[PATCH 21/22] drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()
Noralf Trønnes
noralf at tronnes.org
Sat Nov 4 13:04:15 UTC 2017
Use drm_fb_cma_fbdev_init_with_funcs() and drm_fb_cma_fbdev_fini() which
relies on the fact that drm_device holds a pointer to the drm_fb_helper
structure. This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.
Remove todo entry.
Cc: David Lechner <david at lechnology.com>
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
Documentation/gpu/todo.rst | 5 ----
drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 37 ++++-------------------------
drivers/gpu/drm/tinydrm/mi0283qt.c | 3 ++-
drivers/gpu/drm/tinydrm/st7586.c | 3 ++-
include/drm/tinydrm/tinydrm.h | 3 ---
5 files changed, 9 insertions(+), 42 deletions(-)
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 6bce1beafabe..6dbcd4a90015 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -395,11 +395,6 @@ those drivers as simple as possible, so lots of room for refactoring:
one of the ideas for having a shared dsi/dbi helper, abstracting away the
transport details more.
-- tinydrm_lastclose could be drm_fb_helper_lastclose. Only thing we need
- for that is to store the drm_fb_helper pointer somewhere in
- drm_device->mode_config. And then we could roll that out to all the
- drivers.
-
- tinydrm_gem_cma_prime_import_sg_table should probably go into the cma
helpers, as a _vmapped variant (since not every driver needs the vmap).
And tinydrm_gem_cma_free_object could the be merged into
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
index bd7b82824a34..4c6616278c48 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
@@ -10,6 +10,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/tinydrm/tinydrm.h>
#include <linux/device.h>
@@ -35,23 +36,6 @@
* and registers the DRM device using devm_tinydrm_register().
*/
-/**
- * tinydrm_lastclose - DRM lastclose helper
- * @drm: DRM device
- *
- * This function ensures that fbdev is restored when drm_lastclose() is called
- * on the last drm_release(). Drivers can use this as their
- * &drm_driver->lastclose callback.
- */
-void tinydrm_lastclose(struct drm_device *drm)
-{
- struct tinydrm_device *tdev = drm->dev_private;
-
- DRM_DEBUG_KMS("\n");
- drm_fbdev_cma_restore_mode(tdev->fbdev_cma);
-}
-EXPORT_SYMBOL(tinydrm_lastclose);
-
/**
* tinydrm_gem_cma_prime_import_sg_table - Produce a CMA GEM object from
* another driver's scatter/gather table of pinned pages
@@ -214,35 +198,24 @@ EXPORT_SYMBOL(devm_tinydrm_init);
static int tinydrm_register(struct tinydrm_device *tdev)
{
struct drm_device *drm = tdev->drm;
- int bpp = drm->mode_config.preferred_depth;
- struct drm_fbdev_cma *fbdev;
int ret;
ret = drm_dev_register(tdev->drm, 0);
if (ret)
return ret;
- fbdev = drm_fbdev_cma_init_with_funcs(drm, bpp ? bpp : 32,
- drm->mode_config.num_connector,
- tdev->fb_funcs);
- if (IS_ERR(fbdev))
- DRM_ERROR("Failed to initialize fbdev: %ld\n", PTR_ERR(fbdev));
- else
- tdev->fbdev_cma = fbdev;
+ ret = drm_fb_cma_fbdev_init_with_funcs(drm, 0, 0, tdev->fb_funcs);
+ if (ret)
+ DRM_ERROR("Failed to initialize fbdev: %d\n", ret);
return 0;
}
static void tinydrm_unregister(struct tinydrm_device *tdev)
{
- struct drm_fbdev_cma *fbdev_cma = tdev->fbdev_cma;
-
drm_atomic_helper_shutdown(tdev->drm);
- /* don't restore fbdev in lastclose, keep pipeline disabled */
- tdev->fbdev_cma = NULL;
+ drm_fb_cma_fbdev_fini(tdev->drm);
drm_dev_unregister(tdev->drm);
- if (fbdev_cma)
- drm_fbdev_cma_fini(fbdev_cma);
}
static void devm_tinydrm_register_release(void *data)
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
index 70ae4f76f455..674d407640be 100644
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -9,6 +9,7 @@
* (at your option) any later version.
*/
+#include <drm/drm_fb_helper.h>
#include <drm/drm_modeset_helper.h>
#include <drm/tinydrm/ili9341.h>
#include <drm/tinydrm/mipi-dbi.h>
@@ -140,7 +141,7 @@ static struct drm_driver mi0283qt_driver = {
DRIVER_ATOMIC,
.fops = &mi0283qt_fops,
TINYDRM_GEM_DRIVER_OPS,
- .lastclose = tinydrm_lastclose,
+ .lastclose = drm_fb_helper_lastclose,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "mi0283qt",
.desc = "Multi-Inno MI0283QT",
diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c
index 0a2c60da5c0e..5aebfceb740e 100644
--- a/drivers/gpu/drm/tinydrm/st7586.c
+++ b/drivers/gpu/drm/tinydrm/st7586.c
@@ -17,6 +17,7 @@
#include <linux/spi/spi.h>
#include <video/mipi_display.h>
+#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/tinydrm/mipi-dbi.h>
#include <drm/tinydrm/tinydrm-helpers.h>
@@ -320,7 +321,7 @@ static struct drm_driver st7586_driver = {
DRIVER_ATOMIC,
.fops = &st7586_fops,
TINYDRM_GEM_DRIVER_OPS,
- .lastclose = tinydrm_lastclose,
+ .lastclose = drm_fb_helper_lastclose,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "st7586",
.desc = "Sitronix ST7586",
diff --git a/include/drm/tinydrm/tinydrm.h b/include/drm/tinydrm/tinydrm.h
index fb0d86600ea3..584be2bcade1 100644
--- a/include/drm/tinydrm/tinydrm.h
+++ b/include/drm/tinydrm/tinydrm.h
@@ -19,14 +19,12 @@
* @drm: DRM device
* @pipe: Display pipe structure
* @dirty_lock: Serializes framebuffer flushing
- * @fbdev_cma: CMA fbdev structure
* @fb_funcs: Framebuffer functions used when creating framebuffers
*/
struct tinydrm_device {
struct drm_device *drm;
struct drm_simple_display_pipe pipe;
struct mutex dirty_lock;
- struct drm_fbdev_cma *fbdev_cma;
const struct drm_framebuffer_funcs *fb_funcs;
};
@@ -79,7 +77,6 @@ pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
.type = DRM_MODE_TYPE_DRIVER, \
.clock = 1 /* pass validation */
-void tinydrm_lastclose(struct drm_device *drm);
void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj);
struct drm_gem_object *
tinydrm_gem_cma_prime_import_sg_table(struct drm_device *drm,
--
2.14.2
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