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path: root/drivers/video/omap2/dss/manager.c
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Diffstat (limited to 'drivers/video/omap2/dss/manager.c')
-rw-r--r--drivers/video/omap2/dss/manager.c1487
1 files changed, 1487 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
new file mode 100644
index 000000000000..27d9c465c851
--- /dev/null
+++ b/drivers/video/omap2/dss/manager.c
@@ -0,0 +1,1487 @@
+/*
+ * linux/drivers/video/omap2/dss/manager.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+ *
+ * Some code and ideas taken from drivers/video/omap/ driver
+ * by Imre Deak.
+ *
+ * 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 "MANAGER"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/jiffies.h>
+
+#include <plat/display.h>
+#include <plat/cpu.h>
+
+#include "dss.h"
+
+static int num_managers;
+static struct list_head manager_list;
+
+static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
+}
+
+static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+ mgr->device ? mgr->device->name : "<none>");
+}
+
+static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ int r = 0;
+ size_t len = size;
+ struct omap_dss_device *dssdev = NULL;
+
+ int match(struct omap_dss_device *dssdev, void *data)
+ {
+ const char *str = data;
+ return sysfs_streq(dssdev->name, str);
+ }
+
+ if (buf[size-1] == '\n')
+ --len;
+
+ if (len > 0)
+ dssdev = omap_dss_find_device((void *)buf, match);
+
+ if (len > 0 && dssdev == NULL)
+ return -EINVAL;
+
+ if (dssdev)
+ DSSDBG("display %s found\n", dssdev->name);
+
+ if (mgr->device) {
+ r = mgr->unset_device(mgr);
+ if (r) {
+ DSSERR("failed to unset display\n");
+ goto put_device;
+ }
+ }
+
+ if (dssdev) {
+ r = mgr->set_device(mgr, dssdev);
+ if (r) {
+ DSSERR("failed to set manager\n");
+ goto put_device;
+ }
+
+ r = mgr->apply(mgr);
+ if (r) {
+ DSSERR("failed to apply dispc config\n");
+ goto put_device;
+ }
+ }
+
+put_device:
+ if (dssdev)
+ omap_dss_put_device(dssdev);
+
+ return r ? r : size;
+}
+
+static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.default_color);
+}
+
+static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ u32 color;
+ int r;
+
+ if (sscanf(buf, "%d", &color) != 1)
+ return -EINVAL;
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.default_color = color;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static const char *trans_key_type_str[] = {
+ "gfx-destination",
+ "video-source",
+};
+
+static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ enum omap_dss_trans_key_type key_type;
+
+ key_type = mgr->info.trans_key_type;
+ BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
+}
+
+static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ enum omap_dss_trans_key_type key_type;
+ struct omap_overlay_manager_info info;
+ int r;
+
+ for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
+ key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
+ if (sysfs_streq(buf, trans_key_type_str[key_type]))
+ break;
+ }
+
+ if (key_type == ARRAY_SIZE(trans_key_type_str))
+ return -EINVAL;
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.trans_key_type = key_type;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_key);
+}
+
+static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ u32 key_value;
+ int r;
+
+ if (sscanf(buf, "%d", &key_value) != 1)
+ return -EINVAL;
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.trans_key = key_value;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_enabled);
+}
+
+static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ int enable;
+ int r;
+
+ if (sscanf(buf, "%d", &enable) != 1)
+ return -EINVAL;
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.trans_enabled = enable ? true : false;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t manager_alpha_blending_enabled_show(
+ struct omap_overlay_manager *mgr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.alpha_enabled);
+}
+
+static ssize_t manager_alpha_blending_enabled_store(
