All encoders share the same code to set encoders possible_crtcs field.
The patch creates helper to abstract out this code.

Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp.c       | 15 +++++----------
 drivers/gpu/drm/exynos/exynos_drm_core.c |  1 +
 drivers/gpu/drm/exynos/exynos_drm_crtc.c | 21 ++++++++++++++++++---
 drivers/gpu/drm/exynos/exynos_drm_crtc.h | 10 +++++++---
 drivers/gpu/drm/exynos/exynos_drm_dpi.c  | 12 ++++--------
 drivers/gpu/drm/exynos/exynos_drm_dsi.c  | 13 ++++---------
 drivers/gpu/drm/exynos/exynos_drm_vidi.c | 15 +++++----------
 drivers/gpu/drm/exynos/exynos_hdmi.c     | 25 +++++++++----------------
 8 files changed, 53 insertions(+), 59 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp.c 
b/drivers/gpu/drm/exynos/exynos_dp.c
index 385537b..39629e7 100644
--- a/drivers/gpu/drm/exynos/exynos_dp.c
+++ b/drivers/gpu/drm/exynos/exynos_dp.c
@@ -155,7 +155,7 @@ static int exynos_dp_bind(struct device *dev, struct device 
*master, void *data)
        struct exynos_dp_device *dp = dev_get_drvdata(dev);
        struct drm_encoder *encoder = &dp->encoder;
        struct drm_device *drm_dev = data;
-       int pipe, ret;
+       int ret;
 
        /*
         * Just like the probe function said, we don't need the
@@ -179,20 +179,15 @@ static int exynos_dp_bind(struct device *dev, struct 
device *master, void *data)
                        return ret;
        }
 
-       pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
-                                                 EXYNOS_DISPLAY_TYPE_LCD);
-       if (pipe < 0)
-               return pipe;
-
-       encoder->possible_crtcs = 1 << pipe;
-
-       DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
        drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
                         DRM_MODE_ENCODER_TMDS, NULL);
 
        drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
 
+       ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
+       if (ret < 0)
+               return ret;
+
        dp->plat_data.encoder = encoder;
 
        return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_core.c 
b/drivers/gpu/drm/exynos/exynos_drm_core.c
index edbd98f..b0c0621 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_core.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_core.c
@@ -13,6 +13,7 @@
  */
 
 #include <drm/drmP.h>
+
 #include "exynos_drm_drv.h"
 #include "exynos_drm_crtc.h"
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c 
b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index d72777f..5dc1aab 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -16,6 +16,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_encoder.h>
 
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_drv.h"
@@ -189,16 +190,30 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct 
drm_device *drm_dev,
        return ERR_PTR(ret);
 }
 
-int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
+struct exynos_drm_crtc *exynos_drm_crtc_get_by_type(struct drm_device *drm_dev,
                                       enum exynos_drm_output_type out_type)
 {
        struct drm_crtc *crtc;
 
        drm_for_each_crtc(crtc, drm_dev)
                if (to_exynos_crtc(crtc)->type == out_type)
-                       return drm_crtc_index(crtc);
+                       return to_exynos_crtc(crtc);
 
-       return -EPERM;
+       return ERR_PTR(-EPERM);
+}
+
+int exynos_drm_set_possible_crtcs(struct drm_encoder *encoder,
+               enum exynos_drm_output_type out_type)
+{
+       struct exynos_drm_crtc *crtc = exynos_drm_crtc_get_by_type(encoder->dev,
+                                               out_type);
+
+       if (IS_ERR(crtc))
+               return PTR_ERR(crtc);
+
+       encoder->possible_crtcs = drm_crtc_mask(&crtc->base);
+
+       return 0;
 }
 
 void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.h 
b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
index ef58b64..dec4461 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
@@ -15,21 +15,25 @@
 #ifndef _EXYNOS_DRM_CRTC_H_
 #define _EXYNOS_DRM_CRTC_H_
 
+
 #include "exynos_drm_drv.h"
 
 struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
                                        struct drm_plane *plane,
-                                       enum exynos_drm_output_type type,
+                                       enum exynos_drm_output_type out_type,
                                        const struct exynos_drm_crtc_ops *ops,
                                        void *context);
 void exynos_drm_crtc_wait_pending_update(struct exynos_drm_crtc *exynos_crtc);
 void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
                                   struct exynos_drm_plane *exynos_plane);
 
-/* This function gets pipe value to crtc device matched with out_type. */
-int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
+/* This function gets crtc device matched with out_type. */
+struct exynos_drm_crtc *exynos_drm_crtc_get_by_type(struct drm_device *drm_dev,
                                       enum exynos_drm_output_type out_type);
 
+int exynos_drm_set_possible_crtcs(struct drm_encoder *encoder,
+               enum exynos_drm_output_type out_type);
+
 /*
  * This function calls the crtc device(manager)'s te_handler() callback
  * to trigger to transfer video image at the tearing effect synchronization
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c 
b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index 63abcd2..2992491 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -203,19 +203,15 @@ int exynos_dpi_bind(struct drm_device *dev, struct 
drm_encoder *encoder)
 {
        int ret;
 
