static LIST_HEAD(kernel_fb_helper_list);
-int drm_fb_helper_add_connector(struct drm_connector *connector)
+/* simple single crtc case helper function */
+int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
{
- connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
- if (!connector->fb_helper_private)
- return -ENOMEM;
+ struct drm_device *dev = fb_helper->dev;
+ struct drm_connector *connector;
+ int i;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ struct drm_fb_helper_connector *fb_helper_connector;
+
+ fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
+ if (!fb_helper_connector)
+ goto fail;
+ fb_helper_connector->connector = connector;
+ fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
+ }
return 0;
+fail:
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ kfree(fb_helper->connector_info[i]);
+ fb_helper->connector_info[i] = NULL;
+ }
+ fb_helper->connector_count = 0;
+ return -ENOMEM;
}
-EXPORT_SYMBOL(drm_fb_helper_add_connector);
+EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors);
/**
* drm_fb_helper_connector_parse_command_line - parse command line for connector
*
* enable/enable Digital/disable bit at the end
*/
-static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector,
+static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn,
const char *mode_option)
{
const char *name;
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;
+ struct drm_connector *connector = fb_helper_conn->connector;
- if (!fb_help_conn)
+ if (!fb_helper_conn)
return false;
- cmdline_mode = &fb_help_conn->cmdline_mode;
+ cmdline_mode = &fb_helper_conn->cmdline_mode;
if (!mode_option)
mode_option = fb_mode_option;
return true;
}
-int drm_fb_helper_parse_command_line(struct drm_device *dev)
+static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper)
{
- struct drm_connector *connector;
+ struct drm_fb_helper_connector *fb_helper_conn;
+ int i;
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ for (i = 0; i < fb_helper->connector_count; i++) {
char *option = NULL;
+ fb_helper_conn = fb_helper->connector_info[i];
+
/* do something on return - turn off connector maybe */
- if (fb_get_options(drm_get_connector_name(connector), &option))
+ if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option))
continue;
- drm_fb_helper_connector_parse_command_line(connector, option);
+ drm_fb_helper_connector_parse_command_line(fb_helper_conn, option);
}
return 0;
}
struct drm_fb_helper *fb_helper = info->par;
struct drm_device *dev = fb_helper->dev;
struct drm_crtc *crtc;
+ struct drm_crtc_helper_funcs *crtc_funcs;
struct drm_encoder *encoder;
int i;
* For each CRTC in this fb, turn the crtc on then,
* find all associated encoders and turn them on.
*/
+ mutex_lock(&dev->mode_config.mutex);
for (i = 0; i < fb_helper->crtc_count; i++) {
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct drm_crtc_helper_funcs *crtc_funcs =
- crtc->helper_private;
+ crtc = fb_helper->crtc_info[i].mode_set.crtc;
+ crtc_funcs = crtc->helper_private;
- /* Only mess with CRTCs in this fb */
- if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
- !crtc->enabled)
- continue;
+ if (!crtc->enabled)
+ continue;
- mutex_lock(&dev->mode_config.mutex);
- crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
- mutex_unlock(&dev->mode_config.mutex);
+ crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
- /* Found a CRTC on this fb, now find encoders */
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
- if (encoder->crtc == crtc) {
- struct drm_encoder_helper_funcs *encoder_funcs;
- encoder_funcs = encoder->helper_private;
- mutex_lock(&dev->mode_config.mutex);
- encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
- mutex_unlock(&dev->mode_config.mutex);
- }
+ /* Found a CRTC on this fb, now find encoders */
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ if (encoder->crtc == crtc) {
+ struct drm_encoder_helper_funcs *encoder_funcs;
+
+ encoder_funcs = encoder->helper_private;
+ encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
}
}
}
+ mutex_unlock(&dev->mode_config.mutex);
}
static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
struct drm_fb_helper *fb_helper = info->par;
struct drm_device *dev = fb_helper->dev;
struct drm_crtc *crtc;
+ struct drm_crtc_helper_funcs *crtc_funcs;
struct drm_encoder *encoder;
int i;
* For each CRTC in this fb, find all associated encoders
* and turn them off, then turn off the CRTC.
