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drm/xe/i2c: Allow per domain unique id

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PCI bus, device and function can be same for devices existing across
different domains. Allow per domain unique identifier while registering
platform device to prevent name conflict.

Fixes: f0e53aadd7 ("drm/xe: Support for I2C attached MCUs")
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260721113438.651100-1-raag.jadav@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit a79f6abc8b516b5bd906e2eca8121e3549ee163f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
This commit is contained in:
Raag Jadav 2026-07-21 17:04:38 +05:30 committed by Thomas Hellström
parent 4c92afb4c1
commit 5d8ed6b642
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/xe/xe_i2c.c
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@ -95,18 +95,21 @@ static int xe_i2c_register_adapter(struct xe_i2c *i2c)
struct platform_device *pdev;
struct fwnode_handle *fwnode;
int ret;
u32 id;
fwnode = fwnode_create_software_node(xe_i2c_adapter_properties, NULL);
if (IS_ERR(fwnode))
return PTR_ERR(fwnode);
id = (pci_domain_nr(pci->bus) << 16) | pci_dev_id(pci);
/*
* Not using platform_device_register_full() here because we don't have
* a handle to the platform_device before it returns. xe_i2c_notifier()
* uses that handle, but it may be called before
* platform_device_register_full() is done.
*/
pdev = platform_device_alloc(adapter_name, pci_dev_id(pci));
pdev = platform_device_alloc(adapter_name, id);
if (!pdev) {
ret = -ENOMEM;
goto err_fwnode_remove;