mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
3568f2a46f
There is a problem related to DSS FIFO thresholds and power management on OMAP3. It seems that when the full PM hits in, we get underflows. The core reason is unknown, but after experiments it looks like only particular FIFO thresholds work correctly. This bug is related to an earlier patch, which added special FIFO threshold configuration for OMAP3, because DSI command mode output didn't work with the normal threshold configuration. However, as the above work-around worked fine for other output types also, we currently always configure thresholds in this special way on OMAP3. In theory there should be negligible difference with this special way and the standard way. The first paragraph explains what happens in practice. This patch changes the driver to use the special threshold configuration only when the output is a manual update display on OMAP3. This does include RFBI displays also, and although it hasn't been tested (no boards using RFBI) I suspect the similar behaviour is present there also, as the DISPC side should work similarly for DSI command mode and RFBI. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Joe Woodward <jw@terrafix.co.uk>
1566 lines
31 KiB
C
1566 lines
31 KiB
C
/*
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* Copyright (C) 2011 Texas Instruments
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define DSS_SUBSYS_NAME "APPLY"
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/jiffies.h>
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#include <video/omapdss.h>
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#include "dss.h"
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#include "dss_features.h"
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/*
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* We have 4 levels of cache for the dispc settings. First two are in SW and
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* the latter two in HW.
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*
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* set_info()
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* v
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* +--------------------+
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* | user_info |
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* +--------------------+
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* v
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* apply()
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* v
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* +--------------------+
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* | info |
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* +--------------------+
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* v
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* write_regs()
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* v
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* +--------------------+
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* | shadow registers |
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* +--------------------+
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* v
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* VFP or lcd/digit_enable
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* v
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* +--------------------+
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* | registers |
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* +--------------------+
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*/
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struct ovl_priv_data {
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bool user_info_dirty;
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struct omap_overlay_info user_info;
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bool info_dirty;
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struct omap_overlay_info info;
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bool shadow_info_dirty;
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bool extra_info_dirty;
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bool shadow_extra_info_dirty;
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bool enabled;
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enum omap_channel channel;
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u32 fifo_low, fifo_high;
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/*
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* True if overlay is to be enabled. Used to check and calculate configs
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* for the overlay before it is enabled in the HW.
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*/
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bool enabling;
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};
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struct mgr_priv_data {
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bool user_info_dirty;
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struct omap_overlay_manager_info user_info;
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bool info_dirty;
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struct omap_overlay_manager_info info;
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bool shadow_info_dirty;
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/* If true, GO bit is up and shadow registers cannot be written.
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* Never true for manual update displays */
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bool busy;
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/* If true, dispc output is enabled */
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bool updating;
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/* If true, a display is enabled using this manager */
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bool enabled;
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bool extra_info_dirty;
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bool shadow_extra_info_dirty;
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struct omap_video_timings timings;
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};
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static struct {
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struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS];
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struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS];
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bool fifo_merge_dirty;
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bool fifo_merge;
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bool irq_enabled;
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} dss_data;
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/* protects dss_data */
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static spinlock_t data_lock;
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/* lock for blocking functions */
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static DEFINE_MUTEX(apply_lock);
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static DECLARE_COMPLETION(extra_updated_completion);
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static void dss_register_vsync_isr(void);
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static struct ovl_priv_data *get_ovl_priv(struct omap_overlay *ovl)
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{
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return &dss_data.ovl_priv_data_array[ovl->id];
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}
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static struct mgr_priv_data *get_mgr_priv(struct omap_overlay_manager *mgr)
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{
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return &dss_data.mgr_priv_data_array[mgr->id];
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}
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void dss_apply_init(void)
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{
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const int num_ovls = dss_feat_get_num_ovls();
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int i;
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spin_lock_init(&data_lock);
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for (i = 0; i < num_ovls; ++i) {
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struct ovl_priv_data *op;
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op = &dss_data.ovl_priv_data_array[i];
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op->info.global_alpha = 255;
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switch (i) {
