From 5f2cb361d798fb39adb79fab4e5235e307c70e9a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 12 Dec 2019 20:11:01 +0100 Subject: ALSA: hda: Unify get_response handling Now most of the get_response handling became quite similar between HDA-core and legacy drivers, and the only differences are: - the handling of extra-long polling delay for some codecs - the debug message for the stalled communication and both are worth to share in the common code. This patch unifies the code into snd_hdac_bus_get_response(), and use this from the legacy get_response callback. It results in a good amount of code reduction in the end. Reviewed-by: Kai Vehmanen Link: https://lore.kernel.org/r/20191212191101.19517-3-tiwai@suse.de Signed-off-by: Takashi Iwai --- sound/hda/hdac_controller.c | 11 +++++++++- sound/pci/hda/hda_controller.c | 49 ++++-------------------------------------- sound/pci/hda/hda_intel.c | 2 +- sound/pci/hda/hda_tegra.c | 2 +- sound/pci/hda/patch_ca0110.c | 2 +- sound/pci/hda/patch_sigmatel.c | 2 +- 6 files changed, 18 insertions(+), 50 deletions(-) (limited to 'sound') diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index 61950b83b8c9..01787081552d 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -242,6 +242,7 @@ int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, unsigned long timeout; unsigned long loopcounter; wait_queue_entry_t wait; + bool warned = false; init_wait_entry(&wait, 0); timeout = jiffies + msecs_to_jiffies(1000); @@ -264,9 +265,17 @@ int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, spin_unlock_irq(&bus->reg_lock); if (time_after(jiffies, timeout)) break; +#define LOOP_COUNT_MAX 3000 if (!bus->polling_mode) { schedule_timeout(msecs_to_jiffies(2)); - } else if (loopcounter > 3000) { + } else if (bus->needs_damn_long_delay || + loopcounter > LOOP_COUNT_MAX) { + if (loopcounter > LOOP_COUNT_MAX && !warned) { + dev_dbg_ratelimited(bus->dev, + "too slow response, last cmd=%#08x\n", + bus->last_cmd[addr]); + warned = true; + } msleep(2); /* temporary workaround */ } else { udelay(10); diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 870102f00efd..d6a7bda28925 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -784,53 +784,12 @@ static int azx_rirb_get_response(struct hdac_bus *bus, unsigned int addr, { struct azx *chip = bus_to_azx(bus); struct hda_bus *hbus = &chip->bus; - unsigned long timeout; - unsigned long loopcounter; - wait_queue_entry_t wait; - bool warned = false; + int err; - init_wait_entry(&wait, 0); again: - timeout = jiffies + msecs_to_jiffies(1000); - - for (loopcounter = 0;; loopcounter++) { - spin_lock_irq(&bus->reg_lock); - if (!bus->polling_mode) - prepare_to_wait(&bus->rirb_wq, &wait, - TASK_UNINTERRUPTIBLE); - if (bus->polling_mode) - snd_hdac_bus_update_rirb(bus); - if (!bus->rirb.cmds[addr]) { - if (res) - *res = bus->rirb.res[addr]; /* the last value */ - if (!bus->polling_mode) - finish_wait(&bus->rirb_wq, &wait); - spin_unlock_irq(&bus->reg_lock); - return 0; - } - spin_unlock_irq(&bus->reg_lock); - if (time_after(jiffies, timeout)) - break; -#define LOOP_COUNT_MAX 3000 - if (!bus->polling_mode) { - schedule_timeout(msecs_to_jiffies(2)); - } else if (hbus->needs_damn_long_delay || - loopcounter > LOOP_COUNT_MAX) { - if (loopcounter > LOOP_COUNT_MAX && !warned) { - dev_dbg_ratelimited(chip->card->dev, - "too slow response, last cmd=%#08x\n", - bus->last_cmd[addr]); - warned = true; - } - msleep(2); /* temporary workaround */ - } else { - udelay(10); - cond_resched(); - } - } - - if (!bus->polling_mode) - finish_wait(&bus->rirb_wq, &wait); + err = snd_hdac_bus_get_response(bus, addr, res); + if (!err) + return 0; if (hbus->no_response_fallback) return -EIO; diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index c86539cdbd4b..c7efb6f66bdc 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -1809,7 +1809,7 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci, if (chip->driver_type == AZX_DRIVER_NVIDIA) { dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n"); - chip->bus.needs_damn_long_delay = 1; + chip->bus.core.needs_damn_long_delay = 1; } err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c index 269f242fcbfd..9d0784aed9e4 100644 --- a/sound/pci/hda/hda_tegra.c +++ b/sound/pci/hda/hda_tegra.c @@ -394,7 +394,7 @@ static int hda_tegra_create(struct snd_card *card, if (err < 0) return err; - chip->bus.needs_damn_long_delay = 1; + chip->bus.core.needs_damn_long_delay = 1; err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); if (err < 0) { diff --git a/sound/pci/hda/patch_ca0110.c b/sound/pci/hda/patch_ca0110.c index e780922a1190..1818ce67f761 100644 --- a/sound/pci/hda/patch_ca0110.c +++ b/sound/pci/hda/patch_ca0110.c @@ -53,7 +53,7 @@ static int patch_ca0110(struct hda_codec *codec) codec->patch_ops = ca0110_patch_ops; spec->multi_cap_vol = 1; - codec->bus->needs_damn_long_delay = 1; + codec->bus->core.needs_damn_long_delay = 1; err = ca0110_parse_auto_config(codec); if (err < 0) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 894f3f509e76..8ecb53bce509 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -4908,7 +4908,7 @@ static int patch_stac927x(struct hda_codec *codec) * The below flag enables the longer delay (see get_response * in hda_intel.c). */ - codec->bus->needs_damn_long_delay = 1; + codec->bus->core.needs_damn_long_delay = 1; snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PROBE); -- cgit v1.2.3-70-g09d2