Merge tag 'du-next-20190608-2' of git://linuxtv.org/pinchartl/media into drm-next

R-Car DU changes for v5.3:

- R8A774A1 SoC support
- LVDS dual-link mode support
- Support for additional formats
- Misc fixes

Signed-off-by: Daniel Vetter <[email protected]>
From: Laurent Pinchart <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

diff --combined drivers/gpu/drm/bridge/thc63lvd1024.c
index fd597f58f4e6433b20202661201dc2f34f065bac,709dd28b43d6c4aabf19c71d0014d5a3156e75f9..3d74129b29950237ceac343fd45acea812e390cc
--- 1/drivers/gpu/drm/bridge/thc63lvd1024.c
--- 2/drivers/gpu/drm/bridge/thc63lvd1024.c
+++ b/drivers/gpu/drm/bridge/thc63lvd1024.c
@@@ -5,17 -5,15 +5,17 @@@
   * Copyright (C) 2018 Jacopo Mondi <[email protected]>
   */
  
 -#include <drm/drmP.h>
 -#include <drm/drm_bridge.h>
 -#include <drm/drm_panel.h>
 -
  #include <linux/gpio/consumer.h>
 +#include <linux/module.h>
 +#include <linux/of.h>
  #include <linux/of_graph.h>
 +#include <linux/platform_device.h>
  #include <linux/regulator/consumer.h>
  #include <linux/slab.h>
  
 +#include <drm/drm_bridge.h>
 +#include <drm/drm_panel.h>
 +
  enum thc63_ports {
        THC63_LVDS_IN0,
        THC63_LVDS_IN1,
@@@ -33,6 -31,8 +33,8 @@@ struct thc63_dev 
  
        struct drm_bridge bridge;
        struct drm_bridge *next;
+ 
+       struct drm_bridge_timings timings;
  };
  
  static inline struct thc63_dev *to_thc63(struct drm_bridge *bridge)
@@@ -50,15 -50,28 +52,28 @@@ static int thc63_attach(struct drm_brid
  static enum drm_mode_status thc63_mode_valid(struct drm_bridge *bridge,
                                        const struct drm_display_mode *mode)
  {
+       struct thc63_dev *thc63 = to_thc63(bridge);
+       unsigned int min_freq;
+       unsigned int max_freq;
+ 
        /*
-        * The THC63LVD1024 clock frequency range is 8 to 135 MHz in single-in
-        * mode. Note that the limits are different in dual-in, single-out mode,
-        * and will need to be adjusted accordingly.
+        * The THC63LVD1024 pixel rate range is 8 to 135 MHz in all modes but
+        * dual-in, single-out where it is 40 to 150 MHz. As dual-in, dual-out
+        * isn't supported by the driver yet, simply derive the limits from the
+        * input mode.
         */
-       if (mode->clock < 8000)
+       if (thc63->timings.dual_link) {
+               min_freq = 40000;
+               max_freq = 150000;
+       } else {
+               min_freq = 8000;
+               max_freq = 135000;
+       }
+ 
+       if (mode->clock < min_freq)
                return MODE_CLOCK_LOW;
  
-       if (mode->clock > 135000)
+       if (mode->clock > max_freq)
                return MODE_CLOCK_HIGH;
  
        return MODE_OK;
@@@ -103,19 -116,19 +118,19 @@@ static const struct drm_bridge_funcs th
  
  static int thc63_parse_dt(struct thc63_dev *thc63)
  {
-       struct device_node *thc63_out;
+       struct device_node *endpoint;
        struct device_node *remote;
  
-       thc63_out = of_graph_get_endpoint_by_regs(thc63->dev->of_node,
-                                                 THC63_RGB_OUT0, -1);
-       if (!thc63_out) {
+       endpoint = of_graph_get_endpoint_by_regs(thc63->dev->of_node,
+                                                THC63_RGB_OUT0, -1);
+       if (!endpoint) {
                dev_err(thc63->dev, "Missing endpoint in port@%u\n",
                        THC63_RGB_OUT0);
                return -ENODEV;
        }
  
-       remote = of_graph_get_remote_port_parent(thc63_out);
-       of_node_put(thc63_out);
+       remote = of_graph_get_remote_port_parent(endpoint);
+       of_node_put(endpoint);
        if (!remote) {
                dev_err(thc63->dev, "Endpoint in port@%u unconnected\n",
                        THC63_RGB_OUT0);
@@@ -134,6 -147,22 +149,22 @@@
        if (!thc63->next)
                return -EPROBE_DEFER;
  
+       endpoint = of_graph_get_endpoint_by_regs(thc63->dev->of_node,
+                                                THC63_LVDS_IN1, -1);
+       if (endpoint) {
+               remote = of_graph_get_remote_port_parent(endpoint);
+               of_node_put(endpoint);
+ 
+               if (remote) {
+                       if (of_device_is_available(remote))
+                               thc63->timings.dual_link = true;
+                       of_node_put(remote);
+               }
+       }
+ 
+       dev_dbg(thc63->dev, "operating in %s-link mode\n",
+               thc63->timings.dual_link ? "dual" : "single");
+ 
        return 0;
  }
  
@@@ -190,6 -219,7 +221,7 @@@ static int thc63_probe(struct platform_
        thc63->bridge.driver_private = thc63;
        thc63->bridge.of_node = pdev->dev.of_node;
        thc63->bridge.funcs = &thc63_bridge_func;
+       thc63->bridge.timings = &thc63->timings;
  
        drm_bridge_add(&thc63->bridge);