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 11:22:17 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     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:     Daniel Scally <djrscally@...il.com>,
        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()

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 ?

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;
>