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case 0:
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op->info.zorder = 0;
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break;
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case 1:
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op->info.zorder =
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dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 3 : 0;
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break;
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case 2:
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op->info.zorder =
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dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 2 : 0;
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break;
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case 3:
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op->info.zorder =
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dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 1 : 0;
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break;
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}
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op->user_info = op->info;
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}
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}
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static bool ovl_manual_update(struct omap_overlay *ovl)
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{
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return ovl->manager->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
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}
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static bool mgr_manual_update(struct omap_overlay_manager *mgr)
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{
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return mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
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}
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static int dss_check_settings_low(struct omap_overlay_manager *mgr,
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bool applying)
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{
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struct omap_overlay_info *oi;
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struct omap_overlay_manager_info *mi;
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struct omap_overlay *ovl;
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struct omap_overlay_info *ois[MAX_DSS_OVERLAYS];
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struct ovl_priv_data *op;
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struct mgr_priv_data *mp;
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mp = get_mgr_priv(mgr);
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if (!mp->enabled)
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return 0;
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if (applying && mp->user_info_dirty)
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mi = &mp->user_info;
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else
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mi = &mp->info;
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/* collect the infos to be tested into the array */
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list_for_each_entry(ovl, &mgr->overlays, list) {
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op = get_ovl_priv(ovl);
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if (!op->enabled && !op->enabling)
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oi = NULL;
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else if (applying && op->user_info_dirty)
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oi = &op->user_info;
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else
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oi = &op->info;
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ois[ovl->id] = oi;
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}
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return dss_mgr_check(mgr, mi, &mp->timings, ois);
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}
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/*
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* check manager and overlay settings using overlay_info from data->info
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*/
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static int dss_check_settings(struct omap_overlay_manager *mgr)
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{
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return dss_check_settings_low(mgr, false);
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}
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/*
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* check manager and overlay settings using overlay_info from ovl->info if
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* dirty and from data->info otherwise
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*/
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static int dss_check_settings_apply(struct omap_overlay_manager *mgr)
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{
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return dss_check_settings_low(mgr, true);
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}
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static bool need_isr(void)
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{
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const int num_mgrs = dss_feat_get_num_mgrs();
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int i;
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for (i = 0; i < num_mgrs; ++i) {
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struct omap_overlay_manager *mgr;
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struct mgr_priv_data *mp;
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struct omap_overlay *ovl;
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mgr = omap_dss_get_overlay_manager(i);
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mp = get_mgr_priv(mgr);
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if (!mp->enabled)
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continue;
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if (mgr_manual_update(mgr)) {
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/* to catch FRAMEDONE */
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if (mp->updating)
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return true;
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} else {
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/* to catch GO bit going down */
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if (mp->busy)
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return true;
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/* to write new values to registers */
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if (mp->info_dirty)
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return true;
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/* to set GO bit */
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if (mp->shadow_info_dirty)
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return true;
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/*
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* NOTE: we don't check extra_info flags for disabled
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* managers, once the manager is enabled, the extra_info
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* related manager changes will be taken in by HW.
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*/
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/* to write new values to registers */
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if (mp->extra_info_dirty)
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return true;
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/* to set GO bit */
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if (mp->shadow_extra_info_dirty)
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return true;
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list_for_each_entry(ovl, &mgr->overlays, list) {
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struct ovl_priv_data *op;
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op = get_ovl_priv(ovl);
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/*
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* NOTE: we check extra_info flags even for
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* disabled overlays, as extra_infos need to be
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* always written.
