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Message-Id: <1251462337-12531-9-git-send-email-tomi.valkeinen@nokia.com>
Date: Fri, 28 Aug 2009 15:25:27 +0300
From: Tomi Valkeinen <tomi.valkeinen@...ia.com>
To: linux-kernel@...r.kernel.org
Cc: Tomi Valkeinen <tomi.valkeinen@...ia.com>
Subject: [PATCH 08/18] OMAP: DSS2: Add more core files
Add more core files to DSS2.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...ia.com>
---
drivers/video/omap2/dss/display.c | 658 ++++++++++++++++
drivers/video/omap2/dss/manager.c | 1487 +++++++++++++++++++++++++++++++++++++
drivers/video/omap2/dss/overlay.c | 673 +++++++++++++++++
3 files changed, 2818 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/omap2/dss/display.c
create mode 100644 drivers/video/omap2/dss/manager.c
create mode 100644 drivers/video/omap2/dss/overlay.c
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
new file mode 100644
index 0000000..6b5d0cf
--- /dev/null
+++ b/drivers/video/omap2/dss/display.c
@@ -0,0 +1,658 @@
+/*
+ * linux/drivers/video/omap2/dss/display.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@...ia.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 "DISPLAY"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/jiffies.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+
+#include <mach/display.h>
+#include "dss.h"
+
+static LIST_HEAD(display_list);
+
+static ssize_t display_enabled_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ bool enabled = dssdev->state != OMAP_DSS_DISPLAY_DISABLED;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", enabled);
+}
+
+static ssize_t display_enabled_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ bool enabled, r;
+
+ enabled = simple_strtoul(buf, NULL, 10);
+
+ if (enabled != (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)) {
+ if (enabled) {
+ r = dssdev->enable(dssdev);
+ if (r)
+ return r;
+ } else {
+ dssdev->disable(dssdev);
+ }
+ }
+
+ return size;
+}
+
+static ssize_t display_upd_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ enum omap_dss_update_mode mode = OMAP_DSS_UPDATE_AUTO;
+ if (dssdev->get_update_mode)
+ mode = dssdev->get_update_mode(dssdev);
+ return snprintf(buf, PAGE_SIZE, "%d\n", mode);
+}
+
+static ssize_t display_upd_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ int val, r;
+ enum omap_dss_update_mode mode;
+
+ val = simple_strtoul(buf, NULL, 10);
+
+ switch (val) {
+ case OMAP_DSS_UPDATE_DISABLED:
+ case OMAP_DSS_UPDATE_AUTO:
+ case OMAP_DSS_UPDATE_MANUAL:
+ mode = (enum omap_dss_update_mode)val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ r = dssdev->set_update_mode(dssdev, mode);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t display_tear_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ dssdev->get_te ? dssdev->get_te(dssdev) : 0);
+}
+
+static ssize_t display_tear_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ unsigned long te;
+ int r;
+
+ if (!dssdev->enable_te || !dssdev->get_te)
+ return -ENOENT;
+
+ te = simple_strtoul(buf, NULL, 0);
+
+ r = dssdev->enable_te(dssdev, te);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t display_timings_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct omap_video_timings t;
+
+ if (!dssdev->get_timings)
+ return -ENOENT;
+
+ dssdev->get_timings(dssdev, &t);
+
+ return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
+ t.pixel_clock,
+ t.x_res, t.hfp, t.hbp, t.hsw,
+ t.y_res, t.vfp, t.vbp, t.vsw);
+}
+
+static ssize_t display_timings_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct omap_video_timings t;
+ int r, found;
+
+ if (!dssdev->set_timings || !dssdev->check_timings)
+ return -ENOENT;
+
+ found = 0;
