diff options
Diffstat (limited to 'drivers/video/omap2/dss/apply.c')
| -rw-r--r-- | drivers/video/omap2/dss/apply.c | 1330 |
1 files changed, 0 insertions, 1330 deletions
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c deleted file mode 100644 index 87b3e25294c..00000000000 --- a/drivers/video/omap2/dss/apply.c +++ /dev/null @@ -1,1330 +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/slab.h> -#include <linux/spinlock.h> -#include <linux/jiffies.h> - -#include <video/omapdss.h> - -#include "dss.h" -#include "dss_features.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; - enum omap_channel channel; - 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; -}; - -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]; -} - -void dss_apply_init(void) -{ - const int num_ovls = dss_feat_get_num_ovls(); - 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.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; - } -} - -static bool ovl_manual_update(struct omap_overlay *ovl) -{ - return ovl->manager->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE; -} - -static bool mgr_manual_update(struct omap_overlay_manager *mgr) -{ - return mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE; -} - -static int dss_check_settings_low(struct omap_overlay_manager *mgr, - struct omap_dss_device *dssdev, 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 (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, dssdev, mi, ois); -} - -/* - * check manager and overlay settings using overlay_info from data->info - */ -static int dss_check_settings(struct omap_overlay_manager *mgr, - struct omap_dss_device *dssdev) -{ - return dss_check_settings_low(mgr, dssdev, 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, - struct omap_dss_device *dssdev) -{ - return dss_check_settings_low(mgr, dssdev, 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; - - 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) - 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_ovls = omap_dss_get_num_overlays(); - struct ovl_priv_data *op; - struct omap_overlay *ovl; - struct mgr_priv_data *mp; - int i; - - for (i = 0; i < num_ovls; ++i) { - ovl = omap_dss_get_overlay(i); - op = get_ovl_priv(ovl); - - if (!ovl->manager) - continue; - - mp = get_mgr_priv(ovl->manager); - - if (!mp->enabled) - continue; - - if (!mp->updating) - continue; - - 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; - - 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); - wait_for_completion_timeout(&extra_updated_completion, t); - - updating = extra_info_update_ongoing(); - - WARN_ON(updating); -} - -int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr) -{ - unsigned long timeout = msecs_to_jiffies(500); - struct mgr_priv_data *mp; - u32 irq; - int r; - int i; - struct omap_dss_device *dssdev = mgr->device; - - if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) - return 0; - - if (mgr_manual_update(mgr)) - return 0; - - irq = dispc_mgr_get_vsync_irq(mgr->id); - - mp = get_mgr_priv(mgr); - i = 0; - while (1) { - unsigned long flags; - 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; - } - } - - return r; -} - -int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl) -{ - unsigned long timeout = msecs_to_jiffies(500); - struct ovl_priv_data *op; - struct omap_dss_device *dssdev; - u32 irq; - int r; - int i; - - if (!ovl->manager) - return 0; - - dssdev = ovl->manager->device; - - if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) - return 0; - - if (ovl_manual_update(ovl)) - return 0; - - irq = dispc_mgr_get_vsync_irq(ovl->manager->id); - - op = get_ovl_priv(ovl); - i = 0; - while (1) { - unsigned long flags; - 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; - } - } - - 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 ilace, replication; - struct mgr_priv_data *mp; - int r; - - DSSDBGF("%d", ovl->id); - - if (!op->enabled || !op->info_dirty) - return; - - oi = &op->info; - - replication = dss_use_replication(ovl->manager->device, oi->color_mode); - - ilace = ovl->manager->device->type == OMAP_DISPLAY_TYPE_VENC; - - r = dispc_ovl_setup(ovl->id, oi, ilace, replication); - 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; - } - - mp = get_mgr_priv(ovl->manager); - - 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; - - DSSDBGF("%d", 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_channel_out(ovl->id, op->channel); - 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; - - DSSDBGF("%d", 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_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, mgr->device); - if (r) { - DSSERR("cannot write registers for manager %s: " - "illegal configuration\n", mgr->name); - continue; - } - - dss_mgr_write_regs(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); - } - -} - -void dss_mgr_start_update(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, mgr->device); - if (r) { - DSSERR("cannot start manual update: illegal configuration\n"); - spin_unlock_irqrestore(&data_lock, flags); - return; - } - - dss_mgr_write_regs(mgr); - - mp->updating = true; - - if (!dss_data.irq_enabled && need_isr()) - dss_register_vsync_isr(); - - dispc_mgr_enable(mgr->id, true); - - 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 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; - - 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 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; - bool was_updating; - - mgr = omap_dss_get_overlay_manager(i); - mp = get_mgr_priv(mgr); - - if (!mp->enabled) - continue; - - was_updating = mp->updating; - 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); - } else { - if (was_updating && !mp->updating) - 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); - - 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; -} - -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, mgr->device); - 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); - struct omap_dss_device *dssdev; - u32 size, burst_size; - u32 fifo_low, fifo_high; - - if (!op->enabled && !op->enabling) - return; - - dssdev = ovl->manager->device; - - size = dispc_ovl_get_fifo_size(ovl->id); - - burst_size = dispc_ovl_get_burst_size(ovl->id); - - switch (dssdev->type) { - case OMAP_DISPLAY_TYPE_DPI: - case OMAP_DISPLAY_TYPE_DBI: - case OMAP_DISPLAY_TYPE_SDI: - case OMAP_DISPLAY_TYPE_VENC: - case OMAP_DISPLAY_TYPE_HDMI: - default_get_overlay_fifo_thresholds(ovl->id, size, - burst_size, &fifo_low, &fifo_high); - break; -#ifdef CONFIG_OMAP2_DSS_DSI - case OMAP_DISPLAY_TYPE_DSI: - dsi_get_overlay_fifo_thresholds(ovl->id, size, - burst_size, &fifo_low, &fifo_high); - break; -#endif - default: - BUG(); - } - - 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); - } -} - -int dss_mgr_enable(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, mgr->device); - 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; - - spin_unlock_irqrestore(&data_lock, flags); - - if (!mgr_manual_update(mgr)) - dispc_mgr_enable(mgr->id, true); - -out: - mutex_unlock(&apply_lock); - - return 0; - -err: - mp->enabled = false; - spin_unlock_irqrestore(&data_lock, flags); - mutex_unlock(&apply_lock); - return r; -} - -void dss_mgr_disable(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; - - if (!mgr_manual_update(mgr)) - dispc_mgr_enable(mgr->id, false); - - spin_lock_irqsave(&data_lock, flags); - - mp->updating = false; - mp->enabled = false; - - spin_unlock_irqrestore(&data_lock, flags); - -out: - mutex_unlock(&apply_lock); -} - -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; -} - -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); -} - -int dss_mgr_set_device(struct omap_overlay_manager *mgr, - struct omap_dss_device *dssdev) -{ - int r; - - mutex_lock(&apply_lock); - - if (dssdev->manager) { - DSSERR("display '%s' already has a manager '%s'\n", - dssdev->name, dssdev->manager->name); - r = -EINVAL; - goto err; - } - - if ((mgr->supported_displays & dssdev->type) == 0) { - DSSERR("display '%s' does not support manager '%s'\n", - dssdev->name, mgr->name); - r = -EINVAL; - goto err; - } - - dssdev->manager = mgr; - mgr->device = dssdev; - - mutex_unlock(&apply_lock); - - return 0; -err: - mutex_unlock(&apply_lock); - return r; -} - -int dss_mgr_unset_device(struct omap_overlay_manager *mgr) -{ - int r; - - mutex_lock(&apply_lock); - - if (!mgr->device) { - DSSERR("failed to unset display, display not set.\n"); - r = -EINVAL; - goto err; - } - - /* - * Don't allow currently enabled displays to have the overlay manager - * pulled out from underneath them - */ - if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED) { - r = -EINVAL; - goto err; - } - - mgr->device->manager = NULL; - mgr->device = NULL; - - mutex_unlock(&apply_lock); - - return 0; -err: - mutex_unlock(&apply_lock); - return r; -} - - -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; -} - -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); -} - -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; - } - - 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 err; - } - - op->channel = mgr->id; - op->extra_info_dirty = true; - - ovl->manager = mgr; - list_add_tail(&ovl->list, &mgr->overlays); - - spin_unlock_irqrestore(&data_lock, flags); - - /* XXX: When there is an overlay on a DSI manual update display, and - * the overlay is first disabled, then moved to tv, and enabled, we - * seem to get SYNC_LOST_DIGIT error. - * - * Waiting doesn't seem to help, but updating the manual update display - * after disabling the overlay seems to fix this. This hints that the - * overlay is perhaps somehow tied to the LCD output until the output - * is updated. - * - * Userspace workaround for this is to update the LCD after disabling - * the overlay, but before moving the overlay to TV. - */ - - mutex_unlock(&apply_lock); - - return 0; -err: - mutex_unlock(&apply_lock); - return r; -} - -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; - } - - op->channel = -1; - - 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; -} - -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; -} - -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->device == NULL) { - r = -EINVAL; - goto err1; - } - - spin_lock_irqsave(&data_lock, flags); - - op->enabling = true; - - r = dss_check_settings(ovl->manager, ovl->manager->device); - 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); - - /* wait for overlay to be enabled */ - wait_pending_extra_info_updates(); - - mutex_unlock(&apply_lock); - - return 0; -err2: - op->enabling = false; - spin_unlock_irqrestore(&data_lock, flags); -err1: - mutex_unlock(&apply_lock); - return r; -} - -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->device == 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); - - /* wait for the overlay to be disabled */ - wait_pending_extra_info_updates(); - - mutex_unlock(&apply_lock); - - return 0; - -err: - mutex_unlock(&apply_lock); - return r; -} - |