From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 6C36D16DC0E; Mon, 11 Nov 2024 21:40:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361212; cv=none; b=QAqom/AIvi3+tLw2cceFr1zuY1SSLLzBY+/wFKL6H7MS9wHnZImcwP8L0FnEfD9fMLS2uk0cCCasliToag/104II5TtYGSsSSp8kgG3j9yEcRMCibAUYrG9zeJVtzMjLC7aybF+rIAnunJJ4WZnRvowf5ENOBc9HQWxrRXnW/4E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361212; c=relaxed/simple; bh=PEMBij3nSwWEOtYjjW03xhQPeVizCPnNovZ+ZQe+NxQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jVmEsI+JsOe0zLRd/ub8a+Mv10yBF9V/sKRcTVPeJ0FrpfbdlOvF4UJ+APp5Xq8yDRQBZN0t379L8J6UG+mwAtqmBpRHlsaqrWBes2tpxjbnZgMQ7vYxJnwVKSjA1fMHB7tD/gAuC99k+UOUuGAF1YGQtJJB9sHzG/d5f4g+/pA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=PeeEgWAm; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="PeeEgWAm" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361208; bh=PEMBij3nSwWEOtYjjW03xhQPeVizCPnNovZ+ZQe+NxQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=PeeEgWAmAMNrUf2LkZ+/uFIYCfd4p5+KyqdBttRJ1VZPkETctNyx5SDZeLPd2eySF SV6o4dnhs80AGyl7dS4oR1I1QDX+clHqJDH4N+DDaoYhtpZjDe922tUiLXmhYq3eaR Gk5bPo5IeX/Kcl/Q3zI8fieLiyNI9xTKyw2FGoXY= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:03 +0100 Subject: [PATCH v4 1/9] power: supply: sysfs: print single value in uevent for POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-1-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=3176; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=PEMBij3nSwWEOtYjjW03xhQPeVizCPnNovZ+ZQe+NxQ=; b=Q0CcjGh9IdrsTiwuhtc26fH7x92TZy2MTu1xePbsdRs43G6WJlMcUSsh/YBC1bINihvWhQxRv m+tlLz4gNsCDY5NbLfmDqs6uCZi47wRDJkvTlat5pqGU1sXpE6Z+uPc X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Currently an uevent contains the same string representation of a property as sysfs. However for POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR this is specially formatted to indicate all possible values. This doesn't make sense for uevents and complicates parsing. Instead only include the currently active value in uevents. As currently no in-tree driver uses POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR this change is not a problem. Soon the property will actually be used so fix the formatting before that happens. Signed-off-by: Thomas Wei=C3=9Fschuh --- drivers/power/supply/power_supply_sysfs.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supp= ly/power_supply_sysfs.c index 571de43fcca9827cf0fe3023e453defbf1eaec7d..a7351b9c8fe34a464a4e69b1a1a= 4a4179c1a4b4f 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -268,9 +268,11 @@ static ssize_t power_supply_show_enum_with_available( return count; } =20 -static ssize_t power_supply_show_property(struct device *dev, - struct device_attribute *attr, - char *buf) { +static ssize_t power_supply_format_property(struct device *dev, + bool uevent, + struct device_attribute *attr, + char *buf) +{ ssize_t ret; struct power_supply *psy =3D dev_get_drvdata(dev); const struct power_supply_attr *ps_attr =3D to_ps_attr(attr); @@ -303,6 +305,8 @@ static ssize_t power_supply_show_property(struct device= *dev, psy->desc->usb_types, value.intval, buf); break; case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + if (uevent) /* no possible values in uevents */ + goto default_format; ret =3D power_supply_charge_behaviour_show(dev, psy->desc->charge_behavi= ours, value.intval, buf); break; @@ -310,6 +314,7 @@ static ssize_t power_supply_show_property(struct device= *dev, ret =3D sysfs_emit(buf, "%s\n", value.strval); break; default: +default_format: if (ps_attr->text_values_len > 0 && value.intval < ps_attr->text_values_len && value.intval >=3D 0) { ret =3D sysfs_emit(buf, "%s\n", ps_attr->text_values[value.intval]); @@ -321,6 +326,13 @@ static ssize_t power_supply_show_property(struct devic= e *dev, return ret; } =20 +static ssize_t power_supply_show_property(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return power_supply_format_property(dev, false, attr, buf); +} + static ssize_t power_supply_store_property(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -437,7 +449,7 @@ static int add_prop_uevent(const struct device *dev, st= ruct kobj_uevent_env *env pwr_attr =3D &power_supply_attrs[prop]; dev_attr =3D &pwr_attr->dev_attr; =20 - ret =3D power_supply_show_property((struct device *)dev, dev_attr, prop_b= uf); + ret =3D power_supply_format_property((struct device *)dev, true, dev_attr= , prop_buf); if (ret =3D=3D -ENODEV || ret =3D=3D -ENODATA) { /* * When a battery is absent, we expect -ENODEV. Don't abort; --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 27E2F155A30; Mon, 11 Nov 2024 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361216; cv=none; b=SJ2byz+wcvPdFsUW1zi5j339UJtUT5+z0WIybH6X6r76JXWFo4LYswtmqLmMEBFYQm8PRmFl9YvwnOsZjGhCiGG4gUvHVgZkHZHJ9r/T2l32aNs7wdRpJ07etIsBPu9E+/JNMSY2AopXZahCF01xISvRUxcWOPlKP2Wc+8/EF6g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361216; c=relaxed/simple; bh=xPxtcrDyr6tHzIlAClodERcs8bwCHKUIZ8Uk9sumlJ0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=m4M7Bi2KklQbgjyT38EAb3gz/fObKOA/IaupZkiRDJOMfwaIgCX0d5Qzi+yWPzc6ZWomJIRWkE0U+b02nbYSel+GKyLEJgv4bHTFfHx7ThORlZ23EqyzsnfX5z+pzUeTu15DRj8yJdVfzNwWUGu2iQSOPD0TpRkaNZ9aRn6MZrg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=dHbKomXx; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="dHbKomXx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361208; bh=xPxtcrDyr6tHzIlAClodERcs8bwCHKUIZ8Uk9sumlJ0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=dHbKomXxc9choKCT/sCmkR9He7ArmIIUvGmB7caxFx08lxPAcg1ec1susUTVA1uBe ygEPPTojRMGMMPvRg6xmR/rg1ve+fgbsdZJ+n1tABX2TZ0bgRGVoOubFB0m3ixsM7G GW1lTZ5Y8ZVUieGv/mds9MtlvJXIjCh9HOSVOhoY= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:04 +0100 Subject: [PATCH v4 2/9] power: supply: core: rename psy_has_property() to psy_desc_has_property() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-2-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Sebastian Reichel X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=1924; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=xPxtcrDyr6tHzIlAClodERcs8bwCHKUIZ8Uk9sumlJ0=; b=yrvnvdOsKSW70kihrdE3Z8H47tI7CuaFJWj2ZAfnCDMhEOmszqWNdVBClLvJaCbGjPAh/VXDz ZzV3WBwrMs4BCBfeFX3K06vCCIhKNy6exf4ip41JWAWSTKlXnTtDQWe X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= The function only takes a desc as parameter, align the naming. Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Hans de Goede Reviewed-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/suppl= y/power_supply_core.c index 16085eff008442ecd04016cd12c2854a0230d9c6..2f61f6b90b99f40ee04a6d63ebc= 20036f0447102 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -1180,8 +1180,8 @@ bool power_supply_battery_bti_in_range(struct power_s= upply_battery_info *info, } EXPORT_SYMBOL_GPL(power_supply_battery_bti_in_range); =20 -static bool psy_has_property(const struct power_supply_desc *psy_desc, - enum power_supply_property psp) +static bool psy_desc_has_property(const struct power_supply_desc *psy_desc, + enum power_supply_property psp) { bool found =3D false; int i; @@ -1206,7 +1206,7 @@ int power_supply_get_property(struct power_supply *ps= y, return -ENODEV; } =20 - if (psy_has_property(psy->desc, psp)) + if (psy_desc_has_property(psy->desc, psp)) return psy->desc->get_property(psy, psp, val); else if (power_supply_battery_info_has_prop(psy->battery_info, psp)) return power_supply_battery_info_get_prop(psy->battery_info, psp, val); @@ -1300,7 +1300,7 @@ static int psy_register_thermal(struct power_supply *= psy) return 0; =20 /* Register battery zone device psy reports temperature */ - if (psy_has_property(psy->desc, POWER_SUPPLY_PROP_TEMP)) { + if (psy_desc_has_property(psy->desc, POWER_SUPPLY_PROP_TEMP)) { /* Prefer our hwmon device and avoid duplicates */ struct thermal_zone_params tzp =3D { .no_hwmon =3D IS_ENABLED(CONFIG_POWER_SUPPLY_HWMON) --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 37F0F1B140D; Mon, 11 Nov 2024 21:40:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361213; cv=none; b=rbu2utFiqKE3dY256v9pzfQXg2MnCKhsk3oSL2T0sE8PcK+qryxrl8L+h/ePTPFq//Llwit+FwUG+oaJBw44uL7djmftRCB0P1LvojHkGgvRChCTQzC85hxRUKpUrBV9+kKEZN8MjuaTGoQpz4FpRGDen21z9plwlSiqO9jBq8I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361213; c=relaxed/simple; bh=nhEr3viuDM9KKMmstDUchZ6pQ7Ygl+kyihGIUWgSr5M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=YibaJavdsNSiGczbFAaCIIJYLbsw9uTYLi+g4esfAf1QWbPYOQBcBm94GFvKBemqkHkBZabkTGp0QgxTI5lOLewR4Ag15FiSs+vt+R4W33CCT9NEjkcl2663aTdF8xURLfRw9/4g6OLVcGu1yO3IBXJVRvk8uSvMNO7iA1jWs8w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=pGBoSBFJ; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="pGBoSBFJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361208; bh=nhEr3viuDM9KKMmstDUchZ6pQ7Ygl+kyihGIUWgSr5M=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=pGBoSBFJcbvwpZqwX8NEtzz7MOGCJq5GK6Jsyh8qD9R/1tKdOPeZhIxrJPZC98C33 wDx/kDBDLe6F2f/qawpuAhOcNyfGIqx3UTfrRN8fk0xEahKl7HOmvk17WGRwVBdWmg drNiL/CurHq9wTNi8qLpqhs0s+fe4uZUB8/1m08E= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:05 +0100 Subject: [PATCH v4 3/9] power: supply: core: introduce power_supply_has_property() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-3-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Sebastian Reichel X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=1978; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=nhEr3viuDM9KKMmstDUchZ6pQ7Ygl+kyihGIUWgSr5M=; b=brMj9YXiKAD7Hm3c8wzeZH583aS8Oc/YZpIwPgS49fFSQ9wXJzuWKilB2qtnOu3g+19feJdqh wo6RHvE2HoRC7w38kaPcEIHBzN40BVQEOOZcBKn3UPqfI/OjabX9R70 X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Introduce a helper to check if a power supply implements a certain property. It will be used by the sysfs and hwmon code to remove similar open-coded checks. It also paves the way for the extension API to hook into. Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Hans de Goede Reviewed-by: Sebastian Reichel --- drivers/power/supply/power_supply.h | 2 ++ drivers/power/supply/power_supply_core.c | 12 ++++++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/power/supply/power_supply.h b/drivers/power/supply/pow= er_supply.h index 7434a6f2477504ee6c0a3c7420e1444387b41180..5dabbd895538003096b62d03fdd= 0201b82b090e6 100644 --- a/drivers/power/supply/power_supply.h +++ b/drivers/power/supply/power_supply.h @@ -15,6 +15,8 @@ struct power_supply; =20 extern int power_supply_property_is_writeable(struct power_supply *psy, enum power_supply_property psp); +extern bool power_supply_has_property(struct power_supply *psy, + enum power_supply_property psp); =20 #ifdef CONFIG_SYSFS =20 diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/suppl= y/power_supply_core.c index 2f61f6b90b99f40ee04a6d63ebc20036f0447102..502b07468b93dfb7f5a6c209258= 8d931a7d015f2 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -1196,6 +1196,18 @@ static bool psy_desc_has_property(const struct power= _supply_desc *psy_desc, return found; } =20 +bool power_supply_has_property(struct power_supply *psy, + enum power_supply_property psp) +{ + if (psy_desc_has_property(psy->desc, psp)) + return true; + + if (power_supply_battery_info_has_prop(psy->battery_info, psp)) + return true; + + return false; +} + int power_supply_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 607F21B86CF; Mon, 11 Nov 2024 21:40:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361213; cv=none; b=nJZVA8gzNLX68GZwozKA5uIlIsRHpGNXz2nlj8nrcyyYuMOoqWq3VBBZShjru7J2axmqgG4qsqlScV88F8oGQcYk60C+PHnVx0IfrStjpVTZ/ajxP4aL/1uG1M79oRCB3R9hGvDzeuFSmPRgCinFAO0x+ZqSCQ507+thEciz+pE= ARC-Message-Signature: i=1; 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a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361208; bh=WoMvZJIJux5dqs2E/f2Vyc4MaZs8AL36MsJXVYFWisU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=BlrR/K1Xb342Rc1PaIFOcYjyHUUH9PebcSHGGMq0Q3IpyurqrbuGWupI1pT77VYfj eFAtu0BBC5dvKre88yc5JWNkbRIHbtTjhl4E+eUN/1Q1fA6bIAAPLn3I5A+AODMYBv 6HEA8VvPNalEHzPeZMtAZDqG/uRGTxsKq9kRMcFQ= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:06 +0100 Subject: [PATCH v4 4/9] power: supply: hwmon: prepare for power supply extensions Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-4-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Sebastian Reichel X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=3062; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=WoMvZJIJux5dqs2E/f2Vyc4MaZs8AL36MsJXVYFWisU=; b=iNSCnaLWGctCjtcixkDpwdJqHaTwvZ7xtoRnT9tiLCkUOR+W545SWEoR/Ces3ouT04VWVjvl7 g2uEwoAhVRVBNcZq4ano1pNMpoKwlaIhnoWh+5ZVOmmmOpzOxespcNw X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= The upcoming extension API will add properties which are not part of the the power_supply_desc. Use power_supply_has_property() so the properties from extensions are also checked. Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Hans de Goede Reviewed-by: Sebastian Reichel --- drivers/power/supply/power_supply_hwmon.c | 50 +++++++++++++++------------= ---- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/drivers/power/supply/power_supply_hwmon.c b/drivers/power/supp= ly/power_supply_hwmon.c index 01be04903d7d2465ae2acb9eeb0b55a87868bb87..95245e6a6baa3e85ae8551e71f4= f7905639a3325 100644 --- a/drivers/power/supply/power_supply_hwmon.c +++ b/drivers/power/supply/power_supply_hwmon.c @@ -349,9 +349,28 @@ static const struct hwmon_chip_info power_supply_hwmon= _chip_info =3D { .info =3D power_supply_hwmon_info, }; =20 +static const enum power_supply_property power_supply_hwmon_props[] =3D { + POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_POWER_AVG, + POWER_SUPPLY_PROP_POWER_NOW, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TEMP_MAX, + POWER_SUPPLY_PROP_TEMP_MIN, + POWER_SUPPLY_PROP_TEMP_ALERT_MIN, + POWER_SUPPLY_PROP_TEMP_ALERT_MAX, + POWER_SUPPLY_PROP_TEMP_AMBIENT, + POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN, + POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX, + POWER_SUPPLY_PROP_VOLTAGE_AVG, + POWER_SUPPLY_PROP_VOLTAGE_MIN, + POWER_SUPPLY_PROP_VOLTAGE_MAX, + POWER_SUPPLY_PROP_VOLTAGE_NOW, +}; + int power_supply_add_hwmon_sysfs(struct power_supply *psy) { - const struct power_supply_desc *desc =3D psy->desc; struct power_supply_hwmon *psyhw; struct device *dev =3D &psy->dev; struct device *hwmon; @@ -377,32 +396,11 @@ int power_supply_add_hwmon_sysfs(struct power_supply = *psy) goto error; } =20 - for (i =3D 0; i < desc->num_properties; i++) { - const enum power_supply_property prop =3D desc->properties[i]; - - switch (prop) { - case POWER_SUPPLY_PROP_CURRENT_AVG: - case POWER_SUPPLY_PROP_CURRENT_MAX: - case POWER_SUPPLY_PROP_CURRENT_NOW: - case POWER_SUPPLY_PROP_POWER_AVG: - case POWER_SUPPLY_PROP_POWER_NOW: - case POWER_SUPPLY_PROP_TEMP: - case POWER_SUPPLY_PROP_TEMP_MAX: - case POWER_SUPPLY_PROP_TEMP_MIN: - case POWER_SUPPLY_PROP_TEMP_ALERT_MIN: - case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: - case POWER_SUPPLY_PROP_TEMP_AMBIENT: - case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN: - case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX: - case POWER_SUPPLY_PROP_VOLTAGE_AVG: - case POWER_SUPPLY_PROP_VOLTAGE_MIN: - case POWER_SUPPLY_PROP_VOLTAGE_MAX: - case POWER_SUPPLY_PROP_VOLTAGE_NOW: + for (i =3D 0; i < ARRAY_SIZE(power_supply_hwmon_props); i++) { + const enum power_supply_property prop =3D power_supply_hwmon_props[i]; + + if (power_supply_has_property(psy, prop)) set_bit(prop, psyhw->props); - break; - default: - break; - } } =20 name =3D psy->desc->name; --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 3CB8B1BF328; Mon, 11 Nov 2024 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361216; cv=none; b=j1Vf3C29ph2GNMOrFrJoY6OBwb142fRP7hY8AMMBEHS5dj8jWNbQg9luBAk3Lorvdi9moqPZru1dJBkEpPcyn/7fjSgMeGvHOisNp2mJqUCmvajtMangj5zLrAUSvtHze9TVWLBUzRlPsW7eZS6j6XeVutbZn0AEWuW7Yj7G/hE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; 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a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361209; bh=IK/x/Cq7ZA9U8RzTSdkN5gmLpQF3F49M1qwA6I2D3Ao=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=q1RVt5c52o+1gNm1mnjwFrNl0iRlPy2NF6nGGOy7dth6Z5BkAm1JaxDgI3etvoA/H yScw65Ec9aLPGAaAPRZeRedU0U1YHxYguipFFnqRh+d+xEh7V3Sa3DT5pbj11BW3iv wvLx81i66POc6qLjqvQND97dPWrhVPEMqMvcxTOs= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:07 +0100 Subject: [PATCH v4 5/9] power: supply: sysfs: prepare for power supply extensions Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-5-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Sebastian Reichel X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=1743; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=IK/x/Cq7ZA9U8RzTSdkN5gmLpQF3F49M1qwA6I2D3Ao=; b=OVmbweWyERIkD+3u/cQSsHiAvOSooJ6WsxKcE4WPWREU6O2jUviYpNAQsPOSciqiGJBS2HYWv ap6u6k8NtIwDEyFGLSmcgp6qAZ2iCL6hvv/fBayMuPV4A6LCxlfqFwL X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= The upcoming extension API will add properties which are not part of the the power_supply_desc. Use power_supply_has_property() so the properties from extensions are also checked. Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Hans de Goede Reviewed-by: Sebastian Reichel --- drivers/power/supply/power_supply_sysfs.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supp= ly/power_supply_sysfs.c index a7351b9c8fe34a464a4e69b1a1a4a4179c1a4b4f..bfe48fe01a8d03828c2e539e1e6= e5e9fc5c60167 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -378,7 +378,6 @@ static umode_t power_supply_attr_is_visible(struct kobj= ect *kobj, struct device *dev =3D kobj_to_dev(kobj); struct power_supply *psy =3D dev_get_drvdata(dev); umode_t mode =3D S_IRUSR | S_IRGRP | S_IROTH; - int i; =20 if (!power_supply_attrs[attrno].prop_name) return 0; @@ -386,19 +385,11 @@ static umode_t power_supply_attr_is_visible(struct ko= bject *kobj, if (attrno =3D=3D POWER_SUPPLY_PROP_TYPE) return mode; =20 - for (i =3D 0; i < psy->desc->num_properties; i++) { - int property =3D psy->desc->properties[i]; - - if (property =3D=3D attrno) { - if (power_supply_property_is_writeable(psy, property) > 0) - mode |=3D S_IWUSR; - - return mode; - } - } - - if (power_supply_battery_info_has_prop(psy->battery_info, attrno)) + if (power_supply_has_property(psy, attrno)) { + if (power_supply_property_is_writeable(psy, attrno) > 0) + mode |=3D S_IWUSR; return mode; + } =20 return 0; } --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 3CCBC1BF7E0; Mon, 11 Nov 2024 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361217; cv=none; b=Iv/6jF3kfinpI2+nM5ZMbiRjNa9yPK6KQbm0Ff2zJ3bM4B8nsQHw6Gj2NA2sPdgSXBuGRJXPxeemqJkCT+I6uSDZb6PBUKjGUp71JbRGM9IvpTouAfj/RZRtA/mGPTvaREg2zZTbLfAG0FTYEc1h850R121rs7hTirU1Puhre9Q= ARC-Message-Signature: i=1; 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a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361209; bh=QYgcF01QtPE15FfXFZBgPtS96Bnv77IqVsOl66BIaxM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=MxfNVAc/LOpZMDoBfMeRLIIt6TY0G81uJHjFXX8ZZZhK9TOD+o1QCD4T2iv/ICdiY w97KBNo4gKfsqbvZaRREaFON3Bor5Axk9o7mbfD9xZ20+xgTDyAvWaS1i3yzcfDe0a 9pCbJeRI8EpMo+1s4ji5zF2EWBNBrnKwy00bmR9Y= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:08 +0100 Subject: [PATCH v4 6/9] power: supply: sysfs: rework uevent property loop Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-6-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=3185; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=QYgcF01QtPE15FfXFZBgPtS96Bnv77IqVsOl66BIaxM=; b=72BLc6lhhG3HHoRzUdq/8DihVQQ6vKjEh+bJHCAOXxq58XnBfX5SPlqkocCnNQnjyWA2TcuFA UAtII2hWZfKCGkqcXrY4278etmCj1t8mGTCzsIjgT9wEIWSntu8gINT X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Instead of looping through all properties known to be supported by the psy, loop over all known properties and decide based on the return value of power_supply_get_property() whether the property existed. This makes the code shorter now and even more so when power supply extensions are added. It also simplifies the locking, as it can all happen inside power_supply_get_property(). Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Hans de Goede --- drivers/power/supply/power_supply_sysfs.c | 28 +++++----------------------- 1 file changed, 5 insertions(+), 23 deletions(-) diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supp= ly/power_supply_sysfs.c index bfe48fe01a8d03828c2e539e1e6e5e9fc5c60167..99bfe1f03eb8326d38c4e2831c9= 670313b42e425 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -289,7 +289,7 @@ static ssize_t power_supply_format_property(struct devi= ce *dev, dev_dbg_ratelimited(dev, "driver has no data for `%s' property\n", attr->attr.name); - else if (ret !