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From: Cristian Marussi <cristian.marussi@arm.com>
To: Sudeep Holla <sudeep.holla@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 09/15] firmware: arm_scmi: Add scmi protocol version and id device attributes
Date: Wed, 11 Dec 2019 18:08:43 +0000	[thread overview]
Message-ID: <06f14189-c871-9b71-0029-293476e1c6b7@arm.com> (raw)
In-Reply-To: <20191210145345.11616-10-sudeep.holla@arm.com>

On 10/12/2019 14:53, Sudeep Holla wrote:
> Linux kernel bus driver management layer provides way to add set of
> default attributes of the devices on the bus. Using the same, let's add
> the scmi per protocol version and id attributes to the sysfs.
> 
> It helps to identify the individual protocol details from the sysfs
> entries similar to the SCMI protocol and firmware version.
> 
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> ---
>  drivers/firmware/arm_scmi/bus.c | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
> index f619da2634a6..ed0ed02f7158 100644
> --- a/drivers/firmware/arm_scmi/bus.c
> +++ b/drivers/firmware/arm_scmi/bus.c
> @@ -92,11 +92,38 @@ static int scmi_dev_remove(struct device *dev)
>  	return 0;
>  }
> 
> +static ssize_t protocol_version_show(struct device *dev,
> +				     struct device_attribute *attr, char *buf)
> +{
> +	struct scmi_device *scmi_dev = to_scmi_dev(dev);
> +
> +	return sprintf(buf, "%u.%u\n", PROTOCOL_REV_MAJOR(scmi_dev->version),
> +		       PROTOCOL_REV_MINOR(scmi_dev->version));
> +}
> +static DEVICE_ATTR_RO(protocol_version);
> +

Similar issue related to proto/device mixup as said.
Here bus exposes sysfs attributes depending on an scmi_dev

Cristian


> +static ssize_t protocol_id_show(struct device *dev,
> +				struct device_attribute *attr, char *buf)
> +{
> +	struct scmi_device *scmi_dev = to_scmi_dev(dev);
> +
> +	return sprintf(buf, "%u\n", scmi_dev->protocol_id);
> +}
> +static DEVICE_ATTR_RO(protocol_id);
> +
> +static struct attribute *versions_attrs[] = {
> +	&dev_attr_protocol_version.attr,
> +	&dev_attr_protocol_id.attr,
> +	NULL,
> +};
> +ATTRIBUTE_GROUPS(versions);
> +
>  static struct bus_type scmi_bus_type = {
>  	.name =	"scmi_protocol",
>  	.match = scmi_dev_match,
>  	.probe = scmi_dev_probe,
>  	.remove = scmi_dev_remove,
> +	.dev_groups = versions_groups,
>  };
> 
>  int scmi_driver_register(struct scmi_driver *driver, struct module *owner,
> --
> 2.17.1
> 


  reply	other threads:[~2019-12-11 18:08 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-10 14:53 [PATCH 00/15] firmware: arm_scmi: Add support for multiple device per protocol Sudeep Holla
2019-12-10 14:53 ` [PATCH 01/15] " Sudeep Holla
2019-12-10 17:02   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 02/15] firmware: arm_scmi: Skip scmi mbox channel setup for addtional devices Sudeep Holla
2019-12-10 17:33   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 03/15] firmware: arm_scmi: Skip protocol initialisation for additional devices Sudeep Holla
2019-12-10 18:14   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 04/15] firmware: arm_scmi: Add names to scmi devices created Sudeep Holla
2019-12-10 18:26   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 05/15] firmware: arm_scmi: Add versions and identifier attributes using dev_groups Sudeep Holla
2019-12-11 13:21   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 06/15] firmware: arm_scmi: Update scmi_prot_init_fn_t to use device instead of handle Sudeep Holla
2019-12-11 17:34   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 07/15] firmware: arm_scmi: Stash version in protocol init functions Sudeep Holla
2019-12-11 17:35   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 08/15] firmware: arm_scmi: Add and initialise protocol version to scmi_device structure Sudeep Holla
2019-12-11 18:06   ` Cristian Marussi
2019-12-12 12:15     ` Sudeep Holla
2019-12-10 14:53 ` [PATCH 09/15] firmware: arm_scmi: Add scmi protocol version and id device attributes Sudeep Holla
2019-12-11 18:08   ` Cristian Marussi [this message]
2019-12-10 14:53 ` [PATCH 10/15] firmware: arm_scmi: Drop logging individual scmi protocol version Sudeep Holla
2019-12-11 18:09   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 11/15] firmware: arm_scmi: Match scmi device by both name and protocol id Sudeep Holla
2019-12-11 18:09   ` Cristian Marussi
2019-12-11 18:10   ` Cristian Marussi
2019-12-10 14:53 ` [PATCH 12/15] clk: scmi: " Sudeep Holla
2019-12-24  7:49   ` Stephen Boyd
2019-12-10 14:53 ` [PATCH 13/15] cpufreq: " Sudeep Holla
2019-12-11  2:39   ` Viresh Kumar
2019-12-11 10:13     ` Sudeep Holla
2019-12-11 10:30       ` Viresh Kumar
2019-12-10 14:53 ` [PATCH 14/15] hwmon: (scmi-hwmon) " Sudeep Holla
2019-12-10 18:06   ` Guenter Roeck
2019-12-10 18:20     ` Sudeep Holla
2019-12-10 14:53 ` [PATCH 15/15] reset: reset-scmi: " Sudeep Holla
2019-12-11  9:51   ` Philipp Zabel
2019-12-11 15:28     ` Sudeep Holla

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