staging: add omapdrm DRM/KMS driver for TI OMAP platforms
A DRM display driver for TI OMAP platform. Similar to omapfb (fbdev)
and omap_vout (v4l2 display) drivers in the past, this driver uses the
DSS2 driver to access the display hardware, including support for
HDMI, DVI, and various types of LCD panels. And it implements GEM
support for buffer allocation (for KMS as well as offscreen buffers
used by the xf86-video-omap userspace xorg driver).
The driver maps CRTCs to overlays, encoders to overlay-managers, and
connectors to dssdev's. Note that this arrangement might change slightly
when support for drm_plane overlays is added.
For GEM support, non-scanout buffers are using the shmem backed pages
provided by GEM core (In drm_gem_object_init()). In the case of scanout
buffers, which need to be physically contiguous, those are allocated
with CMA and use drm_gem_private_object_init().
See userspace xorg driver:
git://github.com/robclark/xf86-video-omap.git
Refer to this link for CMA (Continuous Memory Allocator):
http://lkml.org/lkml/2011/8/19/302
Links to previous versions of the patch:
v1: http://lwn.net/Articles/458137/
v2: http://patches.linaro.org/4156/
v3: http://patches.linaro.org/4688/
v4: http://patches.linaro.org/4791/
History:
v5: move headers from include/drm at Greg KH's request, minor rebasing
on 3.2-rc1, pull in private copies of drm_gem_{get,put}_pages()
because "drm/gem: add functions to get/put pages" patch is not
merged yet
v4: bit of rework of encoder/connector _dpms() code, modeset_init()
rework to not use nested functions, update TODO.txt
v3: minor cleanups, improved error handling for dev_load(), some minor
API changes that will be needed later for tiled buffer support
v2: replace omap_vram with CMA for scanout buffer allocation, remove
unneeded functions, use dma_addr_t for physical addresses, error
handling cleanup, refactor attach/detach pages into common drm
functions, split non-userspace-facing API into omap_priv.h, remove
plugin API
v1: original
Signed-off-by: Rob Clark <rob@ti.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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");