From 27cc213ea7dde929692df46a64c8d8ef74663e48 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Sat, 30 Apr 2011 16:55:12 +0300 Subject: OMAP: DSS2: OMAPFB: Implement auto-update mode Implement auto-update mode for manual-update displays. omapfb driver uses a delayed work to update the display with a constant rate. The update mode can be changed via OMAPFB_SET_UPDATE_MODE ioctl, which previously called omapdss but is now handled inside omapfb, and a new sysfs file, "update_mode". The update interval is by default 20 times per second, but can be changed via "auto_update_freq" module parameter. There is also a new module parameter "auto_update", which will make omapfb start manual update displays in auto-update mode. This auto-update mode can be used for testing if the userspace does not support manual update displays properly. However, it is a very inefficient solution, and should be considered more as a hack for testing than something that could be used as a long term solution. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/omapfb/omapfb-ioctl.c | 72 ++++++++-------- drivers/video/omap2/omapfb/omapfb-main.c | 139 +++++++++++++++++++++++++----- drivers/video/omap2/omapfb/omapfb-sysfs.c | 34 ++++++++ drivers/video/omap2/omapfb/omapfb.h | 13 +++ 4 files changed, 202 insertions(+), 56 deletions(-) diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c index cff4503..6b1ac23 100644 --- a/drivers/video/omap2/omapfb/omapfb-ioctl.c +++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c @@ -316,67 +316,67 @@ int omapfb_update_window(struct fb_info *fbi, } EXPORT_SYMBOL(omapfb_update_window); -static int omapfb_set_update_mode(struct fb_info *fbi, +int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode) { struct omap_dss_device *display = fb2display(fbi); - enum omap_dss_update_mode um; + struct omapfb_info *ofbi = FB2OFB(fbi); + struct omapfb2_device *fbdev = ofbi->fbdev; + struct omapfb_display_data *d; int r; - if (!display || !display->driver->set_update_mode) + if (!display) return -EINVAL; - switch (mode) { - case OMAPFB_UPDATE_DISABLED: - um = OMAP_DSS_UPDATE_DISABLED; - break; + if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE) + return -EINVAL; - case OMAPFB_AUTO_UPDATE: - um = OMAP_DSS_UPDATE_AUTO; - break; + omapfb_lock(fbdev); - case OMAPFB_MANUAL_UPDATE: - um = OMAP_DSS_UPDATE_MANUAL; - break; + d = get_display_data(fbdev, display); - default: - return -EINVAL; + if (d->update_mode == mode) { + omapfb_unlock(fbdev); + return 0; } - r = display->driver->set_update_mode(display, um); + r = 0; + + if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { + if (mode == OMAPFB_AUTO_UPDATE) + omapfb_start_auto_update(fbdev, display); + else /* MANUAL_UPDATE */ + omapfb_stop_auto_update(fbdev, display); + + d->update_mode = mode; + } else { /* AUTO_UPDATE */ + if (mode == OMAPFB_MANUAL_UPDATE) + r = -EINVAL; + } + + omapfb_unlock(fbdev); return r; } -static int omapfb_get_update_mode(struct fb_info *fbi, +int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode) { struct omap_dss_device *display = fb2display(fbi); - enum omap_dss_update_mode m; + struct omapfb_info *ofbi = FB2OFB(fbi); + struct omapfb2_device *fbdev = ofbi->fbdev; + struct omapfb_display_data *d; if (!display) return -EINVAL; - if (!display->driver->get_update_mode) { - *mode = OMAPFB_AUTO_UPDATE; - return 0; - } + omapfb_lock(fbdev); - m = display->driver->get_update_mode(display); + d = get_display_data(fbdev, display); - switch (m) { - case OMAP_DSS_UPDATE_DISABLED: - *mode = OMAPFB_UPDATE_DISABLED; - break; - case OMAP_DSS_UPDATE_AUTO: - *mode = OMAPFB_AUTO_UPDATE; - break; - case OMAP_DSS_UPDATE_MANUAL: - *mode = OMAPFB_MANUAL_UPDATE; - break; - default: - BUG(); - } + *mode = d->update_mode; + + omapfb_unlock(fbdev); return 0; } diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c index 44eb666..602b71a 100644 --- a/drivers/video/omap2/omapfb/omapfb-main.c +++ b/drivers/video/omap2/omapfb/omapfb-main.c @@ -46,6 +46,10 @@ static char *def_vram; static int def_vrfb; static int def_rotate; static int def_mirror; +static bool auto_update; +static unsigned int