From patchwork Thu Aug 15 12:11:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guillaume Stols X-Patchwork-Id: 819579 Received: from mail-wm1-f54.google.com (mail-wm1-f54.google.com [209.85.128.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63B6117C997 for ; Thu, 15 Aug 2024 12:12:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723723934; cv=none; b=TieVt4G2EtV4QKlXqzX/QaIjGVhBToLMKhxvoTwpZMpvzR6ckcmkuR6AFI3u9XV52fWk0FlwsYhgeDM9dOnR/LK412zOVfYchx86jG4ZoLneS65b9JfUI/IvgEF+dCbj0MWnfqbPkUpNsCnQi3uM74pRbwWbFGUio/siX4YVDhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723723934; c=relaxed/simple; bh=NbKx0MzTSy4AkOnvlPHkNNwV65/pkwG9IF0PJXDZUNw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rhCOZ6aOJANZhVys2689D+nEPir7fN0MrMuKyR+1p9kWfgaG8QP4VjCgZAOntA998VzpKr3hodOfsIlXWSfuxJH/yrLS9ihEsXN5zDQZpr3aI6KQAfgALlmt37c5WZNTwI8ZeAdWADXvTdvxkSF3sYVMxf+mo70CUVtylEcpT94= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=o/wKZo/t; arc=none smtp.client-ip=209.85.128.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="o/wKZo/t" Received: by mail-wm1-f54.google.com with SMTP id 5b1f17b1804b1-4280ca0791bso5661855e9.1 for ; Thu, 15 Aug 2024 05:12:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1723723928; x=1724328728; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Nlruai3BQqsm2YC4dPuHFKVGpCYgCvlc+hshYkB6H2k=; b=o/wKZo/tDnKqm0doODysO8m8dYXNXqCSMbezw+IhBudRcpzNE3+m6W3OnhxG3BW9b2 4iIZ7CjifrOGx+AWR3vXAP58Le2OAMhaEGv4tMQWJ76R++erQz1Qw6tNkxbEyZv9LWbI Ss0uP57a0UQwoM847ZAt3OcnrFzewDypuhEvzTKMWJZTkiXTLuVQLYV0AdQ22pYQEdOD Cf8Odsr/SRGlaGL/ZU5z/EAVXl/sU9bvkNPkMVmMyHulUVT8zCzKUiot2eSXXx68QTcu SxbJv9fXHdWjznC/h2JjdLvr55GDpC5bPw0v5LtPDX54YtogaVnA4Tu5kw2Vnvc4T+2O MS/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723723928; x=1724328728; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Nlruai3BQqsm2YC4dPuHFKVGpCYgCvlc+hshYkB6H2k=; b=U/9LHAgREPlKATUJnzayvQ6yWDPdR3skf0u95B2O9Dv/xtwkzwr/jauVSq196Xg2TW rde+UjCDAfgIbqWKDoEyC8oblIKUOfbjgTlDJXzFQbheBVEBiB1MkxGpWgeXE+CGATIC o9xeF9N15a0TF2/vH8U5HvVL5fXvAKPVOMEJBFCsSC9VbI/QIAqfkMiROEYOqkswMtgR 6sm7GET60iFm6rUeyUOcsnAnw8AmGdB0t/s+1wKL8qslqHUIunUxiH9uFsCHTDsjcNZN WoVW6xIJkRzpVYJbQzK0Z579RJUFPYMNulEbZ47LXC0j5LwM/kVWT5WeAa0k0cEyCccc qLfw== X-Forwarded-Encrypted: i=1; AJvYcCWnRfEtno1F2k3SzwMmfzkkAoPxXNtR/EiKZk1dCpl+KeOle/JpagS5C9ctyPcTTcXnfSYRaFJuNcBZuIc6lHQHai2lsWLIE7ARbNg= X-Gm-Message-State: AOJu0Yz2UUuSeOa0bThppQMYGcPPRtI5kFyEP/ngp1XspO04gnibAf3t GNjN7AO7mIVQWMUjHblrv7+TVtP2a1a12H9DjHbM7vh2/9aI5AyY30WM0lliOt0= X-Google-Smtp-Source: AGHT+IFqE0M2OmpEvxD4duj5kGOQWRtd+obMKR2lPW9I+CeIS+oRNhsQvPM4dCQIxcqphRcbR+qxkQ== X-Received: by 2002:a5d:59a5:0:b0:371:728e:d000 with SMTP id ffacd0b85a97d-3717775c9b2mr4340274f8f.1.1723723927819; Thu, 15 Aug 2024 05:12:07 -0700 (PDT) Received: from [127.0.1.1] (frhb82016ds.ikexpress.com. [185.246.87.17]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37189897926sm1365082f8f.87.2024.08.15.05.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 05:12:07 -0700 (PDT) From: Guillaume Stols Date: Thu, 15 Aug 2024 12:11:59 +0000 Subject: [PATCH 5/8] platform: add platform_get_device_match_data() helper Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240815-ad7606_add_iio_backend_support-v1-5-cea3e11b1aa4@baylibre.com> References: <20240815-ad7606_add_iio_backend_support-v1-0-cea3e11b1aa4@baylibre.com> In-Reply-To: <20240815-ad7606_add_iio_backend_support-v1-0-cea3e11b1aa4@baylibre.com> To: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , "Rafael J. Wysocki" , Jonathan Corbet Cc: linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Hennerich , linux-fbdev@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, Guillaume Stols , 20240705211452.1157967-2-u.kleine-koenig@baylibre.com, 20240712171821.1470833-2-u.kleine-koenig@baylibre.com, cover.1721040875.git.u.kleine-koenig@baylibre.com, aardelean@baylibre.com X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1723723923; l=1781; i=gstols@baylibre.com; s=20240417; h=from:subject:message-id; bh=NbKx0MzTSy4AkOnvlPHkNNwV65/pkwG9IF0PJXDZUNw=; b=VOYJGuD/1ccizW8foihyuYIcvcsufWDfHQhMJgly8oXiPmQELygHZcqqg/NPsa767PekcfJOM vx/cis54SwFDlOLGtkc07Yo/YSNxVhQeNHA7o9alToZqiRWmpOqxr9/ X-Developer-Key: i=gstols@baylibre.com; a=ed25519; pk=XvMm5WHuV67sGYOJZqIYzXndbaJOlNd8Q6li6vnb4Cs= Inspired from spi_get_device_match_data() helper: if OF or ACPI driver data is available, platform_get_device_id will return NULL because platform_match_id is not called, and pdev->id_entry is never populated. This helper function checks if match data is available, and otherwise returns the ID table data. Signed-off-by: Guillaume Stols --- drivers/base/platform.c | 12 ++++++++++++ include/linux/platform_device.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 4c3ee6521ba5..26e9a026eb05 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -1090,6 +1090,18 @@ static const struct platform_device_id *platform_match_id( return NULL; } +const void *platform_get_device_match_data(const struct platform_device *pdev) +{ + const struct platform_device_id *match; + + match = device_get_match_data(&pdev->dev); + if (match) + return match; + + return (const void *)platform_get_device_id(pdev)->driver_data; +} +EXPORT_SYMBOL_GPL(platform_get_device_match_data); + #ifdef CONFIG_PM_SLEEP static int platform_legacy_suspend(struct device *dev, pm_message_t mesg) diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index d422db6eec63..e2cc09ecc447 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -45,6 +45,7 @@ struct platform_device { }; #define platform_get_device_id(pdev) ((pdev)->id_entry) +extern const void *platform_get_device_match_data(const struct platform_device *pdev); #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type) #define to_platform_device(x) container_of((x), struct platform_device, dev)