On Mon, Sep 8, 2014 at 4:43 AM, Boris BREZILLON
<boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote:
> The Atmel HLCDC (HLCD Controller) IP available on some Atmel SoCs (i.e.
> at91sam9n12, at91sam9x5 family or sama5d3 family) provides a display
> controller device.
>
> This display controller supports at least one primary plane and might
> provide several overlays and an hardware cursor depending on the IP
> version.
>
> At the moment, this driver only implements an RGB connector to interface
> with LCD panels, but support for other kind of external devices might be
> added later.
>
> Signed-off-by: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> Tested-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx>
A few small comments below, but with those addressed it has my
Reviewed-by: Rob Clark <robdclark@xxxxxxxxx>
> ---
> drivers/gpu/drm/Kconfig | 2 +
> drivers/gpu/drm/Makefile | 1 +
> drivers/gpu/drm/atmel-hlcdc/Kconfig | 13 +
> drivers/gpu/drm/atmel-hlcdc/Makefile | 7 +
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 286 ++++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 488 +++++++++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 224 ++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c | 656 ++++++++++++++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h | 403 +++++++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 476 +++++++++++++
> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 836 +++++++++++++++++++++++
> 11 files changed, 3392 insertions(+)
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/Kconfig
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/Makefile
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
> create mode 100644 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
>
[snip]
> +
> +/**
> + * Atmel HLCDC plane rotation enum
> + *
> + * TODO: export DRM_ROTATE_XX macros defined by omap driver and use them
> + * instead of defining this enum.
> + */
> +enum atmel_hlcdc_plane_rotation {
> + ATMEL_HLCDC_PLANE_NO_ROTATION,
> + ATMEL_HLCDC_PLANE_90DEG_ROTATION,
> + ATMEL_HLCDC_PLANE_180DEG_ROTATION,
> + ATMEL_HLCDC_PLANE_270DEG_ROTATION,
> +};
DRM_ROTATE_* are already in drm_crtc.h
[snip]
> +static int atmel_hlcdc_rgb_mode_valid(struct drm_connector *connector,
> + struct drm_display_mode *mode)
> +{
> + return MODE_OK;
> +}
your _mode_valid() should perhaps somehow check the constraints in
atmel_hlcdc_crtc_mode_set()? This way invalid modes get filtered out
earlier..
[snip]
> +static struct atmel_hlcdc_plane_properties *
> +atmel_hlcdc_plane_create_properties(struct drm_device *dev)
> +{
> + struct atmel_hlcdc_plane_properties *props;
> + const struct drm_prop_enum_list rotations[] = {
> + { ATMEL_HLCDC_PLANE_NO_ROTATION, "rotate-0" },
> + { ATMEL_HLCDC_PLANE_90DEG_ROTATION, "rotate-90" },
> + { ATMEL_HLCDC_PLANE_180DEG_ROTATION, "rotate-180" },
> + { ATMEL_HLCDC_PLANE_270DEG_ROTATION, "rotate-270" },
> + };
> +
you could just use drm_mode_create_rotation_property() now
> + props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL);
> + if (!props)
> + return ERR_PTR(-ENOMEM);
> +
> + props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255);
> + if (!props->alpha)
> + return ERR_PTR(-ENOMEM);
> +
> + props->rotation = drm_property_create_enum(dev, 0, "rotation",
> + rotations,
> + ARRAY_SIZE(rotations));
> + return props;
> +}
> +
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