From patchwork Thu Jun 6 14:50:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 802221 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 5C18F1A2C1F; Thu, 6 Jun 2024 14:51:09 +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=1717685471; cv=none; b=kdU8BrH3r1EUkDQphls5vtVSXAZQYL5bkTR8NOmFqrlSpveu+t2kaClolFYvYqHf4a++rfdAZ3nsH2ZhaARNr1nDDUVPQaMKrTQ4qjd3TlpAowi2xns0KXoWyF/olVGAK81zkTdQEfuvNeaG6WAbO3X2yMqAehWTIcO97dil2u4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717685471; c=relaxed/simple; bh=6oCvgSdJEOjPdJvKlQS+Pcf8TROEDYKoq83uSRvQjYo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HzeWgKMhQHUJMQCFbMgylyIhlR/NRla0GVWSrmbmYTmEVnOm10EGErzMK9V+Y1TChlyfxKg+m5p6itHGABsAUROFh9gJh+NkqZa5+pcUMgwXdSp1xy+KqbYv9J1PSvX/oCe34GlDdzL/idf/BZAZ32QiVxeN7hDjAT0xHPk8rn4= 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=iD+avxTO; 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="iD+avxTO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1717685464; bh=6oCvgSdJEOjPdJvKlQS+Pcf8TROEDYKoq83uSRvQjYo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=iD+avxTOyvezkn2NIuNNRGxpNT198SQ/GsXArrCi27GBH1qS4bbSiyRPv1RIKGBcl ZHz3aPWz7bXoiV5Ldrc23eV7wdHf6dh8KBxMvS/1LtVyXJeIOggQu2eupd0flzKE1y NlAUwS4Fan7ia5pJkHOjfVAKIiJOku3EQeugW9wc= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Thu, 06 Jun 2024 16:50:59 +0200 Subject: [PATCH RFC 5/6] power: supply: test-power: implement a power supply extension Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240606-power-supply-extensions-v1-5-b45669290bdc@weissschuh.net> References: <20240606-power-supply-extensions-v1-0-b45669290bdc@weissschuh.net> In-Reply-To: <20240606-power-supply-extensions-v1-0-b45669290bdc@weissschuh.net> To: Sebastian Reichel , Jeremy Soller , System76 Product Development , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1717685463; l=5121; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=6oCvgSdJEOjPdJvKlQS+Pcf8TROEDYKoq83uSRvQjYo=; b=w1wwY2GFbUQl4dPhZwP0dWiSUEDLObJS+QTaxt9RxLjSEERaVg1beruJFZWQUxRAZgF7Hmxnx 8MRbOY/b226B94qUAwQdlajMP6wi3HZoOE8bQziuIY/AJmK+MZ804JW 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 Weißschuh --- 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 442ceb7795e1..5730cbff6159 100644 --- a/drivers/power/supply/test_power.c +++ b/drivers/power/supply/test_power.c @@ -37,6 +37,7 @@ static int battery_charge_counter = -1000; static int battery_current = -1600; static enum power_supply_charge_behaviour battery_charge_behaviour = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; +static bool battery_hook; static bool module_initialized; @@ -238,6 +239,80 @@ static const struct power_supply_config test_power_configs[] = { }, }; +static int power_supply_ext_manufacture_year = 1234; +static enum power_supply_property power_supply_ext_props[] = { + POWER_SUPPLY_PROP_CHARGE_COUNTER, /* overridden from base supply */ + POWER_SUPPLY_PROP_MANUFACTURE_YEAR, +}; + +static int power_supply_ext_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + switch (psp) { + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + val->intval = power_supply_ext_manufacture_year; + break; + case POWER_SUPPLY_PROP_CHARGE_COUNTER: + val->intval = 1234; + break; + default: + pr_info("%s: some properties deliberately report errors.\n", + __func__); + return -EINVAL; + } + return 0; +} + +static int power_supply_ext_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + switch (psp) { + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + power_supply_ext_manufacture_year = val->intval; + break; + default: + return -EINVAL; + } + return 0; +} + +static int power_supply_ext_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return psp == POWER_SUPPLY_PROP_MANUFACTURE_YEAR; +} + +static const struct power_supply_ext power_supply_ext = { + .properties = power_supply_ext_props, + .num_properties = ARRAY_SIZE(power_supply_ext_props), + .get_property = power_supply_ext_get_property, + .set_property = power_supply_ext_set_property, + .property_is_writeable = power_supply_ext_property_is_writeable, +}; + +static void test_battery_configure_battery_hook(bool enable) +{ + struct power_supply *psy; + + if (battery_hook == enable) + return; + + psy = test_power_supplies[TEST_BATTERY]; + + if (enable) { + if (power_supply_register_extension(psy, &power_supply_ext)) { + pr_err("registering battery extension failed\n"); + return; + } + } else { + power_supply_unregister_extension(psy, &power_supply_ext); + } + + battery_hook = enable; +} + static int __init test_power_init(void) { int i; @@ -258,6 +333,8 @@ static int __init test_power_init(void) } } + test_battery_configure_battery_hook(true); + module_initialized = true; return 0; failed: @@ -524,6 +601,22 @@ static int param_set_battery_current(const char *key, #define param_get_battery_current param_get_int +static int param_set_battery_hook(const char *key, + const struct kernel_param *kp) +{ + int tmp; + + if (1 != sscanf(key, "%d", &tmp)) + return -EINVAL; + if (tmp != 1 && tmp != 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 = { .set = param_set_ac_online, .get = param_get_ac_online, @@ -574,6 +667,11 @@ static const struct kernel_param_ops param_ops_battery_current = { .get = param_get_battery_current, }; +static const struct kernel_param_ops param_ops_battery_hook = { + .set = param_set_battery_hook, + .get = 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 = { #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); 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)"); +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");