* [PATCH v6 1/8] drm/i915/intel_hdmi: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 2/8] dw-hdmi-cec: use cec_notifier_cec_adap_(un)register Dariusz Marcinkiewicz
` (6 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Jani Nikula, Joonas Lahtinen,
Rodrigo Vivi, David Airlie, Daniel Vetter,
Ville Syrjälä,
Chris Wilson, Maarten Lankhorst, Shashank Sharma, Ramalingam C,
open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill in
the cec_connector_info.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/i915/display/intel_hdmi.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index b1ca8e5bdb56d..9fcf2c58c29c5 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2752,8 +2752,9 @@ intel_hdmi_connector_register(struct drm_connector *connector)
static void intel_hdmi_destroy(struct drm_connector *connector)
{
- if (intel_attached_hdmi(connector)->cec_notifier)
- cec_notifier_put(intel_attached_hdmi(connector)->cec_notifier);
+ struct cec_notifier *n = intel_attached_hdmi(connector)->cec_notifier;
+
+ cec_notifier_conn_unregister(n);
intel_connector_destroy(connector);
}
@@ -3068,6 +3069,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
struct drm_device *dev = intel_encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum port port = intel_encoder->port;
+ struct cec_connector_info conn_info;
DRM_DEBUG_KMS("Adding HDMI connector on port %c\n",
port_name(port));
@@ -3120,8 +3122,11 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
}
- intel_hdmi->cec_notifier = cec_notifier_get_conn(dev->dev,
- port_identifier(port));
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ intel_hdmi->cec_notifier =
+ cec_notifier_conn_register(dev->dev, port_identifier(port),
+ &conn_info);
if (!intel_hdmi->cec_notifier)
DRM_DEBUG_KMS("CEC notifier get failed\n");
}
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v6 2/8] dw-hdmi-cec: use cec_notifier_cec_adap_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 1/8] drm/i915/intel_hdmi: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 3/8] tda9950: " Dariusz Marcinkiewicz
` (5 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, Enrico Weigelt, Kate Stewart, Thomas Gleixner,
open list
Use the new cec_notifier_cec_adap_(un)register() functions to
(un)register the notifier for the CEC adapter.
Also adds CEC_CAP_CONNECTOR_INFO capability to the adapter.
Changes since v3:
- add CEC_CAP_CONNECTOR_INFO to cec_allocate_adapter,
- replace CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
CEC_CAP_RC | CEC_CAP_PASSTHROUGH with CEC_CAP_DEFAULTS.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
index 0f949978d3fcd..ac1e001d08829 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
@@ -256,8 +256,8 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
dw_hdmi_write(cec, 0, HDMI_CEC_POLARITY);
cec->adap = cec_allocate_adapter(&dw_hdmi_cec_ops, cec, "dw_hdmi",
- CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
- CEC_CAP_RC | CEC_CAP_PASSTHROUGH,
+ CEC_CAP_DEFAULTS |
+ CEC_CAP_CONNECTOR_INFO,
CEC_MAX_LOG_ADDRS);
if (IS_ERR(cec->adap))
return PTR_ERR(cec->adap);
@@ -278,13 +278,14 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
- cec->notify = cec_notifier_get(pdev->dev.parent);
+ cec->notify = cec_notifier_cec_adap_register(pdev->dev.parent,
+ NULL, cec->adap);
if (!cec->notify)
return -ENOMEM;
ret = cec_register_adapter(cec->adap, pdev->dev.parent);
if (ret < 0) {
- cec_notifier_put(cec->notify);
+ cec_notifier_cec_adap_unregister(cec->notify);
return ret;
}
@@ -294,8 +295,6 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
*/
devm_remove_action(&pdev->dev, dw_hdmi_cec_del, cec);
- cec_register_cec_notifier(cec->adap, cec->notify);
-
return 0;
}
@@ -303,8 +302,8 @@ static int dw_hdmi_cec_remove(struct platform_device *pdev)
{
struct dw_hdmi_cec *cec = platform_get_drvdata(pdev);
+ cec_notifier_cec_adap_unregister(cec->notify);
cec_unregister_adapter(cec->adap);
- cec_notifier_put(cec->notify);
return 0;
}
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v6 3/8] tda9950: use cec_notifier_cec_adap_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 1/8] drm/i915/intel_hdmi: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 2/8] dw-hdmi-cec: use cec_notifier_cec_adap_(un)register Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:32 ` Russell King - ARM Linux admin
2019-08-13 11:02 ` [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
` (4 subsequent siblings)
