[PATCH 01/10] drm: Initialize a linear gamma table by default

[Daniel Vetter]

Code stolen from gma500.

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/drm_crtc.c                 | 13 +++++++++++++
 drivers/gpu/drm/gma500/psb_intel_display.c |  7 -------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 55ffde5a3a4a..a5bba9f023e9 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -5138,6 +5138,9 @@ EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
                                 int gamma_size)
 {
+       uint16_t *r_base, *g_base, *b_base;
+       int i;
+
        crtc->gamma_size = gamma_size;

        crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
@@ -5147,6 +5150,16 @@ int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
                return -ENOMEM;
        }

+       r_base = crtc->gamma_store;
+       g_base = r_base + gamma_size;
+       b_base = g_base + gamma_size;
+       for (i = 0; i < gamma_size; i++) {
+               r_base[i] = i << 8;
+               g_base[i] = i << 8;
+               b_base[i] = i << 8;
+       }
+
+
        return 0;
 }
 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c 
b/drivers/gpu/drm/gma500/psb_intel_display.c
index 398015be87e4..7b6c84925098 100644
--- a/drivers/gpu/drm/gma500/psb_intel_display.c
+++ b/drivers/gpu/drm/gma500/psb_intel_display.c
@@ -491,7 +491,6 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe,
        struct drm_psb_private *dev_priv = dev->dev_private;
        struct gma_crtc *gma_crtc;
        int i;
-       uint16_t *r_base, *g_base, *b_base;

        /* We allocate a extra array of drm_connector pointers
         * for fbdev after the crtc */
@@ -519,16 +518,10 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe,
        gma_crtc->pipe = pipe;
        gma_crtc->plane = pipe;

-       r_base = gma_crtc->base.gamma_store;
-       g_base = r_base + 256;
-       b_base = g_base + 256;
        for (i = 0; i < 256; i++) {
                gma_crtc->lut_r[i] = i;
                gma_crtc->lut_g[i] = i;
                gma_crtc->lut_b[i] = i;
-               r_base[i] = i << 8;
-               g_base[i] = i << 8;
-               b_base[i] = i << 8;

                gma_crtc->lut_adj[i] = 0;
        }
-- 
2.8.0.rc3