drm/kms: start adding command line interface using fb.

[note this requires an fb patch posted to linux-fbdev-devel already]

This uses the normal video= command line option to control the kms
output setup at boot time. It is used to override the autodetection
done by kms.

video= normally takes a framebuffer as the first parameter, in kms
it will take a connector name, DVI-I-1, or LVDS-1 etc. If no output
connector is specified the mode string will apply to all connectors.

The mode specification used will match down the probed modes, and if
no mode is found it will add a CVT mode that matches.

video=1024x768 - all connectors match a 1024x768 mode or add a CVT on
video=VGA-1:1024x768, VGA-1 connector gets mode only.

The same strings as used in current fb modedb.c are used, except I've
added three more letters, e, D, d, e = enable, D = enable Digital,
d = disable, which allow a connector to be forced into a certain state.

Signed-off-by: Dave Airlie <airlied@redhat.com>

8 files changed, 349 insertions, 20 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ba728ad77f2a..8e7b0ebece0c 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -482,6 +482,7 @@ void drm_connector_cleanup(struct drm_connector *connector)
         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
                 drm_mode_remove(connector, mode);
 
+        kfree(connector->fb_helper_private);
         mutex_lock(&dev->mode_config.mutex);
         drm_mode_object_put(dev, &connector->base);
         list_del(&connector->head);
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index fe8697447f32..82fd6e82450f 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -32,6 +32,7 @@
 #include "drmP.h"
 #include "drm_crtc.h"
 #include "drm_crtc_helper.h"
+#include "drm_fb_helper.h"
 
 static void drm_mode_validate_flag(struct drm_connector *connector,
                                    int flags)
@@ -90,7 +91,15 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
         list_for_each_entry_safe(mode, t, &connector->modes, head)
                 mode->status = MODE_UNVERIFIED;
 
-        connector->status = connector->funcs->detect(connector);
+        if (connector->force) {
+                if (connector->force == DRM_FORCE_ON)
+                        connector->status = connector_status_connected;
+                else
+                        connector->status = connector_status_disconnected;
+                if (connector->funcs->force)
+                        connector->funcs->force(connector);
+        } else
+                connector->status = connector->funcs->detect(connector);
 
         if (connector->status == connector_status_disconnected) {
                 DRM_DEBUG_KMS("%s is disconnected\n",
@@ -267,6 +276,56 @@ static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *con
         return NULL;
 }
 
+static bool drm_has_cmdline_mode(struct drm_connector *connector)
+{
+        struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+        struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode;
+        return cmdline_mode->specified;
+}
+
+static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height)
+{
+        struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+        struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode;
+        struct drm_display_mode *mode = NULL;
+
+        if (cmdline_mode->specified == false)
+                return mode;
+
+        /* attempt to find a matching mode in the list of modes
+         *  we have gotten so far, if not add a CVT mode that conforms
+         */
+        if (cmdline_mode->rb || cmdline_mode->margins)
+                goto create_mode;
+
+        list_for_each_entry(mode, &connector->modes, head) {
+                /* check width/height */
+                if (mode->hdisplay != cmdline_mode->xres ||
+                    mode->vdisplay != cmdline_mode->yres)
+                        continue;
+
+                if (cmdline_mode->refresh_specified) {
+                        if (mode->vrefresh != cmdline_mode->refresh)
+                                continue;
+                }
+
+                if (cmdline_mode->interlace) {
+                        if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
+                                continue;
+                }
+                return mode;
+        }
+
+create_mode:
+        mode = drm_cvt_mode(connector->dev, cmdline_mode->xres,
+                            cmdline_mode->yres,
+                            cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
+                            cmdline_mode->rb, cmdline_mode->interlace,
+                            cmdline_mode->margins);
+        list_add(&mode->head, &connector->modes);
+        return mode;
+}
+
 static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
 {
         bool enable;
@@ -317,10 +376,16 @@ static bool drm_target_preferred(struct drm_device *dev,
                         continue;
                 }
 
-                DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
-                          connector->base.id);
+                DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
+                              connector->base.id);
 
