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pinctrl: pinconf-generic: Add flag to print arguments 

When dumping pinconf information in debugfs, config arguments are only
printed when a unit is present and the argument is != 0. For parameters
like the slew rate, this does not work. The slew rate uses a driver
specific format for the argument, i.e. 0 can be a valid argument and a
unit is not provided for it.
For that reason, add a flag to enable printing the argument instead of
inferring it from the presence of a unit and the value of the argument.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Soren Brinkmann 2014-10-16 10:11:29 -07:00 committed by Linus Walleij
parent c61c2d7071
commit eec450713e
1 changed files with 37 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
drivers/pinctrl/pinconf-generic.c
View File

@ -32,30 +32,32 @@ struct pin_config_item {
const enum pin_config_param param;
const char * const display;
const char * const format;
bool has_arg;
};
#define PCONFDUMP(a, b, c) { .param = a, .display = b, .format = c }
#define PCONFDUMP(a, b, c, d) { .param = a, .display = b, .format = c, \
.has_arg = d }
static struct pin_config_item conf_items[] = {
PCONFDUMP(PIN_CONFIG_BIAS_DISABLE, "input bias disabled", NULL),
PCONFDUMP(PIN_CONFIG_BIAS_HIGH_IMPEDANCE, "input bias high impedance", NULL),
PCONFDUMP(PIN_CONFIG_BIAS_BUS_HOLD, "input bias bus hold", NULL),
PCONFDUMP(PIN_CONFIG_BIAS_PULL_UP, "input bias pull up", NULL),
PCONFDUMP(PIN_CONFIG_BIAS_PULL_DOWN, "input bias pull down", NULL),
PCONFDUMP(PIN_CONFIG_BIAS_DISABLE, "input bias disabled", NULL, false),
PCONFDUMP(PIN_CONFIG_BIAS_HIGH_IMPEDANCE, "input bias high impedance", NULL, false),
PCONFDUMP(PIN_CONFIG_BIAS_BUS_HOLD, "input bias bus hold", NULL, false),
PCONFDUMP(PIN_CONFIG_BIAS_PULL_UP, "input bias pull up", NULL, false),
PCONFDUMP(PIN_CONFIG_BIAS_PULL_DOWN, "input bias pull down", NULL, false),
PCONFDUMP(PIN_CONFIG_BIAS_PULL_PIN_DEFAULT,
"input bias pull to pin specific state", NULL),
PCONFDUMP(PIN_CONFIG_DRIVE_PUSH_PULL, "output drive push pull", NULL),
PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_DRAIN, "output drive open drain", NULL),
PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_SOURCE, "output drive open source", NULL),
PCONFDUMP(PIN_CONFIG_DRIVE_STRENGTH, "output drive strength", "mA"),
PCONFDUMP(PIN_CONFIG_INPUT_ENABLE, "input enabled", NULL),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_ENABLE, "input schmitt enabled", NULL),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL),
PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE, "input debounce", "usec"),
PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector"),
PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL),
PCONFDUMP(PIN_CONFIG_LOW_POWER_MODE, "pin low power", "mode"),
PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level"),
"input bias pull to pin specific state", NULL, false),
PCONFDUMP(PIN_CONFIG_DRIVE_PUSH_PULL, "output drive push pull", NULL, false),
PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_DRAIN, "output drive open drain", NULL, false),
PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_SOURCE, "output drive open source", NULL, false),
PCONFDUMP(PIN_CONFIG_DRIVE_STRENGTH, "output drive strength", "mA", true),
PCONFDUMP(PIN_CONFIG_INPUT_ENABLE, "input enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_ENABLE, "input schmitt enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE, "input debounce", "usec", true),
PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true),
PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true),
PCONFDUMP(PIN_CONFIG_LOW_POWER_MODE, "pin low power", "mode", true),
PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true),
};
void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
@ -85,11 +87,14 @@ void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
seq_puts(s, " ");
seq_puts(s, conf_items[i].display);
/* Print unit if available */
if (conf_items[i].format &&
pinconf_to_config_argument(config) != 0)
seq_printf(s, " (%u %s)",
pinconf_to_config_argument(config),
conf_items[i].format);
if (conf_items[i].has_arg) {
seq_printf(s, " (%u",
pinconf_to_config_argument(config));
if (conf_items[i].format)
seq_printf(s, " %s)", conf_items[i].format);
else
seq_puts(s, ")");
}
}
}
@ -121,10 +126,14 @@ void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
seq_puts(s, " ");
seq_puts(s, conf_items[i].display);
/* Print unit if available */
if (conf_items[i].format && config != 0)
seq_printf(s, " (%u %s)",
pinconf_to_config_argument(config),
conf_items[i].format);
if (conf_items[i].has_arg) {
seq_printf(s, " (%u",
pinconf_to_config_argument(config));
if (conf_items[i].format)
seq_printf(s, " %s)", conf_items[i].format);
else
seq_puts(s, ")");
}
}
}