+#ifdef CONFIG_OMAP2_DSS_VENC
+ if (strncmp("pal", buf, 3) == 0) {
+ t = omap_dss_pal_timings;
+ found = 1;
+ } else if (strncmp("ntsc", buf, 4) == 0) {
+ t = omap_dss_ntsc_timings;
+ found = 1;
+ }
+#endif
+ if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu",
+ &t.pixel_clock,
+ &t.x_res, &t.hfp, &t.hbp, &t.hsw,
+ &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9)
+ return -EINVAL;
+
+ r = dssdev->check_timings(dssdev, &t);
+ if (r)
+ return r;
+
+ dssdev->set_timings(dssdev, &t);
+
+ return size;
+}
+
+static ssize_t display_rotate_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ int rotate;
+ if (!dssdev->get_rotate)
+ return -ENOENT;
+ rotate = dssdev->get_rotate(dssdev);
+ return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
+}
+
+static ssize_t display_rotate_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ unsigned long rot;
+ int r;
+
+ if (!dssdev->set_rotate || !dssdev->get_rotate)
+ return -ENOENT;
+
+ rot = simple_strtoul(buf, NULL, 0);
+
+ r = dssdev->set_rotate(dssdev, rot);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t display_mirror_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ int mirror;
+ if (!dssdev->get_mirror)
+ return -ENOENT;
+ mirror = dssdev->get_mirror(dssdev);
+ return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
+}
+
+static ssize_t display_mirror_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ unsigned long mirror;
+ int r;
+
+ if (!dssdev->set_mirror || !dssdev->get_mirror)
+ return -ENOENT;
+
+ mirror = simple_strtoul(buf, NULL, 0);
+
+ r = dssdev->set_mirror(dssdev, mirror);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static ssize_t display_wss_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ unsigned int wss;
+
+ if (!dssdev->get_wss)
+ return -ENOENT;
+
+ wss = dssdev->get_wss(dssdev);
+
+ return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
+}
+
+static ssize_t display_wss_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ unsigned long wss;
+ int r;
+
+ if (!dssdev->get_wss || !dssdev->set_wss)
+ return -ENOENT;
+
+ if (strict_strtoul(buf, 0, &wss))
+ return -EINVAL;
+
+ if (wss > 0xfffff)
+ return -EINVAL;
+
+ r = dssdev->set_wss(dssdev, wss);
+ if (r)
+ return r;
+
+ return size;
+}
+
+static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR,
+ display_enabled_show, display_enabled_store);
+static DEVICE_ATTR(update_mode, S_IRUGO|S_IWUSR,
+ display_upd_mode_show, display_upd_mode_store);
+static DEVICE_ATTR(tear_elim, S_IRUGO|S_IWUSR,
+ display_tear_show, display_tear_store);
+static DEVICE_ATTR(timings, S_IRUGO|S_IWUSR,
+ display_timings_show, display_timings_store);
+static DEVICE_ATTR(rotate, S_IRUGO|S_IWUSR,
+ display_rotate_show, display_rotate_store);
+static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR,
+ display_mirror_show, display_mirror_store);
+static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR,
+ display_wss_show, display_wss_store);
+
+static struct device_attribute *display_sysfs_attrs[] = {
+ &dev_attr_enabled,
+ &dev_attr_update_mode,
+ &dev_attr_tear_elim,
+ &dev_attr_timings,
+ &dev_attr_rotate,
+ &dev_attr_mirror,
+ &dev_attr_wss,
+ NULL
+};
+
+static void default_get_resolution(struct omap_dss_device *dssdev,
+ u16 *xres, u16 *yres)
+{
+ *xres = dssdev->panel.timings.x_res;
+ *yres = dssdev->panel.timings.y_res;
+}
+
+void default_get_overlay_fifo_thresholds(enum omap_plane plane,
+ u32 fifo_size, enum omap_burst_size *burst_size,
+ u32 *fifo_low, u32 *fifo_high)
+{
+ unsigned burst_size_bytes;
+
+ *burst_size = OMAP_DSS_BURST_16x32;
+ burst_size_bytes = 16 * 32 / 8;
+
+ *fifo_high = fifo_size - 1;
+ *fifo_low = fifo_size - burst_size_bytes;