-                modes[i] = drm_has_preferred_mode(connector, width, height);
+                /* got for command line mode first */
+                modes[i] = drm_pick_cmdline_mode(connector, width, height);
+                if (!modes[i]) {
+                        DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
+                                      connector->base.id);
+                        modes[i] = drm_has_preferred_mode(connector, width, height);
+                }
                 /* No preferred modes, pick one off the list */
                 if (!modes[i] && !list_empty(&connector->modes)) {
                         list_for_each_entry(modes[i], &connector->modes, head)
@@ -369,6 +434,8 @@ static int drm_pick_crtcs(struct drm_device *dev,
         my_score = 1;
         if (connector->status == connector_status_connected)
                 my_score++;
+        if (drm_has_cmdline_mode(connector))
+                my_score++;
         if (drm_has_preferred_mode(connector, width, height))
                 my_score++;
 
@@ -943,6 +1010,8 @@ bool drm_helper_initial_config(struct drm_device *dev)
 {
         int count = 0;
 
+        drm_fb_helper_parse_command_line(dev);
+
         count = drm_helper_probe_connector_modes(dev,
                                                  dev->mode_config.max_width,
                                                  dev->mode_config.max_height);
@@ -950,7 +1019,7 @@ bool drm_helper_initial_config(struct drm_device *dev)
         /*
          * we shouldn't end up with no modes here.
          */
-        WARN(!count, "Connected connector with 0 modes\n");
+        WARN(!count, "No connectors reported connected with modes\n");
 
         drm_setup_crtcs(dev);
 
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 9888c2076b2e..3c0d2b3aed76 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -560,7 +560,8 @@ struct drm_display_mode *drm_mode_std(struct drm_device *dev,
                 vsize = (hsize * 9) / 16;
         /* HDTV hack */
         if (hsize == 1360 && vsize == 765 && vrefresh_rate == 60) {
-                mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
+                mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
+                                    false);
                 mode->hdisplay = 1366;
                 mode->vsync_start = mode->vsync_start - 1;
                 mode->vsync_end = mode->vsync_end - 1;
@@ -579,7 +580,8 @@ struct drm_display_mode *drm_mode_std(struct drm_device *dev,
                 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
                 break;
         case LEVEL_CVT:
-                mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
+                mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
+                                    false);
                 break;
         }
         return mode;
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 2c4671314884..2537d2e81849 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -40,6 +40,196 @@ MODULE_LICENSE("GPL and additional rights");
 
 static LIST_HEAD(kernel_fb_helper_list);
 
