From: Ville Syrj?l? <ville.syrj...@linux.intel.com>

Many of the drivers didn't implement palette/gamma handling, but were forced
to provide stubs for the hooks to avoid drm_fb_helper from oopsing. Now that
the hooks are optional, we can eliminate all the stubs.

Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/exynos/exynos_drm_crtc.c |  7 -------
 drivers/gpu/drm/omapdrm/omap_crtc.c      |  5 -----
 drivers/gpu/drm/omapdrm/omap_fbdev.c     | 14 --------------
 drivers/gpu/drm/qxl/qxl_display.c        | 13 -------------
 drivers/gpu/drm/qxl/qxl_fb.c             |  4 ----
 drivers/gpu/drm/tilcdc/tilcdc_crtc.c     |  5 -----
 drivers/gpu/drm/udl/udl_fb.c             | 15 ---------------
 drivers/gpu/drm/udl/udl_modeset.c        |  5 -----
 drivers/staging/imx-drm/ipuv3-crtc.c     |  5 -----
 9 files changed, 73 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c 
b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index e8894bc..694d035 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -160,12 +160,6 @@ static int exynos_drm_crtc_mode_set_base(struct drm_crtc 
*crtc, int x, int y,
        return 0;
 }

-static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc)
-{
-       DRM_DEBUG_KMS("%s\n", __FILE__);
-       /* drm framework doesn't check NULL */
-}
-
 static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
 {
        struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
@@ -183,7 +177,6 @@ static struct drm_crtc_helper_funcs 
exynos_crtc_helper_funcs = {
        .mode_fixup     = exynos_drm_crtc_mode_fixup,
        .mode_set       = exynos_drm_crtc_mode_set,
        .mode_set_base  = exynos_drm_crtc_mode_set_base,
-       .load_lut       = exynos_drm_crtc_load_lut,
        .disable        = exynos_drm_crtc_disable,
 };

diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c 
b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 79b200a..ef161ea 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -253,10 +253,6 @@ static int omap_crtc_mode_set_base(struct drm_crtc *crtc, 
int x, int y,
                        NULL, NULL);
 }

-static void omap_crtc_load_lut(struct drm_crtc *crtc)
-{
-}
-
 static void vblank_cb(void *arg)
 {
        struct drm_crtc *crtc = arg;
@@ -366,7 +362,6 @@ static const struct drm_crtc_helper_funcs 
omap_crtc_helper_funcs = {
        .prepare = omap_crtc_prepare,
        .commit = omap_crtc_commit,
        .mode_set_base = omap_crtc_mode_set_base,
-       .load_lut = omap_crtc_load_lut,
 };

 const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c 
b/drivers/gpu/drm/omapdrm/omap_fbdev.c
index b11ce60..002988d 100644
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -281,21 +281,7 @@ fail:
        return ret;
 }

-static void omap_crtc_fb_gamma_set(struct drm_crtc *crtc,
-               u16 red, u16 green, u16 blue, int regno)
-{
-       DBG("fbdev: set gamma");
-}
-
-static void omap_crtc_fb_gamma_get(struct drm_crtc *crtc,
-               u16 *red, u16 *green, u16 *blue, int regno)
-{
-       DBG("fbdev: get gamma");
-}
-
 static struct drm_fb_helper_funcs omap_fb_helper_funcs = {
-       .gamma_set = omap_crtc_fb_gamma_set,
-       .gamma_get = omap_crtc_fb_gamma_get,
        .fb_probe = omap_fbdev_create,
 };

diff --git a/drivers/gpu/drm/qxl/qxl_display.c 
b/drivers/gpu/drm/qxl/qxl_display.c
index 823d29e..5a6bfa2 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -222,12 +222,6 @@ static int qxl_add_common_modes(struct drm_connector 
*connector)
        return i - 1;
 }

-static void qxl_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
-                              u16 *blue, uint32_t start, uint32_t size)
-{
-       /* TODO */
-}
-
 static void qxl_crtc_destroy(struct drm_crtc *crtc)
 {
        struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
@@ -399,7 +393,6 @@ static int qxl_crtc_cursor_move(struct drm_crtc *crtc,
 static const struct drm_crtc_funcs qxl_crtc_funcs = {
        .cursor_set = qxl_crtc_cursor_set,
        .cursor_move = qxl_crtc_cursor_move,
-       .gamma_set = qxl_crtc_gamma_set,
        .set_config = drm_crtc_helper_set_config,
        .destroy = qxl_crtc_destroy,
 };
@@ -619,18 +612,12 @@ static void qxl_crtc_commit(struct drm_crtc *crtc)
        DRM_DEBUG("\n");
 }

