From: Drew Fustini <drew@beagleboard.org>
To: Andy Shevchenko <andy.shevchenko@gmail.com>,
Tony Lindgren <tony@atomide.com>,
Linus Walleij <linus.walleij@linaro.org>,
linux-omap@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org,
Jason Kridner <jkridner@beagleboard.org>,
Robert Nelson <robertcnelson@gmail.com>
Cc: Drew Fustini <drew@beagleboard.org>
Subject: [PATCH v2] pinctrl: core: print gpio in pins debugfs file
Date: Sun, 19 Jul 2020 15:22:01 +0200 [thread overview]
Message-ID: <20200719132200.1878265-1-drew@beagleboard.org> (raw)
If there is a gpio range mapping for the pin, then print out the gpio
number for the pin in the debugfs 'pins' file.
Here is an example output on the BeagleBone Black from:
/sys/kernel/debug/pinctrl/44e10800.pinmux-pinctrl-single/pins
pin 103 (PIN103) GPIO-113 44e1099c 00000027 pinctrl-single
pin 104 (PIN104) GPIO-114 44e109a0 0000002c pinctrl-single
pin 105 (PIN105) GPIO-115 44e109a4 00000027 pinctrl-single
pin 106 (PIN106) GPIO-116 44e109a8 00000027 pinctrl-single
pin 107 (PIN107) GPIO-117 44e109ac 00000027 pinctrl-single
pin 108 (PIN108) GPIO-19 44e109b0 00000027 pinctrl-single
pin 109 (PIN109) GPIO-20 44e109b4 00000027 pinctrl-single
pin 110 (PIN110) NA 44e109b8 00000030 pinctrl-single
pin 111 (PIN111) NA 44e109bc 00000028 pinctrl-single
pin 112 (PIN112) NA 44e109c0 00000030 pinctrl-single
pin 113 (PIN113) NA 44e109c4 00000028 pinctrl-single
pin 114 (PIN114) NA 44e109c8 00000028 pinctrl-single
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Suggested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Drew Fustini <drew@beagleboard.org>
---
drivers/pinctrl/core.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
v2 changes:
- print 'NA' if pin does not have a GPIO number
- change gpio_num from unsigned to unsigned int per checkpatch
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 821242bb4b16..8478025926a2 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -1601,6 +1601,8 @@ static int pinctrl_pins_show(struct seq_file *s, void *what)
struct pinctrl_dev *pctldev = s->private;
const struct pinctrl_ops *ops = pctldev->desc->pctlops;
unsigned i, pin;
+ struct pinctrl_gpio_range *range;
+ unsigned int gpio_num;
seq_printf(s, "registered pins: %d\n", pctldev->desc->npins);
@@ -1618,6 +1620,18 @@ static int pinctrl_pins_show(struct seq_file *s, void *what)
seq_printf(s, "pin %d (%s) ", pin, desc->name);
+ gpio_num = 0;
+ list_for_each_entry(range, &pctldev->gpio_ranges, node) {
+ if ((pin >= range->pin_base) &&
+ (pin < (range->pin_base + range->npins)))
+ gpio_num = range->base + (pin - range->pin_base);
+ }
+
+ if (gpio_num > 0)
+ seq_printf(s, "GPIO-%u ", gpio_num);
+ else
+ seq_puts(s, "NA ");
+
/* Driver-specific info per pin */
if (ops->pin_dbg_show)
ops->pin_dbg_show(pctldev, s, pin);
--
2.25.1
next reply other threads:[~2020-07-19 13:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-19 13:22 Drew Fustini [this message]
2020-07-19 13:28 ` [PATCH v2] pinctrl: core: print gpio in pins debugfs file Drew Fustini
2020-07-20 19:17 Drew Fustini
2020-07-21 6:49 ` Andy Shevchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200719132200.1878265-1-drew@beagleboard.org \
--to=drew@beagleboard.org \
--cc=andy.shevchenko@gmail.com \
--cc=jkridner@beagleboard.org \
--cc=linus.walleij@linaro.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=robertcnelson@gmail.com \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.