Hi Rob, On Fri, Jan 30, 2015 at 9:07 PM, Rob Clark <robdclark at gmail.com> wrote: > On Tue, Jan 20, 2015 at 11:38 AM, Ajay Kumar <ajaykumar.rs at samsung.com> > wrote: >> Currently, third party bridge drivers(ptn3460) are dependent >> on the corresponding encoder driver init, since bridge driver >> needs a drm_device pointer to finish drm initializations. >> The encoder driver passes the drm_device pointer to the >> bridge driver. Because of this dependency, third party drivers >> like ptn3460 doesn't adhere to the driver model. >> >> In this patch, we reframe the bridge registration framework >> so that bridge initialization is split into 2 steps, and >> bridge registration happens independent of drm flow: >> --Step 1: gather all the bridge settings independent of drm and >> add the bridge onto a global list of bridges. >> --Step 2: when the encoder driver is probed, call drm_bridge_attach >> for the corresponding bridge so that the bridge receives >> drm_device pointer and continues with connector and other >> drm initializations. >> >> The old set of bridge helpers are removed, and a set of new helpers >> are added to accomplish the 2 step initialization. >> >> The bridge devices register themselves onto global list of bridges >> when they get probed by calling "drm_bridge_add". >> >> The parent encoder driver waits till the bridge is available >> in the lookup table(by calling "of_drm_find_bridge") and then >> continues with its initialization. >> >> The encoder driver should also call "drm_bridge_attach" to pass >> on the drm_device to the bridge object. >> >> drm_bridge_attach inturn calls "bridge->funcs->attach" so that >> bridge can continue with drm related initializations. > > ok, so I probably should have had a closer look at this before it > landed in drm-next, so if it is too late to revert (and deal w/ > untangling subsequent patches that depend on this) some of these > issues we'll just have to fix with follow-on patches. > > 1) needs headerdoc for new fxns in drm_bridge.c, and needs to be added > in drm.tmpl Ohh, I totally forgot. I will do this. Just point me to some recent patch which updates docbook. > 2) as far as I can tell, the new approach to cleaning up bridge > objects is to just let them leak !?! I just checked. Only MSM hdmi_bridge is leaking, and this is because it doesn't use devm_kzalloc. All other bridges use devm_kzalloc, and hence that memory is automatically freed. For MSM HDMI, we need to find a place to call hdmi_bridge_destroy.
> I'll also need to update the new bridge in the msm edp code.. > although that isn't such a big deal if I knew how this was *supposed* > to work.. You just need to convert drm_bridge_init to drm_bridge_attach, and remove destroy callback. Refer this: http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-next&id=b5217bf4692218d202d3d2cd772864fa1e10be4d Regards, Ajay Kumar > since what is there now at least doesn't look right.. > > BR, > -R > > > >> Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com> >> Acked-by: Inki Dae <inki.dae at samsung.com> >> Tested-by: Rahul Sharma <rahul.sharma at samsung.com> >> Tested-by: Javier Martinez Canillas <javier.martinez at collabora.co.uk> >> Tested-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk> >> Tested-by: Sjoerd Simons <sjoerd.simons at collabora.co.uk> >> --- >> drivers/gpu/drm/Makefile | 2 +- >> drivers/gpu/drm/bridge/ptn3460.c | 27 +++++----- >> drivers/gpu/drm/drm_bridge.c | 91 >> ++++++++++++++++++++++++++++++++ >> drivers/gpu/drm/drm_crtc.c | 67 ----------------------- >> drivers/gpu/drm/msm/hdmi/hdmi.c | 4 +- >> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 + >> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 6 +-- >> drivers/gpu/drm/sti/sti_hda.c | 10 +--- >> drivers/gpu/drm/sti/sti_hdmi.c | 10 +--- >> include/drm/bridge/ptn3460.h | 8 +++ >> include/drm/drm_crtc.h | 26 ++++----- >> 11 files changed, 133 insertions(+), 119 deletions(-) >> create mode 100644 drivers/gpu/drm/drm_bridge.c >> >> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile >> index e620807..c83ef2d 100644 >> --- a/drivers/gpu/drm/Makefile >> +++ b/drivers/gpu/drm/Makefile >> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \ >> drm_info.o drm_debugfs.o drm_encoder_slave.o \ >> drm_trace_points.o drm_global.o drm_prime.o \ >> drm_rect.o drm_vma_manager.o drm_flip_work.o \ >> - drm_modeset_lock.o drm_atomic.o >> + drm_modeset_lock.o drm_atomic.o drm_bridge.o >> >> drm-$(CONFIG_COMPAT) += drm_ioc32.o >> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o >> diff --git a/drivers/gpu/drm/bridge/ptn3460.c >> b/drivers/gpu/drm/bridge/ptn3460.c >> index a2ddc8d..4a818c1 100644 >> --- a/drivers/gpu/drm/bridge/ptn3460.c >> +++ b/drivers/gpu/drm/bridge/ptn3460.c >> @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge >> *bridge) >> { >> } >> >> -static void ptn3460_bridge_destroy(struct drm_bridge *bridge) >> -{ >> - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge); >> - >> - drm_bridge_cleanup(bridge); >> - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) >> - gpio_free(ptn_bridge->gpio_pd_n); >> - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) >> - gpio_free(ptn_bridge->gpio_rst_n); >> - /* Nothing else to free, we've got devm allocated memory */ >> -} >> - >> static struct drm_bridge_funcs ptn3460_bridge_funcs = { >> .pre_enable = ptn3460_pre_enable, >> .enable = ptn3460_enable, >> .disable = ptn3460_disable, >> .post_disable = ptn3460_post_disable, >> - .destroy = ptn3460_bridge_destroy, >> }; >> >> static int ptn3460_get_modes(struct drm_connector *connector) >> @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct >> drm_encoder *encoder, >> } >> >> ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs; >> - ret = drm_bridge_init(dev, &ptn_bridge->bridge); >> + ret = drm_bridge_attach(dev, &ptn_bridge->bridge); >> if (ret) { >> DRM_ERROR("Failed to initialize bridge with drm\n"); >> goto err; >> @@ -343,3 +330,15 @@ err: >> return ret; >> } >> EXPORT_SYMBOL(ptn3460_init); >> + >> +void ptn3460_destroy(struct drm_bridge *bridge) >> +{ >> + struct ptn3460_bridge *ptn_bridge = bridge->driver_private; >> + >> + if (gpio_is_valid(ptn_bridge->gpio_pd_n)) >> + gpio_free(ptn_bridge->gpio_pd_n); >> + if (gpio_is_valid(ptn_bridge->gpio_rst_n)) >> + gpio_free(ptn_bridge->gpio_rst_n); >> + /* Nothing else to free, we've got devm allocated memory */ >> +} >> +EXPORT_SYMBOL(ptn3460_destroy); >> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c >> new file mode 100644 >> index 0000000..d1187e5 >> --- /dev/null >> +++ b/drivers/gpu/drm/drm_bridge.c >> @@ -0,0 +1,91 @@ >> +/* >> + * Copyright (c) 2014 Samsung Electronics Co., Ltd >> + * >> + * Permission is hereby granted, free of charge, to any person obtaining a >> + * copy of this software and associated documentation files (the >> "Software"), >> + * to deal in the Software without restriction, including without limitation >> + * the rights to use, copy, modify, merge, publish, distribute, sub license, >> + * and/or sell copies of the Software, and to permit persons to whom the >> + * Software is furnished to do so, subject to the following conditions: >> + * >> + * The above copyright notice and this permission notice (including the >> + * next paragraph) shall be included in all copies or substantial portions >> + * of the Software. >> + * >> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS >> OR >> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, >> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL >> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR >> OTHER >> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING >> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER >> + * DEALINGS IN THE SOFTWARE. >> + */ >> + >> +#include <linux/err.h> >> +#include <linux/module.h> >> + >> +#include <drm/drm_crtc.h> >> + >> +#include "drm/drmP.h" >> + >> +static DEFINE_MUTEX(bridge_lock); >> +static LIST_HEAD(bridge_list); >> + >> +int drm_bridge_add(struct drm_bridge *bridge) >> +{ >> + mutex_lock(&bridge_lock); >> + list_add_tail(&bridge->list, &bridge_list); >> + mutex_unlock(&bridge_lock); >> + >> + return 0; >> +} >> +EXPORT_SYMBOL(drm_bridge_add); >> + >> +void drm_bridge_remove(struct drm_bridge *bridge) >> +{ >> + mutex_lock(&bridge_lock); >> + list_del_init(&bridge->list); >> + mutex_unlock(&bridge_lock); >> +} >> +EXPORT_SYMBOL(drm_bridge_remove); >> + >> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge >> *bridge) >> +{ >> + if (!dev || !bridge) >> + return -EINVAL; >> + >> + if (bridge->dev) >> + return -EBUSY; >> + >> + bridge->dev = dev; >> + >> + if (bridge->funcs->attach) >> + return bridge->funcs->attach(bridge); >> + >> + return 0; >> +} >> +EXPORT_SYMBOL(drm_bridge_attach); >> + >> +#ifdef CONFIG_OF >> +struct drm_bridge *of_drm_find_bridge(struct device_node *np) >> +{ >> + struct drm_bridge *bridge; >> + >> + mutex_lock(&bridge_lock); >> + >> + list_for_each_entry(bridge, &bridge_list, list) { >> + if (bridge->of_node == np) { >> + mutex_unlock(&bridge_lock); >> + return bridge; >> + } >> + } >> + >> + mutex_unlock(&bridge_lock); >> + return NULL; >> +} >> +EXPORT_SYMBOL(of_drm_find_bridge); >> +#endif >> + >> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs at samsung.com>"); >> +MODULE_DESCRIPTION("DRM bridge infrastructure"); >> +MODULE_LICENSE("GPL and additional rights"); >> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c >> index af57103..bb8e31e 100644 >> --- a/drivers/gpu/drm/drm_crtc.c >> +++ b/drivers/gpu/drm/drm_crtc.c >> @@ -1028,58 +1028,6 @@ void drm_connector_unplug_all(struct drm_device *dev) >> EXPORT_SYMBOL(drm_connector_unplug_all); >> >> /** >> - * drm_bridge_init - initialize a drm transcoder/bridge >> - * @dev: drm device >> - * @bridge: transcoder/bridge to set up >> - * >> - * Initialises a preallocated bridge. Bridges should be >> - * subclassed as part of driver connector objects. >> - * >> - * Returns: >> - * Zero on success, error code on failure. >> - */ >> -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge) >> -{ >> - int ret; >> - >> - drm_modeset_lock_all(dev); >> - >> - ret = drm_mode_object_get(dev, &bridge->base, >> DRM_MODE_OBJECT_BRIDGE); >> - if (ret) >> - goto out; >> - >> - bridge->dev = dev; >> - >> - list_add_tail(&bridge->head, &dev->mode_config.bridge_list); >> - dev->mode_config.num_bridge++; >> - >> - out: >> - drm_modeset_unlock_all(dev); >> - return ret; >> -} >> -EXPORT_SYMBOL(drm_bridge_init); >> - >> -/** >> - * drm_bridge_cleanup - cleans up an initialised bridge >> - * @bridge: bridge to cleanup >> - * >> - * Cleans up the bridge but doesn't free the object. >> - */ >> -void drm_bridge_cleanup(struct drm_bridge *bridge) >> -{ >> - struct drm_device *dev = bridge->dev; >> - >> - drm_modeset_lock_all(dev); >> - drm_mode_object_put(dev, &bridge->base); >> - list_del(&bridge->head); >> - dev->mode_config.num_bridge--; >> - drm_modeset_unlock_all(dev); >> - >> - memset(bridge, 0, sizeof(*bridge)); >> -} >> -EXPORT_SYMBOL(drm_bridge_cleanup); >> - >> -/** >> * drm_encoder_init - Init a preallocated encoder >> * @dev: drm device >> * @encoder: the encoder to init >> @@ -1594,7 +1542,6 @@ static int drm_mode_group_init(struct drm_device *dev, >> struct drm_mode_group *gr >> total_objects += dev->mode_config.num_crtc; >> total_objects += dev->mode_config.num_connector; >> total_objects += dev->mode_config.num_encoder; >> - total_objects += dev->mode_config.num_bridge; >> >> group->id_list = kzalloc(total_objects * sizeof(uint32_t), >> GFP_KERNEL); >> if (!group->id_list) >> @@ -1603,7 +1550,6 @@ static int drm_mode_group_init(struct drm_device *dev, >> struct drm_mode_group *gr >> group->num_crtcs = 0; >> group->num_connectors = 0; >> group->num_encoders = 0; >> - group->num_bridges = 0; >> return 0; >> } >> >> @@ -1623,7 +1569,6 @@ int drm_mode_group_init_legacy_group(struct drm_device >> *dev, >> struct drm_crtc *crtc; >> struct drm_encoder *encoder; >> struct drm_connector *connector; >> - struct drm_bridge *bridge; >> int ret; >> >> if ((ret = drm_mode_group_init(dev, group))) >> @@ -1640,11 +1585,6 @@ int drm_mode_group_init_legacy_group(struct >> drm_device *dev, >> group->id_list[group->num_crtcs + group->num_encoders + >> group->num_connectors++] = connector->base.id; >> >> - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head) >> - group->id_list[group->num_crtcs + group->num_encoders + >> - group->num_connectors + group->num_bridges++] >> = >> - bridge->base.id; >> - >> return 0; >> } >> EXPORT_SYMBOL(drm_mode_group_init_legacy_group); >> @@ -5208,7 +5148,6 @@ void drm_mode_config_init(struct drm_device *dev) >> INIT_LIST_HEAD(&dev->mode_config.fb_list); >> INIT_LIST_HEAD(&dev->mode_config.crtc_list); >> INIT_LIST_HEAD(&dev->mode_config.connector_list); >> - INIT_LIST_HEAD(&dev->mode_config.bridge_list); >> INIT_LIST_HEAD(&dev->mode_config.encoder_list); >> INIT_LIST_HEAD(&dev->mode_config.property_list); >> INIT_LIST_HEAD(&dev->mode_config.property_blob_list); >> @@ -5249,7 +5188,6 @@ void drm_mode_config_cleanup(struct drm_device *dev) >> struct drm_connector *connector, *ot; >> struct drm_crtc *crtc, *ct; >> struct drm_encoder *encoder, *enct; >> - struct drm_bridge *bridge, *brt; >> struct drm_framebuffer *fb, *fbt; >> struct drm_property *property, *pt; >> struct drm_property_blob *blob, *bt; >> @@ -5260,11 +5198,6 @@ void drm_mode_config_cleanup(struct drm_device *dev) >> encoder->funcs->destroy(encoder); >> } >> >> - list_for_each_entry_safe(bridge, brt, >> - &dev->mode_config.bridge_list, head) { >> - bridge->funcs->destroy(bridge); >> - } >> - >> list_for_each_entry_safe(connector, ot, >> &dev->mode_config.connector_list, head) { >> connector->funcs->destroy(connector); >> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c >> b/drivers/gpu/drm/msm/hdmi/hdmi.c >> index 062c687..95f7b8d 100644 >> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c >> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c >> @@ -247,9 +247,9 @@ int hdmi_modeset_init(struct hdmi *hdmi, >> return 0; >> >> fail: >> - /* bridge/connector are normally destroyed by drm: */ >> + /* bridge is normally destroyed by drm: */ >> if (hdmi->bridge) { >> - hdmi->bridge->funcs->destroy(hdmi->bridge); >> + hdmi_bridge_destroy(hdmi->bridge); >> hdmi->bridge = NULL; >> } >> if (hdmi->connector) { >> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h >> b/drivers/gpu/drm/msm/hdmi/hdmi.h >> index 43e654f..4d4cad4 100644 >> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h >> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h >> @@ -146,6 +146,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int >> rate); >> */ >> >> struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi); >> +void hdmi_bridge_destroy(struct drm_bridge *bridge); >> >> /* >> * hdmi connector: >> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c >> b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c >> index 52ed2b5..d6f8d58 100644 >> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c >> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c >> @@ -23,10 +23,9 @@ struct hdmi_bridge { >> }; >> #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) >> >> -static void hdmi_bridge_destroy(struct drm_bridge *bridge) >> +void hdmi_bridge_destroy(struct drm_bridge *bridge) >> { >> struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); >> - drm_bridge_cleanup(bridge); >> kfree(hdmi_bridge); >> } >> >> @@ -200,7 +199,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = >> { >> .disable = hdmi_bridge_disable, >> .post_disable = hdmi_bridge_post_disable, >> .mode_set = hdmi_bridge_mode_set, >> - .destroy = hdmi_bridge_destroy, >> }; >> >> >> @@ -222,7 +220,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi) >> bridge = &hdmi_bridge->base; >> bridge->funcs = &hdmi_bridge_funcs; >> >> - drm_bridge_init(hdmi->dev, bridge); >> + drm_bridge_attach(hdmi->dev, bridge); >> >> return bridge; >> >> diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c >> index 6cf145d..a9bbb08 100644 >> --- a/drivers/gpu/drm/sti/sti_hda.c >> +++ b/drivers/gpu/drm/sti/sti_hda.c >> @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge >> *bridge) >> /* do nothing */ >> } >> >> -static void sti_hda_brigde_destroy(struct drm_bridge *bridge) >> -{ >> - drm_bridge_cleanup(bridge); >> - kfree(bridge); >> -} >> - >> static const struct drm_bridge_funcs sti_hda_bridge_funcs = { >> .pre_enable = sti_hda_pre_enable, >> .enable = sti_hda_bridge_nope, >> .disable = sti_hda_disable, >> .post_disable = sti_hda_bridge_nope, >> .mode_set = sti_hda_set_mode, >> - .destroy = sti_hda_brigde_destroy, >> }; >> >> static int sti_hda_connector_get_modes(struct drm_connector *connector) >> @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct >> device *master, void *data) >> >> bridge->driver_private = hda; >> bridge->funcs = &sti_hda_bridge_funcs; >> - drm_bridge_init(drm_dev, bridge); >> + drm_bridge_attach(drm_dev, bridge); >> >> encoder->bridge = bridge; >> connector->encoder = encoder; >> @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct >> device *master, void *data) >> err_sysfs: >> drm_connector_unregister(drm_connector); >> err_connector: >> - drm_bridge_cleanup(bridge); >> drm_connector_cleanup(drm_connector); >> return -EINVAL; >> } >> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c >> index 74e943e..e840ca5d 100644 >> --- a/drivers/gpu/drm/sti/sti_hdmi.c >> +++ b/drivers/gpu/drm/sti/sti_hdmi.c >> @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge >> *bridge) >> /* do nothing */ >> } >> >> -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge) >> -{ >> - drm_bridge_cleanup(bridge); >> - kfree(bridge); >> -} >> - >> static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = { >> .pre_enable = sti_hdmi_pre_enable, >> .enable = sti_hdmi_bridge_nope, >> .disable = sti_hdmi_disable, >> .post_disable = sti_hdmi_bridge_nope, >> .mode_set = sti_hdmi_set_mode, >> - .destroy = sti_hdmi_brigde_destroy, >> }; >> >> static int sti_hdmi_connector_get_modes(struct drm_connector *connector) >> @@ -636,7 +629,7 @@ static int sti_hdmi_bind(struct device *dev, struct >> device *master, void *data) >> >> bridge->driver_private = hdmi; >> bridge->funcs = &sti_hdmi_bridge_funcs; >> - drm_bridge_init(drm_dev, bridge); >> + drm_bridge_attach(drm_dev, bridge); >> >> encoder->bridge = bridge; >> connector->encoder = encoder; >> @@ -668,7 +661,6 @@ static int sti_hdmi_bind(struct device *dev, struct >> device *master, void *data) >> err_sysfs: >> drm_connector_unregister(drm_connector); >> err_connector: >> - drm_bridge_cleanup(bridge); >> drm_connector_cleanup(drm_connector); >> err_adapt: >> put_device(&hdmi->ddc_adapt->dev); >> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h >> index ff62344..b11f8e1 100644 >> --- a/include/drm/bridge/ptn3460.h >> +++ b/include/drm/bridge/ptn3460.h >> @@ -15,6 +15,7 @@ >> #define _DRM_BRIDGE_PTN3460_H_ >> >> struct drm_device; >> +struct drm_bridge; >> struct drm_encoder; >> struct i2c_client; >> struct device_node; >> @@ -23,6 +24,9 @@ struct device_node; >> >> int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder, >> struct i2c_client *client, struct device_node *node); >> + >> +void ptn3460_destroy(struct drm_bridge *bridge); >> + >> #else >> >> static