drm/omap: move out of staging

Now that the omapdss interface has been reworked so that omapdrm can use
dispc directly, we have been able to fix the remaining functional kms
issues with omapdrm.  And in the mean time the PM sequencing and many
other of that open issues have been solved.  So I think it makes sense
to finally move omapdrm out of staging.

Signed-off-by: Rob Clark <robdclark@gmail.com>

1 files changed, 170 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
new file mode 100644
index 000000000000..7e1f2ab65372
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
@@ -0,0 +1,170 @@
+/*
+ * drivers/gpu/drm/omapdrm/omap_encoder.c
+ *
+ * Copyright (C) 2011 Texas Instruments
+ * Author: Rob Clark <rob@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "omap_drv.h"
+
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+#include <linux/list.h>
+
+
+/*
+ * encoder funcs
+ */
+
+#define to_omap_encoder(x) container_of(x, struct omap_encoder, base)
+
+/* The encoder and connector both map to same dssdev.. the encoder
+ * handles the 'active' parts, ie. anything the modifies the state
+ * of the hw, and the connector handles the 'read-only' parts, like
+ * detecting connection and reading edid.
+ */
+struct omap_encoder {
+        struct drm_encoder base;
+        struct omap_dss_device *dssdev;
+};
+
+static void omap_encoder_destroy(struct drm_encoder *encoder)
+{
+        struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
+        drm_encoder_cleanup(encoder);
+        kfree(omap_encoder);
+}
+
+static const struct drm_encoder_funcs omap_encoder_funcs = {
+        .destroy = omap_encoder_destroy,
+};
+
+/*
+ * The CRTC drm_crtc_helper_set_mode() doesn't really give us the right
+ * order.. the easiest way to work around this for now is to make all
+ * the encoder-helper's no-op's and have the omap_crtc code take care
+ * of the sequencing and call us in the right points.
+ *
+ * Eventually to handle connecting CRTCs to different encoders properly,
+ * either the CRTC helpers need to change or we need to replace
+ * drm_crtc_helper_set_mode(), but lets wait until atomic-modeset for
+ * that.
+ */
+
+static void omap_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+}
+
+static bool omap_encoder_mode_fixup(struct drm_encoder *encoder,
+                                  const struct drm_display_mode *mode,
+                                  struct drm_display_mode *adjusted_mode)
+{
+        return true;
+}
+
+static void omap_encoder_mode_set(struct drm_encoder *encoder,
+                                struct drm_display_mode *mode,
+                                struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void omap_encoder_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void omap_encoder_commit(struct drm_encoder *encoder)
+{
+}
+
+static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = {
+        .dpms = omap_encoder_dpms,
+        .mode_fixup = omap_encoder_mode_fixup,
+        .mode_set = omap_encoder_mode_set,
+        .prepare = omap_encoder_prepare,
+        .commit = omap_encoder_commit,
+};
+
+/*
+ * Instead of relying on the helpers for modeset, the omap_crtc code
+ * calls these functions in the proper sequence.
+ */
+
+int omap_encoder_set_enabled(struct drm_encoder *encoder, bool enabled)
+{
+        struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
+        struct omap_dss_device *dssdev = omap_encoder->dssdev;
+        struct omap_dss_driver *dssdrv = dssdev->driver;
+
+        if (enabled) {
+                return dssdrv->enable(dssdev);
+        } else {
+                dssdrv->disable(dssdev);
+                return 0;
+        }
+}
+
+int omap_encoder_update(struct drm_encoder *encoder,
+                struct omap_overlay_manager *mgr,
+                struct omap_video_timings *timings)
+{
+        struct drm_device *dev = encoder->dev;
+        struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
+        struct omap_dss_device *dssdev = omap_encoder->dssdev;
+        struct omap_dss_driver *dssdrv = dssdev->driver;
+        int ret;
+
+        dssdev->output->manager = mgr;
+
+        ret = dssdrv->check_timings(dssdev, timings);
+        if (ret) {
+                dev_err(dev->dev, "could not set timings: %d\n", ret);
+                return ret;
+        }
+
+        dssdrv->set_timings(dssdev, timings);
+
+        return 0;
+}
+
+/* initialize encoder */
+struct drm_encoder *omap_encoder_init(struct drm_device *dev,
+                struct omap_dss_device *dssdev)
+{
+        struct drm_encoder *encoder = NULL;
+        struct omap_encoder *omap_encoder;
+
+        omap_encoder = kzalloc(sizeof(*omap_encoder), GFP_KERNEL);
+        if (!omap_encoder) {
+                dev_err(dev->dev, "could not allocate encoder\n");
+                goto fail;
+        }
+
+        omap_encoder->dssdev = dssdev;
+
+        encoder = &omap_encoder->base;
+
+        drm_encoder_init(dev, encoder, &omap_encoder_funcs,
+                         DRM_MODE_ENCODER_TMDS);
+        drm_encoder_helper_add(encoder, &omap_encoder_helper_funcs);
+
+        return encoder;
+
+fail:
+        if (encoder)
+                omap_encoder_destroy(encoder);
+
+        return NULL;
+}