1 files changed, 212 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
new file mode 100644
index 000000000000..28d1f95a90cc
--- /dev/null
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ */
+
+#include "dsi.h"
+
+struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi)
+{
+        if (!msm_dsi || !msm_dsi->panel)
+                return NULL;
+
+        return (msm_dsi->panel_flags & MIPI_DSI_MODE_VIDEO) ?
+                msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID] :
+                msm_dsi->encoders[MSM_DSI_CMD_ENCODER_ID];
+}
+
+static void dsi_destroy(struct msm_dsi *msm_dsi)
+{
+        if (!msm_dsi)
+                return;
+
+        msm_dsi_manager_unregister(msm_dsi);
+        if (msm_dsi->host) {
+                msm_dsi_host_destroy(msm_dsi->host);
+                msm_dsi->host = NULL;
+        }
+
+        platform_set_drvdata(msm_dsi->pdev, NULL);
+}
+
+static struct msm_dsi *dsi_init(struct platform_device *pdev)
+{
+        struct msm_dsi *msm_dsi = NULL;
+        int ret;
+
+        if (!pdev) {
+                dev_err(&pdev->dev, "no dsi device\n");
+                ret = -ENXIO;
+                goto fail;
+        }
+
+        msm_dsi = devm_kzalloc(&pdev->dev, sizeof(*msm_dsi), GFP_KERNEL);
+        if (!msm_dsi) {
+                ret = -ENOMEM;
+                goto fail;
+        }
+        DBG("dsi probed=%p", msm_dsi);
+
+        msm_dsi->pdev = pdev;
+        platform_set_drvdata(pdev, msm_dsi);
+
+        /* Init dsi host */
+        ret = msm_dsi_host_init(msm_dsi);
+        if (ret)
+                goto fail;
+
+        /* Register to dsi manager */
+        ret = msm_dsi_manager_register(msm_dsi);
+        if (ret)
+                goto fail;
+
+        return msm_dsi;
+
+fail:
+        if (msm_dsi)
+                dsi_destroy(msm_dsi);
+
+        return ERR_PTR(ret);
+}
+
+static int dsi_bind(struct device *dev, struct device *master, void *data)
+{
+        struct drm_device *drm = dev_get_drvdata(master);
+        struct msm_drm_private *priv = drm->dev_private;
+        struct platform_device *pdev = to_platform_device(dev);
+        struct msm_dsi *msm_dsi;
+
+        DBG("");
+        msm_dsi = dsi_init(pdev);
+        if (IS_ERR(msm_dsi))
+                return PTR_ERR(msm_dsi);
+
+        priv->dsi[msm_dsi->id] = msm_dsi;
+
+        return 0;
+}
+
+static void dsi_unbind(struct device *dev, struct device *master,
+                void *data)
+{
+        struct drm_device *drm = dev_get_drvdata(master);
+        struct msm_drm_private *priv = drm->dev_private;
+        struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
+        int id = msm_dsi->id;
+
+        if (priv->dsi[id]) {
+                dsi_destroy(msm_dsi);
+                priv->dsi[id] = NULL;
+        }
+}
+
+static const struct component_ops dsi_ops = {
+        .bind   = dsi_bind,
+        .unbind = dsi_unbind,
+};
+
+static int dsi_dev_probe(struct platform_device *pdev)
+{
+        return component_add(&pdev->dev, &dsi_ops);
+}
+
+static int dsi_dev_remove(struct platform_device *pdev)
+{
+        DBG("");
+        component_del(&pdev->dev, &dsi_ops);
+        return 0;
+}
+
+static const struct of_device_id dt_match[] = {
+        { .compatible = "qcom,mdss-dsi-ctrl" },
+        {}
+};
+
+static struct platform_driver dsi_driver = {
+        .probe = dsi_dev_probe,
+        .remove = dsi_dev_remove,
+        .driver = {
+                .name = "msm_dsi",
+                .of_match_table = dt_match,
+        },
+};
+
+void __init msm_dsi_register(void)
+{
+        DBG("");
+        platform_driver_register(&dsi_driver);
+}
+
+void __exit msm_dsi_unregister(void)
+{
+        DBG("");
+        platform_driver_unregister(&dsi_driver);
+}
+
+int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
+                struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM])
+{
+        struct msm_drm_private *priv = dev->dev_private;
+        int ret, i;
+
+        if (WARN_ON(!encoders[MSM_DSI_VIDEO_ENCODER_ID] ||
+                !encoders[MSM_DSI_CMD_ENCODER_ID]))
+                return -EINVAL;
+
+        msm_dsi->dev = dev;
+
+        ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
+        if (ret) {
+                dev_err(dev->dev, "failed to modeset init host: %d\n", ret);
+                goto fail;
+        }
+
+        msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
+        if (IS_ERR(msm_dsi->bridge)) {
+                ret = PTR_ERR(msm_dsi->bridge);
+                dev_err(dev->dev, "failed to create dsi bridge: %d\n", ret);
+                msm_dsi->bridge = NULL;
+                goto fail;
+        }
+
+        msm_dsi->connector = msm_dsi_manager_connector_init(msm_dsi->id);
+        if (IS_ERR(msm_dsi->connector)) {
+                ret = PTR_ERR(msm_dsi->connector);
+                dev_err(dev->dev, "failed to create dsi connector: %d\n", ret);
+                msm_dsi->connector = NULL;
+                goto fail;
+        }
+
+        for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) {
+                encoders[i]->bridge = msm_dsi->bridge;
+                msm_dsi->encoders[i] = encoders[i];
+        }
+
+        priv->bridges[priv->num_bridges++]       = msm_dsi->bridge;
+        priv->connectors[priv->num_connectors++] = msm_dsi->connector;
+
+        return 0;
+fail:
+        if (msm_dsi) {
+                /* bridge/connector are normally destroyed by drm: */
+                if (msm_dsi->bridge) {
+                        msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
+                        msm_dsi->bridge = NULL;
+                }
+                if (msm_dsi->connector) {
+                        msm_dsi->connector->funcs->destroy(msm_dsi->connector);
+                        msm_dsi->connector = NULL;
+                }
+        }
+
+        return ret;
+}
+