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*/
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/* to write new values to registers */
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if (op->extra_info_dirty)
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return true;
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/* to set GO bit */
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if (op->shadow_extra_info_dirty)
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return true;
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if (!op->enabled)
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continue;
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/* to write new values to registers */
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if (op->info_dirty)
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return true;
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/* to set GO bit */
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if (op->shadow_info_dirty)
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return true;
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}
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}
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}
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return false;
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}
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static bool need_go(struct omap_overlay_manager *mgr)
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{
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struct omap_overlay *ovl;
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struct mgr_priv_data *mp;
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struct ovl_priv_data *op;
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mp = get_mgr_priv(mgr);
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if (mp->shadow_info_dirty || mp->shadow_extra_info_dirty)
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return true;
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list_for_each_entry(ovl, &mgr->overlays, list) {
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op = get_ovl_priv(ovl);
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if (op->shadow_info_dirty || op->shadow_extra_info_dirty)
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return true;
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}
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return false;
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}
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/* returns true if an extra_info field is currently being updated */
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static bool extra_info_update_ongoing(void)
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{
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const int num_mgrs = dss_feat_get_num_mgrs();
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int i;
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for (i = 0; i < num_mgrs; ++i) {
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struct omap_overlay_manager *mgr;
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struct omap_overlay *ovl;
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struct mgr_priv_data *mp;
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mgr = omap_dss_get_overlay_manager(i);
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mp = get_mgr_priv(mgr);
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if (!mp->enabled)
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continue;
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if (!mp->updating)
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continue;
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if (mp->extra_info_dirty || mp->shadow_extra_info_dirty)
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return true;
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list_for_each_entry(ovl, &mgr->overlays, list) {
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struct ovl_priv_data *op = get_ovl_priv(ovl);
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if (op->extra_info_dirty || op->shadow_extra_info_dirty)
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return true;
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}
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}
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return false;
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}
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/* wait until no extra_info updates are pending */
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static void wait_pending_extra_info_updates(void)
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{
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bool updating;
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unsigned long flags;
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unsigned long t;
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int r;
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spin_lock_irqsave(&data_lock, flags);
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updating = extra_info_update_ongoing();
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if (!updating) {
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spin_unlock_irqrestore(&data_lock, flags);
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return;
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}
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init_completion(&extra_updated_completion);
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spin_unlock_irqrestore(&data_lock, flags);
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t = msecs_to_jiffies(500);
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r = wait_for_completion_timeout(&extra_updated_completion, t);
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if (r == 0)
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DSSWARN("timeout in wait_pending_extra_info_updates\n");
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else if (r < 0)
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DSSERR("wait_pending_extra_info_updates failed: %d\n", r);
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}
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int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
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{
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unsigned long timeout = msecs_to_jiffies(500);
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struct mgr_priv_data *mp;
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u32 irq;
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int r;
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int i;
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struct omap_dss_device *dssdev = mgr->device;
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if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
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return 0;
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if (mgr_manual_update(mgr))
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return 0;
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r = dispc_runtime_get();
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if (r)
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return r;
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irq = dispc_mgr_get_vsync_irq(mgr->id);
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mp = get_mgr_priv(mgr);
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i = 0;
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while (1) {
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unsigned long flags;
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bool shadow_dirty, dirty;
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spin_lock_irqsave(&data_lock, flags);
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dirty = mp->info_dirty;
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shadow_dirty = mp->shadow_info_dirty;
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spin_unlock_irqrestore(&data_lock, flags);
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if (!dirty && !shadow_dirty) {
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r = 0;
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break;
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}
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/* 4 iterations is the worst case:
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* 1 - initial iteration, dirty = true (between VFP and VSYNC)
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* 2 - first VSYNC, dirty = true
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* 3 - dirty = false, shadow_dirty = true
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* 4 - shadow_dirty = false */
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if (i++ == 3) {
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DSSERR("mgr(%d)->wait_for_go() not finishing\n",
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mgr->id);
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r = 0;
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break;
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}
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r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
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if (r == -ERESTARTSYS)
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break;
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if (r) {
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DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
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break;
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}
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}
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dispc_runtime_put();
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return r;
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}
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int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
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{
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unsigned long timeout = msecs_to_jiffies(500);
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struct ovl_priv_data *op;
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struct omap_dss_device *dssdev;
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u32 irq;
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int r;
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int i;
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if (!ovl->manager)
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return 0;
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dssdev = ovl->manager->device;
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if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
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return 0;
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if (ovl_manual_update(ovl))
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return 0;
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r = dispc_runtime_get();
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if (r)
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return r;
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irq = dispc_mgr_get_vsync_irq(ovl->manager->id);
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op = get_ovl_priv(ovl);
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i = 0;
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while (1) {
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unsigned long flags;
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bool shadow_dirty, dirty;
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spin_lock_irqsave(&data_lock, flags);
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dirty = op->info_dirty;
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shadow_dirty = op->shadow_info_dirty;
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spin_unlock_irqrestore(&data_lock, flags);
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if (!dirty && !shadow_dirty) {
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r = 0;
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break;
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}
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/* 4 iterations is the worst case:
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* 1 - initial iteration, dirty = true (between VFP and VSYNC)
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* 2 - first VSYNC, dirty = true
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* 3 - dirty = false, shadow_dirty = true
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* 4 - shadow_dirty = false */
