[RFC PATCH] cammand/gpio: switch to getopt
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Thu Jun 9 14:03:04 EDT 2011
this will simplify the implementation and save 296 bytes
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
commands/gpio.c | 162 ++++++++++++++++++++++--------------------------------
1 files changed, 66 insertions(+), 96 deletions(-)
diff --git a/commands/gpio.c b/commands/gpio.c
index 073c9d3..af1fd39 100644
--- a/commands/gpio.c
+++ b/commands/gpio.c
@@ -19,113 +19,83 @@
#include <command.h>
#include <errno.h>
#include <gpio.h>
+#include <getopt.h>
-static int do_gpio_get_value(struct command *cmdtp, int argc, char *argv[])
+static int do_gpio(struct command *cmdtp, int argc, char *argv[])
{
- int gpio, value;
+ int opt;
+ int gpio = -1;
+ int value = -1;
+ int mode = -1;
+ int ret = 0;
- if (argc < 2)
+ if (!argc)
return COMMAND_ERROR_USAGE;
- gpio = simple_strtoul(argv[1], NULL, 0);
-
- value = gpio_get_value(gpio);
- if (value < 0)
+ while((opt = getopt(argc, argv, "g:oiS:G")) > 0) {
+ switch(opt) {
+ case 'g':
+ gpio = simple_strtoul(optarg, NULL, 0);
+ break;
+ case 'o':
+ mode = 1;
+ break;
+ case 'i':
+ mode = 2;
+ break;
+ case 'G':
+ mode = 3;
+ value = 0;
+ break;
+ case 'S':
+ if (mode != 1)
+ mode = 4;
+ value = simple_strtoul(optarg, NULL, 0);
+ break;
+
+ }
+ }
+
+ if (gpio < 0 || mode < 0 || value < 0)
return 1;
- return value;
-}
-
-BAREBOX_CMD_HELP_START(gpio_get_value)
-BAREBOX_CMD_HELP_USAGE("gpio_get_value <gpio>\n")
-BAREBOX_CMD_HELP_SHORT("get the value of an gpio input pin\n")
-BAREBOX_CMD_HELP_END
-
-BAREBOX_CMD_START(gpio_get_value)
- .cmd = do_gpio_get_value,
- .usage = "return value of a gpio pin",
- BAREBOX_CMD_HELP(cmd_gpio_get_value_help)
-BAREBOX_CMD_END
-
-static int do_gpio_set_value(struct command *cmdtp, int argc, char *argv[])
-{
- int gpio, value;
-
- if (argc < 3)
- return COMMAND_ERROR_USAGE;
-
- gpio = simple_strtoul(argv[1], NULL, 0);
- value = simple_strtoul(argv[2], NULL, 0);
-
- gpio_set_value(gpio, value);
-
- return 0;
-}
-
-BAREBOX_CMD_HELP_START(gpio_set_value)
-BAREBOX_CMD_HELP_USAGE("gpio_set_value <gpio> <value>\n")
-BAREBOX_CMD_HELP_SHORT("set the value of an gpio output pin\n")
-BAREBOX_CMD_HELP_END
-
-BAREBOX_CMD_START(gpio_set_value)
- .cmd = do_gpio_set_value,
- .usage = "set a gpio's output value",
- BAREBOX_CMD_HELP(cmd_gpio_set_value_help)
-BAREBOX_CMD_END
-
-static int do_gpio_direction_input(struct command *cmdtp, int argc, char *argv[])
-{
- int gpio, ret;
-
- if (argc < 2)
- return COMMAND_ERROR_USAGE;
-
- gpio = simple_strtoul(argv[1], NULL, 0);
-
- ret = gpio_direction_input(gpio);
- if (ret)
- return 1;
-
- return 0;
-}
-
-BAREBOX_CMD_HELP_START(gpio_direction_input)
-BAREBOX_CMD_HELP_USAGE("gpio_direction_input <gpio>\n")
-BAREBOX_CMD_HELP_SHORT("set direction of a gpio pin to input\n")
-BAREBOX_CMD_HELP_END
-
-BAREBOX_CMD_START(gpio_direction_input)
- .cmd = do_gpio_direction_input,
- .usage = "set direction of a gpio pin to input",