*/
+ mutex_lock(&dev->mode_config.mutex);
for (i = 0; i < fb_helper->crtc_count; i++) {
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct drm_crtc_helper_funcs *crtc_funcs =
- crtc->helper_private;
+ crtc = fb_helper->crtc_info[i].mode_set.crtc;
+ crtc_funcs = crtc->helper_private;
- /* Only mess with CRTCs in this fb */
- if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
- !crtc->enabled)
- continue;
+ if (!crtc->enabled)
+ continue;
- /* Found a CRTC on this fb, now find encoders */
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
- if (encoder->crtc == crtc) {
- struct drm_encoder_helper_funcs *encoder_funcs;
+ /* Found a CRTC on this fb, now find encoders */
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ if (encoder->crtc == crtc) {
+ struct drm_encoder_helper_funcs *encoder_funcs;
- encoder_funcs = encoder->helper_private;
- mutex_lock(&dev->mode_config.mutex);
- encoder_funcs->dpms(encoder, dpms_mode);
- mutex_unlock(&dev->mode_config.mutex);
- }
+ encoder_funcs = encoder->helper_private;
+ encoder_funcs->dpms(encoder, dpms_mode);
}
- mutex_lock(&dev->mode_config.mutex);
- crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
- mutex_unlock(&dev->mode_config.mutex);
}
+ crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
}
+ mutex_unlock(&dev->mode_config.mutex);
}
int drm_fb_helper_blank(int blank, struct fb_info *info)
{
int i;
+ for (i = 0; i < helper->connector_count; i++)
+ kfree(helper->connector_info[i]);
+ kfree(helper->connector_info);
for (i = 0; i < helper->crtc_count; i++)
kfree(helper->crtc_info[i].mode_set.connectors);
kfree(helper->crtc_info);
}
-int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count)
+int drm_fb_helper_init(struct drm_device *dev,
+ struct drm_fb_helper *fb_helper,
+ int crtc_count, int max_conn_count)
{
- struct drm_device *dev = helper->dev;
struct drm_crtc *crtc;
int ret = 0;
int i;
- helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
- if (!helper->crtc_info)
+ fb_helper->dev = dev;
+
+ INIT_LIST_HEAD(&fb_helper->kernel_fb_list);
+
+ fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
+ if (!fb_helper->crtc_info)
return -ENOMEM;
- helper->crtc_count = crtc_count;
+ fb_helper->crtc_count = crtc_count;
+ fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL);
+ if (!fb_helper->connector_info) {
+ kfree(fb_helper->crtc_info);
+ return -ENOMEM;
+ }
+ fb_helper->connector_count = 0;
for (i = 0; i < crtc_count; i++) {
- helper->crtc_info[i].mode_set.connectors =
+ fb_helper->crtc_info[i].mode_set.connectors =
kcalloc(max_conn_count,
sizeof(struct drm_connector *),
GFP_KERNEL);
- if (!helper->crtc_info[i].mode_set.connectors) {
+ if (!fb_helper->crtc_info[i].mode_set.connectors) {
ret = -ENOMEM;
goto out_free;
}
- helper->crtc_info[i].mode_set.num_connectors = 0;
+ fb_helper->crtc_info[i].mode_set.num_connectors = 0;
}
i = 0;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- helper->crtc_info[i].crtc_id = crtc->base.id;
- helper->crtc_info[i].mode_set.crtc = crtc;
+ fb_helper->crtc_info[i].crtc_id = crtc->base.id;
+ fb_helper->crtc_info[i].mode_set.crtc = crtc;
i++;
}
- helper->conn_limit = max_conn_count;
+ fb_helper->conn_limit = max_conn_count;
return 0;
out_free:
- drm_fb_helper_crtc_free(helper);
+ drm_fb_helper_crtc_free(fb_helper);
return -ENOMEM;
}
-EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
+EXPORT_SYMBOL(drm_fb_helper_init);
+
+void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
+{
+ if (!list_empty(&fb_helper->kernel_fb_list)) {
+ list_del(&fb_helper->kernel_fb_list);
+ if (list_empty(&kernel_fb_helper_list)) {
+ printk(KERN_INFO "drm: unregistered panic notifier\n");
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &paniced);
+ unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
+ }
+ }
+
+ drm_fb_helper_crtc_free(fb_helper);
+
+}
+EXPORT_SYMBOL(drm_fb_helper_fini);
static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, u16 regno, struct fb_info *info)
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
- struct drm_device *dev = fb_helper->dev;
+ struct drm_crtc_helper_funcs *crtc_funcs;
u16 *red, *green, *blue, *transp;
struct drm_crtc *crtc;
int i, rc = 0;
int start;
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
- for (i = 0; i < fb_helper->crtc_count; i++) {
- if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
- break;
- }
- if (i == fb_helper->crtc_count)
- continue;
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ crtc = fb_helper->crtc_info[i].mode_set.crtc;
+ crtc_funcs = crtc->helper_private;
red = cmap->red;
green = cmap->green;
}
EXPORT_SYMBOL(drm_fb_helper_setcmap);
-int drm_fb_helper_setcolreg(unsigned regno,
- unsigned red,
- unsigned green,
- unsigned blue,
- unsigned transp,
- struct fb_info *info)
-{
- struct drm_fb_helper *fb_helper = info->par;
- struct drm_device *dev = fb_helper->dev;
- struct drm_crtc *crtc;
- int i;
- int ret;
-
- if (regno > 255)
- return 1;
-
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
- for (i = 0; i < fb_helper->crtc_count; i++) {
- if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
- break;
- }
- if (i == fb_helper->crtc_count)
- continue;
-
- ret = setcolreg(crtc, red, green, blue, regno, info);
- if (ret)
- return ret;
-
- crtc_funcs->load_lut(crtc);
- }
- return 0;
-}
-EXPORT_SYMBOL(drm_fb_helper_setcolreg);
-
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
return -EINVAL;
}
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-
- for (i = 0; i < fb_helper->crtc_count; i++) {
- if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
- break;
- }
- if (i == fb_helper->crtc_count)
- continue;
-
- if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) {
- mutex_lock(&dev->mode_config.mutex);
- ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
+ mutex_lock(&dev->mode_config.mutex);
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ crtc = fb_helper->crtc_info[i].mode_set.crtc;
+ ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
+ if (ret) {
mutex_unlock(&dev->mode_config.mutex);
- if (ret)
- return ret;
+ return ret;
}
}
+ mutex_unlock(&dev->mode_config.mutex);
+
+ if (fb_helper->delayed_hotplug) {
+ fb_helper->delayed_hotplug = false;
+ drm_fb_helper_hotplug_event(fb_helper);
+ }
return 0;
}
EXPORT_SYMBOL(drm_fb_helper_set_par);
int ret = 0;
int i;
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- for (i = 0; i < fb_helper->crtc_count; i++) {
- if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
- break;
- }
-
- if (i == fb_helper->crtc_count)
- continue;
+ mutex_lock(&dev->mode_config.mutex);
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ crtc = fb_helper->crtc_info[i].mode_set.crtc;
modeset = &fb_helper->crtc_info[i].mode_set;
modeset->y = var->yoffset;
if (modeset->num_connectors) {
- mutex_lock(&dev->mode_config.mutex);
ret = crtc->funcs->set_config(modeset);
- mutex_unlock(&dev->mode_config.mutex);
if (!ret) {
info->var.xoffset = var->xoffset;
info->var.yoffset = var->yoffset;
}
}
}
+ mutex_unlock(&dev->mode_config.mutex);
return ret;
}
EXPORT_SYMBOL(drm_fb_helper_pan_display);
-int drm_fb_helper_single_fb_probe(struct drm_device *dev,
- int preferred_bpp,
- int (*fb_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_ptr))
+int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
+ int preferred_bpp)
