From patchwork Fri Jun 23 06:20:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Bara X-Patchwork-Id: 695426 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 DE73DC001B0 for ; Fri, 23 Jun 2023 06:21:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231750AbjFWGU7 (ORCPT ); Fri, 23 Jun 2023 02:20:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43802 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231716AbjFWGUw (ORCPT ); Fri, 23 Jun 2023 02:20:52 -0400 Received: from mail-ej1-x62a.google.com (mail-ej1-x62a.google.com [IPv6:2a00:1450:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B3E710F8; Thu, 22 Jun 2023 23:20:51 -0700 (PDT) Received: by mail-ej1-x62a.google.com with SMTP id a640c23a62f3a-988c495f35fso23562766b.1; Thu, 22 Jun 2023 23:20:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687501249; x=1690093249; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=BrUYy0EMzzbARsdrqQT1VFevs3EbAjVUZG6+spJ/m2k=; b=h1xo63tKbuF5bjBU9/zlOgHjy2UO4M5PPIW28ehIQmhrkoCxNgZPgJkC1mswnocN42 ERnAeQyZQ1VyHhjdvjhr/cZMLaWaDlD4NP1kWSWW4MvnwnYOBhP4zSrH2LtKm5D3k4xI v54p/hE/ljqHWS/tjESc4tnYcr1+uPzr1Rc+NALRTgTducDcZlp4HE/0mpOFshJL+LTx TpfsHerIxyD+45Aq7zJVyjSnSF3t6diIwpYv2DtC9K7aVV3DStmKQmldNVtEgJ/vYe41 h6ibkK8SXuP/Od6BSSBNDmgrmJtne29KmkeUcZ7Ui1k+l/BHzRRr9gd3iswhHUQCl1zz NB4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687501249; x=1690093249; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=BrUYy0EMzzbARsdrqQT1VFevs3EbAjVUZG6+spJ/m2k=; b=cE15KwJU4KmGT+m0lw18vWo9yRakhHHZ29Hc52EGTqnLi4znxtw8MwoxKJtp+P++oU DG+L2i4H57Kya8Z1MzAOL+n+x8EtrJ0sJ7VjseBZnU6BWZlTvnX7JUbwEvgRJd+vkAmJ fcruemMGuNXldbVojsUEZFocOpXEhbVx8AUzFFyZDavz0h79HR8zRvzgxPaT7EWLEZrj zSJYnAgUuH0UYpnYhsA7ZQn+LMFueChHJDKEiyfcM1eaNYagJwKkefCmUstOiyhHmRns iXHsvQrICRepkdzFe0lfvzP7yVJ7Y8joRyvwPvxxhpAqzXZSkJ/5+YapmSguQ1V9Br7V EkuA== X-Gm-Message-State: AC+VfDzRy4EaV/L9RlPU0YHQIZSCLI3AgCS2kSl0sCn2OOpc+5Qa1rl2 vSRF1G9UUjtIkuIGcbibM9o= X-Google-Smtp-Source: ACHHUZ7X+85jiSQE9+jmSnzNyVfNaUn6a2wQZB7r16nKyXUHgSKn80SAuogNIWHTqoH0uNW6mG0pSg== X-Received: by 2002:a17:907:1c9c:b0:965:6aff:4f02 with SMTP id nb28-20020a1709071c9c00b009656aff4f02mr20404853ejc.41.1687501249148; Thu, 22 Jun 2023 23:20:49 -0700 (PDT) Received: from [127.0.1.1] ([91.230.2.244]) by smtp.gmail.com with ESMTPSA id n20-20020a170906725400b009878b0b5302sm5630346ejk.98.2023.06.22.23.20.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Jun 2023 23:20:48 -0700 (PDT) From: Benjamin Bara Date: Fri, 23 Jun 2023 08:20:36 +0200 Subject: [PATCH v6 1/3] usb: misc: onboard-hub: support multiple power supplies MIME-Version: 1.0 Message-Id: <20230620-hx3-v6-1-6a1d6f8ce689@skidata.com> References: <20230620-hx3-v6-0-6a1d6f8ce689@skidata.com> In-Reply-To: <20230620-hx3-v6-0-6a1d6f8ce689@skidata.com> To: Matthias Kaehlcke , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Benjamin Bara Cc: Alexander Stein , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.12.2 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Benjamin Bara As some of the onboard hubs require multiple power supplies, provide the environment to support them. Signed-off-by: Benjamin Bara --- v6: - %d -> %ld v5: - use ARRAY_SIZE(supply_names) for MAX_SUPPLIES v4: - set num_supplies=1 for the existing hubs - drop duplicate num_supplies in onboard_hub struct - clarify connection between supply_names and MAX_SUPPLIES v3: - fix nits mentioned in v2 v2: - replace (err != 0) with (err) --- drivers/usb/misc/onboard_usb_hub.c | 37 +++++++++++++++++++++++++++++-------- drivers/usb/misc/onboard_usb_hub.h | 7 +++++++ 2 files changed, 36 insertions(+), 8 deletions(-) diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index 12fc6eb67c3b..ff0bdd49ada5 100644 --- a/drivers/usb/misc/onboard_usb_hub.c +++ b/drivers/usb/misc/onboard_usb_hub.c @@ -27,6 +27,17 @@ #include "onboard_usb_hub.h" +/* + * Use generic names, as the actual names might differ between hubs. If a new + * hub requires more than the currently supported supplies, add a new one here. + */ +static const char * const supply_names[] = { + "vdd", + "vdd2", +}; + +#define MAX_SUPPLIES ARRAY_SIZE(supply_names) + static void onboard_hub_attach_usb_driver(struct work_struct *work); static struct usb_device_driver onboard_hub_usbdev_driver; @@ -40,7 +51,7 @@ struct usbdev_node { }; struct onboard_hub { - struct regulator *vdd; + struct regulator_bulk_data supplies[MAX_SUPPLIES]; struct device *dev; const struct onboard_hub_pdata *pdata; struct gpio_desc *reset_gpio; @@ -55,9 +66,9 @@ static int onboard_hub_power_on(struct onboard_hub *hub) { int err; - err = regulator_enable(hub->vdd); + err = regulator_bulk_enable(hub->pdata->num_supplies, hub->supplies); if (err) { - dev_err(hub->dev, "failed to enable regulator: %d\n", err); + dev_err(hub->dev, "failed to enable supplies: %d\n", err); return err; } @@ -75,9 +86,9 @@ static int onboard_hub_power_off(struct onboard_hub *hub) gpiod_set_value_cansleep(hub->reset_gpio, 1); - err = regulator_disable(hub->vdd); + err = regulator_bulk_disable(hub->pdata->num_supplies, hub->supplies); if (err) { - dev_err(hub->dev, "failed to disable regulator: %d\n", err); + dev_err(hub->dev, "failed to disable supplies: %d\n", err); return err; } @@ -232,6 +243,7 @@ static int onboard_hub_probe(struct platform_device *pdev) const struct of_device_id *of_id; struct device *dev = &pdev->dev; struct onboard_hub *hub; + unsigned int i; int err; hub = devm_kzalloc(dev, sizeof(*hub), GFP_KERNEL); @@ -246,9 +258,18 @@ static int onboard_hub_probe(struct platform_device *pdev) if (!hub->pdata) return -EINVAL; - hub->vdd = devm_regulator_get(dev, "vdd"); - if (IS_ERR(hub->vdd)) - return PTR_ERR(hub->vdd); + if (hub->pdata->num_supplies > MAX_SUPPLIES) + return dev_err_probe(dev, -EINVAL, "max %ld supplies supported!\n", + MAX_SUPPLIES); + + for (i = 0; i < hub->pdata->num_supplies; i++) + hub->supplies[i].supply = supply_names[i]; + + err = devm_regulator_bulk_get(dev, hub->pdata->num_supplies, hub->supplies); + if (err) { + dev_err(dev, "Failed to get regulator supplies: %d\n", err); + return err; + } hub->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h index aca5f50eb0da..41a4127a92dc 100644 --- a/drivers/usb/misc/onboard_usb_hub.h +++ b/drivers/usb/misc/onboard_usb_hub.h @@ -8,30 +8,37 @@ struct onboard_hub_pdata { unsigned long reset_us; /* reset pulse width in us */ + unsigned int num_supplies; /* number of supplies */ }; static const struct onboard_hub_pdata microchip_usb424_data = { .reset_us = 1, + .num_supplies = 1, }; static const struct onboard_hub_pdata realtek_rts5411_data = { .reset_us = 0, + .num_supplies = 1, }; static const struct onboard_hub_pdata ti_tusb8041_data = { .reset_us = 3000, + .num_supplies = 1, }; static const struct onboard_hub_pdata genesys_gl850g_data = { .reset_us = 3, + .num_supplies = 1, }; static const struct onboard_hub_pdata genesys_gl852g_data = { .reset_us = 50, + .num_supplies = 1, }; static const struct onboard_hub_pdata vialab_vl817_data = { .reset_us = 10, + .num_supplies = 1, }; static const struct of_device_id onboard_hub_match[] = {