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_with_color_mode() 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.
v2:
- xe: set fbdev_probe in xe_display_driver_set_hooks() (Jani)
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tursulin@xxxxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: "Thomas Hellström" <thomas.hellstrom@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_fbdev.c | 216 ++++++---------------
drivers/gpu/drm/i915/display/intel_fbdev.h | 8 +
drivers/gpu/drm/i915/i915_driver.c | 2 +
drivers/gpu/drm/xe/display/xe_display.c | 4 +
4 files changed, 69 insertions(+), 161 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index abe77ef0bd84..50b8657e55d7 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -37,6 +37,7 @@
#include <linux/tty.h>
#include <linux/vga_switcheroo.h>
+#include <drm/drm_client_setup.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
@@ -175,8 +176,55 @@ static const struct fb_ops intelfb_ops = {
__diag_pop();
-static int intelfb_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
+static int intelfb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
+{
+ if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
+ return 0;
+
+ if (helper->fb->funcs->dirty)
+ return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
+
+ return 0;
+}
+
+static void intelfb_restore(struct drm_fb_helper *fb_helper)
+{
+ struct drm_device *dev = fb_helper->client.dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
+
+ intel_fbdev_invalidate(ifbdev);
+}
+
+static int intelfb_hotplug(struct drm_fb_helper *fb_helper)
+{
+ struct drm_device *dev = fb_helper->client.dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
+ bool send_hpd;
+
+ if (!ifbdev)
+ return -EINVAL;
+
+ mutex_lock(&ifbdev->hpd_lock);
+ send_hpd = !ifbdev->hpd_suspended;
+ ifbdev->hpd_waiting = true;
+ mutex_unlock(&ifbdev->hpd_lock);
+
+ if (!send_hpd || !(ifbdev->vma || dev->fb_helper->deferred_setup))
+ return -EAGAIN;
+
+ return 0;
+}
+
+static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+ .fb_dirty = intelfb_dirty,
+ .fb_restore = intelfb_restore,
+ .fb_hotplug = intelfb_hotplug,
+};
+
+int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = helper->client.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
@@ -246,6 +294,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
goto out_unpin;
}
+ helper->funcs = &intel_fb_helper_funcs;
helper->fb = &fb->base;
info->fbops = &intelfb_ops;
@@ -285,54 +334,6 @@ static int intelfb_create(struct drm_fb_helper *helper,
return ret;
}
-static int intelfb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
-{
- if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
- return 0;
-
- if (helper->fb->funcs->dirty)
- return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
-
- return 0;
-}
-
-static void intelfb_restore(struct drm_fb_helper *fb_helper)
-{
- struct drm_device *dev = fb_helper->client.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
-
- intel_fbdev_invalidate(ifbdev);
-}
-
-static int intelfb_hotplug(struct drm_fb_helper *fb_helper)
-{
- struct drm_device *dev = fb_helper->client.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
- bool send_hpd;
-
- if (!ifbdev)
- return -EINVAL;
-
- mutex_lock(&ifbdev->hpd_lock);
- send_hpd = !ifbdev->hpd_suspended;
- ifbdev->hpd_waiting = true;
- mutex_unlock(&ifbdev->hpd_lock);
-
- if (!send_hpd || !(ifbdev->vma || dev->fb_helper->deferred_setup))
- return -EAGAIN;
-
- return 0;
-}
-
-static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
- .fb_probe = intelfb_create,
- .fb_dirty = intelfb_dirty,
- .fb_restore = intelfb_restore,
- .fb_hotplug = intelfb_hotplug,
-};
-
/*
* Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
* The core display code will have read out the current plane configuration,
@@ -579,100 +580,10 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous
intel_fbdev_hpd_set_suspend(dev_priv, state);
}
-static int intel_fbdev_restore_mode(struct drm_i915_private *dev_priv)
-{
- struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
- struct drm_device *dev = &dev_priv->drm;
- int ret;
-
- if (!ifbdev)
- return -EINVAL;
-
- if (!ifbdev->vma)
- return -ENOMEM;
-
- ret = drm_fb_helper_restore_fbdev_mode_unlocked(dev->fb_helper);
- if (ret)
- return ret;
-
- return 0;
-}
-
-/*
- * Fbdev client and struct drm_client_funcs
- */
-
