Hello Simon,
Am 03.07.2015 um 02:15 schrieb Simon Glass:
Add a way to dump the contents of an I2C message for debugging purposes.
Signed-off-by: Simon Glass sjg@chromium.org
drivers/i2c/i2c-uclass.c | 16 ++++++++++++++++ include/i2c.h | 10 ++++++++++ 2 files changed, 26 insertions(+)
Acked-by: Heiko Schocher hs@denx.de
bye, Heiko
diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c index eaba965..42d6e89 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
diff --git a/include/i2c.h b/include/i2c.h index 9300d97..a5498a3 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -473,6 +473,16 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len, int i2c_chip_ofdata_to_platdata(const void *blob, int node, struct dm_i2c_chip *chip);
+/**
- i2c_dump_msgs() - Dump a list of I2C messages
- This may be useful for debugging.
- @msg: Message list to dump
- @nmsgs: Number of messages
- */
+void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs);
#ifndef CONFIG_DM_I2C
/*