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[80.27.209.50]) by smtp.gmail.com with ESMTPSA id t4sm666716wmf.4.2020.07.20.12.18.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2020 12:18:10 -0700 (PDT) From: Drew Fustini To: Andy Shevchenko , Tony Lindgren , Linus Walleij , linux-omap@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Jason Kridner , Robert Nelson Cc: Drew Fustini Subject: [PATCH v2] pinctrl: core: print gpio in pins debugfs file Date: Mon, 20 Jul 2020 21:17:41 +0200 Message-Id: <20200720191740.1974132-1-drew@beagleboard.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org 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 100 (PIN100) gpiochip:gpio-96-127 line-name:P1.36 [PWM0A] 44e10990 00000001 pinctrl-single pin 101 (PIN101) gpiochip:gpio-96-127 line-name:P1.33 [PRU0.1] 44e10994 00000027 pinctrl-single pin 102 (PIN102) gpiochip:gpio-96-127 line-name:P2.32 [PRU0.2] 44e10998 00000027 pinctrl-single pin 103 (PIN103) gpiochip:gpio-96-127 line-name:P2.30 [PRU0.3] 44e1099c 00000027 pinctrl-single pin 104 (PIN104) gpiochip:gpio-96-127 line-name:P1.31 [PRU0.4] 44e109a0 0000002c pinctrl-single pin 105 (PIN105) gpiochip:gpio-96-127 line-name:P2.34 [PRU0.5] 44e109a4 00000027 pinctrl-single pin 106 (PIN106) gpiochip:gpio-96-127 line-name:P2.28 [PRU0.6] 44e109a8 00000027 pinctrl-single pin 107 (PIN107) gpiochip:gpio-96-127 line-name:P1.29 [PRU0.7] 44e109ac 00000027 pinctrl-single pin 108 (PIN108) gpiochip:gpio-0-31 line-name:P2.31 [SPI1_CS] 44e109b0 00000027 pinctrl-single pin 109 (PIN109) gpiochip:gpio-0-31 line-name:P1.20 [PRU0.16] 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 pin 115 (PIN115) NA 44e109cc 00000028 pinctrl-single Suggested-by: Andy Shevchenko Suggested-by: Tony Lindgren Signed-off-by: Drew Fustini --- drivers/pinctrl/core.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) v2 changes: - only include GPIO information if CONFIG_GPIOLIB - print gpiochip and line name instead of global GPIO number diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 821242bb4b16..b61fab96c5c2 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 +1602,11 @@ 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; + struct gpio_desc *gdesc; + seq_printf(s, "registered pins: %d\n", pctldev->desc->npins); @@ -1618,6 +1624,30 @@ 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; + } + } + if (gpio_num > 0) { + chip = gpio_to_chip(gpio_num); + if (chip != NULL) { + if (chip->label) + seq_printf(s, "gpiochip:%s ", chip->label); + } + gdesc = gpio_to_desc(gpio_num); + if (gdesc != NULL) + if (gdesc->name) + seq_printf(s, "line-name:%s ", gdesc->name); + } else { + seq_puts(s, "NA "); + } +#endif + /* Driver-specific info per pin */ if (ops->pin_dbg_show) ops->pin_dbg_show(pctldev, s, pin);