+ struct omap_overlay_manager *mgr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager_info info;
+ int enable;
+ int r;
+
+ if (sscanf(buf, "%d", &enable) != 1)
+ return -EINVAL;
+
+ mgr->get_manager_info(mgr, &info);
+
+ info.alpha_enabled = enable ? true : false;
+
+ r = mgr->set_manager_info(mgr, &info);
+ if (r)
+ return r;
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+
+ return size;
+}
+
+struct manager_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct omap_overlay_manager *, char *);
+ ssize_t (*store)(struct omap_overlay_manager *, const char *, size_t);
+};
+
+#define MANAGER_ATTR(_name, _mode, _show, _store) \
+ struct manager_attribute manager_attr_##_name = \
+ __ATTR(_name, _mode, _show, _store)
+
+static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
+static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
+ manager_display_show, manager_display_store);
+static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
+ manager_default_color_show, manager_default_color_store);
+static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
+ manager_trans_key_type_show, manager_trans_key_type_store);
+static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
+ manager_trans_key_value_show, manager_trans_key_value_store);
+static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
+ manager_trans_key_enabled_show,
+ manager_trans_key_enabled_store);
+static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
+ manager_alpha_blending_enabled_show,
+ manager_alpha_blending_enabled_store);
+
+
+static struct attribute *manager_sysfs_attrs[] = {
+ &manager_attr_name.attr,
+ &manager_attr_display.attr,
+ &manager_attr_default_color.attr,
+ &manager_attr_trans_key_type.attr,
+ &manager_attr_trans_key_value.attr,
+ &manager_attr_trans_key_enabled.attr,
+ &manager_attr_alpha_blending_enabled.attr,
+ NULL
+};
+
+static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct omap_overlay_manager *manager;
+ struct manager_attribute *manager_attr;
+
+ manager = container_of(kobj, struct omap_overlay_manager, kobj);
+ manager_attr = container_of(attr, struct manager_attribute, attr);
+
+ if (!manager_attr->show)
+ return -ENOENT;
+
+ return manager_attr->show(manager, buf);
+}
+
+static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay_manager *manager;
+ struct manager_attribute *manager_attr;
+
+ manager = container_of(kobj, struct omap_overlay_manager, kobj);
+ manager_attr = container_of(attr, struct manager_attribute, attr);
+
+ if (!manager_attr->store)
+ return -ENOENT;
+
+ return manager_attr->store(manager, buf, size);
+}
+
+static struct sysfs_ops manager_sysfs_ops = {
+ .show = manager_attr_show,
+ .store = manager_attr_store,
+};
+
+static struct kobj_type manager_ktype = {
+ .sysfs_ops = &manager_sysfs_ops,
+ .default_attrs = manager_sysfs_attrs,
+};
+
+/*
+ * We have 4 levels of cache for the dispc settings. First two are in SW and
+ * the latter two in HW.
+ *
+ * +--------------------+
+ * |overlay/manager_info|
+ * +--------------------+
+ * v
+ * apply()
+ * v
+ * +--------------------+
+ * | dss_cache |
+ * +--------------------+
+ * v
+ * configure()
+ * v
+ * +--------------------+
+ * | shadow registers |
+ * +--------------------+
+ * v
+ * VFP or lcd/digit_enable
+ * v
+ * +--------------------+
+ * | registers |
+ * +--------------------+
+ */
+
+struct overlay_cache_data {
+ /* If true, cache changed, but not written to shadow registers. Set
+ * in apply(), cleared when registers written. */
+ bool dirty;
+ /* If true, shadow registers contain changed values not yet in real
+ * registers. Set when writing to shadow registers, cleared at
+ * VSYNC/EVSYNC */
+ bool shadow_dirty;
+
+ bool enabled;
+
+ u32 paddr;
+ void __iomem *vaddr;
+ u16 screen_width;
+ u16 width;
+ u16 height;
+ enum omap_color_mode color_mode;
+ u8 rotation;
+ enum omap_dss_rotation_type rotation_type;
+ bool mirror;
+
+ u16 pos_x;
+ u16 pos_y;
+ u16 out_width; /* if 0, out_width == width */
