firmware: arm_scmi: Add support for multiple device per protocol
Currently only one scmi device is created for each protocol enumerated.
However, there is requirement to make use of some procotols by multiple
kernel subsystems/frameworks. One such example is SCMI PERFORMANCE
protocol which can be used by both cpufreq and devfreq drivers.
Similarly, SENSOR protocol may be used by hwmon and iio subsystems,
and POWER protocol may be used by genpd and regulator drivers.
In order to achieve that, let us extend the scmi bus to match based
not only protocol id but also the scmi device name if one is available.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3eb0382..dee7ce3 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -803,11 +803,11 @@ scmi_mbox_txrx_setup(struct scmi_info *info, struct device *dev, int prot_id)
static inline void
scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
- int prot_id)
+ int prot_id, const char *name)
{
struct scmi_device *sdev;
- sdev = scmi_device_create(np, info->dev, prot_id);
+ sdev = scmi_device_create(np, info->dev, prot_id, name);
if (!sdev) {
dev_err(info->dev, "failed to create %d protocol device\n",
prot_id);
@@ -892,7 +892,7 @@ static int scmi_probe(struct platform_device *pdev)
continue;
}
- scmi_create_protocol_device(child, info, prot_id);
+ scmi_create_protocol_device(child, info, prot_id, NULL);
}
return 0;
