struct drm_device *drm;
struct device *dev;
struct imx_drm_crtc *crtc[MAX_CRTC];
- struct list_head encoder_list;
- struct list_head connector_list;
struct mutex mutex;
int pipes;
struct drm_fbdev_cma *fbhelper;
int mux_id;
};
-struct imx_drm_encoder {
- struct drm_encoder *encoder;
- struct list_head list;
- struct module *owner;
- struct list_head possible_crtcs;
-};
-
-struct imx_drm_connector {
- struct drm_connector *connector;
- struct list_head list;
- struct module *owner;
-};
-
static int legacyfb_depth = 16;
module_param(legacyfb_depth, int, 0444);
-static void imx_drm_device_put(void);
-
int imx_drm_crtc_id(struct imx_drm_crtc *crtc)
{
return crtc->pipe;
component_unbind_all(drm->dev, drm);
- imx_drm_device_put();
-
drm_vblank_cleanup(drm);
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
return imx_drm_device;
}
-static struct drm_device *imx_drm_device_get(void)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct imx_drm_encoder *enc;
- struct imx_drm_connector *con;
-
- list_for_each_entry(enc, &imxdrm->encoder_list, list) {
- if (!try_module_get(enc->owner)) {
- dev_err(imxdrm->dev, "could not get module %s\n",
- module_name(enc->owner));
- goto unwind_enc;
- }
- }
-
- list_for_each_entry(con, &imxdrm->connector_list, list) {
- if (!try_module_get(con->owner)) {
- dev_err(imxdrm->dev, "could not get module %s\n",
- module_name(con->owner));
- goto unwind_con;
- }
- }
-
- return imxdrm->drm;
-
-unwind_con:
- list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list)
- module_put(con->owner);
-unwind_enc:
- list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list)
- module_put(enc->owner);
-
- mutex_unlock(&imxdrm->mutex);
-
- return NULL;
-
-}
-
-static void imx_drm_device_put(void)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct imx_drm_encoder *enc;
- struct imx_drm_connector *con;
-
- mutex_lock(&imxdrm->mutex);
-
- list_for_each_entry(con, &imxdrm->connector_list, list)
- module_put(con->owner);
-
- list_for_each_entry(enc, &imxdrm->encoder_list, list)
- module_put(enc->owner);
-
- mutex_unlock(&imxdrm->mutex);
-}
-
-static int drm_mode_group_reinit(struct drm_device *dev)
-{
- struct drm_mode_group *group = &dev->primary->mode_group;
- uint32_t *id_list = group->id_list;
- int ret;
-
- ret = drm_mode_group_init_legacy_group(dev, group);
- if (ret < 0)
- return ret;
-
- kfree(id_list);
- return 0;
-}
-
-/*
- * register an encoder to the drm core
- */
-static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
-
- INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs);
-
- drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder,
- imx_drm_encoder->encoder->funcs,
- imx_drm_encoder->encoder->encoder_type);
-
- drm_mode_group_reinit(imxdrm->drm);
-
- return 0;
-}
-
-/*
- * unregister an encoder from the drm core
- */
-static void imx_drm_encoder_unregister(struct imx_drm_encoder
- *imx_drm_encoder)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
-
- drm_encoder_cleanup(imx_drm_encoder->encoder);
-
- drm_mode_group_reinit(imxdrm->drm);
-}
-
-/*
- * register a connector to the drm core
- */
-static int imx_drm_connector_register(
- struct imx_drm_connector *imx_drm_connector)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
-
- drm_connector_init(imxdrm->drm, imx_drm_connector->connector,
- imx_drm_connector->connector->funcs,
- imx_drm_connector->connector->connector_type);
- drm_mode_group_reinit(imxdrm->drm);
-
- return 0;
-}
-
-/*
- * unregister a connector from the drm core
- */
-static void imx_drm_connector_unregister(
- struct imx_drm_connector *imx_drm_connector)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
-
- drm_sysfs_connector_remove(imx_drm_connector->connector);
- drm_connector_cleanup(imx_drm_connector->connector);
-
- drm_mode_group_reinit(imxdrm->drm);
-}
-
void imx_drm_connector_destroy(struct drm_connector *connector)
{
drm_sysfs_connector_remove(connector);
*/
drm->vblank_disable_allowed = true;
- if (!imx_drm_device_get()) {
- ret = -EINVAL;
- goto err_vblank;
- }
-
platform_set_drvdata(drm->platformdev, drm);
+
mutex_unlock(&imxdrm->mutex);
/* Now try and bind all our sub-components */
component_unbind_all(drm->dev, drm);
err_relock:
mutex_lock(&imxdrm->mutex);
-err_vblank:
drm_vblank_cleanup(drm);
err_kms:
drm_kms_helper_poll_fini(drm);
return ret;
}
-static void imx_drm_update_possible_crtcs(void)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct imx_drm_crtc *imx_drm_crtc;
- struct imx_drm_encoder *enc;
- struct crtc_cookie *cookie;
-
- list_for_each_entry(enc, &imxdrm->encoder_list, list) {
- u32 possible_crtcs = 0;
-
- list_for_each_entry(cookie, &enc->possible_crtcs, list) {
- list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) {
- if (imx_drm_crtc->cookie.cookie == cookie->cookie &&
- imx_drm_crtc->cookie.id == cookie->id) {
- possible_crtcs |= 1 << imx_drm_crtc->pipe;
