The component driver only provides 'bind' and 'unbind' callbacks to tell the host driver that it is time to assemble the aggregate driver now that all the components have probed. The component driver model doesn't attempt to resolve runtime PM or suspend/resume ordering, and explicitly mentions this in the code. This lack of support leads to some pretty gnarly usages of the 'prepare' and 'complete' power management hooks in drivers that host the aggregate device, and it fully breaks down when faced with ordering shutdown between the various components, the aggregate driver, and the host driver that registers the whole thing.

In a concrete example, the MSM display driver at drivers/gpu/drm/msm is using 'prepare' and 'complete' to call the drm helpers drm_mode_config_helper_suspend() and drm_mode_config_helper_resume() respectively, so that it can move the aggregate driver suspend/resume callbacks to be before and after the components that make up the drm device call any suspend/resume hooks they have. This only works as long as the component devices don't do anything in their own 'prepare' and 'complete' callbacks. If they did, then the ordering would be incorrect and we would be doing something in the component drivers before the aggregate driver could do anything. Yuck!

Similarly, when trying to add shutdown support to the MSM driver we run across a problem where we're trying to shutdown the drm device via drm_atomic_helper_shutdown(), but some of the devices in the encoder chain have already been shutdown. This time, the component devices aren't the problem (although they could be if they did anything in their shutdown callbacks), but there's a DSI to eDP bridge in the encoder chain that has already been shutdown before the driver hosting the aggregate device runs shutdown. The ordering of driver probe is like this:

1. msm_pdev_probe() (host driver) 2. DSI bridge 3. aggregate bind

When it comes to shutdown we have this order:

1. DSI bridge 2. msm_pdev_shutdown() (host driver)

and so the bridge is already off, but we want to communicate to it to turn things off on the display during msm_pdev_shutdown(). Double yuck! Unfortunately, this time we can't split shutdown into multiple phases and swap msm_pdev_shutdown() with the DSI bridge.

Let's make the component driver into an actual device driver that has probe/remove/shutdown functions. The driver will only be bound to the aggregate device once all component drivers have called component_add() to indicate they're ready to assemble the aggregate driver. This allows us to attach shutdown logic (and in the future runtime PM logic) to the aggregate driver so that it runs the hooks in the correct order.

Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/base/component.c | 454 +++++++++++++++++++++++++++----------- include/linux/component.h | 62 +++++- 2 files changed, 381 insertions(+), 135 deletions(-)

diff --git a/drivers/base/component.c b/drivers/base/component.c index 0a41bbe14981..d99e99cabb99 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -15,6 +15,9 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/debugfs.h> +#include <linux/pm_runtime.h> + +#include "base.h"

/** * DOC: overview @@ -38,8 +41,8 @@ * * Aggregate drivers first assemble a component match list of what they need * using component_match_add(). This is then registered as an aggregate driver - * using component_master_add_with_match(), and unregistered using - * component_master_del(). + * using component_aggregate_register(), and unregistered using + * component_aggregate_unregister(). */

struct component; @@ -60,17 +63,20 @@ struct component_match { };

struct aggregate_device { - struct list_head node; - bool bound; - const struct component_master_ops *ops; struct device *parent; struct device dev; struct component_match *match; + struct aggregate_driver *adrv;

int id; };

+static inline struct aggregate_device *to_aggregate_device(struct device *d) +{ + return container_of(d, struct aggregate_device, dev); +} + struct component { struct list_head node; struct aggregate_device *adev; @@ -79,11 +85,11 @@ struct component { const struct component_ops *ops; int subcomponent; struct device *dev; + struct device_link *link; };

static DEFINE_MUTEX(component_mutex); static LIST_HEAD(component_list); -static LIST_HEAD(aggregate_devices);

static DEFINE_IDA(aggregate_ida);

@@ -101,7 +107,7 @@ static int component_devices_show(struct seq_file *s, void *data) seq_printf(s, "%-40s %20s\n", "aggregate_device name", "status"); seq_puts(s, "-------------------------------------------------------------\n"); seq_printf(s, "%-40s %20s\n\n", - dev_name(m->parent), m->bound ? "bound" : "not bound"); + dev_name(m->parent), m->dev.driver ? "bound" : "not bound");

seq_printf(s, "%-40s %20s\n", "device name", "status"); seq_puts(s, "-------------------------------------------------------------\n"); @@ -149,16 +155,21 @@ static void component_master_debugfs_del(struct aggregate_device *m)

#endif

-static struct aggregate_device *__aggregate_find(struct device *parent, - const struct component_master_ops *ops) +struct aggregate_bus_find_data { + const struct component_master_ops *ops; + struct device *parent; +}; + +static int aggregate_bus_find_match(struct device *dev, const void *_data) { - struct aggregate_device *m; + struct aggregate_device *adev = to_aggregate_device(dev); + const struct aggregate_bus_find_data *data = _data;

- list_for_each_entry(m, &aggregate_devices, node) - if (m->parent == parent && (!ops || m->ops == ops)) - return m; + if (adev->parent == data->parent && + (!data->ops || adev->ops == data->ops)) + return 1;

- return NULL; + return 0; }

static struct component *find_component(struct aggregate_device *adev, @@ -185,7 +196,6 @@ static int find_components(struct aggregate_device *adev) { struct component_match *match = adev->match; size_t i; - int ret = 0;

/* * Scan the array of match functions and attach @@ -194,6 +204,7 @@ static int find_components(struct aggregate_device *adev) for (i = 0; i < match->num; i++) { struct component_match_array *mc = &match->compare[i]; struct component *c; + bool duplicate;

dev_dbg(adev->parent, "Looking for component %zu\n", i);

@@ -201,20 +212,27 @@ static int find_components(struct aggregate_device *adev) continue;

c = find_component(adev, mc); - if (!c) { - ret = -ENXIO; - break; - } + if (!c) + return 0;

+ duplicate = !!c->adev; dev_dbg(adev->parent, "found component %s, duplicate %u\n", - dev_name(c->dev), !!c->adev); + dev_name(c->dev), duplicate);

/* Attach this component to the adev */ - match->compare[i].duplicate = !!c->adev; + match->compare[i].duplicate = duplicate; match->compare[i].component = c; + if (duplicate) + continue; + + /* Matches put in component_del() */ + get_device(&adev->dev); + c->link = device_link_add(&adev->dev, c->dev, + DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME); c->adev = adev; } - return ret; + + return 1; }

/* Detach component from associated aggregate_device */ @@ -228,72 +246,6 @@ static void remove_component(struct aggregate_device *adev, struct component *c) adev->match->compare[i].component = NULL; }

-/* - * Try to bring up an aggregate device. If component is NULL, we're interested - * in this aggregate device, otherwise it's a component which must be present - * to try and bring up the aggregate device. - * - * Returns 1 for successful bringup, 0 if not ready, or -ve errno. - */ -static int try_to_bring_up_aggregate_device(struct aggregate_device *adev, - struct component *component) -{ - int ret; - - dev_dbg(adev->parent, "trying to bring up adev\n"); - - if (find_components(adev)) { - dev_dbg(adev->parent, "master has incomplete components\n"); - return 0; - } - - if (component && component->adev != adev) { - dev_dbg(adev->parent, "master is not for this component (%s)\n", - dev_name(component->dev)); - return 0; - } - - if (!devres_open_group(adev->parent, NULL, GFP_KERNEL)) - return -ENOMEM; - - /* Found all components */ - ret = adev->ops->bind(adev->parent); - if (ret < 0) { - devres_release_group(adev->parent, NULL); - if (ret != -EPROBE_DEFER) - dev_info(adev->parent, "adev bind failed: %d\n", ret); - return ret; - } - - adev->bound = true; - return 1; -} - -static int try_to_bring_up_masters(struct component *component) -{ - struct aggregate_device *adev; - int ret = 0; - - list_for_each_entry(adev, &aggregate_devices, node) { - if (!adev->bound) { - ret = try_to_bring_up_aggregate_device(adev, component); - if (ret != 0) - break; - } - } - - return ret; -} - -static void take_down_aggregate_device(struct aggregate_device *adev) -{ - if (adev->bound) { - adev->ops->unbind(adev->parent); - devres_release_group(adev->parent, NULL); - adev->bound = false; - } -} - static void devm_component_match_release(struct device *parent, void *res) { struct component_match *match = res; @@ -437,7 +389,6 @@ static void free_aggregate_device(struct aggregate_device *adev) int i;

component_master_debugfs_del(adev); - list_del(&adev->node);

if (match) { for (i = 0; i < match->num; i++) { @@ -451,20 +402,143 @@ static void free_aggregate_device(struct aggregate_device *adev) kfree(adev); }

