drivers/media/dvb-frontends/stv6111.c

File Facts

System

Linux kernel

Corpus path

drivers/media/dvb-frontends/stv6111.c

Extension

.c

Size

14007 bytes

Lines

682

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• 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/kernel.h
• linux/module.h
• linux/moduleparam.h
• linux/init.h
• linux/delay.h
• linux/firmware.h
• linux/i2c.h
• asm/div64.h
• stv6111.h
• media/dvb_frontend.h

Detected Declarations

• struct stv
• struct slookup
• function muldiv32
• function i2c_read
• function i2c_write
• function write_regs
• function write_reg
• function read_reg
• function wait_for_call_done
• function init_state
• function attach_init
• function release
• function set_bandwidth
• function set_lof
• function set_params
• function table_lookup
• function get_rf_strength
• export stv6111_attach

Annotated Snippet

struct stv {
	struct i2c_adapter *i2c;
	u8 adr;

	u8 reg[11];
	u32 ref_freq;
	u32 frequency;
};

struct slookup {
	s16 value;
	u16 reg_value;
};

static const struct slookup lnagain_nf_lookup[] = {
	/* Gain *100dB // Reg */
	{ 2572,	0 },
	{ 2575, 1 },
	{ 2580, 2 },
	{ 2588, 3 },
	{ 2596, 4 },
	{ 2611, 5 },
	{ 2633, 6 },
	{ 2664, 7 },
	{ 2701, 8 },
	{ 2753, 9 },
	{ 2816, 10 },
	{ 2902, 11 },
	{ 2995, 12 },
	{ 3104, 13 },
	{ 3215, 14 },
	{ 3337, 15 },
	{ 3492, 16 },
	{ 3614, 17 },
	{ 3731, 18 },
	{ 3861, 19 },
	{ 3988, 20 },
	{ 4124, 21 },
	{ 4253, 22 },
	{ 4386,	23 },
	{ 4505,	24 },
	{ 4623,	25 },
	{ 4726,	26 },
	{ 4821,	27 },
	{ 4903,	28 },
	{ 4979,	29 },
	{ 5045,	30 },
	{ 5102,	31 }
};

static const struct slookup lnagain_iip3_lookup[] = {
	/* Gain *100dB // reg */
	{ 1548,	0 },
	{ 1552,	1 },
	{ 1569,	2 },
	{ 1565,	3 },
	{ 1577,	4 },
	{ 1594,	5 },
	{ 1627,	6 },
	{ 1656,	7 },
	{ 1700,	8 },
	{ 1748,	9 },
	{ 1805,	10 },
	{ 1896,	11 },
	{ 1995,	12 },
	{ 2113,	13 },
	{ 2233,	14 },
	{ 2366,	15 },
	{ 2543,	16 },
	{ 2687,	17 },
	{ 2842,	18 },
	{ 2999,	19 },
	{ 3167,	20 },
	{ 3342,	21 },
	{ 3507,	22 },
	{ 3679,	23 },
	{ 3827,	24 },
	{ 3970,	25 },
	{ 4094,	26 },
	{ 4210,	27 },
	{ 4308,	28 },
	{ 4396,	29 },
	{ 4468,	30 },
	{ 4535,	31 }
};

static const struct slookup gain_rfagc_lookup[] = {
	/* Gain *100dB // reg */
	{ 4870,	0x3000 },
	{ 4850,	0x3C00 },

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/init.h`, `linux/delay.h`, `linux/firmware.h`, `linux/i2c.h`, `asm/div64.h`.
• Detected declarations: `struct stv`, `struct slookup`, `function muldiv32`, `function i2c_read`, `function i2c_write`, `function write_regs`, `function write_reg`, `function read_reg`, `function wait_for_call_done`, `function init_state`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: integration 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.