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ALSA: hda - Load firmware in hda_intel.c 

This is a preliminary work for the deferred probing for
request_firmware() errors at init.

This patch moves the call of request_firmware() to hda_intel.c, and
call it in the earlier stage of probing rather than
azx_probe_continue().

Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-08-09 12:33:28 +02:00
parent 94c142a160
commit 4918cdab49
3 changed files with 38 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/pci/hda/hda_codec.h
View File

@ -1072,7 +1072,7 @@ static inline void snd_hda_power_down(struct hda_codec *codec) {}
/*
* patch firmware
*/
int snd_hda_load_patch(struct hda_bus *bus, const char *patch);
int snd_hda_load_patch(struct hda_bus *bus, size_t size, const void *buf);
#endif
/*

39
sound/pci/hda/hda_hwdep.c
View File

@ -25,7 +25,6 @@
#include <linux/mutex.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/firmware.h>
#include <linux/export.h>
#include <sound/core.h>
#include "hda_codec.h"
@ -747,18 +746,21 @@ static int parse_line_mode(char *buf, struct hda_bus *bus)
*
* the spaces at the beginning and the end of the line are stripped
*/
static int get_line_from_fw(char *buf, int size, struct firmware *fw)
static int get_line_from_fw(char *buf, int size, size_t *fw_size_p,
const void **fw_data_p)
{
int len;
const char *p = fw->data;
while (isspace(*p) && fw->size) {
size_t fw_size = *fw_size_p;
const char *p = *fw_data_p;
while (isspace(*p) && fw_size) {
p++;
fw->size--;
fw_size--;
}
if (!fw->size)
if (!fw_size)
return 0;
for (len = 0; len < fw->size; len++) {
for (len = 0; len < fw_size; len++) {
if (!*p)
break;
if (*p == '\n') {
@ -770,8 +772,8 @@ static int get_line_from_fw(char *buf, int size, struct firmware *fw)
*buf++ = *p++;
}
*buf = 0;
fw->size -= len;
fw->data = p;
*fw_size_p = fw_size - len;
*fw_data_p = p;
remove_trail_spaces(buf);
return 1;
}
@ -779,29 +781,15 @@ static int get_line_from_fw(char *buf, int size, struct firmware *fw)
/*
* load a "patch" firmware file and parse it
*/
int snd_hda_load_patch(struct hda_bus *bus, const char *patch)
int snd_hda_load_patch(struct hda_bus *bus, size_t fw_size, const void *fw_buf)
{
int err;
const struct firmware *fw;
struct firmware tmp;
char buf[128];
struct hda_codec *codec;
int line_mode;
struct device *dev = bus->card->dev;
if (snd_BUG_ON(!dev))
return -ENODEV;
err = request_firmware(&fw, patch, dev);
if (err < 0) {
printk(KERN_ERR "hda-codec: Cannot load the patch '%s'\n",
patch);
return err;
}
tmp = *fw;
line_mode = LINE_MODE_NONE;
codec = NULL;
while (get_line_from_fw(buf, sizeof(buf) - 1, &tmp)) {
while (get_line_from_fw(buf, sizeof(buf) - 1, &fw_size, &fw_buf)) {
if (!*buf || *buf == '#' || *buf == '\n')
continue;
if (*buf == '[')
@ -810,7 +798,6 @@ int snd_hda_load_patch(struct hda_bus *bus, const char *patch)
(codec || !patch_items[line_mode].need_codec))
patch_items[line_mode].parser(buf, bus, &codec);
}
release_firmware(fw);
return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_load_patch);

29
sound/pci/hda/hda_intel.c
View File

@ -55,6 +55,7 @@
#include <sound/initval.h>
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>
#include <linux/firmware.h>
#include "hda_codec.h"
@ -470,6 +471,10 @@ struct azx {
struct snd_dma_buffer rb;
struct snd_dma_buffer posbuf;
#ifdef CONFIG_SND_HDA_PATCH_LOADER
const struct firmware *fw;
#endif
/* flags */
int position_fix[2]; /* for both playback/capture streams */
int poll_count;
@ -2639,6 +2644,10 @@ static int azx_free(struct azx *chip)
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip->azx_dev);
#ifdef CONFIG_SND_HDA_PATCH_LOADER
if (chip->fw)
release_firmware(chip->fw);
#endif
kfree(chip);
return 0;
@ -3167,7 +3176,6 @@ static int __devinit azx_probe(struct pci_dev *pci,
return err;
}
/* set this here since it's referred in snd_hda_load_patch() */
snd_card_set_dev(card, &pci->dev);
err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
@ -3175,6 +3183,16 @@ static int __devinit azx_probe(struct pci_dev *pci,
goto out_free;
card->private_data = chip;
#ifdef CONFIG_SND_HDA_PATCH_LOADER
if (patch[dev] && *patch[dev]) {
snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
patch[dev]);
err = request_firmware(&chip->fw, patch[dev], &pci->dev);
if (err < 0)
goto out_free;
}
#endif /* CONFIG_SND_HDA_PATCH_LOADER */
if (!chip->disabled) {
err = azx_probe_continue(chip);
if (err < 0)
@ -3205,12 +3223,13 @@ static int DELAYED_INIT_MARK azx_probe_continue(struct azx *chip)
if (err < 0)
goto out_free;
#ifdef CONFIG_SND_HDA_PATCH_LOADER
if (patch[dev] && *patch[dev]) {
snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
patch[dev]);
err = snd_hda_load_patch(chip->bus, patch[dev]);
if (chip->fw) {
err = snd_hda_load_patch(chip->bus, chip->fw->size,
chip->fw->data);
if (err < 0)
goto out_free;
release_firmware(chip->fw); /* no longer needed */
chip->fw = NULL;
}
#endif
if ((probe_only[dev] & 1) == 0) {