drm/i915/icl: Move dsi host init code to common file

This patch moves intl_dsi_host_init() code to intel_dsi.c so that legacy
and gen11 DSI code can share this code.

v2 by Jani:
 - Move the shared stuff to intel_dsi.c
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1ee42b2d3c639e3f3c14a2c1595b8778901574d4.1540900289.git.jani.nikula@intel.com

drivers/gpu/drm/i915/intel_dsi.c

@@ -28,3 +28,37 @@ int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
 		return 200;
 	}
 }
+
+struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
+					   const struct mipi_dsi_host_ops *funcs,
+					   enum port port)
+{
+	struct intel_dsi_host *host;
+	struct mipi_dsi_device *device;
+
+	host = kzalloc(sizeof(*host), GFP_KERNEL);
+	if (!host)
+		return NULL;
+
+	host->base.ops = funcs;
+	host->intel_dsi = intel_dsi;
+	host->port = port;
+
+	/*
+	 * We should call mipi_dsi_host_register(&host->base) here, but we don't
+	 * have a host->dev, and we don't have OF stuff either. So just use the
+	 * dsi framework as a library and hope for the best. Create the dsi
+	 * devices by ourselves here too. Need to be careful though, because we
+	 * don't initialize any of the driver model devices here.
+	 */
+	device = kzalloc(sizeof(*device), GFP_KERNEL);
+	if (!device) {
+		kfree(host);
+		return NULL;
+	}
+
+	device->host = &host->base;
+	host->device = device;
+
+	return host;
+}

drivers/gpu/drm/i915/intel_dsi.h

@@ -152,6 +152,9 @@ int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
 /* vlv_dsi.c */
 void vlv_dsi_wait_for_fifo_empty(struct intel_dsi *intel_dsi, enum port port);
 enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
+struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
+					   const struct mipi_dsi_host_ops *funcs,
+					   enum port port);
 
 /* vlv_dsi_pll.c */
 int vlv_dsi_pll_compute(struct intel_encoder *encoder,

drivers/gpu/drm/i915/vlv_dsi.c

@@ -206,39 +206,6 @@ static const struct mipi_dsi_host_ops intel_dsi_host_ops = {
 	.transfer = intel_dsi_host_transfer,
 };
 
-static struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
-						  enum port port)
-{
-	struct intel_dsi_host *host;
-	struct mipi_dsi_device *device;
-
-	host = kzalloc(sizeof(*host), GFP_KERNEL);
-	if (!host)
-		return NULL;
-
-	host->base.ops = &intel_dsi_host_ops;
-	host->intel_dsi = intel_dsi;
-	host->port = port;
-
-	/*
-	 * We should call mipi_dsi_host_register(&host->base) here, but we don't
-	 * have a host->dev, and we don't have OF stuff either. So just use the
-	 * dsi framework as a library and hope for the best. Create the dsi
-	 * devices by ourselves here too. Need to be careful though, because we
-	 * don't initialize any of the driver model devices here.
-	 */
-	device = kzalloc(sizeof(*device), GFP_KERNEL);
-	if (!device) {
-		kfree(host);
-		return NULL;
-	}
-
-	device->host = &host->base;
-	host->device = device;
-
-	return host;
-}
-
 /*
  * send a video mode command
  *
@@ -1768,7 +1735,8 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv)
 	for_each_dsi_port(port, intel_dsi->ports) {
 		struct intel_dsi_host *host;
 
-		host = intel_dsi_host_init(intel_dsi, port);
+		host = intel_dsi_host_init(intel_dsi, &intel_dsi_host_ops,
+					   port);
 		if (!host)
 			goto err;