Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / armada / armada_slave.c

diff --git a/kernel/drivers/gpu/drm/armada/armada_slave.c b/kernel/drivers/gpu/drm/armada/armada_slave.c
new file mode 100644 (file)
index 0000000..00d0fac
--- /dev/null
+++ b/kernel/drivers/gpu/drm/armada/armada_slave.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2012 Russell King
+ *  Rewritten from the dovefb driver, and Armada510 manuals.
+ *
+ * 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.
+ */
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+#include "armada_drm.h"
+#include "armada_output.h"
+#include "armada_slave.h"
+
+static int armada_drm_slave_get_modes(struct drm_connector *conn)
+{
+       struct drm_encoder *enc = armada_drm_connector_encoder(conn);
+       int count = 0;
+
+       if (enc) {
+               struct drm_encoder_slave *slave = to_encoder_slave(enc);
+
+               count = slave->slave_funcs->get_modes(enc, conn);
+       }
+
+       return count;
+}
+
+static void armada_drm_slave_destroy(struct drm_encoder *enc)
+{
+       struct drm_encoder_slave *slave = to_encoder_slave(enc);
+       struct i2c_client *client = drm_i2c_encoder_get_client(enc);
+
+       if (slave->slave_funcs)
+               slave->slave_funcs->destroy(enc);
+       if (client)
+               i2c_put_adapter(client->adapter);
+
+       drm_encoder_cleanup(&slave->base);
+       kfree(slave);
+}
+
+static const struct drm_encoder_funcs armada_drm_slave_encoder_funcs = {
+       .destroy        = armada_drm_slave_destroy,
+};
+
+static const struct drm_connector_helper_funcs armada_drm_slave_helper_funcs = {
+       .get_modes      = armada_drm_slave_get_modes,
+       .mode_valid     = armada_drm_slave_encoder_mode_valid,
+       .best_encoder   = armada_drm_connector_encoder,
+};
+
+static const struct drm_encoder_helper_funcs drm_slave_encoder_helpers = {
+       .dpms = drm_i2c_encoder_dpms,
+       .save = drm_i2c_encoder_save,
+       .restore = drm_i2c_encoder_restore,
+       .mode_fixup = drm_i2c_encoder_mode_fixup,
+       .prepare = drm_i2c_encoder_prepare,
+       .commit = drm_i2c_encoder_commit,
+       .mode_set = drm_i2c_encoder_mode_set,
+       .detect = drm_i2c_encoder_detect,
+};
+
+static int
+armada_drm_conn_slave_create(struct drm_connector *conn, const void *data)
+{
+       const struct armada_drm_slave_config *config = data;
+       struct drm_encoder_slave *slave;
+       struct i2c_adapter *adap;
+       int ret;
+
+       conn->interlace_allowed = config->interlace_allowed;
+       conn->doublescan_allowed = config->doublescan_allowed;
+       conn->polled = config->polled;
+
+       drm_connector_helper_add(conn, &armada_drm_slave_helper_funcs);
+
+       slave = kzalloc(sizeof(*slave), GFP_KERNEL);
+       if (!slave)
+               return -ENOMEM;
+
+       slave->base.possible_crtcs = config->crtcs;
+
+       adap = i2c_get_adapter(config->i2c_adapter_id);
+       if (!adap) {
+               kfree(slave);
+               return -EPROBE_DEFER;
+       }
+
+       ret = drm_encoder_init(conn->dev, &slave->base,
+                              &armada_drm_slave_encoder_funcs,
+                              DRM_MODE_ENCODER_TMDS);
+       if (ret) {
+               DRM_ERROR("unable to init encoder\n");
+               i2c_put_adapter(adap);
+               kfree(slave);
+               return ret;
+       }
+
+       ret = drm_i2c_encoder_init(conn->dev, slave, adap, &config->info);
+       i2c_put_adapter(adap);
+       if (ret) {
+               DRM_ERROR("unable to init encoder slave\n");
+               armada_drm_slave_destroy(&slave->base);
+               return ret;
+       }
+
+       drm_encoder_helper_add(&slave->base, &drm_slave_encoder_helpers);
+
+       ret = slave->slave_funcs->create_resources(&slave->base, conn);
+       if (ret) {
+               armada_drm_slave_destroy(&slave->base);
+               return ret;
+       }
+
+       ret = drm_mode_connector_attach_encoder(conn, &slave->base);
+       if (ret) {
+               armada_drm_slave_destroy(&slave->base);
+               return ret;
+       }
+
+       conn->encoder = &slave->base;
+
+       return ret;
+}
+
+static const struct armada_output_type armada_drm_conn_slave = {
+       .connector_type = DRM_MODE_CONNECTOR_HDMIA,
+       .create         = armada_drm_conn_slave_create,
+       .set_property   = armada_drm_slave_encoder_set_property,
+};
+
+int armada_drm_connector_slave_create(struct drm_device *dev,
+       const struct armada_drm_slave_config *config)
+{
+       return armada_output_create(dev, &armada_drm_conn_slave, config);
+}