+}
+
+static int default_wait_vsync(struct omap_dss_device *dssdev)
+{
+ unsigned long timeout = msecs_to_jiffies(500);
+ u32 irq;
+
+ if (dssdev->type == OMAP_DISPLAY_TYPE_VENC)
+ irq = DISPC_IRQ_EVSYNC_ODD;
+ else
+ irq = DISPC_IRQ_VSYNC;
+
+ return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
+}
+
+static int default_get_recommended_bpp(struct omap_dss_device *dssdev)
+{
+ if (dssdev->panel.recommended_bpp)
+ return dssdev->panel.recommended_bpp;
+
+ switch (dssdev->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+ if (dssdev->phy.dpi.data_lines == 24)
+ return 24;
+ else
+ return 16;
+
+ case OMAP_DISPLAY_TYPE_DBI:
+ case OMAP_DISPLAY_TYPE_DSI:
+ if (dssdev->ctrl.pixel_size == 24)
+ return 24;
+ else
+ return 16;
+ case OMAP_DISPLAY_TYPE_VENC:
+ case OMAP_DISPLAY_TYPE_SDI:
+ return 24;
+ return 24;
+ default:
+ BUG();
+ }
+}
+
+/* Checks if replication logic should be used. Only use for active matrix,
+ * when overlay is in RGB12U or RGB16 mode, and LCD interface is
+ * 18bpp or 24bpp */
+bool dss_use_replication(struct omap_dss_device *dssdev,
+ enum omap_color_mode mode)
+{
+ int bpp;
+
+ if (mode != OMAP_DSS_COLOR_RGB12U && mode != OMAP_DSS_COLOR_RGB16)
+ return false;
+
+ if (dssdev->type == OMAP_DISPLAY_TYPE_DPI &&
+ (dssdev->panel.config & OMAP_DSS_LCD_TFT) == 0)
+ return false;
+
+ switch (dssdev->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+ bpp = dssdev->phy.dpi.data_lines;
+ break;
+ case OMAP_DISPLAY_TYPE_VENC:
+ case OMAP_DISPLAY_TYPE_SDI:
+ bpp = 24;
+ break;
+ case OMAP_DISPLAY_TYPE_DBI:
+ case OMAP_DISPLAY_TYPE_DSI:
+ bpp = dssdev->ctrl.pixel_size;
+ break;
+ default:
+ BUG();
+ }
+
+ return bpp > 16;
+}
+
+void dss_init_device(struct platform_device *pdev,
+ struct omap_dss_device *dssdev)
+{
+ struct device_attribute *attr;
+ int i;
+ int r;
+
+ switch (dssdev->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+#ifdef CONFIG_OMAP2_DSS_RFBI
+ case OMAP_DISPLAY_TYPE_DBI:
+#endif
+#ifdef CONFIG_OMAP2_DSS_SDI
+ case OMAP_DISPLAY_TYPE_SDI:
+#endif
+#ifdef CONFIG_OMAP2_DSS_DSI
+ case OMAP_DISPLAY_TYPE_DSI:
+#endif
+#ifdef CONFIG_OMAP2_DSS_VENC
+ case OMAP_DISPLAY_TYPE_VENC:
+#endif
+ break;
+ default:
+ DSSERR("Support for display '%s' not compiled in.\n",
+ dssdev->name);
+ return;
+ }
+
+ dssdev->get_resolution = default_get_resolution;
+ dssdev->get_recommended_bpp = default_get_recommended_bpp;
+ dssdev->wait_vsync = default_wait_vsync;
+
+ switch (dssdev->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+ r = dpi_init_display(dssdev);
+ break;
+#ifdef CONFIG_OMAP2_DSS_RFBI
+ case OMAP_DISPLAY_TYPE_DBI:
+ r = rfbi_init_display(dssdev);
+ break;
+#endif
+#ifdef CONFIG_OMAP2_DSS_VENC
+ case OMAP_DISPLAY_TYPE_VENC:
+ r = venc_init_display(dssdev);
+ break;
+#endif
+#ifdef CONFIG_OMAP2_DSS_SDI
+ case OMAP_DISPLAY_TYPE_SDI:
+ r = sdi_init_display(dssdev);
+ break;
+#endif
+#ifdef CONFIG_OMAP2_DSS_DSI
+ case OMAP_DISPLAY_TYPE_DSI:
+ r = dsi_init_display(dssdev);
+ break;
+#endif
+ default:
+ BUG();
+ }
+
+ if (r) {
+ DSSERR("failed to init display %s\n", dssdev->name);
+ return;
+ }
+
+ /* create device sysfs files */
+ i = 0;
+ while ((attr = display_sysfs_attrs[i++]) != NULL) {
+ r = device_create_file(&dssdev->dev, attr);
+ if (r)
+ DSSERR("failed to create sysfs file\n");
+ }
+
+ /* create display? sysfs links */
+ r = sysfs_create_link(&pdev->dev.kobj, &dssdev->dev.kobj,
+ dev_name(&dssdev->dev));
+ if (r)
+ DSSERR("failed to create sysfs display link\n");
+}
+
+void dss_uninit_device(struct platform_device *pdev,
+ struct omap_dss_device *dssdev)
+{
+ struct device_attribute *attr;
+ int i = 0;
+
+ sysfs_remove_link(&pdev->dev.kobj, dev_name(&dssdev->dev));
