From: Peter Chen <peter.chen@kernel.org>
To: Manish Narani <manish.narani@xilinx.com>
Cc: gregkh@linuxfoundation.org, michal.simek@xilinx.com,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
git@xilinx.com, Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Subject: Re: [PATCH 1/6] usb: chipidea: Add support for VBUS control with PHY
Date: Thu, 7 Oct 2021 12:44:32 +0800 [thread overview]
Message-ID: <20211007044432.GA4653@Peter> (raw)
In-Reply-To: <1629825378-8089-2-git-send-email-manish.narani@xilinx.com>
On 21-08-24 22:46:13, Manish Narani wrote:
> Some platforms make use of VBUS control over PHY which
> means controller driver has to access PHY registers to
> turn on/off VBUS line.This patch adds support for
> such platforms in chipidea.
>
> Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> Signed-off-by: Manish Narani <manish.narani@xilinx.com>
> ---
> drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
> drivers/usb/chipidea/host.c | 9 +++++++++
> drivers/usb/chipidea/otg_fsm.c | 7 +++++++
> include/linux/usb/chipidea.h | 1 +
> 4 files changed, 18 insertions(+)
>
> diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
> index 89e1d82..dc86b12 100644
> --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> @@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data ci_default_pdata = {
>
> static const struct ci_hdrc_platform_data ci_zynq_pdata = {
> .capoffset = DEF_CAPOFFSET,
> + .flags = CI_HDRC_PHY_VBUS_CONTROL,
> };
>
> static const struct ci_hdrc_platform_data ci_zevio_pdata = {
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index e86d13c..578968d 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -63,6 +63,14 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable)
> priv->enabled = enable;
> }
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL &&
> + ci->usb_phy && ci->usb_phy->set_vbus) {
Indent is needed. Otherwise:
Acked-by: Peter Chen <peter.chen@kernel.org>
Peter
> + if (enable)
> + ci->usb_phy->set_vbus(ci->usb_phy, 1);
> + else
> + ci->usb_phy->set_vbus(ci->usb_phy, 0);
> + }
> +
> if (enable && (ci->platdata->phy_mode == USBPHY_INTERFACE_MODE_HSIC)) {
> /*
> * Marvell 28nm HSIC PHY requires forcing the port to HS mode.
> @@ -71,6 +79,7 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable)
> hw_port_test_set(ci, 5);
> hw_port_test_set(ci, 0);
> }
> +
> return 0;
> };
>
> diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> index 6ed4b00..2f7f94d 100644
> --- a/drivers/usb/chipidea/otg_fsm.c
> +++ b/drivers/usb/chipidea/otg_fsm.c
> @@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
> return;
> }
> }
> +
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + ci->usb_phy->set_vbus(ci->usb_phy, 1);
> +
> /* Disable data pulse irq */
> hw_write_otgsc(ci, OTGSC_DPIE, 0);
>
> @@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
> if (ci->platdata->reg_vbus)
> regulator_disable(ci->platdata->reg_vbus);
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + ci->usb_phy->set_vbus(ci->usb_phy, 0);
> +
> fsm->a_bus_drop = 1;
> fsm->a_bus_req = 0;
> }
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index edf3342..ee38835 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -62,6 +62,7 @@ struct ci_hdrc_platform_data {
> #define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
> #define CI_HDRC_IMX_IS_HSIC BIT(14)
> #define CI_HDRC_PMQOS BIT(15)
> +#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
> enum usb_dr_mode dr_mode;
> #define CI_HDRC_CONTROLLER_RESET_EVENT 0
> #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
> --
> 2.1.1
>
--
Thanks,
Peter Chen
next prev parent reply other threads:[~2021-10-07 4:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 17:16 [PATCH 0/6] Chipidea USB driver Enhancements and Bug Fixes Manish Narani
2021-08-24 17:16 ` [PATCH 1/6] usb: chipidea: Add support for VBUS control with PHY Manish Narani
2021-10-07 4:44 ` Peter Chen [this message]
2021-10-08 4:59 ` Jun Li
2021-08-24 17:16 ` [PATCH 2/6] usb: chipidea: Use usb2 phy for Zynq platform Manish Narani
2021-10-07 4:52 ` Peter Chen
2021-08-24 17:16 ` [PATCH 3/6] usb: chipidea: Check usb_phy exists before using it Manish Narani
2021-10-07 4:54 ` Peter Chen
2021-08-24 17:16 ` [PATCH 4/6] usb: chipidea: Fix return value handling Manish Narani
2021-08-24 17:16 ` [PATCH 5/6] usb: chipidea: core: Add return value function check Manish Narani
2021-10-07 5:00 ` Peter Chen
2021-08-24 17:16 ` [PATCH 6/6] usb: chipidea: udc: Add xilinx revision support Manish Narani
2021-10-07 5:02 ` Peter Chen
2021-10-07 5:03 ` Peter Chen
2021-10-07 5:12 ` [PATCH 0/6] Chipidea USB driver Enhancements and Bug Fixes Peter Chen
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