7 siblings, 1 reply; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, David Airlie, Daniel Vetter, Russell King,
Hans Verkuil, Kate Stewart, Allison Randal, Thomas Gleixner,
Kees Cook, Colin Ian King, open list
Use the new cec_notifier_cec_adap_(un)register() functions to
(un)register the notifier for the CEC adapter.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/i2c/tda9950.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
index 8039fc0d83db4..a5a75bdeb7a5f 100644
--- a/drivers/gpu/drm/i2c/tda9950.c
+++ b/drivers/gpu/drm/i2c/tda9950.c
@@ -420,7 +420,8 @@ static int tda9950_probe(struct i2c_client *client,
priv->hdmi = glue->parent;
priv->adap = cec_allocate_adapter(&tda9950_cec_ops, priv, "tda9950",
- CEC_CAP_DEFAULTS,
+ CEC_CAP_DEFAULTS |
+ CEC_CAP_CONNECTOR_INFO,
CEC_MAX_LOG_ADDRS);
if (IS_ERR(priv->adap))
return PTR_ERR(priv->adap);
@@ -457,13 +458,14 @@ static int tda9950_probe(struct i2c_client *client,
if (ret < 0)
return ret;
- priv->notify = cec_notifier_get(priv->hdmi);
+ priv->notify = cec_notifier_cec_adap_register(priv->hdmi, NULL,
+ priv->adap);
if (!priv->notify)
return -ENOMEM;
ret = cec_register_adapter(priv->adap, priv->hdmi);
if (ret < 0) {
- cec_notifier_put(priv->notify);
+ cec_notifier_cec_adap_unregister(priv->notify);
return ret;
}
@@ -473,8 +475,6 @@ static int tda9950_probe(struct i2c_client *client,
*/
devm_remove_action(dev, tda9950_cec_del, priv);
- cec_register_cec_notifier(priv->adap, priv->notify);
-
return 0;
}
@@ -482,8 +482,8 @@ static int tda9950_remove(struct i2c_client *client)
{
struct tda9950_priv *priv = i2c_get_clientdata(client);
+ cec_notifier_cec_adap_unregister(priv->notify);
cec_unregister_adapter(priv->adap);
- cec_notifier_put(priv->notify);
return 0;
}
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [PATCH v6 3/8] tda9950: use cec_notifier_cec_adap_(un)register
2019-08-13 11:02 ` [PATCH v6 3/8] tda9950: " Dariusz Marcinkiewicz
@ 2019-08-13 11:32 ` Russell King - ARM Linux admin
2019-08-13 11:44 ` Hans Verkuil
0 siblings, 1 reply; 15+ messages in thread
From: Russell King - ARM Linux admin @ 2019-08-13 11:32 UTC (permalink / raw)
To: Dariusz Marcinkiewicz
Cc: dri-devel, linux-media, hverkuil-cisco, David Airlie,
Daniel Vetter, Hans Verkuil, Kate Stewart, Allison Randal,
Thomas Gleixner, Kees Cook, Colin Ian King, open list
On Tue, Aug 13, 2019 at 01:02:35PM +0200, Dariusz Marcinkiewicz wrote:
> Use the new cec_notifier_cec_adap_(un)register() functions to
> (un)register the notifier for the CEC adapter.
>
> Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> drivers/gpu/drm/i2c/tda9950.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
> index 8039fc0d83db4..a5a75bdeb7a5f 100644
> --- a/drivers/gpu/drm/i2c/tda9950.c
> +++ b/drivers/gpu/drm/i2c/tda9950.c
> @@ -420,7 +420,8 @@ static int tda9950_probe(struct i2c_client *client,
> priv->hdmi = glue->parent;
>
> priv->adap = cec_allocate_adapter(&tda9950_cec_ops, priv, "tda9950",
> - CEC_CAP_DEFAULTS,
> + CEC_CAP_DEFAULTS |
> + CEC_CAP_CONNECTOR_INFO,
> CEC_MAX_LOG_ADDRS);
> if (IS_ERR(priv->adap))
> return PTR_ERR(priv->adap);
> @@ -457,13 +458,14 @@ static int tda9950_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> - priv->notify = cec_notifier_get(priv->hdmi);
> + priv->notify = cec_notifier_cec_adap_register(priv->hdmi, NULL,
> + priv->adap);
> if (!priv->notify)
> return -ENOMEM;
>
> ret = cec_register_adapter(priv->adap, priv->hdmi);
> if (ret < 0) {
> - cec_notifier_put(priv->notify);
> + cec_notifier_cec_adap_unregister(priv->notify);
> return ret;
> }
>
> @@ -473,8 +475,6 @@ static int tda9950_probe(struct i2c_client *client,
> */
> devm_remove_action(dev, tda9950_cec_del, priv);
>
> - cec_register_cec_notifier(priv->adap, priv->notify);
> -
> return 0;
> }
>
> @@ -482,8 +482,8 @@ static int tda9950_remove(struct i2c_client *client)
> {
> struct tda9950_priv *priv = i2c_get_clientdata(client);
>
> + cec_notifier_cec_adap_unregister(priv->notify);
> cec_unregister_adapter(priv->adap);
> - cec_notifier_put(priv->notify);
It looks weird to have an unexpectedly different ordering of
unregistration from the registration path - normally, unregistration
is the reverse order of initialisation.
In the initialisation path, it seems that we register the notifier
and _then_ the adapter. Here, we unregister the notifier and then
the adapter rather than what would normally be expected. Why is
this? I suspect there will be drivers created that do this the
"normal" way round, so if this is a requirement, it needs to be made
plainly obvious.
