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Message-Id: <1453926929-17663-214-git-send-email-kamal@canonical.com>
Date: Wed, 27 Jan 2016 12:34:34 -0800
From: Kamal Mostafa <kamal@...onical.com>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
kernel-team@...ts.ubuntu.com
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Takashi Iwai <tiwai@...e.de>,
Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 213/268] ALSA: fm801: detect FM-only card earlier
4.2.8-ckt3 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
commit b56fa687e02b27f8bd9d282950a88c2ed23d766b upstream.
If user does not supply tea575x_tuner parameter the driver tries to detect the
tuner type. The failed codec initialization is considered as FM-only card
present, however the driver still registers an IRQ handler for it.
Move codec detection earlier to set tea575x_tuner parameter before check.
Here the following functions are introduced
reset_coded() resets AC97 codec
snd_fm801_chip_multichannel_init() initializes cards with multichannel support
Fixes: 5618955c4269 (ALSA: fm801: move to pcim_* and devm_* functions)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
sound/pci/fm801.c | 69 +++++++++++++++++++++++++++++++------------------------
1 file changed, 39 insertions(+), 30 deletions(-)
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 27f97b9..096fd58 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1080,26 +1080,20 @@ static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
return -EIO;
}
-static int snd_fm801_chip_init(struct fm801 *chip, int resume)
+static int reset_codec(struct fm801 *chip)
{
- unsigned short cmdw;
-
- if (chip->tea575x_tuner & TUNER_ONLY)
- goto __ac97_ok;
-
/* codec cold reset + AC'97 warm reset */
fm801_writew(chip, CODEC_CTRL, (1 << 5) | (1 << 6));
fm801_readw(chip, CODEC_CTRL); /* flush posting data */
udelay(100);
fm801_writew(chip, CODEC_CTRL, 0);
- if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
- if (!resume) {
- dev_info(chip->card->dev,
- "Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
- chip->tea575x_tuner = 3 | TUNER_ONLY;
- goto __ac97_ok;
- }
+ return wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750));
+}
+
+static void snd_fm801_chip_multichannel_init(struct fm801 *chip)
+{
+ unsigned short cmdw;
if (chip->multichannel) {
if (chip->secondary_addr) {
@@ -1126,8 +1120,11 @@ static int snd_fm801_chip_init(struct fm801 *chip, int resume)
/* cause timeout problems */
wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
}
+}
- __ac97_ok:
+static void snd_fm801_chip_init(struct fm801 *chip)
+{
+ unsigned short cmdw;
/* init volume */
fm801_writew(chip, PCM_VOL, 0x0808);
@@ -1148,11 +1145,8 @@ static int snd_fm801_chip_init(struct fm801 *chip, int resume)
/* interrupt clear */
fm801_writew(chip, IRQ_STATUS,
FM801_IRQ_PLAYBACK | FM801_IRQ_CAPTURE | FM801_IRQ_MPU);
-
- return 0;
}
-
static int snd_fm801_free(struct fm801 *chip)
{
unsigned short cmdw;
@@ -1209,7 +1203,23 @@ static int snd_fm801_create(struct snd_card *card,
if ((err = pci_request_regions(pci, "FM801")) < 0)
return err;
chip->port = pci_resource_start(pci, 0);
- if ((tea575x_tuner & TUNER_ONLY) == 0) {
+
+ if (pci->revision >= 0xb1) /* FM801-AU */
+ chip->multichannel = 1;
+
+ if (!(chip->tea575x_tuner & TUNER_ONLY)) {
+ if (reset_codec(chip) < 0) {
+ dev_info(chip->card->dev,
+ "Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
+ chip->tea575x_tuner = 3 | TUNER_ONLY;
+ } else {
+ snd_fm801_chip_multichannel_init(chip);
+ }
+ }
+
+ snd_fm801_chip_init(chip);
+
+ if ((chip->tea575x_tuner & TUNER_ONLY) == 0) {
if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
@@ -1220,13 +1230,6 @@ static int snd_fm801_create(struct snd_card *card,
pci_set_master(pci);
}
- if (pci->revision >= 0xb1) /* FM801-AU */
- chip->multichannel = 1;
-
- snd_fm801_chip_init(chip, 0);
- /* init might set tuner access method */
- tea575x_tuner = chip->tea575x_tuner;
-
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_fm801_free(chip);
return err;
@@ -1243,15 +1246,15 @@ static int snd_fm801_create(struct snd_card *card,
chip->tea.private_data = chip;
chip->tea.ops = &snd_fm801_tea_ops;
sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
- if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
- (tea575x_tuner & TUNER_TYPE_MASK) < 4) {
+ if ((chip->tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
+ (chip->tea575x_tuner & TUNER_TYPE_MASK) < 4) {
if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
dev_err(card->dev, "TEA575x radio not found\n");
snd_fm801_free(chip);
return -ENODEV;
}
- } else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
- unsigned int tuner_only = tea575x_tuner & TUNER_ONLY;
+ } else if ((chip->tea575x_tuner & TUNER_TYPE_MASK) == 0) {
+ unsigned int tuner_only = chip->tea575x_tuner & TUNER_ONLY;
/* autodetect tuner connection */
for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
@@ -1387,7 +1390,13 @@ static int snd_fm801_resume(struct device *dev)
struct fm801 *chip = card->private_data;
int i;
- snd_fm801_chip_init(chip, 1);
+ if (chip->tea575x_tuner & TUNER_ONLY) {
+ snd_fm801_chip_init(chip);
+ } else {
+ reset_codec(chip);
+ snd_fm801_chip_multichannel_init(chip);
+ snd_fm801_chip_init(chip);
+ }
snd_ac97_resume(chip->ac97);
snd_ac97_resume(chip->ac97_sec);
for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
--
1.9.1
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