[PATCH 3/5] drm: shmobile: Switch to drm_crtc_init_with_planes()

Geert Uytterhoeven
2023-03-31T14:53:22Z

The SH-Mobile DRM driver uses the legacy drm_crtc_init(), which
advertizes only the formats in safe_modeset_formats[] (XR24 and AR24) as
being supported.

Switch to drm_crtc_init_with_planes(), and advertize all supported
(A)RGB modes, so we can use RGB565 as the default mode for the console.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
drivers/gpu/drm/shmobile/shmob_drm_crtc.c | 30 +++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
index 08dc1428aa16caf0..11dd2bc803e7cb62 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
@@ -18,6 +18,7 @@
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_modeset_helper.h>
#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_vblank.h>
@@ -478,16 +479,41 @@ static const struct drm_crtc_funcs crtc_funcs = {
.disable_vblank = shmob_drm_disable_vblank,
};

+static const uint32_t modeset_formats[] = {
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_XRGB8888,
+};
+
+static const struct drm_plane_funcs primary_plane_funcs = {
+ DRM_PLANE_NON_ATOMIC_FUNCS,
+};
+
int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
{
struct drm_crtc *crtc = &sdev->crtc.crtc;
+ struct drm_plane *primary;
int ret;

sdev->crtc.dpms = DRM_MODE_DPMS_OFF;

- ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
- if (ret < 0)
+ primary = __drm_universal_plane_alloc(sdev->ddev, sizeof(*primary), 0,
+ 0, &primary_plane_funcs,
+ modeset_formats,
+ ARRAY_SIZE(modeset_formats),
+ NULL, DRM_PLANE_TYPE_PRIMARY,
+ NULL);
+ if (IS_ERR(primary))
+ return PTR_ERR(primary);
+
+ ret = drm_crtc_init_with_planes(sdev->ddev, crtc, primary, NULL,
+ &crtc_funcs, NULL);
+ if (ret < 0) {
+ drm_plane_cleanup(primary);
+ kfree(primary);
return ret;
+ }

drm_crtc_helper_add(crtc, &crtc_helper_funcs);

--
2.34.1