diff options
| author | Julius Werner <jwerner@chromium.org> | 2017-04-13 14:27:20 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-04-17 18:12:02 +0200 |
| commit | 7b58319e9c320426f7dee202bf9201b6628bf958 (patch) | |
| tree | b3cf6dc883076ecfad1d6a4d1b0d2db4f0ca7916 /payloads/libpayload/drivers/video | |
| parent | 1f8a28cbaea7bbebef4f4c626d1f0d094b76b151 (diff) | |
libpayload: cbgfx: Show square images on portrait displays
CBGFX currently doesn't support portrait screens at all. This will have
to be fixed eventually but might take a bit of effort. As a first step
to make devices with a portrait panel somewhat usable, this patch will
just force a square canvas on these panels and keep the bottom part of
the screen black.
Also switch set_pixel to calculate framebuffer position via
bytes_per_line instead of x_resolution. This is supposed to be the
canonical way to do that and may differ in cases where the display
controller requires a certain alignment from framebuffer lines.
Change-Id: I47dd3bf95ab8a7d8b7e1913e0ddab346eedd46f1
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19279
Tested-by: build bot (Jenkins)
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'payloads/libpayload/drivers/video')
| -rw-r--r-- | payloads/libpayload/drivers/video/graphics.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/payloads/libpayload/drivers/video/graphics.c b/payloads/libpayload/drivers/video/graphics.c index f1d916a18f..4a8792c151 100644 --- a/payloads/libpayload/drivers/video/graphics.c +++ b/payloads/libpayload/drivers/video/graphics.c @@ -125,9 +125,9 @@ static inline uint32_t calculate_color(const struct rgb_color *rgb) 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; int i; - uint8_t * const pixel = fbaddr + (coord->x + - coord->y * fbinfo->x_resolution) * bpp / 8; + uint8_t * const pixel = fbaddr + coord->y * bpl + coord->x * bpp / 8; for (i = 0; i < bpp / 8; i++) pixel[i] = (color >> (i * 8)); } @@ -156,8 +156,11 @@ static int cbgfx_init(void) /* Calculate canvas size & offset, assuming the screen is landscape */ if (screen.size.height > screen.size.width) { - LOG("Portrait screen not supported\n"); - return CBGFX_ERROR_PORTRAIT_SCREEN; + const int bpl = fbinfo->bytes_per_line; + LOG("Portrait screen not supported, forcing square image!\n"); + memset(fbaddr + screen.size.width * bpl, 0, + (screen.size.height - screen.size.width) * bpl); + screen.size.height = screen.size.width; } canvas.size.height = screen.size.height; canvas.size.width = canvas.size.height; |