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authorRodrigo Vivi <rodrigo.vivi@openbossa.org>2009-09-23 01:46:53 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 16:39:49 +0200
commit2f21a62f16136f369788795a98aa5c313261f07b (patch)
tree1974092ab93bee721536018d7890d77e268af7cd /drivers/video/omap/blizzard.c
parentomapfb: add support for the ZOOM MDK LCD (diff)
downloadlinux-2f21a62f16136f369788795a98aa5c313261f07b.tar.xz
linux-2f21a62f16136f369788795a98aa5c313261f07b.zip
omapfb: add support for rotation on the Blizzard LCD ctrl
The LCD controller (EPSON S1D13744) supports rotation (0, 90, 180 and 270 degrees) on hardware just setting the bits 0 and 1 of 0x28 register (LCD Panel Configuration Register). Now it is possible to use this caps only setting the angle degree on var rotate of fb_var_screeninfo using the FBIOPUT_VSCREENINFO ioctl. Fixed-by: Siarhei Siamashka <siarhei.siamashka@nokia.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@openbossa.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Imre Deak <imre.deak@nokia.com> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/omap/blizzard.c')
-rw-r--r--drivers/video/omap/blizzard.c91
1 files changed, 86 insertions, 5 deletions
diff --git a/drivers/video/omap/blizzard.c b/drivers/video/omap/blizzard.c
index 9dfcf39d3367..d5e59556f9e2 100644
--- a/drivers/video/omap/blizzard.c
+++ b/drivers/video/omap/blizzard.c
@@ -44,6 +44,7 @@
#define BLIZZARD_CLK_SRC 0x0e
#define BLIZZARD_MEM_BANK0_ACTIVATE 0x10
#define BLIZZARD_MEM_BANK0_STATUS 0x14
+#define BLIZZARD_PANEL_CONFIGURATION 0x28
#define BLIZZARD_HDISP 0x2a
#define BLIZZARD_HNDP 0x2c
#define BLIZZARD_VDISP0 0x2e
@@ -162,6 +163,10 @@ struct blizzard_struct {
int vid_scaled;
int last_color_mode;
int zoom_on;
+ int zoom_area_gx1;
+ int zoom_area_gx2;
+ int zoom_area_gy1;
+ int zoom_area_gy2;
int screen_width;
int screen_height;
unsigned te_connected:1;
@@ -513,6 +518,13 @@ static int do_full_screen_update(struct blizzard_request *req)
return REQ_PENDING;
}
+static int check_1d_intersect(int a1, int a2, int b1, int b2)
+{
+ if (a2 <= b1 || b2 <= a1)
+ return 0;
+ return 1;
+}
+
/* Setup all planes with an overlapping area with the update window. */
static int do_partial_update(struct blizzard_request *req, int plane,
int x, int y, int w, int h,
@@ -525,6 +537,7 @@ static int do_partial_update(struct blizzard_request *req, int plane,
int color_mode;
int flags;
int zoom_off;
+ int have_zoom_for_this_update = 0;
/* Global coordinates, relative to pixel 0,0 of the LCD */
gx1 = x + blizzard.plane[plane].pos_x;
@@ -544,10 +557,6 @@ static int do_partial_update(struct blizzard_request *req, int plane,
gx2_out = gx1_out + w_out;
gy2_out = gy1_out + h_out;
}
- zoom_off = blizzard.zoom_on && gx1 == 0 && gy1 == 0 &&
- w == blizzard.screen_width && h == blizzard.screen_height;
- blizzard.zoom_on = (!zoom_off && blizzard.zoom_on) ||
- (w < w_out || h < h_out);
for (i = 0; i < OMAPFB_PLANE_NUM; i++) {
struct plane_info *p = &blizzard.plane[i];
@@ -653,8 +662,49 @@ static int do_partial_update(struct blizzard_request *req, int plane,
else
disable_tearsync();
+ if ((gx2_out - gx1_out) != (gx2 - gx1) ||
+ (gy2_out - gy1_out) != (gy2 - gy1))
+ have_zoom_for_this_update = 1;
+
+ /* 'background' type of screen update (as opposed to 'destructive')
+ can be used to disable scaling if scaling is active */
+ zoom_off = blizzard.zoom_on && !have_zoom_for_this_update &&
+ (gx1_out == 0) && (gx2_out == blizzard.screen_width) &&
+ (gy1_out == 0) && (gy2_out == blizzard.screen_height) &&
+ (gx1 == 0) && (gy1 == 0);
+
+ if (blizzard.zoom_on && !have_zoom_for_this_update && !zoom_off &&
+ check_1d_intersect(blizzard.zoom_area_gx1, blizzard.zoom_area_gx2,
+ gx1_out, gx2_out) &&
+ check_1d_intersect(blizzard.zoom_area_gy1, blizzard.zoom_area_gy2,
+ gy1_out, gy2_out)) {
+ /* Previous screen update was using scaling, current update
+ * is not using it. Additionally, current screen update is
+ * going to overlap with the scaled area. Scaling needs to be
+ * disabled in order to avoid 'magnifying glass' effect.