auto_update_freq; +module_param(auto_update, bool, 0); +module_param(auto_update_freq, uint, 0644); #ifdef DEBUG unsigned int omapfb_debug; @@ -1242,6 +1246,7 @@ static int omapfb_blank(int blank, struct fb_info *fbi) struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omap_dss_device *display = fb2display(fbi); + struct omapfb_display_data *d; int r = 0; if (!display) @@ -1249,6 +1254,8 @@ static int omapfb_blank(int blank, struct fb_info *fbi) omapfb_lock(fbdev); + d = get_display_data(fbdev, display); + switch (blank) { case FB_BLANK_UNBLANK: if (display->state != OMAP_DSS_DISPLAY_SUSPENDED) @@ -1257,6 +1264,11 @@ static int omapfb_blank(int blank, struct fb_info *fbi) if (display->driver->resume) r = display->driver->resume(display); + if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) && + d->update_mode == OMAPFB_AUTO_UPDATE && + !d->auto_update_work_enabled) + omapfb_start_auto_update(fbdev, display); + break; case FB_BLANK_NORMAL: @@ -1268,6 +1280,9 @@ static int omapfb_blank(int blank, struct fb_info *fbi) if (display->state != OMAP_DSS_DISPLAY_ACTIVE) goto exit; + if (d->auto_update_work_enabled) + omapfb_stop_auto_update(fbdev, display); + if (display->driver->suspend) r = display->driver->suspend(display); @@ -1724,6 +1739,78 @@ err: return r; } +static void omapfb_auto_update_work(struct work_struct *work) +{ + struct omap_dss_device *dssdev; + struct omap_dss_driver *dssdrv; + struct omapfb_display_data *d; + u16 w, h; + unsigned int freq; + struct omapfb2_device *fbdev; + + d = container_of(work, struct omapfb_display_data, + auto_update_work.work); + + dssdev = d->dssdev; + dssdrv = dssdev->driver; + fbdev = d->fbdev; + + if (!dssdrv || !dssdrv->update) + return; + + if (dssdrv->sync) + dssdrv->sync(dssdev); + + dssdrv->get_resolution(dssdev, &w, &h); + dssdrv->update(dssdev, 0, 0, w, h); + + freq = auto_update_freq; + if (freq == 0) + freq = 20; + queue_delayed_work(fbdev->auto_update_wq, + &d->auto_update_work, HZ / freq); +} + +void omapfb_start_auto_update(struct omapfb2_device *fbdev, + struct omap_dss_device *display) +{ + struct omapfb_display_data *d; + + if (fbdev->auto_update_wq == NULL) { + struct workqueue_struct *wq; + + wq = create_singlethread_workqueue("omapfb_auto_update"); + + if (wq == NULL) { + dev_err(fbdev->dev, "Failed to create workqueue for " + "auto-update\n"); + return; + } + + fbdev->auto_update_wq = wq; + } + + d = get_display_data(fbdev, display); + + INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work); + + d->auto_update_work_enabled = true; + + omapfb_auto_update_work(&d->auto_update_work.work); +} + +void omapfb_stop_auto_update(struct omapfb2_device *fbdev, + struct omap_dss_device *display) +{ + struct omapfb_display_data *d; + + d = get_display_data(fbdev, display); + + cancel_delayed_work_sync(&d->auto_update_work); + + d->auto_update_work_enabled = false; +} + /* initialize fb_info, var, fix to something sane based on the display */ static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi) { @@ -1859,12 +1946,22 @@ static void omapfb_free_resources(struct omapfb2_device *fbdev) for (i = 0; i < fbdev->num_displays; i++) { struct omap_dss_device *dssdev = fbdev->displays[i].dssdev; + + if (fbdev->displays[i].auto_update_work_enabled) + omapfb_stop_auto_update(fbdev, dssdev); + if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) dssdev->driver->disable(dssdev); omap_dss_put_device(dssdev); } + if (fbdev->auto_update_wq != NULL) { + flush_workqueue(fbdev->auto_update_wq); + destroy_workqueue(fbdev->auto_update_wq); + fbdev->auto_update_wq = NULL; + } + dev_set_drvdata(fbdev->dev, NULL); kfree(fbdev); } @@ -2183,6 +2280,7 @@ static int omapfb_init_display(struct omapfb2_device *fbdev, struct omap_dss_device *dssdev) { struct omap_dss_driver *dssdrv = dssdev->driver; + struct omapfb_display_data *d; int r; r = dssdrv->enable(dssdev); @@ -2192,8 +2290,20 @@ static int omapfb_init_display(struct omapfb2_device *fbdev, return r; } + d = get_display_data(fbdev, dssdev); + + d->fbdev = fbdev; + if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { u16 w, h; + + if (auto_update) { + omapfb_start_auto_update(fbdev, dssdev); + d->update_mode = OMAPFB_AUTO_UPDATE; + } else { + d->update_mode = OMAPFB_MANUAL_UPDATE; + } + if (dssdrv->enable_te) { r = dssdrv->enable_te(dssdev, 1); if (r) { @@ -2202,16 +2312,6 @@ static int omapfb_init_display(struct omapfb2_device *fbdev, } } - if (dssdrv->set_update_mode) { - r = dssdrv->set_update_mode(dssdev, - OMAP_DSS_UPDATE_MANUAL); - if (r) { - dev_err(fbdev->dev, - "Failed to set update mode\n"); - return r; - } - } - dssdrv->get_resolution(dssdev, &w, &h); r = dssdrv->update(dssdev, 0, 0, w, h); if (r) { @@ -2220,15 +2320,7 @@ static int omapfb_init_display(struct omapfb2_device *fbdev, return r; } } else { - if (dssdrv->set_update_mode) { - r = dssdrv->set_update_mode(dssdev, - OMAP_DSS_UPDATE_AUTO); - if (r) { - dev_err(fbdev->dev, - "Failed to set update mode\n"); - return r; - } - } + d->update_mode = OMAPFB_AUTO_UPDATE; } return 0; @@ -2276,6 +2368,8 @@ static int omapfb_probe(struct platform_device *pdev) fbdev->num_displays = 0; dssdev = NULL; for_each_dss_dev(dssdev) { + struct omapfb_display_data *d; + omap_dss_get_device(dssdev); if (!dssdev->driver) { @@ -2283,7 +2377,12 @@ static int omapfb_probe(struct platform_device *pdev) r = -ENODEV; } - fbdev->displays[fbdev->num_displays++].dssdev = dssdev; + d = &fbdev->displays[fbdev->num_displays++]; + d->dssdev = dssdev; + if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) + d->update_mode = OMAPFB_MANUAL_UPDATE; + else + d->update_mode = OMAPFB_AUTO_UPDATE; } if (r) diff --git a/drivers/video/omap2/omapfb/omapfb-sysfs.c b/drivers/video/omap2/omapfb/omapfb-sysfs.c index 2f5e817..153bf1a 100644 --- a/drivers/video/omap2/omapfb/omapfb-sysfs.c +++ b/drivers/video/omap2/omapfb/omapfb-sysfs.c @@ -518,6 +518,39 @@ static ssize_t show_virt(struct device *dev, return snprintf(buf, PAGE_SIZE, "%p\n", ofbi->region->vaddr); } +static ssize_t show_upd_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fb_info *fbi = dev_get_drvdata(dev); + enum omapfb_update_mode mode; + int r; + + r = omapfb_get_update_mode(fbi, &mode); + + if (r) + return r; + + return snprintf(buf, PAGE_SIZE, "%u\n", (unsigned)mode); +} + +static ssize_t store_upd_mode(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fb_info *fbi = dev_get_drvdata(dev); + unsigned mode; + int r; + + r = kstrtouint(buf, 0, &mode); + if (r) + return r; + + r = omapfb_set_update_mode(fbi, mode); + if (r) + return r; + + return count; +} + static struct device_attribute omapfb_attrs[] = { __ATTR(rotate_type, S_IRUGO | S_IWUSR, show_rotate_type, store_rotate_type), @@ -528,6 +561,7 @@ static struct device_attribute omapfb_attrs[] = { store_overlays_rotate), __ATTR(phys_addr, S_IRUGO, show_phys, NULL), __ATTR(virt_addr, S_IRUGO, show_virt, NULL), + __ATTR(update_mode, S_IRUGO | S_IWUSR, show_upd_mode, store_upd_mode), }; int omapfb_create_sysfs(struct omapfb2_device *fbdev) diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h index f07dbbb..fdf0ede 100644 --- a/drivers/video/omap2/omapfb/omapfb.h +++ b/drivers/video/omap2/omapfb/omapfb.h @@ -74,8 +74,12 @@ struct omapfb_info { }; struct omapfb_display_data { + struct omapfb2_device *fbdev; struct omap_dss_device *dssdev; u8 bpp_override; + enum omapfb_update_mode update_mode; + bool auto_update_work_enabled; + struct delayed_work auto_update_work; }; struct omapfb2_device { @@ -96,6 +100,8 @@ struct omapfb2_device { struct omap_overlay *overlays[10]; unsigned num_managers; struct omap_overlay_manager *managers[10]; + + struct workqueue_struct *auto_update_wq; }; struct omapfb_colormode { @@ -127,6 +133,13 @@ int dss_mode_to_fb_mode(enum omap_color_mode dssmode, int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl, u16 posx, u16 posy, u16 outw, u16 outh); +void omapfb_start_auto_update(struct omapfb2_device *fbdev, + struct omap_dss_device *display); +void omapfb_stop_auto_update(struct omapfb2_device *fbdev, + struct omap_dss_device *display); +int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode); +int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode); + /* find the display connected to this fb, if any */ static inline struct omap_dss_device *fb2display(struct fb_info *fbi) { -- cgit v1.1