From patchwork Fri Jan 27 20:37:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13119394 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9FCA6C38142 for ; Fri, 27 Jan 2023 20:38:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231610AbjA0Uic (ORCPT ); Fri, 27 Jan 2023 15:38:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229469AbjA0Uib (ORCPT ); Fri, 27 Jan 2023 15:38:31 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C45337B7B1 for ; Fri, 27 Jan 2023 12:37:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674851865; 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=FvC+mJVTxeLB/xxKqNlLzusxS+FDnbgqyFtuEzpY61Y=; b=XKLA/SmBAklwWNt5ht/b4LCiZMe+o3bepVuvoe9O3/Cpiu2AeoKTf15ljB9zLzumD4yNY9 OF20rPPb4GCep1Wu64dMsYr5nZrEM+wywa71mWhJvHEU0jBqII+tXcwDiPHuOtsor93QAk rh8hIJk3cIShyd2FBH9tuChjaW+V5MI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-441-Cm0Wo-fJPVejEqV3kXS4wA-1; Fri, 27 Jan 2023 15:37:41 -0500 X-MC-Unique: Cm0Wo-fJPVejEqV3kXS4wA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6626C88B776; Fri, 27 Jan 2023 20:37:39 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id DF3F0492C14; Fri, 27 Jan 2023 20:37:35 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 1/5] media: v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present Date: Fri, 27 Jan 2023 21:37:25 +0100 Message-Id: <20230127203729.10205-2-hdegoede@redhat.com> In-Reply-To: <20230127203729.10205-1-hdegoede@redhat.com> References: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Make v4l2_async_register_subdev_sensor() try to get a privacy LED associated with the sensor and extend the call_s_stream() wrapper to enable/disable the privacy LED if found. This makes the core handle privacy LED control, rather then having to duplicate this code in all the sensor drivers. Suggested-by: Sakari Ailus Acked-by: Linus Walleij Signed-off-by: Hans de Goede Acked-by: Sakari Ailus Reviewed-by: Sakari Ailus --- Changes in v6: - Add v4l2_subdev_privacy_led_get()/_put() helpers - At least the _put helper is necessary for cleanup on errors later on in v4l2_async_register_subdev_sensor() - This puts all the LED related coded into a single file (v4l2-subdev.c) removing the need to build the async + fwnode code into videodev.ko, so that patch is dropped - Move the (non-error-exit) cleanup from v4l2_subdev_cleanup() to v4l2_async_unregister_subdev() Changes in v4 (requested by Laurent Pinchart): - Move the led_get() call to v4l2_async_register_subdev_sensor() and make errors other then -ENOENT fail the register() call. - Move the led_disable_sysfs() call to be done at led_get() time, instead of only disabling the sysfs interface when the sensor is streaming. --- drivers/media/v4l2-core/v4l2-async.c | 4 ++ drivers/media/v4l2-core/v4l2-fwnode.c | 7 ++++ drivers/media/v4l2-core/v4l2-subdev-priv.h | 14 +++++++ drivers/media/v4l2-core/v4l2-subdev.c | 44 ++++++++++++++++++++++ include/media/v4l2-subdev.h | 3 ++ 5 files changed, 72 insertions(+) create mode 100644 drivers/media/v4l2-core/v4l2-subdev-priv.h diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 2f1b718a9189..d7e9ffc7aa23 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -24,6 +24,8 @@ #include #include +#include "v4l2-subdev-priv.h" + static int v4l2_async_nf_call_bound(struct v4l2_async_notifier *n, struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd) @@ -822,6 +824,8 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd) if (!sd->async_list.next) return; + v4l2_subdev_put_privacy_led(sd); + mutex_lock(&list_lock); __v4l2_async_nf_unregister(sd->subdev_notifier); diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 3d9533c1b202..049c2f2001ea 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -28,6 +28,8 @@ #include #include +#include "v4l2-subdev-priv.h" + static const struct v4l2_fwnode_bus_conv { enum v4l2_fwnode_bus_type fwnode_bus_type; enum v4l2_mbus_type mbus_type; @@ -1302,6 +1304,10 @@ int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd) v4l2_async_nf_init(notifier); + ret = v4l2_subdev_get_privacy_led(sd); + if (ret < 0) + goto out_cleanup; + ret = v4l2_async_nf_parse_fwnode_sensor(sd->dev, notifier); if (ret < 0) goto out_cleanup; @@ -1322,6 +1328,7 @@ int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd) v4l2_async_nf_unregister(notifier); out_cleanup: + v4l2_subdev_put_privacy_led(sd); v4l2_async_nf_cleanup(notifier); kfree(notifier); diff --git a/drivers/media/v4l2-core/v4l2-subdev-priv.h b/drivers/media/v4l2-core/v4l2-subdev-priv.h new file mode 100644 index 000000000000..52391d6d8ab7 --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-subdev-priv.