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pinctrl: improve debugfs for strict controllers 

If we know we are using a strict pin controller (one that cannot
mix device functions+group use and GPIO) we can be a bit more
specific in debugfs, just print either device-function-group
or GPIO consumer for the pin. Let's do that to be helpful.

Cc: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2015-05-28 10:11:19 +02:00
parent a2202a4c76
commit 8150885503
1 changed files with 33 additions and 8 deletions
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41
drivers/pinctrl/pinmux.c
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@ -585,7 +585,12 @@ static int pinmux_pins_show(struct seq_file *s, void *what)
return 0;
seq_puts(s, "Pinmux settings per pin\n");
seq_puts(s, "Format: pin (name): mux_owner gpio_owner hog?\n");
if (pmxops->strict)
seq_puts(s,
"Format: pin (name): mux_owner|gpio_owner (strict) hog?\n");
else
seq_puts(s,
"Format: pin (name): mux_owner gpio_owner hog?\n");
mutex_lock(&pctldev->mutex);
@ -604,14 +609,34 @@ static int pinmux_pins_show(struct seq_file *s, void *what)
!strcmp(desc->mux_owner, pinctrl_dev_get_name(pctldev)))
is_hog = true;
seq_printf(s, "pin %d (%s): %s %s%s", pin,
desc->name ? desc->name : "unnamed",
desc->mux_owner ? desc->mux_owner
: "(MUX UNCLAIMED)",
desc->gpio_owner ? desc->gpio_owner
: "(GPIO UNCLAIMED)",
is_hog ? " (HOG)" : "");
if (pmxops->strict) {
if (desc->mux_owner)
seq_printf(s, "pin %d (%s): device %s%s",
pin,
desc->name ? desc->name : "unnamed",
desc->mux_owner,
is_hog ? " (HOG)" : "");
else if (desc->gpio_owner)
seq_printf(s, "pin %d (%s): GPIO %s",
pin,
desc->name ? desc->name : "unnamed",
desc->gpio_owner);
else
seq_printf(s, "pin %d (%s): UNCLAIMED",
pin,
desc->name ? desc->name : "unnamed");
} else {
/* For non-strict controllers */
seq_printf(s, "pin %d (%s): %s %s%s", pin,
desc->name ? desc->name : "unnamed",
desc->mux_owner ? desc->mux_owner
: "(MUX UNCLAIMED)",
desc->gpio_owner ? desc->gpio_owner
: "(GPIO UNCLAIMED)",
is_hog ? " (HOG)" : "");
}
/* If mux: print function+group claiming the pin */
if (desc->mux_setting)
seq_printf(s, " function %s group %s\n",
pmxops->get_function_name(pctldev,