+ * Dummy setup of background window can be used for this.
+ */
+ set_window_regs(0, 0, blizzard.screen_width,
+ blizzard.screen_height,
+ 0, 0, blizzard.screen_width,
+ blizzard.screen_height,
+ BLIZZARD_COLOR_RGB565, 1, flags);
+ blizzard.zoom_on = 0;
+ }
+
+ /* remember scaling settings if we have scaled update */
+ if (have_zoom_for_this_update) {
+ blizzard.zoom_on = 1;
+ blizzard.zoom_area_gx1 = gx1_out;
+ blizzard.zoom_area_gx2 = gx2_out;
+ blizzard.zoom_area_gy1 = gy1_out;
+ blizzard.zoom_area_gy2 = gy2_out;
+ }
+
set_window_regs(gx1, gy1, gx2, gy2, gx1_out, gy1_out, gx2_out, gy2_out,
color_mode, zoom_off, flags);
+ if (zoom_off)
+ blizzard.zoom_on = 0;
blizzard.extif->set_bits_per_cycle(16);
/* set_window_regs has left the register index at the right
@@ -908,6 +958,35 @@ static int blizzard_set_scale(int plane, int orig_w, int orig_h,
return 0;
}
+static int blizzard_set_rotate(int angle)
+{
+ u32 l;
+
+ l = blizzard_read_reg(BLIZZARD_PANEL_CONFIGURATION);
+ l &= ~0x03;
+
+ switch (angle) {
+ case 0:
+ l = l | 0x00;
+ break;
+ case 90:
+ l = l | 0x03;
+ break;
+ case 180:
+ l = l | 0x02;
+ break;
+ case 270:
+ l = l | 0x01;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ blizzard_write_reg(BLIZZARD_PANEL_CONFIGURATION, l);
+
+ return 0;
+}
+
static int blizzard_enable_plane(int plane, int enable)
{
if (enable)
@@ -1285,7 +1364,8 @@ static void blizzard_get_caps(int plane, struct omapfb_caps *caps)
caps->ctrl |= OMAPFB_CAPS_MANUAL_UPDATE |
OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE |
OMAPFB_CAPS_WINDOW_SCALE |
- OMAPFB_CAPS_WINDOW_OVERLAY;
+ OMAPFB_CAPS_WINDOW_OVERLAY |
+ OMAPFB_CAPS_WINDOW_ROTATE;
if (blizzard.te_connected)
caps->ctrl |= OMAPFB_CAPS_TEARSYNC;
caps->wnd_color |= (1 << OMAPFB_COLOR_RGB565) |
@@ -1560,6 +1640,7 @@ struct lcd_ctrl blizzard_ctrl = {
.setup_plane = blizzard_setup_plane,
.set_scale = blizzard_set_scale,
.enable_plane = blizzard_enable_plane,
+ .set_rotate = blizzard_set_rotate,
.update_window = blizzard_update_window_async,
.sync = blizzard_sync,
.suspend = blizzard_suspend,