i2cdump: Deprecate SMBus block mode

i2cget is a better fit for this mode. Having it in i2cdump requires
special-casing in various places, which makes the code harder to read
and maintain.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

tools/i2cdump.8

@@ -106,21 +106,16 @@ confirmation:
 # i2cdump -r 0x00-0x3f 1 0x2d
 .RE
 .fi
-.PP
-Dump the registers of the SMBus device at address 0x69 on bus 0 (i2c-0),
-using one SMBus block read transaction with error checking enabled, after
-user confirmation:
-.nf
-.RS
-# i2cdump 0 0x69 sp
-.RE
-.fi
 
 .SH BUGS
 To report bugs or send fixes, please write to the Linux I2C mailing list
 <linux-i2c@vger.kernel.org> with Cc to the current maintainer:
 Jean Delvare <jdelvare@suse.de>.
 
+SMBus block mode is deprecated and will be removed in a future version
+of this tool.
+Please use \fIi2cget\fR instead.
+
 .SH SEE ALSO
 i2cdetect(8), i2cget(8), i2cset(8), i2ctransfer(8), isadump(8)
 

tools/i2cdump.c

@@ -43,7 +43,7 @@ static void help(void)
 		"    b (byte, default)\n"
 		"    w (word)\n"
 		"    W (word on even register addresses)\n"
-		"    s (SMBus block)\n"
+		"    s (SMBus block, deprecated)\n"
 		"    i (I2C block)\n"
 		"    c (consecutive byte)\n"
 		"    Append p for SMBus PEC\n");
@@ -181,6 +181,8 @@ int main(int argc, char *argv[])
 		even = 1;
 	} else if (!strncmp(argv[flags+3], "s", 1)) {
 		size = I2C_SMBUS_BLOCK_DATA;
+		fprintf(stderr,
+			"SMBus block mode is deprecated, please use i2cget instead\n");
 		pec = argv[flags+3][1] == 'p';
 	} else if (!strncmp(argv[flags+3], "c", 1)) {
 		size = I2C_SMBUS_BYTE;