| Message ID | 1458062508-210201-6-git-send-email-agraf@suse.de |
|---|---|
| State | Superseded |
| Delegated to: | Tom Rini |
| Headers | show |
Am 15.03.2016 um 18:21 schrieb Alexander Graf: > The bcm2835 frame buffer is in RAM, so we can easily map it as cached and gain > all the glorious performance boost that brings with it. > > Signed-off-by: Alexander Graf <agraf@suse.de> > --- > drivers/video/bcm2835.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c > index bff1fcb..fe49f2e 100644 > --- a/drivers/video/bcm2835.c > +++ b/drivers/video/bcm2835.c > @@ -106,6 +106,12 @@ void lcd_ctrl_init(void *lcdbase) > > gd->fb_base = bus_to_phys( > msg_setup->allocate_buffer.body.resp.fb_address); > + > + /* Enable dcache for the frame buffer */ > + mmu_set_region_dcache_behaviour(gd->fb_base, Spaces vs. tab. Andreas > + ALIGN(PAGE_SIZE, msg_setup->allocate_buffer.body.resp.fb_size), > + DCACHE_WRITEBACK); > + lcd_set_flush_dcache(1); > } > > void lcd_enable(void) >
On 16.03.16 19:00, Andreas Färber wrote: > Am 15.03.2016 um 18:21 schrieb Alexander Graf: >> The bcm2835 frame buffer is in RAM, so we can easily map it as cached and gain >> all the glorious performance boost that brings with it. >> >> Signed-off-by: Alexander Graf <agraf@suse.de> >> --- >> drivers/video/bcm2835.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c >> index bff1fcb..fe49f2e 100644 >> --- a/drivers/video/bcm2835.c >> +++ b/drivers/video/bcm2835.c >> @@ -106,6 +106,12 @@ void lcd_ctrl_init(void *lcdbase) >> >> gd->fb_base = bus_to_phys( >> msg_setup->allocate_buffer.body.resp.fb_address); >> + >> + /* Enable dcache for the frame buffer */ >> + mmu_set_region_dcache_behaviour(gd->fb_base, > > Spaces vs. tab. If the rest of the patches are good in v2, I'd appreciate if whoever applies this code could fix that up :). Alex
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c index bff1fcb..fe49f2e 100644 --- a/drivers/video/bcm2835.c +++ b/drivers/video/bcm2835.c @@ -106,6 +106,12 @@ void lcd_ctrl_init(void *lcdbase) gd->fb_base = bus_to_phys( msg_setup->allocate_buffer.body.resp.fb_address); + + /* Enable dcache for the frame buffer */ + mmu_set_region_dcache_behaviour(gd->fb_base, + ALIGN(PAGE_SIZE, msg_setup->allocate_buffer.body.resp.fb_size), + DCACHE_WRITEBACK); + lcd_set_flush_dcache(1); } void lcd_enable(void)
The bcm2835 frame buffer is in RAM, so we can easily map it as cached and gain all the glorious performance boost that brings with it. Signed-off-by: Alexander Graf <agraf@suse.de> --- drivers/video/bcm2835.c | 6 ++++++ 1 file changed, 6 insertions(+)