drivers/hid/hid-petalynx.c
Source file repositories/reference/linux-study-clean/drivers/hid/hid-petalynx.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/hid/hid-petalynx.c- Extension
.c- Size
- 2669 bytes
- Lines
- 107
- Domain
- Driver Families
- Bucket
- drivers/hid
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/device.hlinux/hid.hlinux/module.hhid-ids.h
Detected Declarations
function Copyrightfunction pl_input_mappingfunction pl_probe
Annotated Snippet
switch (usage->hid & HID_USAGE) {
case 0x05a: pl_map_key_clear(KEY_TEXT); break;
case 0x05b: pl_map_key_clear(KEY_RED); break;
case 0x05c: pl_map_key_clear(KEY_GREEN); break;
case 0x05d: pl_map_key_clear(KEY_YELLOW); break;
case 0x05e: pl_map_key_clear(KEY_BLUE); break;
default:
return 0;
}
return 1;
}
if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
switch (usage->hid & HID_USAGE) {
case 0x0f6: pl_map_key_clear(KEY_NEXT); break;
case 0x0fa: pl_map_key_clear(KEY_BACK); break;
default:
return 0;
}
return 1;
}
return 0;
}
static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
hdev->quirks |= HID_QUIRK_NOGET;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err_free;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err_free;
}
return 0;
err_free:
return ret;
}
static const struct hid_device_id pl_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
{ }
};
MODULE_DEVICE_TABLE(hid, pl_devices);
static struct hid_driver pl_driver = {
.name = "petalynx",
.id_table = pl_devices,
.report_fixup = pl_report_fixup,
.input_mapping = pl_input_mapping,
.probe = pl_probe,
};
module_hid_driver(pl_driver);
MODULE_DESCRIPTION("HID driver for some petalynx \"special\" devices");
MODULE_LICENSE("GPL");
Annotation
- Immediate include surface: `linux/device.h`, `linux/hid.h`, `linux/module.h`, `hid-ids.h`.
- Detected declarations: `function Copyright`, `function pl_input_mapping`, `function pl_probe`.
- Atlas domain: Driver Families / drivers/hid.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.