=3D -ENODEV && ret !=3D -EAGAIN) + else if (ret !=3D -ENODEV && ret !=3D -EAGAIN && ret !=3D -EINVAL) dev_err_ratelimited(dev, "driver failed to report `%s' property: %zd\n", attr->attr.name, ret); @@ -441,7 +441,7 @@ static int add_prop_uevent(const struct device *dev, st= ruct kobj_uevent_env *env dev_attr =3D &pwr_attr->dev_attr; =20 ret =3D power_supply_format_property((struct device *)dev, true, dev_attr= , prop_buf); - if (ret =3D=3D -ENODEV || ret =3D=3D -ENODATA) { + if (ret =3D=3D -ENODEV || ret =3D=3D -ENODATA || ret =3D=3D -EINVAL) { /* * When a battery is absent, we expect -ENODEV. Don't abort; * send the uevent with at least the PRESENT=3D0 property @@ -462,11 +462,7 @@ static int add_prop_uevent(const struct device *dev, s= truct kobj_uevent_env *env =20 int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *= env) { - const struct power_supply *psy =3D dev_get_drvdata(dev); - const enum power_supply_property *battery_props =3D - power_supply_battery_info_properties; - unsigned long psy_drv_properties[POWER_SUPPLY_ATTR_CNT / - sizeof(unsigned long) + 1] =3D {0}; + struct power_supply *psy =3D dev_get_drvdata(dev); int ret =3D 0, j; char *prop_buf; =20 @@ -494,22 +490,8 @@ int power_supply_uevent(const struct device *dev, stru= ct kobj_uevent_env *env) if (ret) goto out; =20 - for (j =3D 0; j < psy->desc->num_properties; j++) { - set_bit(psy->desc->properties[j], psy_drv_properties); - ret =3D add_prop_uevent(dev, env, psy->desc->properties[j], - prop_buf); - if (ret) - goto out; - } - - for (j =3D 0; j < power_supply_battery_info_properties_size; j++) { - if (test_bit(battery_props[j], psy_drv_properties)) - continue; - if (!power_supply_battery_info_has_prop(psy->battery_info, - battery_props[j])) - continue; - ret =3D add_prop_uevent(dev, env, battery_props[j], - prop_buf); + for (j =3D 0; j < POWER_SUPPLY_ATTR_CNT; j++) { + ret =3D add_prop_uevent(dev, env, j, prop_buf); if (ret) goto out; } --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 BACEA1BC068; Mon, 11 Nov 2024 21:40:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361215; cv=none; b=MVGdOzYTg3explw8R71As2rU5O/9Cp9FaV8lq0xUg/bqN9Jyouc5wCVjOeJOmi22+/9ouMtjnJErgJXwchUe1IZR9CVpfs5Kcq2DN4Sl62CE4qthPPIP1CQ9dX5Ql1NX41e+VqfbS/QQFJU/gryEs0kF2G3vfmpD9M9mlRgO2JI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361215; c=relaxed/simple; bh=C4+MAZNKeWQqaF3eZREkoRvsC4QlkPtGxUK9FFK12o8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=eoZILgLhCouxrTRLV2dJozAYJWKWPOJJOjHPSlrnZ6TH98LlumeG/ERBtdYr7ppOi06f7Xb4IgGks5F24SMHzgVnh7y5hFzgJBBjGzXmvuAYF5psx1wAT5cfOaJpXiyJYBiI76PZ61mVj6ioW4diTtc6ZM8BxemIrFmK2C5h9V8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=YVwcGOWg; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="YVwcGOWg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361209; bh=C4+MAZNKeWQqaF3eZREkoRvsC4QlkPtGxUK9FFK12o8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=YVwcGOWgVMrmEhzPpGfkanOiDa9oV6xirzJGqbcYLauXGgMvYCzrsQ+6834K06TTJ uRRsPcFF9ZwuyQJ0CMgBufTjYbALhA26f2b2kArwqoxIsFITeUS/tqE+GkD9OXmyBu M8HmAA8voKc2eGv2XOQ1Ak9vnQaA2VWfGcFuuORw= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:09 +0100 Subject: [PATCH v4 7/9] power: supply: core: implement extension API Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-7-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=14120; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=C4+MAZNKeWQqaF3eZREkoRvsC4QlkPtGxUK9FFK12o8=; b=+dI9CaneTQduecDaVbuDAi/1Zucl6xOY4roU99ZOGOrGSuDZvx92+sWfEL99gE1apdeQ4dcpL xd5r6jdyJl4B1JLftQQOCjIjw5VI3oNTP3r2R1Y98tabHbL8kcmeCoG X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Various drivers, mostly in platform/x86 extend the ACPI battery driver with additional sysfs attributes to implement more UAPIs than are exposed through ACPI by using various side-channels, like WMI, nonstandard ACPI or EC communication. While the created sysfs attributes look similar to the attributes provided by the powersupply core, there are various deficiencies: * They don't show up in uevent payload. * They can't be queried with the standard in-kernel APIs. * They don't work with triggers. * The extending driver has to reimplement all of the parsing, formatting and sysfs display logic. * Writing a extension driver is completely different from writing a normal power supply driver. This extension API avoids all of these issues. An extension is just a "struct power_supply_ext" with the same kind of callbacks as in a normal "struct power_supply_desc". The API is meant to be used via battery_hook_register(), the same way as the current extensions. Signed-off-by: Thomas Wei=C3=9Fschuh --- drivers/power/supply/power_supply.h | 14 +++ drivers/power/supply/power_supply_core.c | 155 ++++++++++++++++++++++++++= ++-- drivers/power/supply/power_supply_sysfs.c | 22 ++++- include/linux/power_supply.h | 32 ++++++ 4 files changed, 213 insertions(+), 10 deletions(-) diff --git a/drivers/power/supply/power_supply.h b/drivers/power/supply/pow= er_supply.h index 5dabbd895538003096b62d03fdd0201b82b090e6..4c3e602c416cec556173a8eb1a3= 114c13ded71b7 100644 --- a/drivers/power/supply/power_supply.h +++ b/drivers/power/supply/power_supply.h @@ -9,6 +9,8 @@ * Modified: 2004, Oct Szabolcs Gyurko */ =20 +#include + struct device; struct device_type; struct power_supply; @@ -17,6 +19,18 @@ extern int power_supply_property_is_writeable(struct pow= er_supply *psy, enum power_supply_property psp); extern bool power_supply_has_property(struct power_supply *psy, enum power_supply_property psp); +extern bool power_supply_ext_has_property(const struct power_supply_ext *e= xt, + enum power_supply_property psp); + +struct power_supply_ext_registration { + struct list_head list_head; + const struct power_supply_ext *ext; + void *data; +}; + +#define power_supply_for_each_extension(pos, psy) \ + lockdep_assert_held(&(psy)->extensions_sem); \ + list_for_each_entry(pos, &(psy)->extensions, list_head) =20 #ifdef CONFIG_SYSFS =20 diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/suppl= y/power_supply_core.c index 502b07468b93dfb7f5a6c2092588d931a7d015f2..bf3054ed034e091adefcdbf9887= 3a108b4c90fde 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -81,6 +81,7 @@ static int __power_supply_changed_work(struct device *dev= , void *data) =20 static void power_supply_changed_work(struct work_struct *work) { + int ret; unsigned long flags; struct power_supply *psy =3D container_of(work, struct power_supply, changed_work); @@ -88,6 +89,16 @@ static void power_supply_changed_work(struct work_struct= *work) dev_dbg(&psy->dev, "%s\n", __func__); =20 spin_lock_irqsave(&psy->changed_lock, flags); + + if (unlikely(psy->update_groups)) { + psy->update_groups =3D false; + spin_unlock_irqrestore(&psy->changed_lock, flags); + ret =3D sysfs_update_groups(&psy->dev.kobj, power_supply_dev_type.groups= ); + if (ret) + dev_warn(&psy->dev, "failed to update sysfs groups: %pe\n", ERR_PTR(ret= )); + spin_lock_irqsave(&psy->changed_lock, flags); + } + /* * Check 'changed' here to avoid issues due to race between * power_supply_changed() and this routine. In worst case @@ -1196,15 +1207,37 @@ static bool psy_desc_has_property(const struct powe= r_supply_desc *psy_desc, return found; } =20 +bool power_supply_ext_has_property(const struct power_supply_ext *psy_ext, + enum power_supply_property psp) +{ + bool found =3D false; + int i; + + for (i =3D 0; i < psy_ext->num_properties; i++) { + if (psy_ext->properties[i] =3D=3D psp) { + found =3D true; + break; + } + } + + return found; +} + bool power_supply_has_property(struct power_supply *psy, enum power_supply_property psp) { + struct power_supply_ext_registration *reg; + if (psy_desc_has_property(psy->desc, psp)) return true; =20 if (power_supply_battery_info_has_prop(psy->battery_info, psp)) return true; =20 + power_supply_for_each_extension(reg, psy) + if (power_supply_ext_has_property(reg->ext, psp)) + return true; + return false; } =20 @@ -1212,12 +1245,21 @@ int power_supply_get_property(struct power_supply *= psy, enum power_supply_property psp, union power_supply_propval *val) { + struct power_supply_ext_registration *reg; + if (atomic_read(&psy->use_cnt) <=3D 0) { if (!psy->initialized) return -EAGAIN; return -ENODEV; } =20 + guard(rwsem_read)(&psy->extensions_sem); + + power_supply_for_each_extension(reg, psy) { + if (power_supply_ext_has_property(reg->ext, psp)) + return reg->ext->get_property(psy, reg->ext, reg->data, psp, val); + } + if (psy_desc_has_property(psy->desc, psp)) return psy->desc->get_property(psy, psp, val); else if (power_supply_battery_info_has_prop(psy->battery_info, psp)) @@ -1231,7 +1273,23 @@ int power_supply_set_property(struct power_supply *p= sy, enum power_supply_property psp, const union power_supply_propval *val) { - if (atomic_read(&psy->use_cnt) <=3D 0 || !psy->desc->set_property) + struct power_supply_ext_registration *reg; + + if (atomic_read(&psy->use_cnt) <=3D 0) + return -ENODEV; + + guard(rwsem_read)(&psy->extensions_sem); + + power_supply_for_each_extension(reg, psy) { + if (power_supply_ext_has_property(reg->ext, psp)) { + if (reg->ext->set_property) + return reg->ext->set_property(psy, reg->ext, reg->data, psp, val); + else + return -ENODEV; + } + } + + if (!psy->desc->set_property) return -ENODEV; =20 return psy->desc->set_property(psy, psp, val); @@ -1241,7 +1299,22 @@ EXPORT_SYMBOL_GPL(power_supply_set_property); int power_supply_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { - return psy->desc->property_is_writeable && psy->desc->property_is_writeab= le(psy, psp); + struct power_supply_ext_registration *reg; + + power_supply_for_each_extension(reg, psy) { + if (power_supply_ext_has_property(reg->ext, psp)) { + if (reg->ext->property_is_writeable) + return reg->ext->property_is_writeable(psy, reg->ext, + reg->data, psp); + else + return -ENODEV; + } + } + + if (!psy->desc->property_is_writeable) + return -ENODEV; + + return psy->desc->property_is_writeable(psy, psp); } =20 void power_supply_external_power_changed(struct power_supply *psy) @@ -1260,6 +1333,67 @@ int power_supply_powers(struct power_supply *psy, st= ruct device *dev) } EXPORT_SYMBOL_GPL(power_supply_powers); =20 +static int power_supply_update_sysfs_and_hwmon(struct power_supply *psy) +{ + unsigned long flags; + + spin_lock_irqsave(&psy->changed_lock, flags); + psy->update_groups =3D true; + spin_unlock_irqrestore(&psy->changed_lock, flags); + + power_supply_changed(psy); + + power_supply_remove_hwmon_sysfs(psy); + return power_supply_add_hwmon_sysfs(psy); +} + +int power_supply_register_extension(struct power_supply *psy, const struct= power_supply_ext *ext, + void *data) +{ + struct power_supply_ext_registration *reg; + size_t i; + + guard(rwsem_write)(&psy->extensions_sem); + + power_supply_for_each_extension(reg, psy) + if (reg->ext =3D=3D ext) + return -EEXIST; + + for (i =3D 0; i < ext->num_properties; i++) + if (power_supply_has_property(psy, ext->properties[i])) + return -EEXIST; + + reg =3D kmalloc(sizeof(*reg), GFP_KERNEL); + if (!reg) + return -ENOMEM; + + reg->ext =3D ext; + reg->data =3D data; + list_add(®->list_head, &psy->extensions); + + return power_supply_update_sysfs_and_hwmon(psy); +} +EXPORT_SYMBOL_GPL(power_supply_register_extension); + +void power_supply_unregister_extension(struct power_supply *psy, const str= uct power_supply_ext *ext) +{ + struct power_supply_ext_registration *reg; + + guard(rwsem_write)(&psy->extensions_sem); + + power_supply_for_each_extension(reg, psy) { + if (reg->ext =3D=3D ext) { + list_del(®->list_head); + kfree(reg); + power_supply_update_sysfs_and_hwmon(psy); + return; + } + } + + dev_warn(&psy->dev, "Trying to unregister invalid extension"); +} +EXPORT_SYMBOL_GPL(power_supply_unregister_extension); + static void power_supply_dev_release(struct device *dev) { struct power_supply *psy =3D to_power_supply(dev); @@ -1414,6 +1548,9 @@ __power_supply_register(struct device *parent, } =20 spin_lock_init(&psy->changed_lock); + init_rwsem(&psy->extensions_sem); + INIT_LIST_HEAD(&psy->extensions); + rc =3D device_add(dev); if (rc) goto device_add_failed; @@ -1426,13 +1563,15 @@ __power_supply_register(struct device *parent, if (rc) goto register_thermal_failed; =20 - rc =3D power_supply_create_triggers(psy); - if (rc) - goto create_triggers_failed; + scoped_guard(rwsem_read, &psy->extensions_sem) { + rc =3D power_supply_create_triggers(psy); + if (rc) + goto create_triggers_failed; =20 - rc =3D power_supply_add_hwmon_sysfs(psy); - if (rc) - goto add_hwmon_sysfs_failed; + rc =3D power_supply_add_hwmon_sysfs(psy); + if (rc) + goto add_hwmon_sysfs_failed; + } =20 /* * Update use_cnt after any uevents (most notably from device_add()). diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supp= ly/power_supply_sysfs.c index 99bfe1f03eb8326d38c4e2831c9670313b42e425..2cf25bacd7a1bb66e5a72629bff= aa6d16bfbf3be 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -268,6 +268,23 @@ static ssize_t power_supply_show_enum_with_available( return count; } =20 +static ssize_t power_supply_show_charge_behaviour(struct device *dev, + struct power_supply *psy, + union power_supply_propval *value, + char *buf) +{ + struct power_supply_ext_registration *reg; + + power_supply_for_each_extension(reg, psy) { + if (power_supply_ext_has_property(reg->ext, POWER_SUPPLY_PROP_CHARGE_BEH= AVIOUR)) + return power_supply_charge_behaviour_show(dev, reg->ext->charge_behavio= urs, + value->intval, buf); + } + + return