+ u16 out_height; /* if 0, out_height == height */
+ u8 global_alpha;
+
+ enum omap_channel channel;
+ bool replication;
+ bool ilace;
+
+ enum omap_burst_size burst_size;
+ u32 fifo_low;
+ u32 fifo_high;
+
+ bool manual_update;
+};
+
+struct manager_cache_data {
+ /* If true, cache changed, but not written to shadow registers. Set
+ * in apply(), cleared when registers written. */
+ bool dirty;
+ /* If true, shadow registers contain changed values not yet in real
+ * registers. Set when writing to shadow registers, cleared at
+ * VSYNC/EVSYNC */
+ bool shadow_dirty;
+
+ u32 default_color;
+
+ enum omap_dss_trans_key_type trans_key_type;
+ u32 trans_key;
+ bool trans_enabled;
+
+ bool alpha_enabled;
+
+ bool manual_upd_display;
+ bool manual_update;
+ bool do_manual_update;
+
+ /* manual update region */
+ u16 x, y, w, h;
+};
+
+static struct {
+ spinlock_t lock;
+ struct overlay_cache_data overlay_cache[3];
+ struct manager_cache_data manager_cache[2];
+
+ bool irq_enabled;
+} dss_cache;
+
+
+
+static int omap_dss_set_device(struct omap_overlay_manager *mgr,
+ struct omap_dss_device *dssdev)
+{
+ int i;
+ int r;
+
+ if (dssdev->manager) {
+ DSSERR("display '%s' already has a manager '%s'\n",
+ dssdev->name, dssdev->manager->name);
+ return -EINVAL;
+ }
+
+ if ((mgr->supported_displays & dssdev->type) == 0) {
+ DSSERR("display '%s' does not support manager '%s'\n",
+ dssdev->name, mgr->name);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < mgr->num_overlays; i++) {
+ struct omap_overlay *ovl = mgr->overlays[i];
+
+ if (ovl->manager != mgr || !ovl->info.enabled)
+ continue;
+
+ r = dss_check_overlay(ovl, dssdev);
+ if (r)
+ return r;
+ }
+
+ dssdev->manager = mgr;
+ mgr->device = dssdev;
+ mgr->device_changed = true;
+
+ return 0;
+}
+
+static int omap_dss_unset_device(struct omap_overlay_manager *mgr)
+{
+ if (!mgr->device) {
+ DSSERR("failed to unset display, display not set.\n");
+ return -EINVAL;
+ }
+
+ mgr->device->manager = NULL;
+ mgr->device = NULL;
+ mgr->device_changed = true;
+
+ return 0;
+}
+
+static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
+{
+ unsigned long timeout = msecs_to_jiffies(500);
+ struct manager_cache_data *mc;
+ enum omap_channel channel;
+ u32 irq;
+ int r;
+ int i;
+
+ if (!mgr->device)
+ return 0;
+
+ if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) {
+ irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
+ channel = OMAP_DSS_CHANNEL_DIGIT;
+ } else {
+ if (mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
+ enum omap_dss_update_mode mode;
+ mode = mgr->device->get_update_mode(mgr->device);
+ if (mode != OMAP_DSS_UPDATE_AUTO)
+ return 0;
+
+ irq = DISPC_IRQ_FRAMEDONE;
+ } else {
+ irq = DISPC_IRQ_VSYNC;
+ }
+ channel = OMAP_DSS_CHANNEL_LCD;
+ }
+
+ mc = &dss_cache.manager_cache[mgr->id];
+ i = 0;
+ while (1) {
+ unsigned long flags;
+ bool shadow_dirty, dirty;
+
+ spin_lock_irqsave(&dss_cache.lock, flags);
+ dirty = mc->dirty;
+ shadow_dirty = mc->shadow_dirty;
+ spin_unlock_irqrestore(&dss_cache.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);
+ enum omap_channel channel;
+ struct overlay_cache_data *oc;
+ struct omap_dss_device *dssdev;
+ u32 irq;
+ int r;
+ int i;
+
+ if (!ovl->manager || !ovl->manager->device)
+ return 0;
+
+ dssdev = ovl->manager->device;
+
+ if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
+ irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
+ channel = OMAP_DSS_CHANNEL_DIGIT;
+ } else {
+ if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
+ enum omap_dss_update_mode mode;
+ mode = dssdev->get_update_mode(dssdev);
+ if (mode != OMAP_DSS_UPDATE_AUTO)
+ return 0;
+
+ irq = DISPC_IRQ_FRAMEDONE;
+ } else {
+ irq = DISPC_IRQ_VSYNC;
+ }
+ channel = OMAP_DSS_CHANNEL_LCD;
+ }
+
+ oc = &dss_cache.overlay_cache[ovl->id];
+ i = 0;
+ while (1) {
+ unsigned long flags;
+ bool shadow_dirty, dirty;
+
+ spin_lock_irqsave(&dss_cache.lock, flags);
+ dirty = oc->dirty;
+ shadow_dirty = oc->shadow_dirty;
