diff options
| -rw-r--r-- | drivers/staging/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/Makefile | 1 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/Kconfig | 25 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/Makefile | 12 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/TODO | 32 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_connector.c | 371 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_crtc.c | 327 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_drm.h | 123 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_drv.c | 810 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_drv.h | 124 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_encoder.c | 172 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_fb.c | 261 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_fbdev.c | 304 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_gem.c | 774 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_gem_helpers.c | 114 | ||||
| -rw-r--r-- | drivers/staging/omapdrm/omap_priv.h | 42 | ||||
| -rw-r--r-- | drivers/video/omap2/omapfb/Kconfig | 2 |
17 files changed, 3495 insertions, 1 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 0f1e5ca..985937a 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -130,4 +130,6 @@ source "drivers/staging/nvec/Kconfig" source "drivers/staging/media/Kconfig" +source "drivers/staging/omapdrm/Kconfig" + endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 6f886bd..ba3fb8d 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -56,3 +56,4 @@ obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4) += ste_rmi4/ obj-$(CONFIG_DRM_PSB) += gma500/ obj-$(CONFIG_INTEL_MEI) += mei/ obj-$(CONFIG_MFD_NVEC) += nvec/ +obj-$(CONFIG_DRM_OMAP) += omapdrm/ diff --git a/drivers/staging/omapdrm/Kconfig b/drivers/staging/omapdrm/Kconfig new file mode 100644 index 0000000..81a7cba --- /dev/null +++ b/drivers/staging/omapdrm/Kconfig @@ -0,0 +1,25 @@ + +config DRM_OMAP + tristate "OMAP DRM" + depends on DRM && !CONFIG_FB_OMAP2 + depends on ARCH_OMAP2PLUS + select DRM_KMS_HELPER + select OMAP2_DSS + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select FB_SYS_FOPS + default n + help + DRM display driver for OMAP2/3/4 based boards. + +config DRM_OMAP_NUM_CRTCS + int "Number of CRTCs" + range 1 10 + default 1 if ARCH_OMAP2 || ARCH_OMAP3 + default 2 if ARCH_OMAP4 + depends on DRM_OMAP + help + Select the number of video overlays which can be used as framebuffers. + The remaining overlays are reserved for video. + diff --git a/drivers/staging/omapdrm/Makefile b/drivers/staging/omapdrm/Makefile new file mode 100644 index 0000000..4aa9a2f --- /dev/null +++ b/drivers/staging/omapdrm/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for the drm device driver. This driver provides support for the +# Direct Rendering Infrastructure (DRI) +# + +ccflags-y := -Iinclude/drm -Werror +omapdrm-y := omap_drv.o omap_crtc.o omap_encoder.o omap_connector.o omap_fb.o omap_fbdev.o omap_gem.o + +# temporary: +omapdrm-y += omap_gem_helpers.o + +obj-$(CONFIG_DRM_OMAP) += omapdrm.o diff --git a/drivers/staging/omapdrm/TODO b/drivers/staging/omapdrm/TODO new file mode 100644 index 0000000..17781c9 --- /dev/null +++ b/drivers/staging/omapdrm/TODO @@ -0,0 +1,32 @@ +TODO +. check error handling/cleanup paths +. add drm_plane / overlay support +. add video decode/encode support (via syslink3 + codec-engine) +. still some rough edges with flipping.. event back to userspace should + really come after VSYNC interrupt +. where should we do eviction (detatch_pages())? We aren't necessarily + accessing the pages via a GART, so maybe we need some other threshold + to put a cap on the # of pages that can be pin'd. (It is mostly only + of interest in case you have a swap partition/file.. which a lot of + these devices do not.. but it doesn't hurt for the driver to do the + right thing anyways.) + . Use mm_shrinker to trigger unpinning pages. Need to figure out how + to handle next issue first (I think?) + . Note TTM already has some mm_shrinker stuff.. maybe an argument to + move to TTM? Or maybe something that could be factored out in common? +. GEM/shmem backed pages can have existing mappings (kernel linear map, + etc..), which isn't really ideal. +. Revisit GEM sync object infrastructure.. TTM has some framework for this + already. Possibly this could be refactored out and made more common? + There should be some way to do this with less wheel-reinvention. +. Review DSS vs KMS mismatches. The omap_dss_device is sort of part encoder, + part connector. Which results in a bit of duct tape to fwd calls from + encoder to connector. Possibly this could be done a bit better. + +Userspace: +. git://github.com/robclark/xf86-video-omap.git + +Currently tested on +. OMAP3530 beagleboard +. OMAP4430 pandaboard +. OMAP4460 pandaboard diff --git a/drivers/staging/omapdrm/omap_connector.c b/drivers/staging/omapdrm/omap_connector.c new file mode 100644 index 0000000..5e2856c --- /dev/null +++ b/drivers/staging/omapdrm/omap_connector.c @@ -0,0 +1,371 @@ +/* + * drivers/staging/omapdrm/omap_connector.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_crtc.h" +#include "drm_crtc_helper.h" + +/* + * connector funcs + */ + +#define to_omap_connector(x) container_of(x, struct omap_connector, base) + +struct omap_connector { + struct drm_connector base; + struct omap_dss_device *dssdev; +}; + +static inline void copy_timings_omap_to_drm(struct drm_display_mode *mode, + struct omap_video_timings *timings) +{ + mode->clock = timings->pixel_clock; + + mode->hdisplay = timings->x_res; + mode->hsync_start = mode->hdisplay + timings->hfp; + mode->hsync_end = mode->hsync_start + timings->hsw; + mode->htotal = mode->hsync_end + timings->hbp; + + mode->vdisplay = timings->y_res; + mode->vsync_start = mode->vdisplay + timings->vfp; + mode->vsync_end = mode->vsync_start + timings->vsw; + mode->vtotal = mode->vsync_end + timings->vbp; + + /* note: whether or not it is interlaced, +/- h/vsync, etc, + * which should be set in the mode flags, is not exposed in + * the omap_video_timings struct.. but hdmi driver tracks + * those separately so all we have to have to set the mode + * is the way to recover these timings values, and the + * omap_dss_driver would do the rest. + */ +} + +static inline void copy_timings_drm_to_omap(struct omap_video_timings *timings, + struct drm_display_mode *mode) +{ + timings->pixel_clock = mode->clock; + + timings->x_res = mode->hdisplay; + timings->hfp = mode->hsync_start - mode->hdisplay; + timings->hsw = mode->hsync_end - mode->hsync_start; + timings->hbp = mode->htotal - mode->hsync_end; + + timings->y_res = mode->vdisplay; + timings->vfp = mode->vsync_start - mode->vdisplay; + timings->vsw = mode->vsync_end - mode->vsync_start; + timings->vbp = mode->vtotal - mode->vsync_end; +} + +static void omap_connector_dpms(struct drm_connector *connector, int mode) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + int old_dpms; + + DBG("%s: %d", dssdev->name, mode); + + old_dpms = connector->dpms; + + /* from off to on, do from crtc to connector */ + if (mode < old_dpms) + drm_helper_connector_dpms(connector, mode); + + if (mode == DRM_MODE_DPMS_ON) { + /* store resume info for suspended displays */ + switch (dssdev->state) { + case OMAP_DSS_DISPLAY_SUSPENDED: + dssdev->activate_after_resume = true; + break; + case OMAP_DSS_DISPLAY_DISABLED: { + int ret = dssdev->driver->enable(dssdev); + if (ret) { + DBG("%s: failed to enable: %d", + dssdev->name, ret); + dssdev->driver->disable(dssdev); + } + break; + } + default: + break; + } + } else { + /* TODO */ + } + + /* from on to off, do from connector to crtc */ + if (mode > old_dpms) + drm_helper_connector_dpms(connector, mode); +} + +enum drm_connector_status omap_connector_detect( + struct drm_connector *connector, bool force) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + struct omap_dss_driver *dssdrv = dssdev->driver; + enum drm_connector_status ret; + + if (dssdrv->detect) { + if (dssdrv->detect(dssdev)) { + ret = connector_status_connected; + } else { + ret = connector_status_disconnected; + } + } else { + ret = connector_status_unknown; + } + + VERB("%s: %d (force=%d)", omap_connector->dssdev->name, ret, force); + + return ret; +} + +static void omap_connector_destroy(struct drm_connector *connector) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + + dssdev->driver->disable(dssdev); + + DBG("%s", omap_connector->dssdev->name); + drm_sysfs_connector_remove(connector); + drm_connector_cleanup(connector); + kfree(omap_connector); + + omap_dss_put_device(dssdev); +} + +#define MAX_EDID 512 + +static int omap_connector_get_modes(struct drm_connector *connector) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + struct omap_dss_driver *dssdrv = dssdev->driver; + struct drm_device *dev = connector->dev; + int n = 0; + + DBG("%s", omap_connector->dssdev->name); + + /* if display exposes EDID, then we parse that in the normal way to + * build table of supported modes.. otherwise (ie. fixed resolution + * LCD panels) we just return a single mode corresponding to the + * currently configured timings: + */ + if (dssdrv->read_edid) { + void *edid = kzalloc(MAX_EDID, GFP_KERNEL); + + if ((dssdrv->read_edid(dssdev, edid, MAX_EDID) > 0) && + drm_edid_is_valid(edid)) { + drm_mode_connector_update_edid_property( + connector, edid); + n = drm_add_edid_modes(connector, edid); + kfree(connector->display_info.raw_edid); + connector->display_info.raw_edid = edid; + } else { + drm_mode_connector_update_edid_property( + connector, NULL); + connector->display_info.raw_edid = NULL; + kfree(edid); + } + } else { + struct drm_display_mode *mode = drm_mode_create(dev); + struct omap_video_timings timings; + + dssdrv->get_timings(dssdev, &timings); + + copy_timings_omap_to_drm(mode, &timings); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + + n = 1; + } + + return n; +} + +static int omap_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + struct omap_dss_driver *dssdrv = dssdev->driver; + struct omap_video_timings timings = {0}; + struct drm_device *dev = connector->dev; + struct drm_display_mode *new_mode; + int ret = MODE_BAD; + + copy_timings_drm_to_omap(&timings, mode); + mode->vrefresh = drm_mode_vrefresh(mode); + + if (!dssdrv->check_timings(dssdev, &timings)) { + /* check if vrefresh is still valid */ + new_mode = drm_mode_duplicate(dev, mode); + new_mode->clock = timings.pixel_clock; + new_mode->vrefresh = 0; + if (mode->vrefresh == drm_mode_vrefresh(new_mode)) + ret = MODE_OK; + drm_mode_destroy(dev, new_mode); + } + + DBG("connector: mode %s: " + "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", + (ret == MODE_OK) ? "valid" : "invalid", + mode->base.id, mode->name, mode->vrefresh, mode->clock, + mode->hdisplay, mode->hsync_start, + mode->hsync_end, mode->htotal, + mode->vdisplay, mode->vsync_start, + mode->vsync_end, mode->vtotal, mode->type, mode->flags); + + return ret; +} + +struct drm_encoder *omap_connector_attached_encoder( + struct drm_connector *connector) +{ + int i; + struct omap_connector *omap_connector = to_omap_connector(connector); + + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + struct drm_mode_object *obj; + + if (connector->encoder_ids[i] == 0) + break; + + obj = drm_mode_object_find(connector->dev, + connector->encoder_ids[i], + DRM_MODE_OBJECT_ENCODER); + + if (obj) { + struct drm_encoder *encoder = obj_to_encoder(obj); + struct omap_overlay_manager *mgr = + omap_encoder_get_manager(encoder); + DBG("%s: found %s", omap_connector->dssdev->name, + mgr->name); + return encoder; + } + } + + DBG("%s: no encoder", omap_connector->dssdev->name); + + return NULL; +} + +static const struct drm_connector_funcs omap_connector_funcs = { + .dpms = omap_connector_dpms, + .detect = omap_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = omap_connector_destroy, +}; + +static const struct drm_connector_helper_funcs omap_connector_helper_funcs = { + .get_modes = omap_connector_get_modes, + .mode_valid = omap_connector_mode_valid, + .best_encoder = omap_connector_attached_encoder, +}; + +/* called from encoder when mode is set, to propagate settings to the dssdev */ +void omap_connector_mode_set(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct drm_device *dev = connector->dev; + struct omap_connector *omap_connector = to_omap_connector(connector); + struct omap_dss_device *dssdev = omap_connector->dssdev; + struct omap_dss_driver *dssdrv = dssdev->driver; + struct omap_video_timings timings; + + copy_timings_drm_to_omap(&timings, mode); + + DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", + omap_connector->dssdev->name, + mode->base.id, mode->name, mode->vrefresh, mode->clock, + mode->hdisplay, mode->hsync_start, + mode->hsync_end, mode->htotal, + mode->vdisplay, mode->vsync_start, + mode->vsync_end, mode->vtotal, mode->type, mode->flags); + + if (dssdrv->check_timings(dssdev, &timings)) { + dev_err(dev->dev, "could not set timings\n"); + return; + } + + dssdrv->set_timings(dssdev, &timings); +} + +/* flush an area of the framebuffer (in case of manual update display that + * is not automatically flushed) + */ +void omap_connector_flush(struct drm_connector *connector, + int x, int y, int w, int h) +{ + struct omap_connector *omap_connector = to_omap_connector(connector); + + /* TODO: enable when supported in dss */ + VERB("%s: %d,%d, %dx%d", omap_connector->dssdev->name, x, y, w, h); +} + +/* initialize connector */ +struct drm_connector *omap_connector_init(struct drm_device *dev, + int connector_type, struct omap_dss_device *dssdev) +{ + struct drm_connector *connector = NULL; + struct omap_connector *omap_connector; + + DBG("%s", dssdev->name); + + omap_dss_get_device(dssdev); + + omap_connector = kzalloc(sizeof(struct omap_connector), GFP_KERNEL); + if (!omap_connector) { + dev_err(dev->dev, "could not allocate connector\n"); + goto fail; + } + + omap_connector->dssdev = dssdev; + connector = &omap_connector->base; + + drm_connector_init(dev, connector, &omap_connector_funcs, + connector_type); + drm_connector_helper_add(connector, &omap_connector_helper_funcs); + +#if 0 /* enable when dss2 supports hotplug */ + if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_HPD) + connector->polled = 0; + else +#endif + connector->polled = DRM_CONNECTOR_POLL_CONNECT | + DRM_CONNECTOR_POLL_DISCONNECT; + + connector->interlace_allowed = 1; + connector->doublescan_allowed = 0; + + drm_sysfs_connector_add(connector); + + return connector; + +fail: + if (connector) { + omap_connector_destroy(connector); + } + + return NULL; +} diff --git a/drivers/staging/omapdrm/omap_crtc.c b/drivers/staging/omapdrm/omap_crtc.c new file mode 100644 index 0000000..fd09bcf --- /dev/null +++ b/drivers/staging/omapdrm/omap_crtc.c @@ -0,0 +1,327 @@ +/* + * drivers/staging/omapdrm/omap_crtc.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_mode.h" +#include "drm_crtc.h" +#include "drm_crtc_helper.h" + +#define to_omap_crtc(x) container_of(x, struct omap_crtc, base) + +struct omap_crtc { + struct drm_crtc base; + struct omap_overlay *ovl; + struct omap_overlay_info info; + int id; + + /* if there is a pending flip, this will be non-null: */ + struct drm_pending_vblank_event *event; +}; + +/* push changes down to dss2 */ +static int commit(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_overlay *ovl = omap_crtc->ovl; + struct omap_overlay_info *info = &omap_crtc->info; + int ret; + + DBG("%s", omap_crtc->ovl->name); + DBG("%dx%d -> %dx%d (%d)", info->width, info->height, info->out_width, + info->out_height, info->screen_width); + DBG("%d,%d %08x", info->pos_x, info->pos_y, info->paddr); + + /* NOTE: do we want to do this at all here, or just wait + * for dpms(ON) since other CRTC's may not have their mode + * set yet, so fb dimensions may still change.. + */ + ret = ovl->set_overlay_info(ovl, info); + if (ret) { + dev_err(dev->dev, "could not set overlay info\n"); + return ret; + } + + /* our encoder doesn't necessarily get a commit() after this, in + * particular in the dpms() and mode_set_base() cases, so force the + * manager to update: + * + * could this be in the encoder somehow? + */ + if (ovl->manager) { + ret = ovl->manager->apply(ovl->manager); + if (ret) { + dev_err(dev->dev, "could not apply settings\n"); + return ret; + } + } + + if (info->enabled) { + omap_framebuffer_flush(crtc->fb, crtc->x, crtc->y, + crtc->fb->width, crtc->fb->height); + } + + return 0; +} + +/* update parameters that are dependent on the framebuffer dimensions and + * position within the fb that this crtc scans out from. This is called + * when framebuffer dimensions or x,y base may have changed, either due + * to our mode, or a change in another crtc that is scanning out of the + * same fb. + */ +static void update_scanout(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + dma_addr_t paddr; + unsigned int screen_width; + + omap_framebuffer_get_buffer(crtc->fb, crtc->x, crtc->y, + NULL, &paddr, &screen_width); + + DBG("%s: %d,%d: %08x (%d)", omap_crtc->ovl->name, + crtc->x, crtc->y, (u32)paddr, screen_width); + + omap_crtc->info.paddr = paddr; + omap_crtc->info.screen_width = screen_width; +} + +static void omap_crtc_gamma_set(struct drm_crtc *crtc, + u16 *red, u16 *green, u16 *blue, uint32_t start, uint32_t size) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + DBG("%s", omap_crtc->ovl->name); +} + +static void omap_crtc_destroy(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + DBG("%s", omap_crtc->ovl->name); + drm_crtc_cleanup(crtc); + kfree(omap_crtc); +} + +static void omap_crtc_dpms(struct drm_crtc *crtc, int mode) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + + DBG("%s: %d", omap_crtc->ovl->name, mode); + + if (mode == DRM_MODE_DPMS_ON) { + update_scanout(crtc); + omap_crtc->info.enabled = true; + } else { + omap_crtc->info.enabled = false; + } + + WARN_ON(commit(crtc)); +} + +static bool omap_crtc_mode_fixup(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + DBG("%s", omap_crtc->ovl->name); + return true; +} + +static int omap_crtc_mode_set(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, + int x, int y, + struct drm_framebuffer *old_fb) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + + DBG("%s: %d,%d: %dx%d", omap_crtc->ovl->name, x, y, + mode->hdisplay, mode->vdisplay); + + /* just use adjusted mode */ + mode = adjusted_mode; + + omap_crtc->info.width = mode->hdisplay; + omap_crtc->info.height = mode->vdisplay; + omap_crtc->info.out_width = mode->hdisplay; + omap_crtc->info.out_height = mode->vdisplay; + omap_crtc->info.color_mode = OMAP_DSS_COLOR_RGB24U; + omap_crtc->info.rotation_type = OMAP_DSS_ROT_DMA; + omap_crtc->info.rotation = OMAP_DSS_ROT_0; + omap_crtc->info.global_alpha = 0xff; + omap_crtc->info.mirror = 0; + omap_crtc->info.mirror = 0; + omap_crtc->info.pos_x = 0; + omap_crtc->info.pos_y = 0; +#if 0 /* re-enable when these are available in DSS2 driver */ + omap_crtc->info.zorder = 3; /* GUI in the front, video behind */ + omap_crtc->info.min_x_decim = 1; + omap_crtc->info.max_x_decim = 1; + omap_crtc->info.min_y_decim = 1; + omap_crtc->info.max_y_decim = 1; +#endif + + update_scanout(crtc); + + return 0; +} + +static void omap_crtc_prepare(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_overlay *ovl = omap_crtc->ovl; + + DBG("%s", omap_crtc->ovl->name); + + ovl->get_overlay_info(ovl, &omap_crtc->info); + + omap_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); +} + +static void omap_crtc_commit(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + DBG("%s", omap_crtc->ovl->name); + omap_crtc_dpms(crtc, DRM_MODE_DPMS_ON); +} + +static int omap_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + + DBG("%s %d,%d: fb=%p", omap_crtc->ovl->name, x, y, old_fb); + + update_scanout(crtc); + + return commit(crtc); +} + +static void omap_crtc_load_lut(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + DBG("%s", omap_crtc->ovl->name); +} + +static void page_flip_cb(void *arg) +{ + struct drm_crtc *crtc = arg; + struct drm_device *dev = crtc->dev; + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct drm_pending_vblank_event *event = omap_crtc->event; + struct timeval now; + unsigned long flags; + + WARN_ON(!event); + + omap_crtc->event = NULL; + + update_scanout(crtc); + WARN_ON(commit(crtc)); + + /* wakeup userspace */ + /* TODO: this should happen *after* flip in vsync IRQ handler */ + if (event) { + spin_lock_irqsave(&dev->event_lock, flags); + event->event.sequence = drm_vblank_count_and_time( + dev, omap_crtc->id, &now); + event->event.tv_sec = now.tv_sec; + event->event.tv_usec = now.tv_usec; + list_add_tail(&event->base.link, + &event->base.file_priv->event_list); + wake_up_interruptible(&event->base.file_priv->event_wait); + spin_unlock_irqrestore(&dev->event_lock, flags); + } +} + +static int omap_crtc_page_flip_locked(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event) +{ + struct drm_device *dev = crtc->dev; + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + + DBG("%d -> %d", crtc->fb ? crtc->fb->base.id : -1, fb->base.id); + + if (omap_crtc->event) { + dev_err(dev->dev, "already a pending flip\n"); + return -EINVAL; + } + + crtc->fb = fb; + omap_crtc->event = event; + + omap_gem_op_async(omap_framebuffer_bo(fb), OMAP_GEM_READ, + page_flip_cb, crtc); + + return 0; +} + +static const struct drm_crtc_funcs omap_crtc_funcs = { + .gamma_set = omap_crtc_gamma_set, + .set_config = drm_crtc_helper_set_config, + .destroy = omap_crtc_destroy, + .page_flip = omap_crtc_page_flip_locked, +}; + +static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs = { + .dpms = omap_crtc_dpms, + .mode_fixup = omap_crtc_mode_fixup, + .mode_set = omap_crtc_mode_set, + .prepare = omap_crtc_prepare, + .commit = omap_crtc_commit, + .mode_set_base = omap_crtc_mode_set_base, + .load_lut = omap_crtc_load_lut, +}; + +struct omap_overlay *omap_crtc_get_overlay(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + return omap_crtc->ovl; +} + +/* initialize crtc */ +struct drm_crtc *omap_crtc_init(struct drm_device *dev, + struct omap_overlay *ovl, int id) +{ + struct drm_crtc *crtc = NULL; + struct omap_crtc *omap_crtc = kzalloc(sizeof(*omap_crtc), GFP_KERNEL); + + DBG("%s", ovl->name); + + if (!omap_crtc) { + dev_err(dev->dev, "could not allocate CRTC\n"); + goto fail; + } + + omap_crtc->ovl = ovl; + omap_crtc->id = id; + crtc = &omap_crtc->base; + drm_crtc_init(dev, crtc, &omap_crtc_funcs); + drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs); + + return crtc; + +fail: + if (crtc) { + drm_crtc_cleanup(crtc); + kfree(omap_crtc); + } + return NULL; +} diff --git a/drivers/staging/omapdrm/omap_drm.h b/drivers/staging/omapdrm/omap_drm.h new file mode 100644 index 0000000..40167dd --- /dev/null +++ b/drivers/staging/omapdrm/omap_drm.h @@ -0,0 +1,123 @@ +/* + * include/drm/omap_drm.h + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __OMAP_DRM_H__ +#define __OMAP_DRM_H__ + +#include "drm.h" + +/* Please note that modifications to all structs defined here are + * subject to backwards-compatibility constraints. + */ + +#define OMAP_PARAM_CHIPSET_ID 1 /* ie. 0x3430, 0x4430, etc */ + +struct drm_omap_param { + uint64_t param; /* in */ + uint64_t value; /* in (set_param), out (get_param) */ +}; + +#define OMAP_BO_SCANOUT 0x00000001 /* scanout capable (phys contiguous) */ +#define OMAP_BO_CACHE_MASK 0x00000006 /* cache type mask, see cache modes */ +#define OMAP_BO_TILED_MASK 0x00000f00 /* tiled mapping mask, see tiled modes */ + +/* cache modes */ +#define OMAP_BO_CACHED 0x00000000 /* default */ +#define OMAP_BO_WC 0x00000002 /* write-combine */ +#define OMAP_BO_UNCACHED 0x00000004 /* strongly-ordered (uncached) */ + +/* tiled modes */ +#define OMAP_BO_TILED_8 0x00000100 +#define OMAP_BO_TILED_16 0x00000200 +#define OMAP_BO_TILED_32 0x00000300 +#define OMAP_BO_TILED (OMAP_BO_TILED_8 | OMAP_BO_TILED_16 | OMAP_BO_TILED_32) + +union omap_gem_size { + uint32_t bytes; /* (for non-tiled formats) */ + struct { + uint16_t width; + uint16_t height; + } tiled; /* (for tiled formats) */ +}; + +struct drm_omap_gem_new { + union omap_gem_size size; /* in */ + uint32_t flags; /* in */ + uint32_t handle; /* out */ + uint32_t __pad; +}; + +/* mask of operations: */ +enum omap_gem_op { + OMAP_GEM_READ = 0x01, + OMAP_GEM_WRITE = 0x02, +}; + +struct drm_omap_gem_cpu_prep { + uint32_t handle; /* buffer handle (in) */ + uint32_t op; /* mask of omap_gem_op (in) */ +}; + +struct drm_omap_gem_cpu_fini { + uint32_t handle; /* buffer handle (in) */ + uint32_t op; /* mask of omap_gem_op (in) */ + /* TODO maybe here we pass down info about what regions are touched + * by sw so we can be clever about cache ops? For now a placeholder, + * set to zero and we just do full buffer flush.. + */ + uint32_t nregions; + uint32_t __pad; +}; + +struct drm_omap_gem_info { + uint32_t handle; /* buffer handle (in) */ + uint32_t pad; + uint64_t offset; /* mmap offset (out) */ + /* note: in case of tiled buffers, the user virtual size can be + * different from the physical size (ie. how many pages are needed + * to back the object) which is returned in DRM_IOCTL_GEM_OPEN.. + * This size here is the one that should be used if you want to + * mmap() the buffer: + */ + uint32_t size; /* virtual size for mmap'ing (out) */ + uint32_t __pad; +}; + +#define DRM_OMAP_GET_PARAM 0x00 +#define DRM_OMAP_SET_PARAM 0x01 +/* placeholder for plugin-api +#define DRM_OMAP_GET_BASE 0x02 +*/ +#define DRM_OMAP_GEM_NEW 0x03 +#define DRM_OMAP_GEM_CPU_PREP 0x04 +#define DRM_OMAP_GEM_CPU_FINI 0x05 +#define DRM_OMAP_GEM_INFO 0x06 +#define DRM_OMAP_NUM_IOCTLS 0x07 + +#define DRM_IOCTL_OMAP_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GET_PARAM, struct drm_omap_param) +#define DRM_IOCTL_OMAP_SET_PARAM DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_SET_PARAM, struct drm_omap_param) +/* placeholder for plugin-api +#define DRM_IOCTL_OMAP_GET_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GET_BASE, struct drm_omap_get_base) +*/ +#define DRM_IOCTL_OMAP_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GEM_NEW, struct drm_omap_gem_new) +#define DRM_IOCTL_OMAP_GEM_CPU_PREP DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_GEM_CPU_PREP, struct drm_omap_gem_cpu_prep) +#define DRM_IOCTL_OMAP_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_GEM_CPU_FINI, struct drm_omap_gem_cpu_fini) +#define DRM_IOCTL_OMAP_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GEM_INFO, struct drm_omap_gem_info) + +#endif /* __OMAP_DRM_H__ */ diff --git a/drivers/staging/omapdrm/omap_drv.c b/drivers/staging/omapdrm/omap_drv.c new file mode 100644 index 0000000..cee0050 --- /dev/null +++ b/drivers/staging/omapdrm/omap_drv.c @@ -0,0 +1,810 @@ +/* + * drivers/staging/omapdrm/omap_drv.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_crtc_helper.h" +#include "drm_fb_helper.h" + +#define DRIVER_NAME MODULE_NAME +#define DRIVER_DESC "OMAP DRM" +#define DRIVER_DATE "20110917" +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 +#define DRIVER_PATCHLEVEL 0 + +struct drm_device *drm_device; + +static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS; + +MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs"); +module_param(num_crtc, int, 0600); + +/* + * mode config funcs + */ + +/* Notes about mapping DSS and DRM entities: + * CRTC: overlay + * encoder: manager.. with some extension to allow one primary CRTC + * and zero or more video CRTC's to be mapped to one encoder? + * connector: dssdev.. manager can be attached/detached from different + * devices + */ + +static void omap_fb_output_poll_changed(struct drm_device *dev) +{ + struct omap_drm_private *priv = dev->dev_private; + DBG("dev=%p", dev); + if (priv->fbdev) { + drm_fb_helper_hotplug_event(priv->fbdev); + } +} + +static struct drm_mode_config_funcs omap_mode_config_funcs = { + .fb_create = omap_framebuffer_create, + .output_poll_changed = omap_fb_output_poll_changed, +}; + +static int get_connector_type(struct omap_dss_device *dssdev) +{ + switch (dssdev->type) { + case OMAP_DISPLAY_TYPE_HDMI: + return DRM_MODE_CONNECTOR_HDMIA; + case OMAP_DISPLAY_TYPE_DPI: + if (!strcmp(dssdev->name, "dvi")) + return DRM_MODE_CONNECTOR_DVID; + /* fallthrough */ + default: + return DRM_MODE_CONNECTOR_Unknown; + } +} + +#if 0 /* enable when dss2 supports hotplug */ +static int omap_drm_notifier(struct notifier_block *nb, + unsigned long evt, void *arg) +{ + switch (evt) { + case OMAP_DSS_SIZE_CHANGE: + case OMAP_DSS_HOTPLUG_CONNECT: + case OMAP_DSS_HOTPLUG_DISCONNECT: { + struct drm_device *dev = drm_device; + DBG("hotplug event: evt=%d, dev=%p", evt, dev); + if (dev) { + drm_sysfs_hotplug_event(dev); + } + return NOTIFY_OK; + } + default: /* don't care about other events for now */ + return NOTIFY_DONE; + } +} +#endif + +static void dump_video_chains(void) +{ + int i; + + DBG("dumping video chains: "); + for (i = 0; i < omap_dss_get_num_overlays(); i++) { + struct omap_overlay *ovl = omap_dss_get_overlay(i); + struct omap_overlay_manager *mgr = ovl->manager; + struct omap_dss_device *dssdev = mgr ? mgr->device : NULL; + if (dssdev) { + DBG("%d: %s -> %s -> %s", i, ovl->name, mgr->name, + dssdev->name); + } else if (mgr) { + DBG("%d: %s -> %s", i, ovl->name, mgr->name); + } else { + DBG("%d: %s", i, ovl->name); + } + } +} + +/* create encoders for each manager */ +static int create_encoder(struct drm_device *dev, + struct omap_overlay_manager *mgr) +{ + struct omap_drm_private *priv = dev->dev_private; + struct drm_encoder *encoder = omap_encoder_init(dev, mgr); + + if (!encoder) { + dev_err(dev->dev, "could not create encoder: %s\n", + mgr->name); + return -ENOMEM; + } + + BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders)); + + priv->encoders[priv->num_encoders++] = encoder; + + return 0; +} + +/* create connectors for each display device */ +static int create_connector(struct drm_device *dev, + struct omap_dss_device *dssdev) +{ + struct omap_drm_private *priv = dev->dev_private; + static struct notifier_block *notifier; + struct drm_connector *connector; + int j; + + if (!dssdev->driver) { + dev_warn(dev->dev, "%s has no driver.. skipping it\n", + dssdev->name); + return 0; + } + + if (!(dssdev->driver->get_timings || + dssdev->driver->read_edid)) { + dev_warn(dev->dev, "%s driver does not support " + "get_timings or read_edid.. skipping it!\n", + dssdev->name); + return 0; + } + + connector = omap_connector_init(dev, + get_connector_type(dssdev), dssdev); + + if (!connector) { + dev_err(dev->dev, "could not create connector: %s\n", + dssdev->name); + return -ENOMEM; + } + + BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors)); + + priv->connectors[priv->num_connectors++] = connector; + +#if 0 /* enable when dss2 supports hotplug */ + notifier = kzalloc(sizeof(struct notifier_block), GFP_KERNEL); + notifier->notifier_call = omap_drm_notifier; + omap_dss_add_notify(dssdev, notifier); +#else + notifier = NULL; +#endif + + for (j = 0; j < priv->num_encoders; j++) { + struct omap_overlay_manager *mgr = + omap_encoder_get_manager(priv->encoders[j]); + if (mgr->device == dssdev) { + drm_mode_connector_attach_encoder(connector, + priv->encoders[j]); + } + } + + return 0; +} + +/* create up to max_overlays CRTCs mapping to overlays.. by default, + * connect the overlays to different managers/encoders, giving priority + * to encoders connected to connectors with a detected connection + */ +static int create_crtc(struct drm_device *dev, struct omap_overlay *ovl, + int *j, unsigned int connected_connectors) +{ + struct omap_drm_private *priv = dev->dev_private; + struct omap_overlay_manager *mgr = NULL; + struct drm_crtc *crtc; + + if (ovl->manager) { + DBG("disconnecting %s from %s", ovl->name, + ovl->manager->name); + ovl->unset_manager(ovl); + } + + /* find next best connector, ones with detected connection first + */ + while (*j < priv->num_connectors && !mgr) { + if (connected_connectors & (1 << *j)) { + struct drm_encoder *encoder = + omap_connector_attached_encoder( + priv->connectors[*j]); + if (encoder) { + mgr = omap_encoder_get_manager(encoder); + } + } + (*j)++; + } + + /* if we couldn't find another connected connector, lets start + * looking at the unconnected connectors: + * + * note: it might not be immediately apparent, but thanks to + * the !mgr check in both this loop and the one above, the only + * way to enter this loop is with *j == priv->num_connectors, + * so idx can never go negative. + */ + while (*j < 2 * priv->num_connectors && !mgr) { + int idx = *j - priv->num_connectors; + if (!(connected_connectors & (1 << idx))) { + struct drm_encoder *encoder = + omap_connector_attached_encoder( + priv->connectors[idx]); + if (encoder) { + mgr = omap_encoder_get_manager(encoder); + } + } + (*j)++; + } + + if (mgr) { + DBG("connecting %s to %s", ovl->name, mgr->name); + ovl->set_manager(ovl, mgr); + } + + crtc = omap_crtc_init(dev, ovl, priv->num_crtcs); + + if (!crtc) { + dev_err(dev->dev, "could not create CRTC: %s\n", + ovl->name); + return -ENOMEM; + } + + BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs)); + + priv->crtcs[priv->num_crtcs++] = crtc; + + return 0; +} + +static int match_dev_name(struct omap_dss_device *dssdev, void *data) +{ + return !strcmp(dssdev->name, data); +} + +static unsigned int detect_connectors(struct drm_device *dev) +{ + struct omap_drm_private *priv = dev->dev_private; + unsigned int connected_connectors = 0; + int i; + + for (i = 0; i < priv->num_connectors; i++) { + struct drm_connector *connector = priv->connectors[i]; + if (omap_connector_detect(connector, true) == + connector_status_connected) { + connected_connectors |= (1 << i); + } + } + + return connected_connectors; +} + +static int omap_modeset_init(struct drm_device *dev) +{ + const struct omap_drm_platform_data *pdata = dev->dev->platform_data; + struct omap_drm_private *priv = dev->dev_private; + struct omap_dss_device *dssdev = NULL; + int i, j; + unsigned int connected_connectors = 0; + + drm_mode_config_init(dev); + + if (pdata) { + /* if platform data is provided by the board file, use it to + * control which overlays, managers, and devices we own. + */ + for (i = 0; i < pdata->mgr_cnt; i++) { + struct omap_overlay_manager *mgr = + omap_dss_get_overlay_manager(pdata->mgr_ids[i]); + create_encoder(dev, mgr); + } + + for (i = 0; i < pdata->dev_cnt; i++) { + struct omap_dss_device *dssdev = + omap_dss_find_device( + (void *)pdata->dev_names[i], match_dev_name); + if (!dssdev) { + dev_warn(dev->dev, "no such dssdev: %s\n", + pdata->dev_names[i]); + continue; + } + create_connector(dev, dssdev); + } + + connected_connectors = detect_connectors(dev); + + j = 0; + for (i = 0; i < pdata->ovl_cnt; i++) { + struct omap_overlay *ovl = + omap_dss_get_overlay(pdata->ovl_ids[i]); + create_crtc(dev, ovl, &j, connected_connectors); + } + } else { + /* otherwise just grab up to CONFIG_DRM_OMAP_NUM_CRTCS and try + * to make educated guesses about everything else + */ + int max_overlays = min(omap_dss_get_num_overlays(), num_crtc); + + for (i = 0; i < omap_dss_get_num_overlay_managers(); i++) { + create_encoder(dev, omap_dss_get_overlay_manager(i)); + } + + for_each_dss_dev(dssdev) { + create_connector(dev, dssdev); + } + + connected_connectors = detect_connectors(dev); + + j = 0; + for (i = 0; i < max_overlays; i++) { + create_crtc(dev, omap_dss_get_overlay(i), + &j, connected_connectors); + } + } + + /* for now keep the mapping of CRTCs and encoders static.. */ + for (i = 0; i < priv->num_encoders; i++) { + struct drm_encoder *encoder = priv->encoders[i]; + struct omap_overlay_manager *mgr = + omap_encoder_get_manager(encoder); + + encoder->possible_crtcs = 0; + + for (j = 0; j < priv->num_crtcs; j++) { + struct omap_overlay *ovl = + omap_crtc_get_overlay(priv->crtcs[j]); + if (ovl->manager == mgr) { + encoder->possible_crtcs |= (1 << j); + } + } + + DBG("%s: possible_crtcs=%08x", mgr->name, + encoder->possible_crtcs); + } + + dump_video_chains(); + + dev->mode_config.min_width = 256; + dev->mode_config.min_height = 256; + + /* note: eventually will need some cpu_is_omapXYZ() type stuff here + * to fill in these limits properly on different OMAP generations.. + */ + dev->mode_config.max_width = 2048; + dev->mode_config.max_height = 2048; + + dev->mode_config.funcs = &omap_mode_config_funcs; + + return 0; +} + +static void omap_modeset_free(struct drm_device *dev) +{ + drm_mode_config_cleanup(dev); +} + +/* + * drm ioctl funcs + */ + + +static int ioctl_get_param(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_param *args = data; + + DBG("%p: param=%llu", dev, args->param); + + switch (args->param) { + case OMAP_PARAM_CHIPSET_ID: + args->value = GET_OMAP_TYPE; + break; + default: + DBG("unknown parameter %lld", args->param); + return -EINVAL; + } + + return 0; +} + +static int ioctl_set_param(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_param *args = data; + + switch (args->param) { + default: + DBG("unknown parameter %lld", args->param); + return -EINVAL; + } + + return 0; +} + +static int ioctl_gem_new(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_gem_new *args = data; + DBG("%p:%p: size=0x%08x, flags=%08x", dev, file_priv, + args->size.bytes, args->flags); + return omap_gem_new_handle(dev, file_priv, args->size, + args->flags, &args->handle); +} + +static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_gem_cpu_prep *args = data; + struct drm_gem_object *obj; + int ret; + + VERB("%p:%p: handle=%d, op=%x", dev, file_priv, args->handle, args->op); + + obj = drm_gem_object_lookup(dev, file_priv, args->handle); + if (!obj) { + return -ENOENT; + } + + ret = omap_gem_op_sync(obj, args->op); + + if (!ret) { + ret = omap_gem_op_start(obj, args->op); + } + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static int ioctl_gem_cpu_fini(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_gem_cpu_fini *args = data; + struct drm_gem_object *obj; + int ret; + + VERB("%p:%p: handle=%d", dev, file_priv, args->handle); + + obj = drm_gem_object_lookup(dev, file_priv, args->handle); + if (!obj) { + return -ENOENT; + } + + /* XXX flushy, flushy */ + ret = 0; + + if (!ret) { + ret = omap_gem_op_finish(obj, args->op); + } + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static int ioctl_gem_info(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_omap_gem_info *args = data; + struct drm_gem_object *obj; + int ret = 0; + + DBG("%p:%p: handle=%d", dev, file_priv, args->handle); + + obj = drm_gem_object_lookup(dev, file_priv, args->handle); + if (!obj) { + return -ENOENT; + } + + args->size = obj->size; /* for now */ + args->offset = omap_gem_mmap_offset(obj); + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = { + DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH), +}; + +/* + * drm driver funcs + */ + +/** + * load - setup chip and create an initial config + * @dev: DRM device + * @flags: startup flags + * + * The driver load routine has to do several things: + * - initialize the memory manager + * - allocate initial config memory + * - setup the DRM framebuffer with the allocated memory + */ +static int dev_load(struct drm_device *dev, unsigned long flags) +{ + struct omap_drm_private *priv; + int ret; + + DBG("load: dev=%p", dev); + + drm_device = dev; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(dev->dev, "could not allocate priv\n"); + return -ENOMEM; + } + + dev->dev_private = priv; + + ret = omap_modeset_init(dev); + if (ret) { + dev_err(dev->dev, "omap_modeset_init failed: ret=%d\n", ret); + dev->dev_private = NULL; + kfree(priv); + return ret; + } + + priv->fbdev = omap_fbdev_init(dev); + if (!priv->fbdev) { + dev_warn(dev->dev, "omap_fbdev_init failed\n"); + /* well, limp along without an fbdev.. maybe X11 will work? */ + } + + drm_kms_helper_poll_init(dev); + + ret = drm_vblank_init(dev, priv->num_crtcs); + if (ret) { + dev_warn(dev->dev, "could not init vblank\n"); + } + + return 0; +} + +static int dev_unload(struct drm_device *dev) +{ + DBG("unload: dev=%p", dev); + + drm_vblank_cleanup(dev); + drm_kms_helper_poll_fini(dev); + + omap_fbdev_free(dev); + + omap_modeset_free(dev); + + kfree(dev->dev_private); + dev->dev_private = NULL; + + return 0; +} + +static int dev_open(struct drm_device *dev, struct drm_file *file) +{ + file->driver_priv = NULL; + + DBG("open: dev=%p, file=%p", dev, file); + + return 0; +} + +static int dev_firstopen(struct drm_device *dev) +{ + DBG("firstopen: dev=%p", dev); + return 0; +} + +/** + * lastclose - clean up after all DRM clients have exited + * @dev: DRM device + * + * Take care of cleaning up after all DRM clients have exited. In the + * mode setting case, we want to restore the kernel's initial mode (just + * in case the last client left us in a bad state). + */ +static void dev_lastclose(struct drm_device *dev) +{ + /* we don't support vga-switcheroo.. so just make sure the fbdev + * mode is active + */ + struct omap_drm_private *priv = dev->dev_private; + int ret; + + DBG("lastclose: dev=%p", dev); + + ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev); + if (ret) + DBG("failed to restore crtc mode"); +} + +static void dev_preclose(struct drm_device *dev, struct drm_file *file) +{ + DBG("preclose: dev=%p", dev); +} + +static void dev_postclose(struct drm_device *dev, struct drm_file *file) +{ + DBG("postclose: dev=%p, file=%p", dev, file); +} + +/** + * enable_vblank - enable vblank interrupt events + * @dev: DRM device + * @crtc: which irq to enable + * + * Enable vblank interrupts for @crtc. If the device doesn't have + * a hardware vblank counter, this routine should be a no-op, since + * interrupts will have to stay on to keep the count accurate. + * + * RETURNS + * Zero on success, appropriate errno if the given @crtc's vblank + * interrupt cannot be enabled. + */ +static int dev_enable_vblank(struct drm_device *dev, int crtc) +{ + DBG("enable_vblank: dev=%p, crtc=%d", dev, crtc); + return 0; +} + +/** + * disable_vblank - disable vblank interrupt events + * @dev: DRM device + * @crtc: which irq to enable + * + * Disable vblank interrupts for @crtc. If the device doesn't have + * a hardware vblank counter, this routine should be a no-op, since + * interrupts will have to stay on to keep the count accurate. + */ +static void dev_disable_vblank(struct drm_device *dev, int crtc) +{ + DBG("disable_vblank: dev=%p, crtc=%d", dev, crtc); +} + +static irqreturn_t dev_irq_handler(DRM_IRQ_ARGS) +{ + return IRQ_HANDLED; +} + +static void dev_irq_preinstall(struct drm_device *dev) +{ + DBG("irq_preinstall: dev=%p", dev); +} + +static int dev_irq_postinstall(struct drm_device *dev) +{ + DBG("irq_postinstall: dev=%p", dev); + return 0; +} + +static void dev_irq_uninstall(struct drm_device *dev) +{ + DBG("irq_uninstall: dev=%p", dev); +} + +static struct vm_operations_struct omap_gem_vm_ops = { + .fault = omap_gem_fault, + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static struct drm_driver omap_drm_driver = { + .driver_features = + DRIVER_HAVE_IRQ | DRIVER_MODESET | DRIVER_GEM, + .load = dev_load, + .unload = dev_unload, + .open = dev_open, + .firstopen = dev_firstopen, + .lastclose = dev_lastclose, + .preclose = dev_preclose, + .postclose = dev_postclose, + .get_vblank_counter = drm_vblank_count, + .enable_vblank = dev_enable_vblank, + .disable_vblank = dev_disable_vblank, + .irq_preinstall = dev_irq_preinstall, + .irq_postinstall = dev_irq_postinstall, + .irq_uninstall = dev_irq_uninstall, + .irq_handler = dev_irq_handler, + .reclaim_buffers = drm_core_reclaim_buffers, + .gem_init_object = omap_gem_init_object, + .gem_free_object = omap_gem_free_object, + .gem_vm_ops = &omap_gem_vm_ops, + .dumb_create = omap_gem_dumb_create, + .dumb_map_offset = omap_gem_dumb_map_offset, + .dumb_destroy = omap_gem_dumb_destroy, + .ioctls = ioctls, + .num_ioctls = DRM_OMAP_NUM_IOCTLS, + .fops = { + .owner = THIS_MODULE, + .open = drm_open, + .unlocked_ioctl = drm_ioctl, + .release = drm_release, + .mmap = omap_gem_mmap, + .poll = drm_poll, + .fasync = drm_fasync, + .read = drm_read, + .llseek = noop_llseek, + }, + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, + .patchlevel = DRIVER_PATCHLEVEL, +}; + +static int pdev_suspend(struct platform_device *pDevice, pm_message_t state) +{ + DBG(""); + return 0; +} + +static int pdev_resume(struct platform_device *device) +{ + DBG(""); + return 0; +} + +static void pdev_shutdown(struct platform_device *device) +{ + DBG(""); +} + +static int pdev_probe(struct platform_device *device) +{ + DBG("%s", device->name); + return drm_platform_init(&omap_drm_driver, device); +} + +static int pdev_remove(struct platform_device *device) +{ + DBG(""); + drm_platform_exit(&omap_drm_driver, device); + return 0; +} + +struct platform_driver pdev = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + .probe = pdev_probe, + .remove = pdev_remove, + .suspend = pdev_suspend, + .resume = pdev_resume, + .shutdown = pdev_shutdown, +}; + +static int __init omap_drm_init(void) +{ + DBG("init"); + return platform_driver_register(&pdev); +} + +static void __exit omap_drm_fini(void) +{ + DBG("fini"); + platform_driver_unregister(&pdev); +} + +/* need late_initcall() so we load after dss_driver's are loaded */ +late_initcall(omap_drm_init); +module_exit(omap_drm_fini); + +MODULE_AUTHOR("Rob Clark <rob@ti.com>"); +MODULE_DESCRIPTION("OMAP DRM Display Driver"); +MODULE_ALIAS("platform:" DRIVER_NAME); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/omapdrm/omap_drv.h b/drivers/staging/omapdrm/omap_drv.h new file mode 100644 index 0000000..c8f2752 --- /dev/null +++ b/drivers/staging/omapdrm/omap_drv.h @@ -0,0 +1,124 @@ +/* + * drivers/staging/omapdrm/omap_drv.h + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __OMAP_DRV_H__ +#define __OMAP_DRV_H__ + +#include <video/omapdss.h> +#include <linux/module.h> +#include <linux/types.h> +#include <drm/drmP.h> +#include "omap_drm.h" +#include "omap_priv.h" + +#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) +#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt, ##__VA_ARGS__) /* verbose debug */ + +#define MODULE_NAME "omapdrm" + +/* max # of mapper-id's that can be assigned.. todo, come up with a better + * (but still inexpensive) way to store/access per-buffer mapper private + * data.. + */ +#define MAX_MAPPERS 2 + +struct omap_drm_private { + unsigned int num_crtcs; + struct drm_crtc *crtcs[8]; + unsigned int num_encoders; + struct drm_encoder *encoders[8]; + unsigned int num_connectors; + struct drm_connector *connectors[8]; + + struct drm_fb_helper *fbdev; +}; + +struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev); +void omap_fbdev_free(struct drm_device *dev); + +struct drm_crtc *omap_crtc_init(struct drm_device *dev, + struct omap_overlay *ovl, int id); +struct omap_overlay *omap_crtc_get_overlay(struct drm_crtc *crtc); + +struct drm_encoder *omap_encoder_init(struct drm_device *dev, + struct omap_overlay_manager *mgr); +struct omap_overlay_manager *omap_encoder_get_manager( + struct drm_encoder *encoder); +struct drm_encoder *omap_connector_attached_encoder( + struct drm_connector *connector); +enum drm_connector_status omap_connector_detect( + struct drm_connector *connector, bool force); + +struct drm_connector *omap_connector_init(struct drm_device *dev, + int connector_type, struct omap_dss_device *dssdev); +void omap_connector_mode_set(struct drm_connector *connector, + struct drm_display_mode *mode); +void omap_connector_flush(struct drm_connector *connector, + int x, int y, int w, int h); + +struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, + struct drm_file *file, struct drm_mode_fb_cmd *mode_cmd); +struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, + struct drm_mode_fb_cmd *mode_cmd, struct drm_gem_object *bo); +struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb); +int omap_framebuffer_get_buffer(struct drm_framebuffer *fb, int x, int y, + void **vaddr, dma_addr_t *paddr, unsigned int *screen_width); +struct drm_connector *omap_framebuffer_get_next_connector( + struct drm_framebuffer *fb, struct drm_connector *from); +void omap_framebuffer_flush(struct drm_framebuffer *fb, + int x, int y, int w, int h); + + +struct drm_gem_object *omap_gem_new(struct drm_device *dev, + union omap_gem_size gsize, uint32_t flags); +int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file, + union omap_gem_size gsize, uint32_t flags, uint32_t *handle); +void omap_gem_free_object(struct drm_gem_object *obj); +int omap_gem_init_object(struct drm_gem_object *obj); +void *omap_gem_vaddr(struct drm_gem_object *obj); +int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, + uint32_t handle, uint64_t *offset); +int omap_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev, + uint32_t handle); +int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args); +int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma); +int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); +int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op); +int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op); +int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op); +int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op, + void (*fxn)(void *arg), void *arg); +int omap_gem_get_paddr(struct drm_gem_object *obj, + dma_addr_t *paddr, bool remap); +int omap_gem_put_paddr(struct drm_gem_object *obj); +uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj); + +static inline int align_pitch(int pitch, int width, int bpp) +{ + int bytespp = (bpp + 7) / 8; + /* in case someone tries to feed us a completely bogus stride: */ + pitch = max(pitch, width * bytespp); + /* PVR needs alignment to 8 pixels.. right now that is the most + * restrictive stride requirement.. + */ + return ALIGN(pitch, 8 * bytespp); +} + +#endif /* __OMAP_DRV_H__ */ diff --git a/drivers/staging/omapdrm/omap_encoder.c b/drivers/staging/omapdrm/omap_encoder.c new file mode 100644 index 0000000..83bacd8 --- /dev/null +++ b/drivers/staging/omapdrm/omap_encoder.c @@ -0,0 +1,172 @@ +/* + * drivers/staging/omapdrm/omap_encoder.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_crtc.h" +#include "drm_crtc_helper.h" + +/* + * encoder funcs + */ + +#define to_omap_encoder(x) container_of(x, struct omap_encoder, base) + +struct omap_encoder { + struct drm_encoder base; + struct omap_overlay_manager *mgr; +}; + +static void omap_encoder_destroy(struct drm_encoder *encoder) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + DBG("%s", omap_encoder->mgr->name); + drm_encoder_cleanup(encoder); + kfree(omap_encoder); +} + +static void omap_encoder_dpms(struct drm_encoder *encoder, int mode) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + DBG("%s: %d", omap_encoder->mgr->name, mode); +} + +static bool omap_encoder_mode_fixup(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + DBG("%s", omap_encoder->mgr->name); + return true; +} + +static void omap_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + struct drm_device *dev = encoder->dev; + struct omap_drm_private *priv = dev->dev_private; + int i; + + mode = adjusted_mode; + + DBG("%s: set mode: %dx%d", omap_encoder->mgr->name, + mode->hdisplay, mode->vdisplay); + + for (i = 0; i < priv->num_connectors; i++) { + struct drm_connector *connector = priv->connectors[i]; + if (connector->encoder == encoder) { + omap_connector_mode_set(connector, mode); + } + } +} + +static void omap_encoder_prepare(struct drm_encoder *encoder) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + struct drm_encoder_helper_funcs *encoder_funcs = + encoder->helper_private; + DBG("%s", omap_encoder->mgr->name); + encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF); +} + +static void omap_encoder_commit(struct drm_encoder *encoder) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + struct drm_encoder_helper_funcs *encoder_funcs = + encoder->helper_private; + DBG("%s", omap_encoder->mgr->name); + omap_encoder->mgr->apply(omap_encoder->mgr); + encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); +} + +static const struct drm_encoder_funcs omap_encoder_funcs = { + .destroy = omap_encoder_destroy, +}; + +static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = { + .dpms = omap_encoder_dpms, + .mode_fixup = omap_encoder_mode_fixup, + .mode_set = omap_encoder_mode_set, + .prepare = omap_encoder_prepare, + .commit = omap_encoder_commit, +}; + +struct omap_overlay_manager *omap_encoder_get_manager( + struct drm_encoder *encoder) +{ + struct omap_encoder *omap_encoder = to_omap_encoder(encoder); + return omap_encoder->mgr; +} + +/* initialize encoder */ +struct drm_encoder *omap_encoder_init(struct drm_device *dev, + struct omap_overlay_manager *mgr) +{ + struct drm_encoder *encoder = NULL; + struct omap_encoder *omap_encoder; + struct omap_overlay_manager_info info; + int ret; + + DBG("%s", mgr->name); + + omap_encoder = kzalloc(sizeof(*omap_encoder), GFP_KERNEL); + if (!omap_encoder) { + dev_err(dev->dev, "could not allocate encoder\n"); + goto fail; + } + + omap_encoder->mgr = mgr; + encoder = &omap_encoder->base; + + drm_encoder_init(dev, encoder, &omap_encoder_funcs, + DRM_MODE_ENCODER_TMDS); + drm_encoder_helper_add(encoder, &omap_encoder_helper_funcs); + + mgr->get_manager_info(mgr, &info); + + /* TODO: fix hard-coded setup.. */ + info.default_color = 0x00000000; + info.trans_key = 0x00000000; + info.trans_key_type = OMAP_DSS_COLOR_KEY_GFX_DST; + info.trans_enabled = false; + + ret = mgr->set_manager_info(mgr, &info); + if (ret) { + dev_err(dev->dev, "could not set manager info\n"); + goto fail; + } + + ret = mgr->apply(mgr); + if (ret) { + dev_err(dev->dev, "could not apply\n"); + goto fail; + } + + return encoder; + +fail: + if (encoder) { + drm_encoder_cleanup(encoder); + kfree(omap_encoder); + } + + return NULL; +} diff --git a/drivers/staging/omapdrm/omap_fb.c b/drivers/staging/omapdrm/omap_fb.c new file mode 100644 index 0000000..82ed612 --- /dev/null +++ b/drivers/staging/omapdrm/omap_fb.c @@ -0,0 +1,261 @@ +/* + * drivers/staging/omapdrm/omap_fb.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_crtc.h" +#include "drm_crtc_helper.h" + + +/* + * framebuffer funcs + */ + +#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base) + +struct omap_framebuffer { + struct drm_framebuffer base; + struct drm_gem_object *bo; + int size; + dma_addr_t paddr; +}; + +static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, + struct drm_file *file_priv, + unsigned int *handle) +{ + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + return drm_gem_handle_create(file_priv, omap_fb->bo, handle); +} + +static void omap_framebuffer_destroy(struct drm_framebuffer *fb) +{ + struct drm_device *dev = fb->dev; + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + + DBG("destroy: FB ID: %d (%p)", fb->base.id, fb); + + drm_framebuffer_cleanup(fb); + + if (omap_gem_put_paddr(omap_fb->bo)) { + dev_err(dev->dev, "could not unmap!\n"); + } + + if (omap_fb->bo) { + drm_gem_object_unreference_unlocked(omap_fb->bo); + } + + kfree(omap_fb); +} + +static int omap_framebuffer_dirty(struct drm_framebuffer *fb, + struct drm_file *file_priv, unsigned flags, unsigned color, + struct drm_clip_rect *clips, unsigned num_clips) +{ + int i; + + for (i = 0; i < num_clips; i++) { + omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1, + clips[i].x2 - clips[i].x1, + clips[i].y2 - clips[i].y1); + } + + return 0; +} + +static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { + .create_handle = omap_framebuffer_create_handle, + .destroy = omap_framebuffer_destroy, + .dirty = omap_framebuffer_dirty, +}; + +/* returns the buffer size */ +int omap_framebuffer_get_buffer(struct drm_framebuffer *fb, int x, int y, + void **vaddr, dma_addr_t *paddr, unsigned int *screen_width) +{ + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + int bpp = fb->bits_per_pixel / 8; + unsigned long offset; + + offset = (x * bpp) + (y * fb->pitch); + + if (vaddr) { + void *bo_vaddr = omap_gem_vaddr(omap_fb->bo); + /* note: we can only count on having a vaddr for buffers that + * are allocated physically contiguously to begin with (ie. + * dma_alloc_coherent()). But this should be ok because it + * is only used by legacy fbdev + */ + BUG_ON(!bo_vaddr); + *vaddr = bo_vaddr + offset; + } + + *paddr = omap_fb->paddr + offset; + *screen_width = fb->pitch / bpp; + + return omap_fb->size - offset; +} + +struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb) +{ + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + return omap_fb->bo; +} + +/* iterate thru all the connectors, returning ones that are attached + * to the same fb.. + */ +struct drm_connector *omap_framebuffer_get_next_connector( + struct drm_framebuffer *fb, struct drm_connector *from) +{ + struct drm_device *dev = fb->dev; + struct list_head *connector_list = &dev->mode_config.connector_list; + struct drm_connector *connector = from; + + if (!from) { + return list_first_entry(connector_list, typeof(*from), head); + } + + list_for_each_entry_from(connector, connector_list, head) { + if (connector != from) { + struct drm_encoder *encoder = connector->encoder; + struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; + if (crtc && crtc->fb == fb) { + return