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drivers/sysfsgpio: fix usage messages 

The notation "(tck tms tdi tdo)* " is incorrect, because it means the
quadruple of gpio can be repeated on the command-line.
The correct syntax of the command requires instead to provide either
all the four gpio numbers (in order to set the values) or to pass an
empty command-line (to dump the values previously set).

Change the .usage field to "[tck tms tdi tdo]".
Change similarly the corresponding .usage field for SWD command.
Add the .usage field for the commands that individually set each gpio.

Change-Id: If5b3c618097b71dfe7fcf988fb3c1499ae03a6d5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4833
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Antonio Borneo 2019-01-04 18:08:20 +01:00 committed by Tomas Vanek
parent 31ea7037b3
commit 87adca299d
1 changed files with 10 additions and 2 deletions
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12
src/jtag/drivers/sysfsgpio.c
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@ -457,62 +457,70 @@ static const struct command_registration sysfsgpio_command_handlers[] = {
.handler = &sysfsgpio_handle_jtag_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for tck, tms, tdi, tdo. (in that order)",
.usage = "(tck tms tdi tdo)* ",
.usage = "[tck tms tdi tdo]",
},
{
.name = "sysfsgpio_tck_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tck,
.mode = COMMAND_CONFIG,
.help = "gpio number for tck.",
.usage = "[tck]",
},
{
.name = "sysfsgpio_tms_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tms,
.mode = COMMAND_CONFIG,
.help = "gpio number for tms.",
.usage = "[tms]",
},
{
.name = "sysfsgpio_tdo_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tdo,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdo.",
.usage = "[tdo]",
},
{
.name = "sysfsgpio_tdi_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tdi,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdi.",
.usage = "[tdi]",
},
{
.name = "sysfsgpio_srst_num",
.handler = &sysfsgpio_handle_jtag_gpionum_srst,
.mode = COMMAND_CONFIG,
.help = "gpio number for srst.",
.usage = "[srst]",
},
{
.name = "sysfsgpio_trst_num",
.handler = &sysfsgpio_handle_jtag_gpionum_trst,
.mode = COMMAND_CONFIG,
.help = "gpio number for trst.",
.usage = "[trst]",
},
{
.name = "sysfsgpio_swd_nums",
.handler = &sysfsgpio_handle_swd_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for swclk, swdio. (in that order)",
.usage = "(swclk swdio)* ",
.usage = "[swclk swdio]",
},
{
.name = "sysfsgpio_swclk_num",
.handler = &sysfsgpio_handle_swd_gpionum_swclk,
.mode = COMMAND_CONFIG,
.help = "gpio number for swclk.",
.usage = "[swclk]",
},
{
.name = "sysfsgpio_swdio_num",
.handler = &sysfsgpio_handle_swd_gpionum_swdio,
.mode = COMMAND_CONFIG,
.help = "gpio number for swdio.",
.usage = "[swdio]",
},
COMMAND_REGISTRATION_DONE
};