From: Krzysztof Kozlowski <k.kozlowski@samsung.com> To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mmc@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, Ulf Hansson <ulf.hansson@linaro.org>, Sebastian Reichel <sre@kernel.org>, Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>, David Woodhouse <dwmw2@infradead.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Mark Brown <broonie@kernel.org> Cc: tjakobi@math.uni-bielefeld.de, m.szyprowski@samsung.com, hverkuil@xs4all.nl, Krzysztof Kozlowski <k.kozlowski@samsung.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Subject: [RFC v2 10/13] usb: hub: Power sequence the ports on activation Date: Thu, 05 May 2016 14:34:23 +0200 [thread overview] Message-ID: <1462451666-17945-11-git-send-email-k.kozlowski@samsung.com> (raw) In-Reply-To: <1462451666-17945-1-git-send-email-k.kozlowski@samsung.com> The autodetection of attached USB device might not work on certain boards where the power is delivered externally. These devices also might require a hard reset. Use pwrseq for that in USB hub. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> --- drivers/usb/core/hub.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1c82fcc448f5..0fddaacc62bf 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -26,6 +26,7 @@ #include <linux/mutex.h> #include <linux/random.h> #include <linux/pm_qos.h> +#include <linux/pwrseq.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -1661,7 +1662,17 @@ static int hub_configure(struct usb_hub *hub, usb_hub_adjust_deviceremovable(hdev, hub->descriptor); + /* FIXME: When do the pre-power-on? */ + /* + for (i = 0; i < maxchild; i++) + pwrseq_pre_power_on(hub->ports[i]->pwrseq); + */ + + for (i = 0; i < maxchild; i++) + pwrseq_post_power_on(hub->ports[i]->pwrseq); + hub_activate(hub, HUB_INIT); + return 0; fail: -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: k.kozlowski@samsung.com (Krzysztof Kozlowski) To: linux-arm-kernel@lists.infradead.org Subject: [RFC v2 10/13] usb: hub: Power sequence the ports on activation Date: Thu, 05 May 2016 14:34:23 +0200 [thread overview] Message-ID: <1462451666-17945-11-git-send-email-k.kozlowski@samsung.com> (raw) In-Reply-To: <1462451666-17945-1-git-send-email-k.kozlowski@samsung.com> The autodetection of attached USB device might not work on certain boards where the power is delivered externally. These devices also might require a hard reset. Use pwrseq for that in USB hub. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> --- drivers/usb/core/hub.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1c82fcc448f5..0fddaacc62bf 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -26,6 +26,7 @@ #include <linux/mutex.h> #include <linux/random.h> #include <linux/pm_qos.h> +#include <linux/pwrseq.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -1661,7 +1662,17 @@ static int hub_configure(struct usb_hub *hub, usb_hub_adjust_deviceremovable(hdev, hub->descriptor); + /* FIXME: When do the pre-power-on? */ + /* + for (i = 0; i < maxchild; i++) + pwrseq_pre_power_on(hub->ports[i]->pwrseq); + */ + + for (i = 0; i < maxchild; i++) + pwrseq_post_power_on(hub->ports[i]->pwrseq); + hub_activate(hub, HUB_INIT); + return 0; fail: -- 1.9.1
next prev parent reply other threads:[~2016-05-05 12:35 UTC|newest] Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-05-05 12:34 [RFC v2 00/13] usb/mmc/power: Fix USB/LAN when TFTP booting Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 01/13] usb: misc: usb3503: Clean up on driver unbind Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 18:32 ` Javier Martinez Canillas 2016-05-05 18:32 ` Javier Martinez Canillas 2016-05-06 6:13 ` Krzysztof Kozlowski 2016-05-06 6:13 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 02/13] power/mmc: Move pwrseq drivers to power/pwrseq Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 18:44 ` Javier Martinez Canillas 2016-05-05 18:44 ` Javier Martinez Canillas 2016-05-06 6:15 ` Krzysztof Kozlowski 2016-05-06 6:15 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 03/13] MAINTAINERS: Retain Ulf Hansson as the same maintainer of pwrseq Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 18:46 ` Javier Martinez Canillas 2016-05-05 18:46 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 