivers/i2c/i2c-uclass.c @@ -18,6 +18,22 @@ DECLARE_GLOBAL_DATA_PTR; #define I2C_MAX_OFFSET_LEN 4 +/* Useful debugging function */ +void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs) +{ + int i; + + for (i = 0; i < nmsgs; i++) { + struct i2c_msg *m = &msg[i]; + + printf(" %s %x len=%x", m->flags & I2C_M_RD ? "R" : "W", + msg->addr, msg->len); + if (!(m->flags & I2C_M_RD)) + printf(": %x", m->buf[0]); + printf("\n"); + } +} + /** * i2c_setup_offset() - Set up a new message with a chip offset * |