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * V4L2 sub-device pivate header. + * + * Copyright (C) 2023 Hans de Goede + */ + +#ifndef _V4L2_SUBDEV_PRIV_H_ +#define _V4L2_SUBDEV_PRIV_H_ + +int v4l2_subdev_get_privacy_led(struct v4l2_subdev *sd); +void v4l2_subdev_put_privacy_led(struct v4l2_subdev *sd); + +#endif diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 4988a25bd8f4..9fd183628285 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -9,6 +9,7 @@ */ #include +#include #include #include #include @@ -23,6 +24,8 @@ #include #include +#include "v4l2-subdev-priv.h" + #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) { @@ -322,6 +325,14 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable) { int ret; +#if IS_REACHABLE(CONFIG_LEDS_CLASS) + if (!IS_ERR_OR_NULL(sd->privacy_led)) { + if (enable) + led_set_brightness(sd->privacy_led, sd->privacy_led->max_brightness); + else + led_set_brightness(sd->privacy_led, 0); + } +#endif ret = sd->ops->video->s_stream(sd, enable); if (!enable && ret < 0) { @@ -1090,6 +1101,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) sd->grp_id = 0; sd->dev_priv = NULL; sd->host_priv = NULL; + sd->privacy_led = NULL; #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV; @@ -1105,3 +1117,35 @@ void v4l2_subdev_notify_event(struct v4l2_subdev *sd, v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev); } EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event); + +int v4l2_subdev_get_privacy_led(struct v4l2_subdev *sd) +{ +#if IS_REACHABLE(CONFIG_LEDS_CLASS) + sd->privacy_led = led_get(sd->dev, "privacy-led"); + if (IS_ERR(sd->privacy_led) && PTR_ERR(sd->privacy_led) != -ENOENT) + return dev_err_probe(sd->dev, PTR_ERR(sd->privacy_led), "getting privacy LED\n"); + + if (!IS_ERR_OR_NULL(sd->privacy_led)) { + mutex_lock(&sd->privacy_led->led_access); + led_sysfs_disable(sd->privacy_led); + led_trigger_remove(sd->privacy_led); + led_set_brightness(sd->privacy_led, 0); + mutex_unlock(&sd->privacy_led->led_access); + } +#endif + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_subdev_get_privacy_led); + +void v4l2_subdev_put_privacy_led(struct v4l2_subdev *sd) +{ +#if IS_REACHABLE(CONFIG_LEDS_CLASS) + if (!IS_ERR_OR_NULL(sd->privacy_led)) { + mutex_lock(&sd->privacy_led->led_access); + led_sysfs_enable(sd->privacy_led); + mutex_unlock(&sd->privacy_led->led_access); + led_put(sd->privacy_led); + } +#endif +} +EXPORT_SYMBOL_GPL(v4l2_subdev_put_privacy_led); diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index b15fa9930f30..0547313f98cc 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -38,6 +38,7 @@ struct v4l2_subdev; struct v4l2_subdev_fh; struct tuner_setup; struct v4l2_mbus_frame_desc; +struct led_classdev; /** * struct v4l2_decode_vbi_line - used to decode_vbi_line @@ -982,6 +983,8 @@ struct v4l2_subdev { * appropriate functions. */ + struct led_classdev *privacy_led; + /* * TODO: active_state should most likely be changed from a pointer to an * embedded field. For the time being it's kept as a pointer to more From patchwork Fri Jan 27 20:37:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13119395 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0A8BC61DA7 for ; Fri, 27 Jan 2023 20:39:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231908AbjA0UjK (ORCPT ); Fri, 27 Jan 2023 15:39:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231783AbjA0UjJ (ORCPT ); Fri, 27 Jan 2023 15:39:09 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2DB9199C3 for ; Fri, 27 Jan 2023 12:37:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674851870; 