+
+ while ((attr = display_sysfs_attrs[i++]) != NULL)
+ device_remove_file(&dssdev->dev, attr);
+
+ if (dssdev->manager)
+ dssdev->manager->unset_device(dssdev->manager);
+}
+
+static int dss_suspend_device(struct device *dev, void *data)
+{
+ int r;
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
+ dssdev->activate_after_resume = false;
+ return 0;
+ }
+
+ if (!dssdev->suspend) {
+ DSSERR("display '%s' doesn't implement suspend\n",
+ dssdev->name);
+ return -ENOSYS;
+ }
+
+ r = dssdev->suspend(dssdev);
+ if (r)
+ return r;
+
+ dssdev->activate_after_resume = true;
+
+ return 0;
+}
+
+int dss_suspend_all_devices(void)
+{
+ int r;
+ struct bus_type *bus = dss_get_bus();
+
+ r = bus_for_each_dev(bus, NULL, NULL, dss_suspend_device);
+ if (r) {
+ /* resume all displays that were suspended */
+ dss_resume_all_devices();
+ return r;
+ }
+
+ return 0;
+}
+
+static int dss_resume_device(struct device *dev, void *data)
+{
+ int r;
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+
+ if (dssdev->activate_after_resume && dssdev->resume) {
+ r = dssdev->resume(dssdev);
+ if (r)
+ return r;
+ }
+
+ dssdev->activate_after_resume = false;
+
+ return 0;
+}
+
+int dss_resume_all_devices(void)
+{
+ struct bus_type *bus = dss_get_bus();
+
+ return bus_for_each_dev(bus, NULL, NULL, dss_resume_device);
+}
+
+
+void omap_dss_get_device(struct omap_dss_device *dssdev)
+{
+ get_device(&dssdev->dev);
+}
+EXPORT_SYMBOL(omap_dss_get_device);
+
+void omap_dss_put_device(struct omap_dss_device *dssdev)
+{
+ put_device(&dssdev->dev);
+}
+EXPORT_SYMBOL(omap_dss_put_device);
+
+/* ref count of the found device is incremented. ref count
+ * of from-device is decremented. */
+struct omap_dss_device *omap_dss_get_next_device(struct omap_dss_device *from)
+{
+ struct device *dev;
+ struct device *dev_start = NULL;
+ struct omap_dss_device *dssdev = NULL;
+
+ int match(struct device *dev, void *data)
+ {
+ /* skip panels connected to controllers */
+ if (to_dss_device(dev)->panel.ctrl)
+ return 0;
+
+ return 1;
+ }
+
+ if (from)
+ dev_start = &from->dev;
+ dev = bus_find_device(dss_get_bus(), dev_start, NULL, match);
+ if (dev)
+ dssdev = to_dss_device(dev);
+ if (from)
+ put_device(&from->dev);
+
+ return dssdev;
+}
+EXPORT_SYMBOL(omap_dss_get_next_device);
+
+struct omap_dss_device *omap_dss_find_device(void *data,
+ int (*match)(struct omap_dss_device *dssdev, void *data))
+{
+ struct omap_dss_device *dssdev = NULL;
+
+ while ((dssdev = omap_dss_get_next_device(dssdev)) != NULL) {
+ if (match(dssdev, data))
+ return dssdev;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(omap_dss_find_device);
+
+int omap_dss_start_device(struct omap_dss_device *dssdev)
+{
+ int r;
+
+ if (!dssdev->driver) {
+ DSSDBG("no driver\n");
+ r = -ENODEV;
+ goto err0;
+ }
+
+ if (dssdev->ctrl.panel && !dssdev->ctrl.panel->driver) {
+ DSSDBG("no panel driver\n");
+ r = -ENODEV;
+ goto err0;
+ }
+
+ if (!try_module_get(dssdev->dev.driver->owner)) {
+ r = -ENODEV;
+ goto err0;
+ }
+
+ if (dssdev->ctrl.panel) {
+ if (!try_module_get(dssdev->ctrl.panel->dev.driver->owner)) {
+ r = -ENODEV;
+ goto err1;
+ }
+ }
+
+ return 0;
+err1:
+ module_put(dssdev->dev.driver->owner);
+err0:
+ return r;
+}
+EXPORT_SYMBOL(omap_dss_start_device);
+
+void omap_dss_stop_device(struct omap_dss_device *dssdev)
+{
+ if (dssdev->ctrl.panel)
+ module_put(dssdev->ctrl.panel->dev.driver->owner);
+
+ module_put(dssdev->dev.driver->owner);
+}
+EXPORT_SYMBOL(omap_dss_stop_device);
+
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
new file mode 100644
index 0000000..7ee0b2b
--- /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@...ia.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 <mach/display.h>