-/** - * component_master_add_with_match - register an aggregate driver - * @parent: parent device of the aggregate driver - * @ops: callbacks for the aggregate driver - * @match: component match list for the aggregate driver - * - * Registers a new aggregate driver consisting of the components added to @match - * by calling one of the component_match_add() functions. Once all components in - * @match are available, it will be assembled by calling - * &component_master_ops.bind from @ops. Must be unregistered by calling - * component_master_del(). - */ -int component_master_add_with_match(struct device *parent, - const struct component_master_ops *ops, +static void aggregate_device_release(struct device *dev) +{ + struct aggregate_device *adev = to_aggregate_device(dev); + + free_aggregate_device(adev); +} + +static int aggregate_device_match(struct device *dev, struct device_driver *drv) +{ + const struct aggregate_driver *adrv = to_aggregate_driver(drv); + struct aggregate_device *adev = to_aggregate_device(dev); + int ret; + + /* Is this driver associated with this device */ + if (adrv != adev->adrv) + return 0; + + /* Should we start to assemble? */ + mutex_lock(&component_mutex); + ret = find_components(adev); + mutex_unlock(&component_mutex); + + return ret; +} + +/* TODO: Remove once all aggregate drivers use component_aggregate_register() */ +static int component_probe_bind(struct aggregate_device *adev) +{ + return adev->ops->bind(adev->parent); +} + +static void component_remove_unbind(struct aggregate_device *adev) +{ + adev->ops->unbind(adev->parent); +} + +static int aggregate_driver_probe(struct device *dev) +{ + const struct aggregate_driver *adrv = to_aggregate_driver(dev->driver); + struct aggregate_device *adev = to_aggregate_device(dev); + bool modern = adrv->probe != component_probe_bind; + int ret; + + /* Only do runtime PM when drivers migrate */ + if (modern) { + pm_runtime_get_noresume(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + } + + mutex_lock(&component_mutex); + if (devres_open_group(adev->parent, NULL, GFP_KERNEL)) { + ret = adrv->probe(adev); + if (ret) + devres_release_group(adev->parent, NULL); + } else { + ret = -ENOMEM; + } + mutex_unlock(&component_mutex); + + if (ret && modern) { + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); + } + + return ret; +} + +static int aggregate_driver_remove(struct device *dev) +{ + const struct aggregate_driver *adrv = to_aggregate_driver(dev->driver); + struct aggregate_device *adev = to_aggregate_device(dev); + bool modern = adrv->remove != component_remove_unbind; + + /* Only do runtime PM when drivers migrate */ + if (modern) + pm_runtime_get_sync(dev); + adrv->remove(to_aggregate_device(dev)); + devres_release_group(adev->parent, NULL); + if (!modern) + return 0; + + pm_runtime_put_noidle(dev); + + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); + + return 0; +} + +static void aggregate_driver_shutdown(struct device *dev) +{ + const struct aggregate_driver *adrv = to_aggregate_driver(dev->driver); + + if (adrv && adrv->shutdown) + adrv->shutdown(to_aggregate_device(dev)); +} + +static struct bus_type aggregate_bus_type = { + .name = "aggregate", + .match = aggregate_device_match, + .probe = aggregate_driver_probe, + .remove = aggregate_driver_remove, + .shutdown = aggregate_driver_shutdown, +}; + +/* Callers take ownership of return value, should call put_device() */ +static struct aggregate_device *__aggregate_find(struct device *parent, + const struct component_master_ops *ops) +{ + struct device *dev; + struct aggregate_bus_find_data data = { + .ops = ops, + .parent = parent, + }; + + dev = bus_find_device(&aggregate_bus_type, NULL, &data, + aggregate_bus_find_match); + + return dev ? to_aggregate_device(dev) : NULL; +} + +static int aggregate_driver_register(struct aggregate_driver *adrv) +{ + adrv->driver.bus = &aggregate_bus_type; + return driver_register(&adrv->driver); +} + +static void aggregate_driver_unregister(struct aggregate_driver *adrv) +{ + driver_unregister(&adrv->driver); +} + +static struct aggregate_device *aggregate_device_add(struct device *parent, + const struct component_master_ops *ops, struct aggregate_driver *adrv, struct component_match *match) { struct aggregate_device *adev; @@ -473,40 +547,114 @@ int component_master_add_with_match(struct device *parent, /* Reallocate the match array for its true size */ ret = component_match_realloc(match, match->num); if (ret) - return ret; + return ERR_PTR(ret);

adev = kzalloc(sizeof(*adev), GFP_KERNEL); if (!adev) - return -ENOMEM; + return ERR_PTR(-ENOMEM);

id = ida_alloc(&aggregate_ida, GFP_KERNEL); if (id < 0) { kfree(adev); - return id; + return ERR_PTR(id); }

adev->id = id; adev->parent = parent; + adev->dev.bus = &aggregate_bus_type; + adev->dev.release = aggregate_device_release; adev->ops = ops; adev->match = match; + adev->adrv = adrv; dev_set_name(&adev->dev, "aggregate%d", id);

+ ret = device_register(&adev->dev); + if (ret) { + put_device(&adev->dev); + return ERR_PTR(ret); + } + component_master_debugfs_add(adev); - /* Add to the list of available aggregate devices. */ - mutex_lock(&component_mutex); - list_add(&adev->node, &aggregate_devices);

- ret = try_to_bring_up_aggregate_device(adev, NULL); + return adev; +} + +/** + * component_master_add_with_match - register an aggregate driver + * @parent: parent device of the aggregate driver + * @ops: callbacks for the aggregate driver + * @match: component match list for the aggregate driver + * + * Registers a new aggregate driver consisting of the components added to @match + * by calling one of the component_match_add() functions. Once all components in + * @match are available, it will be assembled by calling + * &component_master_ops.bind from @ops. Must be unregistered by calling + * component_master_del(). + * + * Deprecated: Use component_aggregate_register() instead. + */ +int component_master_add_with_match(struct device *parent, + const struct component_master_ops *ops, + struct component_match *match) +{ + struct aggregate_driver *adrv; + struct aggregate_device *adev; + int ret = 0; + + adrv = kzalloc(sizeof(*adrv), GFP_KERNEL); + if (!adrv) + return -ENOMEM;

- if (ret < 0) - free_aggregate_device(adev); + adev = aggregate_device_add(parent, ops, adrv, match); + if (IS_ERR(adev)) { + ret = PTR_ERR(adev); + goto err; + }

- mutex_unlock(&component_mutex); + adrv->probe = component_probe_bind; + adrv->remove = component_remove_unbind; + adrv->driver.owner = THIS_MODULE; + adrv->driver.name = dev_name(&adev->dev); + + ret = aggregate_driver_register(adrv); + if (!ret) + return 0;