- BAREBOX_CMD_HELP(cmd_gpio_direction_input_help)
-BAREBOX_CMD_END
-
-static int do_gpio_direction_output(struct command *cmdtp, int argc, char *argv[])
-{
- int gpio, value, ret;
-
- if (argc < 3)
- return COMMAND_ERROR_USAGE;
-
- gpio = simple_strtoul(argv[1], NULL, 0);
- value = simple_strtoul(argv[2], NULL, 0);
+ switch (mode) {
+ case 1:
+ ret = gpio_direction_input(gpio);
+ break;
+ case 2:
+ ret = gpio_direction_output(gpio, value);
+ break;
+ case 3:
+ value = gpio_get_value(gpio);
+ if (value < 0)
+ return 1;
+ return value;
+ case 4:
+ gpio_set_value(gpio, value);
+ break;
+ }
- ret = gpio_direction_output(gpio, value);
if (ret)
return 1;
return 0;
}
-BAREBOX_CMD_HELP_START(gpio_direction_output)
-BAREBOX_CMD_HELP_USAGE("gpio_direction_output <gpio> <value>\n")
-BAREBOX_CMD_HELP_SHORT("set direction of a gpio pin to output\n")
+BAREBOX_CMD_HELP_START(gpio)
+BAREBOX_CMD_HELP_USAGE("gpio -g <gpio> [-o|-i] [-g|-s <value>]\n")
+BAREBOX_CMD_HELP_SHORT("gpio management\n")
+BAREBOX_CMD_HELP_OPT ("-g <gpio>", "gpio number\n")
+BAREBOX_CMD_HELP_OPT ("-o", "output mode (you need to specify a value\n")
+BAREBOX_CMD_HELP_OPT ("-i", "input mode\n")
+BAREBOX_CMD_HELP_OPT ("-G", "get value\n")
+BAREBOX_CMD_HELP_OPT ("-S", "set value\n")
BAREBOX_CMD_HELP_END
-BAREBOX_CMD_START(gpio_direction_output)
- .cmd = do_gpio_direction_output,
- .usage = "set direction of a gpio pin to output",
- BAREBOX_CMD_HELP(cmd_gpio_direction_output_help)
+BAREBOX_CMD_START(gpio)
+ .cmd = do_gpio,
+ .usage = "gpio management",
+ BAREBOX_CMD_HELP(cmd_gpio_help)
BAREBOX_CMD_END
/**
@@ -133,7 +103,7 @@ BAREBOX_CMD_END
@section regular_gpio General usage information
-These commands are available if the symbol @b CONFIG_GENERIC_GPIO and @b
+The gpio command are available if the symbol @b CONFIG_GENERIC_GPIO and @b
CONFIG_CMD_GPIO are enabled in Kconfig.
@note All gpio related commands take a number to identify the pad. This
@@ -143,7 +113,7 @@ between @b barebox releases.
@section gpio_dir_out Use Pad as GPIO Output
@verbatim
-# gpio_direction_output <gpio_no> <initial_value>
+# gpio -g <gpio_no> -S <initial_value>
@endverbatim
- gpio_no: Architecture dependend GPIO number
- initial_value: Output value
@@ -155,7 +125,7 @@ available), this command may silently fail. </p>
@section gpio_dir_in Use Pad as GPIO Input
@verbatim
-# gpio_direction_input <gpio_no>
+# gpio -g <gpio_no> -i
@endverbatim
- gpio_no: Architecture dependent GPIO number
@@ -164,7 +134,7 @@ this command may silently fail. </p>
@section gpio_get_value Read Input Value from GPIO Pin
@verbatim
-# gpio_get_value <gpio_no>
+# gpio -g <gpio_no> -G
@endverbatim
<p> Reads the current value of a GPIO pin and return the value as a
@@ -178,7 +148,7 @@ fail and return garbage. </p>
@section gpio_set_value Set Output Value on GPIO Pin
@verbatim
-# gpio_set_value <gpio_no> <value>
+# gpio -g <gpio_no> -S <value>
@endverbatim
- gpio_no: Architecture dependent GPIO number
- value: Output value
--
1.7.4.1
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