+#include <mach/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);
+
diff --git a/drivers/video/omap2/dss/overlay.c b/drivers/video/omap2/dss/overlay.c
new file mode 100644
index 0000000..c7cb81b
--- /dev/null
+++ b/drivers/video/omap2/dss/overlay.c
@@ -0,0 +1,673 @@
+/*
+ * linux/drivers/video/omap2/dss/overlay.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@...ia.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 "OVERLAY"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/sysfs.h>
+#include <linux/kobject.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#include <mach/display.h>
+
+#include "dss.h"
+
+static int num_overlays;
+static struct list_head overlay_list;
+
+static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
+}
+
+static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+ ovl->manager ? ovl->manager->name : "<none>");
+}
+
+static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf,
+ size_t size)
+{
+ int i, r;
+ struct omap_overlay_manager *mgr = NULL;
+ struct omap_overlay_manager *old_mgr;
+ int len = size;
+
+ if (buf[size-1] == '\n')
+ --len;
+
+ if (len > 0) {
+ for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
+ mgr = omap_dss_get_overlay_manager(i);
+
+ if (strncmp(buf, mgr->name, len) == 0)
+ break;
+
+ mgr = NULL;
+ }
+ }
+
+ if (len > 0 && mgr == NULL)
+ return -EINVAL;
+
+ if (mgr)
+ DSSDBG("manager %s found\n", mgr->name);
+
+ if (mgr == ovl->manager)
+ return size;
+
+ old_mgr = ovl->manager;
+
+ /* detach old manager */
+ if (old_mgr) {
+ r = ovl->unset_manager(ovl);
+ if (r) {
+ DSSERR("detach failed\n");
+ return r;
+ }
+
+ r = old_mgr->apply(old_mgr);
+ if (r)
+ return r;
+ }
+
+ if (mgr) {
+ r = ovl->set_manager(ovl, mgr);
+ if (r) {
+ DSSERR("Failed to attach overlay\n");
+ return r;
+ }
+
+ r = mgr->apply(mgr);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
+static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+ ovl->info.width, ovl->info.height);
+}
+
+static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", ovl->info.screen_width);
+}
+
+static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+ ovl->info.pos_x, ovl->info.pos_y);
+}
+
+static ssize_t overlay_position_store(struct omap_overlay *ovl,
+ const char *buf, size_t size)
+{
+ int r;
+ char *last;
+ struct omap_overlay_info info;
+
+ ovl->get_overlay_info(ovl, &info);
+
+ info.pos_x = simple_strtoul(buf, &last, 10);
+ ++last;
+ if (last - buf >= size)
+ return -EINVAL;
+
+ info.pos_y = simple_strtoul(last, &last, 10);
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r)
+ return r;
+
+ if (ovl->manager) {
+ r = ovl->manager->apply(ovl->manager);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
+static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+ ovl->info.out_width, ovl->info.out_height);
+}
+
+static ssize_t overlay_output_size_store(struct omap_overlay *ovl,
+ const char *buf, size_t size)
+{
+ int r;
+ char *last;
+ struct omap_overlay_info info;
+
+ ovl->get_overlay_info(ovl, &info);
+
+ info.out_width = simple_strtoul(buf, &last, 10);
+ ++last;
+ if (last - buf >= size)
+ return -EINVAL;
+
+ info.out_height = simple_strtoul(last, &last, 10);
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r)
+ return r;
+
+ if (ovl->manager) {
+ r = ovl->manager->apply(ovl->manager);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
+static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", ovl->info.enabled);
+}
+
+static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
+ size_t size)
+{
+ int r;
+ struct omap_overlay_info info;
+
+ ovl->get_overlay_info(ovl, &info);
