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chromebook_samus: Enable the copy framebuffer 

Update the video driver to support this feature and enable it on samus.
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 430ms to 12ms.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-02 21:12:34 -06:00 committed by Bin Meng
parent 551ca0e647
commit 08b7b65168
2 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
configs/chromebook_samus_defconfig
View File

@ -67,8 +67,8 @@ CONFIG_SPI=y
CONFIG_TPM_TIS_LPC=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
CONFIG_VIDEO_COPY=y
CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
CONFIG_FRAMEBUFFER_VESA_MODE_11A=y
CONFIG_CONSOLE_SCROLL_LINES=5
CONFIG_TPM=y
# CONFIG_GZIP is not set

16
drivers/video/broadwell_igd.c
View File

@ -664,6 +664,7 @@ static int broadwell_igd_probe(struct udevice *dev)
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
bool is_broadwell;
ulong fbbase;
int ret;
if (!ll_boot_init()) {
@ -690,7 +691,8 @@ static int broadwell_igd_probe(struct udevice *dev)
return ret;
/* Use write-combining for the graphics memory, 256MB */
ret = mtrr_add_request(MTRR_TYPE_WRCOMB, plat->base, 256 << 20);
fbbase = IS_ENABLED(CONFIG_VIDEO_COPY) ? plat->copy_base : plat->base;
ret = mtrr_add_request(MTRR_TYPE_WRCOMB, fbbase, 256 << 20);
if (!ret)
ret = mtrr_commit(true);
if (ret && ret != -ENOSYS) {
@ -752,6 +754,17 @@ static int broadwell_igd_ofdata_to_platdata(struct udevice *dev)
return 0;
}
static int broadwell_igd_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;
}
static const struct video_ops broadwell_igd_ops = {
};
@ -766,6 +779,7 @@ U_BOOT_DRIVER(broadwell_igd) = {
.of_match = broadwell_igd_ids,
.ops = &broadwell_igd_ops,
.ofdata_to_platdata = broadwell_igd_ofdata_to_platdata,
.bind = broadwell_igd_bind,
.probe = broadwell_igd_probe,
.priv_auto_alloc_size = sizeof(struct broadwell_igd_priv),
.platdata_auto_alloc_size = sizeof(struct broadwell_igd_plat),