drivers/misc/cardreader/rtsx_pcr.c

File Facts

System

Linux kernel

Corpus path

drivers/misc/cardreader/rtsx_pcr.c

Extension

.c

Size

44504 bytes

Lines

1836

Domain

Driver Families

Bucket

drivers/misc

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/pci.h
• linux/module.h
• linux/slab.h
• linux/dma-mapping.h
• linux/highmem.h
• linux/interrupt.h
• linux/delay.h
• linux/idr.h
• linux/platform_device.h
• linux/mfd/core.h
• linux/rtsx_pci.h
• linux/mmc/card.h
• linux/unaligned.h
• linux/pm.h
• linux/pm_runtime.h
• rtsx_pcr.h
• rts5261.h
• rts5228.h
• rts5264.h

Detected Declarations

• function rtsx_comm_set_ltr_latency
• function rtsx_set_ltr_latency
• function rtsx_comm_set_aspm
• function rtsx_disable_aspm
• function rtsx_set_l1off_sub
• function rtsx_set_l1off_sub_cfg_d0
• function rtsx_comm_pm_full_on
• function rtsx_pm_full_on
• function rtsx_pci_start_run
• function rtsx_pci_write_register
• function rtsx_pci_read_register
• function __rtsx_pci_write_phy_register
• function rtsx_pci_write_phy_register
• function __rtsx_pci_read_phy_register
• function rtsx_pci_read_phy_register
• function rtsx_pci_stop_cmd
• function rtsx_pci_add_cmd
• function rtsx_pci_send_cmd_no_wait
• function rtsx_pci_send_cmd
• function rtsx_pci_add_sg_tbl
• function rtsx_pci_dma_map_sg
• function rtsx_pci_dma_unmap_sg
• function rtsx_pci_dma_transfer
• function rtsx_pci_read_ppbuf
• function rtsx_pci_write_ppbuf
• function rtsx_pci_set_pull_ctl
• function rtsx_pci_card_pull_ctl_enable
• function rtsx_pci_card_pull_ctl_disable
• function rtsx_pci_enable_bus_int
• function double_ssc_depth
• function revise_ssc_depth
• function rtsx_pci_switch_clock
• function rtsx_pci_card_power_on
• function rtsx_pci_card_power_off
• function rtsx_pci_card_exclusive_check
• function rtsx_pci_switch_output_voltage
• function rtsx_pci_card_exist
• function rtsx_pci_complete_unfinished_transfer
• function rtsx_pci_card_detect
• function rtsx_pci_process_ocp
• function rtsx_pci_process_ocp_interrupt
• function rtsx_pci_isr
• function rtsx_pci_acquire_irq
• function rtsx_base_force_power_down
• function rtsx_pci_power_off
• function rtsx_pci_enable_ocp
• function rtsx_pci_disable_ocp
• function rtsx_pci_init_ocp

Annotated Snippet

static struct pci_driver rtsx_pci_driver = {
	.name = DRV_NAME_RTSX_PCI,
	.id_table = rtsx_pci_ids,
	.probe = rtsx_pci_probe,
	.remove = rtsx_pci_remove,
	.driver.pm = &rtsx_pci_pm_ops,
	.shutdown = rtsx_pci_shutdown,
};
module_pci_driver(rtsx_pci_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>");
MODULE_DESCRIPTION("Realtek PCI-E Card Reader Driver");

Annotation

• Immediate include surface: `linux/pci.h`, `linux/module.h`, `linux/slab.h`, `linux/dma-mapping.h`, `linux/highmem.h`, `linux/interrupt.h`, `linux/delay.h`, `linux/idr.h`.
• Detected declarations: `function rtsx_comm_set_ltr_latency`, `function rtsx_set_ltr_latency`, `function rtsx_comm_set_aspm`, `function rtsx_disable_aspm`, `function rtsx_set_l1off_sub`, `function rtsx_set_l1off_sub_cfg_d0`, `function rtsx_comm_pm_full_on`, `function rtsx_pm_full_on`, `function rtsx_pci_start_run`, `function rtsx_pci_write_register`.
• Atlas domain: Driver Families / drivers/misc.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.