- return ret < 0 ? ret : 0; + put_device(&adev->dev); +err: + kfree(adrv); + return ret; } EXPORT_SYMBOL_GPL(component_master_add_with_match);

+/** + * component_aggregate_register - register an aggregate driver + * @parent: parent device of the aggregate driver + * @adrv: aggregate driver to register + * + * Registers a new aggregate driver consisting of the components added to @adrv.match + * by calling one of the component_match_add() functions. Once all components in + * @match are available, the aggregate driver will be assembled by calling + * &adrv.bind. Must be unregistered by calling component_aggregate_unregister(). + */ +int component_aggregate_register(struct device *parent, + struct aggregate_driver *adrv, struct component_match *match) +{ + struct aggregate_device *adev; + int ret; + + adev = aggregate_device_add(parent, NULL, adrv, match); + if (IS_ERR(adev)) + return PTR_ERR(adev); + + ret = aggregate_driver_register(adrv); + if (ret) + put_device(&adev->dev); + + return ret; +} +EXPORT_SYMBOL_GPL(component_aggregate_register); + /** * component_master_del - unregister an aggregate driver * @parent: parent device of the aggregate driver @@ -515,22 +663,60 @@ EXPORT_SYMBOL_GPL(component_master_add_with_match); * Unregisters an aggregate driver registered with * component_master_add_with_match(). If necessary the aggregate driver is first * disassembled by calling &component_master_ops.unbind from @ops. + * + * Deprecated: Use component_aggregate_unregister() instead. */ void component_master_del(struct device *parent, const struct component_master_ops *ops) { struct aggregate_device *adev; + struct aggregate_driver *adrv; + struct device_driver *drv;

mutex_lock(&component_mutex); adev = __aggregate_find(parent, ops); + mutex_unlock(&component_mutex); + if (adev) { - take_down_aggregate_device(adev); - free_aggregate_device(adev); + drv = adev->dev.driver; + if (drv) { + adrv = to_aggregate_driver(drv); + aggregate_driver_unregister(adrv); + kfree(adrv); + } + + device_unregister(&adev->dev); } - mutex_unlock(&component_mutex); + put_device(&adev->dev); } EXPORT_SYMBOL_GPL(component_master_del);

+/** + * component_aggregate_unregister - unregister an aggregate driver + * @parent: parent device of the aggregate driver + * @adrv: registered aggregate driver + * + * Unregisters an aggregate driver registered with + * component_aggregate_register(). If necessary the aggregate driver is first + * disassembled. + */ +void component_aggregate_unregister(struct device *parent, + struct aggregate_driver *adrv) +{ + struct aggregate_device *adev; + + mutex_lock(&component_mutex); + adev = __aggregate_find(parent, NULL); + mutex_unlock(&component_mutex); + + if (adev) + device_unregister(&adev->dev); + put_device(&adev->dev); + + aggregate_driver_unregister(adrv); +} +EXPORT_SYMBOL_GPL(component_aggregate_unregister); + static void component_unbind(struct component *component, struct aggregate_device *adev, void *data) { @@ -571,6 +757,8 @@ void component_unbind_all(struct device *parent, void *data) c = adev->match->compare[i].component; component_unbind(c, adev, data); } + + put_device(&adev->dev); } EXPORT_SYMBOL_GPL(component_unbind_all);

@@ -665,6 +853,7 @@ int component_bind_all(struct device *parent, void *data) component_unbind(c, adev, data); } } + put_device(&adev->dev);

return ret; } @@ -674,7 +863,6 @@ static int __component_add(struct device *dev, const struct component_ops *ops, int subcomponent) { struct component *component; - int ret;

component = kzalloc(sizeof(*component), GFP_KERNEL); if (!component) @@ -688,18 +876,10 @@ static int __component_add(struct device *dev, const struct component_ops *ops,

mutex_lock(&component_mutex); list_add_tail(&component->node, &component_list); - - ret = try_to_bring_up_masters(component); - if (ret < 0) { - if (component->adev) - remove_component(component->adev, component); - list_del(&component->node); - - kfree(component); - } mutex_unlock(&component_mutex);

- return ret < 0 ? ret : 0; + /* Try to bind */ + return bus_rescan_devices(&aggregate_bus_type); }

/** @@ -763,6 +943,7 @@ EXPORT_SYMBOL_GPL(component_add); */ void component_del(struct device *dev, const struct component_ops *ops) { + struct aggregate_device *adev = NULL; struct component *c, *component = NULL;

mutex_lock(&component_mutex); @@ -774,13 +955,26 @@ void component_del(struct device *dev, const struct component_ops *ops) }

if (component && component->adev) { - take_down_aggregate_device(component->adev); - remove_component(component->adev, component); + adev = component->adev; + remove_component(adev, component); }

mutex_unlock(&component_mutex);

+ if (adev) { + /* Force unbind */ + device_driver_detach(&adev->dev); + device_link_del(component->link); + put_device(&adev->dev); + } + WARN_ON(!component); kfree(component); } EXPORT_SYMBOL_GPL(component_del); + +static int __init aggregate_bus_init(void) +{ + return bus_register(&aggregate_bus_type); +} +postcore_initcall(aggregate_bus_init); diff --git a/include/linux/component.h b/include/linux/component.h index 71bfc3862633..95d1b23ede8a 100644 --- a/include/linux/component.h +++ b/include/linux/component.h @@ -3,9 +3,7 @@ #define COMPONENT_H

#include <linux/stddef.h> - - -struct device; +#include <linux/device.h>

/** * struct component_ops - callbacks for component drivers @@ -82,11 +80,65 @@ struct component_master_ops { void (*unbind)(struct device *master); };

+struct component_match; + +/** + * struct aggregate_driver - Aggregate driver (made up of other drivers) + * @driver: device driver + * @match: component match list + */ +struct aggregate_driver { + /** + * @probe: + * + * Called when all components or the aggregate driver, as specified in + * the @match list are + * ready. Usually there are 3 steps to bind an aggregate driver: + * + * 1. Allocate a struct aggregate_driver. + * + * 2. Bind all components to the aggregate driver by calling + * component_bind_all() with the aggregate driver structure as opaque + * pointer data. + * + * 3. Register the aggregate driver with the subsystem to publish its + * interfaces. + */ + int (*probe)(struct aggregate_device *adev); + /** + * @remove: + * + * Called when either the aggregate driver, using + * component_aggregate_unregister(), or one of its components, using + * component_del(), is unregistered. + */ + void (*remove)(struct aggregate_device *adev); + /** + * @shutdown: + * + * Called when the system is shutting down. + */ + void (*shutdown)(struct aggregate_device *adev); + + struct device_driver driver; +}; + +static inline struct aggregate_driver *to_aggregate_driver(struct device_driver *d) +{ + if (!d) + return NULL; + + return container_of(d, struct aggregate_driver, driver); +} + +int component_aggregate_register(struct device *parent, + struct aggregate_driver *adrv, struct component_match *match); +void component_aggregate_unregister(struct device *parent, + struct aggregate_driver *adrv); + void component_master_del(struct device *, const struct component_master_ops *);

-struct component_match; - int component_master_add_with_match(struct device *, const struct component_master_ops *, struct component_match *); void component_match_add_release(struct device *master,

This allows aggregate driver writers to use the device passed to their probe/remove/shutdown functions properly instead of treating it as an opaque pointer.

Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/base/component.c | 15 --------------- include/linux/component.h | 19 ++++++++++++++++--- 2 files changed, 16 insertions(+), 18 deletions(-)

diff --git a/drivers/base/component.c b/drivers/base/component.c index d99e99cabb99..f49b48695c8f 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -62,21 +62,6 @@ struct component_match { struct component_match_array *compare; };

-struct aggregate_device { - const struct component_master_ops *ops; - struct device *parent; - struct device dev; - struct component_match *match; - struct aggregate_driver *adrv; - - int id; -}; - -static inline struct aggregate_device *to_aggregate_device(struct device *d) -{ - return container_of(d, struct aggregate_device, dev); -} - struct component { struct list_head node; struct aggregate_device *adev; diff --git a/include/linux/component.h b/include/linux/component.h index 95d1b23ede8a..e99cf8e910f0 100644 --- a/include/linux/component.h +++ b/include/linux/component.h @@ -5,6 +5,8 @@ #include <linux/stddef.h> #include <linux/device.h>

+struct component_match; + /** * struct component_ops - callbacks for component drivers * @@ -39,8 +41,6 @@ void component_del(struct device *, const struct component_ops *); int component_bind_all(struct device *master, void *master_data); void component_unbind_all(struct device *master, void *master_data);

-struct aggregate_device; - /** * struct component_master_ops - callback for the aggregate driver * @@ -80,7 +80,20 @@ struct component_master_ops { void (*unbind)(struct device *master); };

-struct component_match; +struct aggregate_device { + const struct component_master_ops *ops; + struct device *parent; + struct device dev; + struct component_match *match; + struct aggregate_driver *adrv; + + int id; +}; + +static inline struct aggregate_device *to_aggregate_device(struct device *d) +{ + return container_of(d, struct aggregate_device, dev); +}

/** * struct aggregate_driver - Aggregate driver (made up of other drivers)

We'd like to get more device model features in the component framework so let's pass the struct aggregate_device pointer instead of the parent device pointer to the component binding functions. This will allow drivers to inspect and control things related to the aggregate device in case they need it, and they'll always be able to get back to the device they were using before by using the 'parent' member of the aggregate device struct.

Suggested-by: Daniel Vetter daniel@ffwll.ch Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/base/component.c | 14 +++++++++++--- include/linux/component.h | 22 ++++++++++++++++++++++ 2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/drivers/base/component.c b/drivers/base/component.c index f49b48695c8f..a6dd33d0ddeb 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -707,8 +707,13 @@ static void component_unbind(struct component *component, { WARN_ON(!component->bound);

- if (component->ops && component->ops->unbind) - component->ops->unbind(component->dev, adev->parent, data); + if (component->ops) { + if (component->ops->unbind) + component->ops->unbind(component->dev, adev->parent, data); + else if (component->ops->unbind_component) + component->ops->unbind_component(component->dev, adev, data); + } + component->bound = false;

/* Release all resources claimed in the binding of this component */ @@ -773,7 +778,10 @@ static int component_bind(struct component *component, struct aggregate_device * dev_dbg(adev->parent, "binding %s (ops %ps)\n", dev_name(component->dev), component->ops);

- ret = component->ops->bind(component->dev, adev->parent, data); + if (component->ops->bind_component) + ret = component->ops->bind_component(component->dev, adev, data); + else + ret = component->ops->bind(component->dev, adev->parent, data); if (!ret) { component->bound = true;

diff --git a/include/linux/component.h b/include/linux/component.h index e99cf8e910f0..d8dcbf9733da 100644 --- a/include/linux/component.h +++ b/include/linux/component.h @@ -6,6 +6,7 @@ #include <linux/device.h>

struct component_match; +struct aggregate_device;

/** * struct component_ops - callbacks for component drivers @@ -19,18 +20,39 @@ struct component_ops { * * Called through component_bind_all() when the aggregate driver is * ready to bind the overall driver. + * + * Deprecated: Use bind_component() instead. */ int (*bind)(struct device *comp, struct device *master, void *master_data); + /** + * @bind_component: + * + * Called through component_bind_all() when the aggregate driver is + * ready to bind the overall driver. + */ + int (*bind_component)(struct device *comp, struct aggregate_device *adev, + void *aggregate_data); /** * @unbind: * * Called through component_unbind_all() when the aggregate driver is * ready to bind the overall driver, or when component_bind_all() fails * part-ways through and needs to unbind some already bound components. + * + * Deprecated: Use unbind_component() instead. */ void (*unbind)(struct device *comp, struct device *master, void *master_data); + /** + * @unbind_component: + * + * Called through component_unbind_all() when the aggregate driver is + * ready to unbind the overall driver, or when component_bind_all() fails + * part-ways through and needs to unbind some already bound components. + */ + int (*unbind_component)(struct device *comp, struct aggregate_device *adev, + void *aggregate_data); };

int component_add(struct device *, const struct component_ops *);

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: James Qian Wang (Arm Technology China) james.qian.wang@arm.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- .../gpu/drm/arm/display/komeda/komeda_drv.c | 20 ++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c index e7933930a657..0463386a6ed2 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -25,8 +25,9 @@ struct komeda_dev *dev_to_mdev(struct device *dev) return mdrv ? mdrv->mdev : NULL; }

-static void komeda_unbind(struct device *dev) +static void komeda_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct komeda_drv *mdrv = dev_get_drvdata(dev);

if (!mdrv) @@ -45,8 +46,9 @@ static void komeda_unbind(struct device *dev) devm_kfree(dev, mdrv); }

-static int komeda_bind(struct device *dev) +static int komeda_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct komeda_drv *mdrv; int err;

@@ -87,9 +89,13 @@ static int komeda_bind(struct device *dev) return err; }

-static const struct component_master_ops komeda_master_ops = { - .bind = komeda_bind, - .unbind = komeda_unbind, +static struct aggregate_driver komeda_aggregate_driver = { + .probe = komeda_bind, + .remove = komeda_unbind, + .driver = { + .name = "komeda_drm", + .owner = THIS_MODULE, + }, };

static int compare_of(struct device *dev, void *data) @@ -129,12 +135,12 @@ static int komeda_platform_probe(struct platform_device *pdev) komeda_add_slave(dev, &match, child, KOMEDA_OF_PORT_OUTPUT, 1); }

- return component_master_add_with_match(dev, &komeda_master_ops, match); + return component_aggregate_register(dev, &komeda_aggregate_driver, match); }

static int komeda_platform_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &komeda_master_ops); + component_aggregate_unregister(&pdev->dev, &komeda_aggregate_driver); return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

TODO: This can be updated to move the drm helper logic into the aggregate driver shutdown op.

Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Liviu Dudau liviu.dudau@arm.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/arm/malidp_drv.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 78d15b04b105..e6ee4d1e3bb8 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -702,8 +702,9 @@ static int malidp_runtime_pm_resume(struct device *dev) return 0; }

-static int malidp_bind(struct device *dev) +static int malidp_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct resource *res; struct drm_device *drm; struct malidp_drm *malidp; @@ -894,8 +895,9 @@ static int malidp_bind(struct device *dev) return ret; }

-static void malidp_unbind(struct device *dev) +static void malidp_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev); struct malidp_drm *malidp = drm->dev_private; struct malidp_hw_device *hwdev = malidp->dev; @@ -921,9 +923,13 @@ static void malidp_unbind(struct device *dev) of_reserved_mem_device_release(dev); }

