Add basic RandR 1.2 support.

1 files changed, 215 insertions, 0 deletions

diff --git a/src/glamo-display.c b/src/glamo-display.c
new file mode 100644
index 0000000..dd98a26
--- /dev/null
+++ b/src/glamo-display.c
@@ -0,0 +1,215 @@
+/*
+ * Copyright © 2009 Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include "xf86i2c.h"
+#include "xf86Crtc.h"
+
+#include "fbdevhw.h"
+#include <linux/fb.h>
+#include <sys/ioctl.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#define DPMS_SERVER
+#include <X11/extensions/dpms.h>
+
+#include "glamo.h"
+#include "glamo-regs.h"
+
+static void GlamoCrtcDPMS(xf86CrtcPtr crtc, int mode);
+static void GlamoCrtcGammaSet(xf86CrtcPtr crtc,  CARD16 *red, CARD16 *green,
+				  CARD16 *blue, int size);
+static void GlamoCrtcDestroy(xf86CrtcPtr crtc);
+
+static Bool
+GlamoSetModeMajor(xf86CrtcPtr crtc, DisplayModePtr mode,
+				  Rotation rotation, int x, int y);
+
+static const xf86CrtcFuncsRec glamo_crtc_funcs = {
+	.dpms = GlamoCrtcDPMS,
+	.save = NULL,
+	.restore = NULL,
+	.lock = NULL,
+	.unlock = NULL,
+	.mode_fixup = NULL,
+	.prepare = NULL,
+	.mode_set = NULL,
+	.commit = NULL,
+	.gamma_set = GlamoCrtcGammaSet,
+	.shadow_allocate = NULL,
+	.shadow_create = NULL,
+	.shadow_destroy = NULL,
+	.set_cursor_colors = NULL,
+	.set_cursor_position = NULL,
+	.show_cursor = NULL,
+	.hide_cursor = NULL,
+	.load_cursor_image = NULL,
+	.load_cursor_argb = NULL,
+	.destroy = GlamoCrtcDestroy,
+	.set_mode_major = GlamoSetModeMajor
+};
+
+static void
+ConvertModeXfreeToFb(DisplayModePtr mode, Rotation *rotation, struct fb_var_screeninfo *var) {
+    Rotation rot;
+    if (rotation)
+        rot = *rotation;
+    else
+        rot = RR_Rotate_0;
+
+    var->xres = mode->HDisplay;
+    var->yres = mode->VDisplay;
+    var->xres_virtual = mode->HDisplay;
+    var->yres_virtual = mode->VDisplay;
+    var->xoffset = 0;
+    var->yoffset = 0;
+
+    var->pixclock = mode->Clock ? 1000000000 / mode->Clock : 0;
+    var->left_margin = mode->HTotal - mode->HSyncEnd;
+    var->right_margin = mode->HSyncStart - mode->HDisplay;
+    var->hsync_len = mode->HSyncEnd - mode->HSyncStart;
+    var->upper_margin = mode->VTotal - mode->VSyncEnd;
+    var->lower_margin = mode->VSyncStart - mode->VDisplay;
+    var->vsync_len = mode->VSyncEnd - mode->VSyncStart;
+
+    var->sync = 0;
+    var->vmode = 0;
+    if (rot) {
+        switch (*rotation) {
+        case RR_Rotate_0:
+            var->rotate = FB_ROTATE_UR;
+            break;
+        case RR_Rotate_90:
+            var->rotate = FB_ROTATE_CW;
+            break;
+        case RR_Rotate_180:
+            var->rotate = FB_ROTATE_UD;
+            break;
+        case RR_Rotate_270:
+            var->rotate = FB_ROTATE_CCW;
+            break;
+        }
+    }
+}
+
+Bool
+GlamoCrtcInit(ScrnInfoPtr pScrn) {
+    return xf86CrtcCreate(pScrn, &glamo_crtc_funcs) != NULL;
+}
+
+static void
+GlamoCrtcDPMS(xf86CrtcPtr crtc, int mode) {
+	fbdevHWDPMSSet(crtc->scrn, mode, 0);
+}
+
+static void GlamoCrtcGammaSet(xf86CrtcPtr crtc,  CARD16 *red, CARD16 *green,
+				  CARD16 *blue, int size) {
+}
+
+static void GlamoCrtcDestroy(xf86CrtcPtr crtc) {
+}
+
+static Bool
+GlamoSetModeMajor(xf86CrtcPtr crtc, DisplayModePtr mode,
+				  Rotation rotation, int x, int y) {
+    ScrnInfoPtr scrn = crtc->scrn;
+    xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
+    DisplayModeRec saved_mode;
+    int saved_x, saved_y;
+    Rotation saved_rotation;
+    GlamoPtr pGlamo = GlamoPTR(crtc->scrn);
+    Bool ret = FALSE;
+    int i;
+
+    struct fb_var_screeninfo var = pGlamo->fb_var;
+
+    crtc->enabled = xf86CrtcInUse (crtc);
+
+    if (!crtc->enabled)
+        return TRUE;
+
+    saved_mode = crtc->mode;
+    saved_x = crtc->x;
+    saved_y = crtc->y;
+    saved_rotation = crtc->rotation;
+
+    crtc->mode = *mode;
+    crtc->x = x;
+    crtc->y = y;
+    crtc->rotation = rotation;
+
+	crtc->funcs->dpms(crtc, DPMSModeOff);
+    for (i = 0; i < xf86_config->num_output; i++) {
+        xf86OutputPtr output = xf86_config->output[i];
+
+        if (output->crtc != crtc)
+            continue;
+
+        output->funcs->prepare(output);
+	}
+
+    ConvertModeXfreeToFb(mode, &rotation, &var);
+    /* FIXME: Shouldn't the kernel take care of this? */
+    if (rotation == RR_Rotate_90 || rotation == RR_Rotate_270) {
+        var.pixclock *= 2;
+    }
+
+    if (ioctl(pGlamo->fb_fd, FBIOPUT_VSCREENINFO, (void*)&var) != 0) {
+        goto done;
+    }
+
+	crtc->funcs->dpms (crtc, DPMSModeOn);
+	for (i = 0; i < xf86_config->num_output; i++)
+	{
+        xf86OutputPtr output = xf86_config->output[i];
+        if (output->crtc == crtc)
+        {
+            output->funcs->commit(output);
+#ifdef RANDR_12_INTERFACE
+            if (output->randr_output)
+                RRPostPendingProperties (output->randr_output);
+#endif
+        }
+	}
+
+	ret = TRUE;
+	if (scrn->pScreen)
+        xf86CrtcSetScreenSubpixelOrder (scrn->pScreen);
+
+done:
+	if (!ret) {
+		crtc->x = saved_x;
+		crtc->y = saved_y;
+		crtc->rotation = saved_rotation;
+		crtc->mode = saved_mode;
+	}
+
+    return ret;
+}