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=xT+sMb53YKOY8Wu0RJ8DpPc3Z6j34v11O/P+urbWZ3o=; b=cenhv1d2mXRAXMxwuGKdlbeyoTMN4VEZY0R6TN7cYBF7SPULEEc9vtMSjjSttFeRQbNh+O LPV3eDl5DWnncDxqdH4Bmh4XYalNY6af8vIBnfhmwqMHAYYP9XJZF/2057MxLBVvc0QeKe TnuzNLM+sjkS19bxIkXL0hIqjzFrciU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-90-c0UUVRjtM-G4j9FEx979tg-1; Fri, 27 Jan 2023 15:37:43 -0500 X-MC-Unique: c0UUVRjtM-G4j9FEx979tg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4A82688B783; Fri, 27 Jan 2023 20:37:43 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id C5D1B492C14; Fri, 27 Jan 2023 20:37:39 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 2/5] platform/x86: int3472/discrete: Refactor GPIO to sensor mapping Date: Fri, 27 Jan 2023 21:37:26 +0100 Message-Id: <20230127203729.10205-3-hdegoede@redhat.com> In-Reply-To: <20230127203729.10205-1-hdegoede@redhat.com> References: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add a helper function to map the type returned by the _DSM method to a function name + the default polarity for that function. And fold the INT3472_GPIO_TYPE_RESET and INT3472_GPIO_TYPE_POWERDOWN cases into a single generic case. This is a preparation patch for further GPIO mapping changes. Signed-off-by: Hans de Goede --- Changes in v3: - Add break to default case Changes in v2: - Make the helper function doing the type -> function mapping, also return a default polarity for the function. --- drivers/platform/x86/intel/int3472/discrete.c | 45 +++++++++++++++---- 1 file changed, 36 insertions(+), 9 deletions(-) diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c index c42c3faa2c32..708d51f9b41d 100644 --- a/drivers/platform/x86/intel/int3472/discrete.c +++ b/drivers/platform/x86/intel/int3472/discrete.c @@ -188,6 +188,36 @@ static int skl_int3472_map_gpio_to_clk(struct int3472_discrete_device *int3472, return 0; } +static void int3472_get_func_and_polarity(u8 type, const char **func, u32 *polarity) +{ + switch (type) { + case INT3472_GPIO_TYPE_RESET: + *func = "reset"; + *polarity = GPIO_ACTIVE_LOW; + break; + case INT3472_GPIO_TYPE_POWERDOWN: + *func = "powerdown"; + *polarity = GPIO_ACTIVE_LOW; + break; + case INT3472_GPIO_TYPE_CLK_ENABLE: + *func = "clk-enable"; + *polarity = GPIO_ACTIVE_HIGH; + break; + case INT3472_GPIO_TYPE_PRIVACY_LED: + *func = "privacy-led"; + *polarity = GPIO_ACTIVE_HIGH; + break; + case INT3472_GPIO_TYPE_POWER_ENABLE: + *func = "power-enable"; + *polarity = GPIO_ACTIVE_HIGH; + break; + default: + *func = "unknown"; + *polarity = GPIO_ACTIVE_HIGH; + break; + } +} + /** * skl_int3472_handle_gpio_resources: Map PMIC resources to consuming sensor * @ares: A pointer to a &struct acpi_resource @@ -227,6 +257,8 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, struct acpi_resource_gpio *agpio; union acpi_object *obj; const char *err_msg; + const char *func; + u32 polarity; int ret; u8 type; @@ -250,19 +282,14 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, type = obj->integer.value & 0xff; + int3472_get_func_and_polarity(type, &func, &polarity); + switch (type) { case INT3472_GPIO_TYPE_RESET: - ret = skl_int3472_map_gpio_to_sensor(int3472, agpio, "reset", - GPIO_ACTIVE_LOW); - if (ret) - err_msg = "Failed to map reset pin to sensor\n"; - - break; case INT3472_GPIO_TYPE_POWERDOWN: - ret = skl_int3472_map_gpio_to_sensor(int3472, agpio, "powerdown", - GPIO_ACTIVE_LOW); + ret = skl_int3472_map_gpio_to_sensor(int3472, agpio, func, polarity); if (ret) - err_msg = "Failed to map powerdown pin to sensor\n"; + err_msg = "Failed to map GPIO pin to sensor\n"; break; case INT3472_GPIO_TYPE_CLK_ENABLE: From patchwork Fri Jan 27 20:37:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13119398 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EFE8C61DA4 for ; Fri, 27 Jan 2023 20:39:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231945AbjA0UjN (ORCPT ); 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Fri, 27 Jan 2023 15:37:47 -0500 X-MC-Unique: fXFCVH-TOuaRQEN9-Vt0Vg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5CE8B2801E47; Fri, 27 Jan 2023 20:37:46 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id AAC02492C18; Fri, 27 Jan 2023 20:37:43 