+int drm_fb_helper_add_connector(struct drm_connector *connector)
+{
+        connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
+        if (!connector->fb_helper_private)
+                return -ENOMEM;
+
+        return 0;
+
+}
+EXPORT_SYMBOL(drm_fb_helper_add_connector);
+
+static int my_atoi(const char *name)
+{
+        int val = 0;
+
+        for (;; name++) {
+                switch (*name) {
+                case '0' ... '9':
+                        val = 10*val+(*name-'0');
+                        break;
+                default:
+                        return val;
+                }
+        }
+}
+
+/**
+ * drm_fb_helper_connector_parse_command_line - parse command line for connector
+ * @connector - connector to parse line for
+ * @mode_option - per connector mode option
+ *
+ * This parses the connector specific then generic command lines for
+ * modes and options to configure the connector.
+ *
+ * This uses the same parameters as the fb modedb.c, except for extra
+ *      <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
+ *
+ * enable/enable Digital/disable bit at the end
+ */
+static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector,
+                                                       const char *mode_option)
+{
+        const char *name;
+        unsigned int namelen;
+        int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
+        unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0;
+        int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
+        int i;
+        enum drm_connector_force force = DRM_FORCE_UNSPECIFIED;
+        struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+        struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode;
+
+        if (!mode_option)
+                mode_option = fb_mode_option;
+
+        if (!mode_option) {
+                cmdline_mode->specified = false;
+                return false;
+        }
+
+        name = mode_option;
+        namelen = strlen(name);
+        for (i = namelen-1; i >= 0; i--) {
+                switch (name[i]) {
+                case '@':
+                        namelen = i;
+                        if (!refresh_specified && !bpp_specified &&
+                            !yres_specified) {
+                                refresh = my_atoi(&name[i+1]);
+                                refresh_specified = 1;
+                                if (cvt || rb)
+                                        cvt = 0;
+                        } else
+                                goto done;
+                        break;
+                case '-':
+                        namelen = i;
+                        if (!bpp_specified && !yres_specified) {
+                                bpp = my_atoi(&name[i+1]);
+                                bpp_specified = 1;
+                                if (cvt || rb)
+                                        cvt = 0;
+                        } else
+                                goto done;
+                        break;
+                case 'x':
+                        if (!yres_specified) {
+                                yres = my_atoi(&name[i+1]);
+                                yres_specified = 1;
+                        } else
+                                goto done;
+                case '0' ... '9':
+                        break;
+                case 'M':
+                        if (!yres_specified)
+                                cvt = 1;
+                        break;
+                case 'R':
+                        if (!cvt)
+                                rb = 1;
+                        break;
+                case 'm':
+                        if (!cvt)
+                                margins = 1;
+                        break;
+                case 'i':
+                        if (!cvt)
+                                interlace = 1;
+                        break;
+                case 'e':
+                        force = DRM_FORCE_ON;
+                        break;
+                case 'D':
+                        if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) ||
+                            (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB))
+                                force = DRM_FORCE_ON;
+                        else
+                                force = DRM_FORCE_ON_DIGITAL;
+                        break;
+                case 'd':
+                        force = DRM_FORCE_OFF;
+                        break;
+                default:
+                        goto done;
+                }
+        }
+        if (i < 0 && yres_specified) {
+                xres = my_atoi(name);
+                res_specified = 1;
+        }
+done:
+
+        DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
+                drm_get_connector_name(connector), xres, yres,
+                (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
+                "", (margins) ? " with margins" : "", (interlace) ?
+                " interlaced" : "");
+
+        if (force) {
+                const char *s;
+                switch (force) {
+                case DRM_FORCE_OFF: s = "OFF"; break;
+                case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break;
+                default:
+                case DRM_FORCE_ON: s = "ON"; break;
+                }
+
+                DRM_INFO("forcing %s connector %s\n",
+                         drm_get_connector_name(connector), s);
+                connector->force = force;
+        }
+
+        if (res_specified) {
+                cmdline_mode->specified = true;
+                cmdline_mode->xres = xres;
+                cmdline_mode->yres = yres;
+        }
+
+        if (refresh_specified) {
+                cmdline_mode->refresh_specified = true;
+                cmdline_mode->refresh = refresh;
+        }
+
+        if (bpp_specified) {
+                cmdline_mode->bpp_specified = true;
+                cmdline_mode->bpp = bpp;
+        }
+        cmdline_mode->rb = rb ? true : false;
+        cmdline_mode->cvt = cvt  ? true : false;
+        cmdline_mode->interlace = interlace ? true : false;
+
+        return true;
+}
+
+int drm_fb_helper_parse_command_line(struct drm_device *dev)
+{
+        struct drm_connector *connector;
+
+        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+                char *option = NULL;
+
+                /* do something on return - turn off connector maybe */
+                if (fb_get_options(drm_get_connector_name(connector), &option))
+                        continue;
+
+                drm_fb_helper_connector_parse_command_line(connector, option);
+        }
+        return 0;
+}
+
 bool drm_fb_helper_force_kernel_mode(void)
 {
         int i = 0;
@@ -484,6 +674,8 @@ int drm_fb_helper_single_fb_probe(struct drm_device *dev,
                                                    uint32_t fb_height,
                                                    uint32_t surface_width,
                                                    uint32_t surface_height,
+                                                   uint32_t surface_depth,
+                                                   uint32_t surface_bpp,
                                                    struct drm_framebuffer **fb_ptr))
 {
         struct drm_crtc *crtc;
@@ -497,8 +689,37 @@ int drm_fb_helper_single_fb_probe(struct drm_device *dev,
         struct drm_framebuffer *fb;
         struct drm_mode_set *modeset = NULL;
         struct drm_fb_helper *fb_helper;
+        uint32_t surface_depth = 24, surface_bpp = 32;
 