{
- struct drm_crtc *crtc;
- struct drm_connector *connector;
- unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1;
- unsigned int surface_width = 0, surface_height = 0;
int new_fb = 0;
int crtc_count = 0;
- int ret, i, conn_count = 0;
+ int i;
struct fb_info *info;
- struct drm_framebuffer *fb;
- struct drm_mode_set *modeset = NULL;
- struct drm_fb_helper *fb_helper;
- uint32_t surface_depth = 24, surface_bpp = 32;
+ struct drm_fb_helper_surface_size sizes;
+ int gamma_size = 0;
+
+ memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size));
+ sizes.surface_depth = 24;
+ sizes.surface_bpp = 32;
+ sizes.fb_width = (unsigned)-1;
+ sizes.fb_height = (unsigned)-1;
/* if driver picks 8 or 16 by default use that
for both depth/bpp */
- if (preferred_bpp != surface_bpp) {
- surface_depth = surface_bpp = preferred_bpp;
+ if (preferred_bpp != sizes.surface_bpp) {
+ sizes.surface_depth = sizes.surface_bpp = preferred_bpp;
}
/* 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;
-
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i];
struct drm_fb_helper_cmdline_mode *cmdline_mode;
- if (!fb_help_conn)
- continue;
-
- cmdline_mode = &fb_help_conn->cmdline_mode;
+ cmdline_mode = &fb_helper_conn->cmdline_mode;
if (cmdline_mode->bpp_specified) {
switch (cmdline_mode->bpp) {
case 8:
- surface_depth = surface_bpp = 8;
+ sizes.surface_depth = sizes.surface_bpp = 8;
break;
case 15:
- surface_depth = 15;
- surface_bpp = 16;
+ sizes.surface_depth = 15;
+ sizes.surface_bpp = 16;
break;
case 16:
- surface_depth = surface_bpp = 16;
+ sizes.surface_depth = sizes.surface_bpp = 16;
break;
case 24:
- surface_depth = surface_bpp = 24;
+ sizes.surface_depth = sizes.surface_bpp = 24;
break;
case 32:
- surface_depth = 24;
- surface_bpp = 32;
+ sizes.surface_depth = 24;
+ sizes.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) {
- if (crtc->desired_mode->hdisplay < fb_width)
- fb_width = crtc->desired_mode->hdisplay;
-
- if (crtc->desired_mode->vdisplay < fb_height)
- fb_height = crtc->desired_mode->vdisplay;
-
- if (crtc->desired_mode->hdisplay > surface_width)
- surface_width = crtc->desired_mode->hdisplay;
-
- if (crtc->desired_mode->vdisplay > surface_height)
- surface_height = crtc->desired_mode->vdisplay;
- }
+ crtc_count = 0;
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ struct drm_display_mode *desired_mode;
+ desired_mode = fb_helper->crtc_info[i].desired_mode;
+
+ if (desired_mode) {
+ if (gamma_size == 0)
+ gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
+ if (desired_mode->hdisplay < sizes.fb_width)
+ sizes.fb_width = desired_mode->hdisplay;
+ if (desired_mode->vdisplay < sizes.fb_height)
+ sizes.fb_height = desired_mode->vdisplay;
+ if (desired_mode->hdisplay > sizes.surface_width)
+ sizes.surface_width = desired_mode->hdisplay;
+ if (desired_mode->vdisplay > sizes.surface_height)
+ sizes.surface_height = desired_mode->vdisplay;
crtc_count++;
}
}
- if (crtc_count == 0 || fb_width == -1 || fb_height == -1) {
+ if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) {
/* hmm everyone went away - assume VGA cable just fell out
and will come back later. */
- return 0;
+ DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n");
+ sizes.fb_width = sizes.surface_width = 1024;
+ sizes.fb_height = sizes.surface_height = 768;
}
- /* 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, surface_depth, surface_bpp,
- &fb);
- if (ret)
- return -EINVAL;
- new_fb = 1;
- } else {
- fb = list_first_entry(&dev->mode_config.fb_kernel_list,
- struct drm_framebuffer, filp_head);
-
- /* if someone hotplugs something bigger than we have already allocated, we are pwned.
