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authorNicolas Boichat <drinkcat@chromium.org>2019-08-06 08:23:54 +0800
committerMartin Roth <martinroth@google.com>2019-08-08 03:20:06 +0000
commit564720f2c8b6c37aeceb10bd1a4064165ebdafb0 (patch)
treea83154135717ceb84c2338e3cfb914e00c107035 /payloads/libpayload/drivers
parent87f265b210e02a7aefb6da0bae61c2b0d9239a3e (diff)
downloadcoreboot-564720f2c8b6c37aeceb10bd1a4064165ebdafb0.tar.xz
libpayload: cbgfx: Allow rotation of the display
Sometimes the display native orientation does not match the device default orientation, so allow rotation of the framebuffer before it is displayed on screen. set_pixel now take coordinates in the rotated coordinate system, and converts the coordinates before writing to the framebuffer. Also, screen.size now matches the rotated system (_not_ the framebuffer size). BUG=b:132049716 TEST=Boot krane, see that FW screen is orientation properly. Change-Id: If9316c0ce33c17057372ef5995a2c68de4f11f02 Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34732 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Christian Walter <christian.walter@9elements.com>
Diffstat (limited to 'payloads/libpayload/drivers')
-rw-r--r--payloads/libpayload/drivers/video/graphics.c39
1 files changed, 35 insertions, 4 deletions
diff --git a/payloads/libpayload/drivers/video/graphics.c b/payloads/libpayload/drivers/video/graphics.c
index 85a8642c72..6b5664bbcf 100644
--- a/payloads/libpayload/drivers/video/graphics.c
+++ b/payloads/libpayload/drivers/video/graphics.c
@@ -129,8 +129,30 @@ static inline void set_pixel(struct vector *coord, uint32_t color)
{
const int bpp = fbinfo->bits_per_pixel;
const int bpl = fbinfo->bytes_per_line;
+ struct vector rcoord;
int i;
- uint8_t * const pixel = fbaddr + coord->y * bpl + coord->x * bpp / 8;
+
+ switch (fbinfo->orientation) {
+ case CB_FB_ORIENTATION_NORMAL:
+ default:
+ rcoord.x = coord->x;
+ rcoord.y = coord->y;
+ break;
+ case CB_FB_ORIENTATION_BOTTOM_UP:
+ rcoord.x = screen.size.width - 1 - coord->x;
+ rcoord.y = screen.size.height - 1 - coord->y;
+ break;
+ case CB_FB_ORIENTATION_LEFT_UP:
+ rcoord.x = coord->y;
+ rcoord.y = screen.size.width - 1 - coord->x;
+ break;
+ case CB_FB_ORIENTATION_RIGHT_UP:
+ rcoord.x = screen.size.height - 1 - coord->y;
+ rcoord.y = coord->x;
+ break;
+ }
+
+ uint8_t * const pixel = fbaddr + rcoord.y * bpl + rcoord.x * bpp / 8;
for (i = 0; i < bpp / 8; i++)
pixel[i] = (color >> (i * 8));
}
@@ -152,8 +174,17 @@ static int cbgfx_init(void)
if (!fbaddr)
return CBGFX_ERROR_FRAMEBUFFER_ADDR;
- screen.size.width = fbinfo->x_resolution;
- screen.size.height = fbinfo->y_resolution;
+ switch (fbinfo->orientation) {
+ default: /* Normal or rotated 180 degrees. */
+ screen.size.width = fbinfo->x_resolution;
+ screen.size.height = fbinfo->y_resolution;
+ break;
+ case CB_FB_ORIENTATION_LEFT_UP: /* 90 degree rotation. */
+ case CB_FB_ORIENTATION_RIGHT_UP:
+ screen.size.width = fbinfo->y_resolution;
+ screen.size.height = fbinfo->x_resolution;
+ break;
+ }
screen.offset.x = 0;
screen.offset.y = 0;
@@ -242,7 +273,7 @@ int clear_screen(const struct rgb_color *rgb)
* We assume that for 32bpp the high byte gets ignored anyway. */
if ((((color >> 8) & 0xff) == (color & 0xff)) && (bpp == 16 ||
(((color >> 16) & 0xff) == (color & 0xff)))) {
- memset(fbaddr, color & 0xff, screen.size.height * bpl);
+ memset(fbaddr, color & 0xff, fbinfo->y_resolution * bpl);
} else {
for (p.y = 0; p.y < screen.size.height; p.y++)
for (p.x = 0; p.x < screen.size.width; p.x++)