+ spin_unlock_irqrestore(&dss_cache.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 int overlay_enabled(struct omap_overlay *ovl)
+{
+ return ovl->info.enabled && ovl->manager && ovl->manager->device;
+}
+
+/* Is rect1 a subset of rect2? */
+static bool rectangle_subset(int x1, int y1, int w1, int h1,
+ int x2, int y2, int w2, int h2)
+{
+ if (x1 < x2 || y1 < y2)
+ return false;
+
+ if (x1 + w1 > x2 + w2)
+ return false;
+
+ if (y1 + h1 > y2 + h2)
+ return false;
+
+ return true;
+}
+
+/* Do rect1 and rect2 overlap? */
+static bool rectangle_intersects(int x1, int y1, int w1, int h1,
+ int x2, int y2, int w2, int h2)
+{
+ if (x1 >= x2 + w2)
+ return false;
+
+ if (x2 >= x1 + w1)
+ return false;
+
+ if (y1 >= y2 + h2)
+ return false;
+
+ if (y2 >= y1 + h1)
+ return false;
+
+ return true;
+}
+
+static bool dispc_is_overlay_scaled(struct overlay_cache_data *oc)
+{
+ if (oc->out_width != 0 && oc->width != oc->out_width)
+ return true;
+
+ if (oc->out_height != 0 && oc->height != oc->out_height)
+ return true;
+
+ return false;
+}
+
+static int configure_overlay(enum omap_plane plane)
+{
+ struct overlay_cache_data *c;
+ struct manager_cache_data *mc;
+ u16 outw, outh;
+ u16 x, y, w, h;
+ u32 paddr;
+ int r;
+
+ DSSDBGF("%d", plane);
+
+ c = &dss_cache.overlay_cache[plane];
+
+ if (!c->enabled) {
+ dispc_enable_plane(plane, 0);
+ return 0;
+ }
+
+ mc = &dss_cache.manager_cache[c->channel];
+
+ x = c->pos_x;
+ y = c->pos_y;
+ w = c->width;
+ h = c->height;
+ outw = c->out_width == 0 ? c->width : c->out_width;
+ outh = c->out_height == 0 ? c->height : c->out_height;
+ paddr = c->paddr;
+
+ if (c->manual_update && mc->do_manual_update) {
+ unsigned bpp;
+ /* If the overlay is outside the update region, disable it */
+ if (!rectangle_intersects(mc->x, mc->y, mc->w, mc->h,
+ x, y, outw, outh)) {
+ dispc_enable_plane(plane, 0);
+ return 0;
+ }
+
+ switch (c->color_mode) {
+ case OMAP_DSS_COLOR_RGB16:
+ case OMAP_DSS_COLOR_ARGB16:
+ case OMAP_DSS_COLOR_YUV2:
+ case OMAP_DSS_COLOR_UYVY:
+ bpp = 16;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24P:
+ bpp = 24;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24U:
+ case OMAP_DSS_COLOR_ARGB32:
+ case OMAP_DSS_COLOR_RGBA32:
+ case OMAP_DSS_COLOR_RGBX32:
+ bpp = 32;
+ break;
+
+ default:
+ BUG();
+ }
+
+ if (dispc_is_overlay_scaled(c)) {
+ /* If the overlay is scaled, the update area has
+ * already been enlarged to cover the whole overlay. We
+ * only need to adjust x/y here */
+ x = c->pos_x - mc->x;
+ y = c->pos_y - mc->y;
+ } else {
+ if (mc->x > c->pos_x) {
+ x = 0;
+ w -= (mc->x - c->pos_x);
+ paddr += (mc->x - c->pos_x) * bpp / 8;
+ } else {
+ x = c->pos_x - mc->x;
+ }
+
+ if (mc->y > c->pos_y) {
+ y = 0;
+ h -= (mc->y - c->pos_y);
+ paddr += (mc->y - c->pos_y) * c->screen_width *
+ bpp / 8;
+ } else {
+ y = c->pos_y - mc->y;
+ }
+
+ if (mc->w < (x+w))
+ w -= (x+w) - (mc->w);
+
+ if (mc->h < (y+h))
+ h -= (y+h) - (mc->h);
+
+ outw = w;
+ outh = h;
+ }
+ }
+
+ r = dispc_setup_plane(plane,
+ paddr,
+ c->screen_width,
+ x, y,
+ w, h,
+ outw, outh,
+ c->color_mode,
+ c->ilace,
+ c->rotation_type,
+ c->rotation,
+ c->mirror,
+ c->global_alpha);
+
+ if (r) {
+ /* this shouldn't happen */
+ DSSERR("dispc_setup_plane failed for ovl %d\n", plane);
+ dispc_enable_plane(plane, 0);
+ return r;
+ }
+
+ dispc_enable_replication(plane, c->replication);
+
+ dispc_set_burst_size(plane, c->burst_size);
+ dispc_setup_plane_fifo(plane, c->fifo_low, c->fifo_high);
+
+ dispc_enable_plane(plane, 1);
+
+ return 0;
+}
+
+static void configure_manager(enum omap_channel channel)
+{
+ struct manager_cache_data *c;
+
+ DSSDBGF("%d", channel);
+
+ c = &dss_cache.manager_cache[channel];
+
+ dispc_set_trans_key(channel, c->trans_key_type, c->trans_key);
+ dispc_enable_trans_key(channel, c->trans_enabled);
+ dispc_enable_alpha_blending(channel, c->alpha_enabled);
+}
+
+/* configure_dispc() tries to write values from cache to shadow registers.
+ * It writes only to those managers/overlays that are not busy.
+ * returns 0 if everything could be written to shadow registers.
