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[80.27.177.172]) by smtp.gmail.com with ESMTPSA id k131sm7728855wmb.36.2020.07.22.05.29.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2020 05:29:19 -0700 (PDT) From: Drew Fustini To: Andy Shevchenko , Tony Lindgren , Linus Walleij , Bartosz Golaszewski , Grygorii Strashko , Santosh Shilimkar , Kevin Hilman , linux-omap@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Drew Fustini , Andy Shevchenko Subject: [PATCH v5] pinctrl: core: print gpio in pins debugfs file Date: Wed, 22 Jul 2020 14:27:52 +0200 Message-Id: <20200722122751.266440-1-drew@beagleboard.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If there is a gpio range mapping for the pin, then print out the gpio chip and line index for the pin in the debugfs 'pins' file with the format: "[line-index]:[gpio-label]" Here is example output on the BeagleBoard.org PocketBeagle (AM3358): /sys/kernel/debug/pinctrl/44e10800.pinmux-pinctrl-single/pins pin 25 (PIN25) 25:gpio-32-63 44e10864 00000037 pinctrl-single pin 26 (PIN26) 26:gpio-32-63 44e10868 00000037 pinctrl-single pin 27 (PIN27) 27:gpio-32-63 44e1086c 00000037 pinctrl-single pin 28 (PIN28) 0:? 44e10870 00000036 pinctrl-single pin 29 (PIN29) 0:? 44e10874 00000006 pinctrl-single pin 30 (PIN30) 28:gpio-32-63 44e10878 00000027 pinctrl-single pin 31 (PIN31) 29:gpio-32-63 44e1087c 00000037 pinctrl-single pin 32 (PIN32) 30:gpio-32-63 44e10880 00000037 pinctrl-single pin 33 (PIN33) 31:gpio-32-63 44e10884 00000037 pinctrl-single pin 34 (PIN34) 0:gpio-64-95 44e10888 00000037 pinctrl-single pin 35 (PIN35) 1:gpio-64-95 44e1088c 00000037 pinctrl-single Suggested-by: Andy Shevchenko Suggested-by: Tony Lindgren Reviewed-by: Andy Shevchenko Signed-off-by: Drew Fustini --- drivers/pinctrl/core.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) v4 changes: - Andy suggested '0:?' would be better because GPIO library uses '?' in cases of unknown labels v3 changes: - gpio column is now gpiochip label and line index 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..02a4cc3b60c8 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -27,6 +27,7 @@ #include #ifdef CONFIG_GPIOLIB +#include "../gpio/gpiolib.h" #include #endif @@ -1601,6 +1602,9 @@ 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; + struct gpio_chip *chip; seq_printf(s, "registered pins: %d\n", pctldev->desc->npins); @@ -1618,6 +1622,23 @@ static int pinctrl_pins_show(struct seq_file *s, void *what) seq_printf(s, "pin %d (%s) ", pin, desc->name); +#ifdef CONFIG_GPIOLIB + 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); + break; + } + } + chip = gpio_to_chip(gpio_num); + if (chip && chip->gpiodev && chip->gpiodev->base) + seq_printf(s, "%u:%s ", gpio_num - + chip->gpiodev->base, chip->label); + else + seq_puts(s, "0:? "); +#endif + /* Driver-specific info per pin */ if (ops->pin_dbg_show) ops->pin_dbg_show(pctldev, s, pin); -- 2.25.1