-static void qxl_crtc_load_lut(struct drm_crtc *crtc)
-{
-       DRM_DEBUG("\n");
-}
-
 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
        .dpms = qxl_crtc_dpms,
        .mode_fixup = qxl_crtc_mode_fixup,
        .mode_set = qxl_crtc_mode_set,
        .prepare = qxl_crtc_prepare,
        .commit = qxl_crtc_commit,
-       .load_lut = qxl_crtc_load_lut,
 };

 static int qdev_crtc_init(struct drm_device *dev, int num_crtc)
diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c
index b3c5127..4b955b0 100644
--- a/drivers/gpu/drm/qxl/qxl_fb.c
+++ b/drivers/gpu/drm/qxl/qxl_fb.c
@@ -520,10 +520,6 @@ static int qxl_fbdev_destroy(struct drm_device *dev, 
struct qxl_fbdev *qfbdev)
 }

 static struct drm_fb_helper_funcs qxl_fb_helper_funcs = {
-       /* TODO
-       .gamma_set = qxl_crtc_fb_gamma_set,
-       .gamma_get = qxl_crtc_fb_gamma_get,
-       */
        .fb_probe = qxl_fb_find_or_create_single,
 };

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c 
b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 5dd3c7d..4de3fb4 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -384,10 +384,6 @@ static int tilcdc_crtc_mode_set_base(struct drm_crtc 
*crtc, int x, int y,
        return 0;
 }

-static void tilcdc_crtc_load_lut(struct drm_crtc *crtc)
-{
-}
-
 static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
                .destroy        = tilcdc_crtc_destroy,
                .set_config     = drm_crtc_helper_set_config,
@@ -401,7 +397,6 @@ static const struct drm_crtc_helper_funcs 
tilcdc_crtc_helper_funcs = {
                .commit         = tilcdc_crtc_commit,
                .mode_set       = tilcdc_crtc_mode_set,
                .mode_set_base  = tilcdc_crtc_mode_set_base,
-               .load_lut       = tilcdc_crtc_load_lut,
 };

 int tilcdc_crtc_max_width(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index dc0c065..97e9d61 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -393,19 +393,6 @@ static struct fb_ops udlfb_ops = {
        .fb_release = udl_fb_release,
 };

-static void udl_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
-                          u16 blue, int regno)
-{
-}
-
-static void udl_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
-                            u16 *blue, int regno)
-{
-       *red = 0;
-       *green = 0;
-       *blue = 0;
-}
-
 static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
                                      struct drm_file *file,
                                      unsigned flags, unsigned color,
@@ -558,8 +545,6 @@ out:
 }

 static struct drm_fb_helper_funcs udl_fb_helper_funcs = {
-       .gamma_set = udl_crtc_fb_gamma_set,
-       .gamma_get = udl_crtc_fb_gamma_get,
        .fb_probe = udlfb_create,
 };

diff --git a/drivers/gpu/drm/udl/udl_modeset.c 
b/drivers/gpu/drm/udl/udl_modeset.c
index e96d234..2ae1eb7 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -363,10 +363,6 @@ static void udl_crtc_destroy(struct drm_crtc *crtc)
        kfree(crtc);
 }

-static void udl_load_lut(struct drm_crtc *crtc)
-{
-}
-
 static void udl_crtc_prepare(struct drm_crtc *crtc)
 {
 }
@@ -383,7 +379,6 @@ static struct drm_crtc_helper_funcs udl_helper_funcs = {
        .prepare = udl_crtc_prepare,
        .commit = udl_crtc_commit,
        .disable = udl_crtc_disable,
-       .load_lut = udl_load_lut,
 };

 static const struct drm_crtc_funcs udl_crtc_funcs = {
diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c 
b/drivers/staging/imx-drm/ipuv3-crtc.c
index ea61c86..374973d 100644
--- a/drivers/staging/imx-drm/ipuv3-crtc.c
+++ b/drivers/staging/imx-drm/ipuv3-crtc.c
@@ -381,17 +381,12 @@ static void ipu_crtc_commit(struct drm_crtc *crtc)
        ipu_fb_enable(ipu_crtc);
 }

-static void ipu_crtc_load_lut(struct drm_crtc *crtc)
-{
-}
-
 static struct drm_crtc_helper_funcs ipu_helper_funcs = {
        .dpms = ipu_crtc_dpms,
        .mode_fixup = ipu_crtc_mode_fixup,
        .mode_set = ipu_crtc_mode_set,
        .prepare = ipu_crtc_prepare,
        .commit = ipu_crtc_commit,
-       .load_lut = ipu_crtc_load_lut,
 };

 static int ipu_enable_vblank(struct drm_crtc *crtc)
-- 
1.8.1.5

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