>
> return 0;
> }
> --
> 2.23.0.rc1.153.gdeed80330f-goog
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v6 3/8] tda9950: use cec_notifier_cec_adap_(un)register
2019-08-13 11:32 ` Russell King - ARM Linux admin
@ 2019-08-13 11:44 ` Hans Verkuil
0 siblings, 0 replies; 15+ messages in thread
From: Hans Verkuil @ 2019-08-13 11:44 UTC (permalink / raw)
To: Russell King - ARM Linux admin, Dariusz Marcinkiewicz
Cc: dri-devel, linux-media, David Airlie, Daniel Vetter,
Hans Verkuil, Kate Stewart, Allison Randal, Thomas Gleixner,
Kees Cook, Colin Ian King, open list
On 8/13/19 1:32 PM, Russell King - ARM Linux admin wrote:
> On Tue, Aug 13, 2019 at 01:02:35PM +0200, Dariusz Marcinkiewicz wrote:
>> Use the new cec_notifier_cec_adap_(un)register() functions to
>> (un)register the notifier for the CEC adapter.
>>
>> Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> ---
>> drivers/gpu/drm/i2c/tda9950.c | 12 ++++++------
>> 1 file changed, 6 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
>> index 8039fc0d83db4..a5a75bdeb7a5f 100644
>> --- a/drivers/gpu/drm/i2c/tda9950.c
>> +++ b/drivers/gpu/drm/i2c/tda9950.c
>> @@ -420,7 +420,8 @@ static int tda9950_probe(struct i2c_client *client,
>> priv->hdmi = glue->parent;
>>
>> priv->adap = cec_allocate_adapter(&tda9950_cec_ops, priv, "tda9950",
>> - CEC_CAP_DEFAULTS,
>> + CEC_CAP_DEFAULTS |
>> + CEC_CAP_CONNECTOR_INFO,
>> CEC_MAX_LOG_ADDRS);
>> if (IS_ERR(priv->adap))
>> return PTR_ERR(priv->adap);
>> @@ -457,13 +458,14 @@ static int tda9950_probe(struct i2c_client *client,
>> if (ret < 0)
>> return ret;
>>
>> - priv->notify = cec_notifier_get(priv->hdmi);
>> + priv->notify = cec_notifier_cec_adap_register(priv->hdmi, NULL,
>> + priv->adap);
>> if (!priv->notify)
>> return -ENOMEM;
>>
>> ret = cec_register_adapter(priv->adap, priv->hdmi);
>> if (ret < 0) {
>> - cec_notifier_put(priv->notify);
>> + cec_notifier_cec_adap_unregister(priv->notify);
>> return ret;
>> }
>>
>> @@ -473,8 +475,6 @@ static int tda9950_probe(struct i2c_client *client,
>> */
>> devm_remove_action(dev, tda9950_cec_del, priv);
>>
>> - cec_register_cec_notifier(priv->adap, priv->notify);
>> -
>> return 0;
>> }
>>
>> @@ -482,8 +482,8 @@ static int tda9950_remove(struct i2c_client *client)
>> {
>> struct tda9950_priv *priv = i2c_get_clientdata(client);
>>
>> + cec_notifier_cec_adap_unregister(priv->notify);
>> cec_unregister_adapter(priv->adap);
>> - cec_notifier_put(priv->notify);
>
> It looks weird to have an unexpectedly different ordering of
> unregistration from the registration path - normally, unregistration
> is the reverse order of initialisation.
>
> In the initialisation path, it seems that we register the notifier
> and _then_ the adapter. Here, we unregister the notifier and then
> the adapter rather than what would normally be expected. Why is
> this? I suspect there will be drivers created that do this the
> "normal" way round, so if this is a requirement, it needs to be made
> plainly obvious.
It's not a requirement, it just feels better to do it in this order
since cec_unregister_adapter will in general also delete the adapter
(unless an application keeps the cec device open).
So the order is actually: allocate_adapter, then register notifier
and: unregister notifier, then unregister (and typically delete) adapter
Regards,
Hans
>
>>
>> return 0;
>> }
>> --
>> 2.23.0.rc1.153.gdeed80330f-goog
>>
>>
>
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
` (2 preceding siblings ...)
2019-08-13 11:02 ` [PATCH v6 3/8] tda9950: " Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:20 ` Russell King - ARM Linux admin
2019-08-13 11:02 ` [PATCH v6 5/8] drm: sti: " Dariusz Marcinkiewicz
` (3 subsequent siblings)
7 siblings, 1 reply; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Russell King, David Airlie, Daniel Vetter,
open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill
in the cec_connector_info.
Changes since v2:
- cec_notifier_phys_addr_invalidate where appropriate,
- don't check for NULL notifier before calling
cec_notifier_conn_unregister.
Changes since v1:
Add memory barrier to make sure that the notifier
becomes visible to the irq thread once it is
fully constructed.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 33 +++++++++++++++++++++----------
1 file changed, 23 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 61e042918a7fc..19a63ee1b3f53 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -804,9 +804,14 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data)
if (lvl & CEC_RXSHPDLEV_HPD) {
tda998x_edid_delay_start(priv);
} else {
+ struct cec_notifier *notify;
+
schedule_work(&priv->detect_work);
- cec_notifier_set_phys_addr(priv->cec_notify,
- CEC_PHYS_ADDR_INVALID);
+
+ notify = READ_ONCE(priv->cec_notify);
+ if (notify)
+ cec_notifier_phys_addr_invalidate(
+ notify);
}
handled = true;
@@ -1331,6 +1336,8 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
struct drm_device *drm)
{
struct drm_connector *connector = &priv->connector;
+ struct cec_connector_info conn_info;
+ struct cec_notifier *notifier;
int ret;
connector->interlace_allowed = 1;
@@ -1347,6 +1354,19 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
if (ret)
return ret;
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ notifier = cec_notifier_conn_register(priv->cec_glue.parent,
+ NULL, &conn_info);
+ if (!notifier)
+ return -ENOMEM;
+ /*
+ * Make sure that tda998x_irq_thread does see the notifier
+ * when it fully constructed.
+ */
+ smp_wmb();
+ priv->cec_notify = notifier;
+
drm_connector_attach_encoder(&priv->connector,
priv->bridge.encoder);
@@ -1790,8 +1810,7 @@ static void tda998x_destroy(struct device *dev)
i2c_unregister_device(priv->cec);
- if (priv->cec_notify)
- cec_notifier_put(priv->cec_notify);
+ cec_notifier_conn_unregister(priv->cec_notify);
}
static int tda998x_create(struct device *dev)
@@ -1916,12 +1935,6 @@ static int tda998x_create(struct device *dev)
cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
}
- priv->cec_notify = cec_notifier_get(dev);
- if (!priv->cec_notify) {
- ret = -ENOMEM;
- goto fail;
- }
-
priv->cec_glue.parent = dev;
priv->cec_glue.data = priv;
priv->cec_glue.init = tda998x_cec_hook_init;
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register
2019-08-13 11:02 ` [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
@ 2019-08-13 11:20 ` Russell King - ARM Linux admin
2019-08-14 10:52 ` Dariusz Marcinkiewicz
0 siblings, 1 reply; 15+ messages in thread
From: Russell King - ARM Linux admin @ 2019-08-13 11:20 UTC (permalink / raw)
To: Dariusz Marcinkiewicz
Cc: dri-devel, linux-media, hverkuil-cisco, David Airlie,
Daniel Vetter, open list
On Tue, Aug 13, 2019 at 01:02:36PM +0200, Dariusz Marcinkiewicz wrote:
> Use the new cec_notifier_conn_(un)register() functions to
> (un)register the notifier for the HDMI connector, and fill
> in the cec_connector_info.
>
> Changes since v2:
> - cec_notifier_phys_addr_invalidate where appropriate,
> - don't check for NULL notifier before calling
> cec_notifier_conn_unregister.
> Changes since v1:
> Add memory barrier to make sure that the notifier
> becomes visible to the irq thread once it is
> fully constructed.
>
> Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
> Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> drivers/gpu/drm/i2c/tda998x_drv.c | 33 +++++++++++++++++++++----------
> 1 file changed, 23 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
> index 61e042918a7fc..19a63ee1b3f53 100644
> --- a/drivers/gpu/drm/i2c/tda998x_drv.c
> +++ b/drivers/gpu/drm/i2c/tda998x_drv.c
> @@ -804,9 +804,14 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data)
> if (lvl & CEC_RXSHPDLEV_HPD) {
> tda998x_edid_delay_start(priv);
> } else {
> + struct cec_notifier *notify;
> +
> schedule_work(&priv->detect_work);
> - cec_notifier_set_phys_addr(priv->cec_notify,
> - CEC_PHYS_ADDR_INVALID);
> +
> + notify = READ_ONCE(priv->cec_notify);
> + if (notify)
> + cec_notifier_phys_addr_invalidate(
> + notify);
> }
>
> handled = true;
> @@ -1331,6 +1336,8 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
> struct drm_device *drm)
> {
> struct drm_connector *connector = &priv->connector;
> + struct cec_connector_info conn_info;
> + struct cec_notifier *notifier;
> int ret;
>
> connector->interlace_allowed = 1;
> @@ -1347,6 +1354,19 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
> if (ret)
> return ret;
>
> + cec_fill_conn_info_from_drm(&conn_info, connector);
> +
> + notifier = cec_notifier_conn_register(priv->cec_glue.parent,
> + NULL, &conn_info);
> + if (!notifier)
> + return -ENOMEM;
> + /*
> + * Make sure that tda998x_irq_thread does see the notifier
> + * when it fully constructed.
> + */
> + smp_wmb();
> + priv->cec_notify = notifier;
To nitpick, this comment and the following code do not go together.
I think what you actually mean is:
* Make sure that tda998x_irq_thread sees the notifier
* only after it is fully constructed.
> +
> drm_connector_attach_encoder(&priv->connector,
> priv->bridge.encoder);
>
> @@ -1790,8 +1810,7 @@ static void tda998x_destroy(struct device *dev)
>
> i2c_unregister_device(priv->cec);
>
> - if (priv->cec_notify)
> - cec_notifier_put(priv->cec_notify);
> + cec_notifier_conn_unregister(priv->cec_notify);
This also doesn't make sense: tda998x_destroy() is the opposite of
tda998x_create(). However, tda998x_connector_destroy() is the
opposite of tda998x_connector_create().
By moving the CEC creation code into tda998x_connector_create(), you
are creating the possibility for the following sequence to mess up
CEC and leak:
tda998x_create()
tda998x_connector_create()
tda998x_connector_destroy()
tda998x_connector_create()
tda998x_connector_destroy()
tda998x_destroy()
Anything you create in tda998x_connector_create() must be cleaned up
by tda998x_connector_destroy().
> }
>
> static int tda998x_create(struct device *dev)
> @@ -1916,12 +1935,6 @@ static int tda998x_create(struct device *dev)
> cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
> }
>
> - priv->cec_notify = cec_notifier_get(dev);
> - if (!priv->cec_notify) {
> - ret = -ENOMEM;
> - goto fail;
> - }
> -
> priv->cec_glue.parent = dev;
> priv->cec_glue.data = priv;
> priv->cec_glue.init = tda998x_cec_hook_init;
> --
> 2.23.0.rc1.153.gdeed80330f-goog
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register
2019-08-13 11:20 ` Russell King - ARM Linux admin
@ 2019-08-14 10:52 ` Dariusz Marcinkiewicz
0 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-14 10:52 UTC (permalink / raw)
To: Russell King - ARM Linux admin
Cc: dri-devel, linux-media, Hans Verkuil, David Airlie,
Daniel Vetter, open list
Hello.
On Tue, Aug 13, 2019 at 1:20 PM Russell King - ARM Linux admin
<linux@armlinux.org.uk> wrote:
>
> This also doesn't make sense: tda998x_destroy() is the opposite of
> tda998x_create(). However, tda998x_connector_destroy() is the
> opposite of tda998x_connector_create().
>
> By moving the CEC creation code into tda998x_connector_create(), you
> are creating the possibility for the following sequence to mess up
> CEC and leak:
>
> tda998x_create()
> tda998x_connector_create()
> tda998x_connector_destroy()
> tda998x_connector_create()
> tda998x_connector_destroy()
> tda998x_destroy()
>
> Anything you create in tda998x_connector_create() must be cleaned up
> by tda998x_connector_destroy().
>
Thank you.
I've just sent out another revision of the patch, where registration
and deregistration is symmetric. Please take a look.
Best regards.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v6 5/8] drm: sti: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
` (3 preceding siblings ...)
2019-08-13 11:02 ` [PATCH v6 4/8] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 6/8] drm: tegra: " Dariusz Marcinkiewicz
` (2 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Benjamin Gaignard, Vincent Abriou,
David Airlie, Daniel Vetter, open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill
in the cec_connector_info.
Changes since v2:
Don't invalidate physical address before unregistering the
notifier.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
---
drivers/gpu/drm/sti/sti_hdmi.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index 9862c322f0c4a..bd15902b825ad 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -1256,6 +1256,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
struct drm_device *drm_dev = data;
struct drm_encoder *encoder;
struct sti_hdmi_connector *connector;
+ struct cec_connector_info conn_info;
struct drm_connector *drm_connector;
struct drm_bridge *bridge;
int err;
@@ -1318,6 +1319,14 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
goto err_sysfs;
}
+ cec_fill_conn_info_from_drm(&conn_info, drm_connector);
+ hdmi->notifier = cec_notifier_conn_register(&hdmi->dev, NULL,
+ &conn_info);
+ if (!hdmi->notifier) {
+ hdmi->drm_connector = NULL;
+ return -ENOMEM;
+ }
+
/* Enable default interrupts */
hdmi_write(hdmi, HDMI_DEFAULT_INT, HDMI_INT_EN);
@@ -1331,6 +1340,9 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
static void sti_hdmi_unbind(struct device *dev,
struct device *master, void *data)
{
+ struct sti_hdmi *hdmi = dev_get_drvdata(dev);
+
+ cec_notifier_conn_unregister(hdmi->notifier);
}
static const struct component_ops sti_hdmi_ops = {
@@ -1436,10 +1448,6 @@ static int sti_hdmi_probe(struct platform_device *pdev)
goto release_adapter;
}
- hdmi->notifier = cec_notifier_get(&pdev->dev);
- if (!hdmi->notifier)
- goto release_adapter;
-
hdmi->reset = devm_reset_control_get(dev, "hdmi");
/* Take hdmi out of reset */
if (!IS_ERR(hdmi->reset))
@@ -1459,14 +1467,11 @@ static int sti_hdmi_remove(struct platform_device *pdev)
{
struct sti_hdmi *hdmi = dev_get_drvdata(&pdev->dev);
- cec_notifier_set_phys_addr(hdmi->notifier, CEC_PHYS_ADDR_INVALID);
-
i2c_put_adapter(hdmi->ddc_adapt);
if (hdmi->audio_pdev)
platform_device_unregister(hdmi->audio_pdev);
component_del(&pdev->dev, &sti_hdmi_ops);
- cec_notifier_put(hdmi->notifier);
return 0;
}
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v6 6/8] drm: tegra: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
` (4 preceding siblings ...)