+
+ info.enabled = simple_strtoul(buf, NULL, 10);
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r)
+ return r;
+
+ if (ovl->manager) {
+ r = ovl->manager->apply(ovl->manager);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
+static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ ovl->info.global_alpha);
+}
+
+static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
+ const char *buf, size_t size)
+{
+ int r;
+ struct omap_overlay_info info;
+
+ ovl->get_overlay_info(ovl, &info);
+
+ /* Video1 plane does not support global alpha
+ * to always make it 255 completely opaque
+ */
+ if (ovl->id == OMAP_DSS_VIDEO1)
+ info.global_alpha = 255;
+ else
+ info.global_alpha = simple_strtoul(buf, NULL, 10);
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r)
+ return r;
+
+ if (ovl->manager) {
+ r = ovl->manager->apply(ovl->manager);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
+struct overlay_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct omap_overlay *, char *);
+ ssize_t (*store)(struct omap_overlay *, const char *, size_t);
+};
+
+#define OVERLAY_ATTR(_name, _mode, _show, _store) \
+ struct overlay_attribute overlay_attr_##_name = \
+ __ATTR(_name, _mode, _show, _store)
+
+static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL);
+static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR,
+ overlay_manager_show, overlay_manager_store);
+static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL);
+static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL);
+static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR,
+ overlay_position_show, overlay_position_store);
+static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR,
+ overlay_output_size_show, overlay_output_size_store);
+static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
+ overlay_enabled_show, overlay_enabled_store);
+static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
+ overlay_global_alpha_show, overlay_global_alpha_store);
+
+static struct attribute *overlay_sysfs_attrs[] = {
+ &overlay_attr_name.attr,
+ &overlay_attr_manager.attr,
+ &overlay_attr_input_size.attr,
+ &overlay_attr_screen_width.attr,
+ &overlay_attr_position.attr,
+ &overlay_attr_output_size.attr,
+ &overlay_attr_enabled.attr,
+ &overlay_attr_global_alpha.attr,
+ NULL
+};
+
+static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct omap_overlay *overlay;
+ struct overlay_attribute *overlay_attr;
+
+ overlay = container_of(kobj, struct omap_overlay, kobj);
+ overlay_attr = container_of(attr, struct overlay_attribute, attr);
+
+ if (!overlay_attr->show)
+ return -ENOENT;
+
+ return overlay_attr->show(overlay, buf);
+}
+
+static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t size)
+{
+ struct omap_overlay *overlay;
+ struct overlay_attribute *overlay_attr;
+
+ overlay = container_of(kobj, struct omap_overlay, kobj);
+ overlay_attr = container_of(attr, struct overlay_attribute, attr);
+
+ if (!overlay_attr->store)
+ return -ENOENT;
+
+ return overlay_attr->store(overlay, buf, size);
+}
+
+static struct sysfs_ops overlay_sysfs_ops = {
+ .show = overlay_attr_show,
+ .store = overlay_attr_store,
+};
+
+static struct kobj_type overlay_ktype = {
+ .sysfs_ops = &overlay_sysfs_ops,
+ .default_attrs = overlay_sysfs_attrs,
+};
+
+/* Check if overlay parameters are compatible with display */
+int dss_check_overlay(struct omap_overlay *ovl, struct omap_dss_device *dssdev)
+{
+ struct omap_overlay_info *info;
+ u16 outw, outh;
+ u16 dw, dh;
+
+ if (!dssdev)
+ return 0;
+
+ if (!ovl->info.enabled)
+ return 0;
+
+ info = &ovl->info;
+
+ if (info->paddr == 0) {
+ DSSDBG("check_overlay failed: paddr 0\n");
