Messages in this thread Patch in this message | | | From | Frank Li <> | Subject | [PATCH 2/5] i3c: add actual in i3c_priv_xfer | Date | Mon, 16 Oct 2023 11:46:29 -0400 |
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In MIPI I3C Specification:
"Ninth Bit of SDR Target Returned (Read) Data as End-of-Data: In I2C, the ninth Data bit from Target to Controller is an ACK by the Controller. By contrast, in I3C this bit allows the Target to end a Read, and allows the Controller to Abort a Read. In SDR terms, the ninth bit of Read data is referred to as the T-Bit (for ‘Transition’)"
I3C allow devices early terminate data transfer. So need "actual" field to indicate how much get by i3c_priv_xfer.
Signed-off-by: Frank Li <Frank.Li@nxp.com> --- include/linux/i3c/device.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h index 90fa83464f00..f2fa7ee5d96d 100644 --- a/include/linux/i3c/device.h +++ b/include/linux/i3c/device.h @@ -66,6 +66,7 @@ struct i3c_priv_xfer { void *in; const void *out; } data; + u16 actual; enum i3c_error_code err; }; -- 2.34.1
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