-static const struct component_master_ops malidp_master_ops = { - .bind = malidp_bind, - .unbind = malidp_unbind, +static struct aggregate_driver malidp_aggregate_driver = { + .probe = malidp_bind, + .remove = malidp_unbind, + .driver = { + .name = "malidp_drm", + .owner = THIS_MODULE, + }, };

static int malidp_compare_dev(struct device *dev, void *data) @@ -949,13 +955,12 @@ static int malidp_platform_probe(struct platform_device *pdev) drm_of_component_match_add(&pdev->dev, &match, malidp_compare_dev, port); of_node_put(port); - return component_master_add_with_match(&pdev->dev, &malidp_master_ops, - match); + return component_aggregate_register(&pdev->dev, &malidp_aggregate_driver, match); }

static int malidp_platform_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &malidp_master_ops); + component_aggregate_unregister(&pdev->dev, &malidp_aggregate_driver); return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Lucas Stach l.stach@pengutronix.de Cc: Russell King linux+etnaviv@armlinux.org.uk Cc: Christian Gmeiner christian.gmeiner@gmail.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 7dcc6392792d..95d1e518ff13 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -494,8 +494,9 @@ static const struct drm_driver etnaviv_drm_driver = { /* * Platform driver: */ -static int etnaviv_bind(struct device *dev) +static int etnaviv_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct etnaviv_drm_private *priv; struct drm_device *drm; int ret; @@ -552,8 +553,9 @@ static int etnaviv_bind(struct device *dev) return ret; }

-static void etnaviv_unbind(struct device *dev) +static void etnaviv_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev); struct etnaviv_drm_private *priv = drm->dev_private;

@@ -569,9 +571,13 @@ static void etnaviv_unbind(struct device *dev) drm_dev_put(drm); }

-static const struct component_master_ops etnaviv_master_ops = { - .bind = etnaviv_bind, - .unbind = etnaviv_unbind, +static struct aggregate_driver etnaviv_aggregate_driver = { + .probe = etnaviv_bind, + .remove = etnaviv_unbind, + .driver = { + .name = "etnaviv_drm", + .owner = THIS_MODULE, + }, };

static int compare_of(struct device *dev, void *data) @@ -609,12 +615,12 @@ static int etnaviv_pdev_probe(struct platform_device *pdev) component_match_add(dev, &match, compare_str, names[i]); }

- return component_master_add_with_match(dev, &etnaviv_master_ops, match); + return component_aggregate_register(dev, &etnaviv_aggregate_driver, match); }

static int etnaviv_pdev_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &etnaviv_master_ops); + component_aggregate_unregister(&pdev->dev, &etnaviv_aggregate_driver);

return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Inki Dae inki.dae@samsung.com Cc: Joonyoung Shim jy0922.shim@samsung.com Cc: Seung-Woo Kim sw0312.kim@samsung.com Cc: Kyungmin Park kyungmin.park@samsung.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index d8f1cf4d6b69..dcb52ec2bd35 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -253,8 +253,9 @@ static struct component_match *exynos_drm_match_add(struct device *dev) return match ?: ERR_PTR(-ENODEV); }

-static int exynos_drm_bind(struct device *dev) +static int exynos_drm_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct exynos_drm_private *private; struct drm_encoder *encoder; struct drm_device *drm; @@ -330,8 +331,9 @@ static int exynos_drm_bind(struct device *dev) return ret; }

-static void exynos_drm_unbind(struct device *dev) +static void exynos_drm_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev);

drm_dev_unregister(drm); @@ -350,9 +352,13 @@ static void exynos_drm_unbind(struct device *dev) drm_dev_put(drm); }

-static const struct component_master_ops exynos_drm_ops = { - .bind = exynos_drm_bind, - .unbind = exynos_drm_unbind, +static struct aggregate_driver exynos_drm_aggregate_driver = { + .probe = exynos_drm_bind, + .remove = exynos_drm_unbind, + .driver = { + .name = "exynos_drm", + .owner = THIS_MODULE, + }, };

static int exynos_drm_platform_probe(struct platform_device *pdev) @@ -365,13 +371,12 @@ static int exynos_drm_platform_probe(struct platform_device *pdev) if (IS_ERR(match)) return PTR_ERR(match);

- return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, - match); + return component_aggregate_register(&pdev->dev, &exynos_drm_aggregate_driver, match); }

static int exynos_drm_platform_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &exynos_drm_ops); + component_aggregate_unregister(&pdev->dev, &exynos_drm_aggregate_driver); return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

TODO: Move the helpers to PM in aggregate driver hooks.

Cc: Paul Cercueil paul@crapouillou.net Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 24 +++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index a5df1c8d34cd..058b7bfe5610 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -1150,8 +1150,10 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) return ret; }

-static int ingenic_drm_bind_with_components(struct device *dev) +static int ingenic_drm_bind_with_components(struct aggregate_device *adev) { + struct device *dev = adev->parent; + return ingenic_drm_bind(dev, true); }

@@ -1174,9 +1176,19 @@ static void ingenic_drm_unbind(struct device *dev) drm_atomic_helper_shutdown(&priv->drm); }

-static const struct component_master_ops ingenic_master_ops = { - .bind = ingenic_drm_bind_with_components, - .unbind = ingenic_drm_unbind, +static void ingenic_aggregate_remove(struct aggregate_device *adev) +{ + struct device *dev = adev->parent; + ingenic_drm_unbind(dev); +} + +static struct aggregate_driver ingenic_aggregate_driver = { + .probe = ingenic_drm_bind_with_components, + .remove = ingenic_aggregate_remove, + .driver = { + .name = "ingenic_drm", + .owner = THIS_MODULE, + }, };

static int ingenic_drm_probe(struct platform_device *pdev) @@ -1196,7 +1208,7 @@ static int ingenic_drm_probe(struct platform_device *pdev) drm_of_component_match_add(dev, &match, compare_of, np); of_node_put(np);

- return component_master_add_with_match(dev, &ingenic_master_ops, match); + return component_aggregate_register(dev, &ingenic_aggregate_driver, match); }

static int ingenic_drm_remove(struct platform_device *pdev) @@ -1206,7 +1218,7 @@ static int ingenic_drm_remove(struct platform_device *pdev) if (!IS_ENABLED(CONFIG_DRM_INGENIC_IPU)) ingenic_drm_unbind(dev); else - component_master_del(dev, &ingenic_master_ops); + component_aggregate_unregister(dev, &ingenic_aggregate_driver);

return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/mcde/mcde_drv.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c index e60566a5739c..84fcfe77540e 100644 --- a/drivers/gpu/drm/mcde/mcde_drv.c +++ b/drivers/gpu/drm/mcde/mcde_drv.c @@ -215,8 +215,9 @@ static const struct drm_driver mcde_drm_driver = { DRM_GEM_CMA_DRIVER_OPS, };

-static int mcde_drm_bind(struct device *dev) +static int mcde_drm_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev); int ret;

@@ -247,8 +248,9 @@ static int mcde_drm_bind(struct device *dev) return ret; }

-static void mcde_drm_unbind(struct device *dev) +static void mcde_drm_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev);

drm_dev_unregister(drm); @@ -256,9 +258,13 @@ static void mcde_drm_unbind(struct device *dev) component_unbind_all(drm->dev, drm); }

-static const struct component_master_ops mcde_drm_comp_ops = { - .bind = mcde_drm_bind, - .unbind = mcde_drm_unbind, +static struct aggregate_driver mcde_drm_comp_driver = { + .probe = mcde_drm_bind, + .remove = mcde_drm_unbind, + .driver = { + .name = "mcde_drm", + .owner = THIS_MODULE, + }, };

static struct platform_driver *const mcde_component_drivers[] = { @@ -421,7 +427,7 @@ static int mcde_probe(struct platform_device *pdev) * Perform an invasive reset of the MCDE and all blocks by * cutting the power to the subsystem, then bring it back up * later when we enable the display as a result of - * component_master_add_with_match(). + * component_aggregate_register(). */ ret = regulator_disable(mcde->epod); if (ret) { @@ -431,8 +437,7 @@ static int mcde_probe(struct platform_device *pdev) /* Wait 50 ms so we are sure we cut the power */ usleep_range(50000, 70000);

- ret = component_master_add_with_match(&pdev->dev, &mcde_drm_comp_ops, - match); + ret = component_aggregate_register(&pdev->dev, &mcde_drm_comp_driver, match); if (ret) { dev_err(dev, "failed to add component master\n"); /* @@ -461,7 +466,7 @@ static int mcde_remove(struct platform_device *pdev) struct drm_device *drm = platform_get_drvdata(pdev); struct mcde *mcde = to_mcde(drm);

- component_master_del(&pdev->dev, &mcde_drm_comp_ops); + component_aggregate_unregister(&pdev->dev, &mcde_drm_comp_driver); clk_disable_unprepare(mcde->mcde_clk); regulator_disable(mcde->vana); regulator_disable(mcde->epod);

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Neil Armstrong narmstrong@baylibre.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/meson/meson_drv.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c index bc0d60df04ae..109fb9d057e3 100644 --- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -357,13 +357,16 @@ static int meson_drv_bind_master(struct device *dev, bool has_components) return ret; }

-static int meson_drv_bind(struct device *dev) +static int meson_drv_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; + return meson_drv_bind_master(dev, true); }

-static void meson_drv_unbind(struct device *dev) +static void meson_drv_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct meson_drm *priv = dev_get_drvdata(dev); struct drm_device *drm = priv->drm;

@@ -387,9 +390,13 @@ static void meson_drv_unbind(struct device *dev) } }

-static const struct component_master_ops meson_drv_master_ops = { - .bind = meson_drv_bind, - .unbind = meson_drv_unbind, +static struct aggregate_driver meson_aggregate_drv = { + .probe = meson_drv_bind, + .remove = meson_drv_unbind, + .driver = { + .name = "meson_drm", + .owner = THIS_MODULE, + }, };

static int __maybe_unused meson_drv_pm_suspend(struct device *dev) @@ -503,9 +510,7 @@ static int meson_drv_probe(struct platform_device *pdev) if (count) { dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count);

- return component_master_add_with_match(&pdev->dev, - &meson_drv_master_ops, - match); + return component_aggregate_register(&pdev->dev, &meson_aggregate_drv, match); }

/* If no output endpoints were available, simply bail out */

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Sandy Huang hjc@rock-chips.com Cc: "Heiko Stübner" heiko@sntech.de Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index bfba9793d238..cc63222c3ad0 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -109,8 +109,9 @@ static void rockchip_iommu_cleanup(struct drm_device *drm_dev) iommu_domain_free(private->domain); }

-static int rockchip_drm_bind(struct device *dev) +static int rockchip_drm_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm_dev; struct rockchip_drm_private *private; int ret; @@ -186,8 +187,9 @@ static int rockchip_drm_bind(struct device *dev) return ret; }

-static void rockchip_drm_unbind(struct device *dev) +static void rockchip_drm_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm_dev = dev_get_drvdata(dev);

drm_dev_unregister(drm_dev); @@ -342,9 +344,13 @@ static struct component_match *rockchip_drm_match_add(struct device *dev) return match ?: ERR_PTR(-ENODEV); }

-static const struct component_master_ops rockchip_drm_ops = { - .bind = rockchip_drm_bind, - .unbind = rockchip_drm_unbind, +static struct aggregate_driver rockchip_aggregate_driver = { + .probe = rockchip_drm_bind, + .remove = rockchip_drm_unbind, + .driver = { + .name = "rockchip_drm", + .owner = THIS_MODULE, + }, };

static int rockchip_drm_platform_of_probe(struct device *dev) @@ -415,7 +421,7 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev) if (IS_ERR(match)) return PTR_ERR(match);

- ret = component_master_add_with_match(dev, &rockchip_drm_ops, match); + ret = component_aggregate_register(dev, &rockchip_aggregate_driver, match); if (ret < 0) { rockchip_drm_match_remove(dev); return ret; @@ -426,7 +432,7 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)

static int rockchip_drm_platform_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &rockchip_drm_ops); + component_aggregate_unregister(&pdev->dev, &rockchip_aggregate_driver);

rockchip_drm_match_remove(&pdev->dev);

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Maxime Ripard mripard@kernel.org Cc: Chen-Yu Tsai wens@csie.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/sun4i/sun4i_drv.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index 54dd562e294c..700f5e32eaf7 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -56,8 +56,9 @@ static const struct drm_driver sun4i_drv_driver = { DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE(drm_sun4i_gem_dumb_create), };

-static int sun4i_drv_bind(struct device *dev) +static int sun4i_drv_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm; struct sun4i_drv *drv; int ret; @@ -125,8 +126,9 @@ static int sun4i_drv_bind(struct device *dev) return ret; }

-static void sun4i_drv_unbind(struct device *dev) +static void sun4i_drv_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev);

drm_dev_unregister(drm); @@ -140,9 +142,13 @@ static void sun4i_drv_unbind(struct device *dev) drm_dev_put(drm); }

-static const struct component_master_ops sun4i_drv_master_ops = { - .bind = sun4i_drv_bind, - .unbind = sun4i_drv_unbind, +static struct aggregate_driver sun4i_aggregate_driver = { + .probe = sun4i_drv_bind, + .remove = sun4i_drv_unbind, + .driver = { + .name = "sun4i_drm", + .owner = THIS_MODULE, + }, };

static bool sun4i_drv_node_is_connector(struct device_node *node) @@ -398,16 +404,14 @@ static int sun4i_drv_probe(struct platform_device *pdev) }

if (count) - return component_master_add_with_match(&pdev->dev, - &sun4i_drv_master_ops, - match); - else - return 0; + return component_aggregate_register(&pdev->dev, &sun4i_aggregate_driver, match); + + return 0; }

static int sun4i_drv_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &sun4i_drv_master_ops); + component_aggregate_unregister(&pdev->dev, &sun4i_aggregate_driver);

return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Emma Anholt emma@anholt.net Cc: Maxime Ripard mripard@kernel.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/vc4/vc4_drv.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index f6c16c5aee68..bccbde7a2f59 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -214,8 +214,9 @@ static void vc4_match_add_drivers(struct device *dev, } }

-static int vc4_drm_bind(struct device *dev) +static int vc4_drm_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm; struct vc4_dev *vc4; @@ -286,8 +287,9 @@ static int vc4_drm_bind(struct device *dev) return ret; }

-static void vc4_drm_unbind(struct device *dev) +static void vc4_drm_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct drm_device *drm = dev_get_drvdata(dev);

drm_dev_unregister(drm); @@ -295,9 +297,13 @@ static void vc4_drm_unbind(struct device *dev) drm_atomic_helper_shutdown(drm); }

-static const struct component_master_ops vc4_drm_ops = { - .bind = vc4_drm_bind, - .unbind = vc4_drm_unbind, +static struct aggregate_driver vc4_aggregate_driver = { + .probe = vc4_drm_bind, + .remove = vc4_drm_unbind, + .driver = { + .name = "vc4_drm", + .owner = THIS_MODULE, + }, };

/* @@ -328,12 +334,12 @@ static int vc4_platform_drm_probe(struct platform_device *pdev) vc4_match_add_drivers(dev, &match, component_drivers, ARRAY_SIZE(component_drivers));

- return component_master_add_with_match(dev, &vc4_drm_ops, match); + return component_aggregate_register(dev, &vc4_aggregate_driver, match); }

static int vc4_platform_drm_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &vc4_drm_ops); + component_aggregate_unregister(&pdev->dev, &vc4_aggregate_driver);

return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Yong Wu yong.wu@mediatek.com Cc: Joerg Roedel joro@8bytes.org Cc: Will Deacon will@kernel.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/iommu/mtk_iommu.c | 14 +++++++++----- drivers/iommu/mtk_iommu.h | 6 ++++-- drivers/iommu/mtk_iommu_v1.c | 14 +++++++++----- 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d837adfd1da5..8b303c388a9b 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -750,9 +750,13 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) return 0; }

-static const struct component_master_ops mtk_iommu_com_ops = { - .bind = mtk_iommu_bind, - .unbind = mtk_iommu_unbind, +static struct aggregate_driver mtk_iommu_aggregate_driver = { + .probe = mtk_iommu_bind, + .remove = mtk_iommu_unbind, + .driver = { + .name = "mtk_iommu_agg", + .owner = THIS_MODULE, + }, };

static int mtk_iommu_probe(struct platform_device *pdev) @@ -893,7 +897,7 @@ static int mtk_iommu_probe(struct platform_device *pdev) goto out_list_del; }

- ret = component_master_add_with_match(dev, &mtk_iommu_com_ops, match); + ret = component_aggregate_register(dev, &mtk_iommu_aggregate_driver, match); if (ret) goto out_bus_set_null; return ret; @@ -926,7 +930,7 @@ static int mtk_iommu_remove(struct platform_device *pdev) device_link_remove(data->smicomm_dev, &pdev->dev); pm_runtime_disable(&pdev->dev); devm_free_irq(&pdev->dev, data->irq, data); - component_master_del(&pdev->dev, &mtk_iommu_com_ops); + component_aggregate_unregister(&pdev->dev, &mtk_iommu_aggregate_driver); return 0; }

diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index f81fa8862ed0..064fd4f4eade 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -94,15 +94,17 @@ static inline void release_of(struct device *dev, void *data) of_node_put(data); }

-static inline int mtk_iommu_bind(struct device *dev) +static inline int mtk_iommu_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct mtk_iommu_data *data = dev_get_drvdata(dev);

return component_bind_all(dev, &data->larb_imu); }

-static inline void mtk_iommu_unbind(struct device *dev) +static inline void mtk_iommu_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct mtk_iommu_data *data = dev_get_drvdata(dev);

component_unbind_all(dev, &data->larb_imu); diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index be22fcf988ce..5fb29058a165 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -534,9 +534,13 @@ static const struct of_device_id mtk_iommu_of_ids[] = { {} };

-static const struct component_master_ops mtk_iommu_com_ops = { - .bind = mtk_iommu_bind, - .unbind = mtk_iommu_unbind, +static struct aggregate_driver mtk_iommu_aggregate_driver = { + .probe = mtk_iommu_bind, + .remove = mtk_iommu_unbind, + .driver = { + .name = "mtk_iommu_agg", + .owner = THIS_MODULE, + }, };

static int mtk_iommu_probe(struct platform_device *pdev) @@ -624,7 +628,7 @@ static int mtk_iommu_probe(struct platform_device *pdev) goto out_dev_unreg; }

- ret = component_master_add_with_match(dev, &mtk_iommu_com_ops, match); + ret = component_aggregate_register(dev, &mtk_iommu_aggregate_driver, match); if (ret) goto out_bus_set_null; return ret; @@ -650,7 +654,7 @@ static int mtk_iommu_remove(struct platform_device *pdev)

clk_disable_unprepare(data->bclk); devm_free_irq(&pdev->dev, data->irq, data); - component_master_del(&pdev->dev, &mtk_iommu_com_ops); + component_aggregate_unregister(&pdev->dev, &mtk_iommu_aggregate_driver); return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Sebastian Reichel sre@kernel.org Cc: linux-pm@vger.kernel.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/power/supply/ab8500_charger.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c index 15eadaf46f14..52d4105e28f2 100644 --- a/drivers/power/supply/ab8500_charger.c +++ b/drivers/power/supply/ab8500_charger.c @@ -3312,8 +3312,9 @@ static const struct power_supply_desc ab8500_usb_chg_desc = { .get_property = ab8500_charger_usb_get_property, };

-static int ab8500_charger_bind(struct device *dev) +static int ab8500_charger_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct ab8500_charger *di = dev_get_drvdata(dev); int ch_stat; int ret; @@ -3354,8 +3355,9 @@ static int ab8500_charger_bind(struct device *dev) return 0; }

-static void ab8500_charger_unbind(struct device *dev) +static void ab8500_charger_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct ab8500_charger *di = dev_get_drvdata(dev); int ret;

@@ -3380,9 +3382,13 @@ static void ab8500_charger_unbind(struct device *dev) component_unbind_all(dev, di); }

-static const struct component_master_ops ab8500_charger_comp_ops = { - .bind = ab8500_charger_bind, - .unbind = ab8500_charger_unbind, +static struct aggregate_driver ab8500_charger_aggregate_driver = { + .probe = ab8500_charger_bind, + .remove = ab8500_charger_unbind, + .driver = { + .name = "ab8500_charger_agg", + .owner = THIS_MODULE, + }, };

static struct platform_driver *const ab8500_charger_component_drivers[] = { @@ -3663,9 +3669,7 @@ static int ab8500_charger_probe(struct platform_device *pdev) }

- ret = component_master_add_with_match(&pdev->dev, - &ab8500_charger_comp_ops, - match); + ret = component_aggregate_register(&pdev->dev, &ab8500_charger_aggregate_driver, match); if (ret) { dev_err(dev, "failed to add component master\n"); goto free_notifier; @@ -3688,7 +3692,7 @@ static int ab8500_charger_remove(struct platform_device *pdev) { struct ab8500_charger *di = platform_get_drvdata(pdev);

- component_master_del(&pdev->dev, &ab8500_charger_comp_ops); + component_aggregate_unregister(&pdev->dev, &ab8500_charger_aggregate_driver);

usb_unregister_notifier(di->usb_phy, &di->nb); usb_put_phy(di->usb_phy);

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: linux-omap@vger.kernel.org Cc: linux-fbdev@vger.kernel.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/video/fbdev/omap2/omapfb/dss/dss.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c b/drivers/video/fbdev/omap2/omapfb/dss/dss.c index a6b1c1598040..f12663c39ceb 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c @@ -1067,8 +1067,9 @@ static int dss_video_pll_probe(struct platform_device *pdev) }

/* DSS HW IP initialisation */ -static int dss_bind(struct device *dev) +static int dss_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct platform_device *pdev = to_platform_device(dev); struct resource *dss_mem; u32 rev; @@ -1167,8 +1168,9 @@ static int dss_bind(struct device *dev) return r; }

-static void dss_unbind(struct device *dev) +static void dss_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct platform_device *pdev = to_platform_device(dev);

dss_initialized = false; @@ -1188,9 +1190,13 @@ static void dss_unbind(struct device *dev) dss_put_clocks(); }

-static const struct component_master_ops dss_component_ops = { - .bind = dss_bind, - .unbind = dss_unbind, +static struct aggregate_driver dss_aggregate_driver = { + .probe = dss_bind, + .remove = dss_unbind, + .driver = { + .name = "dss_fbdev", + .owner = THIS_MODULE, + }, };

static int dss_component_compare(struct device *dev, void *data) @@ -1225,7 +1231,7 @@ static int dss_probe(struct platform_device *pdev) /* add all the child devices as components */ device_for_each_child(&pdev->dev, &match, dss_add_child_component);

- r = component_master_add_with_match(&pdev->dev, &dss_component_ops, match); + r = component_aggregate_register(&pdev->dev, &dss_aggregate_driver, match); if (r) return r;

@@ -1234,7 +1240,7 @@ static int dss_probe(struct platform_device *pdev)

static int dss_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &dss_component_ops); + component_aggregate_unregister(&pdev->dev, &dss_aggregate_driver); return 0; }

Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device.