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if (i++ == 3) {
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DSSERR("ovl(%d)->wait_for_go() not finishing\n",
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ovl->id);
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r = 0;
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break;
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}
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r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
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if (r == -ERESTARTSYS)
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break;
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if (r) {
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DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
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break;
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}
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}
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dispc_runtime_put();
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return r;
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}
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|
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static void dss_ovl_write_regs(struct omap_overlay *ovl)
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{
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struct ovl_priv_data *op = get_ovl_priv(ovl);
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struct omap_overlay_info *oi;
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bool ilace, replication;
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struct mgr_priv_data *mp;
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int r;
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DSSDBGF("%d", ovl->id);
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if (!op->enabled || !op->info_dirty)
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return;
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oi = &op->info;
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mp = get_mgr_priv(ovl->manager);
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replication = dss_use_replication(ovl->manager->device, oi->color_mode);
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|
|
ilace = ovl->manager->device->type == OMAP_DISPLAY_TYPE_VENC;
|
|
|
|
r = dispc_ovl_setup(ovl->id, oi, ilace, replication, &mp->timings);
|
|
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;
|
|
|
|
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_mgr_write_regs_extra(struct omap_overlay_manager *mgr)
|
|
{
|
|
struct mgr_priv_data *mp = get_mgr_priv(mgr);
|
|
|
|
DSSDBGF("%d", mgr->id);
|
|
|
|
if (!mp->extra_info_dirty)
|
|
return;
|
|
|
|
dispc_mgr_set_timings(mgr->id, &mp->timings);
|
|
|
|
mp->extra_info_dirty = false;
|
|
if (mp->updating)
|
|
mp->shadow_extra_info_dirty = true;
|
|
}
|
|
|
|
static void dss_write_regs_common(void)
|
|
{
|
|
const int num_mgrs = omap_dss_get_num_overlay_managers();
|
|
int i;
|
|
|
|
if (!dss_data.fifo_merge_dirty)
|
|
return;
|
|
|
|
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) {
|
|
if (dss_data.fifo_merge_dirty) {
|
|
dispc_enable_fifomerge(dss_data.fifo_merge);
|
|
dss_data.fifo_merge_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;
|
|
|
|
dss_write_regs_common();
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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);
|
|
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);
|
|
|
|
dss_write_regs_common();
|
|
|
|
mp->updating = true;
|
|
|
|
if (!dss_data.irq_enabled && need_isr())
|
|
dss_register_vsync_isr();
|
|
|
|
dispc_mgr_enable(mgr->id, true);
|
|
|
|
mgr_clear_shadow_dirty(mgr);
|
|
|
|
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;
|
|
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);
|
|
}
|
|
}
|
|
|
|
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);
|
|
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_apply_fifo_merge(bool use_fifo_merge)
|
|
{
|
|
if (dss_data.fifo_merge == use_fifo_merge)
|
|
return;
|
|
|
|
dss_data.fifo_merge = use_fifo_merge;
|
|
dss_data.fifo_merge_dirty = true;
|
|
}
|
|
|
|
static void dss_ovl_setup_fifo(struct omap_overlay *ovl,
|
|
bool use_fifo_merge)
|
|
{
|
|
struct ovl_priv_data *op = get_ovl_priv(ovl);
|
|
u32 fifo_low, fifo_high;
|
|
|
|
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,
|
|
bool use_fifo_merge)
|
|
{
|
|
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, use_fifo_merge);
|
|
}
|
|
|
|
static void dss_setup_fifos(bool use_fifo_merge)
|
|
{
|
|
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, use_fifo_merge);
|
|
}
|
|
}
|
|
|
|
static int get_num_used_managers(void)
|
|
{
|
|
const int num_mgrs = omap_dss_get_num_overlay_managers();
|
|
struct omap_overlay_manager *mgr;
|
|
struct mgr_priv_data *mp;
|
|
int i;
|
|
int enabled_mgrs;
|
|
|
|
enabled_mgrs = 0;
|
|
|
|
for (i = 0; i < num_mgrs; ++i) {
|
|
mgr = omap_dss_get_overlay_manager(i);
|
|
mp = get_mgr_priv(mgr);
|
|
|
|
if (!mp->enabled)
|
|
continue;
|
|
|
|
enabled_mgrs++;
|
|
}
|
|
|
|
return enabled_mgrs;
|
|
}
|
|
|
|
static int get_num_used_overlays(void)
|
|
{
|
|
const int num_ovls = omap_dss_get_num_overlays();
|
|
struct omap_overlay *ovl;
|
|
struct ovl_priv_data *op;
|
|
struct mgr_priv_data *mp;
|
|
int i;
|
|
int enabled_ovls;
|
|
|
|
enabled_ovls = 0;
|
|
|
|
for (i = 0; i < num_ovls; ++i) {
|
|
ovl = omap_dss_get_overlay(i);
|
|
op = get_ovl_priv(ovl);
|
|
|
|
if (!op->enabled && !op->enabling)
|
|
continue;
|
|
|
|
mp = get_mgr_priv(ovl->manager);
|
|
|
|
if (!mp->enabled)
|
|
continue;
|
|
|
|
enabled_ovls++;
|
|
}
|
|
|
|
return enabled_ovls;
|
|
}
|
|
|
|
static bool get_use_fifo_merge(void)
|
|
{
|
|
int enabled_mgrs = get_num_used_managers();
|
|
int enabled_ovls = get_num_used_overlays();
|
|
|
|
if (!dss_has_feature(FEAT_FIFO_MERGE))
|
|
return false;
|
|
|
|
/*
|
|
* In theory the only requirement for fifomerge is enabled_ovls <= 1.
|
|
* However, if we have two managers enabled and set/unset the fifomerge,
|
|
* we need to set the GO bits in particular sequence for the managers,
|
|
* and wait in between.
|
|
*
|
|
* This is rather difficult as new apply calls can happen at any time,
|
|
* so we simplify the problem by requiring also that enabled_mgrs <= 1.
|
|
* In practice this shouldn't matter, because when only one overlay is
|
|
* enabled, most likely only one output is enabled.
|
|
*/
|
|
|
|
return enabled_mgrs <= 1 && enabled_ovls <= 1;
|
|
}
|
|
|
|
int dss_mgr_enable(struct omap_overlay_manager *mgr)
|
|
{
|
|
struct mgr_priv_data *mp = get_mgr_priv(mgr);
|
|
unsigned long flags;
|
|
int r;
|
|
bool fifo_merge;
|
|
|
|
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;
|
|
}
|
|
|
|
/* step 1: setup fifos/fifomerge before enabling the manager */
|
|
|
|
fifo_merge = get_use_fifo_merge();
|
|
dss_setup_fifos(fifo_merge);
|
|
dss_apply_fifo_merge(fifo_merge);
|
|
|
|
dss_write_regs();
|
|
dss_set_go_bits();
|
|
|
|
spin_unlock_irqrestore(&data_lock, flags);
|
|
|
|
/* wait until fifo config is in */
|
|
wait_pending_extra_info_updates();
|
|
|
|
/* step 2: enable the manager */
|
|
spin_lock_irqsave(&data_lock, flags);
|
|
|
|
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;
|
|
bool fifo_merge;
|
|
|
|
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;
|
|
|
|
fifo_merge = get_use_fifo_merge();
|
|
dss_setup_fifos(fifo_merge);
|
|
dss_apply_fifo_merge(fifo_merge);
|
|
|
|
dss_write_regs();
|
|
dss_set_go_bits();
|
|
|
|
spin_unlock_irqrestore(&data_lock, flags);
|
|
|
|
wait_pending_extra_info_updates();
|
|
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;
|
|
}
|
|
|
|
static void dss_apply_mgr_timings(struct omap_overlay_manager *mgr,
|
|
struct omap_video_timings *timings)
|
|
{
|
|
struct mgr_priv_data *mp = get_mgr_priv(mgr);
|
|
|
|
mp->timings = *timings;
|
|
mp->extra_info_dirty = true;
|
|
}
|
|
|
|
void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
|
|
struct omap_video_timings *timings)
|
|
{
|
|
unsigned long flags;
|
|
|
|
mutex_lock(&apply_lock);
|
|
|
|
spin_lock_irqsave(&data_lock, flags);
|
|
|
|
dss_apply_mgr_timings(mgr, timings);
|
|
|
|
dss_write_regs();
|
|
dss_set_go_bits();
|
|
|
|
spin_unlock_irqrestore(&data_lock, flags);
|
|
|
|
wait_pending_extra_info_updates();
|
|
|
|
mutex_unlock(&apply_lock);
|
|
}
|
|
|
|
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;
|
|
bool fifo_merge;
|
|
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);
|
|
if (r) {
|
|
DSSERR("failed to enable overlay %d: check_settings failed\n",
|
|
ovl->id);
|
|
goto err2;
|
|
}
|
|
|
|
/* step 1: configure fifos/fifomerge for currently enabled ovls */
|
|
|
|
fifo_merge = get_use_fifo_merge();
|
|
dss_setup_fifos(fifo_merge);
|
|
dss_apply_fifo_merge(fifo_merge);
|
|
|
|
dss_write_regs();
|
|
dss_set_go_bits();
|
|
|
|
spin_unlock_irqrestore(&data_lock, flags);
|
|
|
|
/* wait for fifo configs to go in */
|
|
wait_pending_extra_info_updates();
|
|
|
|
/* step 2: enable the overlay */
|
|
spin_lock_irqsave(&data_lock, flags);
|
|
|
|
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;
|
|
bool fifo_merge;
|
|
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;
|
|
}
|
|
|
|
/* step 1: disable the overlay */
|
|
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();
|
|
|
|
/* step 2: configure fifos/fifomerge */
|
|
spin_lock_irqsave(&data_lock, flags);
|
|
|
|
fifo_merge = get_use_fifo_merge();
|
|
dss_setup_fifos(fifo_merge);
|
|
dss_apply_fifo_merge(fifo_merge);
|
|
|
|
dss_write_regs();
|
|
dss_set_go_bits();
|
|
|
|
spin_unlock_irqrestore(&data_lock, flags);
|
|
|
|
/* wait for fifo config to go in */
|
|
wait_pending_extra_info_updates();
|
|
|
|
mutex_unlock(&apply_lock);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
mutex_unlock(&apply_lock);
|
|
return r;
|
|
}
|
|
|