drivers/media/i2c/adv7604.c

File Facts

System

Linux kernel

Corpus path

drivers/media/i2c/adv7604.c

Extension

.c

Size

111700 bytes

Lines

3767

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.
• 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/delay.h
• linux/gpio/consumer.h
• linux/hdmi.h
• linux/i2c.h
• linux/kernel.h
• linux/module.h
• linux/of_graph.h
• linux/slab.h
• linux/v4l2-dv-timings.h
• linux/videodev2.h
• linux/workqueue.h
• linux/regmap.h
• linux/interrupt.h
• media/i2c/adv7604.h
• media/cec.h
• media/v4l2-ctrls.h
• media/v4l2-device.h
• media/v4l2-event.h
• media/v4l2-dv-timings.h
• media/v4l2-fwnode.h

Detected Declarations

• struct adv76xx_reg_seq
• struct adv76xx_format_info
• struct adv76xx_cfg_read_infoframe
• struct adv76xx_chip_info
• struct adv76xx_state
• struct adv76xx_video_standards
• struct stdi_readback
• struct adv76xx_register_map
• enum adv76xx_type
• function adv76xx_has_afe
• function adv76xx_check_dv_timings
• function htotal
• function vtotal
• function adv76xx_read_check
• function adv76xx_write_block
• function io_read
• function io_write
• function io_write_clr_set
• function avlink_read
• function avlink_write
• function cec_read
• function cec_write
• function cec_write_clr_set
• function infoframe_read
• function infoframe_write
• function afe_read
• function afe_write
• function rep_read
• function rep_write
• function rep_write_clr_set
• function edid_read
• function edid_write
• function edid_write_block
• function adv76xx_set_hpd
• function adv76xx_delayed_work_enable_hotplug
• function hdmi_read
• function hdmi_read16
• function hdmi_write
• function hdmi_write_clr_set
• function test_write
• function cp_read
• function cp_read16
• function cp_write
• function cp_write_clr_set
• function vdp_read
• function vdp_write
• function adv76xx_read_reg
• function adv76xx_write_reg

Annotated Snippet

struct adv76xx_reg_seq {
	unsigned int reg;
	u8 val;
};

struct adv76xx_format_info {
	u32 code;
	u8 op_ch_sel;
	bool rgb_out;
	bool swap_cb_cr;
	u8 op_format_sel;
};

struct adv76xx_cfg_read_infoframe {
	const char *desc;
	u8 present_mask;
	u8 head_addr;
	u8 payload_addr;
};

struct adv76xx_chip_info {
	enum adv76xx_type type;

	bool has_afe;
	unsigned int max_port;
	unsigned int num_dv_ports;

	unsigned int edid_enable_reg;
	unsigned int edid_status_reg;
	unsigned int edid_segment_reg;
	unsigned int edid_segment_mask;
	unsigned int edid_spa_loc_reg;
	unsigned int edid_spa_loc_msb_mask;
	unsigned int edid_spa_port_b_reg;
	unsigned int lcf_reg;

	unsigned int cable_det_mask;
	unsigned int tdms_lock_mask;
	unsigned int fmt_change_digital_mask;
	unsigned int cp_csc;

	unsigned int cec_irq_status;
	unsigned int cec_rx_enable;
	unsigned int cec_rx_enable_mask;
	bool cec_irq_swap;

	const struct adv76xx_format_info *formats;
	unsigned int nformats;

	void (*set_termination)(struct v4l2_subdev *sd, bool enable);
	void (*setup_irqs)(struct v4l2_subdev *sd);
	unsigned int (*read_hdmi_pixelclock)(struct v4l2_subdev *sd);
	unsigned int (*read_cable_det)(struct v4l2_subdev *sd);

	/* 0 = AFE, 1 = HDMI */
	const struct adv76xx_reg_seq *recommended_settings[2];
	unsigned int num_recommended_settings[2];

	unsigned long page_mask;

	/* Masks for timings */
	unsigned int linewidth_mask;
	unsigned int field0_height_mask;
	unsigned int field1_height_mask;
	unsigned int hfrontporch_mask;
	unsigned int hsync_mask;
	unsigned int hbackporch_mask;
	unsigned int field0_vfrontporch_mask;
	unsigned int field1_vfrontporch_mask;
	unsigned int field0_vsync_mask;
	unsigned int field1_vsync_mask;
	unsigned int field0_vbackporch_mask;
	unsigned int field1_vbackporch_mask;
};

/*
 **********************************************************************
 *
 *  Arrays with configuration parameters for the ADV7604
 *
 **********************************************************************
 */

struct adv76xx_state {
	const struct adv76xx_chip_info *info;
	struct adv76xx_platform_data pdata;

	struct gpio_desc *hpd_gpio[4];
	struct gpio_desc *reset_gpio;

Annotation

• Immediate include surface: `linux/delay.h`, `linux/gpio/consumer.h`, `linux/hdmi.h`, `linux/i2c.h`, `linux/kernel.h`, `linux/module.h`, `linux/of_graph.h`, `linux/slab.h`.
• Detected declarations: `struct adv76xx_reg_seq`, `struct adv76xx_format_info`, `struct adv76xx_cfg_read_infoframe`, `struct adv76xx_chip_info`, `struct adv76xx_state`, `struct adv76xx_video_standards`, `struct stdi_readback`, `struct adv76xx_register_map`, `enum adv76xx_type`, `function adv76xx_has_afe`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.
• 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.