From: Peter Chen <hzpeterchen@gmail.com>
To: Stephen Boyd <stephen.boyd@linaro.org>
Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Andy Gross <andy.gross@linaro.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Neil Armstrong <narmstrong@baylibre.com>,
Arnd Bergmann <arnd@arndb.de>, Felipe Balbi <balbi@kernel.org>,
Peter Chen <peter.chen@nxp.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v6 23/25] usb: chipidea: Pullup D+ in device mode via phy APIs
Date: Tue, 3 Jan 2017 14:53:19 +0800 [thread overview]
Message-ID: <20170103065318.GB14542@b29397-desktop> (raw)
In-Reply-To: <20161228225711.698-24-stephen.boyd@linaro.org>
On Wed, Dec 28, 2016 at 02:57:09PM -0800, Stephen Boyd wrote:
> If the phy supports it, call phy_set_mode() to pull up D+ when
> required by setting the mode to PHY_MODE_USB_DEVICE. If we want
> to remove the pullup, set the mode to PHY_MODE_USB_HOST.
>
> Cc: Peter Chen <peter.chen@nxp.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
> ---
> drivers/usb/chipidea/udc.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index 0d532a724d48..6d61fa0689b0 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -18,6 +18,7 @@
> #include <linux/kernel.h>
> #include <linux/slab.h>
> #include <linux/pm_runtime.h>
> +#include <linux/phy/phy.h>
> #include <linux/usb/ch9.h>
> #include <linux/usb/gadget.h>
> #include <linux/usb/otg-fsm.h>
> @@ -1609,10 +1610,15 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
> return 0;
>
> pm_runtime_get_sync(&ci->gadget.dev);
> - if (is_on)
> + if (is_on) {
> + if (ci->phy)
> + phy_set_mode(ci->phy, PHY_MODE_USB_DEVICE);
> hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
> - else
> + } else {
> hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
> + if (ci->phy)
> + phy_set_mode(ci->phy, PHY_MODE_USB_HOST);
> + }
> pm_runtime_put_sync(&ci->gadget.dev);
>
> return 0;
> --
Would you describe the use case for it? Why not adding it at
role switch routine?
--
Best Regards,
Peter Chen
next prev parent reply other threads:[~2017-01-03 6:52 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-28 22:56 [PATCH v6 00/25] Support qcom's HSIC USB and rewrite USB2 HS support Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 01/25] of: device: Support loading a module with OF based modalias Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 02/25] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 03/25] usb: ulpi: Support device discovery via DT Stephen Boyd
2017-01-19 6:33 ` Peter Chen
2017-01-19 7:39 ` Greg Kroah-Hartman
2016-12-28 22:56 ` [PATCH v6 04/25] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 05/25] usb: chipidea: Handle extcon events properly Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 06/25] usb: chipidea: Add platform flag for wrapper phy management Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 07/25] usb: chipidea: Notify events when switching host mode Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 08/25] usb: chipidea: Remove locking in ci_udc_start() Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 09/25] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 10/25] usb: chipidea: Consolidate extcon notifiers Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 11/25] usb: chipidea: vbus event may exist before starting gadget Stephen Boyd
2017-01-03 8:00 ` Peter Chen
[not found] ` <148418115431.32258.10648057913784071156@sboyd-linaro>
2017-01-12 9:52 ` Peter Chen
2016-12-28 22:56 ` [PATCH v6 12/25] usb: chipidea: msm: Mark device as runtime pm active Stephen Boyd
2016-12-28 22:56 ` [PATCH v6 13/25] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 14/25] usb: chipidea: msm: Use hw_write_id_reg() instead of writel Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 15/25] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 16/25] usb: chipidea: msm: Mux over secondary phy at the right time Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 17/25] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 18/25] usb: chipidea: msm: Make platform data driver local instead of global Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 19/25] usb: chipidea: msm: Add reset controller for PHY POR bit Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 20/25] usb: chipidea: msm: Handle phy power states Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 21/25] usb: chipidea: msm: Be silent on probe defer errors Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 22/25] usb: chipidea: Drop lock across event_notify during gadget stop Stephen Boyd
2017-01-03 6:46 ` Peter Chen
2016-12-28 22:57 ` [PATCH v6 23/25] usb: chipidea: Pullup D+ in device mode via phy APIs Stephen Boyd
2017-01-03 6:53 ` Peter Chen [this message]
[not found] ` <148418039309.32258.7247753739063801774@sboyd-linaro>
2017-01-12 9:50 ` Peter Chen
[not found] ` <148426139182.20672.2422337338087784924@sboyd-linaro>
2017-01-13 3:35 ` Peter Chen
[not found] ` <148433778067.32719.6179204976256776867@sboyd-linaro>
2017-01-16 3:45 ` Peter Chen
[not found] ` <148467591341.23457.3638889856786813589@sboyd-linaro>
2017-01-18 7:34 ` Peter Chen
2017-01-18 20:54 ` Stephen Boyd
2017-01-18 20:57 ` Rob Herring
2017-01-19 6:29 ` Peter Chen
2016-12-28 22:57 ` [PATCH v6 24/25] phy: Add support for Qualcomm's USB HSIC phy Stephen Boyd
2016-12-28 22:57 ` [PATCH v6 25/25] phy: Add support for Qualcomm's USB HS phy Stephen Boyd
2017-01-20 7:40 ` [PATCH v6 00/25] Support qcom's HSIC USB and rewrite USB2 HS support Peter Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170103065318.GB14542@b29397-desktop \
--to=hzpeterchen@gmail.com \
--cc=andy.gross@linaro.org \
--cc=arnd@arndb.de \
--cc=balbi@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=narmstrong@baylibre.com \
--cc=peter.chen@nxp.com \
--cc=stephen.boyd@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).