[PATCH v2 08/59] drm/kmb: Added mipi_dsi_host initialization

[Anitha Chrisanthus]

Added mipi DSI host initialization functions

Signed-off-by: Anitha Chrisanthus <anitha.chrisant...@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paa...@intel.com>
---
 drivers/gpu/drm/kmb/kmb_dsi.c | 59 +++++++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/kmb/kmb_dsi.h |  4 +++
 2 files changed, 63 insertions(+)

diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c
index 654fae8..d82411e 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.c
+++ b/drivers/gpu/drm/kmb/kmb_dsi.c
@@ -65,12 +65,59 @@ static const struct drm_connector_funcs 
kmb_dsi_connector_funcs = {
        .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 };
 
+static ssize_t kmb_dsi_host_transfer(struct mipi_dsi_host *host,
+                                    const struct mipi_dsi_msg *msg)
+{
+       return 0;
+}
+
+static int kmb_dsi_host_attach(struct mipi_dsi_host *host,
+                              struct mipi_dsi_device *dev)
+{
+       return 0;
+}
+
+static int kmb_dsi_host_detach(struct mipi_dsi_host *host,
+                              struct mipi_dsi_device *dev)
+{
+       return 0;
+}
+
+static const struct mipi_dsi_host_ops kmb_dsi_host_ops = {
+       .attach = kmb_dsi_host_attach,
+       .detach = kmb_dsi_host_detach,
+       .transfer = kmb_dsi_host_transfer,
+};
+
+static struct kmb_dsi_host *kmb_dsi_host_init(struct kmb_dsi *kmb_dsi)
+{
+       struct kmb_dsi_host *host;
+       struct mipi_dsi_device *device;
+
+       host = kzalloc(sizeof(*host), GFP_KERNEL);
+       if (!host)
+               return NULL;
+
+       host->base.ops = &kmb_dsi_host_ops;
+       host->kmb_dsi = kmb_dsi;
+
+       device = kzalloc(sizeof(*device), GFP_KERNEL);
+       if (!device) {
+               kfree(host);
+               return NULL;
+       }
+       device->host = &host->base;
+       host->device = device;
+       return host;
+}
+
 void kmb_dsi_init(struct drm_device *dev)
 {
        struct kmb_dsi *kmb_dsi;
        struct drm_encoder *encoder;
        struct kmb_connector *kmb_connector;
        struct drm_connector *connector;
+       struct kmb_dsi_host *host;
 
        kmb_dsi = kzalloc(sizeof(*kmb_dsi), GFP_KERNEL);
        if (!kmb_dsi)
@@ -88,7 +135,19 @@ void kmb_dsi_init(struct drm_device *dev)
        encoder = &kmb_dsi->base;
        drm_encoder_init(dev, encoder, &kmb_dsi_funcs, DRM_MODE_ENCODER_DSI,
                         "MIPI-DSI");
+
+       host = kmb_dsi_host_init(kmb_dsi);
+       if (!host) {
+               drm_encoder_cleanup(encoder);
+               kfree(kmb_dsi);
+               kfree(kmb_connector);
+       }
+
        drm_connector_init(dev, connector, &kmb_dsi_connector_funcs,
                           DRM_MODE_CONNECTOR_DSI);
        drm_connector_helper_add(connector, &kmb_dsi_connector_helper_funcs);
+
+       connector->encoder = encoder;
+       drm_connector_attach_encoder(connector, encoder);
+
 }
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.h b/drivers/gpu/drm/kmb/kmb_dsi.h
index 9a6b0b7..0f5da87 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.h
+++ b/drivers/gpu/drm/kmb/kmb_dsi.h
@@ -12,19 +12,23 @@
 #include "kmb_drv.h"
 
 struct kmb_connector;
+struct kmb_dsi_host;
 
 struct kmb_dsi {
        struct drm_encoder base;
        struct kmb_connector *attached_connector;
+       struct kmb_dsi_host *dsi_host;
 };
 
 struct kmb_dsi_host {
        struct mipi_dsi_host base;
        struct kmb_dsi *kmb_dsi;
+       struct mipi_dsi_device *device;
 };
 
 struct kmb_connector {
        struct drm_connector base;
+       struct drm_encoder *encoder;
        struct drm_display_mode *fixed_mode;
 };
 
-- 
2.7.4

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