power_supply_charge_behaviour_show(dev, psy->desc->charge_behaviou= rs, + value->intval, buf); +} + static ssize_t power_supply_format_property(struct device *dev, bool uevent, struct device_attribute *attr, @@ -307,8 +324,7 @@ static ssize_t power_supply_format_property(struct devi= ce *dev, case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: if (uevent) /* no possible values in uevents */ goto default_format; - ret =3D power_supply_charge_behaviour_show(dev, psy->desc->charge_behavi= ours, - value.intval, buf); + ret =3D power_supply_show_charge_behaviour(dev, psy, &value, buf); break; case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER: ret =3D sysfs_emit(buf, "%s\n", value.strval); @@ -385,6 +401,8 @@ static umode_t power_supply_attr_is_visible(struct kobj= ect *kobj, if (attrno =3D=3D POWER_SUPPLY_PROP_TYPE) return mode; =20 + guard(rwsem_read)(&psy->extensions_sem); + if (power_supply_has_property(psy, attrno)) { if (power_supply_property_is_writeable(psy, attrno) > 0) mode |=3D S_IWUSR; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index b98106e1a90f34bce5129317a099f363248342b9..016e44cb3eb5eb7ace01a032661= f65a5d81a522f 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -15,6 +15,8 @@ #include #include #include +#include +#include #include #include =20 @@ -281,6 +283,27 @@ struct power_supply_desc { int use_for_apm; }; =20 +struct power_supply_ext { + u8 charge_behaviours; + const enum power_supply_property *properties; + size_t num_properties; + + int (*get_property)(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp, + union power_supply_propval *val); + int (*set_property)(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp, + const union power_supply_propval *val); + int (*property_is_writeable)(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp); +}; + struct power_supply { const struct power_supply_desc *desc; =20 @@ -300,10 +323,13 @@ struct power_supply { struct delayed_work deferred_register_work; spinlock_t changed_lock; bool changed; + bool update_groups; bool initialized; bool removing; atomic_t use_cnt; struct power_supply_battery_info *battery_info; + struct rw_semaphore extensions_sem; /* protects "extensions" */ + struct list_head extensions; #ifdef CONFIG_THERMAL struct thermal_zone_device *tzd; struct thermal_cooling_device *tcd; @@ -878,6 +904,12 @@ devm_power_supply_register(struct device *parent, extern void power_supply_unregister(struct power_supply *psy); extern int power_supply_powers(struct power_supply *psy, struct device *de= v); =20 +extern int power_supply_register_extension(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data); +extern void power_supply_unregister_extension(struct power_supply *psy, + const struct power_supply_ext *ext); + #define to_power_supply(device) container_of(device, struct power_supply, = dev) =20 extern void *power_supply_get_drvdata(struct power_supply *psy); --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 27EAC1BD9EB; Mon, 11 Nov 2024 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361216; cv=none; b=aZ1+UuKZRhVCdHu4uQmLt5QV3KGYrpEGUYEecYQ496ISK9gvl0WUeBrgxq1ZOuan+hR3i1TLcEUrlT7J6VkVUQEDcv3Gp3GqKPbSNMCMpyz2Tw2RkLXMvDS1mhhypT9OAluwxdXrjgqoHhOLH6Pu3yPqdyH6QJmLpkVr4CpR4k8= ARC-Message-Signature: i=1; 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a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731361209; bh=4iqMRN7FLf79GTyhGQg8fs3vEjA1Cjx5IA5RBAJpeNE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=FAhjT9seLAlGjv9MlySWrI6zADUyVqwPgt6HWlgLhrJa8vijAWtFnAHvN1NvV4xPH sB02gIMa2JpUe5inHQWXB6ZMYZd2YJGSI67VEpFlQG5mQ6GEMhupOyMLdk7ghigN+i Hu8fh87768RwbxUsk0JR5Z8O2Pov/NcXggJNkYdY= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:10 +0100 Subject: [PATCH v4 8/9] power: supply: test-power: implement a power supply extension Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-8-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=5131; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=4iqMRN7FLf79GTyhGQg8fs3vEjA1Cjx5IA5RBAJpeNE=; b=j+0NvPWfNwUgib4IBnuOML8UBCcjtjCQp7YlMLj0w6JjYY8Mc7us5tlUh0byu2FELhtpW8rhH r7J3pl69Aw3AUogOXzuvteKz8EdrVDGKkUO3yEi81p0k5AK4GSJjhX6 X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Allow easy testing of the new power supply extension functionality. Signed-off-by: Thomas Wei=C3=9Fschuh --- drivers/power/supply/test_power.c | 102 ++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 102 insertions(+) diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_= power.c index 442ceb7795e1d84e34da2801d228d53fb67e08d9..af05f3c5c292fd5702109df7dfa= 177d85c9d18c9 100644 --- a/drivers/power/supply/test_power.c +++ b/drivers/power/supply/test_power.c @@ -37,6 +37,7 @@ static int battery_charge_counter =3D -1000; static int battery_current =3D -1600; static enum power_supply_charge_behaviour battery_charge_behaviour =3D POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; +static bool battery_hook; =20 static bool module_initialized; =20 @@ -238,6 +239,80 @@ static const struct power_supply_config test_power_con= figs[] =3D { }, }; =20 +static int power_supply_ext_manufacture_year =3D 1234; +static const enum power_supply_property power_supply_ext_props[] =3D { + POWER_SUPPLY_PROP_MANUFACTURE_YEAR, +}; + +static int power_supply_ext_get_property(struct power_supply *psy, + const struct power_supply_ext *ext, + void *ext_data, + enum power_supply_property psp, + union power_supply_propval *val) +{ + switch (psp) { + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + val->intval =3D power_supply_ext_manufacture_year; + break; + default: + return -EINVAL; + } + return 0; +} + +static int power_supply_ext_set_property(struct power_supply *psy, + const struct power_supply_ext *ext, + void *ext_data, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + switch (psp) { + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + power_supply_ext_manufacture_year =3D val->intval; + break; + default: + return -EINVAL; + } + return 0; +} + +static int power_supply_ext_property_is_writeable(struct power_supply *psy, + const struct power_supply_ext *ext, + void *ext_data, + enum power_supply_property psp) +{ + return true; +} + +static const struct power_supply_ext power_supply_ext =3D { + .properties =3D power_supply_ext_props, + .num_properties =3D ARRAY_SIZE(power_supply_ext_props), + .get_property =3D power_supply_ext_get_property, + .set_property =3D power_supply_ext_set_property, + .property_is_writeable =3D power_supply_ext_property_is_writeable, +}; + +static void test_battery_configure_battery_hook(bool enable) +{ + struct power_supply *psy; + + if (battery_hook =3D=3D enable) + return; + + psy =3D test_power_supplies[TEST_BATTERY]; + + if (enable) { + if (power_supply_register_extension(psy, &power_supply_ext, NULL)) { + pr_err("registering battery extension failed\n"); + return; + } + } else { + power_supply_unregister_extension(psy, &power_supply_ext); + } + + battery_hook =3D enable; +} + static int __init test_power_init(void) { int i; @@ -258,6 +333,8 @@ static int __init test_power_init(void) } } =20 + test_battery_configure_battery_hook(true); + module_initialized =3D true; return 0; failed: @@ -524,6 +601,22 @@ static int param_set_battery_current(const char *key, =20 #define param_get_battery_current param_get_int =20 +static int param_set_battery_hook(const char *key, + const struct kernel_param *kp) +{ + int tmp; + + if (1 !