         /* first up get a count of crtcs now in use and new min/maxes width/heights */
+        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+                struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
+                struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode;
+
+                if (cmdline_mode->bpp_specified) {
+                        switch (cmdline_mode->bpp) {
+                        case 8:
+                                surface_depth = surface_bpp = 8;
+                                break;
+                        case 15:
+                                surface_depth = 15;
+                                surface_bpp = 16;
+                                break;
+                        case 16:
+                                surface_depth = surface_bpp = 16;
+                                break;
+                        case 24:
+                                surface_depth = surface_bpp = 24;
+                                break;
+                        case 32:
+                                surface_depth = 24;
+                                surface_bpp = 32;
+                                break;
+                        }
+                        break;
+                }
+        }
+
         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
                 if (drm_helper_crtc_in_use(crtc)) {
                         if (crtc->desired_mode) {
@@ -527,7 +748,8 @@ int drm_fb_helper_single_fb_probe(struct drm_device *dev,
         /* do we have an fb already? */
         if (list_empty(&dev->mode_config.fb_kernel_list)) {
                 ret = (*fb_create)(dev, fb_width, fb_height, surface_width,
-                                   surface_height, &fb);
+                                   surface_height, surface_depth, surface_bpp,
+                                   &fb);
                 if (ret)
                         return -EINVAL;
                 new_fb = 1;
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 49404ce1666e..51f677215f1d 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -88,7 +88,7 @@ EXPORT_SYMBOL(drm_mode_debug_printmodeline);
 #define HV_FACTOR                       1000
 struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay,
                                       int vdisplay, int vrefresh,
-                                      bool reduced, bool interlaced)
+                                      bool reduced, bool interlaced, bool margins)
 {
         /* 1) top/bottom margin size (% of height) - default: 1.8, */
 #define CVT_MARGIN_PERCENTAGE           18
@@ -101,7 +101,6 @@ struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay,
         /* Pixel Clock step (kHz) */
 #define CVT_CLOCK_STEP                  250
         struct drm_display_mode *drm_mode;
-        bool margins = false;
         unsigned int vfieldrate, hperiod;
         int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync;
         int interlace;
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 7ba4a232a97f..e85d7e9eed7d 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -110,6 +110,7 @@ EXPORT_SYMBOL(intelfb_resize);
 static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
                           uint32_t fb_height, uint32_t surface_width,
                           uint32_t surface_height,
+                          uint32_t surface_depth, uint32_t surface_bpp,
                           struct drm_framebuffer **fb_p)
 {
         struct fb_info *info;
@@ -125,9 +126,9 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
         mode_cmd.width = surface_width;
         mode_cmd.height = surface_height;
 
-        mode_cmd.bpp = 32;
+        mode_cmd.bpp = surface_bpp;
         mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
-        mode_cmd.depth = 24;
+        mode_cmd.depth = surface_depth;
 
         size = mode_cmd.pitch * mode_cmd.height;
         size = ALIGN(size, PAGE_SIZE);
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index f8cb8b4e2b17..db155d5e60ce 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -26,6 +26,7 @@
 #include "drmP.h"
 #include "drm_edid.h"
 #include "drm_crtc_helper.h"
+#include "drm_fb_helper.h"
 #include "radeon_drm.h"
 #include "radeon.h"
 #include "atom.h"
@@ -245,7 +246,7 @@ static void radeon_add_common_modes(struct drm_encoder *encoder, struct drm_conn
                 if (common_modes[i].w < 320 || common_modes[i].h < 200)
                         continue;
 
-                mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false);
+                mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
                 drm_mode_probed_add(connector, mode);
         }
 }
@@ -559,7 +560,7 @@ static int radeon_tv_get_modes(struct drm_connector *connector)
                 radeon_add_common_modes(encoder, connector);
         else {
                 /* only 800x600 is supported right now on pre-avivo chips */
-                tv_mode = drm_cvt_mode(dev, 800, 600, 60, false, false);
+                tv_mode = drm_cvt_mode(dev, 800, 600, 60, false, false, false);
                 tv_mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
                 drm_mode_probed_add(connector, tv_mode);
         }
@@ -743,6 +744,15 @@ struct drm_encoder *radeon_dvi_encoder(struct drm_connector *connector)
         return NULL;
 }
 