2019-08-13 11:02 ` [PATCH v6 5/8] drm: sti: " Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 7/8] drm: dw-hdmi: " Dariusz Marcinkiewicz
2019-08-13 11:02 ` [PATCH v6 8/8] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
7 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Thierry Reding, David Airlie,
Daniel Vetter, Jonathan Hunter,
open list:DRM DRIVERS FOR NVIDIA TEGRA, open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill in
the cec_connector_info.
Changes since v4:
- only create a CEC notifier for HDMI connectors
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/tegra/output.c | 28 +++++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index bdcaa4c7168cf..34373734ff689 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -70,6 +70,11 @@ tegra_output_connector_detect(struct drm_connector *connector, bool force)
void tegra_output_connector_destroy(struct drm_connector *connector)
{
+ struct tegra_output *output = connector_to_output(connector);
+
+ if (output->cec)
+ cec_notifier_conn_unregister(output->cec);
+
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
}
@@ -163,18 +168,11 @@ int tegra_output_probe(struct tegra_output *output)
disable_irq(output->hpd_irq);
}
- output->cec = cec_notifier_get(output->dev);
- if (!output->cec)
- return -ENOMEM;
-
return 0;
}
void tegra_output_remove(struct tegra_output *output)
{
- if (output->cec)
- cec_notifier_put(output->cec);
-
if (output->hpd_gpio)
free_irq(output->hpd_irq, output);
@@ -184,6 +182,7 @@ void tegra_output_remove(struct tegra_output *output)
int tegra_output_init(struct drm_device *drm, struct tegra_output *output)
{
+ int connector_type;
int err;
if (output->panel) {
@@ -199,6 +198,21 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output)
if (output->hpd_gpio)
enable_irq(output->hpd_irq);
+ connector_type = output->connector.connector_type;
+ /*
+ * Create a CEC notifier for HDMI connector.
+ */
+ if (connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+ struct cec_connector_info conn_info;
+
+ cec_fill_conn_info_from_drm(&conn_info, &output->connector);
+ output->cec = cec_notifier_conn_register(output->dev, NULL,
+ &conn_info);
+ if (!output->cec)
+ return -ENOMEM;
+ }
+
return 0;
}
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v6 7/8] drm: dw-hdmi: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
` (5 preceding siblings ...)
2019-08-13 11:02 ` [PATCH v6 6/8] drm: tegra: " Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
2019-08-13 11:37 ` Hans Verkuil
2019-08-13 11:02 ` [PATCH v6 8/8] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
7 siblings, 1 reply; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, Sam Ravnborg, Douglas Anderson, open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill in
the cec_connector_info.
Changes since v4:
- typo fix
Changes since v2:
- removed unnecessary NULL check before a call to
cec_notifier_conn_unregister,
- use cec_notifier_phys_addr_invalidate to invalidate physical
address.
Changes since v1:
Add memory barrier to make sure that the notifier
becomes visible to the irq thread once it is fully
constructed.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 36 ++++++++++++++---------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 83b94b66e464e..c00184700bb9d 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2194,6 +2194,8 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
struct dw_hdmi *hdmi = bridge->driver_private;
struct drm_encoder *encoder = bridge->encoder;
struct drm_connector *connector = &hdmi->connector;
+ struct cec_connector_info conn_info;
+ struct cec_notifier *notifier;
connector->interlace_allowed = 1;
connector->polled = DRM_CONNECTOR_POLL_HPD;
@@ -2207,6 +2209,18 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
drm_connector_attach_encoder(connector, encoder);
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
+ if (!notifier)
+ return -ENOMEM;
+ /*
+ * Make sure that dw_hdmi_irq thread does see the notifier
+ * when it fully constructed.
