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From:   Benjamin Gaignard <benjamin.gaignard@linaro.org>
Date:   Fri, 20 Dec 2019 13:33:59 +0100
Message-ID: <CA+M3ks663uFr-fpTXoKXd--yKi6q4o525H-eYM9ZsO4dpFS6yg@mail.gmail.com>
Subject: Re: [PATCH] drm/stm: ltdc: move pinctrl to encoder mode set
To:     Philippe CORNU <philippe.cornu@st.com>
Cc:     Yannick FERTRE <yannick.fertre@st.com>,
        Benjamin GAIGNARD <benjamin.gaignard@st.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre TORGUE <alexandre.torgue@st.com>,
        "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>,
        "linux-stm32@st-md-mailman.stormreply.com" 
        <linux-stm32@st-md-mailman.stormreply.com>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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Le lun. 2 d=C3=A9c. 2019 =C3=A0 18:19, Philippe CORNU <philippe.cornu@st.co=
m> a =C3=A9crit :
>
> Dear Yannick,
> Thank you for your patch,
>
> Acked-by: Philippe Cornu <philippe.cornu@st.com>
>

Applied on drm-misc-next,

Thanks,
Benjamin

> Philippe :-)
>
> On 11/27/19 11:23 AM, Yannick Fertre wrote:
> > From: Yannick Fertr=C3=A9 <yannick.fertre@st.com>
> >
> > The pin control must be set to default as soon as possible to
> > establish a good video link between tv & bridge hdmi
> > (encoder mode set is call before encoder enable).
> >
> > Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
> > ---
> >   drivers/gpu/drm/stm/ltdc.c | 24 ++++++++++++++++++------
> >   1 file changed, 18 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
> > index 49ef406..dba8e7f 100644
> > --- a/drivers/gpu/drm/stm/ltdc.c
> > +++ b/drivers/gpu/drm/stm/ltdc.c
> > @@ -435,9 +435,6 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc=
 *crtc,
> >       /* Commit shadow registers =3D update planes at next vblank */
> >       reg_set(ldev->regs, LTDC_SRCR, SRCR_VBR);
> >
> > -     /* Enable LTDC */
> > -     reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN);
> > -
> >       drm_crtc_vblank_on(crtc);
> >   }
> >
> > @@ -451,9 +448,6 @@ static void ltdc_crtc_atomic_disable(struct drm_crt=
c *crtc,
> >
> >       drm_crtc_vblank_off(crtc);
> >
> > -     /* disable LTDC */
> > -     reg_clear(ldev->regs, LTDC_GCR, GCR_LTDCEN);
> > -
> >       /* disable IRQ */
> >       reg_clear(ldev->regs, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE)=
;
> >
> > @@ -1042,9 +1036,13 @@ static const struct drm_encoder_funcs ltdc_encod=
er_funcs =3D {
> >   static void ltdc_encoder_disable(struct drm_encoder *encoder)
> >   {
> >       struct drm_device *ddev =3D encoder->dev;
> > +     struct ltdc_device *ldev =3D ddev->dev_private;
> >
> >       DRM_DEBUG_DRIVER("\n");
> >
> > +     /* Disable LTDC */
> > +     reg_clear(ldev->regs, LTDC_GCR, GCR_LTDCEN);
> > +
> >       /* Set to sleep state the pinctrl whatever type of encoder */
> >       pinctrl_pm_select_sleep_state(ddev->dev);
> >   }
> > @@ -1052,6 +1050,19 @@ static void ltdc_encoder_disable(struct drm_enco=
der *encoder)
> >   static void ltdc_encoder_enable(struct drm_encoder *encoder)
> >   {
> >       struct drm_device *ddev =3D encoder->dev;
> > +     struct ltdc_device *ldev =3D ddev->dev_private;
> > +
> > +     DRM_DEBUG_DRIVER("\n");
> > +
> > +     /* Enable LTDC */
> > +     reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN);
> > +}
> > +
> > +static void ltdc_encoder_mode_set(struct drm_encoder *encoder,
> > +                               struct drm_display_mode *mode,
> > +                               struct drm_display_mode *adjusted_mode)
> > +{
> > +     struct drm_device *ddev =3D encoder->dev;
> >
> >       DRM_DEBUG_DRIVER("\n");
> >
> > @@ -1067,6 +1078,7 @@ static void ltdc_encoder_enable(struct drm_encode=
r *encoder)
> >   static const struct drm_encoder_helper_funcs ltdc_encoder_helper_func=
s =3D {
> >       .disable =3D ltdc_encoder_disable,
> >       .enable =3D ltdc_encoder_enable,
> > +     .mode_set =3D ltdc_encoder_mode_set,
> >   };
> >
> >   static int ltdc_encoder_init(struct drm_device *ddev, struct drm_brid=
ge *bridge)
> >
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