diff mbox series

[v1,1/2] drm/panel: simple: add Multi-Innotechnology MI1010AIT-1CP1

Message ID 20210805043702.24715-1-o.rempel@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series [v1,1/2] drm/panel: simple: add Multi-Innotechnology MI1010AIT-1CP1 | expand

Commit Message

Oleksij Rempel Aug. 5, 2021, 4:37 a.m. UTC 
From: Sam Ravnborg <sam@ravnborg.org>

The Multi Innotechnology is a 10.1" 1280x800 panel.

The datasheet did not specify specific values for sync, back, front porch.
The values are a best guess based on values for similar panels.

Co-Developed-by: Sam Ravnborg <sam@ravnborg.org>
Co-Developed-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 drivers/gpu/drm/panel/panel-simple.c | 34 ++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

Comments

Ahmad Fatoum Aug. 5, 2021, 5:52 a.m. UTC | #1 
Hello Oleksij,

On 05.08.21 06:37, Oleksij Rempel wrote:
> From: Sam Ravnborg <sam@ravnborg.org>
> 
> The Multi Innotechnology is a 10.1" 1280x800 panel.
> 
> The datasheet did not specify specific values for sync, back, front porch.
> The values are a best guess based on values for similar panels.
> 
> Co-Developed-by: Sam Ravnborg <sam@ravnborg.org>
> Co-Developed-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
> Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 34 ++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 21939d4352cf..fda79a986d12 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -3033,6 +3033,37 @@ static const struct panel_desc mitsubishi_aa070mc01 = {
>  	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
>  };
>  
> +static const struct display_timing multi_inno_mi1010ait_1cp_timing = {
> +	.pixelclock = { 68900000, 70000000, 73400000 },
> +	.hactive = { 1280, 1280, 1280 },
> +	.hfront_porch = { 30, 60, 71 },
> +	.hback_porch = { 30, 60, 71 },
> +	.hsync_len = { 10, 10, 48 },
> +	.vactive = { 800, 800, 800 },
> +	.vfront_porch = { 5, 10, 10 },
> +	.vback_porch = { 5, 10, 10 },
> +	.vsync_len = { 5, 6, 13 },
> +	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
> +		 DISPLAY_FLAGS_DE_HIGH,
> +};

Here you specify DISPLAY_FLAGS_DE_HIGH.

> +
> +static const struct panel_desc multi_inno_mi1010ait_1cp = {
> +	.timings = &multi_inno_mi1010ait_1cp_timing,
> +	.num_timings = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 217,
> +		.height = 136,
> +	},
> +	.delay = {
> +		.enable = 50,
> +		.disable = 50,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH,

And here DRM_BUS_FLAG_DE_HIGH. I see that some other panels do this too
and some only specify one of them. Do you know if they are redundant
or one of them is ignored?