+ */
+ smp_wmb();
+ hdmi->cec_notifier = notifier;
+
return 0;
}
@@ -2373,9 +2387,13 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
phy_stat & HDMI_PHY_HPD,
phy_stat & HDMI_PHY_RX_SENSE);
- if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
- cec_notifier_set_phys_addr(hdmi->cec_notifier,
- CEC_PHYS_ADDR_INVALID);
+ if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
+ struct cec_notifier *notifier;
+
+ notifier = READ_ONCE(hdmi->cec_notifier);
+ if (notifier)
+ cec_notifier_phys_addr_invalidate(notifier);
+ }
}
if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
@@ -2693,12 +2711,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
if (ret)
goto err_iahb;
- hdmi->cec_notifier = cec_notifier_get(dev);
- if (!hdmi->cec_notifier) {
- ret = -ENOMEM;
- goto err_iahb;
- }
-
/*
* To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
* N and cts values before enabling phy
@@ -2796,9 +2808,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
hdmi->ddc = NULL;
}
- if (hdmi->cec_notifier)
- cec_notifier_put(hdmi->cec_notifier);
-
clk_disable_unprepare(hdmi->iahb_clk);
if (hdmi->cec_clk)
clk_disable_unprepare(hdmi->cec_clk);
@@ -2820,8 +2829,7 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
/* Disable all interrupts */
hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
- if (hdmi->cec_notifier)
- cec_notifier_put(hdmi->cec_notifier);
+ cec_notifier_conn_unregister(hdmi->cec_notifier);
clk_disable_unprepare(hdmi->iahb_clk);
clk_disable_unprepare(hdmi->isfr_clk);
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [PATCH v6 7/8] drm: dw-hdmi: use cec_notifier_conn_(un)register
2019-08-13 11:02 ` [PATCH v6 7/8] drm: dw-hdmi: " Dariusz Marcinkiewicz
@ 2019-08-13 11:37 ` Hans Verkuil
2019-08-14 10:49 ` Dariusz Marcinkiewicz
0 siblings, 1 reply; 15+ messages in thread
From: Hans Verkuil @ 2019-08-13 11:37 UTC (permalink / raw)
To: Dariusz Marcinkiewicz, dri-devel, linux-media
Cc: Andrzej Hajda, Neil Armstrong, Laurent Pinchart, Jonas Karlman,
Jernej Skrabec, David Airlie, Daniel Vetter, Sam Ravnborg,
Douglas Anderson, open list
On 8/13/19 1:02 PM, Dariusz Marcinkiewicz wrote:
> Use the new cec_notifier_conn_(un)register() functions to
> (un)register the notifier for the HDMI connector, and fill in
> the cec_connector_info.
>
> Changes since v4:
> - typo fix
> Changes since v2:
> - removed unnecessary NULL check before a call to
> cec_notifier_conn_unregister,
> - use cec_notifier_phys_addr_invalidate to invalidate physical
> address.
> Changes since v1:
> Add memory barrier to make sure that the notifier
> becomes visible to the irq thread once it is fully
> constructed.
>
> Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
> Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 36 ++++++++++++++---------
> 1 file changed, 22 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 83b94b66e464e..c00184700bb9d 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -2194,6 +2194,8 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
> struct dw_hdmi *hdmi = bridge->driver_private;
> struct drm_encoder *encoder = bridge->encoder;
> struct drm_connector *connector = &hdmi->connector;
> + struct cec_connector_info conn_info;
> + struct cec_notifier *notifier;
>
> connector->interlace_allowed = 1;
> connector->polled = DRM_CONNECTOR_POLL_HPD;
> @@ -2207,6 +2209,18 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
>
> drm_connector_attach_encoder(connector, encoder);
>
> + cec_fill_conn_info_from_drm(&conn_info, connector);
> +
> + notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
> + if (!notifier)
> + return -ENOMEM;
> + /*
> + * Make sure that dw_hdmi_irq thread does see the notifier
> + * when it fully constructed.
> + */
> + smp_wmb();
> + hdmi->cec_notifier = notifier;
> +
> return 0;
> }
>
> @@ -2373,9 +2387,13 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
> phy_stat & HDMI_PHY_HPD,
> phy_stat & HDMI_PHY_RX_SENSE);
>
> - if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
> - cec_notifier_set_phys_addr(hdmi->cec_notifier,
> - CEC_PHYS_ADDR_INVALID);
> + if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
> + struct cec_notifier *notifier;
> +
> + notifier = READ_ONCE(hdmi->cec_notifier);
> + if (notifier)
> + cec_notifier_phys_addr_invalidate(notifier);
> + }
> }
>
> if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
> @@ -2693,12 +2711,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
> if (ret)
> goto err_iahb;
>
> - hdmi->cec_notifier = cec_notifier_get(dev);
> - if (!hdmi->cec_notifier) {
> - ret = -ENOMEM;
> - goto err_iahb;
> - }
> -
> /*
> * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
> * N and cts values before enabling phy
> @@ -2796,9 +2808,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
> hdmi->ddc = NULL;
> }
>
> - if (hdmi->cec_notifier)
> - cec_notifier_put(hdmi->cec_notifier);
> -
> clk_disable_unprepare(hdmi->iahb_clk);
> if (hdmi->cec_clk)
> clk_disable_unprepare(hdmi->cec_clk);
> @@ -2820,8 +2829,7 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
> /* Disable all interrupts */
> hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
>
> - if (hdmi->cec_notifier)
> - cec_notifier_put(hdmi->cec_notifier);
> + cec_notifier_conn_unregister(hdmi->cec_notifier);
Russell's review caused me to take another look at this series, and it made
wonder if cec_notifier_conn_unregister() shouldn't be called from bridge_detach?
Regards,
Hans
>
> clk_disable_unprepare(hdmi->iahb_clk);
> clk_disable_unprepare(hdmi->isfr_clk);
>
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v6 7/8] drm: dw-hdmi: use cec_notifier_conn_(un)register
2019-08-13 11:37 ` Hans Verkuil
@ 2019-08-14 10:49 ` Dariusz Marcinkiewicz
0 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-14 10:49 UTC (permalink / raw)
To: Hans Verkuil
Cc: dri-devel, linux-media, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, Sam Ravnborg, Douglas Anderson, open list
Hi.