connector; + } + } + } + + return NULL; +} + +/* flush an area of the framebuffer (in case of manual update display that + * is not automatically flushed) + */ +void omap_framebuffer_flush(struct drm_framebuffer *fb, + int x, int y, int w, int h) +{ + struct drm_connector *connector = NULL; + + VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb); + + while ((connector = omap_framebuffer_get_next_connector(fb, connector))) { + /* only consider connectors that are part of a chain */ + if (connector->encoder && connector->encoder->crtc) { + /* TODO: maybe this should propagate thru the crtc who + * could do the coordinate translation.. + */ + struct drm_crtc *crtc = connector->encoder->crtc; + int cx = max(0, x - crtc->x); + int cy = max(0, y - crtc->y); + int cw = w + (x - crtc->x) - cx; + int ch = h + (y - crtc->y) - cy; + + omap_connector_flush(connector, cx, cy, cw, ch); + } + } +} + +struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, + struct drm_file *file, struct drm_mode_fb_cmd *mode_cmd) +{ + struct drm_gem_object *bo; + struct drm_framebuffer *fb; + bo = drm_gem_object_lookup(dev, file, mode_cmd->handle); + if (!bo) { + return ERR_PTR(-ENOENT); + } + fb = omap_framebuffer_init(dev, mode_cmd, bo); + if (!fb) { + return ERR_PTR(-ENOMEM); + } + return fb; +} + +struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, + struct drm_mode_fb_cmd *mode_cmd, struct drm_gem_object *bo) +{ + struct omap_framebuffer *omap_fb; + struct drm_framebuffer *fb = NULL; + int size, ret; + + DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%d)", + dev, mode_cmd, mode_cmd->width, mode_cmd->height, + mode_cmd->bpp); + + /* in case someone tries to feed us a completely bogus stride: */ + mode_cmd->pitch = align_pitch(mode_cmd->pitch, + mode_cmd->width, mode_cmd->bpp); + + omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL); + if (!omap_fb) { + dev_err(dev->dev, "could not allocate fb\n"); + goto fail; + } + + fb = &omap_fb->base; + ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs); + if (ret) { + dev_err(dev->dev, "framebuffer init failed: %d\n", ret); + goto fail; + } + + DBG("create: FB ID: %d (%p)", fb->base.id, fb); + + size = PAGE_ALIGN(mode_cmd->pitch * mode_cmd->height); + + if (bo) { + DBG("using existing %d byte buffer (needed %d)", bo->size, size); + if (size > bo->size) { + dev_err(dev->dev, "provided buffer object is too small!\n"); + goto fail; + } + } else { + /* for convenience of all the various callers who don't want + * to be bothered to allocate their own buffer.. + */ + union omap_gem_size gsize = { + .bytes = size, + }; + DBG("allocating %d bytes for fb %d", size, dev->primary->index); + bo = omap_gem_new(dev, gsize, OMAP_BO_SCANOUT | OMAP_BO_WC); + if (!bo) { + dev_err(dev->dev, "failed to allocate buffer object\n"); + goto fail; + } + } + + omap_fb->bo = bo; + omap_fb->size = size; + + if (omap_gem_get_paddr(bo, &omap_fb->paddr, true)) { + dev_err(dev->dev, "could not map (paddr)!\n"); + goto fail; + } + + drm_helper_mode_fill_fb_struct(fb, mode_cmd); + + return fb; + +fail: + if (fb) { + omap_framebuffer_destroy(fb); + } + return NULL; +} diff --git a/drivers/staging/omapdrm/omap_fbdev.c b/drivers/staging/omapdrm/omap_fbdev.c new file mode 100644 index 0000000..048077c --- /dev/null +++ b/drivers/staging/omapdrm/omap_fbdev.c @@ -0,0 +1,304 @@ +/* + * drivers/staging/omapdrm/omap_fbdev.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "omap_drv.h" + +#include "drm_crtc.h" +#include "drm_fb_helper.h" + +/* + * fbdev funcs, to implement legacy fbdev interface on top of drm driver + */ + +#define to_omap_fbdev(x) container_of(x, struct omap_fbdev, base) + +struct omap_fbdev { + struct drm_fb_helper base; + struct drm_framebuffer *fb; +}; + +static void omap_fbdev_flush(struct fb_info *fbi, int x, int y, int w, int h); + +static ssize_t omap_fbdev_write(struct fb_info *fbi, const char __user *buf, + size_t count, loff_t *ppos) +{ + ssize_t res; + + res = fb_sys_write(fbi, buf, count, ppos); + omap_fbdev_flush(fbi, 0, 0, fbi->var.xres, fbi->var.yres); + + return res; +} + +static void omap_fbdev_fillrect(struct fb_info *fbi, + const struct fb_fillrect *rect) +{ + sys_fillrect(fbi, rect); + omap_fbdev_flush(fbi, rect->dx, rect->dy, rect->width, rect->height); +} + +static void omap_fbdev_copyarea(struct fb_info *fbi, + const struct fb_copyarea *area) +{ + sys_copyarea(fbi, area); + omap_fbdev_flush(fbi, area->dx, area->dy, area->width, area->height); +} + +static void omap_fbdev_imageblit(struct fb_info *fbi, + const struct fb_image *image) +{ + sys_imageblit(fbi, image); + omap_fbdev_flush(fbi, image->dx, image->dy, + image->width, image->height); +} + +static struct fb_ops omap_fb_ops = { + .owner = THIS_MODULE, + + /* Note: to properly handle manual update displays, we wrap the + * basic fbdev ops which write to the framebuffer + */ + .fb_read = fb_sys_read, + .fb_write = omap_fbdev_write, + .fb_fillrect = omap_fbdev_fillrect, + .fb_copyarea = omap_fbdev_copyarea, + .fb_imageblit = omap_fbdev_imageblit, + + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, + + .fb_debug_enter = drm_fb_helper_debug_enter, + .fb_debug_leave = drm_fb_helper_debug_leave, +}; + +static int omap_fbdev_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct omap_fbdev *fbdev = to_omap_fbdev(helper); + struct drm_device *dev = helper->dev; + struct drm_framebuffer *fb = NULL; + struct fb_info *fbi = NULL; + struct drm_mode_fb_cmd mode_cmd = {0}; + dma_addr_t paddr; + void __iomem *vaddr; + int size, screen_width; + int ret; + + /* only doing ARGB32 since this is what is needed to alpha-blend + * with video overlays: + */ + sizes->surface_bpp = 32; + sizes->surface_depth = 32; + + DBG("create fbdev: %dx%d@%d", sizes->surface_width, + sizes->surface_height, sizes->surface_bpp); + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + + mode_cmd.bpp = sizes->surface_bpp; + mode_cmd.depth = sizes->surface_depth; + + fb = omap_framebuffer_init(dev, &mode_cmd, NULL); + if (!fb) { + dev_err(dev->dev, "failed to allocate fb\n"); + ret = -ENOMEM; + goto fail; + } + + mutex_lock(&dev->struct_mutex); + + fbi = framebuffer_alloc(0, dev->dev); + if (!fbi) { + dev_err(dev->dev, "failed to allocate fb info\n"); + ret = -ENOMEM; + goto fail_unlock; + } + + DBG("fbi=%p, dev=%p", fbi, dev); + + fbdev->fb = fb; + helper->fb = fb; + helper->fbdev = fbi; + + fbi->par = helper; + fbi->flags = FBINFO_DEFAULT; + fbi->fbops = &omap_fb_ops; + + strcpy(fbi->fix.id, MODULE_NAME); + + ret = fb_alloc_cmap(&fbi->cmap, 256, 0); + if (ret) { + ret = -ENOMEM; + goto fail_unlock; + } + + drm_fb_helper_fill_fix(fbi, fb->pitch, fb->depth); + drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height); + + size = omap_framebuffer_get_buffer(fb, 0, 0, + &vaddr, &paddr, &screen_width); + + dev->mode_config.fb_base = paddr; + + fbi->screen_base = vaddr; + fbi->screen_size = size; + fbi->fix.smem_start = paddr; + fbi->fix.smem_len = size; + + DBG("par=%p, %dx%d", fbi->par, fbi->var.xres, fbi->var.yres); + DBG("allocated %dx%d fb", fbdev->fb->width, fbdev->fb->height); + + mutex_unlock(&dev->struct_mutex); + + return 0; + +fail_unlock: + mutex_unlock(&dev->struct_mutex); +fail: + + if (ret) { + if (fbi) + framebuffer_release(fbi); + if (fb) + fb->funcs->destroy(fb); + } + + return ret; +} + +static void omap_crtc_fb_gamma_set(struct drm_crtc *crtc, + u16 red, u16 green, u16 blue, int regno) +{ + DBG("fbdev: set gamma"); +} + +static void omap_crtc_fb_gamma_get(struct drm_crtc *crtc, + u16 *red, u16 *green, u16 *blue, int regno) +{ + DBG("fbdev: get gamma"); +} + +static int omap_fbdev_probe(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + int new_fb = 0; + int ret; + + if (!helper->fb) { + ret = omap_fbdev_create(helper, sizes); + if (ret) + return ret; + new_fb = 1; + } + return new_fb; +} + +static struct drm_fb_helper_funcs omap_fb_helper_funcs = { + .gamma_set = omap_crtc_fb_gamma_set, + .gamma_get = omap_crtc_fb_gamma_get, + .fb_probe = omap_fbdev_probe, +}; + +static struct drm_fb_helper *get_fb(struct fb_info *fbi) +{ + if (!fbi || strcmp(fbi->fix.id, MODULE_NAME)) { + /* these are not the fb's you're looking for */ + return NULL; + } + return fbi->par; +} + +/* flush an area of the framebuffer (in case of manual update display that + * is not automatically flushed) + */ +static void omap_fbdev_flush(struct fb_info *fbi, int x, int y, int w, int h) +{ + struct drm_fb_helper *helper = get_fb(fbi); + + if (!helper) + return; + + VERB("flush fbdev: %d,%d %dx%d, fbi=%p", x, y, w, h, fbi); + + omap_framebuffer_flush(helper->fb, x, y, w, h); +} + +/* initialize fbdev helper */ +struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) +{ + struct omap_drm_private *priv = dev->dev_private; + struct omap_fbdev *fbdev = NULL; + struct drm_fb_helper *helper; + int ret = 0; + + fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); + if (!fbdev) { + dev_err(dev->dev, "could not allocate fbdev\n"); + goto fail; + } + + helper = &fbdev->base; + + helper->funcs = &omap_fb_helper_funcs; + + ret = drm_fb_helper_init(dev, helper, + priv->num_crtcs, priv->num_connectors); + if (ret) { + dev_err(dev->dev, "could not init fbdev: ret=%d\n", ret); + goto fail; + } + + drm_fb_helper_single_add_all_connectors(helper); + drm_fb_helper_initial_config(helper, 32); + + priv->fbdev = helper; + + return helper; + +fail: + kfree(fbdev); + return NULL; +} + +void omap_fbdev_free(struct drm_device *dev) +{ + struct omap_drm_private *priv = dev->dev_private; + struct drm_fb_helper *helper = priv->fbdev; + struct omap_fbdev *fbdev; + struct fb_info *fbi; + + DBG(); + + fbi = helper->fbdev; + + unregister_framebuffer(fbi); + framebuffer_release(fbi); + + drm_fb_helper_fini(helper); + + fbdev = to_omap_fbdev(priv->fbdev); + + kfree(fbdev); + + priv->fbdev = NULL; +} diff --git a/drivers/staging/omapdrm/omap_gem.c b/drivers/staging/omapdrm/omap_gem.c new file mode 100644 index 0000000..bc1709c --- /dev/null +++ b/drivers/staging/omapdrm/omap_gem.c @@ -0,0 +1,774 @@ +/* + * drivers/staging/omapdrm/omap_gem.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob.clark@linaro.org> + * + * 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/>. + */ + + +#include <linux/spinlock.h> +#include <linux/shmem_fs.h> + +#include "omap_drv.h" + +/* remove these once drm core helpers are merged */ +struct page ** _drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask); +void _drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, + bool dirty, bool accessed); + +/* + * GEM buffer object implementation. + */ + +#define to_omap_bo(x) container_of(x, struct omap_gem_object, base) + +/* note: we use upper 8 bits of flags for driver-internal flags: */ +#define OMAP_BO_DMA 0x01000000 /* actually is physically contiguous */ +#define OMAP_BO_EXT_SYNC 0x02000000 /* externally allocated sync object */ +#define OMAP_BO_EXT_MEM 0x04000000 /* externally allocated memory */ + + +struct omap_gem_object { + struct drm_gem_object base; + + uint32_t flags; + + /** + * If buffer is allocated physically contiguous, the OMAP_BO_DMA flag + * is set and the paddr is valid. + * + * Note that OMAP_BO_SCANOUT is a hint from userspace that DMA capable + * buffer is requested, but doesn't mean that it is. Use the + * OMAP_BO_DMA flag to determine if the buffer has a DMA capable + * physical address. + */ + dma_addr_t paddr; + + /** + * Array of backing pages, if allocated. Note that pages are never + * allocated for buffers originally allocated from contiguous memory + */ + struct page **pages; + + /** + * Virtual address, if mapped. + */ + void *vaddr; + + /** + * sync-object allocated on demand (if needed) + * + * Per-buffer sync-object for tracking pending and completed hw/dma + * read and write operations. The layout in memory is dictated by + * the SGX firmware, which uses this information to stall the command + * stream if a surface is not ready yet. + * + * Note that when buffer is used by SGX, the sync-object needs to be + * allocated from a special heap of sync-objects. This way many sync + * objects can be packed in a page, and not waste GPU virtual address + * space. Because of this we have to have a omap_gem_set_sync_object() + * API to allow replacement of the syncobj after it has (potentially) + * already been allocated. A bit ugly but I haven't thought of a + * better alternative. + */ + struct { + uint32_t write_pending; + uint32_t write_complete; + uint32_t read_pending; + uint32_t read_complete; + } *sync; +}; + +/* GEM objects can either be allocated from contiguous memory (in which + * case obj->filp==NULL), or w/ shmem backing (obj->filp!