+ * returns 1 if not everything could be written to shadow registers. */
+static int configure_dispc(void)
+{
+ struct overlay_cache_data *oc;
+ struct manager_cache_data *mc;
+ const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
+ const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
+ int i;
+ int r;
+ bool mgr_busy[2];
+ bool mgr_go[2];
+ bool busy;
+
+ r = 0;
+ busy = false;
+
+ mgr_busy[0] = dispc_go_busy(0);
+ mgr_busy[1] = dispc_go_busy(1);
+ mgr_go[0] = false;
+ mgr_go[1] = false;
+
+ /* Commit overlay settings */
+ for (i = 0; i < num_ovls; ++i) {
+ oc = &dss_cache.overlay_cache[i];
+ mc = &dss_cache.manager_cache[oc->channel];
+
+ if (!oc->dirty)
+ continue;
+
+ if (oc->manual_update && !mc->do_manual_update)
+ continue;
+
+ if (mgr_busy[oc->channel]) {
+ busy = true;
+ continue;
+ }
+
+ r = configure_overlay(i);
+ if (r)
+ DSSERR("configure_overlay %d failed\n", i);
+
+ oc->dirty = false;
+ oc->shadow_dirty = true;
+ mgr_go[oc->channel] = true;
+ }
+
+ /* Commit manager settings */
+ for (i = 0; i < num_mgrs; ++i) {
+ mc = &dss_cache.manager_cache[i];
+
+ if (!mc->dirty)
+ continue;
+
+ if (mc->manual_update && !mc->do_manual_update)
+ continue;
+
+ if (mgr_busy[i]) {
+ busy = true;
+ continue;
+ }
+
+ configure_manager(i);
+ mc->dirty = false;
+ mc->shadow_dirty = true;
+ mgr_go[i] = true;
+ }
+
+ /* set GO */
+ for (i = 0; i < num_mgrs; ++i) {
+ mc = &dss_cache.manager_cache[i];
+
+ if (!mgr_go[i])
+ continue;
+
+ /* We don't need GO with manual update display. LCD iface will
+ * always be turned off after frame, and new settings will be
+ * taken in to use at next update */
+ if (!mc->manual_upd_display)
+ dispc_go(i);
+ }
+
+ if (busy)
+ r = 1;
+ else
+ r = 0;
+
+ return r;
+}
+
+/* Configure dispc for partial update. Return possibly modified update
+ * area */
+void dss_setup_partial_planes(struct omap_dss_device *dssdev,
+ u16 *xi, u16 *yi, u16 *wi, u16 *hi)
+{
+ struct overlay_cache_data *oc;
+ struct manager_cache_data *mc;
+ const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
+ struct omap_overlay_manager *mgr;
+ int i;
+ u16 x, y, w, h;
+ unsigned long flags;
+
+ x = *xi;
+ y = *yi;
+ w = *wi;
+ h = *hi;
+
+ DSSDBG("dispc_setup_partial_planes %d,%d %dx%d\n",
+ *xi, *yi, *wi, *hi);
+
+ mgr = dssdev->manager;
+
+ if (!mgr) {
+ DSSDBG("no manager\n");
+ return;
+ }
+
+ spin_lock_irqsave(&dss_cache.lock, flags);
+
+ /* We need to show the whole overlay if it is scaled. So look for
+ * those, and make the update area larger if found.
+ * Also mark the overlay cache dirty */
+ for (i = 0; i < num_ovls; ++i) {
+ unsigned x1, y1, x2, y2;
+ unsigned outw, outh;
+
+ oc = &dss_cache.overlay_cache[i];
+
+ if (oc->channel != mgr->id)
+ continue;
+
+ oc->dirty = true;
+
+ if (!oc->enabled)
+ continue;
+
+ if (!dispc_is_overlay_scaled(oc))
+ continue;
+
+ outw = oc->out_width == 0 ? oc->width : oc->out_width;
+ outh = oc->out_height == 0 ? oc->height : oc->out_height;
+
+ /* is the overlay outside the update region? */
+ if (!rectangle_intersects(x, y, w, h,
+ oc->pos_x, oc->pos_y,
+ outw, outh))
+ continue;
+
+ /* if the overlay totally inside the update region? */
+ if (rectangle_subset(oc->pos_x, oc->pos_y, outw, outh,
+ x, y, w, h))
+ continue;
+
+ if (x > oc->pos_x)
+ x1 = oc->pos_x;
+ else
+ x1 = x;
+
+ if (y > oc->pos_y)
+ y1 = oc->pos_y;
+ else
+ y1 = y;
+
+ if ((x + w) < (oc->pos_x + outw))
+ x2 = oc->pos_x + outw;
+ else
+ x2 = x + w;
+
+ if ((y + h) < (oc->pos_y + outh))
+ y2 = oc->pos_y + outh;
+ else
+ y2 = y + h;
+
+ x = x1;
+ y = y1;
+ w = x2 - x1;
+ h = y2 - y1;
+
+ DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n",
