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ALSA: hda - Add hduadio support to DEVTABLE

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For generating modalias entries automatically, move the definition of
struct hda_device_id to linux/mod_devicetable.h and add the handling
of this record in file2alias helper.  The new modalias is represented
with combination of vendor id, device id, and api version as
"hdaudio:vNrNaN".

This patch itself doesn't convert the existing modaliases.  Since they
were added manually, this patch won't give any regression by itself at
this point.

[Modified the modalias format to adapt the api_version field, and drop
 invalid ANY_ID definition by tiwai]

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Tested-by: Subhransu S Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Subhransu S. Prusty 2015-09-29 13:56:10 +05:30 committed by Takashi Iwai
parent 93ed8560e9
commit da23ac1e40
5 changed files with 32 additions and 11 deletions
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8
include/linux/mod_devicetable.h
View File

@ -219,6 +219,14 @@ struct serio_device_id {
__u8 proto;
};
struct hda_device_id {
__u32 vendor_id;
__u32 rev_id;
__u8 api_version;
const char *name;
unsigned long driver_data;
};
/*
* Struct used for matching a device
*/

12
include/sound/hdaudio.h
View File

@ -21,23 +21,13 @@ struct hdac_stream;
struct hdac_device;
struct hdac_driver;
struct hdac_widget_tree;
struct hda_device_id;
/*
* exported bus type
*/
extern struct bus_type snd_hda_bus_type;
/*
* HDA device table
*/
struct hda_device_id {
__u32 vendor_id;
__u32 rev_id;
__u8 api_version;
const char *name;
unsigned long driver_data;
};
/*
* generic arrays
*/

5
scripts/mod/devicetable-offsets.c
View File

@ -196,5 +196,10 @@ int main(void)
DEVID_FIELD(ulpi_device_id, vendor);
DEVID_FIELD(ulpi_device_id, product);
DEVID(hda_device_id);
DEVID_FIELD(hda_device_id, vendor_id);
DEVID_FIELD(hda_device_id, rev_id);
DEVID_FIELD(hda_device_id, api_version);
return 0;
}

17
scripts/mod/file2alias.c
View File

@ -1250,6 +1250,23 @@ static int do_ulpi_entry(const char *filename, void *symval,
}
ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry);
/* Looks like: hdaudio:vNrNaN */
static int do_hda_entry(const char *filename, void *symval, char *alias)
{
DEF_FIELD(symval, hda_device_id, vendor_id);
DEF_FIELD(symval, hda_device_id, rev_id);
DEF_FIELD(symval, hda_device_id, api_version);
strcpy(alias, "hdaudio:");
ADD(alias, "v", vendor_id != 0, vendor_id);
ADD(alias, "r", rev_id != 0, rev_id);
ADD(alias, "a", api_version != 0, api_version);
add_wildcard(alias);
return 1;
}
ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry);
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
{

1
sound/hda/hda_bus_type.c
View File

@ -4,6 +4,7 @@
#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>