=NULL). But non + * contiguous buffers can be remapped in TILER/DMM if they need to be + * contiguous... but we don't do this all the time to reduce pressure + * on TILER/DMM space when we know at allocation time that the buffer + * will need to be scanned out. + */ +static inline bool is_shmem(struct drm_gem_object *obj) +{ + return obj->filp != NULL; +} + +static int get_pages(struct drm_gem_object *obj, struct page ***pages); + +static DEFINE_SPINLOCK(sync_lock); + +/** ensure backing pages are allocated */ +static int omap_gem_attach_pages(struct drm_gem_object *obj) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + struct page **pages; + + WARN_ON(omap_obj->pages); + + /* TODO: __GFP_DMA32 .. but somehow GFP_HIGHMEM is coming from the + * mapping_gfp_mask(mapping) which conflicts w/ GFP_DMA32.. probably + * we actually want CMA memory for it all anyways.. + */ + pages = _drm_gem_get_pages(obj, GFP_KERNEL); + if (IS_ERR(pages)) { + dev_err(obj->dev->dev, "could not get pages: %ld\n", PTR_ERR(pages)); + return PTR_ERR(pages); + } + + omap_obj->pages = pages; + return 0; +} + +/** release backing pages */ +static void omap_gem_detach_pages(struct drm_gem_object *obj) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + _drm_gem_put_pages(obj, omap_obj->pages, true, false); + omap_obj->pages = NULL; +} + +/** get mmap offset */ +uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj) +{ + if (!obj->map_list.map) { + /* Make it mmapable */ + int ret = drm_gem_create_mmap_offset(obj); + if (ret) { + dev_err(obj->dev->dev, "could not allocate mmap offset"); + return 0; + } + } + + return (uint64_t)obj->map_list.hash.key << PAGE_SHIFT; +} + +/** + * omap_gem_fault - pagefault handler for GEM objects + * @vma: the VMA of the GEM object + * @vmf: fault detail + * + * Invoked when a fault occurs on an mmap of a GEM managed area. GEM + * does most of the work for us including the actual map/unmap calls + * but we need to do the actual page work. + * + * The VMA was set up by GEM. In doing so it also ensured that the + * vma->vm_private_data points to the GEM object that is backing this + * mapping. + */ +int omap_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct drm_gem_object *obj = vma->vm_private_data; + struct omap_gem_object *omap_obj = to_omap_bo(obj); + struct drm_device *dev = obj->dev; + struct page **pages; + unsigned long pfn; + pgoff_t pgoff; + int ret; + + /* Make sure we don't parallel update on a fault, nor move or remove + * something from beneath our feet + */ + mutex_lock(&dev->struct_mutex); + + /* if a shmem backed object, make sure we have pages attached now */ + ret = get_pages(obj, &pages); + if (ret) { + goto fail; + } + + /* where should we do corresponding put_pages().. we are mapping + * the original page, rather than thru a GART, so we can't rely + * on eviction to trigger this. But munmap() or all mappings should + * probably trigger put_pages()? + */ + + /* We don't use vmf->pgoff since that has the fake offset: */ + pgoff = ((unsigned long)vmf->virtual_address - + vma->vm_start) >> PAGE_SHIFT; + + if (omap_obj->pages) { + pfn = page_to_pfn(omap_obj->pages[pgoff]); + } else { + BUG_ON(!(omap_obj->flags & OMAP_BO_DMA)); + pfn = (omap_obj->paddr >> PAGE_SHIFT) + pgoff; + } + + VERB("Inserting %p pfn %lx, pa %lx", vmf->virtual_address, + pfn, pfn << PAGE_SHIFT); + + ret = vm_insert_mixed(vma, (unsigned long)vmf->virtual_address, pfn); + +fail: + mutex_unlock(&dev->struct_mutex); + switch (ret) { + case 0: + case -ERESTARTSYS: + case -EINTR: + return VM_FAULT_NOPAGE; + case -ENOMEM: + return VM_FAULT_OOM; + default: + return VM_FAULT_SIGBUS; + } +} + +/** We override mainly to fix up some of the vm mapping flags.. */ +int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct omap_gem_object *omap_obj; + int ret; + + ret = drm_gem_mmap(filp, vma); + if (ret) { + DBG("mmap failed: %d", ret); + return ret; + } + + /* after drm_gem_mmap(), it is safe to access the obj */ + omap_obj = to_omap_bo(vma->vm_private_data); + + vma->vm_flags &= ~VM_PFNMAP; + vma->vm_flags |= VM_MIXEDMAP; + + if (omap_obj->flags & OMAP_BO_WC) { + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + } else if (omap_obj->flags & OMAP_BO_UNCACHED) { + vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); + } else { + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + } + + return ret; +} + +/** + * omap_gem_dumb_create - create a dumb buffer + * @drm_file: our client file + * @dev: our device + * @args: the requested arguments copied from userspace + * + * Allocate a buffer suitable for use for a frame buffer of the + * form described by user space. Give userspace a handle by which + * to reference it. + */ +int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + union omap_gem_size gsize; + + /* in case someone tries to feed us a completely bogus stride: */ + args->pitch = align_pitch(args->pitch, args->width, args->bpp); + args->size = PAGE_ALIGN(args->pitch * args->height); + + gsize = (union omap_gem_size){ + .bytes = args->size, + }; + + return omap_gem_new_handle(dev, file, gsize, + OMAP_BO_SCANOUT | OMAP_BO_WC, &args->handle); +} + +/** + * omap_gem_dumb_destroy - destroy a dumb buffer + * @file: client file + * @dev: our DRM device + * @handle: the object handle + * + * Destroy a handle that was created via omap_gem_dumb_create. + */ +int omap_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev, + uint32_t handle) +{ + /* No special work needed, drop the reference and see what falls out */ + return drm_gem_handle_delete(file, handle); +} + +/** + * omap_gem_dumb_map - buffer mapping for dumb interface + * @file: our drm client file + * @dev: drm device + * @handle: GEM handle to the object (from dumb_create) + * + * Do the necessary setup to allow the mapping of the frame buffer + * into user memory. We don't have to do much here at the moment. + */ +int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, + uint32_t handle, uint64_t *offset) +{ + struct drm_gem_object *obj; + int ret = 0; + + mutex_lock(&dev->struct_mutex); + + /* GEM does all our handle to object mapping */ + obj = drm_gem_object_lookup(dev, file, handle); + if (obj == NULL) { + ret = -ENOENT; + goto fail; + } + + *offset = omap_gem_mmap_offset(obj); + + drm_gem_object_unreference_unlocked(obj); + +fail: + mutex_unlock(&dev->struct_mutex); + return ret; +} + +/* Get physical address for DMA.. if 'remap' is true, and the buffer is not + * already contiguous, remap it to pin in physically contiguous memory.. (ie. + * map in TILER) + */ +int omap_gem_get_paddr(struct drm_gem_object *obj, + dma_addr_t *paddr, bool remap) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + int ret = 0; + + if (is_shmem(obj)) { + /* TODO: remap to TILER */ + return -ENOMEM; + } + + *paddr = omap_obj->paddr; + + return ret; +} + +/* Release physical address, when DMA is no longer being performed.. this + * could potentially unpin and unmap buffers from TILER + */ +int omap_gem_put_paddr(struct drm_gem_object *obj) +{ + /* do something here when remap to TILER is used.. */ + return 0; +} + +/* acquire pages when needed (for example, for DMA where physically + * contiguous buffer is not required + */ +static int get_pages(struct drm_gem_object *obj, struct page ***pages) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + int ret = 0; + + if (is_shmem(obj) && !omap_obj->pages) { + ret = omap_gem_attach_pages(obj); + if (ret) { + dev_err(obj->dev->dev, "could not attach pages\n"); + return ret; + } + } + + /* TODO: even phys-contig.. we should have a list of pages? */ + *pages = omap_obj->pages; + + return 0; +} + +int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages) +{ + int ret; + mutex_lock(&obj->dev->struct_mutex); + ret = get_pages(obj, pages); + mutex_unlock(&obj->dev->struct_mutex); + return ret; +} + +/* release pages when DMA no longer being performed */ +int omap_gem_put_pages(struct drm_gem_object *obj) +{ + /* do something here if we dynamically attach/detach pages.. at + * least they would no longer need to be pinned if everyone has + * released the pages.. + */ + return 0; +} + +/* Get kernel virtual address for CPU access.. only buffers that are + * allocated contiguously have a kernel virtual address, so this more + * or less only exists for omap_fbdev + */ +void *omap_gem_vaddr(struct drm_gem_object *obj) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + return omap_obj->vaddr; +} + +/* Buffer Synchronization: + */ + +struct omap_gem_sync_waiter { + struct list_head list; + struct omap_gem_object *omap_obj; + enum omap_gem_op op; + uint32_t read_target, write_target; + /* notify called w/ sync_lock held */ + void (*notify)(void *arg); + void *arg; +}; + +/* list of omap_gem_sync_waiter.. the notify fxn gets called back when + * the read and/or write target count is achieved which can call a user + * callback (ex. to kick 3d and/or 2d), wakeup blocked task (prep for + * cpu access), etc. + */ +static LIST_HEAD(waiters); + +static inline bool is_waiting(struct omap_gem_sync_waiter *waiter) +{ + struct omap_gem_object *omap_obj = waiter->omap_obj; + if ((waiter->op & OMAP_GEM_READ) && + (omap_obj->sync->read_complete < waiter->read_target)) + return true; + if ((waiter->op & OMAP_GEM_WRITE) && + (omap_obj->sync->write_complete < waiter->write_target)) + return true; + return false; +} + +/* macro for sync debug.. */ +#define SYNCDBG 0 +#define SYNC(fmt, ...) do { if (SYNCDBG) \ + printk(KERN_ERR "%s:%d: "fmt"\n", \ + __func__, __LINE__, ##__VA_ARGS__); \ + } while (0) + + +static void sync_op_update(void) +{ + struct omap_gem_sync_waiter *waiter, *n; + list_for_each_entry_safe(waiter, n, &waiters, list) { + if (!is_waiting(waiter)) { + list_del(&waiter->list); + SYNC("notify: %p", waiter); + waiter->notify(waiter->arg); + kfree(waiter); + } + } +} + +static inline int sync_op(struct drm_gem_object *obj, + enum omap_gem_op op, bool start) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + int ret = 0; + + spin_lock(&sync_lock); + + if (!omap_obj->sync) { + omap_obj->sync = kzalloc(sizeof(*omap_obj->sync), GFP_ATOMIC); + if (!omap_obj->sync) { + ret = -ENOMEM; + goto unlock; + } + } + + if (start) { + if (op & OMAP_GEM_READ) + omap_obj->sync->read_pending++; + if (op & OMAP_GEM_WRITE) + omap_obj->sync->write_pending++; + } else { + if (op & OMAP_GEM_READ) + omap_obj->sync->read_complete++; + if (op & OMAP_GEM_WRITE) + omap_obj->sync->write_complete++; + sync_op_update(); + } + +unlock: + spin_unlock(&sync_lock); + + return ret; +} + +/* it is a bit lame to handle updates in this sort of polling way, but + * in case of PVR, the GPU can directly update read/write complete + * values, and not really tell us which ones it updated.. this also + * means that sync_lock is not quite sufficient. So we'll need to + * do something a bit better when it comes time to add support for + * separate 2d hw.. + */ +void omap_gem_op_update(void) +{ + spin_lock(&sync_lock); + sync_op_update(); + spin_unlock(&sync_lock); +} + +/* mark the start of read and/or write operation */ +int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op) +{ + return sync_op(obj, op, true); +} + +int omap_gem_op_finish(struct drm_gem_object *obj, enum omap_gem_op op) +{ + return sync_op(obj, op, false); +} + +static DECLARE_WAIT_QUEUE_HEAD(sync_event); + +static void sync_notify(void *arg) +{ + struct task_struct **waiter_task = arg; + *waiter_task = NULL; + wake_up_all(&sync_event); +} + +int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + int ret = 0; + if (omap_obj->sync) { + struct task_struct *waiter_task = current; + struct omap_gem_sync_waiter *waiter = + kzalloc(sizeof(*waiter), GFP_KERNEL); + + if (!waiter) { + return -ENOMEM; + } + + waiter->omap_obj = omap_obj; + waiter->op = op; + waiter->read_target = omap_obj->sync->read_pending; + waiter->write_target = omap_obj->sync->write_pending; + waiter->notify = sync_notify; + waiter->arg = &waiter_task; + + spin_lock(&sync_lock); + if (is_waiting(waiter)) { + SYNC("waited: %p", waiter); + list_add_tail(&waiter->list, &waiters); + spin_unlock(&sync_lock); + ret = wait_event_interruptible(sync_event, + (waiter_task == NULL)); + spin_lock(&sync_lock); + if (waiter_task) { + SYNC("interrupted: %p", waiter); + /* we were interrupted */ + list_del(&waiter->list); + waiter_task = NULL; + } else { + /* freed in sync_op_update() */ + waiter = NULL; + } + } + spin_unlock(&sync_lock); + + if (waiter) { + kfree(waiter); + } + } + return ret; +} + +/* call fxn(arg), either synchronously or asynchronously if the op + * is currently blocked.. fxn() can be called from any context + * + * (TODO for now fxn is called back from whichever context calls + * omap_gem_op_update().. but this could be better defined later + * if needed) + * + * TODO more code in common w/ _sync().. + */ +int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op, + void (*fxn)(void *arg), void *arg) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + if (omap_obj->sync) { + struct omap_gem_sync_waiter *waiter = + kzalloc(sizeof(*waiter), GFP_ATOMIC); + + if (!waiter) { + return -ENOMEM; + } + + waiter->omap_obj = omap_obj; + waiter->op = op; + waiter->read_target = omap_obj->sync->read_pending; + waiter->write_target = omap_obj->sync->write_pending; + waiter->notify = fxn; + waiter->arg = arg; + + spin_lock(&sync_lock); + if (is_waiting(waiter)) { + SYNC("waited: %p", waiter); + list_add_tail(&waiter->list, &waiters); + spin_unlock(&sync_lock); + return 0; + } + + spin_unlock(&sync_lock); + } + + /* no waiting.. */ + fxn(arg); + + return 0; +} + +/* special API so PVR can update the buffer to use a sync-object allocated + * from it's sync-obj heap. Only used for a newly allocated (from PVR's + * perspective) sync-object, so we overwrite the new syncobj w/ values + * from the already allocated syncobj (if there is one) + */ +int omap_gem_set_sync_object(struct drm_gem_object *obj, void *syncobj) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + int ret = 0; + + spin_lock(&sync_lock); + + if ((omap_obj->flags & OMAP_BO_EXT_SYNC) && !syncobj) { + /* clearing a previously set syncobj */ + syncobj = kzalloc(sizeof(*omap_obj->sync), GFP_ATOMIC); + if (!syncobj) { + ret = -ENOMEM; + goto unlock; + } + memcpy(syncobj, omap_obj->sync, sizeof(*omap_obj->sync)); + omap_obj->flags &= ~OMAP_BO_EXT_SYNC; + omap_obj->sync = syncobj; + } else if (syncobj && !(omap_obj->flags & OMAP_BO_EXT_SYNC)) { + /* replacing an existing syncobj */ + if (omap_obj->sync) { + memcpy(syncobj, omap_obj->sync, sizeof(*omap_obj->sync)); + kfree(omap_obj->sync); + } + omap_obj->flags |= OMAP_BO_EXT_SYNC; + omap_obj->sync = syncobj; + } + +unlock: + spin_unlock(&sync_lock); + return ret; +} + +int omap_gem_init_object(struct drm_gem_object *obj) +{ + return -EINVAL; /* unused */ +} + +/* don't call directly.. called from GEM core when it is time to actually + * free the object.. + */ +void omap_gem_free_object(struct drm_gem_object *obj) +{ + struct drm_device *dev = obj->dev; + struct omap_gem_object *omap_obj = to_omap_bo(obj); + + if (obj->map_list.map) { + drm_gem_free_mmap_offset(obj); + } + + /* don't free externally allocated backing memory */ + if (!(omap_obj->flags & OMAP_BO_EXT_MEM)) { + if (omap_obj->pages) { + omap_gem_detach_pages(obj); + } + if (!is_shmem(obj)) { + dma_free_writecombine(dev->dev, obj->size, + omap_obj->vaddr, omap_obj->paddr); + } + } + + /* don't free externally allocated syncobj */ + if (!(omap_obj->flags & OMAP_BO_EXT_SYNC)) { + kfree(omap_obj->sync); + } + + drm_gem_object_release(obj); + + kfree(obj); +} + +/* convenience method to construct a GEM buffer object, and userspace handle */ +int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file, + union omap_gem_size gsize, uint32_t flags, uint32_t *handle) +{ + struct drm_gem_object *obj; + int ret; + + obj = omap_gem_new(dev, gsize, flags); + if (!obj) + return -ENOMEM; + + ret = drm_gem_handle_create(file, obj, handle); + if (ret) { + drm_gem_object_release(obj); + kfree(obj); /* TODO isn't there a dtor to call? just copying i915 */ + return ret; + } + + /* drop reference from allocate - handle holds it now */ + drm_gem_object_unreference_unlocked(obj); + + return 0; +} + +/* GEM buffer object constructor */ +struct drm_gem_object *omap_gem_new(struct drm_device *dev, + union omap_gem_size gsize, uint32_t flags) +{ + struct omap_gem_object *omap_obj; + struct drm_gem_object *obj = NULL; + size_t size; + int ret; + + if (flags & OMAP_BO_TILED) { + /* TODO: not implemented yet */ + goto fail; + } + + size = PAGE_ALIGN(gsize.bytes); + + omap_obj = kzalloc(sizeof(*omap_obj), GFP_KERNEL); + if (!omap_obj) { + dev_err(dev->dev, "could not allocate GEM object\n"); + goto fail; + } + + obj = &omap_obj->base; + + if (flags & OMAP_BO_SCANOUT) { + /* attempt to allocate contiguous memory */ + omap_obj->vaddr = dma_alloc_writecombine(dev->dev, size, + &omap_obj->paddr, GFP_KERNEL); + if (omap_obj->vaddr) { + flags |= OMAP_BO_DMA; + } + } + + omap_obj->flags = flags; + + if (flags & (OMAP_BO_DMA|OMAP_BO_EXT_MEM)) { + ret = drm_gem_private_object_init(dev, obj, size); + } else { + ret = drm_gem_object_init(dev, obj, size); + } + + if (ret) { + goto fail; + } + + return obj; + +fail: + if (obj) { + omap_gem_free_object(obj); + } + return NULL; +} diff --git a/drivers/staging/omapdrm/omap_gem_helpers.c b/drivers/staging/omapdrm/omap_gem_helpers.c new file mode 100644 index 0000000..1cfc12d --- /dev/null +++ b/drivers/staging/omapdrm/omap_gem_helpers.c @@ -0,0 +1,114 @@ +/* + * drivers/staging/omapdrm/omap_gem_helpers.c + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob.clark@linaro.org> + * + * 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/>. + */ + +/* temporary copy of drm_gem_{get,put}_pages() until the + * "drm/gem: add functions to get/put pages" patch is merged.. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/shmem_fs.h> + +#include <drm/drmP.h> + +/** + * drm_gem_get_pages - helper to allocate backing pages for a GEM object + * @obj: obj in question + * @gfpmask: gfp mask of requested pages + */ +struct page ** _drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask) +{ + struct inode *inode; + struct address_space *mapping; + struct page *p, **pages; + int i, npages; + + /* This is the shared memory object that backs the GEM resource */ + inode = obj->filp->f_path.dentry->d_inode; + mapping = inode->i_mapping; + + npages = obj->size >> PAGE_SHIFT; + + pages = drm_malloc_ab(npages, sizeof(struct page *)); + if (pages == NULL) + return ERR_PTR(-ENOMEM); + + gfpmask |= mapping_gfp_mask(mapping); + + for (i = 0; i < npages; i++) { + p = shmem_read_mapping_page_gfp(mapping, i, gfpmask); + if (IS_ERR(p)) + goto fail; + pages[i] = p; + + /* There is a hypothetical issue w/ drivers that require + * buffer memory in the low 4GB.. if the pages are un- + * pinned, and swapped out, they can end up swapped back + * in above 4GB. If pages are already in memory, then + * shmem_read_mapping_page_gfp will ignore the gfpmask, + * even if the already in-memory page disobeys the mask. + * + * It is only a theoretical issue today, because none of + * the devices with this limitation can be populated with + * enough memory to trigger the issue. But this BUG_ON() + * is here as a reminder in case the problem with + * shmem_read_mapping_page_gfp() isn't solved by the time + * it does become a real issue. + * + * See this thread: http://lkml.org/lkml/2011/7/11/238 + */ + BUG_ON((gfpmask & __GFP_DMA32) && + (page_to_pfn(p) >= 0x00100000UL)); + } + + return pages; + +fail: + while (i--) { + page_cache_release(pages[i]); + } + drm_free_large(pages); + return ERR_PTR(PTR_ERR(p)); +} + +/** + * drm_gem_put_pages - helper to free backing pages for a GEM object + * @obj: obj in question + * @pages: pages to free + */ +void _drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, + bool dirty, bool accessed) +{ + int i, npages; + + npages = obj->size >> PAGE_SHIFT; + + for (i = 0; i < npages; i++) { + if (dirty) + set_page_dirty(pages[i]); + + if (accessed) + mark_page_accessed(pages[i]); + + /* Undo the reference we took when populating the table */ + page_cache_release(pages[i]); + } + + drm_free_large(pages); +} diff --git a/drivers/staging/omapdrm/omap_priv.h b/drivers/staging/omapdrm/omap_priv.h new file mode 100644 index 0000000..f482d1e --- /dev/null +++ b/drivers/staging/omapdrm/omap_priv.h @@ -0,0 +1,42 @@ +/* + * include/drm/omap_priv.h + * + * Copyright (C) 2011 Texas Instruments + * Author: Rob Clark <rob@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __OMAP_PRIV_H__ +#define __OMAP_PRIV_H__ + +/* Non-userspace facing APIs + */ + +/* optional platform data to configure the default configuration of which + * pipes/overlays/CRTCs are used.. if this is not provided, then instead the + * first CONFIG_DRM_OMAP_NUM_CRTCS are used, and they are each connected to + * one manager, with priority given to managers that are connected to + * detected devices. This should be a good default behavior for most cases, + * but yet there still might be times when you wish to do something different. + */ +struct omap_drm_platform_data { + int ovl_cnt; + const int *ovl_ids; + int mgr_cnt; + const int *mgr_ids; + int dev_cnt; + const char **dev_names; +}; + +#endif /* __OMAP_DRM_H__ */ diff --git a/drivers/video/omap2/omapfb/Kconfig b/drivers/video/omap2/omapfb/Kconfig index 83d3fe7..4ea17dc 100644 --- a/drivers/video/omap2/omapfb/Kconfig +++ b/drivers/video/omap2/omapfb/Kconfig @@ -1,6 +1,6 @@ menuconfig FB_OMAP2 tristate "OMAP2+ frame buffer support" - depends on FB && OMAP2_DSS + depends on FB && OMAP2_DSS && !DRM_OMAP select OMAP2_VRAM select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3 |