On Tue, Aug 13, 2019 at 1:38 PM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
>
> Russell's review caused me to take another look at this series, and it made
> wonder if cec_notifier_conn_unregister() shouldn't be called from bridge_detach?
>
I've sent out v7 of the series where unregistration is done from bridge detach.
Regards.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v6 8/8] drm: exynos: exynos_hdmi: use cec_notifier_conn_(un)register
2019-08-13 11:02 [PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
` (6 preceding siblings ...)
2019-08-13 11:02 ` [PATCH v6 7/8] drm: dw-hdmi: " Dariusz Marcinkiewicz
@ 2019-08-13 11:02 ` Dariusz Marcinkiewicz
7 siblings, 0 replies; 15+ messages in thread
From: Dariusz Marcinkiewicz @ 2019-08-13 11:02 UTC (permalink / raw)
To: dri-devel, linux-media, hverkuil-cisco
Cc: Dariusz Marcinkiewicz, Inki Dae, Joonyoung Shim, Seung-Woo Kim,
Kyungmin Park, David Airlie, Daniel Vetter, Kukjin Kim,
Krzysztof Kozlowski,
moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES,
moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES, open list
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill in
the cec_connector_info.
Changes since v2:
- removed unnecessary call to invalidate phys address before
deregistering the notifier,
- use cec_notifier_phys_addr_invalidate instead of setting
invalid address on a notifier.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 31 ++++++++++++++++------------
1 file changed, 18 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index bc1565f1822ab..d532b468d9af5 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -852,6 +852,10 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector,
static void hdmi_connector_destroy(struct drm_connector *connector)
{
+ struct hdmi_context *hdata = connector_to_hdmi(connector);
+
+ cec_notifier_conn_unregister(hdata->notifier);
+
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
}
@@ -935,6 +939,7 @@ static int hdmi_create_connector(struct drm_encoder *encoder)
{
struct hdmi_context *hdata = encoder_to_hdmi(encoder);
struct drm_connector *connector = &hdata->connector;
+ struct cec_connector_info conn_info;
int ret;
connector->interlace_allowed = true;
@@ -957,6 +962,15 @@ static int hdmi_create_connector(struct drm_encoder *encoder)
DRM_DEV_ERROR(hdata->dev, "Failed to attach bridge\n");
}
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ hdata->notifier = cec_notifier_conn_register(hdata->dev, NULL,
+ &conn_info);
+ if (hdata->notifier == NULL) {
+ ret = -ENOMEM;
+ DRM_DEV_ERROR(hdata->dev, "Failed to allocate CEC notifier\n");
+ }
+
return ret;
}
@@ -1528,8 +1542,8 @@ static void hdmi_disable(struct drm_encoder *encoder)
*/
mutex_unlock(&hdata->mutex);
cancel_delayed_work(&hdata->hotplug_work);
- cec_notifier_set_phys_addr(hdata->notifier,
- CEC_PHYS_ADDR_INVALID);
+ if (hdata->notifier)
+ cec_notifier_phys_addr_invalidate(hdata->notifier);
return;
}
@@ -2006,12 +2020,6 @@ static int hdmi_probe(struct platform_device *pdev)
}
}
- hdata->notifier = cec_notifier_get(&pdev->dev);
- if (hdata->notifier == NULL) {
- ret = -ENOMEM;
- goto err_hdmiphy;
- }
-
pm_runtime_enable(dev);
audio_infoframe = &hdata->audio.infoframe;
@@ -2023,7 +2031,7 @@ static int hdmi_probe(struct platform_device *pdev)
ret = hdmi_register_audio_device(hdata);
if (ret)
- goto err_notifier_put;
+ goto err_runtime_disable;
ret = component_add(&pdev->dev, &hdmi_component_ops);
if (ret)
@@ -2034,8 +2042,7 @@ static int hdmi_probe(struct platform_device *pdev)
err_unregister_audio:
platform_device_unregister(hdata->audio.pdev);
-err_notifier_put:
- cec_notifier_put(hdata->notifier);
+err_runtime_disable:
pm_runtime_disable(dev);
err_hdmiphy:
@@ -2054,12 +2061,10 @@ static int hdmi_remove(struct platform_device *pdev)
struct hdmi_context *hdata = platform_get_drvdata(pdev);
cancel_delayed_work_sync(&hdata->hotplug_work);
- cec_notifier_set_phys_addr(hdata->notifier, CEC_PHYS_ADDR_INVALID);
component_del(&pdev->dev, &hdmi_component_ops);
platform_device_unregister(hdata->audio.pdev);
- cec_notifier_put(hdata->notifier);
pm_runtime_disable(&pdev->dev);
if (!IS_ERR(hdata->reg_hdmi_en))
--
2.23.0.rc1.153.gdeed80330f-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread