1 files changed, 31 insertions, 15 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index fb187c78978f..229be38cc6ca 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1177,27 +1177,43 @@ static int dce4_crtc_do_set_base(struct drm_crtc *crtc,
 
                 /* Set NUM_BANKS. */
                 if (rdev->family >= CHIP_TAHITI) {
-                        unsigned tileb, index, num_banks, tile_split_bytes;
+                        unsigned index, num_banks;
 
-                        /* Calculate the macrotile mode index. */
-                        tile_split_bytes = 64 << tile_split;
-                        tileb = 8 * 8 * target_fb->bits_per_pixel / 8;
-                        tileb = min(tile_split_bytes, tileb);
+                        if (rdev->family >= CHIP_BONAIRE) {
+                                unsigned tileb, tile_split_bytes;
 
-                        for (index = 0; tileb > 64; index++) {
-                                tileb >>= 1;
-                        }
+                                /* Calculate the macrotile mode index. */
+                                tile_split_bytes = 64 << tile_split;
+                                tileb = 8 * 8 * target_fb->bits_per_pixel / 8;
+                                tileb = min(tile_split_bytes, tileb);
 
-                        if (index >= 16) {
-                                DRM_ERROR("Wrong screen bpp (%u) or tile split (%u)\n",
-                                          target_fb->bits_per_pixel, tile_split);
-                                return -EINVAL;
-                        }
+                                for (index = 0; tileb > 64; index++)
+                                        tileb >>= 1;
+
+                                if (index >= 16) {
+                                        DRM_ERROR("Wrong screen bpp (%u) or tile split (%u)\n",
+                                                  target_fb->bits_per_pixel, tile_split);
+                                        return -EINVAL;
+                                }
 
-                        if (rdev->family >= CHIP_BONAIRE)
                                 num_banks = (rdev->config.cik.macrotile_mode_array[index] >> 6) & 0x3;
-                        else
+                        } else {
+                                switch (target_fb->bits_per_pixel) {
+                                case 8:
+                                        index = 10;
+                                        break;
+                                case 16:
+                                        index = SI_TILE_MODE_COLOR_2D_SCANOUT_16BPP;
+                                        break;
+                                default:
+                                case 32:
+                                        index = SI_TILE_MODE_COLOR_2D_SCANOUT_32BPP;
+                                        break;
+                                }
+
                                 num_banks = (rdev->config.si.tile_mode_array[index] >> 20) & 0x3;
+                        }
+
                         fb_format |= EVERGREEN_GRPH_NUM_BANKS(num_banks);
                 } else {
                         /* NI and older. */