+ i, x, y, w, h);
+ }
+
+ mc = &dss_cache.manager_cache[mgr->id];
+ mc->do_manual_update = true;
+ mc->x = x;
+ mc->y = y;
+ mc->w = w;
+ mc->h = h;
+
+ configure_dispc();
+
+ mc->do_manual_update = false;
+
+ spin_unlock_irqrestore(&dss_cache.lock, flags);
+
+ *xi = x;
+ *yi = y;
+ *wi = w;
+ *hi = h;
+}
+
+void dss_start_update(struct omap_dss_device *dssdev)
+{
+ struct manager_cache_data *mc;
+ struct overlay_cache_data *oc;
+ const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
+ const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
+ struct omap_overlay_manager *mgr;
+ int i;
+
+ mgr = dssdev->manager;
+
+ for (i = 0; i < num_ovls; ++i) {
+ oc = &dss_cache.overlay_cache[i];
+ if (oc->channel != mgr->id)
+ continue;
+
+ oc->shadow_dirty = false;
+ }
+
+ for (i = 0; i < num_mgrs; ++i) {
+ mc = &dss_cache.manager_cache[i];
+ if (mgr->id != i)
+ continue;
+
+ mc->shadow_dirty = false;
+ }
+
+ dispc_enable_lcd_out(1);
+}
+
+static void dss_apply_irq_handler(void *data, u32 mask)
+{
+ struct manager_cache_data *mc;
+ struct overlay_cache_data *oc;
+ const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
+ const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
+ int i, r;
+ bool mgr_busy[2];
+
+ mgr_busy[0] = dispc_go_busy(0);
+ mgr_busy[1] = dispc_go_busy(1);
+
+ spin_lock(&dss_cache.lock);
+
+ for (i = 0; i < num_ovls; ++i) {
+ oc = &dss_cache.overlay_cache[i];
+ if (!mgr_busy[oc->channel])
+ oc->shadow_dirty = false;
+ }
+
+ for (i = 0; i < num_mgrs; ++i) {
+ mc = &dss_cache.manager_cache[i];
+ if (!mgr_busy[i])
+ mc->shadow_dirty = false;
+ }
+
+ r = configure_dispc();
+ if (r == 1)
+ goto end;
+
+ /* re-read busy flags */
+ mgr_busy[0] = dispc_go_busy(0);
+ mgr_busy[1] = dispc_go_busy(1);
+
+ /* keep running as long as there are busy managers, so that
+ * we can collect overlay-applied information */
+ for (i = 0; i < num_mgrs; ++i) {
+ if (mgr_busy[i])
+ goto end;
+ }
+
+ omap_dispc_unregister_isr(dss_apply_irq_handler, NULL,
+ DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
+ DISPC_IRQ_EVSYNC_EVEN);
+ dss_cache.irq_enabled = false;
+
+end:
+ spin_unlock(&dss_cache.lock);
+}
+
+static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
+{
+ struct overlay_cache_data *oc;
+ struct manager_cache_data *mc;
+ int i;
+ struct omap_overlay *ovl;
+ int num_planes_enabled = 0;
+ bool use_fifomerge;
+ unsigned long flags;
+ int r;
+
+ DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
+
+ spin_lock_irqsave(&dss_cache.lock, flags);
+
+ /* Configure overlays */
+ for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
+ struct omap_dss_device *dssdev;
+
+ ovl = omap_dss_get_overlay(i);
+
+ if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
+ continue;
+
+ oc = &dss_cache.overlay_cache[ovl->id];
+
+ if (!overlay_enabled(ovl)) {
+ if (oc->enabled) {
+ oc->enabled = false;
+ oc->dirty = true;
+ }
+ continue;
+ }
+
+ if (!ovl->info_dirty) {
+ if (oc->enabled)
+ ++num_planes_enabled;
+ continue;
+ }
+
+ dssdev = ovl->manager->device;
+
+ if (dss_check_overlay(ovl, dssdev)) {
+ if (oc->enabled) {
+ oc->enabled = false;
+ oc->dirty = true;
+ }
+ continue;
+ }
+
+ ovl->info_dirty = false;
+ oc->dirty = true;
+
+ oc->paddr = ovl->info.paddr;
+ oc->vaddr = ovl->info.vaddr;
+ oc->screen_width = ovl->info.screen_width;
+ oc->width = ovl->info.width;
+ oc->height = ovl->info.height;
+ oc->color_mode = ovl->info.color_mode;
+ oc->rotation = ovl->info.rotation;
+ oc->rotation_type = ovl->info.rotation_type;
+ oc->mirror = ovl->info.mirror;
+ oc->pos_x = ovl->info.pos_x;
+ oc->pos_y = ovl->info.pos_y;
+ oc->out_width = ovl->info.out_width;
