From patchwork Mon Apr 15 09:41:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 789120 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E2BAD3EA96 for ; Mon, 15 Apr 2024 09:41:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713174116; cv=none; b=uiO26hYHmvTdGI7QxWjefiJqmLeedFPkRCsEtJwzki83FXlOXUa1Dsrb4XSq4IWockqnpQMe5AK+t9AOQO76imf0Ulze1KaVSLD8yF2Z5CrHgXApmL2MLW09GEj140u6fNeZnLYUuIx25TAr3WWJXoVNF3qgPZoGYuWvIMDOlrM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713174116; c=relaxed/simple; bh=15PpbWBgrXUsaMQuKnvvR4wdLsN7XoiqT2cnrYYAv/g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AsAOvZc4rXUP3FFz7O68EGZciLRA5rKnz5vID7h4sWLbH0ApmAV2tG4HjKF+NSvSqpJeMhK35ZkqZ1tKoRSkX8+IvhBpoGtGb1Abs/hhRdOFYB8ac8Lj7ROyZH2f4uRyI/d8EWCEVSk38yA1RJ5p3uUAFrVGpvSw93gRB2cYzRY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Yu3tsB9n; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Yu3tsB9n" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713174113; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uJCp6rrQC844l61YbZjijrtQd4N9DxhtZyWzpwOw8WU=; b=Yu3tsB9nT6iBOUXR19Zj7pBCzV7nSeFIJ/Ky+bkVTYt6DSAAfT8LUeH3937GpeuR3NtTOR vwSInffZBRRIYFY6C8lEMB6EifjCMKMoOawuGmSLW1HEyzFIiXJ/PVuVFlaEMv64WuEWKw rSt1qWqiOnh529h5SL9B0nvAFFBZhXg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-402-UaFasqNdM7y5YZtwwYv7jA-1; Mon, 15 Apr 2024 05:41:50 -0400 X-MC-Unique: UaFasqNdM7y5YZtwwYv7jA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 11DAF830E75; Mon, 15 Apr 2024 09:41:50 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.195.17]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1BD3C492BC7; Mon, 15 Apr 2024 09:41:49 +0000 (UTC) From: Hans de Goede To: Sakari Ailus , Rui Miguel Silva Cc: Hans de Goede , Mauro Carvalho Chehab , Kate Hsuan , Kieran Bingham , linux-media@vger.kernel.org Subject: [PATCH resend 3/4] media: hi556: Add support for external clock Date: Mon, 15 Apr 2024 11:41:32 +0200 Message-ID: <20240415094133.210580-4-hdegoede@redhat.com> In-Reply-To: <20240415094133.210580-1-hdegoede@redhat.com> References: <20240415094133.210580-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 On some ACPI platforms, such as Chromebooks the ACPI methods to change the power-state (_PS0 and _PS3) fully take care of powering on/off the sensor. On other ACPI platforms, such as e.g. various HP models with IPU6 + hi556 sensor, the sensor driver must control the sensor's clock itself. Add support for having the driver control an optional clock. Signed-off-by: Hans de Goede --- drivers/media/i2c/hi556.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/media/i2c/hi556.c b/drivers/media/i2c/hi556.c index f5a39b83598b..b783e0f56687 100644 --- a/drivers/media/i2c/hi556.c +++ b/drivers/media/i2c/hi556.c @@ -3,6 +3,7 @@ #include #include +#include #include #include #include @@ -636,6 +637,7 @@ struct hi556 { /* GPIOs, clocks, etc. */ struct gpio_desc *reset_gpio; + struct clk *clk; /* Current mode */ const struct hi556_mode *cur_mode; @@ -1286,6 +1288,7 @@ static int hi556_suspend(struct device *dev) struct hi556 *hi556 = to_hi556(sd); gpiod_set_value_cansleep(hi556->reset_gpio, 1); + clk_disable_unprepare(hi556->clk); return 0; } @@ -1293,6 +1296,11 @@ static int hi556_resume(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct hi556 *hi556 = to_hi556(sd); + int ret; + + ret = clk_prepare_enable(hi556->clk); + if (ret) + return ret; gpiod_set_value_cansleep(hi556->reset_gpio, 0); usleep_range(5000, 5500); @@ -1324,6 +1332,11 @@ static int hi556_probe(struct i2c_client *client) return dev_err_probe(&client->dev, PTR_ERR(hi556->reset_gpio), "failed to get reset GPIO\n"); + hi556->clk = devm_clk_get_optional(&client->dev, "clk"); + if (IS_ERR(hi556->clk)) + return dev_err_probe(&client->dev, PTR_ERR(hi556->clk), + "failed to get clock\n"); + full_power = acpi_dev_state_d0(&client->dev); if (full_power) { /* Ensure non ACPI managed resources are enabled */