+static void radeon_dvi_force(struct drm_connector *connector)
+{
+        struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+        if (connector->force == DRM_FORCE_ON)
+                radeon_connector->use_digital = false;
+        if (connector->force == DRM_FORCE_ON_DIGITAL)
+                radeon_connector->use_digital = true;
+}
+
 struct drm_connector_helper_funcs radeon_dvi_connector_helper_funcs = {
         .get_modes = radeon_dvi_get_modes,
         .mode_valid = radeon_vga_mode_valid,
@@ -755,6 +765,7 @@ struct drm_connector_funcs radeon_dvi_connector_funcs = {
         .fill_modes = drm_helper_probe_single_connector_modes,
         .set_property = radeon_connector_set_property,
         .destroy = radeon_connector_destroy,
+        .force = radeon_dvi_force,
 };
 
 void
@@ -771,6 +782,7 @@ radeon_add_atom_connector(struct drm_device *dev,
         struct radeon_connector *radeon_connector;
         struct radeon_connector_atom_dig *radeon_dig_connector;
         uint32_t subpixel_order = SubPixelNone;
+        int ret;
 
         /* fixme - tv/cv/din */
         if (connector_type == DRM_MODE_CONNECTOR_Unknown)
@@ -914,6 +926,10 @@ radeon_add_atom_connector(struct drm_device *dev,
                 break;
         }
 
+        ret = drm_fb_helper_add_connector(connector);
+        if (ret)
+                goto failed;
+
         connector->display_info.subpixel_order = subpixel_order;
         drm_sysfs_connector_add(connector);
         return;
@@ -936,6 +952,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
         struct drm_connector *connector;
         struct radeon_connector *radeon_connector;
         uint32_t subpixel_order = SubPixelNone;
+        int ret;
 
         /* fixme - tv/cv/din */
         if (connector_type == DRM_MODE_CONNECTOR_Unknown)
@@ -1027,6 +1044,10 @@ radeon_add_legacy_connector(struct drm_device *dev,
                 break;
         }
 
+        ret = drm_fb_helper_add_connector(connector);
+        if (ret)
+                goto failed;
+
         connector->display_info.subpixel_order = subpixel_order;
         drm_sysfs_connector_add(connector);
         return;
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index 944e4fa78db5..1ba704eedefb 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -128,6 +128,7 @@ static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
 int radeonfb_create(struct drm_device *dev,
                     uint32_t fb_width, uint32_t fb_height,
                     uint32_t surface_width, uint32_t surface_height,
+                    uint32_t surface_depth, uint32_t surface_bpp,
                     struct drm_framebuffer **fb_p)
 {
         struct radeon_device *rdev = dev->dev_private;
@@ -148,10 +149,10 @@ int radeonfb_create(struct drm_device *dev,
 
         mode_cmd.width = surface_width;
         mode_cmd.height = surface_height;
-        mode_cmd.bpp = 32;
+        mode_cmd.bpp = surface_bpp;
         /* need to align pitch with crtc limits */
         mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8);
-        mode_cmd.depth = 24;
+        mode_cmd.depth = surface_depth;
 
         size = mode_cmd.pitch * mode_cmd.height;
         aligned_size = ALIGN(size, PAGE_SIZE);
@@ -290,13 +291,26 @@ out:
         return ret;
 }
 
+static char *mode_option;
+int radeon_parse_options(char *options)
+{
+        char *this_opt;
+
+        if (!options || !*options)
+                return 0;
+
+        while ((this_opt = strsep(&options, ",")) != NULL) {
+                if (!*this_opt)
+                        continue;
+                mode_option = this_opt;
+        }
+        return 0;
+}
+
 int radeonfb_probe(struct drm_device *dev)
 {
-        int ret;
-        ret = drm_fb_helper_single_fb_probe(dev, &radeonfb_create);
-        return ret;
+        return drm_fb_helper_single_fb_probe(dev, &radeonfb_create);
 }
-EXPORT_SYMBOL(radeonfb_probe);
 
 int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
 {