+ return -EINVAL;
+ }
+
+ dssdev->get_resolution(dssdev, &dw, &dh);
+
+ DSSDBG("check_overlay %d: (%d,%d %dx%d -> %dx%d) disp (%dx%d)\n",
+ ovl->id,
+ info->pos_x, info->pos_y,
+ info->width, info->height,
+ info->out_width, info->out_height,
+ dw, dh);
+
+ if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
+ outw = info->width;
+ outh = info->height;
+ } else {
+ if (info->out_width == 0)
+ outw = info->width;
+ else
+ outw = info->out_width;
+
+ if (info->out_height == 0)
+ outh = info->height;
+ else
+ outh = info->out_height;
+ }
+
+ if (dw < info->pos_x + outw) {
+ DSSDBG("check_overlay failed 1: %d < %d + %d\n",
+ dw, info->pos_x, outw);
+ return -EINVAL;
+ }
+
+ if (dh < info->pos_y + outh) {
+ DSSDBG("check_overlay failed 2: %d < %d + %d\n",
+ dh, info->pos_y, outh);
+ return -EINVAL;
+ }
+
+ if ((ovl->supported_modes & info->color_mode) == 0) {
+ DSSERR("overlay doesn't support mode %d\n", info->color_mode);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int dss_ovl_set_overlay_info(struct omap_overlay *ovl,
+ struct omap_overlay_info *info)
+{
+ int r;
+ struct omap_overlay_info old_info;
+
+ old_info = ovl->info;
+ ovl->info = *info;
+
+ if (ovl->manager) {
+ r = dss_check_overlay(ovl, ovl->manager->device);
+ if (r) {
+ ovl->info = old_info;
+ return r;
+ }
+ }
+
+ ovl->info_dirty = true;
+
+ return 0;
+}
+
+static void dss_ovl_get_overlay_info(struct omap_overlay *ovl,
+ struct omap_overlay_info *info)
+{
+ *info = ovl->info;
+}
+
+static int dss_ovl_wait_for_go(struct omap_overlay *ovl)
+{
+ return dss_mgr_wait_for_go_ovl(ovl);
+}
+
+static int omap_dss_set_manager(struct omap_overlay *ovl,
+ struct omap_overlay_manager *mgr)
+{
+ if (!mgr)
+ return -EINVAL;
+
+ if (ovl->manager) {
+ DSSERR("overlay '%s' already has a manager '%s'\n",
+ ovl->name, ovl->manager->name);
+ return -EINVAL;
+ }
+
+ if (ovl->info.enabled) {
+ DSSERR("overlay has to be disabled to change the manager\n");
+ return -EINVAL;
+ }
+
+ ovl->manager = mgr;
+
+ dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
+ /* XXX: on manual update display, in auto update mode, a bug happens
+ * here. When an overlay is first enabled on LCD, then it's disabled,
+ * and the manager is changed to TV, we sometimes get SYNC_LOST_DIGIT
+ * errors. Waiting before changing the channel_out fixes it. I'm
+ * guessing that the overlay is still somehow being used for the LCD,
+ * but I don't understand how or why. */
+ msleep(40);
+ dispc_set_channel_out(ovl->id, mgr->id);
+ dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
+
+ return 0;
+}
+
+static int omap_dss_unset_manager(struct omap_overlay *ovl)
+{
+ int r;
+
+ if (!ovl->manager) {
+ DSSERR("failed to detach overlay: manager not set\n");
+ return -EINVAL;
+ }
+
+ if (ovl->info.enabled) {
+ DSSERR("overlay has to be disabled to unset the manager\n");
+ return -EINVAL;
+ }
+
+ r = ovl->wait_for_go(ovl);
+ if (r)
+ return r;
+
+ ovl->manager = NULL;
+
+ return 0;
+}
+
+int omap_dss_get_num_overlays(void)
+{
+ return num_overlays;
+}
+EXPORT_SYMBOL(omap_dss_get_num_overlays);
+
+struct omap_overlay *omap_dss_get_overlay(int num)
+{
+ int i = 0;
+ struct omap_overlay *ovl;
+
+ list_for_each_entry(ovl, &overlay_list, list) {
+ if (i++ == num)
+ return ovl;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(omap_dss_get_overlay);
+
+static void omap_dss_add_overlay(struct omap_overlay *overlay)
+{
+ ++num_overlays;
+ list_add_tail(&overlay->list, &overlay_list);
+}
+
+static struct omap_overlay *dispc_overlays[3];
+
+void dss_overlay_setup_dispc_manager(struct omap_overlay_manager *mgr)
+{
+ mgr->num_overlays = 3;
+ mgr->overlays = dispc_overlays;
+}
+
+#ifdef L4_EXAMPLE
