diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 0f1e5ca99448..985937a9f3a6 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 6f886bd9e782..ba3fb8d7bf64 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-$(CONFIG_DRM_OMAP) += omapdrm/ diff --git a/drivers/staging/omapdrm/Kconfig b/drivers/staging/omapdrm/Kconfig new file mode 100644 index 000000000000..81a7cba4a0c5 --- /dev/null +++ b/drivers/staging/omapdrm/Kconfig @@ -0,0 +1,25 @@ + +config DRM_OMAP + tristate "OMAP DRM" + depends on DRM && !CONFIG_FB_OMAP2 + depends on ARCH_OMAP2PLUS + select DRM_KMS_HELPER + select OMAP2_DSS + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select FB_SYS_FOPS + default n + help + DRM display driver for OMAP2/3/4 based boards. + +config DRM_OMAP_NUM_CRTCS + int "Number of CRTCs" + range 1 10 + default 1 if ARCH_OMAP2 || ARCH_OMAP3 + default 2 if ARCH_OMAP4 + depends on DRM_OMAP + help + Select the number of video overlays which can be used as framebuffers. + The remaining overlays are reserved for video. + diff --git a/drivers/staging/omapdrm/Makefile b/drivers/staging/omapdrm/Makefile new file mode 100644 index 000000000000..4aa9a2f34d4a --- /dev/null +++ b/drivers/staging/omapdrm/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for the drm device driver. This driver provides support for the +# Direct Rendering Infrastructure (DRI) +# + +ccflags-y := -Iinclude/drm -Werror +omapdrm-y := omap_drv.o omap_crtc.o omap_encoder.o omap_connector.o omap_fb.o omap_fbdev.o omap_gem.o + +# temporary: +omapdrm-y += omap_gem_helpers.o + +obj-$(CONFIG_DRM_OMAP) += omapdrm.o diff --git a/drivers/staging/omapdrm/TODO b/drivers/staging/omapdrm/TODO new file mode 100644 index 000000000000..17781c954a83 --- /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 000000000000..5e2856c0e0bb --- /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 + * + * 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 . + */ + +#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 000000000000..fd09bcfab858 --- /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 + * + * 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 . + */ + +#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 000000000000..40167dd97589 --- /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 + * + * 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 . + */ + +#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 000000000000..cee005043dbd --- /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 + * + * 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 . + */ + +#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 "); +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 000000000000..c8f2752a4f18 --- /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 + * + * 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 . + */ + +#ifndef __OMAP_DRV_H__ +#define __OMAP_DRV_H__ + +#include