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authorSimon Glass <sjg@chromium.org>2020-07-02 21:12:35 -0600
committerBin Meng <bmeng.cn@gmail.com>2020-07-09 12:33:24 +0800
commita67b0db24efd3627e2e057cdab1130743688124d (patch)
tree26fb9a88d3e2d60c165474b5de746c75b8a35436 /drivers
parent08b7b65168ed9b07c0f216178be068228d13b98e (diff)
chromebook_link: Enable the copy framebuffer
Update the video driver to support this feature and enable it on link. Also remove the multi-line scrolling since normal scrolling is fast enough now. With this change, the time taken to print the environment to the display without CONFIG_CONSOLE_SCROLL_LINES is reduced from about 930ms to 29ms. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/ivybridge_igd.c26
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/video/ivybridge_igd.c b/drivers/video/ivybridge_igd.c
index 4c57e311d1..2587f53ac1 100644
--- a/drivers/video/ivybridge_igd.c
+++ b/drivers/video/ivybridge_igd.c
@@ -11,6 +11,7 @@
#include <log.h>
#include <pci_rom.h>
#include <vbe.h>
+#include <video.h>
#include <asm/intel_regs.h>
#include <asm/io.h>
#include <asm/mtrr.h>
@@ -722,7 +723,6 @@ static int gma_func0_init(struct udevice *dev)
{
struct udevice *nbridge;
void *gtt_bar;
- ulong base;
u32 reg32;
int ret;
int rev;
@@ -742,11 +742,6 @@ static int gma_func0_init(struct udevice *dev)
reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
dm_pci_write_config32(dev, PCI_COMMAND, reg32);
- /* Use write-combining for the graphics memory, 256MB */
- base = dm_pci_read_bar32(dev, 2);
- mtrr_add_request(MTRR_TYPE_WRCOMB, base, 256 << 20);
- mtrr_commit(true);
-
gtt_bar = (void *)(ulong)dm_pci_read_bar32(dev, 0);
debug("GT bar %p\n", gtt_bar);
ret = gma_pm_init_pre_vbios(gtt_bar, rev);
@@ -758,6 +753,8 @@ static int gma_func0_init(struct udevice *dev)
static int bd82x6x_video_probe(struct udevice *dev)
{
+ struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
+ ulong fbbase;
void *gtt_bar;
int ret, rev;
@@ -774,6 +771,22 @@ static int bd82x6x_video_probe(struct udevice *dev)
if (ret)
return ret;
+ /* Use write-combining for the graphics memory, 256MB */
+ fbbase = IS_ENABLED(CONFIG_VIDEO_COPY) ? plat->copy_base : plat->base;
+ mtrr_add_request(MTRR_TYPE_WRCOMB, fbbase, 256 << 20);
+ mtrr_commit(true);
+
+ return 0;
+}
+
+static int bd82x6x_video_bind(struct udevice *dev)
+{
+ struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
+
+ /* Set the maximum supported resolution */
+ uc_plat->size = 2560 * 1600 * 4;
+ log_debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
+
return 0;
}
@@ -786,5 +799,6 @@ U_BOOT_DRIVER(bd82x6x_video) = {
.name = "bd82x6x_video",
.id = UCLASS_VIDEO,
.of_match = bd82x6x_video_ids,
+ .bind = bd82x6x_video_bind,
.probe = bd82x6x_video_probe,
};