-static void intel_fbdev_client_unregister(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
- struct drm_device *dev = fb_helper->dev;
- struct pci_dev *pdev = to_pci_dev(dev->dev);
-
- if (fb_helper->info) {
- vga_switcheroo_client_fb_set(pdev, NULL);
- drm_fb_helper_unregister_info(fb_helper);
- } else {
- drm_fb_helper_unprepare(fb_helper);
- drm_client_release(&fb_helper->client);
- kfree(fb_helper);
- }
-}
-
-static int intel_fbdev_client_restore(struct drm_client_dev *client)
-{
- struct drm_i915_private *dev_priv = to_i915(client->dev);
- int ret;
-
- ret = intel_fbdev_restore_mode(dev_priv);
- if (ret)
- return ret;
-
- vga_switcheroo_process_delayed_switch();
-
- return 0;
-}
-
-static int intel_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;
- struct pci_dev *pdev = to_pci_dev(dev->dev);
- int ret;
-
- if (dev->fb_helper)
- return drm_fb_helper_hotplug_event(fb_helper);
-
- ret = drm_fb_helper_init(dev, fb_helper);
- if (ret)
- goto err_drm_err;
-
- ret = drm_fb_helper_initial_config(fb_helper);
- if (ret)
- goto err_drm_fb_helper_fini;
-
- vga_switcheroo_client_fb_set(pdev, fb_helper->info);
-
- return 0;
-
-err_drm_fb_helper_fini:
- drm_fb_helper_fini(fb_helper);
-err_drm_err:
- drm_err(dev, "Failed to setup i915 fbdev emulation (ret=%d)\n", ret);
- return ret;
-}
-
-static const struct drm_client_funcs intel_fbdev_client_funcs = {
- .owner = THIS_MODULE,
- .unregister = intel_fbdev_client_unregister,
- .restore = intel_fbdev_client_restore,
- .hotplug = intel_fbdev_client_hotplug,
-};
-
void intel_fbdev_setup(struct drm_i915_private *i915)
{
struct drm_device *dev = &i915->drm;
struct intel_fbdev *ifbdev;
- struct drm_fb_helper *fb_helper;
int ret;
if (!HAS_DISPLAY(i915))
@@ -684,30 +595,13 @@ void intel_fbdev_setup(struct drm_i915_private *i915)
i915->display.fbdev.fbdev = ifbdev;
INIT_WORK(&i915->display.fbdev.suspend_work, intel_fbdev_suspend_worker);
- mutex_init(&ifbdev->hpd_lock);
+ ret = drmm_mutex_init(dev, &ifbdev->hpd_lock);
+ if (ret)
+ return;
if (!intel_fbdev_init_bios(dev, ifbdev))
ifbdev->preferred_bpp = 32;
- fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
- if (!fb_helper)
- return;
- drm_fb_helper_prepare(dev, fb_helper, ifbdev->preferred_bpp, &intel_fb_helper_funcs);
-
- ret = drm_client_init(dev, &fb_helper->client, "intel-fbdev",
- &intel_fbdev_client_funcs);
- if (ret) {
- drm_err(dev, "Failed to register client: %d\n", ret);
- goto err_drm_fb_helper_unprepare;
- }
-
- drm_client_register(&fb_helper->client);
-
- return;
-
-err_drm_fb_helper_unprepare:
- drm_fb_helper_unprepare(dev->fb_helper);
- mutex_destroy(&ifbdev->hpd_lock);
- kfree(fb_helper);
+ drm_client_setup_with_color_mode(dev, ifbdev->preferred_bpp);
}
struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.h b/drivers/gpu/drm/i915/display/intel_fbdev.h
index 08de2d5b3433..b4184a679595 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.h
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.h
@@ -9,15 +9,23 @@
#include <linux/types.h>
struct drm_device;
+struct drm_fb_helper;
+struct drm_fb_helper_surface_size;
struct drm_i915_private;
struct intel_fbdev;
struct intel_framebuffer;
#ifdef CONFIG_DRM_FBDEV_EMULATION
+int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes);
+#define INTEL_FBDEV_DRIVER_OPS \
+ .fbdev_probe = intel_fbdev_driver_fbdev_probe
void intel_fbdev_setup(struct drm_i915_private *dev_priv);
void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev);
#else
+#define INTEL_FBDEV_DRIVER_OPS \
+ .fbdev_probe = NULL
static inline void intel_fbdev_setup(struct drm_i915_private *dev_priv)
{
}
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index e32766286369..d7c38e8facd2 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1781,6 +1781,8 @@ static const struct drm_driver i915_drm_driver = {
.dumb_create = i915_gem_dumb_create,
.dumb_map_offset = i915_gem_dumb_mmap_offset,
+ INTEL_FBDEV_DRIVER_OPS,
+
.ioctls = i915_ioctls,
.num_ioctls = ARRAY_SIZE(i915_ioctls),
.fops = &i915_driver_fops,
diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 982b9c5b440f..aec1cf45f54f 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -65,6 +65,10 @@ void xe_display_driver_set_hooks(struct drm_driver *driver)
if (!xe_modparam.probe_display)
return;
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ driver->fbdev_probe = intel_fbdev_driver_fbdev_probe;
+#endif
+
driver->driver_features |= DRIVER_MODESET | DRIVER_ATOMIC;
}
--
2.46.0
