linux-kernel - RE: [PATCH v5 2/3] firmware: xilinx: Implement ZynqMP power management APIs

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Message-ID: <BYAPR02MB59921AA0C4ADDC078FA28BE3B8970@BYAPR02MB5992.namprd02.prod.outlook.com>
Date:   Tue, 29 Jan 2019 20:40:04 +0000
From:   Jolly Shah <JOLLYS@...inx.com>
To:     Michal Simek <michals@...inx.com>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "andy.gross@...aro.org" <andy.gross@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "geert+renesas@...der.be" <geert+renesas@...der.be>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "sean.wang@...iatek.com" <sean.wang@...iatek.com>,
        "m.szyprowski@...sung.com" <m.szyprowski@...sung.com>,
        Michal Simek <michals@...inx.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>
CC:     Rajan Vaja <RAJANV@...inx.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Rajan Vaja <RAJANV@...inx.com>
Subject: RE: [PATCH v5 2/3] firmware: xilinx: Implement ZynqMP power
 management APIs

Hi Michal,

> -----Original Message-----
> From: Michal Simek [mailto:michal.simek@...inx.com]
> Sent: Tuesday, January 29, 2019 5:11 AM
> To: Jolly Shah <JOLLYS@...inx.com>; matthias.bgg@...il.com;
> andy.gross@...aro.org; shawnguo@...nel.org; geert+renesas@...der.be;
> bjorn.andersson@...aro.org; sean.wang@...iatek.com;
> m.szyprowski@...sung.com; Michal Simek <michals@...inx.com>;
> robh+dt@...nel.org; mark.rutland@....com
> Cc: Rajan Vaja <RAJANV@...inx.com>; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; Rajan Vaja
> <RAJANV@...inx.com>; Jolly Shah <JOLLYS@...inx.com>
> Subject: Re: [PATCH v5 2/3] firmware: xilinx: Implement ZynqMP power
> management APIs
> 
> On 14. 01. 19 20:22, Jolly Shah wrote:
> > From: Rajan Vaja <rajan.vaja@...inx.com>
> >
> > Add Xilinx ZynqMP firmware APIs to set suspend mode
> > and inform firmware that master has initialized its
> > own power management.
> >
> > Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
> > Signed-off-by: Jolly Shah <jollys@...inx.com>
> > ---
> >  drivers/firmware/xilinx/zynqmp.c     | 29 +++++++++++++++++++++++++++++
> >  include/linux/firmware/xlnx-zynqmp.h | 20 ++++++++++++++++++++
> >  2 files changed, 49 insertions(+)
> >
> > diff --git a/drivers/firmware/xilinx/zynqmp.c
> b/drivers/firmware/xilinx/zynqmp.c
> > index 84b3fd2..c7a3b6c 100644
> > --- a/drivers/firmware/xilinx/zynqmp.c
> > +++ b/drivers/firmware/xilinx/zynqmp.c
> > @@ -428,6 +428,33 @@ static int zynqmp_pm_clock_getparent(u32 clock_id,
> u32 *parent_id)
> >  	return ret;
> >  }
> >
> > +/**
> > + * zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
> > + *			       master has initialized its own power management
> > + *
> > + * This API function is to be used for notify the power management controller
> > + * about the completed power management initialization.
> > + *
> > + * Return: Returns status, either success or error+reason
> > + */
> > +static int zynqmp_pm_init_finalize(void)
> > +{
> > +	return zynqmp_pm_invoke_fn(PM_PM_INIT_FINALIZE, 0, 0, 0, 0, NULL);
> > +}
> > +
> > +/**
> > + * zynqmp_pm_set_suspend_mode()	- Set system suspend mode
> > + * @mode:	Mode to set for system suspend
> > + *
> > + * This API function is used to set mode of system suspend.
> > + *
> > + * Return: Returns status, either success or error+reason
> > + */
> > +static int zynqmp_pm_set_suspend_mode(u32 mode)
> > +{
> > +	return zynqmp_pm_invoke_fn(PM_SET_SUSPEND_MODE, mode, 0, 0, 0,
> NULL);
> > +}
> > +
> >  static const struct zynqmp_eemi_ops eemi_ops = {
> >  	.get_api_version = zynqmp_pm_get_api_version,
> >  	.query_data = zynqmp_pm_query_data,
> > @@ -440,6 +467,8 @@ static const struct zynqmp_eemi_ops eemi_ops = {
> >  	.clock_getrate = zynqmp_pm_clock_getrate,
> >  	.clock_setparent = zynqmp_pm_clock_setparent,
> >  	.clock_getparent = zynqmp_pm_clock_getparent,
> > +	.init_finalize = zynqmp_pm_init_finalize,
> > +	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
> 
> This has been created long time ago and there was one more patch in the
> middle of this.
> I have applied reset driver just now which didn't have any issue that's
> why please rebase your patches on the top of this branch
> https://github.com/Xilinx/linux-xlnx/commits/zynqmp/soc and resend.
> 

Rebased and sent v6.

Thanks,
Jolly Shah

> Thanks,
> Michal