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pinctrl: improve warning messages 

Print out the affected group name on activation of pin mux
settings, and warn if you cannot free a pin that should have
been part of a certain setting.

ChangeLog v1->v2:
- Also print the pin name in the error messages.

Cc: Sonic Zhang <sonic.zhang@analog.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2013-08-14 18:23:33 +02:00
parent 0a8d3e2412
commit 1c8e794432
1 changed files with 35 additions and 6 deletions
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41
drivers/pinctrl/pinmux.c
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@ -400,10 +400,14 @@ int pinmux_enable_setting(struct pinctrl_setting const *setting)
ret = pctlops->get_group_pins(pctldev, setting->data.mux.group,
&pins, &num_pins);
if (ret) {
const char *gname;
/* errors only affect debug data, so just warn */
gname = pctlops->get_group_name(pctldev,
setting->data.mux.group);
dev_warn(pctldev->dev,
"could not get pins for group selector %d\n",
setting->data.mux.group);
"could not get pins for group %s\n",
gname);
num_pins = 0;
}
@ -411,9 +415,18 @@ int pinmux_enable_setting(struct pinctrl_setting const *setting)
for (i = 0; i < num_pins; i++) {
ret = pin_request(pctldev, pins[i], setting->dev_name, NULL);
if (ret) {
const char *gname;
const char *pname;
desc = pin_desc_get(pctldev, pins[i]);
pname = desc ? desc->name : "non-existing";
gname = pctlops->get_group_name(pctldev,
setting->data.mux.group);
dev_err(pctldev->dev,
"could not request pin %d on device %s\n",
pins[i], pinctrl_dev_get_name(pctldev));
"could not request pin %d (%s) from group %s "
" on device %s\n",
pins[i], pname, gname,
pinctrl_dev_get_name(pctldev));
goto err_pin_request;
}
}
@ -466,10 +479,14 @@ void pinmux_disable_setting(struct pinctrl_setting const *setting)
ret = pctlops->get_group_pins(pctldev, setting->data.mux.group,
&pins, &num_pins);
if (ret) {
const char *gname;
/* errors only affect debug data, so just warn */
gname = pctlops->get_group_name(pctldev,
setting->data.mux.group);
dev_warn(pctldev->dev,
"could not get pins for group selector %d\n",
setting->data.mux.group);
"could not get pins for group %s\n",
gname);
num_pins = 0;
}
@ -486,6 +503,18 @@ void pinmux_disable_setting(struct pinctrl_setting const *setting)
desc->mux_setting = NULL;
/* And release the pin */
pin_free(pctldev, pins[i], NULL);
} else {
const char *gname;
const char *pname;
pname = desc ? desc->name : "non-existing";
gname = pctlops->get_group_name(pctldev,
setting->data.mux.group);
dev_warn(pctldev->dev,
"not freeing pin %d (%s) as part of "
"deactivating group %s - it is already "
"used for some other setting",
pins[i], pname, gname);
}
}