+static struct omap_overlay *l4_overlays[1];
+void dss_overlay_setup_l4_manager(struct omap_overlay_manager *mgr)
+{
+ mgr->num_overlays = 1;
+ mgr->overlays = l4_overlays;
+}
+#endif
+
+void dss_init_overlays(struct platform_device *pdev)
+{
+ int i, r;
+
+ INIT_LIST_HEAD(&overlay_list);
+
+ num_overlays = 0;
+
+ for (i = 0; i < 3; ++i) {
+ struct omap_overlay *ovl;
+ ovl = kzalloc(sizeof(*ovl), GFP_KERNEL);
+
+ BUG_ON(ovl == NULL);
+
+ switch (i) {
+ case 0:
+ ovl->name = "gfx";
+ ovl->id = OMAP_DSS_GFX;
+ ovl->supported_modes = OMAP_DSS_COLOR_GFX_OMAP3;
+ ovl->caps = OMAP_DSS_OVL_CAP_DISPC;
+ ovl->info.global_alpha = 255;
+ break;
+ case 1:
+ ovl->name = "vid1";
+ ovl->id = OMAP_DSS_VIDEO1;
+ ovl->supported_modes = OMAP_DSS_COLOR_VID_OMAP3;
+ ovl->caps = OMAP_DSS_OVL_CAP_SCALE |
+ OMAP_DSS_OVL_CAP_DISPC;
+ ovl->info.global_alpha = 255;
+ break;
+ case 2:
+ ovl->name = "vid2";
+ ovl->id = OMAP_DSS_VIDEO2;
+ ovl->supported_modes = OMAP_DSS_COLOR_VID_OMAP3;
+ ovl->caps = OMAP_DSS_OVL_CAP_SCALE |
+ OMAP_DSS_OVL_CAP_DISPC;
+ ovl->info.global_alpha = 255;
+ break;
+ }
+
+ ovl->set_manager = &omap_dss_set_manager;
+ ovl->unset_manager = &omap_dss_unset_manager;
+ ovl->set_overlay_info = &dss_ovl_set_overlay_info;
+ ovl->get_overlay_info = &dss_ovl_get_overlay_info;
+ ovl->wait_for_go = &dss_ovl_wait_for_go;
+
+ omap_dss_add_overlay(ovl);
+
+ r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
+ &pdev->dev.kobj, "overlay%d", i);
+
+ if (r) {
+ DSSERR("failed to create sysfs file\n");
+ continue;
+ }
+
+ dispc_overlays[i] = ovl;
+ }
+
+#ifdef L4_EXAMPLE
+ {
+ struct omap_overlay *ovl;
+ ovl = kzalloc(sizeof(*ovl), GFP_KERNEL);
+
+ BUG_ON(ovl == NULL);
+
+ ovl->name = "l4";
+ ovl->supported_modes = OMAP_DSS_COLOR_RGB24U;
+
+ ovl->set_manager = &omap_dss_set_manager;
+ ovl->unset_manager = &omap_dss_unset_manager;
+ ovl->set_overlay_info = &dss_ovl_set_overlay_info;
+ ovl->get_overlay_info = &dss_ovl_get_overlay_info;
+
+ omap_dss_add_overlay(ovl);
+
+ r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
+ &pdev->dev.kobj, "overlayl4");
+
+ if (r)
+ DSSERR("failed to create sysfs file\n");
+
+ l4_overlays[0] = ovl;
+ }
+#endif
+}
+
+/* connect overlays to the new device, if not already connected. if force
+ * selected, connect always. */
+void dss_recheck_connections(struct omap_dss_device *dssdev, bool force)
+{
+ int i;
+ struct omap_overlay_manager *lcd_mgr;
+ struct omap_overlay_manager *tv_mgr;
+ struct omap_overlay_manager *mgr = NULL;
+
+ lcd_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_LCD);
+ tv_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_TV);
+
+ if (dssdev->type != OMAP_DISPLAY_TYPE_VENC) {
+ if (!lcd_mgr->device || force) {
+ if (lcd_mgr->device)
+ lcd_mgr->unset_device(lcd_mgr);
+ lcd_mgr->set_device(lcd_mgr, dssdev);
+ mgr = lcd_mgr;
+ }
+ }
+
+ if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
+ if (!tv_mgr->device || force) {
+ if (tv_mgr->device)
+ tv_mgr->unset_device(tv_mgr);
+ tv_mgr->set_device(tv_mgr, dssdev);
+ mgr = tv_mgr;
+ }
+ }
+
+ if (mgr) {
+ for (i = 0; i < 3; i++) {
+ struct omap_overlay *ovl;
+ ovl = omap_dss_get_overlay(i);
+ if (!ovl->manager || force) {
+ if (ovl->manager)
+ omap_dss_unset_manager(ovl);
+ omap_dss_set_manager(ovl, mgr);
+ }
+ }
+ }
+}
+
+void dss_uninit_overlays(struct platform_device *pdev)
+{
+ struct omap_overlay *ovl;
+
+ while (!list_empty(&overlay_list)) {
+ ovl = list_first_entry(&overlay_list,
+ struct omap_overlay, list);
+ list_del(&ovl->list);
+ kobject_del(&ovl->kobj);
+ kobject_put(&ovl->kobj);
+ kfree(ovl);
+ }
+
+ num_overlays = 0;
+}
+
--
1.6.4
--
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