Cc: Mark Brown broonie@kernel.org Cc: Jaroslav Kysela perex@perex.cz Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- sound/soc/codecs/wcd938x.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c index f0daf8defcf1..6033de7f57ef 100644 --- a/sound/soc/codecs/wcd938x.c +++ b/sound/soc/codecs/wcd938x.c @@ -4316,8 +4316,9 @@ static struct snd_soc_dai_driver wcd938x_dais[] = { }, };

-static int wcd938x_bind(struct device *dev) +static int wcd938x_bind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct wcd938x_priv *wcd938x = dev_get_drvdata(dev); int ret;

@@ -4400,8 +4401,9 @@ static int wcd938x_bind(struct device *dev)

}

-static void wcd938x_unbind(struct device *dev) +static void wcd938x_unbind(struct aggregate_device *adev) { + struct device *dev = adev->parent; struct wcd938x_priv *wcd938x = dev_get_drvdata(dev);

device_link_remove(dev, wcd938x->txdev); @@ -4411,9 +4413,13 @@ static void wcd938x_unbind(struct device *dev) component_unbind_all(dev, wcd938x); }

-static const struct component_master_ops wcd938x_comp_ops = { - .bind = wcd938x_bind, - .unbind = wcd938x_unbind, +static struct aggregate_driver wcd938x_aggregate_driver = { + .probe = wcd938x_bind, + .remove = wcd938x_unbind, + .driver = { + .name = "wcd938x_snd", + .owner = THIS_MODULE, + }, };

static int wcd938x_compare_of(struct device *dev, void *data) @@ -4482,7 +4488,7 @@ static int wcd938x_probe(struct platform_device *pdev)

wcd938x_reset(wcd938x);

- ret = component_master_add_with_match(dev, &wcd938x_comp_ops, match); + ret = component_aggregate_register(dev, &wcd938x_aggregate_driver, match); if (ret) return ret;

@@ -4498,7 +4504,7 @@ static int wcd938x_probe(struct platform_device *pdev)

static int wcd938x_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &wcd938x_comp_ops); + component_aggregate_unregister(&pdev->dev, &wcd938x_aggregate_driver);

return 0; }

There aren't any users anymore so drop it.

Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Saravana Kannan saravanak@google.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/drm_of.c | 87 +++++++++------------------------------- include/drm/drm_of.h | 12 ------ 2 files changed, 20 insertions(+), 79 deletions(-)

diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c index 58db65ad2770..78fe2b809872 100644 --- a/drivers/gpu/drm/drm_of.c +++ b/drivers/gpu/drm/drm_of.c @@ -99,18 +99,30 @@ void drm_of_component_match_add(struct device *master, } EXPORT_SYMBOL_GPL(drm_of_component_match_add);

-static int _drm_of_component_probe(struct device *dev, - int (*compare_of)(struct device *, void *), - struct component_match **matchptr) +/** + * drm_of_aggregate_probe - Generic probe function for a component based aggregate host + * @dev: device containing the OF node + * @compare_of: compare function used for matching components + * @adrv: aggregate driver to be used + * + * Parse the platform device OF node and bind all the components associated + * with the aggregate device. Interface ports are added before the encoders in + * order to satisfy their .bind_component requirements + * See Documentation/devicetree/bindings/graph.txt for the bindings. + * + * Returns zero if successful, or one of the standard error codes if it fails. + */ +static int drm_of_aggregate_probe(struct device *dev, + int (*compare_of)(struct device *, void *), + struct aggregate_driver *adrv) { struct device_node *ep, *port, *remote; + struct component_match *match = NULL; int i;

if (!dev->of_node) return -EINVAL;

- *matchptr = NULL; - /* * Bind the crtc's ports first, so that drm_of_find_possible_crtcs() * called from encoder's .bind callbacks works as expected @@ -121,7 +133,7 @@ static int _drm_of_component_probe(struct device *dev, break;

if (of_device_is_available(port->parent)) - drm_of_component_match_add(dev, matchptr, compare_of, + drm_of_component_match_add(dev, &match, compare_of, port);

of_node_put(port); @@ -132,7 +144,7 @@ static int _drm_of_component_probe(struct device *dev, return -ENODEV; }

- if (!*matchptr) { + if (!match) { dev_err(dev, "no available port\n"); return -ENODEV; } @@ -162,72 +174,13 @@ static int _drm_of_component_probe(struct device *dev, continue; }

- drm_of_component_match_add(dev, matchptr, compare_of, + drm_of_component_match_add(dev, &match, compare_of, remote); of_node_put(remote); } of_node_put(port); }

- return 0; -} - -/** - * drm_of_component_probe - Generic probe function for a component based master - * @dev: master device containing the OF node - * @compare_of: compare function used for matching components - * @m_ops: component master ops to be used - * - * Parse the platform device OF node and bind all the components associated - * with the master. Interface ports are added before the encoders in order to - * satisfy their .bind requirements - * See Documentation/devicetree/bindings/graph.txt for the bindings. - * - * Deprecated: Use drm_of_aggregate_probe() instead. - * - * Returns zero if successful, or one of the standard error codes if it fails. - */ -static int drm_of_component_probe(struct device *dev, - int (*compare_of)(struct device *, void *), - const struct component_master_ops *m_ops) -{ - - struct component_match *match; - int ret; - - ret = _drm_of_component_probe(dev, compare_of, &match); - if (ret) - return ret; - - return component_master_add_with_match(dev, m_ops, match); -} -EXPORT_SYMBOL(drm_of_component_probe); - - -/** - * drm_of_aggregate_probe - Generic probe function for a component based aggregate host - * @dev: device containing the OF node - * @compare_of: compare function used for matching components - * @adrv: aggregate driver to be used - * - * Parse the platform device OF node and bind all the components associated - * with the aggregate device. Interface ports are added before the encoders in - * order to satisfy their .bind_component requirements - * See Documentation/devicetree/bindings/graph.txt for the bindings. - * - * Returns zero if successful, or one of the standard error codes if it fails. - */ -static int drm_of_aggregate_probe(struct device *dev, - int (*compare_of)(struct device *, void *), - struct aggregate_driver *adrv) -{ - struct component_match *match; - int ret; - - ret = _drm_of_component_probe(dev, compare_of, &match); - if (ret) - return ret; - return component_aggregate_register(dev, adrv, match); } EXPORT_SYMBOL(drm_of_aggregate_probe); diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h index c3ec9b14df48..447568992294 100644 --- a/include/drm/drm_of.h +++ b/include/drm/drm_of.h @@ -7,7 +7,6 @@ #include <drm/drm_bridge.h> #endif

-struct component_master_ops; struct component_match; struct device; struct drm_device; @@ -37,9 +36,6 @@ void drm_of_component_match_add(struct device *master, struct component_match **matchptr, int (*compare)(struct device *, void *), struct device_node *node); -int drm_of_component_probe(struct device *dev, - int (*compare_of)(struct device *, void *), - const struct component_master_ops *m_ops); int drm_of_aggregate_probe(struct device *dev, int (*compare_of)(struct device *, void *), struct aggregate_driver *adrv); @@ -73,14 +69,6 @@ drm_of_component_match_add(struct device *master, { }

-static inline int -drm_of_component_probe(struct device *dev, - int (*compare_of)(struct device *, void *), - const struct component_master_ops *m_ops) -{ - return -EINVAL; -} - static inline int drm_of_aggregate_probe(struct device *dev, int (*compare_of)(struct device *, void *),