- As really we can't resize an fbdev that is in the wild currently due to fbdev
- not really being designed for the lower layers moving stuff around under it.
- - so in the grand style of things - punt. */
- if ((fb->width < surface_width) ||
- (fb->height < surface_height)) {
- DRM_ERROR("Framebuffer not large enough to scale console onto.\n");
- return -EINVAL;
- }
- }
-
- info = fb->fbdev;
- fb_helper = info->par;
-
- crtc_count = 0;
- /* okay we need to setup new connector sets in the crtcs */
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- modeset = &fb_helper->crtc_info[crtc_count].mode_set;
- modeset->fb = fb;
- conn_count = 0;
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- if (connector->encoder)
- if (connector->encoder->crtc == modeset->crtc) {
- modeset->connectors[conn_count] = connector;
- conn_count++;
- if (conn_count > fb_helper->conn_limit)
- BUG();
- }
- }
-
- for (i = conn_count; i < fb_helper->conn_limit; i++)
- modeset->connectors[i] = NULL;
+ /* push down into drivers */
+ new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes);
+ if (new_fb < 0)
+ return new_fb;
- modeset->crtc = crtc;
- crtc_count++;
+ info = fb_helper->fbdev;
- modeset->num_connectors = conn_count;
- if (modeset->crtc->desired_mode) {
- if (modeset->mode)
- drm_mode_destroy(dev, modeset->mode);
- modeset->mode = drm_mode_duplicate(dev,
- modeset->crtc->desired_mode);
- }
+ /* set the fb pointer */
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb;
}
- fb_helper->crtc_count = crtc_count;
- fb_helper->fb = fb;
if (new_fb) {
info->var.pixclock = 0;
- ret = fb_alloc_cmap(&info->cmap, modeset->crtc->gamma_size, 0);
- if (ret)
- return ret;
if (register_framebuffer(info) < 0) {
- fb_dealloc_cmap(&info->cmap);
return -EINVAL;
}
+
+ printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
+ info->fix.id);
+
} else {
drm_fb_helper_set_par(info);
}
- printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
- info->fix.id);
/* Switch back to kernel console on panic */
/* multi card linked list maybe */
if (list_empty(&kernel_fb_helper_list)) {
- printk(KERN_INFO "registered panic notifier\n");
+ printk(KERN_INFO "drm: registered panic notifier\n");
atomic_notifier_chain_register(&panic_notifier_list,
&paniced);
register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
}
- list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
+ if (new_fb)
+ list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
+
return 0;
}
EXPORT_SYMBOL(drm_fb_helper_single_fb_probe);
-void drm_fb_helper_free(struct drm_fb_helper *helper)
-{
- list_del(&helper->kernel_fb_list);
- if (list_empty(&kernel_fb_helper_list)) {
- printk(KERN_INFO "unregistered panic notifier\n");
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &paniced);
- unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
- }
- drm_fb_helper_crtc_free(helper);
- fb_dealloc_cmap(&helper->fb->fbdev->cmap);
-}
-EXPORT_SYMBOL(drm_fb_helper_free);
-
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
uint32_t depth)
{
}
EXPORT_SYMBOL(drm_fb_helper_fill_fix);
-void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb,
+void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
uint32_t fb_width, uint32_t fb_height)
{
- info->pseudo_palette = fb->pseudo_palette;
+ struct drm_framebuffer *fb = fb_helper->fb;
+ info->pseudo_palette = fb_helper->pseudo_palette;
info->var.xres_virtual = fb->width;
info->var.yres_virtual = fb->height;
info->var.bits_per_pixel = fb->bits_per_pixel;
info->var.yres = fb_height;
}
EXPORT_SYMBOL(drm_fb_helper_fill_var);
+
+static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper,
+ uint32_t maxX,
+ uint32_t maxY)
+{
+ struct drm_connector *connector;
+ int count = 0;
+ int i;
