linux-kernel - [PATCH v6 3/9] drm/omap: Add ovl checking funcs to dispc

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Message-Id: <20211018142842.2511200-4-narmstrong@baylibre.com>
Date:   Mon, 18 Oct 2021 16:28:36 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     tomba@...nel.org
Cc:     linux-omap@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, khilman@...libre.com,
        Benoit Parrot <bparrot@...com>,
        Neil Armstrong <narmstrong@...libre.com>
Subject: [PATCH v6 3/9] drm/omap: Add ovl checking funcs to dispc_ops

From: Benoit Parrot <bparrot@...com>

In order to be able to dynamically assign overlays to planes we need to
be able to asses the overlay capabilities.

Add a helper function to be able to retrieve the supported capabilities
of an overlay.

And export the function to check if a fourcc is supported on a given
overlay.

Signed-off-by: Benoit Parrot <bparrot@...com>
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 drivers/gpu/drm/omapdrm/dss/dispc.c | 9 +++++++--
 drivers/gpu/drm/omapdrm/dss/dss.h   | 3 +++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c
index 5ac90ba6b76d..dd36db75b4b4 100644
--- a/drivers/gpu/drm/omapdrm/dss/dispc.c
+++ b/drivers/gpu/drm/omapdrm/dss/dispc.c
@@ -1281,8 +1281,8 @@ static u32 dispc_ovl_get_burst_size(struct dispc_device *dispc,
 	return dispc->feat->burst_size_unit * 8;
 }
 
-static bool dispc_ovl_color_mode_supported(struct dispc_device *dispc,
-					   enum omap_plane_id plane, u32 fourcc)
+bool dispc_ovl_color_mode_supported(struct dispc_device *dispc,
+				    enum omap_plane_id plane, u32 fourcc)
 {
 	const u32 *modes;
 	unsigned int i;
@@ -2489,6 +2489,11 @@ static int dispc_ovl_calc_scaling_44xx(struct dispc_device *dispc,
 	return 0;
 }
 
+enum omap_overlay_caps dispc_ovl_get_caps(struct dispc_device *dispc, enum omap_plane_id plane)
+{
+	return dispc->feat->overlay_caps[plane];
+}
+
 #define DIV_FRAC(dividend, divisor) \
 	((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100))
 
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.h b/drivers/gpu/drm/omapdrm/dss/dss.h
index 14c39f7c3988..4ff02fbc0e71 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.h
+++ b/drivers/gpu/drm/omapdrm/dss/dss.h
@@ -398,6 +398,9 @@ const u32 *dispc_ovl_get_color_modes(struct dispc_device *dispc,
 					    enum omap_plane_id plane);
 
 void dispc_ovl_get_max_size(struct dispc_device *dispc, u16 *width, u16 *height);
+bool dispc_ovl_color_mode_supported(struct dispc_device *dispc,
+				    enum omap_plane_id plane, u32 fourcc);
+enum omap_overlay_caps dispc_ovl_get_caps(struct dispc_device *dispc, enum omap_plane_id plane);
 
 u32 dispc_read_irqstatus(struct dispc_device *dispc);
 void dispc_clear_irqstatus(struct dispc_device *dispc, u32 mask);
-- 
2.25.1