drivers/media/i2c/cx25840/cx25840-firmware.c
Source file repositories/reference/linux-study-clean/drivers/media/i2c/cx25840/cx25840-firmware.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/media/i2c/cx25840/cx25840-firmware.c- Extension
.c- Size
- 3842 bytes
- Lines
- 162
- Domain
- Driver Families
- Bucket
- drivers/media
- 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/module.hlinux/i2c.hlinux/firmware.hmedia/v4l2-common.hmedia/drv-intf/cx25840.hcx25840-core.h
Detected Declarations
function start_fw_loadfunction end_fw_loadfunction check_fw_loadfunction fw_writefunction cx25840_loadfw
Annotated Snippet
if (retval < 0) {
release_firmware(fw);
return retval;
}
size -= len;
ptr += len;
}
end_fw_load(client);
size = fw->size;
release_firmware(fw);
if (is_cx2388x(state)) {
/* Restore GPIO configuration after f/w load */
cx25840_write(client, 0x160, gpio_oe);
cx25840_write(client, 0x164, gpio_da);
}
return check_fw_load(client, size);
}
MODULE_FIRMWARE(CX2388x_FIRMWARE);
MODULE_FIRMWARE(CX231xx_FIRMWARE);
MODULE_FIRMWARE(CX25840_FIRMWARE);
Annotation
- Immediate include surface: `linux/module.h`, `linux/i2c.h`, `linux/firmware.h`, `media/v4l2-common.h`, `media/drv-intf/cx25840.h`, `cx25840-core.h`.
- Detected declarations: `function start_fw_load`, `function end_fw_load`, `function check_fw_load`, `function fw_write`, `function cx25840_loadfw`.
- Atlas domain: Driver Families / drivers/media.
- 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.