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 3/5] platform/x86: int3472/discrete: Create a LED class device for the privacy LED Date: Fri, 27 Jan 2023 21:37:27 +0100 Message-Id: <20230127203729.10205-4-hdegoede@redhat.com> In-Reply-To: <20230127203729.10205-1-hdegoede@redhat.com> References: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On some systems, e.g. the Lenovo ThinkPad X1 Yoga gen 7 and the ThinkPad X1 Nano gen 2 there is no clock-enable pin, triggering the: "No clk GPIO. The privacy LED won't work" warning and causing the privacy LED to not work. Fix this by modeling the privacy LED as a LED class device rather then integrating it with the registered clock. Note this relies on media subsys changes to actually turn the LED on/off when the sensor's v4l2_subdev's s_stream() operand gets called. Signed-off-by: Hans de Goede --- Changes in v4: - Make struct led_classdev the first member of the pled struct - Use strchr to replace the : with _ in the acpi_dev_name() --- drivers/platform/x86/intel/int3472/Makefile | 2 +- .../x86/intel/int3472/clk_and_regulator.c | 3 - drivers/platform/x86/intel/int3472/common.h | 15 +++- drivers/platform/x86/intel/int3472/discrete.c | 58 ++++----------- drivers/platform/x86/intel/int3472/led.c | 74 +++++++++++++++++++ 5 files changed, 105 insertions(+), 47 deletions(-) create mode 100644 drivers/platform/x86/intel/int3472/led.c diff --git a/drivers/platform/x86/intel/int3472/Makefile b/drivers/platform/x86/intel/int3472/Makefile index cfec7784c5c9..9f16cb514397 100644 --- a/drivers/platform/x86/intel/int3472/Makefile +++ b/drivers/platform/x86/intel/int3472/Makefile @@ -1,4 +1,4 @@ obj-$(CONFIG_INTEL_SKL_INT3472) += intel_skl_int3472_discrete.o \ intel_skl_int3472_tps68470.o -intel_skl_int3472_discrete-y := discrete.o clk_and_regulator.o common.o +intel_skl_int3472_discrete-y := discrete.o clk_and_regulator.o led.o common.o intel_skl_int3472_tps68470-y := tps68470.o tps68470_board_data.o common.o diff --git a/drivers/platform/x86/intel/int3472/clk_and_regulator.c b/drivers/platform/x86/intel/int3472/clk_and_regulator.c index 74dc2cff799e..e3b597d93388 100644 --- a/drivers/platform/x86/intel/int3472/clk_and_regulator.c +++ b/drivers/platform/x86/intel/int3472/clk_and_regulator.c @@ -23,8 +23,6 @@ static int skl_int3472_clk_prepare(struct clk_hw *hw) struct int3472_gpio_clock *clk = to_int3472_clk(hw); gpiod_set_value_cansleep(clk->ena_gpio, 1); - gpiod_set_value_cansleep(clk->led_gpio, 1); - return 0; } @@ -33,7 +31,6 @@ static void skl_int3472_clk_unprepare(struct clk_hw *hw) struct int3472_gpio_clock *clk = to_int3472_clk(hw); gpiod_set_value_cansleep(clk->ena_gpio, 0); - gpiod_set_value_cansleep(clk->led_gpio, 0); } static int skl_int3472_clk_enable(struct clk_hw *hw) diff --git a/drivers/platform/x86/intel/int3472/common.h b/drivers/platform/x86/intel/int3472/common.h index 53270d19c73a..82dc37e08882 100644 --- a/drivers/platform/x86/intel/int3472/common.h +++ b/drivers/platform/x86/intel/int3472/common.h @@ -6,6 +6,7 @@ #include #include +#include #include #include #include @@ -28,6 +29,8 @@ #define GPIO_REGULATOR_NAME_LENGTH 21 #define GPIO_REGULATOR_SUPPLY_NAME_LENGTH 9 +#define INT3472_LED_MAX_NAME_LEN 32 + #define CIO2_SENSOR_SSDB_MCLKSPEED_OFFSET 86 #define INT3472_REGULATOR(_name, _supply, _ops) \ @@ -96,10 +99,16 @@ struct int3472_discrete_device { struct clk_hw clk_hw; struct clk_lookup *cl; struct gpio_desc *ena_gpio; - struct gpio_desc *led_gpio; u32 frequency; } clock; + struct int3472_pled { + struct led_classdev classdev; + struct led_lookup_data lookup; + char name[INT3472_LED_MAX_NAME_LEN]; + struct gpio_desc *gpio; + } pled; + unsigned int ngpios; /* how many GPIOs have we seen */ unsigned int n_sensor_gpios; /* how many have we mapped to sensor */ struct gpiod_lookup_table gpios; @@ -119,4 +128,8 @@ int skl_int3472_register_regulator(struct int3472_discrete_device *int3472, struct acpi_resource_gpio *agpio); void skl_int3472_unregister_regulator(struct int3472_discrete_device *int3472); +int skl_int3472_register_pled(struct int3472_discrete_device *int3472, + struct acpi_resource_gpio *agpio, u32 polarity); +void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472); + #endif diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c index 708d51f9b41d..38b1372e0745 100644 --- a/drivers/platform/x86/intel/int3472/discrete.c +++ b/drivers/platform/x86/intel/int3472/discrete.c @@ -155,37 +155,21 @@ static int skl_int3472_map_gpio_to_sensor(struct int3472_discrete_device *int347 } static int skl_int3472_map_gpio_to_clk(struct int3472_discrete_device *int3472, - struct acpi_resource_gpio *agpio, u8 type) + struct acpi_resource_gpio *agpio) { char *path = agpio->resource_source.string_ptr; u16 pin = agpio->pin_table[0]; struct gpio_desc *gpio; - switch (type) { - case INT3472_GPIO_TYPE_CLK_ENABLE: - gpio = acpi_get_and_request_gpiod(path, pin, "int3472,clk-enable"); - if (IS_ERR(gpio)) - return (PTR_ERR(gpio)); - - int3472->clock.ena_gpio = gpio; - /* Ensure the pin is in output mode and non-active state */ - gpiod_direction_output(int3472->clock.ena_gpio, 0); - break; - case INT3472_GPIO_TYPE_PRIVACY_LED: - gpio = acpi_get_and_request_gpiod(path, pin, "int3472,privacy-led"); - if (IS_ERR(gpio)) - return (PTR_ERR(gpio)); + gpio = acpi_get_and_request_gpiod(path, pin, "int3472,clk-enable"); + if (IS_ERR(gpio)) + return (PTR_ERR(gpio)); - int3472->clock.led_gpio = gpio; - /* Ensure the pin is in output mode and non-active state */ - gpiod_direction_output(int3472->clock.led_gpio, 0); - break; - default: - dev_err(int3472->dev, "Invalid GPIO type 0x%02x for clock\n", type); - break; - } + int3472->clock.ena_gpio = gpio; + /* Ensure the pin is in output mode and non-active state */ + gpiod_direction_output(int3472->clock.ena_gpio, 0); - return 0; + return skl_int3472_register_clock(int3472); } static void int3472_get_func_and_polarity(u8 type, const char **func, u32 *polarity) @@ -293,11 +277,16 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, break; case INT3472_GPIO_TYPE_CLK_ENABLE: - case INT3472_GPIO_TYPE_PRIVACY_LED: - ret = skl_int3472_map_gpio_to_clk(int3472, agpio, type); + ret = skl_int3472_map_gpio_to_clk(int3472, agpio); if (ret) err_msg = "Failed to map GPIO to clock\n"; + break; + case INT3472_GPIO_TYPE_PRIVACY_LED: + ret = skl_int3472_register_pled(int3472, agpio, polarity); + if (ret) + err_msg = "Failed to register LED\n"; + break; case INT3472_GPIO_TYPE_POWER_ENABLE: ret = skl_int3472_register_regulator(int3472, agpio); @@ -341,21 +330,6 @@ static int skl_int3472_parse_crs(struct int3472_discrete_device *int3472) acpi_dev_free_resource_list(&resource_list); - /* - * If we find no clock enable GPIO pin then the privacy LED won't work. - * We've never seen that situation, but it's possible. Warn the user so - * it's clear what's happened. - */ - if (int3472->clock.ena_gpio) { - ret = skl_int3472_register_clock(int3472); - if (ret) - return ret; - } else { - if (int3472->clock.led_gpio) - dev_warn(int3472->dev, - "No clk GPIO. The privacy LED won't work\n"); - } - int3472->gpios.dev_id = int3472->sensor_name; gpiod_add_lookup_table(&int3472->gpios); @@ -372,8 +346,8 @@ static int skl_int3472_discrete_remove(struct platform_device *pdev) skl_int3472_unregister_clock(int3472); gpiod_put(int3472->clock.ena_gpio); - gpiod_put(int3472->clock.led_gpio); + skl_int3472_unregister_pled(int3472); skl_int3472_unregister_regulator(int3472); return 0; diff --git a/drivers/platform/x86/intel/int3472/led.c b/drivers/platform/x86/intel/int3472/led.c new file mode 100644 index 000000000000..251c6524458e --- /dev/null +++ b/drivers/platform/x86/intel/int3472/led.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Author: Hans de Goede */ + +#include +#include +#include +#include "common.h" + +static int int3472_pled_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct int3472_discrete_device *int3472 = + container_of(led_cdev, struct int3472_discrete_device, pled.classdev); + + gpiod_set_value_cansleep(int3472->pled.gpio, brightness); + return 0; +} + +int skl_int3472_register_pled(struct int3472_discrete_device *int3472, + struct acpi_resource_gpio *agpio, u32 polarity) +{ + char *p, *path = agpio->resource_source.string_ptr; + int ret; + + if (int3472->pled.classdev.dev) + return -EBUSY; + + int3472->pled.gpio = acpi_get_and_request_gpiod(path, agpio->pin_table[0], + "int3472,privacy-led"); + if (IS_ERR(int3472->pled.gpio)) + return dev_err_probe(int3472->dev, PTR_ERR(int3472->pled.gpio), + "getting privacy LED GPIO\n"); + + if (polarity == GPIO_ACTIVE_LOW) + gpiod_toggle_active_low(int3472->pled.gpio); + + /* Ensure the pin is in output mode and non-active state */ + gpiod_direction_output(int3472->pled.gpio, 0); + + /* Generate the name, replacing the ':' in the ACPI devname with '_' */ + snprintf(int3472->pled.name, sizeof(int3472->pled.name), + "%s::privacy_led", acpi_dev_name(int3472->sensor)); + p = strchr(int3472->pled.name, ':'); + *p = '_'; + + int3472->pled.classdev.name = int3472->pled.name; + int3472->pled.classdev.max_brightness = 1; + int3472->pled.classdev.brightness_set_blocking = int3472_pled_set; + + ret = led_classdev_register(int3472->dev, &int3472->pled.classdev); + if (ret) + goto err_free_gpio; + + int3472->pled.lookup.provider = int3472->pled.name; + int3472->pled.lookup.dev_id = int3472->sensor_name; + int3472->pled.lookup.con_id = "privacy-led"; + led_add_lookup(&int3472->pled.lookup); + + return 0; + +err_free_gpio: + gpiod_put(int3472->pled.gpio); + return ret; +} + +void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472) +{ + if (IS_ERR_OR_NULL(int3472->pled.classdev.dev)) + return; + + led_remove_lookup(&int3472->pled.lookup); + led_classdev_unregister(&int3472->pled.classdev); + gpiod_put(int3472->pled.gpio); +} From patchwork Fri Jan 27 20:37:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13119397 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B7AEC636CC for ; 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Fri, 27 Jan 2023 15:37:50 -0500 X-MC-Unique: bX2zL63KMzehiiJU6bK1Gg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3B3953806703; Fri, 27 Jan 2023 20:37:49 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id BBD62492C14; Fri, 27 Jan 2023 20:37:46 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 4/5] platform/x86: int3472/discrete: Move GPIO request to skl_int3472_register_clock() Date: Fri, 27 Jan 2023 21:37:28 +0100 Message-Id: <20230127203729.10205-5-hdegoede@redhat.com> In-Reply-To: <20230127203729.10205-1-hdegoede@redhat.com> References: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Move the requesting of the clk-enable GPIO to skl_int3472_register_clock() (and move the gpiod_put to unregister). This mirrors the GPIO handling in skl_int3472_register_regulator() and allows removing skl_int3472_map_gpio_to_clk() from discrete.c. Signed-off-by: Hans de Goede --- .../x86/intel/int3472/clk_and_regulator.c | 28 +++++++++++++++-- drivers/platform/x86/intel/int3472/common.h | 3 +- drivers/platform/x86/intel/int3472/discrete.c | 30 ++----------------- 3 files changed, 30 insertions(+), 31 deletions(-) diff --git a/drivers/platform/x86/intel/int3472/clk_and_regulator.c b/drivers/platform/x86/intel/int3472/clk_and_regulator.c index e3b597d93388..626e5e86f4e0 100644 --- a/drivers/platform/x86/intel/int3472/clk_and_regulator.c +++ b/drivers/platform/x86/intel/int3472/clk_and_regulator.c @@ -86,18 +86,34 @@ static const struct clk_ops skl_int3472_clock_ops = { .recalc_rate = skl_int3472_clk_recalc_rate, }; -int skl_int3472_register_clock(struct int3472_discrete_device *int3472) +int skl_int3472_register_clock(struct int3472_discrete_device *int3472, + struct acpi_resource_gpio *agpio) { + char *path = agpio->resource_source.string_ptr; struct clk_init_data init = { .ops = &skl_int3472_clock_ops, .flags = CLK_GET_RATE_NOCACHE, }; int ret; + if (int3472->clock.cl) + return -EBUSY; + + int3472->clock.ena_gpio = acpi_get_and_request_gpiod(path, agpio->pin_table[0], + "int3472,clk-enable"); + if (IS_ERR(int3472->clock.ena_gpio)) + return dev_err_probe(int3472->dev, PTR_ERR(int3472->clock.ena_gpio), + "getting clk-enable GPIO\n"); + + /* Ensure the pin is in output mode and non-active state */ + gpiod_direction_output(int3472->clock.ena_gpio, 0); + init.name = kasprintf(GFP_KERNEL, "%s-clk", acpi_dev_name(int3472->adev)); - if (!init.name) - return -ENOMEM; + if (!init.name) { + ret = -ENOMEM; + goto out_put_gpio; + } int3472->clock.frequency = skl_int3472_get_clk_frequency(int3472); @@ -123,14 +139,20 @@ int skl_int3472_register_clock(struct int3472_discrete_device *int3472) clk_unregister(int3472->clock.clk); out_free_init_name: kfree(init.name); +out_put_gpio: + gpiod_put(int3472->clock.ena_gpio); return ret; } void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472) { + if (!int3472->clock.cl) + return; + clkdev_drop(int3472->clock.cl); clk_unregister(int3472->clock.clk); + gpiod_put(int3472->clock.ena_gpio); } int skl_int3472_register_regulator(struct int3472_discrete_device *int3472, diff --git a/drivers/platform/x86/intel/int3472/common.h b/drivers/platform/x86/intel/int3472/common.h index 82dc37e08882..0d4fa7d00b5f 100644 --- a/drivers/platform/x86/intel/int3472/common.h +++ b/drivers/platform/x86/intel/int3472/common.h @@ -121,7 +121,8 @@ int skl_int3472_get_sensor_adev_and_name(struct device *dev, struct acpi_device **sensor_adev_ret, const char **name_ret); -int skl_int3472_register_clock(struct int3472_discrete_device *int3472); +int skl_int3472_register_clock(struct int3472_discrete_device *int3472, + struct acpi_resource_gpio *agpio); void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472); int skl_int3472_register_regulator(struct int3472_discrete_device *int3472, diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c index 38b1372e0745..b7752c2b798d 100644 --- a/drivers/platform/x86/intel/int3472/discrete.c +++ b/drivers/platform/x86/intel/int3472/discrete.c @@ -2,8 +2,6 @@ /* Author: Dan Scally */ #include -#include -#include #include #include #include @@ -154,24 +152,6 @@ static int skl_int3472_map_gpio_to_sensor(struct int3472_discrete_device *int347 return 0; } -static int skl_int3472_map_gpio_to_clk(struct int3472_discrete_device *int3472, - struct acpi_resource_gpio *agpio) -{ - char *path = agpio->resource_source.string_ptr; - u16 pin = agpio->pin_table[0]; - struct gpio_desc *gpio; - - gpio = acpi_get_and_request_gpiod(path, pin, "int3472,clk-enable"); - if (IS_ERR(gpio)) - return (PTR_ERR(gpio)); - - int3472->clock.ena_gpio = gpio; - /* Ensure the pin is in output mode and non-active state */ - gpiod_direction_output(int3472->clock.ena_gpio, 0); - - return skl_int3472_register_clock(int3472); -} - static void int3472_get_func_and_polarity(u8 type, const char **func, u32 *polarity) { switch (type) { @@ -277,9 +257,9 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, break; case INT3472_GPIO_TYPE_CLK_ENABLE: - ret = skl_int3472_map_gpio_to_clk(int3472, agpio); + ret = skl_int3472_register_clock(int3472, agpio); if (ret) - err_msg = "Failed to map GPIO to clock\n"; + err_msg = "Failed to register clock\n"; break; case INT3472_GPIO_TYPE_PRIVACY_LED: @@ -342,11 +322,7 @@ static int skl_int3472_discrete_remove(struct platform_device *pdev) gpiod_remove_lookup_table(&int3472->gpios); - if (int3472->clock.cl) - skl_int3472_unregister_clock(int3472); - - gpiod_put(int3472->clock.ena_gpio); - + skl_int3472_unregister_clock(int3472); skl_int3472_unregister_pled(int3472); skl_int3472_unregister_regulator(int3472); From patchwork Fri Jan 27 20:37:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13119396 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D954EC636CB for ; Fri, 27 Jan 2023 20:39:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231810AbjA0UjL (ORCPT ); Fri, 27 Jan 2023 15:39:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231889AbjA0UjK (ORCPT ); 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Fri, 27 Jan 2023 15:37:53 -0500 X-MC-Unique: KppIYMjRPSuY3-oFrGq4_g-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3410288B77F; Fri, 27 Jan 2023 20:37:52 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8885D492C18; Fri, 27 Jan 2023 20:37:49 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 5/5] platform/x86: int3472/discrete: Get the polarity from the _DSM entry Date: Fri, 27 Jan 2023 21:37:29 +0100 Message-Id: <20230127203729.10205-6-hdegoede@redhat.com> In-Reply-To: <20230127203729.10205-1-hdegoede@redhat.com> References: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org