On Mon, Jul 13, 2015 at 12:13:57PM +0530, Archit Taneja wrote:
Remove FB_* config options since the driver doesn't call any fbdev functions directly.
Remove FB_KMS_HELPER as this would now be selected by the top level FBDEV_EMULATION config option. If the fbdev emulation isn't selected, the drm_fb_helper functions will be stubbed out.
The code relying on DEFERRED_IO can't be stubbed out using drm_fb_helper functions. This is because the deferred io members in fbdev core structs are defined based on whether FB_DEFERRED_IO is defined or not.
For now, wrap around deferred io code with an #ifdef check for CONFIG_DEFERRED_IO. We could consider creating stub fb helper functions here, but this would require some changes in the core fbdev structs.
Yeah if more drivers grow a ->dirty callback that does something we'd probably want to pull all that code out of qxl/udl into core fbdev. i915 now also has a dirty callback, but for fbcon we're going with a slightly different options: Since all our frontbuffer dirtying are for optional features we just disable them right now.
Anyway just an idea for future patches when someone works in this area. For now I think we simply have to select the relevant options if FBDEV emulation is enabled.
Cc: David Airlie airlied@linux.ie Cc: Frediano Ziglio fziglio@redhat.com Cc: Maarten Lankhorst maarten.lankhorst@canonical.com
Signed-off-by: Archit Taneja architt@codeaurora.org
drivers/gpu/drm/qxl/Kconfig | 5 ----- drivers/gpu/drm/qxl/qxl_fb.c | 4 ++++ 2 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/qxl/Kconfig b/drivers/gpu/drm/qxl/Kconfig index 38c2bb7..da45b11 100644 --- a/drivers/gpu/drm/qxl/Kconfig +++ b/drivers/gpu/drm/qxl/Kconfig @@ -1,12 +1,7 @@ config DRM_QXL tristate "QXL virtual GPU" depends on DRM && PCI
- select FB_SYS_FILLRECT
- select FB_SYS_COPYAREA
- select FB_SYS_IMAGEBLIT
- select FB_DEFERRED_IO
I.e. select FB_DEFERRED_IO if DRM_FBDEV_EMULATION
select DRM_KMS_HELPER
- select DRM_KMS_FB_HELPER select DRM_TTM select CRC32 help
diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index 41c422f..9391dfe 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -163,6 +163,7 @@ static void qxl_dirty_update(struct qxl_fbdev *qfbdev, schedule_work(&qdev->fb_work); }
+#ifdef CONFIG_FB_DEFERRED_IO
and using CONFIG_DMR_FBDEV_EMULATION here instead. Same for udl changes. -Daniel
static void qxl_deferred_io(struct fb_info *info, struct list_head *pagelist) { @@ -191,6 +192,7 @@ static struct fb_deferred_io qxl_defio = { .delay = QXL_DIRTY_DELAY, .deferred_io = qxl_deferred_io, }; +#endif
static void qxl_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) @@ -420,8 +422,10 @@ static int qxlfb_create(struct qxl_fbdev *qfbdev, goto out_destroy_fbi; }
+#ifdef CONFIG_FB_DEFERRED_IO info->fbdefio = &qxl_defio; fb_deferred_io_init(info); +#endif
qdev->fbdev_info = info; qdev->fbdev_qfb = &qfbdev->qfb; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation