@@ -699,8 +699,13 @@ 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 */
@@ -765,7 +770,10 @@ 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;
@@ -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 *);
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> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 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 | 14 +++++++++++--- include/linux/component.h | 22 ++++++++++++++++++++++ 2 files changed, 33 insertions(+), 3 deletions(-)