-       ret = exynos_drm_crtc_get_pipe_from_type(dev, EXYNOS_DISPLAY_TYPE_LCD);
-       if (ret < 0)
-               return ret;
-
-       encoder->possible_crtcs = 1 << ret;
-
-       DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
        drm_encoder_init(dev, encoder, &exynos_dpi_encoder_funcs,
                         DRM_MODE_ENCODER_TMDS, NULL);
 
        drm_encoder_helper_add(encoder, &exynos_dpi_encoder_helper_funcs);
 
+       ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
+       if (ret < 0)
+               return ret;
+
        ret = exynos_dpi_create_connector(encoder);
        if (ret) {
                DRM_ERROR("failed to create connector ret = %d\n", ret);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c 
b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 1690b83..3ae459f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1678,20 +1678,15 @@ static int exynos_dsi_bind(struct device *dev, struct 
device *master,
        struct drm_bridge *bridge;
        int ret;
 
-       ret = exynos_drm_crtc_get_pipe_from_type(drm_dev,
-                                                 EXYNOS_DISPLAY_TYPE_LCD);
-       if (ret < 0)
-               return ret;
-
-       encoder->possible_crtcs = 1 << ret;
-
-       DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
        drm_encoder_init(drm_dev, encoder, &exynos_dsi_encoder_funcs,
                         DRM_MODE_ENCODER_TMDS, NULL);
 
        drm_encoder_helper_add(encoder, &exynos_dsi_encoder_helper_funcs);
 
+       ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
+       if (ret < 0)
+               return ret;
+
        ret = exynos_dsi_create_connector(encoder);
        if (ret) {
                DRM_ERROR("failed to create connector ret = %d\n", ret);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c 
b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index cb8a728..10eada6b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -382,7 +382,7 @@ static int vidi_bind(struct device *dev, struct device 
*master, void *data)
        struct exynos_drm_plane *exynos_plane;
        struct exynos_drm_plane_config plane_config = { 0 };
        unsigned int i;
-       int pipe, ret;
+       int ret;
 
        ctx->drm_dev = drm_dev;
 
@@ -407,20 +407,15 @@ static int vidi_bind(struct device *dev, struct device 
*master, void *data)
                return PTR_ERR(ctx->crtc);
        }
 
-       pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
-                                                 EXYNOS_DISPLAY_TYPE_VIDI);
-       if (pipe < 0)
-               return pipe;
-
-       encoder->possible_crtcs = 1 << pipe;
-
-       DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
        drm_encoder_init(drm_dev, encoder, &exynos_vidi_encoder_funcs,
                         DRM_MODE_ENCODER_TMDS, NULL);
 
        drm_encoder_helper_add(encoder, &exynos_vidi_encoder_helper_funcs);
 
+       ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_VIDI);
+       if (ret < 0)
+               return ret;
+
        ret = vidi_create_connector(encoder);
        if (ret) {
                DRM_ERROR("failed to create connector ret = %d\n", ret);
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c 
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index f50bcb8..c3edfdd 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1699,32 +1699,25 @@ static int hdmi_bind(struct device *dev, struct device 
*master, void *data)
        struct drm_device *drm_dev = data;
        struct hdmi_context *hdata = dev_get_drvdata(dev);
        struct drm_encoder *encoder = &hdata->encoder;
-       struct exynos_drm_crtc *exynos_crtc;
-       struct drm_crtc *crtc;
-       int ret, pipe;
+       struct exynos_drm_crtc *crtc;
+       int ret;
 
        hdata->drm_dev = drm_dev;
 
-       pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
-                                                 EXYNOS_DISPLAY_TYPE_HDMI);
-       if (pipe < 0)
-               return pipe;
-
        hdata->phy_clk.enable = hdmiphy_clk_enable;
 
-       crtc = drm_crtc_from_index(drm_dev, pipe);
-       exynos_crtc = to_exynos_crtc(crtc);
-       exynos_crtc->pipe_clk = &hdata->phy_clk;
-
-       encoder->possible_crtcs = 1 << pipe;
-
-       DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
        drm_encoder_init(drm_dev, encoder, &exynos_hdmi_encoder_funcs,
                         DRM_MODE_ENCODER_TMDS, NULL);
 
        drm_encoder_helper_add(encoder, &exynos_hdmi_encoder_helper_funcs);
 
+       ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_HDMI);
+       if (ret < 0)
+               return ret;
+
+       crtc = exynos_drm_crtc_get_by_type(drm_dev, EXYNOS_DISPLAY_TYPE_HDMI);
+       crtc->pipe_clk = &hdata->phy_clk;
+
        ret = hdmi_create_connector(encoder);
        if (ret) {
                DRM_ERROR("failed to create connector ret = %d\n", ret);
-- 
2.7.4

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