- }
- }
- }
- enc->encoder->possible_crtcs = possible_crtcs;
- enc->encoder->possible_clones = possible_crtcs;
- }
-}
-
/*
* imx_drm_add_crtc - add a new crtc
*
drm_crtc_init(drm, crtc,
imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs);
- imx_drm_update_possible_crtcs();
-
mutex_unlock(&imxdrm->mutex);
return 0;
}
EXPORT_SYMBOL_GPL(imx_drm_remove_crtc);
-/*
- * imx_drm_add_encoder - add a new encoder
- */
-int imx_drm_add_encoder(struct drm_encoder *encoder,
- struct imx_drm_encoder **newenc, struct module *owner)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct imx_drm_encoder *imx_drm_encoder;
- int ret;
-
- mutex_lock(&imxdrm->mutex);
-
- if (imxdrm->drm->open_count) {
- ret = -EBUSY;
- goto err_busy;
- }
-
- imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL);
- if (!imx_drm_encoder) {
- ret = -ENOMEM;
- goto err_alloc;
- }
-
- imx_drm_encoder->encoder = encoder;
- imx_drm_encoder->owner = owner;
-
- ret = imx_drm_encoder_register(imx_drm_encoder);
- if (ret) {
- ret = -ENOMEM;
- goto err_register;
- }
-
- list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list);
-
- *newenc = imx_drm_encoder;
-
- mutex_unlock(&imxdrm->mutex);
-
- return 0;
-
-err_register:
- kfree(imx_drm_encoder);
-err_alloc:
-err_busy:
- mutex_unlock(&imxdrm->mutex);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(imx_drm_add_encoder);
-
/*
* Find the DRM CRTC possible mask for the device node cookie/id.
*
}
EXPORT_SYMBOL_GPL(imx_drm_encoder_parse_of);
-int imx_drm_encoder_add_possible_crtcs(
- struct imx_drm_encoder *imx_drm_encoder,
- struct device_node *np)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct of_phandle_args args;
- struct crtc_cookie *c;
- int ret = 0;
- int i;
-
- if (!list_empty(&imx_drm_encoder->possible_crtcs))
- return -EBUSY;
-
- for (i = 0; !ret; i++) {
- ret = of_parse_phandle_with_args(np, "crtcs",
- "#crtc-cells", i, &args);
- if (ret < 0)
- break;
-
- c = kzalloc(sizeof(*c), GFP_KERNEL);
- if (!c) {
- of_node_put(args.np);
- return -ENOMEM;
- }
-
- c->cookie = args.np;
- c->id = args.args_count > 0 ? args.args[0] : 0;
-
- of_node_put(args.np);
-
- mutex_lock(&imxdrm->mutex);
-
- list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs);
-
- mutex_unlock(&imxdrm->mutex);
- }
-
- imx_drm_update_possible_crtcs();
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs);
-
int imx_drm_encoder_get_mux_id(struct drm_encoder *encoder)
{
struct imx_drm_crtc *imx_crtc = imx_drm_find_crtc(encoder->crtc);
}
EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id);
-/*
- * imx_drm_remove_encoder - remove an encoder
- */
-int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct crtc_cookie *c, *tmp;
-
- mutex_lock(&imxdrm->mutex);
-
- imx_drm_encoder_unregister(imx_drm_encoder);
-
- list_del(&imx_drm_encoder->list);
-
- list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs,
- list)
- kfree(c);
-
- mutex_unlock(&imxdrm->mutex);
-
- kfree(imx_drm_encoder);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(imx_drm_remove_encoder);
-
-/*
- * imx_drm_add_connector - add a connector
- */
-int imx_drm_add_connector(struct drm_connector *connector,
- struct imx_drm_connector **new_con,
- struct module *owner)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
- struct imx_drm_connector *imx_drm_connector;
- int ret;
-
- mutex_lock(&imxdrm->mutex);
-
- if (imxdrm->drm->open_count) {
- ret = -EBUSY;
- goto err_busy;
- }
-
- imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL);
- if (!imx_drm_connector) {
- ret = -ENOMEM;
- goto err_alloc;
- }
-
- imx_drm_connector->connector = connector;
- imx_drm_connector->owner = owner;
-
- ret = imx_drm_connector_register(imx_drm_connector);
- if (ret)
- goto err_register;
-
- list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list);
-
- *new_con = imx_drm_connector;
-
- mutex_unlock(&imxdrm->mutex);
-
- return 0;
-
-err_register:
- kfree(imx_drm_connector);
-err_alloc:
-err_busy:
- mutex_unlock(&imxdrm->mutex);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(imx_drm_add_connector);
-
-/*
- * imx_drm_remove_connector - remove a connector
- */
-int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector)
-{
- struct imx_drm_device *imxdrm = __imx_drm_device();
-
- mutex_lock(&imxdrm->mutex);
-
- imx_drm_connector_unregister(imx_drm_connector);
-
- list_del(&imx_drm_connector->list);
-
- mutex_unlock(&imxdrm->mutex);
-
- kfree(imx_drm_connector);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(imx_drm_remove_connector);
-
static const struct drm_ioctl_desc imx_drm_ioctls[] = {
/* none so far */
};
return -ENOMEM;
mutex_init(&imx_drm_device->mutex);
- INIT_LIST_HEAD(&imx_drm_device->connector_list);
- INIT_LIST_HEAD(&imx_drm_device->encoder_list);
ret = platform_driver_register(&imx_drm_pdrv);
if (ret)
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