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ connector = fb_helper->connector_info[i]->connector;
+ count += connector->funcs->fill_modes(connector, maxX, maxY);
+ }
+
+ return count;
+}
+
+static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height)
+{
+ struct drm_display_mode *mode;
+
+ list_for_each_entry(mode, &fb_connector->connector->modes, head) {
+ if (drm_mode_width(mode) > width ||
+ drm_mode_height(mode) > height)
+ continue;
+ if (mode->type & DRM_MODE_TYPE_PREFERRED)
+ return mode;
+ }
+ return NULL;
+}
+
+static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector)
+{
+ struct drm_fb_helper_cmdline_mode *cmdline_mode;
+ cmdline_mode = &fb_connector->cmdline_mode;
+ return cmdline_mode->specified;
+}
+
+static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
+ int width, int height)
+{
+ struct drm_fb_helper_cmdline_mode *cmdline_mode;
+ struct drm_display_mode *mode = NULL;
+
+ cmdline_mode = &fb_helper_conn->cmdline_mode;
+ 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, &fb_helper_conn->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(fb_helper_conn->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);
+ drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+ list_add(&mode->head, &fb_helper_conn->connector->modes);
+ return mode;
+}
+
+static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
+{
+ bool enable;
+
+ if (strict) {
+ enable = connector->status == connector_status_connected;
+ } else {
+ enable = connector->status != connector_status_disconnected;
+ }
+ return enable;
+}
+
+static void drm_enable_connectors(struct drm_fb_helper *fb_helper,
+ bool *enabled)
+{
+ bool any_enabled = false;
+ struct drm_connector *connector;
+ int i = 0;
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ connector = fb_helper->connector_info[i]->connector;
+ enabled[i] = drm_connector_enabled(connector, true);
+ DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
+ enabled[i] ? "yes" : "no");
+ any_enabled |= enabled[i];
+ }
+
+ if (any_enabled)
+ return;
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ connector = fb_helper->connector_info[i]->connector;
+ enabled[i] = drm_connector_enabled(connector, false);
+ }
+}
+
+static bool drm_target_cloned(struct drm_fb_helper *fb_helper,
+ struct drm_display_mode **modes,
+ bool *enabled, int width, int height)
+{
+ int count, i, j;
+ bool can_clone = false;
+ struct drm_fb_helper_connector *fb_helper_conn;
+ struct drm_display_mode *dmt_mode, *mode;
+
+ /* only contemplate cloning in the single crtc case */
+ if (fb_helper->crtc_count > 1)
+ return false;
+
+ count = 0;
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ if (enabled[i])
+ count++;
+ }
+
+ /* only contemplate cloning if more than one connector is enabled */
+ if (count <= 1)
+ return false;
+
+ /* check the command line or if nothing common pick 1024x768 */
+ can_clone = true;
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ if (!enabled[i])
+ continue;
+ fb_helper_conn = fb_helper->connector_info[i];
+ modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
+ if (!modes[i]) {
+ can_clone = false;
+ break;
+ }
+ for (j = 0; j < i; j++) {
+ if (!enabled[j])
+ continue;
+ if (!drm_mode_equal(modes[j], modes[i]))
+ can_clone = false;
+ }
+ }
+
+ if (can_clone) {
+ DRM_DEBUG_KMS("can clone using command line\n");
+ return true;
+ }
+
+ /* try and find a 1024x768 mode on each connector */
+ can_clone = true;
+ dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60);
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+
+ if (!enabled[i])
+ continue;
+
+ fb_helper_conn = fb_helper->connector_info[i];
+ list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) {
+ if (drm_mode_equal(mode, dmt_mode))
+ modes[i] = mode;
+ }
+ if (!modes[i])
+ can_clone = false;
