From patchwork Sun Jun 5 14:59:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 9155623 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9F92D6086B for ; Sun, 5 Jun 2016 15:01:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8F81D27D07 for ; Sun, 5 Jun 2016 15:01:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 840BD281AA; Sun, 5 Jun 2016 15:01:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2AB3B2810E for ; Sun, 5 Jun 2016 15:01:53 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1b9ZXP-0002MD-6E; Sun, 05 Jun 2016 15:00:27 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1b9ZX8-00013e-UD for linux-arm-kernel@lists.infradead.org; Sun, 05 Jun 2016 15:00:11 +0000 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EB05264478; Sun, 5 Jun 2016 14:59:53 +0000 (UTC) Received: from shalem.localdomain.com (vpn1-7-198.ams2.redhat.com [10.36.7.198]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u55ExdK6001274; Sun, 5 Jun 2016 10:59:50 -0400 From: Hans de Goede To: Bin Liu , Greg Kroah-Hartman , Kishon Vijay Abraham I Subject: [PATCH v3 3/4] phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31 Date: Sun, 5 Jun 2016 16:59:35 +0200 Message-Id: <1465138776-6003-3-git-send-email-hdegoede@redhat.com> In-Reply-To: <1465138776-6003-1-git-send-email-hdegoede@redhat.com> References: <1465138776-6003-1-git-send-email-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Sun, 05 Jun 2016 14:59:54 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160605_080011_074561_1165F435 X-CRM114-Status: GOOD ( 16.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree , linux-usb@vger.kernel.org, Hans de Goede , Chen-Yu Tsai , Maxime Ripard , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The A31 companion pmic (axp221) does not generate vbus change interrupts when the board is driving vbus, so we must poll when using the pmic for vbus-det _and_ we're driving vbus. Signed-off-by: Hans de Goede Acked-by: Kishon Vijay Abraham I --- Changes in v2: -No changes Changes in v3: -No changes --- drivers/phy/phy-sun4i-usb.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index e3cbaae..a7abae6 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -95,6 +95,7 @@ enum sun4i_usb_phy_type { sun4i_a10_phy, + sun6i_a31_phy, sun8i_a33_phy, sun8i_h3_phy, }; @@ -125,7 +126,6 @@ struct sun4i_usb_phy_data { /* phy0 / otg related variables */ struct extcon_dev *extcon; bool phy0_init; - bool phy0_poll; struct gpio_desc *id_det_gpio; struct gpio_desc *vbus_det_gpio; struct power_supply *vbus_power_supply; @@ -353,6 +353,24 @@ static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data) return data->vbus_det_gpio || data->vbus_power_supply; } +static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data) +{ + if ((data->id_det_gpio && data->id_det_irq < 0) || + (data->vbus_det_gpio && data->vbus_det_irq < 0)) + return true; + + /* + * The A31 companion pmic (axp221) does not generate vbus change + * interrupts when the board is driving vbus, so we must poll + * when using the pmic for vbus-det _and_ we're driving vbus. + */ + if (data->cfg->type == sun6i_a31_phy && + data->vbus_power_supply && data->phys[0].regulator_on) + return true; + + return false; +} + static int sun4i_usb_phy_power_on(struct phy *_phy) { struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); @@ -374,7 +392,7 @@ static int sun4i_usb_phy_power_on(struct phy *_phy) phy->regulator_on = true; /* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */ - if (phy->index == 0 && data->vbus_det_gpio && data->phy0_poll) + if (phy->index == 0 && sun4i_usb_phy0_poll(data)) mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); return 0; @@ -395,7 +413,7 @@ static int sun4i_usb_phy_power_off(struct phy *_phy) * phy0 vbus typically slowly discharges, sometimes this causes the * Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan. */ - if (phy->index == 0 && data->vbus_det_gpio && !data->phy0_poll) + if (phy->index == 0 && !sun4i_usb_phy0_poll(data)) mod_delayed_work(system_wq, &data->detect, POLL_TIME); return 0; @@ -483,7 +501,7 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) if (vbus_notify) extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det); - if (data->phy0_poll) + if (sun4i_usb_phy0_poll(data)) queue_delayed_work(system_wq, &data->detect, POLL_TIME); } @@ -668,11 +686,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) } data->id_det_irq = gpiod_to_irq(data->id_det_gpio); - data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio); - if ((data->id_det_gpio && data->id_det_irq < 0) || - (data->vbus_det_gpio && data->vbus_det_irq < 0)) - data->phy0_poll = true; - if (data->id_det_irq >= 0) { ret = devm_request_irq(dev, data->id_det_irq, sun4i_usb_phy0_id_vbus_det_irq, @@ -684,6 +697,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) } } + data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio); if (data->vbus_det_irq >= 0) { ret = devm_request_irq(dev, data->vbus_det_irq, sun4i_usb_phy0_id_vbus_det_irq, @@ -735,7 +749,7 @@ static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = { static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = { .num_phys = 3, - .type = sun4i_a10_phy, + .type = sun6i_a31_phy, .disc_thresh = 3, .phyctl_offset = REG_PHYCTL_A10, .dedicated_clocks = true,