04/13] power: pwrseq: Enable COMPILE_TEST for drivers Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 18:57 ` Javier Martinez Canillas 2016-05-05 18:57 ` Javier Martinez Canillas 2016-05-05 18:57 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 05/13] power: pwrseq: Remove mmc prefix from mmc_pwrseq Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 19:09 ` Javier Martinez Canillas 2016-05-05 19:09 ` Javier Martinez Canillas 2016-05-06 6:20 ` Krzysztof Kozlowski 2016-05-06 6:20 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 06/13] power: pwrseq: Generalize mmc_pwrseq operations by removing mmc prefix Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 19:14 ` Javier Martinez Canillas 2016-05-05 19:14 ` Javier Martinez Canillas 2016-05-05 19:14 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 07/13] power: pwrseq: simple: Add support for toggling regulator Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 19:31 ` Javier Martinez Canillas 2016-05-05 19:31 ` Javier Martinez Canillas 2016-05-06 6:24 ` Krzysztof Kozlowski 2016-05-06 6:24 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 08/13] usb: hub: Handle deferred probe Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 19:33 ` Javier Martinez Canillas 2016-05-05 19:33 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 09/13] power: pwrseq: Add support for USB hubs with external power Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 19:52 ` Javier Martinez Canillas 2016-05-05 19:52 ` Javier Martinez Canillas 2016-05-05 19:52 ` Javier Martinez Canillas 2016-05-06 6:26 ` Krzysztof Kozlowski 2016-05-06 6:26 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski [this message] 2016-05-05 12:34 ` [RFC v2 10/13] usb: hub: Power sequence the ports on activation Krzysztof Kozlowski 2016-05-05 14:09 ` Alan Stern 2016-05-05 14:09 ` Alan Stern 2016-05-05 14:09 ` Alan Stern 2016-05-05 17:37 ` Krzysztof Kozlowski 2016-05-05 17:37 ` Krzysztof Kozlowski 2016-05-05 19:56 ` Javier Martinez Canillas 2016-05-05 19:56 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 11/13] usb: port: Parse pwrseq phandle from Device Tree Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 20:10 ` Javier Martinez Canillas 2016-05-05 20:10 ` Javier Martinez Canillas 2016-05-06 6:27 ` Krzysztof Kozlowski 2016-05-06 6:27 ` Krzysztof Kozlowski 2016-05-05 12:34 ` [RFC v2 12/13] ARM: dts: exynos: Switch the buck8 to GPIO mode on Odroid U3 Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 20:11 ` Javier Martinez Canillas 2016-05-05 20:11 ` Javier Martinez Canillas 2016-05-05 12:34 ` [RFC v2 13/13] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization " Krzysztof Kozlowski 2016-05-05 12:34 ` Krzysztof Kozlowski 2016-05-05 20:16 ` Javier Martinez Canillas 2016-05-05 20:16 ` Javier Martinez Canillas 2016-05-06 6:28 ` Krzysztof Kozlowski 2016-05-06 6:28 ` Krzysztof Kozlowski 2016-05-05 22:42 ` [RFC v2 00/13] usb/mmc/power: Fix USB/LAN when TFTP booting Rob Herring 2016-05-05 22:42 ` Rob Herring 2016-05-05 22:42 ` Rob Herring 2016-05-06 5:44 ` Peter Chen 2016-05-06 5:44 ` Peter Chen 2016-05-06 6:12 ` Krzysztof Kozlowski 2016-05-06 6:12 ` Krzysztof Kozlowski 2016-05-06 7:15 ` Peter Chen 2016-05-06 7:15 ` Peter Chen 2016-05-06 7:15 ` Peter Chen 2016-05-06 6:10 ` Krzysztof Kozlowski 2016-05-06 6:10 ` Krzysztof Kozlowski 2016-05-06 13:01 ` Rob Herring 2016-05-06 13:01 ` Rob Herring 2016-05-06 13:01 ` Rob Herring 2016-05-09 7:46 ` Ulf Hansson 2016-05-09 7:46 ` Ulf Hansson 2016-05-09 7:46 ` Ulf Hansson 2016-05-09 18:18 ` Rob Herring 2016-05-09 18:18 ` Rob Herring 2016-05-09 18:18 ` Rob Herring 2016-05-10 11:02 ` Ulf Hansson 2016-05-10 11:02 ` Ulf Hansson 2016-05-10 11:02 ` Ulf Hansson 2016-05-28 3:36 ` Peter Chen 2016-05-28 3:36 ` Peter Chen 2016-05-28 3:36 ` Peter Chen 2016-05-31 0:58 ` Peter Chen 2016-05-31 0:58 ` Peter Chen 2016-05-31 0:58 ` Peter Chen 2016-05-31 11:54 ` Krzysztof Kozlowski 2016-05-31 11:54 ` Krzysztof Kozlowski 2016-05-31 11:54 ` Krzysztof Kozlowski 2016-12-13 12:20 ` Hans Verkuil 2016-12-13 12:20 ` Hans Verkuil 2016-12-13 12:34 ` Hans Verkuil 2016-12-13 12:34 ` Hans Verkuil 2016-12-13 13:53 ` Krzysztof Kozlowski 2016-12-13 13:53 ` Krzysztof Kozlowski
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