+ }
+
+ if (can_clone) {
+ DRM_DEBUG_KMS("can clone using 1024x768\n");
+ return true;
+ }
+ DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
+ return false;
+}
+
+static bool drm_target_preferred(struct drm_fb_helper *fb_helper,
+ struct drm_display_mode **modes,
+ bool *enabled, int width, int height)
+{
+ struct drm_fb_helper_connector *fb_helper_conn;
+ int i;
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ fb_helper_conn = fb_helper->connector_info[i];
+
+ if (enabled[i] == false)
+ continue;
+
+ DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
+ fb_helper_conn->connector->base.id);
+
+ /* got for command line mode first */
+ modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
+ if (!modes[i]) {
+ DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
+ fb_helper_conn->connector->base.id);
+ modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height);
+ }
+ /* No preferred modes, pick one off the list */
+ if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) {
+ list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head)
+ break;
+ }
+ DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
+ "none");
+ }
+ return true;
+}
+
+static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
+ struct drm_fb_helper_crtc **best_crtcs,
+ struct drm_display_mode **modes,
+ int n, int width, int height)
+{
+ int c, o;
+ struct drm_device *dev = fb_helper->dev;
+ struct drm_connector *connector;
+ struct drm_connector_helper_funcs *connector_funcs;
+ struct drm_encoder *encoder;
+ struct drm_fb_helper_crtc *best_crtc;
+ int my_score, best_score, score;
+ struct drm_fb_helper_crtc **crtcs, *crtc;
+ struct drm_fb_helper_connector *fb_helper_conn;
+
+ if (n == fb_helper->connector_count)
+ return 0;
+
+ fb_helper_conn = fb_helper->connector_info[n];
+ connector = fb_helper_conn->connector;
+
+ best_crtcs[n] = NULL;
+ best_crtc = NULL;
+ best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height);
+ if (modes[n] == NULL)
+ return best_score;
+
+ crtcs = kzalloc(dev->mode_config.num_connector *
+ sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
+ if (!crtcs)
+ return best_score;
+
+ my_score = 1;
+ if (connector->status == connector_status_connected)
+ my_score++;
+ if (drm_has_cmdline_mode(fb_helper_conn))
+ my_score++;
+ if (drm_has_preferred_mode(fb_helper_conn, width, height))
+ my_score++;
+
+ connector_funcs = connector->helper_private;
+ encoder = connector_funcs->best_encoder(connector);
+ if (!encoder)
+ goto out;
+
+ /* select a crtc for this connector and then attempt to configure
+ remaining connectors */
+ for (c = 0; c < fb_helper->crtc_count; c++) {
+ crtc = &fb_helper->crtc_info[c];
+
+ if ((encoder->possible_crtcs & (1 << c)) == 0) {
+ continue;
+ }
+
+ for (o = 0; o < n; o++)
+ if (best_crtcs[o] == crtc)
+ break;
+
+ if (o < n) {
+ /* ignore cloning unless only a single crtc */
+ if (fb_helper->crtc_count > 1)
+ continue;
+
+ if (!drm_mode_equal(modes[o], modes[n]))
+ continue;
+ }
+
+ crtcs[n] = crtc;
+ memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *));
+ score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1,
+ width, height);
+ if (score > best_score) {
+ best_crtc = crtc;
+ best_score = score;
+ memcpy(best_crtcs, crtcs,
+ dev->mode_config.num_connector *
+ sizeof(struct drm_fb_helper_crtc *));
+ }
+ }
+out:
+ kfree(crtcs);
+ return best_score;
+}
+
+static void drm_setup_crtcs(struct drm_fb_helper *fb_helper)
+{
+ struct drm_device *dev = fb_helper->dev;
+ struct drm_fb_helper_crtc **crtcs;
+ struct drm_display_mode **modes;
+ struct drm_encoder *encoder;
+ struct drm_mode_set *modeset;
+ bool *enabled;
+ int width, height;
+ int i, ret;
+
+ DRM_DEBUG_KMS("\n");
+
+ width = dev->mode_config.max_width;
+ height = dev->mode_config.max_height;
+
+ /* clean out all the encoder/crtc combos */
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ encoder->crtc = NULL;
+ }
+
+ crtcs = kcalloc(dev->mode_config.num_connector,
+ sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
+ modes = kcalloc(dev->mode_config.num_connector,
+ sizeof(struct drm_display_mode *), GFP_KERNEL);
+ enabled = kcalloc(dev->mode_config.num_connector,
+ sizeof(bool), GFP_KERNEL);
+
+ drm_enable_connectors(fb_helper, enabled);
+
+ ret = drm_target_cloned(fb_helper, modes, enabled, width, height);
+ if (!ret) {
+ ret = drm_target_preferred(fb_helper, modes, enabled, width, height);
+ if (!ret)
+ DRM_ERROR("Unable to find initial modes\n");
+ }
+
+ DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height);
+
+ drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height);
+
+ /* need to set the modesets up here for use later */
+ /* fill out the connector<->crtc mappings into the modesets */
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ modeset = &fb_helper->crtc_info[i].mode_set;
+ modeset->num_connectors = 0;
+ }
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ struct drm_display_mode *mode = modes[i];
+ struct drm_fb_helper_crtc *fb_crtc = crtcs[i];
+ modeset = &fb_crtc->mode_set;
+
+ if (mode && fb_crtc) {
+ DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
+ mode->name, fb_crtc->mode_set.crtc->base.id);
+ fb_crtc->desired_mode = mode;
+ if (modeset->mode)
+ drm_mode_destroy(dev, modeset->mode);
+ modeset->mode = drm_mode_duplicate(dev,
+ fb_crtc->desired_mode);
+ modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector;
+ }
+ }
+
+ kfree(crtcs);
+ kfree(modes);
+ kfree(enabled);
+}
+
+/**
+ * drm_helper_initial_config - setup a sane initial connector configuration
+ * @dev: DRM device
+ *
+ * LOCKING:
+ * Called at init time, must take mode config lock.
+ *
+ * Scan the CRTCs and connectors and try to put together an initial setup.
+ * At the moment, this is a cloned configuration across all heads with
+ * a new framebuffer object as the backing store.
+ *
+ * RETURNS:
+ * Zero if everything went ok, nonzero otherwise.
+ */
+bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel)
+{
+ struct drm_device *dev = fb_helper->dev;
+ int count = 0;
+
+ /* disable all the possible outputs/crtcs before entering KMS mode */
+ drm_helper_disable_unused_functions(fb_helper->dev);
+
+ drm_fb_helper_parse_command_line(fb_helper);
+
+ count = drm_fb_helper_probe_connector_modes(fb_helper,
+ dev->mode_config.max_width,
+ dev->mode_config.max_height);
+ /*
+ * we shouldn't end up with no modes here.
+ */
+ if (count == 0) {
+ printk(KERN_INFO "No connectors reported connected with modes\n");
+ }
+ drm_setup_crtcs(fb_helper);
+
+ return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel);
+}
+EXPORT_SYMBOL(drm_fb_helper_initial_config);
+
+bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
+{
+ int count = 0;
+ u32 max_width, max_height, bpp_sel;
+ bool bound = false, crtcs_bound = false;
+ struct drm_crtc *crtc;
+
+ if (!fb_helper->fb)
+ return false;
+
+ list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) {
+ if (crtc->fb)
+ crtcs_bound = true;
+ if (crtc->fb == fb_helper->fb)
+ bound = true;
+ }
+
+ if (!bound && crtcs_bound) {
+ fb_helper->delayed_hotplug = true;
+ return false;
+ }
+ DRM_DEBUG_KMS("\n");
+
+ max_width = fb_helper->fb->width;
+ max_height = fb_helper->fb->height;
+ bpp_sel = fb_helper->fb->bits_per_pixel;
+
+ count = drm_fb_helper_probe_connector_modes(fb_helper, max_width,
+ max_height);
+ drm_setup_crtcs(fb_helper);
+
+ return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel);
+}
+EXPORT_SYMBOL(drm_fb_helper_hotplug_event);
+
git.openpandora.org / pandora-kernel.git / blobdiff