@@ -51,7 +51,10 @@ static void ironlake_pch_clock_get(struct intel_crtc *crtc,
static int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
int x, int y, struct drm_framebuffer *old_fb);
-
+static int intel_framebuffer_init(struct drm_device *dev,
+ struct intel_framebuffer *ifb,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj);
typedef struct {
int min, max;
@@ -7692,11 +7695,6 @@ static struct drm_display_mode load_detect_mode = {
704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
};
-static int intel_framebuffer_init(struct drm_device *dev,
- struct intel_framebuffer *ifb,
- struct drm_mode_fb_cmd2 *mode_cmd,
- struct drm_i915_gem_object *obj);
-
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
@@ -242,7 +242,130 @@ static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
*blue = intel_crtc->lut_b[regno] << 8;
}
+static struct drm_fb_helper_crtc *
+intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
+{
+ int i;
+
+ for (i = 0; i < fb_helper->crtc_count; i++)
+ if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
+ return &fb_helper->crtc_info[i];
+
+ return NULL;
+}
+
+/*
+ * Try to read the BIOS display configuration and use it for the initial
+ * fb configuration.
+ *
+ * The BIOS or boot loader will generally create an initial display
+ * configuration for us that includes some set of active pipes and displays.
+ * This routine tries to figure out which pipes and connectors are active
+ * and stuffs them into the crtcs and modes array given to us by the
+ * drm_fb_helper code.
+ *
+ * The overall sequence is:
+ * intel_fbdev_init - from driver load
+ * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
+ * drm_fb_helper_init - build fb helper structs
+ * drm_fb_helper_single_add_all_connectors - more fb helper structs
+ * intel_fbdev_initial_config - apply the config
+ * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
+ * drm_setup_crtcs - build crtc config for fbdev
+ * intel_fb_initial_config - find active connectors etc
+ * drm_fb_helper_single_fb_probe - set up fbdev
+ * intelfb_create - re-use or alloc fb, build out fbdev structs
+ *
+ * Note that we don't make special consideration whether we could actually
+ * switch to the selected modes without a full modeset. E.g. when the display
+ * is in VGA mode we need to recalculate watermarks and set a new high-res
+ * framebuffer anyway.
+ */
+static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
+ struct drm_fb_helper_crtc **crtcs,
+ struct drm_display_mode **modes,
+ bool *enabled, int width, int height)
+{
+ int i, j;
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ struct drm_fb_helper_connector *fb_conn;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+ struct drm_fb_helper_crtc *new_crtc;
+
+ fb_conn = fb_helper->connector_info[i];
+ connector = fb_conn->connector;
+ if (!enabled[i]) {
+ DRM_DEBUG_KMS("connector %d not enabled, skipping\n",
+ connector->base.id);
+ continue;
+ }
+
+ encoder = connector->encoder;
+ if (!encoder || WARN_ON(!encoder->crtc)) {
+ DRM_DEBUG_KMS("connector %d has no encoder or crtc, skipping\n",
+ connector->base.id);
+ enabled[i] = false;
+ continue;
+ }
+
+ new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);
+
+ /*
+ * Make sure we're not trying to drive multiple connectors
+ * with a single CRTC, since our cloning support may not
+ * match the BIOS.
+ */
+ for (j = 0; j < fb_helper->connector_count; j++) {
+ if (crtcs[j] == new_crtc)
+ return false;
+ }
+
+ DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
+ fb_conn->connector->base.id);
+
+ /* go for command line mode first */
+ modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);
+
+ /* try for preferred next */
+ if (!modes[i]) {
+ DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
+ fb_conn->connector->base.id);
+ modes[i] = drm_has_preferred_mode(fb_conn, width,
+ height);
+ }
+
+ /* last resort: use current mode */
+ if (!modes[i]) {
+ /*
+ * IMPORTANT: We want to use the adjusted mode (i.e.
+ * after the panel fitter upscaling) as the initial
+ * config, not the input mode, which is what crtc->mode
+ * usually contains. But since our current fastboot
+ * code puts a mode derived from the post-pfit timings
+ * into crtc->mode this works out correctly. We don't
+ * use hwmode anywhere right now, so use it for this
+ * since the fb helper layer wants a pointer to
+ * something we own.
+ */
+ intel_mode_from_pipe_config(&encoder->crtc->hwmode,
+ &to_intel_crtc(encoder->crtc)->config);
+ modes[i] = &encoder->crtc->hwmode;
+ }
+ crtcs[i] = new_crtc;
+
+ DRM_DEBUG_KMS("connector %s on crtc %d: %s\n",
+ drm_get_connector_name(connector),
+ encoder->crtc->base.id,
+ modes[i]->name);
+ }
+
+ return true;
+}
+
static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+ .initial_config = intel_fb_initial_config,
.gamma_set = intel_crtc_fb_gamma_set,
.gamma_get = intel_crtc_fb_gamma_get,
.fb_probe = intelfb_create,