RE: [PATCH] rc: img-ir: Add and enable sys clock for IR

[Sifan Naeem]

Hi Mauro,

Seems like you have applied the correct patch after all. ([v2] rc: img-ir: Add and enable sys clock for img-ir)

Thanks,
Sifan

> -----Original Message-----
> From: Mauro Carvalho Chehab [mailto:mchehab@xxxxxxxxxxxxxxx]
> Sent: 08 April 2015 15:41
> To: Sifan Naeem
> Cc: James Hogan; linux-kernel@xxxxxxxxxxxxxxx; linux-
> media@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] rc: img-ir: Add and enable sys clock for IR
> 
> Em Wed, 08 Apr 2015 13:56:14 +0000
> Sifan Naeem <Sifan.Naeem@xxxxxxxxxx> escreveu:
> 
> > Hi Mauro,
> >
> > I sent you a v2 of this patch on 4th February:
> >
> > From: Sifan Naeem
> > Sent: 04 February 2015 16:48
> > To: James Hogan; mchehab@xxxxxxxxxxxxxxx
> > Cc: linux-kernel@xxxxxxxxxxxxxxx; linux-media@xxxxxxxxxxxxxxx; Sifan
> > Naeem
> > Subject: [PATCH v2] rc: img-ir: Add and enable sys clock for img-ir
> >
> >
> > Unfortunately, while trying to improve the commit message in v2 I had
> changed the last word of the patch name from IR to img-ir.
> >
> > Do you want me to do a diff between the 2 patches and send you a new
> patch?
> 
> Yes, please do that, changing the patch name/description to reflect what
> changed since v1.
> 
> Regards,
> Mauro
> 
> >
> > Sifan
> >
> > > -----Original Message-----
> > > From: Mauro Carvalho Chehab [mailto:mchehab@xxxxxxxxxxxxxxx]
> > > Sent: 08 April 2015 12:32
> > > To: Sifan Naeem
> > > Cc: James Hogan; linux-kernel@xxxxxxxxxxxxxxx; linux-
> > > media@xxxxxxxxxxxxxxx
> > > Subject: Re: [PATCH] rc: img-ir: Add and enable sys clock for IR
> > >
> > > Em Tue, 3 Feb 2015 17:30:29 +0000
> > > Sifan Naeem <sifan.naeem@xxxxxxxxxx> escreveu:
> > >
> > > > Gets a handle to the system clock, already described in the
> > > > binding document, and calls the appropriate common clock framework
> > > > functions to mark it prepared/enabled, the common clock framework
> > > > initially enables the clock and doesn't disable it at least until
> > > > the device/driver is removed.
> > > > The system clock to IR is needed for the driver to communicate
> > > > with the IR hardware via MMIO accesses on the system bus, so it
> > > > must not be disabled during use or the driver will malfunction.
> > >
> > > Hmm... patchwork has two versions of this patch, but I have only one
> > > on my e-mail.
> > >
> > > Could you please check if I applied the right one? If not, please
> > > send me an email with a fixup patch.
> > >
> > > Thanks!
> > > Mauro
> > >
> > > >
> > > > Signed-off-by: Sifan Naeem <sifan.naeem@xxxxxxxxxx>
> > > > ---
> > > >  drivers/media/rc/img-ir/img-ir-core.c |   13 +++++++++----
> > > >  drivers/media/rc/img-ir/img-ir.h      |    2 ++
> > > >  2 files changed, 11 insertions(+), 4 deletions(-)
> > > >
> > > > diff --git a/drivers/media/rc/img-ir/img-ir-core.c
> > > > b/drivers/media/rc/img-ir/img-ir-core.c
> > > > index 77c78de..783dd21 100644
> > > > --- a/drivers/media/rc/img-ir/img-ir-core.c
> > > > +++ b/drivers/media/rc/img-ir/img-ir-core.c
> > > > @@ -60,6 +60,8 @@ static void img_ir_setup(struct img_ir_priv
> > > > *priv)
> > > >
> > > >  	if (!IS_ERR(priv->clk))
> > > >  		clk_prepare_enable(priv->clk);
> > > > +	if (!IS_ERR(priv->sys_clk))
> > > > +		clk_prepare_enable(priv->sys_clk);
> > > >  }
> > > >
> > > >  static void img_ir_ident(struct img_ir_priv *priv) @@ -110,10
> > > > +112,11 @@ static int img_ir_probe(struct platform_device *pdev)
> > > >  	priv->clk = devm_clk_get(&pdev->dev, "core");
> > > >  	if (IS_ERR(priv->clk))
> > > >  		dev_warn(&pdev->dev, "cannot get core clock resource\n");
> > > > -	/*
> > > > -	 * The driver doesn't need to know about the system ("sys") or
> > > power
> > > > -	 * modulation ("mod") clocks yet
> > > > -	 */
> > > > +
> > > > +	/* Get sys clock */
> > > > +	priv->sys_clk = devm_clk_get(&pdev->dev, "sys");
> > > > +	if (IS_ERR(priv->sys_clk))
> > > > +		dev_warn(&pdev->dev, "cannot get sys clock resource\n");
> > > >
> > > >  	/* Set up raw & hw decoder */
> > > >  	error = img_ir_probe_raw(priv);
> > > > @@ -152,6 +155,8 @@ static int img_ir_remove(struct
> > > > platform_device
> > > > *pdev)
> > > >
> > > >  	if (!IS_ERR(priv->clk))
> > > >  		clk_disable_unprepare(priv->clk);
> > > > +	if (!IS_ERR(priv->sys_clk))
> > > > +		clk_disable_unprepare(priv->sys_clk);
> > > >  	return 0;
> > > >  }
> > > >
> > > > diff --git a/drivers/media/rc/img-ir/img-ir.h
> > > > b/drivers/media/rc/img-ir/img-ir.h
> > > > index 2ddf560..f1387c0 100644
> > > > --- a/drivers/media/rc/img-ir/img-ir.h
> > > > +++ b/drivers/media/rc/img-ir/img-ir.h
> > > > @@ -138,6 +138,7 @@ struct clk;
> > > >   * @dev:		Platform device.
> > > >   * @irq:		IRQ number.
> > > >   * @clk:		Input clock.
> > > > + * @sys_clk:		System clock.
> > > >   * @reg_base:		Iomem base address of IR register block.
> > > >   * @lock:		Protects IR registers and variables in this struct.
> > > >   * @raw:		Driver data for raw decoder.
> > > > @@ -147,6 +148,7 @@ struct img_ir_priv {
> > > >  	struct device		*dev;
> > > >  	int			irq;
> > > >  	struct clk		*clk;
> > > > +	struct clk		*sys_clk;
> > > >  	void __iomem		*reg_base;
> > > >  	spinlock_t		lock;
> > > >
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