Cheers,
Ahmad

> +	.connector_type = DRM_MODE_CONNECTOR_LVDS,
> +};
> +
>  static const struct display_timing nec_nl12880bc20_05_timing = {
>  	.pixelclock = { 67000000, 71000000, 75000000 },
>  	.hactive = { 1280, 1280, 1280 },
> @@ -4464,6 +4495,9 @@ static const struct of_device_id platform_of_match[] = {
>  	}, {
>  		.compatible = "mitsubishi,aa070mc01-ca1",
>  		.data = &mitsubishi_aa070mc01,
> +	}, {
> +		.compatible = "multi-inno,mi1010ait-1cp",
> +		.data = &multi_inno_mi1010ait_1cp,
>  	}, {
>  		.compatible = "nec,nl12880bc20-05",
>  		.data = &nec_nl12880bc20_05,
>
Oleksij Rempel Aug. 5, 2021, 10:08 a.m. UTC | #2 
On Thu, Aug 05, 2021 at 07:52:24AM +0200, Ahmad Fatoum wrote:
> Hello Oleksij,
> 
> On 05.08.21 06:37, Oleksij Rempel wrote:
> > From: Sam Ravnborg <sam@ravnborg.org>
> > 
> > The Multi Innotechnology is a 10.1" 1280x800 panel.
> > 
> > The datasheet did not specify specific values for sync, back, front porch.
> > The values are a best guess based on values for similar panels.
> > 
> > Co-Developed-by: Sam Ravnborg <sam@ravnborg.org>
> > Co-Developed-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
> > Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
> > Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
> > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> > ---
> >  drivers/gpu/drm/panel/panel-simple.c | 34 ++++++++++++++++++++++++++++
> >  1 file changed, 34 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> > index 21939d4352cf..fda79a986d12 100644
> > --- a/drivers/gpu/drm/panel/panel-simple.c
> > +++ b/drivers/gpu/drm/panel/panel-simple.c
> > @@ -3033,6 +3033,37 @@ static const struct panel_desc mitsubishi_aa070mc01 = {
> >  	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
> >  };
> >  
> > +static const struct display_timing multi_inno_mi1010ait_1cp_timing = {
> > +	.pixelclock = { 68900000, 70000000, 73400000 },
> > +	.hactive = { 1280, 1280, 1280 },
> > +	.hfront_porch = { 30, 60, 71 },
> > +	.hback_porch = { 30, 60, 71 },
> > +	.hsync_len = { 10, 10, 48 },
> > +	.vactive = { 800, 800, 800 },
> > +	.vfront_porch = { 5, 10, 10 },
> > +	.vback_porch = { 5, 10, 10 },
> > +	.vsync_len = { 5, 6, 13 },
> > +	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
> > +		 DISPLAY_FLAGS_DE_HIGH,
> > +};
> 
> Here you specify DISPLAY_FLAGS_DE_HIGH.
> 
> > +
> > +static const struct panel_desc multi_inno_mi1010ait_1cp = {
> > +	.timings = &multi_inno_mi1010ait_1cp_timing,
> > +	.num_timings = 1,
> > +	.bpc = 8,
> > +	.size = {
> > +		.width = 217,
> > +		.height = 136,
> > +	},
> > +	.delay = {
> > +		.enable = 50,
> > +		.disable = 50,
> > +	},
> > +	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> > +	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
> 
> And here DRM_BUS_FLAG_DE_HIGH. I see that some other panels do this too
> and some only specify one of them. Do you know if they are redundant
> or one of them is ignored?

Hmm... there is a drm_bus_flags_from_videomode():
        if (vm->flags & DISPLAY_FLAGS_DE_HIGH)
                *bus_flags |= DRM_BUS_FLAG_DE_HIGH;


It looks like for DPI panel it would be set automatically. This
function is not execute in case of LVDS panel.

Regards,
Oleksij
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 21939d4352cf..fda79a986d12 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3033,6 +3033,37 @@  static const struct panel_desc mitsubishi_aa070mc01 = {
 	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
 };
 
+static const struct display_timing multi_inno_mi1010ait_1cp_timing = {
+	.pixelclock = { 68900000, 70000000, 73400000 },
+	.hactive = { 1280, 1280, 1280 },
+	.hfront_porch = { 30, 60, 71 },
+	.hback_porch = { 30, 60, 71 },
+	.hsync_len = { 10, 10, 48 },
+	.vactive = { 800, 800, 800 },
+	.vfront_porch = { 5, 10, 10 },
+	.vback_porch = { 5, 10, 10 },
+	.vsync_len = { 5, 6, 13 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH,
+};
+
+static const struct panel_desc multi_inno_mi1010ait_1cp = {
+	.timings = &multi_inno_mi1010ait_1cp_timing,
+	.num_timings = 1,
+	.bpc = 8,
+	.size = {
+		.width = 217,
+		.height = 136,
+	},
+	.delay = {
+		.enable = 50,
+		.disable = 50,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct display_timing nec_nl12880bc20_05_timing = {
 	.pixelclock = { 67000000, 71000000, 75000000 },
 	.hactive = { 1280, 1280, 1280 },
@@ -4464,6 +4495,9 @@  static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "mitsubishi,aa070mc01-ca1",
 		.data = &mitsubishi_aa070mc01,
+	}, {
+		.compatible = "multi-inno,mi1010ait-1cp",
+		.data = &multi_inno_mi1010ait_1cp,
 	}, {
 		.compatible = "nec,nl12880bc20-05",
 		.data = &nec_nl12880bc20_05,