diff options
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 965 |
1 files changed, 679 insertions, 286 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 0f9e90552dc4..719662034bbf 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -27,7 +27,9 @@ * Dave Airlie <airlied@linux.ie> * Jesse Barnes <jesse.barnes@intel.com> */ +#include <linux/kernel.h> #include <linux/sysrq.h> +#include <linux/slab.h> #include <linux/fb.h> #include "drmP.h" #include "drm_crtc.h" @@ -40,30 +42,33 @@ MODULE_LICENSE("GPL and additional rights"); 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; - return 0; -} -EXPORT_SYMBOL(drm_fb_helper_add_connector); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + struct drm_fb_helper_connector *fb_helper_connector; -static int my_atoi(const char *name) -{ - int val = 0; + fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); + if (!fb_helper_connector) + goto fail; - for (;; name++) { - switch (*name) { - case '0' ... '9': - val = 10*val+(*name-'0'); - break; - default: - return val; - } + 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_single_add_all_connectors); /** * drm_fb_helper_connector_parse_command_line - parse command line for connector @@ -78,7 +83,7 @@ static int my_atoi(const char *name) * * 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; @@ -88,13 +93,13 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con 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; @@ -111,7 +116,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con namelen = i; if (!refresh_specified && !bpp_specified && !yres_specified) { - refresh = my_atoi(&name[i+1]); + refresh = simple_strtol(&name[i+1], NULL, 10); refresh_specified = 1; if (cvt || rb) cvt = 0; @@ -121,7 +126,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con case '-': namelen = i; if (!bpp_specified && !yres_specified) { - bpp = my_atoi(&name[i+1]); + bpp = simple_strtol(&name[i+1], NULL, 10); bpp_specified = 1; if (cvt || rb) cvt = 0; @@ -130,7 +135,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con break; case 'x': if (!yres_specified) { - yres = my_atoi(&name[i+1]); + yres = simple_strtol(&name[i+1], NULL, 10); yres_specified = 1; } else goto done; @@ -141,7 +146,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con cvt = 1; break; case 'R': - if (!cvt) + if (cvt) rb = 1; break; case 'm': @@ -170,7 +175,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *con } } if (i < 0 && yres_specified) { - xres = my_atoi(name); + xres = simple_strtol(name, NULL, 10); res_specified = 1; } done: @@ -217,18 +222,21 @@ done: 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; } @@ -256,7 +264,7 @@ bool drm_fb_helper_force_kernel_mode(void) int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, void *panic_str) { - DRM_ERROR("panic occurred, switching back to text console\n"); + printk(KERN_ERR "panic occurred, switching back to text console\n"); return drm_fb_helper_force_kernel_mode(); return 0; } @@ -297,6 +305,8 @@ static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { .help_msg = "force-fb(V)", .action_msg = "Restore framebuffer console", }; +#else +static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; #endif static void drm_fb_helper_on(struct fb_info *info) @@ -304,40 +314,44 @@ static void drm_fb_helper_on(struct fb_info *info) 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_connector *connector; struct drm_encoder *encoder; - int i; + int i, j; /* * 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; + /* Walk the connectors & encoders on this fb turning them on */ + for (j = 0; j < fb_helper->connector_count; j++) { + connector = fb_helper->connector_info[j]->connector; + connector->dpms = DRM_MODE_DPMS_ON; + drm_connector_property_set_value(connector, + dev->mode_config.dpms_property, + 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); - } + 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) @@ -345,39 +359,43 @@ 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_connector *connector; struct drm_encoder *encoder; - int i; + int i, j; /* * 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; + /* Walk the connectors on this fb and mark them off */ + for (j = 0; j < fb_helper->connector_count; j++) { + connector = fb_helper->connector_info[j]->connector; + connector->dpms = dpms_mode; + drm_connector_property_set_value(connector, + dev->mode_config.dpms_property, + dpms_mode); + } + /* 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) @@ -412,50 +430,81 @@ static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) { 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) @@ -519,20 +568,15 @@ static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 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; @@ -560,41 +604,6 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) } 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) { @@ -694,27 +703,25 @@ int drm_fb_helper_set_par(struct fb_info *info) int i; if (var->pixclock != 0) { - DRM_ERROR("PIXEL CLCOK SET\n"); + DRM_ERROR("PIXEL CLOCK SET\n"); 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); @@ -729,14 +736,9 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 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; @@ -744,209 +746,138 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 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) { @@ -965,10 +896,11 @@ void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, } 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; @@ -1036,3 +968,464 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, 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: + if (cmdline_mode->cvt) + 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); + else + mode = drm_gtf_mode(fb_helper_conn->connector->dev, + cmdline_mode->xres, cmdline_mode->yres, + cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, + 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); + |