-----Original Message----- From: C, Ramalingam Sent: Thursday, January 31, 2019 12:30 PM To: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; daniel.vetter@ffwll.ch; Winkler, Tomas tomas.winkler@intel.com; Shankar, Uma uma.shankar@intel.com Cc: C, Ramalingam ramalingam.c@intel.com Subject: [PATCH v10 36/40] misc/mei/hdcp: Component framework for I915 Interface
Mei hdcp driver is designed as component slave for the I915 component master.
v2: Rebased. v3: Notifier chain is adopted for cldev state update [Tomas] v4: Made static dummy functions as inline in mei_hdcp.h API for polling client device status IS_ENABLED used in header, for config status for mei_hdcp. v5: Replacing the notifier with component framework. [Daniel] v6: Rebased on the I915 comp master redesign. v7: mei_hdcp_component_registered is made static [Uma] Need for global static variable mei_cldev is removed. v8: master comp is added to be matched with i915 subcomponent [daniel]
Signed-off-by: Ramalingam C ramalingam.c@intel.com Reviewed-by: Uma Shankar uma.shankar@intel.com
This is a new interface change and definitely a lot is changed from the time I reviewed. You can drop my RB and I would suggest to go with Daniel and Tomas's feedback for the same.
drivers/misc/mei/hdcp/mei_hdcp.c | 90 +++++++++++++++++++++++++++++++++++++++- drivers/misc/mei/hdcp/mei_hdcp.h | 5 +++ 2 files changed, 93 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c index edfc70fb0617..be2ce12ca460 100644 --- a/drivers/misc/mei/hdcp/mei_hdcp.c +++ b/drivers/misc/mei/hdcp/mei_hdcp.c @@ -23,6 +23,7 @@ #include <linux/slab.h> #include <linux/uuid.h> #include <linux/mei_cl_bus.h> +#include <linux/component.h> #include <drm/drm_connector.h> #include <drm/i915_component.h> #include <drm/i915_mei_hdcp_interface.h> @@ -692,8 +693,7 @@ mei_close_hdcp_session(struct device *dev, struct hdcp_port_data *data) return 0; }
-static __attribute__((unused)) -struct i915_hdcp_component_ops mei_hdcp_ops = { +static struct i915_hdcp_component_ops mei_hdcp_ops = { .owner = THIS_MODULE, .initiate_hdcp2_session = mei_initiate_hdcp2_session, .verify_receiver_cert_prepare_km = mei_verify_receiver_cert_prepare_km, @@ -708,20 +708,106 @@ struct i915_hdcp_component_ops mei_hdcp_ops = { .close_hdcp_session = mei_close_hdcp_session, };
+static int mei_component_master_bind(struct device *dev) {
- struct mei_cl_device *cldev = to_mei_cl_device(dev);
- struct mei_hdcp_drv_data *drv_data = mei_cldev_get_drvdata(cldev);
- int ret;
- dev_info(dev, "%s\n", __func__);
- drv_data->comp_master->ops = &mei_hdcp_ops;
- drv_data->comp_master->mei_dev = dev;
- ret = component_bind_all(dev, drv_data->comp_master);
- if (ret < 0)
return ret;- return 0;
+}
+static void mei_component_master_unbind(struct device *dev) {
- struct mei_cl_device *cldev = to_mei_cl_device(dev);
- struct mei_hdcp_drv_data *drv_data = mei_cldev_get_drvdata(cldev);
- dev_info(dev, "%s\n", __func__);
- component_unbind_all(dev, drv_data->comp_master); }
+static const struct component_master_ops mei_component_master_ops = {
- .bind = mei_component_master_bind,
- .unbind = mei_component_master_unbind, };
+static int mei_hdcp_component_match(struct device *dev, int subcomponent,
void *data)+{
- return !strcmp(dev->driver->name, "i915") &&
subcomponent == I915_COMPONENT_HDCP; }static int mei_hdcp_probe(struct mei_cl_device *cldev, const struct mei_cl_device_id *id) {
struct mei_hdcp_drv_data *drv_data; int ret;
ret = mei_cldev_enable(cldev); if (ret < 0) dev_err(&cldev->dev, "mei_cldev_enable Failed. %d\n", ret);
drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
if (!drv_data) {
ret = -ENOMEM;goto drv_data_exit;}
drv_data->comp_master = kzalloc(sizeof(*drv_data->comp_master),
GFP_KERNEL);if (!drv_data->comp_master) {
ret = -ENOMEM;goto comp_master_exit;}
drv_data->master_match = NULL;
component_match_add_typed(&cldev->dev, &drv_data->master_match,
mei_hdcp_component_match,drv_data->comp_master);if (IS_ERR_OR_NULL(drv_data->master_match)) {
ret = -ENOMEM;goto match_add_exit;}
mei_cldev_set_drvdata(cldev, drv_data);
ret = component_master_add_with_match(&cldev->dev,
&mei_component_master_ops,drv_data->master_match);if (ret < 0) {
dev_err(&cldev->dev, "Master comp add failed %d\n", ret);mei_cldev_set_drvdata(cldev, NULL);goto match_add_exit;}
return 0;
+match_add_exit:
- kfree(drv_data->comp_master);
+comp_master_exit:
- kfree(drv_data);
+drv_data_exit:
- mei_cldev_disable(cldev);
- return ret;
}
static int mei_hdcp_remove(struct mei_cl_device *cldev) {
- struct mei_hdcp_drv_data *drv_data = mei_cldev_get_drvdata(cldev);
- component_master_del(&cldev->dev, &mei_component_master_ops);
- kfree(drv_data->comp_master);
- kfree(drv_data);
- mei_cldev_set_drvdata(cldev, NULL);
- return mei_cldev_disable(cldev);
}
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h index f831db3cbd54..5c872a57ba11 100644 --- a/drivers/misc/mei/hdcp/mei_hdcp.h +++ b/drivers/misc/mei/hdcp/mei_hdcp.h @@ -363,6 +363,11 @@ struct wired_cmd_repeater_auth_stream_req_out { struct hdcp_port_id port; } __packed;
+struct mei_hdcp_drv_data {
- struct i915_hdcp_comp_master *comp_master;
- struct component_match *master_match;
+};
enum mei_hdcp_ddi { MEI_DDI_INVALID_PORT = 0x0,
-- 2.7.4