According to: https://github.com/intel/ipu6-drivers/blob/master/patch/int3472-support-independent-clock-and-LED-gpios-5.17%2B.patch Bits 31-24 of the _DSM pin entry integer value codes the active-value, that is the actual physical signal (0 or 1) which needs to be output on the pin to turn the sensor chip on (to make it active). So if bits 31-24 are 0 for a reset pin, then the actual value of the reset pin needs to be 0 to take the chip out of reset. IOW in this case the reset signal is active-high rather then the default active-low. And if bits 31-24 are 0 for a clk-en pin then the actual value of the clk pin needs to be 0 to enable the clk. So in this case the clk-en signal is active-low rather then the default active-high. IOW if bits 31-24 are 0 for a pin, then the default polarity of the pin is inverted. Add a check for this and also propagate this new polarity to the clock registration. Signed-off-by: Hans de Goede --- .../platform/x86/intel/int3472/clk_and_regulator.c | 5 ++++- drivers/platform/x86/intel/int3472/common.h | 2 +- drivers/platform/x86/intel/int3472/discrete.c | 13 +++++++++++-- 3 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/intel/int3472/clk_and_regulator.c b/drivers/platform/x86/intel/int3472/clk_and_regulator.c index 626e5e86f4e0..1086c3d83494 100644 --- a/drivers/platform/x86/intel/int3472/clk_and_regulator.c +++ b/drivers/platform/x86/intel/int3472/clk_and_regulator.c @@ -87,7 +87,7 @@ static const struct clk_ops skl_int3472_clock_ops = { }; int skl_int3472_register_clock(struct int3472_discrete_device *int3472, - struct acpi_resource_gpio *agpio) + struct acpi_resource_gpio *agpio, u32 polarity) { char *path = agpio->resource_source.string_ptr; struct clk_init_data init = { @@ -105,6 +105,9 @@ int skl_int3472_register_clock(struct int3472_discrete_device *int3472, return dev_err_probe(int3472->dev, PTR_ERR(int3472->clock.ena_gpio), "getting clk-enable GPIO\n"); + if (polarity == GPIO_ACTIVE_LOW) + gpiod_toggle_active_low(int3472->clock.ena_gpio); + /* Ensure the pin is in output mode and non-active state */ gpiod_direction_output(int3472->clock.ena_gpio, 0); diff --git a/drivers/platform/x86/intel/int3472/common.h b/drivers/platform/x86/intel/int3472/common.h index 0d4fa7d00b5f..61688e450ce5 100644 --- a/drivers/platform/x86/intel/int3472/common.h +++ b/drivers/platform/x86/intel/int3472/common.h @@ -122,7 +122,7 @@ int skl_int3472_get_sensor_adev_and_name(struct device *dev, const char **name_ret); int skl_int3472_register_clock(struct int3472_discrete_device *int3472, - struct acpi_resource_gpio *agpio); + struct acpi_resource_gpio *agpio, u32 polarity); void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472); int skl_int3472_register_regulator(struct int3472_discrete_device *int3472, diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c index b7752c2b798d..96963e30ab6c 100644 --- a/drivers/platform/x86/intel/int3472/discrete.c +++ b/drivers/platform/x86/intel/int3472/discrete.c @@ -220,11 +220,11 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, struct int3472_discrete_device *int3472 = data; struct acpi_resource_gpio *agpio; union acpi_object *obj; + u8 active_value, type; const char *err_msg; const char *func; u32 polarity; int ret; - u8 type; if (!acpi_gpio_get_io_resource(ares, &agpio)) return 1; @@ -248,6 +248,15 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, int3472_get_func_and_polarity(type, &func, &polarity); + /* If bits 31-24 of the _DSM entry are all 0 then the signal is inverted */ + active_value = obj->integer.value >> 24; + if (!active_value) + polarity ^= GPIO_ACTIVE_LOW; + + dev_dbg(int3472->dev, "%s %s pin %d active-%s\n", func, + agpio->resource_source.string_ptr, agpio->pin_table[0], + (polarity == GPIO_ACTIVE_HIGH) ? "high" : "low"); + switch (type) { case INT3472_GPIO_TYPE_RESET: case INT3472_GPIO_TYPE_POWERDOWN: @@ -257,7 +266,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares, break; case INT3472_GPIO_TYPE_CLK_ENABLE: - ret = skl_int3472_register_clock(int3472, agpio); + ret = skl_int3472_register_clock(int3472, agpio, polarity); if (ret) err_msg = "Failed to register clock\n";