inline int ptn3460_init(struct drm_device *dev, >> @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev, >> return 0; >> } >> >> +static inline void ptn3460_destroy(struct drm_bridge *bridge) >> +{ >> +} >> + >> #endif >> >> #endif >> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h >> index 5b8f254..cc369f3 100644 >> --- a/include/drm/drm_crtc.h >> +++ b/include/drm/drm_crtc.h >> @@ -813,15 +813,16 @@ struct drm_plane { >> >> /** >> * struct drm_bridge_funcs - drm_bridge control functions >> + * @attach: Called during drm_bridge_attach >> * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this >> bridge >> * @disable: Called right before encoder prepare, disables the bridge >> * @post_disable: Called right after encoder prepare, for lockstepped >> disable >> * @mode_set: Set this mode to the bridge >> * @pre_enable: Called right before encoder commit, for lockstepped commit >> * @enable: Called right after encoder commit, enables the bridge >> - * @destroy: make object go away >> */ >> struct drm_bridge_funcs { >> + int (*attach)(struct drm_bridge *bridge); >> bool (*mode_fixup)(struct drm_bridge *bridge, >> const struct drm_display_mode *mode, >> struct drm_display_mode *adjusted_mode); >> @@ -832,22 +833,24 @@ struct drm_bridge_funcs { >> struct drm_display_mode *adjusted_mode); >> void (*pre_enable)(struct drm_bridge *bridge); >> void (*enable)(struct drm_bridge *bridge); >> - void (*destroy)(struct drm_bridge *bridge); >> }; >> >> /** >> * struct drm_bridge - central DRM bridge control structure >> * @dev: DRM device this bridge belongs to >> - * @head: list management >> + * @of_node: device node pointer to the bridge >> + * @list: to keep track of all added bridges >> * @base: base mode object >> * @funcs: control functions >> * @driver_private: pointer to the bridge driver's internal context >> */ >> struct drm_bridge { >> struct drm_device *dev; >> - struct list_head head; >> - >> - struct drm_mode_object base; >> + struct drm_encoder *encoder; >> +#ifdef CONFIG_OF >> + struct device_node *of_node; >> +#endif >> + struct list_head list; >> >> const struct drm_bridge_funcs *funcs; >> void *driver_private; >> @@ -950,7 +953,6 @@ struct drm_mode_group { >> uint32_t num_crtcs; >> uint32_t num_encoders; >> uint32_t num_connectors; >> - uint32_t num_bridges; >> >> /* list of object IDs for this group */ >> uint32_t *id_list; >> @@ -969,8 +971,6 @@ struct drm_mode_group { >> * @fb_list: list of framebuffers available >> * @num_connector: number of connectors on this device >> * @connector_list: list of connector objects >> - * @num_bridge: number of bridges on this device >> - * @bridge_list: list of bridge objects >> * @num_encoder: number of encoders on this device >> * @encoder_list: list of encoder objects >> * @num_overlay_plane: number of overlay planes on this device >> @@ -1015,8 +1015,6 @@ struct drm_mode_config { >> >> int num_connector; >> struct list_head connector_list; >> - int num_bridge; >> - struct list_head bridge_list; >> int num_encoder; >> struct list_head encoder_list; >> >> @@ -1153,8 +1151,10 @@ extern unsigned int drm_connector_index(struct >> drm_connector *connector); >> /* helper to unplug all connectors from sysfs for device */ >> extern void drm_connector_unplug_all(struct drm_device *dev); >> >> -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge >> *bridge); >> -extern void drm_bridge_cleanup(struct drm_bridge *bridge); >> +extern int drm_bridge_add(struct drm_bridge *bridge); >> +extern void drm_bridge_remove(struct drm_bridge *bridge); >> +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np); >> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge >> *bridge); >> >> extern int drm_encoder_init(struct drm_device *dev, >> struct drm_encoder *encoder, >> -- >> 1.7.9.5 >> >> >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
