diff options
Diffstat (limited to 'sys/dev/drm2/drm_fb_helper.c')
| -rw-r--r-- | sys/dev/drm2/drm_fb_helper.c | 1490 |
1 files changed, 0 insertions, 1490 deletions
diff --git a/sys/dev/drm2/drm_fb_helper.c b/sys/dev/drm2/drm_fb_helper.c deleted file mode 100644 index cf98d2f9dfecf..0000000000000 --- a/sys/dev/drm2/drm_fb_helper.c +++ /dev/null @@ -1,1490 +0,0 @@ -/* - * Copyright (c) 2006-2009 Red Hat Inc. - * Copyright (c) 2006-2008 Intel Corporation - * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> - * - * DRM framebuffer helper functions - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting documentation, and - * that the name of the copyright holders not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. The copyright holders make no representations - * about the suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE - * OF THIS SOFTWARE. - * - * Authors: - * Dave Airlie <airlied@linux.ie> - * Jesse Barnes <jesse.barnes@intel.com> - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <dev/drm2/drmP.h> -#include <dev/drm2/drm_crtc.h> -#include <dev/drm2/drm_fb_helper.h> -#include <dev/drm2/drm_crtc_helper.h> - -MODULE_AUTHOR("David Airlie, Jesse Barnes"); -MODULE_DESCRIPTION("DRM KMS helper"); -MODULE_LICENSE("GPL and additional rights"); - -static DRM_LIST_HEAD(kernel_fb_helper_list); - -#include <sys/kdb.h> -#include <sys/param.h> -#include <sys/systm.h> - -struct vt_kms_softc { - struct drm_fb_helper *fb_helper; - struct task fb_mode_task; -}; - -/* Call restore out of vt(9) locks. */ -static void -vt_restore_fbdev_mode(void *arg, int pending) -{ - struct drm_fb_helper *fb_helper; - struct vt_kms_softc *sc; - - sc = (struct vt_kms_softc *)arg; - fb_helper = sc->fb_helper; - sx_xlock(&fb_helper->dev->mode_config.mutex); - drm_fb_helper_restore_fbdev_mode(fb_helper); - sx_xunlock(&fb_helper->dev->mode_config.mutex); -} - -static int -vt_kms_postswitch(void *arg) -{ - struct vt_kms_softc *sc; - - sc = (struct vt_kms_softc *)arg; - - if (!kdb_active && panicstr == NULL) - taskqueue_enqueue(taskqueue_thread, &sc->fb_mode_task); - else - drm_fb_helper_restore_fbdev_mode(sc->fb_helper); - - return (0); -} - -struct fb_info * -framebuffer_alloc() -{ - struct fb_info *info; - struct vt_kms_softc *sc; - - info = malloc(sizeof(*info), DRM_MEM_KMS, M_WAITOK | M_ZERO); - - sc = malloc(sizeof(*sc), DRM_MEM_KMS, M_WAITOK | M_ZERO); - TASK_INIT(&sc->fb_mode_task, 0, vt_restore_fbdev_mode, sc); - - info->fb_priv = sc; - info->enter = &vt_kms_postswitch; - - return (info); -} - -void -framebuffer_release(struct fb_info *info) -{ - - free(info->fb_priv, DRM_MEM_KMS); - free(info, DRM_MEM_KMS); -} - -static int -fb_get_options(const char *connector_name, char **option) -{ - char tunable[64]; - - /* - * A user may use loader tunables to set a specific mode for the - * console. Tunables are read in the following order: - * 1. kern.vt.fb.modes.$connector_name - * 2. kern.vt.fb.default_mode - * - * Example of a mode specific to the LVDS connector: - * kern.vt.fb.modes.LVDS="1024x768" - * - * Example of a mode applied to all connectors not having a - * connector-specific mode: - * kern.vt.fb.default_mode="640x480" - */ - snprintf(tunable, sizeof(tunable), "kern.vt.fb.modes.%s", - connector_name); - DRM_INFO("Connector %s: get mode from tunables:\n", connector_name); - DRM_INFO(" - %s\n", tunable); - DRM_INFO(" - kern.vt.fb.default_mode\n"); - *option = kern_getenv(tunable); - if (*option == NULL) - *option = kern_getenv("kern.vt.fb.default_mode"); - - return (*option != NULL ? 0 : -ENOENT); -} - -/** - * DOC: fbdev helpers - * - * The fb helper functions are useful to provide an fbdev on top of a drm kernel - * mode setting driver. They can be used mostly independantely from the crtc - * helper functions used by many drivers to implement the kernel mode setting - * interfaces. - */ - -/* simple single crtc case helper function */ -int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) -{ - 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 = malloc(sizeof(struct drm_fb_helper_connector), - DRM_MEM_KMS, M_NOWAIT | M_ZERO); - 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++) { - free(fb_helper->connector_info[i], DRM_MEM_KMS); - fb_helper->connector_info[i] = NULL; - } - fb_helper->connector_count = 0; - return -ENOMEM; -} -EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); - -static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) -{ - struct drm_fb_helper_connector *fb_helper_conn; - int i; - - for (i = 0; i < fb_helper->connector_count; i++) { - struct drm_cmdline_mode *mode; - struct drm_connector *connector; - char *option = NULL; - - fb_helper_conn = fb_helper->connector_info[i]; - connector = fb_helper_conn->connector; - mode = &fb_helper_conn->cmdline_mode; - - /* do something on return - turn off connector maybe */ - if (fb_get_options(drm_get_connector_name(connector), &option)) - continue; - - if (drm_mode_parse_command_line_for_connector(option, - connector, - mode)) { - if (mode->force) { - const char *s; - switch (mode->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 = mode->force; - } - - DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", - drm_get_connector_name(connector), - mode->xres, mode->yres, - mode->refresh_specified ? mode->refresh : 60, - mode->rb ? " reduced blanking" : "", - mode->margins ? " with margins" : "", - mode->interlace ? " interlaced" : ""); - } - - freeenv(option); - } - return 0; -} - -#if 0 && defined(FREEBSD_NOTYET) -static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) -{ - uint16_t *r_base, *g_base, *b_base; - int i; - - r_base = crtc->gamma_store; - g_base = r_base + crtc->gamma_size; - b_base = g_base + crtc->gamma_size; - - for (i = 0; i < crtc->gamma_size; i++) - helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); -} - -static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) -{ - uint16_t *r_base, *g_base, *b_base; - - if (crtc->funcs->gamma_set == NULL) - return; - - r_base = crtc->gamma_store; - g_base = r_base + crtc->gamma_size; - b_base = g_base + crtc->gamma_size; - - crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); -} - -int drm_fb_helper_debug_enter(struct fb_info *info) -{ - struct drm_fb_helper *helper = info->par; - struct drm_crtc_helper_funcs *funcs; - int i; - - if (list_empty(&kernel_fb_helper_list)) - return false; - - list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { - for (i = 0; i < helper->crtc_count; i++) { - struct drm_mode_set *mode_set = - &helper->crtc_info[i].mode_set; - - if (!mode_set->crtc->enabled) - continue; - - funcs = mode_set->crtc->helper_private; - drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); - funcs->mode_set_base_atomic(mode_set->crtc, - mode_set->fb, - mode_set->x, - mode_set->y, - ENTER_ATOMIC_MODE_SET); - } - } - - return 0; -} -EXPORT_SYMBOL(drm_fb_helper_debug_enter); - -/* Find the real fb for a given fb helper CRTC */ -static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) -{ - struct drm_device *dev = crtc->dev; - struct drm_crtc *c; - - list_for_each_entry(c, &dev->mode_config.crtc_list, head) { - if (crtc->base.id == c->base.id) - return c->fb; - } - - return NULL; -} - -int drm_fb_helper_debug_leave(struct fb_info *info) -{ - struct drm_fb_helper *helper = info->par; - struct drm_crtc *crtc; - struct drm_crtc_helper_funcs *funcs; - struct drm_framebuffer *fb; - int i; - - for (i = 0; i < helper->crtc_count; i++) { - struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; - crtc = mode_set->crtc; - funcs = crtc->helper_private; - fb = drm_mode_config_fb(crtc); - - if (!crtc->enabled) - continue; - - if (!fb) { - DRM_ERROR("no fb to restore??\n"); - continue; - } - - drm_fb_helper_restore_lut_atomic(mode_set->crtc); - funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, - crtc->y, LEAVE_ATOMIC_MODE_SET); - } - - return 0; -} -EXPORT_SYMBOL(drm_fb_helper_debug_leave); -#endif /* FREEBSD_NOTYET */ - -bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) -{ - bool error = false; - int i, ret; - - for (i = 0; i < fb_helper->crtc_count; i++) { - struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; - ret = mode_set->crtc->funcs->set_config(mode_set); - if (ret) - error = true; - } - return error; -} -EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); - -static bool drm_fb_helper_force_kernel_mode(void) -{ - bool ret, error = false; - struct drm_fb_helper *helper; - - if (list_empty(&kernel_fb_helper_list)) - return false; - - list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { - if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) - continue; - - ret = drm_fb_helper_restore_fbdev_mode(helper); - if (ret) - error = true; - } - return error; -} - -#if 0 && defined(FREEBSD_NOTYET) -int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, - void *panic_str) -{ - /* - * It's a waste of time and effort to switch back to text console - * if the kernel should reboot before panic messages can be seen. - */ - if (panic_timeout < 0) - return 0; - - pr_err("panic occurred, switching back to text console\n"); - return drm_fb_helper_force_kernel_mode(); -} -EXPORT_SYMBOL(drm_fb_helper_panic); - -static struct notifier_block paniced = { - .notifier_call = drm_fb_helper_panic, -}; -#endif /* FREEBSD_NOTYET */ - -/** - * drm_fb_helper_restore - restore the framebuffer console (kernel) config - * - * Restore's the kernel's fbcon mode, used for lastclose & panic paths. - */ -void drm_fb_helper_restore(void) -{ - bool ret; - ret = drm_fb_helper_force_kernel_mode(); - if (ret == true) - DRM_ERROR("Failed to restore crtc configuration\n"); -} -EXPORT_SYMBOL(drm_fb_helper_restore); - -#ifdef __linux__ -#ifdef CONFIG_MAGIC_SYSRQ -static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) -{ - drm_fb_helper_restore(); -} -static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); - -static void drm_fb_helper_sysrq(int dummy1) -{ - schedule_work(&drm_fb_helper_restore_work); -} - -static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { - .handler = drm_fb_helper_sysrq, - .help_msg = "force-fb(V)", - .action_msg = "Restore framebuffer console", -}; -#else -static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; -#endif -#endif - -#if 0 && defined(FREEBSD_NOTYET) -static void drm_fb_helper_dpms(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_connector *connector; - int i, j; - - /* - * For each CRTC in this fb, turn the connectors on/off. - */ - sx_xlock(&dev->mode_config.mutex); - for (i = 0; i < fb_helper->crtc_count; i++) { - crtc = fb_helper->crtc_info[i].mode_set.crtc; - - if (!crtc->enabled) - continue; - - /* Walk the connectors & encoders on this fb turning them on/off */ - for (j = 0; j < fb_helper->connector_count; j++) { - connector = fb_helper->connector_info[j]->connector; - connector->funcs->dpms(connector, dpms_mode); - drm_object_property_set_value(&connector->base, - dev->mode_config.dpms_property, dpms_mode); - } - } - sx_xunlock(&dev->mode_config.mutex); -} - -int drm_fb_helper_blank(int blank, struct fb_info *info) -{ - switch (blank) { - /* Display: On; HSync: On, VSync: On */ - case FB_BLANK_UNBLANK: - drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); - break; - /* Display: Off; HSync: On, VSync: On */ - case FB_BLANK_NORMAL: - drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); - break; - /* Display: Off; HSync: Off, VSync: On */ - case FB_BLANK_HSYNC_SUSPEND: - drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); - break; - /* Display: Off; HSync: On, VSync: Off */ - case FB_BLANK_VSYNC_SUSPEND: - drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); - break; - /* Display: Off; HSync: Off, VSync: Off */ - case FB_BLANK_POWERDOWN: - drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); - break; - } - return 0; -} -EXPORT_SYMBOL(drm_fb_helper_blank); -#endif /* FREEBSD_NOTYET */ - -static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) -{ - int i; - - for (i = 0; i < helper->connector_count; i++) - free(helper->connector_info[i], DRM_MEM_KMS); - free(helper->connector_info, DRM_MEM_KMS); - for (i = 0; i < helper->crtc_count; i++) { - free(helper->crtc_info[i].mode_set.connectors, DRM_MEM_KMS); - if (helper->crtc_info[i].mode_set.mode) - drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); - } - free(helper->crtc_info, DRM_MEM_KMS); -} - -int drm_fb_helper_init(struct drm_device *dev, - struct drm_fb_helper *fb_helper, - int crtc_count, int max_conn_count) -{ - struct drm_crtc *crtc; - int i; - - fb_helper->dev = dev; - - INIT_LIST_HEAD(&fb_helper->kernel_fb_list); - - fb_helper->crtc_info = malloc(crtc_count * sizeof(struct drm_fb_helper_crtc), - DRM_MEM_KMS, M_NOWAIT | M_ZERO); - if (!fb_helper->crtc_info) - return -ENOMEM; - - fb_helper->crtc_count = crtc_count; - fb_helper->connector_info = malloc(dev->mode_config.num_connector * sizeof(struct drm_fb_helper_connector *), - DRM_MEM_KMS, M_NOWAIT | M_ZERO); - if (!fb_helper->connector_info) { - free(fb_helper->crtc_info, DRM_MEM_KMS); - return -ENOMEM; - } - fb_helper->connector_count = 0; - - for (i = 0; i < crtc_count; i++) { - fb_helper->crtc_info[i].mode_set.connectors = - malloc(max_conn_count * - sizeof(struct drm_connector *), - DRM_MEM_KMS, M_NOWAIT | M_ZERO); - - if (!fb_helper->crtc_info[i].mode_set.connectors) - goto out_free; - fb_helper->crtc_info[i].mode_set.num_connectors = 0; - } - - i = 0; - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - fb_helper->crtc_info[i].mode_set.crtc = crtc; - i++; - } - - return 0; -out_free: - drm_fb_helper_crtc_free(fb_helper); - return -ENOMEM; -} -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 0 && defined(FREEBSD_NOTYET) - if (list_empty(&kernel_fb_helper_list)) { - pr_info("drm: unregistered panic notifier\n"); - atomic_notifier_chain_unregister(&panic_notifier_list, - &paniced); - unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); - } -#endif /* FREEBSD_NOTYET */ - } - - drm_fb_helper_crtc_free(fb_helper); - -} -EXPORT_SYMBOL(drm_fb_helper_fini); - -#if 0 && defined(FREEBSD_NOTYET) -static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, - u16 blue, u16 regno, struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_framebuffer *fb = fb_helper->fb; - int pindex; - - if (info->fix.visual == FB_VISUAL_TRUECOLOR) { - u32 *palette; - u32 value; - /* place color in pseudopalette */ - if (regno > 16) - return -EINVAL; - palette = (u32 *)info->pseudo_palette; - red >>= (16 - info->var.red.length); - green >>= (16 - info->var.green.length); - blue >>= (16 - info->var.blue.length); - value = (red << info->var.red.offset) | - (green << info->var.green.offset) | - (blue << info->var.blue.offset); - if (info->var.transp.length > 0) { - u32 mask = (1 << info->var.transp.length) - 1; - mask <<= info->var.transp.offset; - value |= mask; - } - palette[regno] = value; - return 0; - } - - pindex = regno; - - if (fb->bits_per_pixel == 16) { - pindex = regno << 3; - - if (fb->depth == 16 && regno > 63) - return -EINVAL; - if (fb->depth == 15 && regno > 31) - return -EINVAL; - - if (fb->depth == 16) { - u16 r, g, b; - int i; - if (regno < 32) { - for (i = 0; i < 8; i++) - fb_helper->funcs->gamma_set(crtc, red, - green, blue, pindex + i); - } - - fb_helper->funcs->gamma_get(crtc, &r, - &g, &b, - pindex >> 1); - - for (i = 0; i < 4; i++) - fb_helper->funcs->gamma_set(crtc, r, - green, b, - (pindex >> 1) + i); - } - } - - if (fb->depth != 16) - fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); - return 0; -} - -int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_crtc_helper_funcs *crtc_funcs; - u16 *red, *green, *blue, *transp; - struct drm_crtc *crtc; - int i, j, rc = 0; - int start; - - 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; - blue = cmap->blue; - transp = cmap->transp; - start = cmap->start; - - for (j = 0; j < cmap->len; j++) { - u16 hred, hgreen, hblue, htransp = 0xffff; - - hred = *red++; - hgreen = *green++; - hblue = *blue++; - - if (transp) - htransp = *transp++; - - rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); - if (rc) - return rc; - } - crtc_funcs->load_lut(crtc); - } - return rc; -} -EXPORT_SYMBOL(drm_fb_helper_setcmap); - -int drm_fb_helper_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_framebuffer *fb = fb_helper->fb; - int depth; - - if (var->pixclock != 0 || in_dbg_master()) - return -EINVAL; - - /* Need to resize the fb object !!! */ - if (var->bits_per_pixel > fb->bits_per_pixel || - var->xres > fb->width || var->yres > fb->height || - var->xres_virtual > fb->width || var->yres_virtual > fb->height) { - DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " - "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", - var->xres, var->yres, var->bits_per_pixel, - var->xres_virtual, var->yres_virtual, - fb->width, fb->height, fb->bits_per_pixel); - return -EINVAL; - } - - switch (var->bits_per_pixel) { - case 16: - depth = (var->green.length == 6) ? 16 : 15; - break; - case 32: - depth = (var->transp.length > 0) ? 32 : 24; - break; - default: - depth = var->bits_per_pixel; - break; - } - - switch (depth) { - case 8: - var->red.offset = 0; - var->green.offset = 0; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 15: - var->red.offset = 10; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 5; - var->blue.length = 5; - var->transp.length = 1; - var->transp.offset = 15; - break; - case 16: - var->red.offset = 11; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 6; - var->blue.length = 5; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 24: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 32: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 8; - var->transp.offset = 24; - break; - default: - return -EINVAL; - } - return 0; -} -EXPORT_SYMBOL(drm_fb_helper_check_var); - -/* this will let fbcon do the mode init */ -int drm_fb_helper_set_par(struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_device *dev = fb_helper->dev; - struct fb_var_screeninfo *var = &info->var; - struct drm_crtc *crtc; - int ret; - int i; - - if (var->pixclock != 0) { - DRM_ERROR("PIXEL CLOCK SET\n"); - return -EINVAL; - } - - sx_xlock(&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) { - sx_xunlock(&dev->mode_config.mutex); - return ret; - } - } - sx_xunlock(&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 drm_fb_helper_pan_display(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_device *dev = fb_helper->dev; - struct drm_mode_set *modeset; - struct drm_crtc *crtc; - int ret = 0; - int i; - - sx_xlock(&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->x = var->xoffset; - modeset->y = var->yoffset; - - if (modeset->num_connectors) { - ret = crtc->funcs->set_config(modeset); - if (!ret) { - info->var.xoffset = var->xoffset; - info->var.yoffset = var->yoffset; - } - } - } - sx_xunlock(&dev->mode_config.mutex); - return ret; -} -EXPORT_SYMBOL(drm_fb_helper_pan_display); -#endif /* FREEBSD_NOTYET */ - -int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, - int preferred_bpp) -{ - int new_fb = 0; - int crtc_count = 0; - int i; - struct fb_info *info; - struct drm_fb_helper_surface_size sizes; - int gamma_size = 0; -#if defined(__FreeBSD__) - struct drm_crtc *crtc; - struct drm_device *dev; - int ret; - device_t kdev; -#endif - - 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 != 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 */ - for (i = 0; i < fb_helper->connector_count; i++) { - struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; - struct drm_cmdline_mode *cmdline_mode; - - cmdline_mode = &fb_helper_conn->cmdline_mode; - - if (cmdline_mode->bpp_specified) { - switch (cmdline_mode->bpp) { - case 8: - sizes.surface_depth = sizes.surface_bpp = 8; - break; - case 15: - sizes.surface_depth = 15; - sizes.surface_bpp = 16; - break; - case 16: - sizes.surface_depth = sizes.surface_bpp = 16; - break; - case 24: - sizes.surface_depth = sizes.surface_bpp = 24; - break; - case 32: - sizes.surface_depth = 24; - sizes.surface_bpp = 32; - break; - } - break; - } - } - - 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 || sizes.fb_width == -1 || sizes.fb_height == -1) { - /* hmm everyone went away - assume VGA cable just fell out - and will come back later. */ - 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; - } - - /* push down into drivers */ - new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); - if (new_fb < 0) - return new_fb; - - info = fb_helper->fbdev; - - kdev = fb_helper->dev->dev; - info->fb_video_dev = device_get_parent(kdev); - - /* set the fb pointer */ - for (i = 0; i < fb_helper->crtc_count; i++) - fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; - -#if defined(__FreeBSD__) - if (new_fb) { - int ret; - - info->fb_fbd_dev = device_add_child(kdev, "fbd", - device_get_unit(kdev)); - if (info->fb_fbd_dev != NULL) - ret = device_probe_and_attach(info->fb_fbd_dev); - else - ret = ENODEV; -#ifdef DEV_VT - if (ret != 0) - DRM_ERROR("Failed to attach fbd device: %d\n", ret); -#endif - } else { - /* Modified version of drm_fb_helper_set_par() */ - dev = fb_helper->dev; - sx_xlock(&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) { - sx_xunlock(&dev->mode_config.mutex); - return ret; - } - } - sx_xunlock(&dev->mode_config.mutex); - - if (fb_helper->delayed_hotplug) { - fb_helper->delayed_hotplug = false; - drm_fb_helper_hotplug_event(fb_helper); - } - } -#else - if (new_fb) { - info->var.pixclock = 0; - if (register_framebuffer(info) < 0) - return -EINVAL; - - dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n", - info->node, info->fix.id); - - } else { - drm_fb_helper_set_par(info); - } -#endif - -#if 0 && defined(FREEBSD_NOTYET) - /* Switch back to kernel console on panic */ - /* multi card linked list maybe */ - if (list_empty(&kernel_fb_helper_list)) { - dev_info(fb_helper->dev->dev, "registered panic notifier\n"); - atomic_notifier_chain_register(&panic_notifier_list, - &paniced); - register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); - } -#endif /* FREEBSD_NOTYET */ - 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_fill_fix(struct fb_info *info, uint32_t pitch, - uint32_t depth) -{ - info->fb_stride = pitch; - - return; -} -EXPORT_SYMBOL(drm_fb_helper_fill_fix); - -void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, - uint32_t fb_width, uint32_t fb_height) -{ - struct drm_framebuffer *fb = fb_helper->fb; - struct vt_kms_softc *sc; - - info->fb_name = device_get_nameunit(fb_helper->dev->dev); - info->fb_width = fb->width; - info->fb_height = fb->height; - info->fb_depth = fb->bits_per_pixel; - - sc = (struct vt_kms_softc *)info->fb_priv; - sc->fb_helper = fb_helper; -} -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_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_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_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, - cmdline_mode); - 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, false); - - 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 = malloc(dev->mode_config.num_connector * - sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, M_NOWAIT | M_ZERO); - 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: - free(crtcs, DRM_MEM_KMS); - 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_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; - - crtcs = malloc(dev->mode_config.num_connector * - sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, M_NOWAIT | M_ZERO); - modes = malloc(dev->mode_config.num_connector * - sizeof(struct drm_display_mode *), DRM_MEM_KMS, M_NOWAIT | M_ZERO); - enabled = malloc(dev->mode_config.num_connector * - sizeof(bool), DRM_MEM_KMS, M_NOWAIT | M_ZERO); - if (!crtcs || !modes || !enabled) { - DRM_ERROR("Memory allocation failed\n"); - goto out; - } - - - 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; - } - } - -out: - free(crtcs, DRM_MEM_KMS); - free(modes, DRM_MEM_KMS); - free(enabled, DRM_MEM_KMS); -} - -/** - * drm_helper_initial_config - setup a sane initial connector configuration - * @fb_helper: fb_helper device struct - * @bpp_sel: bpp value to use for the framebuffer configuration - * - * LOCKING: - * Called at init time by the driver to set up the @fb_helper initial - * configuration, must take the mode config lock. - * - * Scans the CRTCs and connectors and tries 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) - dev_info(fb_helper->dev->dev, "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); - -/** - * drm_fb_helper_hotplug_event - respond to a hotplug notification by - * probing all the outputs attached to the fb - * @fb_helper: the drm_fb_helper - * - * LOCKING: - * Called at runtime, must take mode config lock. - * - * Scan the connectors attached to the fb_helper and try to put together a - * setup after *notification of a change in output configuration. - * - * RETURNS: - * 0 on success and a non-zero error code otherwise. - */ -int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) -{ - struct drm_device *dev = fb_helper->dev; - int count = 0; - u32 max_width, max_height, bpp_sel; - int bound = 0, crtcs_bound = 0; - struct drm_crtc *crtc; - - if (!fb_helper->fb) - return 0; - - sx_xlock(&dev->mode_config.mutex); - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - if (crtc->fb) - crtcs_bound++; - if (crtc->fb == fb_helper->fb) - bound++; - } - - if (bound < crtcs_bound) { - fb_helper->delayed_hotplug = true; - sx_xunlock(&dev->mode_config.mutex); - return 0; - } - 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); - sx_xunlock(&dev->mode_config.mutex); - - return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); -} -EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |