cregit-Linux how code gets into the kernel

Release 4.14 sound/hda/hda_bus_type.c

Directory: sound/hda
/*
 * HD-audio bus
 */
#include <linux/init.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/export.h>
#include <sound/hdaudio.h>

MODULE_DESCRIPTION("HD-audio bus");
MODULE_LICENSE("GPL");

/**
 * hdac_get_device_id - gets the hdac device id entry
 * @hdev: HD-audio core device
 * @drv: HD-audio codec driver
 *
 * Compares the hdac device vendor_id and revision_id to the hdac_device
 * driver id_table and returns the matching device id entry.
 */

const struct hda_device_id * hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv) { if (drv->id_table) { const struct hda_device_id *id = drv->id_table; while (id->vendor_id) { if (hdev->vendor_id == id->vendor_id && (!id->rev_id || id->rev_id == hdev->revision_id)) return id; id++; } } return NULL; }

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Vinod Koul78100.00%1100.00%
Total78100.00%1100.00%

EXPORT_SYMBOL_GPL(hdac_get_device_id);
static int hdac_codec_match(struct hdac_device *dev, struct hdac_driver *drv) { if (hdac_get_device_id(dev, drv)) return 1; else return 0; }

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Vinod Koul32100.00%1100.00%
Total32100.00%1100.00%


static int hda_bus_match(struct device *dev, struct device_driver *drv) { struct hdac_device *hdev = dev_to_hdac_dev(dev); struct hdac_driver *hdrv = drv_to_hdac_driver(drv); if (hdev->type != hdrv->type) return 0; /* * if driver provided a match function use that otherwise we will * use hdac_codec_match function */ if (hdrv->match) return hdrv->match(hdev, hdrv); else return hdac_codec_match(hdev, hdrv); return 1; }

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Takashi Iwai6887.18%150.00%
Vinod Koul1012.82%150.00%
Total78100.00%2100.00%


static int hda_uevent(struct device *dev, struct kobj_uevent_env *env) { char modalias[32]; snd_hdac_codec_modalias(dev_to_hdac_dev(dev), modalias, sizeof(modalias)); if (add_uevent_var(env, "MODALIAS=%s", modalias)) return -ENOMEM; return 0; }

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Thierry Reding55100.00%1100.00%
Total55100.00%1100.00%

struct bus_type snd_hda_bus_type = { .name = "hdaudio", .match = hda_bus_match, .uevent = hda_uevent, }; EXPORT_SYMBOL_GPL(snd_hda_bus_type);
static int __init hda_bus_init(void) { return bus_register(&snd_hda_bus_type); }

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Takashi Iwai16100.00%1100.00%
Total16100.00%1100.00%


static void __exit hda_bus_exit(void) { bus_unregister(&snd_hda_bus_type); }

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Takashi Iwai15100.00%1100.00%
Total15100.00%1100.00%

subsys_initcall(hda_bus_init); module_exit(hda_bus_exit);

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Takashi Iwai15645.22%125.00%
Vinod Koul12636.52%125.00%
Thierry Reding6017.39%125.00%
Subhransu S. Prusty30.87%125.00%
Total345100.00%4100.00%
Directory: sound/hda
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