=3D sscanf(key, "%d", &tmp)) + return -EINVAL; + if (tmp !=3D 1 && tmp !=3D 0) + return -EINVAL; + + test_battery_configure_battery_hook(tmp); + return 0; +} + +#define param_get_battery_hook param_get_int + static const struct kernel_param_ops param_ops_ac_online =3D { .set =3D param_set_ac_online, .get =3D param_get_ac_online, @@ -574,6 +667,11 @@ static const struct kernel_param_ops param_ops_battery= _current =3D { .get =3D param_get_battery_current, }; =20 +static const struct kernel_param_ops param_ops_battery_hook =3D { + .set =3D param_set_battery_hook, + .get =3D param_get_battery_hook, +}; + #define param_check_ac_online(name, p) __param_check(name, p, void); #define param_check_usb_online(name, p) __param_check(name, p, void); #define param_check_battery_status(name, p) __param_check(name, p, void); @@ -584,6 +682,7 @@ static const struct kernel_param_ops param_ops_battery_= current =3D { #define param_check_battery_voltage(name, p) __param_check(name, p, void); #define param_check_battery_charge_counter(name, p) __param_check(name, p,= void); #define param_check_battery_current(name, p) __param_check(name, p, void); +#define param_check_battery_hook(name, p) __param_check(name, p, void); =20 =20 module_param(ac_online, ac_online, 0644); @@ -621,6 +720,9 @@ MODULE_PARM_DESC(battery_charge_counter, module_param(battery_current, battery_current, 0644); MODULE_PARM_DESC(battery_current, "battery current (milliampere)"); =20 +module_param(battery_hook, battery_hook, 0644); +MODULE_PARM_DESC(battery_hook, "battery hook"); + MODULE_DESCRIPTION("Power supply driver for testing"); MODULE_AUTHOR("Anton Vorontsov "); MODULE_LICENSE("GPL"); --=20 2.47.0 From nobody Sat Nov 23 18:20:28 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 0F4811B86F7; Mon, 11 Nov 2024 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361217; cv=none; b=tWDczyGwwuxHBzcyzk1/p8Pi4UHwnGfTZMXYpLMRkjTeVsOi6PbiK4+5D2Rs1i/Aax/JFOzDN4jwKCkiRiPJ6hasJIcEH1Q38RYRych/vMS+tZ6pviCYfsWWvTEyPyP7QxUxCPmb9pI4SBjdM6qh/F/lUH2v6YBwVJxvKL1E6Uk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731361217; c=relaxed/simple; bh=z21J+OltFWwTkbmEn7wl0xG9/rhtTpo3QenCuL3bWPQ=; 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h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ZSZaTDSfsJTUjeoQybIKjg7qG5FtrOgL6DZtM/whHkNdZRxCPxIEV7ZgRcKIy7GCu GxKM4aMXsUjP1ZcdozNmY8rqNSt0EsJg20dN/JwOLc6bzRvTQmrDsKMSyjgHjyf9MP /DbxFN1ZBPGgZ9iWjdwodikjJiamPAF3XsTVW+8U= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Nov 2024 22:40:11 +0100 Subject: [PATCH v4 9/9] power: supply: cros_charge-control: use power_supply extensions Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241111-power-supply-extensions-v4-9-7240144daa8e@weissschuh.net> References: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> In-Reply-To: <20241111-power-supply-extensions-v4-0-7240144daa8e@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Benson Leung , Guenter Roeck Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731361208; l=10701; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=z21J+OltFWwTkbmEn7wl0xG9/rhtTpo3QenCuL3bWPQ=; b=Lguc2j8iuLKHKj0BxN9dqGPb67JZiqYrD9/hcKmWGI+wd/BW0f4Eamy2Y+Fo8WZoOGkfGRC7n dqKbCZ6FIjVDox/A5Fy8c67L0FNsNaIVri53wxeOGW4C8IbwGACKAUK X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Power supply extensions provide an easier mechanism to implement additional properties for existing power supplies. Use that instead of reimplementing the sysfs attributes manually. Signed-off-by: Thomas Wei=C3=9Fschuh --- drivers/power/supply/cros_charge-control.c | 205 +++++++++++--------------= ---- 1 file changed, 75 insertions(+), 130 deletions(-) diff --git a/drivers/power/supply/cros_charge-control.c b/drivers/power/sup= ply/cros_charge-control.c index 17c53591ce197d08d97c94d3d4359a282026dd7d..f0933ac3f042c19e7c1dfdc9aff= 1ad03443ceb16 100644 --- a/drivers/power/supply/cros_charge-control.c +++ b/drivers/power/supply/cros_charge-control.c @@ -18,13 +18,6 @@ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE) | \ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) =20 -enum CROS_CHCTL_ATTR { - CROS_CHCTL_ATTR_START_THRESHOLD, - CROS_CHCTL_ATTR_END_THRESHOLD, - CROS_CHCTL_ATTR_CHARGE_BEHAVIOUR, - _CROS_CHCTL_ATTR_COUNT -}; - /* * Semantics of data *returned* from the EC API and Linux sysfs differ * slightly, also the v1 API can not return any data. @@ -41,13 +34,7 @@ struct cros_chctl_priv { struct power_supply *hooked_battery; u8 cmd_version; =20 - /* The callbacks need to access this priv structure. - * As neither the struct device nor power_supply are under the drivers - * control, embed the attributes within priv to use with container_of(). - */ - struct device_attribute device_attrs[_CROS_CHCTL_ATTR_COUNT]; - struct attribute *attributes[_CROS_CHCTL_ATTR_COUNT]; - struct attribute_group group; + struct power_supply_ext psy_ext; =20 enum power_supply_charge_behaviour current_behaviour; u8 current_start_threshold, current_end_threshold; @@ -114,123 +101,85 @@ static int cros_chctl_configure_ec(struct cros_chctl= _priv *priv) return cros_chctl_send_charge_control_cmd(priv->cros_ec, priv->cmd_versio= n, &req); } =20 -static struct cros_chctl_priv *cros_chctl_attr_to_priv(struct attribute *a= ttr, - enum CROS_CHCTL_ATTR idx) -{ - struct device_attribute *dev_attr =3D container_of(attr, struct device_at= tribute, attr); - - return container_of(dev_attr, struct cros_chctl_priv, device_attrs[idx]); -} +static const enum power_supply_property cros_chctl_psy_ext_props[] =3D { + POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR, /* has to be first */ + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, +}; =20 -static ssize_t cros_chctl_store_threshold(struct device *dev, struct cros_= chctl_priv *priv, - int is_end_threshold, const char *buf, size_t count) +static int cros_chctl_psy_ext_get_prop(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp, + union power_supply_propval *val) { - int ret, val; + struct cros_chctl_priv *priv =3D data; =20 - ret =3D kstrtoint(buf, 10, &val); - if (ret < 0) - return ret; - if (val < 0 || val > 100) + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD: + val->intval =3D priv->current_start_threshold; + return 0; + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD: + val->intval =3D priv->current_end_threshold; + return 0; + case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + val->intval =3D priv->current_behaviour; + return 0; + default: return -EINVAL; - - if (is_end_threshold) { - if (val <=3D priv->current_start_threshold) - return -EINVAL; - priv->current_end_threshold =3D val; - } else { - if (val >=3D priv->current_end_threshold) - return -EINVAL; - priv->current_start_threshold =3D val; } - - if (priv->current_behaviour =3D=3D POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) { - ret =3D cros_chctl_configure_ec(priv); - if (ret < 0) - return ret; - } - - return count; } =20 -static ssize_t charge_control_start_threshold_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_START_THRESHOLD); =20 - return sysfs_emit(buf, "%u\n", (unsigned int)priv->current_start_threshol= d); -} - -static ssize_t charge_control_start_threshold_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static int cros_chctl_psy_ext_set_prop(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp, + const union power_supply_propval *val) { - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_START_THRESHOLD); - - return cros_chctl_store_threshold(dev, priv, 0, buf, count); -} - -static ssize_t charge_control_end_threshold_show(struct device *dev, struc= t device_attribute *attr, - char *buf) -{ - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_END_THRESHOLD); - - return sysfs_emit(buf, "%u\n", (unsigned int)priv->current_end_threshold); -} - -static ssize_t charge_control_end_threshold_store(struct device *dev, stru= ct device_attribute *attr, - const char *buf, size_t count) -{ - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_END_THRESHOLD); - - return cros_chctl_store_threshold(dev, priv, 1, buf, count); -} - -static ssize_t charge_behaviour_show(struct device *dev, struct device_att= ribute *attr, char *buf) -{ - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_CHARGE_BEHAVIOUR); - - return power_supply_charge_behaviour_show(dev, EC_CHARGE_CONTROL_BEHAVIOU= RS, - priv->current_behaviour, buf); -} - -static ssize_t charge_behaviour_store(struct device *dev, struct device_at= tribute *attr, - const char *buf, size_t count) -{ - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(&attr->attr, - CROS_CHCTL_ATTR_CHARGE_BEHAVIOUR); + struct cros_chctl_priv *priv =3D data; int ret; =20 - ret =3D power_supply_charge_behaviour_parse(EC_CHARGE_CONTROL_BEHAVIOURS,= buf); - if (ret < 0) - return ret; - - priv->current_behaviour =3D ret; + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD: + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD: + if (val->intval < 0 || val->intval > 100) + return -EINVAL; =20 - ret =3D cros_chctl_configure_ec(priv); - if (ret < 0) - return ret; + if (psp =3D=3D POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD) { + if (val->intval <=3D priv->current_start_threshold) + return -EINVAL; + priv->current_end_threshold =3D val->intval; + } else { + if (val->intval >=3D priv->current_end_threshold) + return -EINVAL; + priv->current_start_threshold =3D val->intval; + } + + if (priv->current_behaviour =3D=3D POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) { + ret =3D cros_chctl_configure_ec(priv); + if (ret < 0) + return ret; + } =20 - return count; + return 0; + case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + priv->current_behaviour =3D val->intval; + ret =3D cros_chctl_configure_ec(priv); + if (ret < 0) + return ret; + return 0; + default: + return -EINVAL; + } } =20 -static umode_t cros_chtl_attr_is_visible(struct kobject *kobj, struct attr= ibute *attr, int n) +static int cros_chctl_psy_prop_is_writeable(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp) { - struct cros_chctl_priv *priv =3D cros_chctl_attr_to_priv(attr, n); - - if (priv->cmd_version < 2) { - if (n =3D=3D CROS_CHCTL_ATTR_START_THRESHOLD) - return 0; - if (n =3D=3D CROS_CHCTL_ATTR_END_THRESHOLD) - return 0; - } - - return attr->mode; + return true; } =20 static int cros_chctl_add_battery(struct power_supply *battery, struct acp= i_battery_hook *hook) @@ -241,7 +190,7 @@ static int cros_chctl_add_battery(struct power_supply *= battery, struct acpi_batt return 0; =20 priv->hooked_battery =3D battery; - return device_add_group(&battery->dev, &priv->group); + return power_supply_register_extension(battery, &priv->psy_ext, priv); } =20 static int cros_chctl_remove_battery(struct power_supply *battery, struct = acpi_battery_hook *hook) @@ -249,7 +198,7 @@ static int cros_chctl_remove_battery(struct power_suppl= y *battery, struct acpi_b struct cros_chctl_priv *priv =3D container_of(hook, struct cros_chctl_pri= v, battery_hook); =20 if (priv->hooked_battery =3D=3D battery) { - device_remove_group(&battery->dev, &priv->group); + power_supply_unregister_extension(battery, &priv->psy_ext); priv->hooked_battery =3D NULL; } =20 @@ -275,7 +224,6 @@ static int cros_chctl_probe(struct platform_device *pde= v) struct cros_ec_dev *ec_dev =3D dev_get_drvdata(dev->parent); struct cros_ec_device *cros_ec =3D ec_dev->ec_dev; struct cros_chctl_priv *priv; - size_t i; int ret; =20 ret =3D cros_chctl_fwk_charge_control_versions(cros_ec); @@ -305,23 +253,20 @@ static int cros_chctl_probe(struct platform_device *p= dev) dev_dbg(dev, "Command version: %u\n", (unsigned int)priv->cmd_version); =20 priv->cros_ec =3D cros_ec; - priv->device_attrs[CROS_CHCTL_ATTR_START_THRESHOLD] =3D - (struct device_attribute)__ATTR_RW(charge_control_start_threshold); - priv->device_attrs[CROS_CHCTL_ATTR_END_THRESHOLD] =3D - (struct device_attribute)__ATTR_RW(charge_control_end_threshold); - priv->device_attrs[CROS_CHCTL_ATTR_CHARGE_BEHAVIOUR] =3D - (struct device_attribute)__ATTR_RW(charge_behaviour); - for (i =3D 0; i < _CROS_CHCTL_ATTR_COUNT; i++) { - sysfs_attr_init(&priv->device_attrs[i].attr); - priv->attributes[i] =3D &priv->device_attrs[i].attr; - } - priv->group.is_visible =3D cros_chtl_attr_is_visible; - priv->group.attrs =3D priv->attributes; =20 priv->battery_hook.name =3D dev_name(dev); priv->battery_hook.add_battery =3D cros_chctl_add_battery; priv->battery_hook.remove_battery =3D cros_chctl_remove_battery; =20 + priv->psy_ext.properties =3D cros_chctl_psy_ext_props; + priv->psy_ext.num_properties =3D ARRAY_SIZE(cros_chctl_psy_ext_props); + if (priv->cmd_version =3D=3D 1) + priv->psy_ext.num_properties =3D 1; + priv->psy_ext.charge_behaviours =3D EC_CHARGE_CONTROL_BEHAVIOURS; + priv->psy_ext.get_property =3D cros_chctl_psy_ext_get_prop; + priv->psy_ext.set_property =3D cros_chctl_psy_ext_set_prop; + priv->psy_ext.property_is_writeable =3D cros_chctl_psy_prop_is_writeable; + priv->current_behaviour =3D POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; priv->current_start_threshold =3D 0; priv->current_end_threshold =3D 100; --=20 2.47.0