[PATCH 77/86] drm/msm: Run DRM default client setup
Thomas Zimmermann
tzimmermann at suse.de
Fri Aug 16 12:23:43 UTC 2024
Rework fbdev probing to support fbdev_probe in struct drm_driver
and remove the old fb_probe callback. Provide an initializer macro
for struct drm_driver that sets the callback according to the kernel
configuration.
Call drm_client_setup() to run the kernel's default client setup
for DRM. Set fbdev_probe in struct drm_driver, so that the client
setup can start the common fbdev client.
The msm driver specifies a preferred color mode of 32. As this
is the default if no format has been given, leave it out entirely.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Cc: Rob Clark <robdclark at gmail.com>
Cc: Abhinav Kumar <quic_abhinavk at quicinc.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Cc: Sean Paul <sean at poorly.run>
Cc: Marijn Suijten <marijn.suijten at somainline.org>
---
drivers/gpu/drm/msm/msm_drv.c | 4 +-
drivers/gpu/drm/msm/msm_drv.h | 13 ++-
drivers/gpu/drm/msm/msm_fbdev.c | 144 ++++++--------------------------
3 files changed, 38 insertions(+), 123 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 9c33f4e3f822..22fe0716d18b 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -10,6 +10,7 @@
#include <linux/of_address.h>
#include <linux/uaccess.h>
+#include <drm/drm_client_setup.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_ioctl.h>
@@ -292,7 +293,7 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
if (priv->kms_init) {
drm_kms_helper_poll_init(ddev);
- msm_fbdev_setup(ddev);
+ drm_client_setup(ddev, NULL);
}
return 0;
@@ -903,6 +904,7 @@ static const struct drm_driver msm_driver = {
#ifdef CONFIG_DEBUG_FS
.debugfs_init = msm_debugfs_init,
#endif
+ MSM_FBDEV_DRIVER_OPS,
.show_fdinfo = msm_show_fdinfo,
.ioctls = msm_ioctls,
.num_ioctls = ARRAY_SIZE(msm_ioctls),
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index be016d7b4ef1..63675a3b7097 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -40,6 +40,9 @@ extern struct fault_attr fail_gem_iova;
# define should_fail(attr, size) 0
#endif
+struct drm_fb_helper;
+struct drm_fb_helper_surface_size;
+
struct msm_kms;
struct msm_gpu;
struct msm_mmu;
@@ -298,11 +301,13 @@ struct drm_framebuffer * msm_alloc_stolen_fb(struct drm_device *dev,
int w, int h, int p, uint32_t format);
#ifdef CONFIG_DRM_FBDEV_EMULATION
-void msm_fbdev_setup(struct drm_device *dev);
+int msm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes);
+#define MSM_FBDEV_DRIVER_OPS \
+ .fbdev_probe = msm_fbdev_driver_fbdev_probe
#else
-static inline void msm_fbdev_setup(struct drm_device *dev)
-{
-}
+#define MSM_FBDEV_DRIVER_OPS \
+ .fbdev_probe = NULL
#endif
struct hdmi;
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index 030bedac632d..c62249b1ab3d 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -65,8 +65,31 @@ static const struct fb_ops msm_fb_ops = {
.fb_destroy = msm_fbdev_fb_destroy,
};
-static int msm_fbdev_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
+static int msm_fbdev_fb_dirty(struct drm_fb_helper *helper,
+ struct drm_clip_rect *clip)
+{
+ struct drm_device *dev = helper->dev;
+ int ret;
+
+ /* Call damage handlers only if necessary */
+ if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
+ return 0;
+
+ if (helper->fb->funcs->dirty) {
+ ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
+ if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct drm_fb_helper_funcs msm_fbdev_helper_funcs = {
+ .fb_dirty = msm_fbdev_fb_dirty,
+};
+
+int msm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = helper->dev;
struct msm_drm_private *priv = dev->dev_private;
@@ -114,6 +137,7 @@ static int msm_fbdev_create(struct drm_fb_helper *helper,
DBG("fbi=%p, dev=%p", fbi, dev);
+ helper->funcs = &msm_fbdev_helper_funcs;
helper->fb = fb;
fbi->fbops = &msm_fb_ops;
@@ -138,119 +162,3 @@ static int msm_fbdev_create(struct drm_fb_helper *helper,
drm_framebuffer_remove(fb);
return ret;
}
-
-static int msm_fbdev_fb_dirty(struct drm_fb_helper *helper,
- struct drm_clip_rect *clip)
-{
- struct drm_device *dev = helper->dev;
- int ret;
-
- /* Call damage handlers only if necessary */
- if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
- return 0;
-
- if (helper->fb->funcs->dirty) {
- ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
- if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
- return ret;
- }
-
- return 0;
-}
-
-static const struct drm_fb_helper_funcs msm_fb_helper_funcs = {
- .fb_probe = msm_fbdev_create,
- .fb_dirty = msm_fbdev_fb_dirty,
-};
-
-/*
- * struct drm_client
- */
-
-static void msm_fbdev_client_unregister(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
-
- if (fb_helper->info) {
- drm_fb_helper_unregister_info(fb_helper);
- } else {
- drm_client_release(&fb_helper->client);
- drm_fb_helper_unprepare(fb_helper);
- kfree(fb_helper);
- }
-}
-
-static int msm_fbdev_client_restore(struct drm_client_dev *client)
-{
- drm_fb_helper_lastclose(client->dev);
-
- return 0;
-}
-
-static int msm_fbdev_client_hotplug(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
- struct drm_device *dev = client->dev;
- int ret;
-
- if (dev->fb_helper)
- return drm_fb_helper_hotplug_event(dev->fb_helper);
-
- ret = drm_fb_helper_init(dev, fb_helper);
- if (ret)
- goto err_drm_err;
-
- if (!drm_drv_uses_atomic_modeset(dev))
- drm_helper_disable_unused_functions(dev);
-
- ret = drm_fb_helper_initial_config(fb_helper);
- if (ret)
- goto err_drm_fb_helper_fini;
-
- return 0;
-
-err_drm_fb_helper_fini:
- drm_fb_helper_fini(fb_helper);
-err_drm_err:
- drm_err(dev, "Failed to setup fbdev emulation (ret=%d)\n", ret);
- return ret;
-}
-
-static const struct drm_client_funcs msm_fbdev_client_funcs = {
- .owner = THIS_MODULE,
- .unregister = msm_fbdev_client_unregister,
- .restore = msm_fbdev_client_restore,
- .hotplug = msm_fbdev_client_hotplug,
-};
-
-/* initialize fbdev helper */
-void msm_fbdev_setup(struct drm_device *dev)
-{
- struct drm_fb_helper *helper;
- int ret;
-
- if (!fbdev)
- return;
-
- drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
- drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n");
-
- helper = kzalloc(sizeof(*helper), GFP_KERNEL);
- if (!helper)
- return;
- drm_fb_helper_prepare(dev, helper, 32, &msm_fb_helper_funcs);
-
- ret = drm_client_init(dev, &helper->client, "fbdev", &msm_fbdev_client_funcs);
- if (ret) {
- drm_err(dev, "Failed to register client: %d\n", ret);
- goto err_drm_fb_helper_unprepare;
- }
-
- drm_client_register(&helper->client);
-
- return;
-
-err_drm_fb_helper_unprepare:
- drm_fb_helper_unprepare(helper);
- kfree(helper);
-}
--
2.46.0
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