linux-kernel - Re: [PATCH v1 2/4] media: ipu3-cio2: Convert to use software_node_register_node

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Date:   Mon, 21 Nov 2022 10:23:16 +0000
From:   Daniel Scally <djrscally@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        Dan Scally <dan.scally@...asonboard.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Clément Léger <clement.leger@...tlin.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Yong Zhi <yong.zhi@...el.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>
Subject: Re: [PATCH v1 2/4] media: ipu3-cio2: Convert to use
 software_node_register_node_group()

Morning

On 21/11/2022 10:22, Hans de Goede wrote:
> Hi Dan,
>
> On 11/21/22 11:19, Dan Scally wrote:
>> Hi Andy
>>
>> On 18/11/2022 18:56, Andy Shevchenko wrote:
>>> The currently used software_node_register_nodes() is going to
>>> be removed. Prepare driver by switchich to new API.
>>>
>>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>>> ---
>>
>> Also looks good to me:
>>
>> Reviewed-by: Daniel Scally <dan.scally@...asonboard.com>
> Any chance you can also give this series a test run on an IPU3 device to
> ensure that it does not cause regressions ?


Sure, wait please...

>
> Regards,
>
> Hans
>
>
>
>>>   drivers/media/pci/intel/ipu3/cio2-bridge.c | 21 ++++++++++++++++++---
>>>   drivers/media/pci/intel/ipu3/cio2-bridge.h |  5 +++--
>>>   2 files changed, 21 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/drivers/media/pci/intel/ipu3/cio2-bridge.c b/drivers/media/pci/intel/ipu3/cio2-bridge.c
>>> index 18974a72e94a..dfefe0d8aa95 100644
>>> --- a/drivers/media/pci/intel/ipu3/cio2-bridge.c
>>> +++ b/drivers/media/pci/intel/ipu3/cio2-bridge.c
>>> @@ -195,6 +195,19 @@ static void cio2_bridge_init_swnode_names(struct cio2_sensor *sensor)
>>>            SWNODE_GRAPH_ENDPOINT_NAME_FMT, 0); /* And endpoint 0 */
>>>   }
>>>   +static void cio2_bridge_init_swnode_group(struct cio2_sensor *sensor)
>>> +{
>>> +    struct software_node *nodes = sensor->swnodes;
>>> +
>>> +    sensor->group[SWNODE_SENSOR_HID] = &nodes[SWNODE_SENSOR_HID];
>>> +    sensor->group[SWNODE_SENSOR_PORT] = &nodes[SWNODE_SENSOR_PORT];
>>> +    sensor->group[SWNODE_SENSOR_ENDPOINT] = &nodes[SWNODE_SENSOR_ENDPOINT];
>>> +    sensor->group[SWNODE_CIO2_PORT] = &nodes[SWNODE_CIO2_PORT];
>>> +    sensor->group[SWNODE_CIO2_ENDPOINT] = &nodes[SWNODE_CIO2_ENDPOINT];
>>> +    if (sensor->ssdb.vcmtype)
>>> +        sensor->group[SWNODE_VCM] =  &nodes[SWNODE_VCM];
>>> +}
>>> +
>>>   static void cio2_bridge_create_connection_swnodes(struct cio2_bridge *bridge,
>>>                             struct cio2_sensor *sensor)
>>>   {
>>> @@ -219,6 +232,8 @@ static void cio2_bridge_create_connection_swnodes(struct cio2_bridge *bridge,
>>>       if (sensor->ssdb.vcmtype)
>>>           nodes[SWNODE_VCM] =
>>>               NODE_VCM(cio2_vcm_types[sensor->ssdb.vcmtype - 1]);
>>> +
>>> +    cio2_bridge_init_swnode_group(sensor);
>>>   }
>>>     static void cio2_bridge_instantiate_vcm_i2c_client(struct cio2_sensor *sensor)
>>> @@ -252,7 +267,7 @@ static void cio2_bridge_unregister_sensors(struct cio2_bridge *bridge)
>>>         for (i = 0; i < bridge->n_sensors; i++) {
>>>           sensor = &bridge->sensors[i];
>>> -        software_node_unregister_nodes(sensor->swnodes);
>>> +        software_node_unregister_node_group(sensor->group);
>>>           ACPI_FREE(sensor->pld);
>>>           acpi_dev_put(sensor->adev);
>>>           i2c_unregister_device(sensor->vcm_i2c_client);
>>> @@ -310,7 +325,7 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg,
>>>           cio2_bridge_create_fwnode_properties(sensor, bridge, cfg);
>>>           cio2_bridge_create_connection_swnodes(bridge, sensor);
>>>   -        ret = software_node_register_nodes(sensor->swnodes);
>>> +        ret = software_node_register_node_group(sensor->group);
>>>           if (ret)
>>>               goto err_free_pld;
>>>   @@ -337,7 +352,7 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg,
>>>       return 0;
>>>     err_free_swnodes:
>>> -    software_node_unregister_nodes(sensor->swnodes);
>>> +    software_node_unregister_node_group(sensor->group);
>>>   err_free_pld:
>>>       ACPI_FREE(sensor->pld);
>>>   err_put_adev:
>>> diff --git a/drivers/media/pci/intel/ipu3/cio2-bridge.h b/drivers/media/pci/intel/ipu3/cio2-bridge.h
>>> index 4418cbd08208..b93b749c65bd 100644
>>> --- a/drivers/media/pci/intel/ipu3/cio2-bridge.h
>>> +++ b/drivers/media/pci/intel/ipu3/cio2-bridge.h
>>> @@ -117,8 +117,9 @@ struct cio2_sensor {
>>>       struct acpi_device *adev;
>>>       struct i2c_client *vcm_i2c_client;
>>>   -    /* SWNODE_COUNT + 1 for terminating empty node */
>>> -    struct software_node swnodes[SWNODE_COUNT + 1];
>>> +    /* SWNODE_COUNT + 1 for terminating NULL */
>>> +    const struct software_node *group[SWNODE_COUNT + 1];
>>> +    struct software_node swnodes[SWNODE_COUNT];
>>>       struct cio2_node_names node_names;
>>>         struct cio2_sensor_ssdb ssdb;