diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/dss/apply.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/apply.c | 1702 |
1 files changed, 0 insertions, 1702 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/apply.c b/drivers/gpu/drm/omapdrm/dss/apply.c deleted file mode 100644 index 663ccc3bf4e5..000000000000 --- a/drivers/gpu/drm/omapdrm/dss/apply.c +++ /dev/null @@ -1,1702 +0,0 @@ -/* - * Copyright (C) 2011 Texas Instruments - * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#define DSS_SUBSYS_NAME "APPLY" - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/jiffies.h> - -#include <video/omapdss.h> - -#include "dss.h" -#include "dss_features.h" -#include "dispc-compat.h" - -/* - * We have 4 levels of cache for the dispc settings. First two are in SW and - * the latter two in HW. - * - * set_info() - * v - * +--------------------+ - * | user_info | - * +--------------------+ - * v - * apply() - * v - * +--------------------+ - * | info | - * +--------------------+ - * v - * write_regs() - * v - * +--------------------+ - * | shadow registers | - * +--------------------+ - * v - * VFP or lcd/digit_enable - * v - * +--------------------+ - * | registers | - * +--------------------+ - */ - -struct ovl_priv_data { - - bool user_info_dirty; - struct omap_overlay_info user_info; - - bool info_dirty; - struct omap_overlay_info info; - - bool shadow_info_dirty; - - bool extra_info_dirty; - bool shadow_extra_info_dirty; - - bool enabled; - u32 fifo_low, fifo_high; - - /* - * True if overlay is to be enabled. Used to check and calculate configs - * for the overlay before it is enabled in the HW. - */ - bool enabling; -}; - -struct mgr_priv_data { - - bool user_info_dirty; - struct omap_overlay_manager_info user_info; - - bool info_dirty; - struct omap_overlay_manager_info info; - - bool shadow_info_dirty; - - /* If true, GO bit is up and shadow registers cannot be written. - * Never true for manual update displays */ - bool busy; - - /* If true, dispc output is enabled */ - bool updating; - - /* If true, a display is enabled using this manager */ - bool enabled; - - bool extra_info_dirty; - bool shadow_extra_info_dirty; - - struct omap_video_timings timings; - struct dss_lcd_mgr_config lcd_config; - - void (*framedone_handler)(void *); - void *framedone_handler_data; -}; - -static struct { - struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS]; - struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS]; - - bool irq_enabled; -} dss_data; - -/* protects dss_data */ -static spinlock_t data_lock; -/* lock for blocking functions */ -static DEFINE_MUTEX(apply_lock); -static DECLARE_COMPLETION(extra_updated_completion); - -static void dss_register_vsync_isr(void); - -static struct ovl_priv_data *get_ovl_priv(struct omap_overlay *ovl) -{ - return &dss_data.ovl_priv_data_array[ovl->id]; -} - -static struct mgr_priv_data *get_mgr_priv(struct omap_overlay_manager *mgr) -{ - return &dss_data.mgr_priv_data_array[mgr->id]; -} - -static void apply_init_priv(void) -{ - const int num_ovls = dss_feat_get_num_ovls(); - struct mgr_priv_data *mp; - int i; - - spin_lock_init(&data_lock); - - for (i = 0; i < num_ovls; ++i) { - struct ovl_priv_data *op; - - op = &dss_data.ovl_priv_data_array[i]; - - op->info.color_mode = OMAP_DSS_COLOR_RGB16; - op->info.rotation_type = OMAP_DSS_ROT_DMA; - - op->info.global_alpha = 255; - - switch (i) { - case 0: - op->info.zorder = 0; - break; - case 1: - op->info.zorder = - dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 3 : 0; - break; - case 2: - op->info.zorder = - dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 2 : 0; - break; - case 3: - op->info.zorder = - dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 1 : 0; - break; - } - - op->user_info = op->info; - } - - /* - * Initialize some of the lcd_config fields for TV manager, this lets - * us prevent checking if the manager is LCD or TV at some places - */ - mp = &dss_data.mgr_priv_data_array[OMAP_DSS_CHANNEL_DIGIT]; - - mp->lcd_config.video_port_width = 24; - mp->lcd_config.clock_info.lck_div = 1; - mp->lcd_config.clock_info.pck_div = 1; -} - -/* - * A LCD manager's stallmode decides whether it is in manual or auto update. TV - * manager is always auto update, stallmode field for TV manager is false by - * default - */ -static bool ovl_manual_update(struct omap_overlay *ovl) -{ - struct mgr_priv_data *mp = get_mgr_priv(ovl->manager); - - return mp->lcd_config.stallmode; -} - -static bool mgr_manual_update(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - return mp->lcd_config.stallmode; -} - -static int dss_check_settings_low(struct omap_overlay_manager *mgr, - bool applying) -{ - struct omap_overlay_info *oi; - struct omap_overlay_manager_info *mi; - struct omap_overlay *ovl; - struct omap_overlay_info *ois[MAX_DSS_OVERLAYS]; - struct ovl_priv_data *op; - struct mgr_priv_data *mp; - - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - return 0; - - if (applying && mp->user_info_dirty) - mi = &mp->user_info; - else - mi = &mp->info; - - /* collect the infos to be tested into the array */ - list_for_each_entry(ovl, &mgr->overlays, list) { - op = get_ovl_priv(ovl); - - if (!op->enabled && !op->enabling) - oi = NULL; - else if (applying && op->user_info_dirty) - oi = &op->user_info; - else - oi = &op->info; - - ois[ovl->id] = oi; - } - - return dss_mgr_check(mgr, mi, &mp->timings, &mp->lcd_config, ois); -} - -/* - * check manager and overlay settings using overlay_info from data->info - */ -static int dss_check_settings(struct omap_overlay_manager *mgr) -{ - return dss_check_settings_low(mgr, false); -} - -/* - * check manager and overlay settings using overlay_info from ovl->info if - * dirty and from data->info otherwise - */ -static int dss_check_settings_apply(struct omap_overlay_manager *mgr) -{ - return dss_check_settings_low(mgr, true); -} - -static bool need_isr(void) -{ - const int num_mgrs = dss_feat_get_num_mgrs(); - int i; - - for (i = 0; i < num_mgrs; ++i) { - struct omap_overlay_manager *mgr; - struct mgr_priv_data *mp; - struct omap_overlay *ovl; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - continue; - - if (mgr_manual_update(mgr)) { - /* to catch FRAMEDONE */ - if (mp->updating) - return true; - } else { - /* to catch GO bit going down */ - if (mp->busy) - return true; - - /* to write new values to registers */ - if (mp->info_dirty) - return true; - - /* to set GO bit */ - if (mp->shadow_info_dirty) - return true; - - /* - * NOTE: we don't check extra_info flags for disabled - * managers, once the manager is enabled, the extra_info - * related manager changes will be taken in by HW. - */ - - /* to write new values to registers */ - if (mp->extra_info_dirty) - return true; - - /* to set GO bit */ - if (mp->shadow_extra_info_dirty) - return true; - - list_for_each_entry(ovl, &mgr->overlays, list) { - struct ovl_priv_data *op; - - op = get_ovl_priv(ovl); - - /* - * NOTE: we check extra_info flags even for - * disabled overlays, as extra_infos need to be - * always written. - */ - - /* to write new values to registers */ - if (op->extra_info_dirty) - return true; - - /* to set GO bit */ - if (op->shadow_extra_info_dirty) - return true; - - if (!op->enabled) - continue; - - /* to write new values to registers */ - if (op->info_dirty) - return true; - - /* to set GO bit */ - if (op->shadow_info_dirty) - return true; - } - } - } - - return false; -} - -static bool need_go(struct omap_overlay_manager *mgr) -{ - struct omap_overlay *ovl; - struct mgr_priv_data *mp; - struct ovl_priv_data *op; - - mp = get_mgr_priv(mgr); - - if (mp->shadow_info_dirty || mp->shadow_extra_info_dirty) - return true; - - list_for_each_entry(ovl, &mgr->overlays, list) { - op = get_ovl_priv(ovl); - if (op->shadow_info_dirty || op->shadow_extra_info_dirty) - return true; - } - - return false; -} - -/* returns true if an extra_info field is currently being updated */ -static bool extra_info_update_ongoing(void) -{ - const int num_mgrs = dss_feat_get_num_mgrs(); - int i; - - for (i = 0; i < num_mgrs; ++i) { - struct omap_overlay_manager *mgr; - struct omap_overlay *ovl; - struct mgr_priv_data *mp; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - continue; - - if (!mp->updating) - continue; - - if (mp->extra_info_dirty || mp->shadow_extra_info_dirty) - return true; - - list_for_each_entry(ovl, &mgr->overlays, list) { - struct ovl_priv_data *op = get_ovl_priv(ovl); - - if (op->extra_info_dirty || op->shadow_extra_info_dirty) - return true; - } - } - - return false; -} - -/* wait until no extra_info updates are pending */ -static void wait_pending_extra_info_updates(void) -{ - bool updating; - unsigned long flags; - unsigned long t; - int r; - - spin_lock_irqsave(&data_lock, flags); - - updating = extra_info_update_ongoing(); - - if (!updating) { - spin_unlock_irqrestore(&data_lock, flags); - return; - } - - init_completion(&extra_updated_completion); - - spin_unlock_irqrestore(&data_lock, flags); - - t = msecs_to_jiffies(500); - r = wait_for_completion_timeout(&extra_updated_completion, t); - if (r == 0) - DSSWARN("timeout in wait_pending_extra_info_updates\n"); -} - -static struct omap_dss_device *dss_mgr_get_device(struct omap_overlay_manager *mgr) -{ - struct omap_dss_device *dssdev; - - dssdev = mgr->output; - if (dssdev == NULL) - return NULL; - - while (dssdev->dst) - dssdev = dssdev->dst; - - if (dssdev->driver) - return dssdev; - else - return NULL; -} - -static struct omap_dss_device *dss_ovl_get_device(struct omap_overlay *ovl) -{ - return ovl->manager ? dss_mgr_get_device(ovl->manager) : NULL; -} - -static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr) -{ - unsigned long timeout = msecs_to_jiffies(500); - u32 irq; - int r; - - if (mgr->output == NULL) - return -ENODEV; - - r = dispc_runtime_get(); - if (r) - return r; - - switch (mgr->output->id) { - case OMAP_DSS_OUTPUT_VENC: - irq = DISPC_IRQ_EVSYNC_ODD; - break; - case OMAP_DSS_OUTPUT_HDMI: - irq = DISPC_IRQ_EVSYNC_EVEN; - break; - default: - irq = dispc_mgr_get_vsync_irq(mgr->id); - break; - } - - r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout); - - dispc_runtime_put(); - - return r; -} - -static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr) -{ - unsigned long timeout = msecs_to_jiffies(500); - struct mgr_priv_data *mp = get_mgr_priv(mgr); - u32 irq; - unsigned long flags; - int r; - int i; - - spin_lock_irqsave(&data_lock, flags); - - if (mgr_manual_update(mgr)) { - spin_unlock_irqrestore(&data_lock, flags); - return 0; - } - - if (!mp->enabled) { - spin_unlock_irqrestore(&data_lock, flags); - return 0; - } - - spin_unlock_irqrestore(&data_lock, flags); - - r = dispc_runtime_get(); - if (r) - return r; - - irq = dispc_mgr_get_vsync_irq(mgr->id); - - i = 0; - while (1) { - bool shadow_dirty, dirty; - - spin_lock_irqsave(&data_lock, flags); - dirty = mp->info_dirty; - shadow_dirty = mp->shadow_info_dirty; - spin_unlock_irqrestore(&data_lock, flags); - - if (!dirty && !shadow_dirty) { - r = 0; - break; - } - - /* 4 iterations is the worst case: - * 1 - initial iteration, dirty = true (between VFP and VSYNC) - * 2 - first VSYNC, dirty = true - * 3 - dirty = false, shadow_dirty = true - * 4 - shadow_dirty = false */ - if (i++ == 3) { - DSSERR("mgr(%d)->wait_for_go() not finishing\n", - mgr->id); - r = 0; - break; - } - - r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout); - if (r == -ERESTARTSYS) - break; - - if (r) { - DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id); - break; - } - } - - dispc_runtime_put(); - - return r; -} - -static int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl) -{ - unsigned long timeout = msecs_to_jiffies(500); - struct ovl_priv_data *op; - struct mgr_priv_data *mp; - u32 irq; - unsigned long flags; - int r; - int i; - - if (!ovl->manager) - return 0; - - mp = get_mgr_priv(ovl->manager); - - spin_lock_irqsave(&data_lock, flags); - - if (ovl_manual_update(ovl)) { - spin_unlock_irqrestore(&data_lock, flags); - return 0; - } - - if (!mp->enabled) { - spin_unlock_irqrestore(&data_lock, flags); - return 0; - } - - spin_unlock_irqrestore(&data_lock, flags); - - r = dispc_runtime_get(); - if (r) - return r; - - irq = dispc_mgr_get_vsync_irq(ovl->manager->id); - - op = get_ovl_priv(ovl); - i = 0; - while (1) { - bool shadow_dirty, dirty; - - spin_lock_irqsave(&data_lock, flags); - dirty = op->info_dirty; - shadow_dirty = op->shadow_info_dirty; - spin_unlock_irqrestore(&data_lock, flags); - - if (!dirty && !shadow_dirty) { - r = 0; - break; - } - - /* 4 iterations is the worst case: - * 1 - initial iteration, dirty = true (between VFP and VSYNC) - * 2 - first VSYNC, dirty = true - * 3 - dirty = false, shadow_dirty = true - * 4 - shadow_dirty = false */ - if (i++ == 3) { - DSSERR("ovl(%d)->wait_for_go() not finishing\n", - ovl->id); - r = 0; - break; - } - - r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout); - if (r == -ERESTARTSYS) - break; - - if (r) { - DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id); - break; - } - } - - dispc_runtime_put(); - - return r; -} - -static void dss_ovl_write_regs(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - struct omap_overlay_info *oi; - bool replication; - struct mgr_priv_data *mp; - int r; - - DSSDBG("writing ovl %d regs\n", ovl->id); - - if (!op->enabled || !op->info_dirty) - return; - - oi = &op->info; - - mp = get_mgr_priv(ovl->manager); - - replication = dss_ovl_use_replication(mp->lcd_config, oi->color_mode); - - r = dispc_ovl_setup(ovl->id, oi, replication, &mp->timings, false); - if (r) { - /* - * We can't do much here, as this function can be called from - * vsync interrupt. - */ - DSSERR("dispc_ovl_setup failed for ovl %d\n", ovl->id); - - /* This will leave fifo configurations in a nonoptimal state */ - op->enabled = false; - dispc_ovl_enable(ovl->id, false); - return; - } - - op->info_dirty = false; - if (mp->updating) - op->shadow_info_dirty = true; -} - -static void dss_ovl_write_regs_extra(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - struct mgr_priv_data *mp; - - DSSDBG("writing ovl %d regs extra\n", ovl->id); - - if (!op->extra_info_dirty) - return; - - /* note: write also when op->enabled == false, so that the ovl gets - * disabled */ - - dispc_ovl_enable(ovl->id, op->enabled); - dispc_ovl_set_fifo_threshold(ovl->id, op->fifo_low, op->fifo_high); - - mp = get_mgr_priv(ovl->manager); - - op->extra_info_dirty = false; - if (mp->updating) - op->shadow_extra_info_dirty = true; -} - -static void dss_mgr_write_regs(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - struct omap_overlay *ovl; - - DSSDBG("writing mgr %d regs\n", mgr->id); - - if (!mp->enabled) - return; - - WARN_ON(mp->busy); - - /* Commit overlay settings */ - list_for_each_entry(ovl, &mgr->overlays, list) { - dss_ovl_write_regs(ovl); - dss_ovl_write_regs_extra(ovl); - } - - if (mp->info_dirty) { - dispc_mgr_setup(mgr->id, &mp->info); - - mp->info_dirty = false; - if (mp->updating) - mp->shadow_info_dirty = true; - } -} - -static void dss_mgr_write_regs_extra(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - DSSDBG("writing mgr %d regs extra\n", mgr->id); - - if (!mp->extra_info_dirty) - return; - - dispc_mgr_set_timings(mgr->id, &mp->timings); - - /* lcd_config parameters */ - if (dss_mgr_is_lcd(mgr->id)) - dispc_mgr_set_lcd_config(mgr->id, &mp->lcd_config); - - mp->extra_info_dirty = false; - if (mp->updating) - mp->shadow_extra_info_dirty = true; -} - -static void dss_write_regs(void) -{ - const int num_mgrs = omap_dss_get_num_overlay_managers(); - int i; - - for (i = 0; i < num_mgrs; ++i) { - struct omap_overlay_manager *mgr; - struct mgr_priv_data *mp; - int r; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled || mgr_manual_update(mgr) || mp->busy) - continue; - - r = dss_check_settings(mgr); - if (r) { - DSSERR("cannot write registers for manager %s: " - "illegal configuration\n", mgr->name); - continue; - } - - dss_mgr_write_regs(mgr); - dss_mgr_write_regs_extra(mgr); - } -} - -static void dss_set_go_bits(void) -{ - const int num_mgrs = omap_dss_get_num_overlay_managers(); - int i; - - for (i = 0; i < num_mgrs; ++i) { - struct omap_overlay_manager *mgr; - struct mgr_priv_data *mp; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled || mgr_manual_update(mgr) || mp->busy) - continue; - - if (!need_go(mgr)) - continue; - - mp->busy = true; - - if (!dss_data.irq_enabled && need_isr()) - dss_register_vsync_isr(); - - dispc_mgr_go(mgr->id); - } - -} - -static void mgr_clear_shadow_dirty(struct omap_overlay_manager *mgr) -{ - struct omap_overlay *ovl; - struct mgr_priv_data *mp; - struct ovl_priv_data *op; - - mp = get_mgr_priv(mgr); - mp->shadow_info_dirty = false; - mp->shadow_extra_info_dirty = false; - - list_for_each_entry(ovl, &mgr->overlays, list) { - op = get_ovl_priv(ovl); - op->shadow_info_dirty = false; - op->shadow_extra_info_dirty = false; - } -} - -static int dss_mgr_connect_compat(struct omap_overlay_manager *mgr, - struct omap_dss_device *dst) -{ - return mgr->set_output(mgr, dst); -} - -static void dss_mgr_disconnect_compat(struct omap_overlay_manager *mgr, - struct omap_dss_device *dst) -{ - mgr->unset_output(mgr); -} - -static void dss_mgr_start_update_compat(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - int r; - - spin_lock_irqsave(&data_lock, flags); - - WARN_ON(mp->updating); - - r = dss_check_settings(mgr); - if (r) { - DSSERR("cannot start manual update: illegal configuration\n"); - spin_unlock_irqrestore(&data_lock, flags); - return; - } - - dss_mgr_write_regs(mgr); - dss_mgr_write_regs_extra(mgr); - - mp->updating = true; - - if (!dss_data.irq_enabled && need_isr()) - dss_register_vsync_isr(); - - dispc_mgr_enable_sync(mgr->id); - - spin_unlock_irqrestore(&data_lock, flags); -} - -static void dss_apply_irq_handler(void *data, u32 mask); - -static void dss_register_vsync_isr(void) -{ - const int num_mgrs = dss_feat_get_num_mgrs(); - u32 mask; - int r, i; - - mask = 0; - for (i = 0; i < num_mgrs; ++i) - mask |= dispc_mgr_get_vsync_irq(i); - - for (i = 0; i < num_mgrs; ++i) - mask |= dispc_mgr_get_framedone_irq(i); - - r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask); - WARN_ON(r); - - dss_data.irq_enabled = true; -} - -static void dss_unregister_vsync_isr(void) -{ - const int num_mgrs = dss_feat_get_num_mgrs(); - u32 mask; - int r, i; - - mask = 0; - for (i = 0; i < num_mgrs; ++i) - mask |= dispc_mgr_get_vsync_irq(i); - - for (i = 0; i < num_mgrs; ++i) - mask |= dispc_mgr_get_framedone_irq(i); - - r = omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, mask); - WARN_ON(r); - - dss_data.irq_enabled = false; -} - -static void dss_apply_irq_handler(void *data, u32 mask) -{ - const int num_mgrs = dss_feat_get_num_mgrs(); - int i; - bool extra_updating; - - spin_lock(&data_lock); - - /* clear busy, updating flags, shadow_dirty flags */ - for (i = 0; i < num_mgrs; i++) { - struct omap_overlay_manager *mgr; - struct mgr_priv_data *mp; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - continue; - - mp->updating = dispc_mgr_is_enabled(i); - - if (!mgr_manual_update(mgr)) { - bool was_busy = mp->busy; - mp->busy = dispc_mgr_go_busy(i); - - if (was_busy && !mp->busy) - mgr_clear_shadow_dirty(mgr); - } - } - - dss_write_regs(); - dss_set_go_bits(); - - extra_updating = extra_info_update_ongoing(); - if (!extra_updating) - complete_all(&extra_updated_completion); - - /* call framedone handlers for manual update displays */ - for (i = 0; i < num_mgrs; i++) { - struct omap_overlay_manager *mgr; - struct mgr_priv_data *mp; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mgr_manual_update(mgr) || !mp->framedone_handler) - continue; - - if (mask & dispc_mgr_get_framedone_irq(i)) - mp->framedone_handler(mp->framedone_handler_data); - } - - if (!need_isr()) - dss_unregister_vsync_isr(); - - spin_unlock(&data_lock); -} - -static void omap_dss_mgr_apply_ovl(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op; - - op = get_ovl_priv(ovl); - - if (!op->user_info_dirty) - return; - - op->user_info_dirty = false; - op->info_dirty = true; - op->info = op->user_info; -} - -static void omap_dss_mgr_apply_mgr(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp; - - mp = get_mgr_priv(mgr); - - if (!mp->user_info_dirty) - return; - - mp->user_info_dirty = false; - mp->info_dirty = true; - mp->info = mp->user_info; -} - -static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr) -{ - unsigned long flags; - struct omap_overlay *ovl; - int r; - - DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name); - - spin_lock_irqsave(&data_lock, flags); - - r = dss_check_settings_apply(mgr); - if (r) { - spin_unlock_irqrestore(&data_lock, flags); - DSSERR("failed to apply settings: illegal configuration.\n"); - return r; - } - - /* Configure overlays */ - list_for_each_entry(ovl, &mgr->overlays, list) - omap_dss_mgr_apply_ovl(ovl); - - /* Configure manager */ - omap_dss_mgr_apply_mgr(mgr); - - dss_write_regs(); - dss_set_go_bits(); - - spin_unlock_irqrestore(&data_lock, flags); - - return 0; -} - -static void dss_apply_ovl_enable(struct omap_overlay *ovl, bool enable) -{ - struct ovl_priv_data *op; - - op = get_ovl_priv(ovl); - - if (op->enabled == enable) - return; - - op->enabled = enable; - op->extra_info_dirty = true; -} - -static void dss_apply_ovl_fifo_thresholds(struct omap_overlay *ovl, - u32 fifo_low, u32 fifo_high) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - - if (op->fifo_low == fifo_low && op->fifo_high == fifo_high) - return; - - op->fifo_low = fifo_low; - op->fifo_high = fifo_high; - op->extra_info_dirty = true; -} - -static void dss_ovl_setup_fifo(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - u32 fifo_low, fifo_high; - bool use_fifo_merge = false; - - if (!op->enabled && !op->enabling) - return; - - dispc_ovl_compute_fifo_thresholds(ovl->id, &fifo_low, &fifo_high, - use_fifo_merge, ovl_manual_update(ovl)); - - dss_apply_ovl_fifo_thresholds(ovl, fifo_low, fifo_high); -} - -static void dss_mgr_setup_fifos(struct omap_overlay_manager *mgr) -{ - struct omap_overlay *ovl; - struct mgr_priv_data *mp; - - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - return; - - list_for_each_entry(ovl, &mgr->overlays, list) - dss_ovl_setup_fifo(ovl); -} - -static void dss_setup_fifos(void) -{ - const int num_mgrs = omap_dss_get_num_overlay_managers(); - struct omap_overlay_manager *mgr; - int i; - - for (i = 0; i < num_mgrs; ++i) { - mgr = omap_dss_get_overlay_manager(i); - dss_mgr_setup_fifos(mgr); - } -} - -static int dss_mgr_enable_compat(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - int r; - - mutex_lock(&apply_lock); - - if (mp->enabled) - goto out; - - spin_lock_irqsave(&data_lock, flags); - - mp->enabled = true; - - r = dss_check_settings(mgr); - if (r) { - DSSERR("failed to enable manager %d: check_settings failed\n", - mgr->id); - goto err; - } - - dss_setup_fifos(); - - dss_write_regs(); - dss_set_go_bits(); - - if (!mgr_manual_update(mgr)) - mp->updating = true; - - if (!dss_data.irq_enabled && need_isr()) - dss_register_vsync_isr(); - - spin_unlock_irqrestore(&data_lock, flags); - - if (!mgr_manual_update(mgr)) - dispc_mgr_enable_sync(mgr->id); - -out: - mutex_unlock(&apply_lock); - - return 0; - -err: - mp->enabled = false; - spin_unlock_irqrestore(&data_lock, flags); - mutex_unlock(&apply_lock); - return r; -} - -static void dss_mgr_disable_compat(struct omap_overlay_manager *mgr) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - - mutex_lock(&apply_lock); - - if (!mp->enabled) - goto out; - - wait_pending_extra_info_updates(); - - if (!mgr_manual_update(mgr)) - dispc_mgr_disable_sync(mgr->id); - - spin_lock_irqsave(&data_lock, flags); - - mp->updating = false; - mp->enabled = false; - - spin_unlock_irqrestore(&data_lock, flags); - -out: - mutex_unlock(&apply_lock); -} - -static int dss_mgr_set_info(struct omap_overlay_manager *mgr, - struct omap_overlay_manager_info *info) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - int r; - - r = dss_mgr_simple_check(mgr, info); - if (r) - return r; - - spin_lock_irqsave(&data_lock, flags); - - mp->user_info = *info; - mp->user_info_dirty = true; - - spin_unlock_irqrestore(&data_lock, flags); - - return 0; -} - -static void dss_mgr_get_info(struct omap_overlay_manager *mgr, - struct omap_overlay_manager_info *info) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - - spin_lock_irqsave(&data_lock, flags); - - *info = mp->user_info; - - spin_unlock_irqrestore(&data_lock, flags); -} - -static int dss_mgr_set_output(struct omap_overlay_manager *mgr, - struct omap_dss_device *output) -{ - int r; - - mutex_lock(&apply_lock); - - if (mgr->output) { - DSSERR("manager %s is already connected to an output\n", - mgr->name); - r = -EINVAL; - goto err; - } - - if ((mgr->supported_outputs & output->id) == 0) { - DSSERR("output does not support manager %s\n", - mgr->name); - r = -EINVAL; - goto err; - } - - output->manager = mgr; - mgr->output = output; - - mutex_unlock(&apply_lock); - - return 0; -err: - mutex_unlock(&apply_lock); - return r; -} - -static int dss_mgr_unset_output(struct omap_overlay_manager *mgr) -{ - int r; - struct mgr_priv_data *mp = get_mgr_priv(mgr); - unsigned long flags; - - mutex_lock(&apply_lock); - - if (!mgr->output) { - DSSERR("failed to unset output, output not set\n"); - r = -EINVAL; - goto err; - } - - spin_lock_irqsave(&data_lock, flags); - - if (mp->enabled) { - DSSERR("output can't be unset when manager is enabled\n"); - r = -EINVAL; - goto err1; - } - - spin_unlock_irqrestore(&data_lock, flags); - - mgr->output->manager = NULL; - mgr->output = NULL; - - mutex_unlock(&apply_lock); - - return 0; -err1: - spin_unlock_irqrestore(&data_lock, flags); -err: - mutex_unlock(&apply_lock); - - return r; -} - -static void dss_apply_mgr_timings(struct omap_overlay_manager *mgr, - const struct omap_video_timings *timings) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - mp->timings = *timings; - mp->extra_info_dirty = true; -} - -static void dss_mgr_set_timings_compat(struct omap_overlay_manager *mgr, - const struct omap_video_timings *timings) -{ - unsigned long flags; - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - spin_lock_irqsave(&data_lock, flags); - - if (mp->updating) { - DSSERR("cannot set timings for %s: manager needs to be disabled\n", - mgr->name); - goto out; - } - - dss_apply_mgr_timings(mgr, timings); -out: - spin_unlock_irqrestore(&data_lock, flags); -} - -static void dss_apply_mgr_lcd_config(struct omap_overlay_manager *mgr, - const struct dss_lcd_mgr_config *config) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - mp->lcd_config = *config; - mp->extra_info_dirty = true; -} - -static void dss_mgr_set_lcd_config_compat(struct omap_overlay_manager *mgr, - const struct dss_lcd_mgr_config *config) -{ - unsigned long flags; - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - spin_lock_irqsave(&data_lock, flags); - - if (mp->enabled) { - DSSERR("cannot apply lcd config for %s: manager needs to be disabled\n", - mgr->name); - goto out; - } - - dss_apply_mgr_lcd_config(mgr, config); -out: - spin_unlock_irqrestore(&data_lock, flags); -} - -static int dss_ovl_set_info(struct omap_overlay *ovl, - struct omap_overlay_info *info) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - int r; - - r = dss_ovl_simple_check(ovl, info); - if (r) - return r; - - spin_lock_irqsave(&data_lock, flags); - - op->user_info = *info; - op->user_info_dirty = true; - - spin_unlock_irqrestore(&data_lock, flags); - - return 0; -} - -static void dss_ovl_get_info(struct omap_overlay *ovl, - struct omap_overlay_info *info) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - - spin_lock_irqsave(&data_lock, flags); - - *info = op->user_info; - - spin_unlock_irqrestore(&data_lock, flags); -} - -static int dss_ovl_set_manager(struct omap_overlay *ovl, - struct omap_overlay_manager *mgr) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - int r; - - if (!mgr) - return -EINVAL; - - mutex_lock(&apply_lock); - - if (ovl->manager) { - DSSERR("overlay '%s' already has a manager '%s'\n", - ovl->name, ovl->manager->name); - r = -EINVAL; - goto err; - } - - r = dispc_runtime_get(); - if (r) - goto err; - - spin_lock_irqsave(&data_lock, flags); - - if (op->enabled) { - spin_unlock_irqrestore(&data_lock, flags); - DSSERR("overlay has to be disabled to change the manager\n"); - r = -EINVAL; - goto err1; - } - - dispc_ovl_set_channel_out(ovl->id, mgr->id); - - ovl->manager = mgr; - list_add_tail(&ovl->list, &mgr->overlays); - - spin_unlock_irqrestore(&data_lock, flags); - - dispc_runtime_put(); - - mutex_unlock(&apply_lock); - - return 0; - -err1: - dispc_runtime_put(); -err: - mutex_unlock(&apply_lock); - return r; -} - -static int dss_ovl_unset_manager(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - int r; - - mutex_lock(&apply_lock); - - if (!ovl->manager) { - DSSERR("failed to detach overlay: manager not set\n"); - r = -EINVAL; - goto err; - } - - spin_lock_irqsave(&data_lock, flags); - - if (op->enabled) { - spin_unlock_irqrestore(&data_lock, flags); - DSSERR("overlay has to be disabled to unset the manager\n"); - r = -EINVAL; - goto err; - } - - spin_unlock_irqrestore(&data_lock, flags); - - /* wait for pending extra_info updates to ensure the ovl is disabled */ - wait_pending_extra_info_updates(); - - /* - * For a manual update display, there is no guarantee that the overlay - * is really disabled in HW, we may need an extra update from this - * manager before the configurations can go in. Return an error if the - * overlay needed an update from the manager. - * - * TODO: Instead of returning an error, try to do a dummy manager update - * here to disable the overlay in hardware. Use the *GATED fields in - * the DISPC_CONFIG registers to do a dummy update. - */ - spin_lock_irqsave(&data_lock, flags); - - if (ovl_manual_update(ovl) && op->extra_info_dirty) { - spin_unlock_irqrestore(&data_lock, flags); - DSSERR("need an update to change the manager\n"); - r = -EINVAL; - goto err; - } - - ovl->manager = NULL; - list_del(&ovl->list); - - spin_unlock_irqrestore(&data_lock, flags); - - mutex_unlock(&apply_lock); - - return 0; -err: - mutex_unlock(&apply_lock); - return r; -} - -static bool dss_ovl_is_enabled(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - bool e; - - spin_lock_irqsave(&data_lock, flags); - - e = op->enabled; - - spin_unlock_irqrestore(&data_lock, flags); - - return e; -} - -static int dss_ovl_enable(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - int r; - - mutex_lock(&apply_lock); - - if (op->enabled) { - r = 0; - goto err1; - } - - if (ovl->manager == NULL || ovl->manager->output == NULL) { - r = -EINVAL; - goto err1; - } - - spin_lock_irqsave(&data_lock, flags); - - op->enabling = true; - - r = dss_check_settings(ovl->manager); - if (r) { - DSSERR("failed to enable overlay %d: check_settings failed\n", - ovl->id); - goto err2; - } - - dss_setup_fifos(); - - op->enabling = false; - dss_apply_ovl_enable(ovl, true); - - dss_write_regs(); - dss_set_go_bits(); - - spin_unlock_irqrestore(&data_lock, flags); - - mutex_unlock(&apply_lock); - - return 0; -err2: - op->enabling = false; - spin_unlock_irqrestore(&data_lock, flags); -err1: - mutex_unlock(&apply_lock); - return r; -} - -static int dss_ovl_disable(struct omap_overlay *ovl) -{ - struct ovl_priv_data *op = get_ovl_priv(ovl); - unsigned long flags; - int r; - - mutex_lock(&apply_lock); - - if (!op->enabled) { - r = 0; - goto err; - } - - if (ovl->manager == NULL || ovl->manager->output == NULL) { - r = -EINVAL; - goto err; - } - - spin_lock_irqsave(&data_lock, flags); - - dss_apply_ovl_enable(ovl, false); - dss_write_regs(); - dss_set_go_bits(); - - spin_unlock_irqrestore(&data_lock, flags); - - mutex_unlock(&apply_lock); - - return 0; - -err: - mutex_unlock(&apply_lock); - return r; -} - -static int dss_mgr_register_framedone_handler_compat(struct omap_overlay_manager *mgr, - void (*handler)(void *), void *data) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - if (mp->framedone_handler) - return -EBUSY; - - mp->framedone_handler = handler; - mp->framedone_handler_data = data; - - return 0; -} - -static void dss_mgr_unregister_framedone_handler_compat(struct omap_overlay_manager *mgr, - void (*handler)(void *), void *data) -{ - struct mgr_priv_data *mp = get_mgr_priv(mgr); - - WARN_ON(mp->framedone_handler != handler || - mp->framedone_handler_data != data); - - mp->framedone_handler = NULL; - mp->framedone_handler_data = NULL; -} - -static const struct dss_mgr_ops apply_mgr_ops = { - .connect = dss_mgr_connect_compat, - .disconnect = dss_mgr_disconnect_compat, - .start_update = dss_mgr_start_update_compat, - .enable = dss_mgr_enable_compat, - .disable = dss_mgr_disable_compat, - .set_timings = dss_mgr_set_timings_compat, - .set_lcd_config = dss_mgr_set_lcd_config_compat, - .register_framedone_handler = dss_mgr_register_framedone_handler_compat, - .unregister_framedone_handler = dss_mgr_unregister_framedone_handler_compat, -}; - -static int compat_refcnt; -static DEFINE_MUTEX(compat_init_lock); - -int omapdss_compat_init(void) -{ - struct platform_device *pdev = dss_get_core_pdev(); - int i, r; - - mutex_lock(&compat_init_lock); - - if (compat_refcnt++ > 0) - goto out; - - apply_init_priv(); - - dss_init_overlay_managers_sysfs(pdev); - dss_init_overlays(pdev); - - for (i = 0; i < omap_dss_get_num_overlay_managers(); i++) { - struct omap_overlay_manager *mgr; - - mgr = omap_dss_get_overlay_manager(i); - - mgr->set_output = &dss_mgr_set_output; - mgr->unset_output = &dss_mgr_unset_output; - mgr->apply = &omap_dss_mgr_apply; - mgr->set_manager_info = &dss_mgr_set_info; - mgr->get_manager_info = &dss_mgr_get_info; - mgr->wait_for_go = &dss_mgr_wait_for_go; - mgr->wait_for_vsync = &dss_mgr_wait_for_vsync; - mgr->get_device = &dss_mgr_get_device; - } - - for (i = 0; i < omap_dss_get_num_overlays(); i++) { - struct omap_overlay *ovl = omap_dss_get_overlay(i); - - ovl->is_enabled = &dss_ovl_is_enabled; - ovl->enable = &dss_ovl_enable; - ovl->disable = &dss_ovl_disable; - ovl->set_manager = &dss_ovl_set_manager; - ovl->unset_manager = &dss_ovl_unset_manager; - ovl->set_overlay_info = &dss_ovl_set_info; - ovl->get_overlay_info = &dss_ovl_get_info; - ovl->wait_for_go = &dss_mgr_wait_for_go_ovl; - ovl->get_device = &dss_ovl_get_device; - } - - r = dss_install_mgr_ops(&apply_mgr_ops); - if (r) - goto err_mgr_ops; - - r = display_init_sysfs(pdev); - if (r) - goto err_disp_sysfs; - - dispc_runtime_get(); - - r = dss_dispc_initialize_irq(); - if (r) - goto err_init_irq; - - dispc_runtime_put(); - -out: - mutex_unlock(&compat_init_lock); - - return 0; - -err_init_irq: - dispc_runtime_put(); - display_uninit_sysfs(pdev); - -err_disp_sysfs: - dss_uninstall_mgr_ops(); - -err_mgr_ops: - dss_uninit_overlay_managers_sysfs(pdev); - dss_uninit_overlays(pdev); - - compat_refcnt--; - - mutex_unlock(&compat_init_lock); - - return r; -} -EXPORT_SYMBOL(omapdss_compat_init); - -void omapdss_compat_uninit(void) -{ - struct platform_device *pdev = dss_get_core_pdev(); - - mutex_lock(&compat_init_lock); - - if (--compat_refcnt > 0) - goto out; - - dss_dispc_uninitialize_irq(); - - display_uninit_sysfs(pdev); - - dss_uninstall_mgr_ops(); - - dss_uninit_overlay_managers_sysfs(pdev); - dss_uninit_overlays(pdev); -out: - mutex_unlock(&compat_init_lock); -} -EXPORT_SYMBOL(omapdss_compat_uninit); |