+ oc->out_height = ovl->info.out_height;
+ oc->global_alpha = ovl->info.global_alpha;
+
+ oc->replication =
+ dss_use_replication(dssdev, ovl->info.color_mode);
+
+ oc->ilace = dssdev->type == OMAP_DISPLAY_TYPE_VENC;
+
+ oc->channel = ovl->manager->id;
+
+ oc->enabled = true;
+
+ oc->manual_update =
+ dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
+ dssdev->get_update_mode(dssdev) != OMAP_DSS_UPDATE_AUTO;
+
+ ++num_planes_enabled;
+ }
+
+ /* Configure managers */
+ list_for_each_entry(mgr, &manager_list, list) {
+ struct omap_dss_device *dssdev;
+
+ if (!(mgr->caps & OMAP_DSS_OVL_MGR_CAP_DISPC))
+ continue;
+
+ mc = &dss_cache.manager_cache[mgr->id];
+
+ if (mgr->device_changed) {
+ mgr->device_changed = false;
+ mgr->info_dirty = true;
+ }
+
+ if (!mgr->info_dirty)
+ continue;
+
+ if (!mgr->device)
+ continue;
+
+ dssdev = mgr->device;
+
+ mgr->info_dirty = false;
+ mc->dirty = true;
+
+ mc->default_color = mgr->info.default_color;
+ mc->trans_key_type = mgr->info.trans_key_type;
+ mc->trans_key = mgr->info.trans_key;
+ mc->trans_enabled = mgr->info.trans_enabled;
+ mc->alpha_enabled = mgr->info.alpha_enabled;
+
+ mc->manual_upd_display =
+ dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
+
+ mc->manual_update =
+ dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
+ dssdev->get_update_mode(dssdev) != OMAP_DSS_UPDATE_AUTO;
+ }
+
+ /* XXX TODO: Try to get fifomerge working. The problem is that it
+ * affects both managers, not individually but at the same time. This
+ * means the change has to be well synchronized. I guess the proper way
+ * is to have a two step process for fifo merge:
+ * fifomerge enable:
+ * 1. disable other planes, leaving one plane enabled
+ * 2. wait until the planes are disabled on HW
+ * 3. config merged fifo thresholds, enable fifomerge
+ * fifomerge disable:
+ * 1. config unmerged fifo thresholds, disable fifomerge
+ * 2. wait until fifo changes are in HW
+ * 3. enable planes
+ */
+ use_fifomerge = false;
+
+ /* Configure overlay fifos */
+ for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
+ struct omap_dss_device *dssdev;
+ u32 size;
+
+ ovl = omap_dss_get_overlay(i);
+
+ if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
+ continue;
+
+ oc = &dss_cache.overlay_cache[ovl->id];
+
+ if (!oc->enabled)
+ continue;
+
+ dssdev = ovl->manager->device;
+
+ size = dispc_get_plane_fifo_size(ovl->id);
+ if (use_fifomerge)
+ size *= 3;
+
+ switch (dssdev->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+ case OMAP_DISPLAY_TYPE_DBI:
+ case OMAP_DISPLAY_TYPE_SDI:
+ case OMAP_DISPLAY_TYPE_VENC:
+ default_get_overlay_fifo_thresholds(ovl->id, size,
+ &oc->burst_size, &oc->fifo_low,
+ &oc->fifo_high);
+ break;
+#ifdef CONFIG_OMAP2_DSS_DSI
+ case OMAP_DISPLAY_TYPE_DSI:
+ dsi_get_overlay_fifo_thresholds(ovl->id, size,
+ &oc->burst_size, &oc->fifo_low,
+ &oc->fifo_high);
+ break;
+#endif
+ default:
+ BUG();
+ }
+ }
+
+ r = 0;
+ dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
+ if (!dss_cache.irq_enabled) {
+ r = omap_dispc_register_isr(dss_apply_irq_handler, NULL,
+ DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
+ DISPC_IRQ_EVSYNC_EVEN);
+ dss_cache.irq_enabled = true;
+ }
+ configure_dispc();
+ dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
+
+ spin_unlock_irqrestore(&dss_cache.lock, flags);
+
+ return r;
+}
+
+static int dss_check_manager(struct omap_overlay_manager *mgr)
+{
+ /* OMAP supports only graphics source transparency color key and alpha
+ * blending simultaneously. See TRM 15.4.2.4.2.2 Alpha Mode */
+
+ if (mgr->info.alpha_enabled && mgr->info.trans_enabled &&
