From patchwork Thu Nov 30 10:40:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 748829 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="ZxrGU0sS" Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 09AA010E5 for ; Thu, 30 Nov 2023 02:40:29 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id ffacd0b85a97d-3316c6e299eso510771f8f.1 for ; Thu, 30 Nov 2023 02:40:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1701340827; x=1701945627; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=CWP4eap09zW919QW4E5s7jvXuCi8hDmjmiTB3wR4l3U=; b=ZxrGU0sS0PkdSYLgBM628TauRmP5PFsFUDH9Hl5Wth8tm5r60O5awrPUeVVLUlDxZM L0xIZNDXzh023kmOQ5xkuLgoIB3lEfVmSKYj5lfUZOgyVKdzvixhccLwsdyWrFjkKepb 8ybOVzjB6YCjNe92y/3UHLSxwlgojc8Hl2Qs8jmjIvPC8Q/JUgorzOczpwIl1IFWGe/H 8Qfa3gYOgRI5a233Tu7yScfCMVE6yasAHEuNogRZ37T0nlMePv8xo3SJ+AY0K6u9L7VK sOK2P1H6+5rpx+DEUSw/VbZIvW+u4FQvskvFzyDEUQMlhdU/VB/x8qF5ctc/Tq7ymnUV latw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701340827; x=1701945627; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=CWP4eap09zW919QW4E5s7jvXuCi8hDmjmiTB3wR4l3U=; b=Dhwyk2/dmt2XSuqQ0skoUlpwrKGCir1yVGKzaawBswKx2ditdViunYZ8V5kmWrvOpj CXo8PvGJZEyApqBWXVeTM+IJg/4r7oEYPBno6vsCalRv3Nc3NiTprRAQ0OXFb5mXJX+x c3jIjMX95/ifyQONBujiW6BsrFm1jHJXkyOf0QANov2yHlvQG/Hvu0n0jogCh24M2nQs hT+rZnNjZwuQbK4ZDnNVIwOVvjFR1xuk5NnuO6Kt+LQ1RwMFrG+majdR/L7BSFZttyWU hEYu+UTJrITwi9QF3fOrKz7cKQXKB+p450/hicTKL4DViPJZHHF2YbrQ0YFArnowd+Ha pRWw== X-Gm-Message-State: AOJu0YxMtkKVkVdRGGu3iKWCr/0XHhD2nBaUSZnZTZzYhTbRbRLM4ej1 Mmo8oyBPi4Ld8sAr++pd7d8+QrO++RJ9VOWHbYE= X-Google-Smtp-Source: AGHT+IE32JyZOdFjeoOQW/D6eZambqTnRGbi7npeYSK8ldqD1D4UVoDOQSEAYAn+Joi6xBQuKfh/bw== X-Received: by 2002:adf:eb08:0:b0:333:635:c9b3 with SMTP id s8-20020adfeb08000000b003330635c9b3mr7698737wrn.16.1701340827266; Thu, 30 Nov 2023 02:40:27 -0800 (PST) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:ae84:904:6602:ec1e]) by smtp.gmail.com with ESMTPSA id l8-20020a5d4bc8000000b003316b3d69b3sm1161545wrt.46.2023.11.30.02.40.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Nov 2023 02:40:26 -0800 (PST) From: Bartosz Golaszewski To: Linus Walleij , Andy Shevchenko , Kent Gibson Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH] gpio: sim: implement the dbg_show() callback Date: Thu, 30 Nov 2023 11:40:23 +0100 Message-Id: <20231130104023.11885-1-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski Provide a custom implementation of the dbg_show() callback that prints all requested lines together with their label, direction, value and bias. This improves the code coverage of GPIOLIB. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpio-sim.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c index 1928209491e1..f60b0988c4db 100644 --- a/drivers/gpio/gpio-sim.c +++ b/drivers/gpio/gpio-sim.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -224,6 +225,29 @@ static void gpio_sim_free(struct gpio_chip *gc, unsigned int offset) } } +#if IS_ENABLED(CONFIG_DEBUG_FS) +static void gpio_sim_dbg_show(struct seq_file *seq, struct gpio_chip *gc) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + const char *label; + int i; + + guard(mutex)(&chip->lock); + + for_each_requested_gpio(gc, i, label) + seq_printf(seq, " gpio-%-3d (%s) %s,%s\n", + gc->base + i, + label, + test_bit(i, chip->direction_map) ? "input" : + test_bit(i, chip->value_map) ? "output-high" : + "output-low", + test_bit(i, chip->pull_map) ? "pull-up" : + "pull-down"); +} +#else +#define gpio_sim_dbg_show NULL +#endif /* CONFIG_DEBUG_FS */ + static ssize_t gpio_sim_sysfs_val_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -460,6 +484,7 @@ static int gpio_sim_add_bank(struct fwnode_handle *swnode, struct device *dev) gc->to_irq = gpio_sim_to_irq; gc->request = gpio_sim_request; gc->free = gpio_sim_free; + gc->dbg_show = gpio_sim_dbg_show; gc->can_sleep = true; ret = devm_gpiochip_add_data(dev, gc, chip);