+ mgr->info.trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int omap_dss_mgr_set_info(struct omap_overlay_manager *mgr,
+ struct omap_overlay_manager_info *info)
+{
+ int r;
+ struct omap_overlay_manager_info old_info;
+
+ old_info = mgr->info;
+ mgr->info = *info;
+
+ r = dss_check_manager(mgr);
+ if (r) {
+ mgr->info = old_info;
+ return r;
+ }
+
+ mgr->info_dirty = true;
+
+ return 0;
+}
+
+static void omap_dss_mgr_get_info(struct omap_overlay_manager *mgr,
+ struct omap_overlay_manager_info *info)
+{
+ *info = mgr->info;
+}
+
+static void omap_dss_add_overlay_manager(struct omap_overlay_manager *manager)
+{
+ ++num_managers;
+ list_add_tail(&manager->list, &manager_list);
+}
+
+int dss_init_overlay_managers(struct platform_device *pdev)
+{
+ int i, r;
+
+ spin_lock_init(&dss_cache.lock);
+
+ INIT_LIST_HEAD(&manager_list);
+
+ num_managers = 0;
+
+ for (i = 0; i < 2; ++i) {
+ struct omap_overlay_manager *mgr;
+ mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
+
+ BUG_ON(mgr == NULL);
+
+ switch (i) {
+ case 0:
+ mgr->name = "lcd";
+ mgr->id = OMAP_DSS_CHANNEL_LCD;
+ mgr->supported_displays =
+ OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
+ OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI;
+ break;
+ case 1:
+ mgr->name = "tv";
+ mgr->id = OMAP_DSS_CHANNEL_DIGIT;
+ mgr->supported_displays = OMAP_DISPLAY_TYPE_VENC;
+ break;
+ }
+
+ mgr->set_device = &omap_dss_set_device;
+ mgr->unset_device = &omap_dss_unset_device;
+ mgr->apply = &omap_dss_mgr_apply;
+ mgr->set_manager_info = &omap_dss_mgr_set_info;
+ mgr->get_manager_info = &omap_dss_mgr_get_info;
+ mgr->wait_for_go = &dss_mgr_wait_for_go;
+
+ mgr->caps = OMAP_DSS_OVL_MGR_CAP_DISPC;
+
+ dss_overlay_setup_dispc_manager(mgr);
+
+ omap_dss_add_overlay_manager(mgr);
+
+ r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
+ &pdev->dev.kobj, "manager%d", i);
+
+ if (r) {
+ DSSERR("failed to create sysfs file\n");
+ continue;
+ }
+ }
+
+#ifdef L4_EXAMPLE
+ {
+ int omap_dss_mgr_apply_l4(struct omap_overlay_manager *mgr)
+ {
+ DSSDBG("omap_dss_mgr_apply_l4(%s)\n", mgr->name);
+
+ return 0;
+ }
+
+ struct omap_overlay_manager *mgr;
+ mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
+
+ BUG_ON(mgr == NULL);
+
+ mgr->name = "l4";
+ mgr->supported_displays =
+ OMAP_DISPLAY_TYPE_DBI | OMAP_DISPLAY_TYPE_DSI;
+
+ mgr->set_device = &omap_dss_set_device;
+ mgr->unset_device = &omap_dss_unset_device;
+ mgr->apply = &omap_dss_mgr_apply_l4;
+ mgr->set_manager_info = &omap_dss_mgr_set_info;
+ mgr->get_manager_info = &omap_dss_mgr_get_info;
+
+ dss_overlay_setup_l4_manager(mgr);
+
+ omap_dss_add_overlay_manager(mgr);
+
+ r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
+ &pdev->dev.kobj, "managerl4");
+
+ if (r)
+ DSSERR("failed to create sysfs file\n");
+ }
+#endif
+
+ return 0;
+}
+
+void dss_uninit_overlay_managers(struct platform_device *pdev)
+{
+ struct omap_overlay_manager *mgr;
+
+ while (!list_empty(&manager_list)) {
+ mgr = list_first_entry(&manager_list,
+ struct omap_overlay_manager, list);
+ list_del(&mgr->list);
+ kobject_del(&mgr->kobj);
+ kobject_put(&mgr->kobj);
+ kfree(mgr);
+ }
+
+ num_managers = 0;
+}
+
+int omap_dss_get_num_overlay_managers(void)
+{
+ return num_managers;
+}
+EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
+
+struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
+{
+ int i = 0;
+ struct omap_overlay_manager *mgr;
+
+ list_for_each_entry(mgr, &manager_list, list) {
+ if (i++ == num)
+ return mgr;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(omap_dss_get_overlay_manager);
+

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