diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/pci/echoaudio/echoaudio.c | 566 |
1 files changed, 294 insertions, 272 deletions
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c index 0941a7a17623..c70c3ac4e99a 100644 --- a/sound/pci/echoaudio/echoaudio.c +++ b/sound/pci/echoaudio/echoaudio.c @@ -2,6 +2,7 @@ /* * ALSA driver for Echoaudio soundcards. * Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it> + * Copyright (C) 2020 Mark Hills <mark@xwax.org> */ #include <linux/module.h> @@ -9,7 +10,6 @@ MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>"); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver"); -MODULE_SUPPORTED_DEVICE("{{Echoaudio," ECHOCARD_NAME "}}"); MODULE_DEVICE_TABLE(pci, snd_echo_ids); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; @@ -245,13 +245,20 @@ static int hw_rule_sample_rate(struct snd_pcm_hw_params *params, SNDRV_PCM_HW_PARAM_RATE); struct echoaudio *chip = rule->private; struct snd_interval fixed; + int err; + + mutex_lock(&chip->mode_mutex); - if (!chip->can_set_rate) { + if (chip->can_set_rate) { + err = 0; + } else { snd_interval_any(&fixed); fixed.min = fixed.max = chip->sample_rate; - return snd_interval_refine(rate, &fixed); + err = snd_interval_refine(rate, &fixed); } - return 0; + + mutex_unlock(&chip->mode_mutex); + return err; } @@ -294,42 +301,57 @@ static int pcm_open(struct snd_pcm_substream *substream, snd_pcm_set_sync(substream); /* Only mono and any even number of channels are allowed */ - if ((err = snd_pcm_hw_constraint_list(runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - &pipe->constr)) < 0) + err = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &pipe->constr); + if (err < 0) return err; /* All periods should have the same size */ - if ((err = snd_pcm_hw_constraint_integer(runtime, - SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) return err; /* The hw accesses memory in chunks 32 frames long and they should be 32-bytes-aligned. It's not a requirement, but it seems that IRQs are generated with a resolution of 32 frames. Thus we need the following */ - if ((err = snd_pcm_hw_constraint_step(runtime, 0, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE, - 32)) < 0) + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 32); + if (err < 0) return err; - if ((err = snd_pcm_hw_constraint_step(runtime, 0, - SNDRV_PCM_HW_PARAM_BUFFER_SIZE, - 32)) < 0) + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32); + if (err < 0) return err; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_RATE, - hw_rule_sample_rate, chip, - SNDRV_PCM_HW_PARAM_RATE, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + hw_rule_sample_rate, chip, + SNDRV_PCM_HW_PARAM_RATE, -1); + if (err < 0) return err; - /* Finally allocate a page for the scatter-gather list */ - if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, - &chip->pci->dev, - PAGE_SIZE, &pipe->sgpage)) < 0) { + /* Allocate a page for the scatter-gather list */ + err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, + &chip->pci->dev, + PAGE_SIZE, &pipe->sgpage); + if (err < 0) { dev_err(chip->card->dev, "s-g list allocation failed\n"); return err; } + /* + * Sole ownership required to set the rate + */ + + dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d", + chip->opencount, chip->can_set_rate, chip->rate_set); + + chip->opencount++; + if (chip->opencount > 1 && chip->rate_set) + chip->can_set_rate = 0; + return 0; } @@ -340,25 +362,23 @@ static int pcm_analog_in_open(struct snd_pcm_substream *substream) struct echoaudio *chip = snd_pcm_substream_chip(substream); int err; - if ((err = pcm_open(substream, num_analog_busses_in(chip) - - substream->number)) < 0) + err = pcm_open(substream, + num_analog_busses_in(chip) - substream->number); + if (err < 0) return err; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - hw_rule_capture_channels_by_format, NULL, - SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_capture_channels_by_format, NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) return err; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_FORMAT, - hw_rule_capture_format_by_channels, NULL, - SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_capture_format_by_channels, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) return err; - atomic_inc(&chip->opencount); - if (atomic_read(&chip->opencount) > 1 && chip->rate_set) - chip->can_set_rate=0; - dev_dbg(chip->card->dev, "pcm_analog_in_open cs=%d oc=%d r=%d\n", - chip->can_set_rate, atomic_read(&chip->opencount), - chip->sample_rate); + return 0; } @@ -374,26 +394,24 @@ static int pcm_analog_out_open(struct snd_pcm_substream *substream) #else max_channels = num_analog_busses_out(chip); #endif - if ((err = pcm_open(substream, max_channels - substream->number)) < 0) + err = pcm_open(substream, max_channels - substream->number); + if (err < 0) return err; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - hw_rule_playback_channels_by_format, - NULL, - SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_playback_channels_by_format, + NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) return err; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_FORMAT, - hw_rule_playback_format_by_channels, - NULL, - SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_playback_format_by_channels, + NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) return err; - atomic_inc(&chip->opencount); - if (atomic_read(&chip->opencount) > 1 && chip->rate_set) - chip->can_set_rate=0; - dev_dbg(chip->card->dev, "pcm_analog_out_open cs=%d oc=%d r=%d\n", - chip->can_set_rate, atomic_read(&chip->opencount), - chip->sample_rate); + return 0; } @@ -418,21 +436,19 @@ static int pcm_digital_in_open(struct snd_pcm_substream *substream) if (err < 0) goto din_exit; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - hw_rule_capture_channels_by_format, NULL, - SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_capture_channels_by_format, NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) goto din_exit; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_FORMAT, - hw_rule_capture_format_by_channels, NULL, - SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_capture_format_by_channels, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) goto din_exit; - atomic_inc(&chip->opencount); - if (atomic_read(&chip->opencount) > 1 && chip->rate_set) - chip->can_set_rate=0; - din_exit: mutex_unlock(&chip->mode_mutex); return err; @@ -459,21 +475,21 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream) if (err < 0) goto dout_exit; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - hw_rule_playback_channels_by_format, - NULL, SNDRV_PCM_HW_PARAM_FORMAT, - -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_playback_channels_by_format, + NULL, SNDRV_PCM_HW_PARAM_FORMAT, + -1); + if (err < 0) goto dout_exit; - if ((err = snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_FORMAT, - hw_rule_playback_format_by_channels, - NULL, SNDRV_PCM_HW_PARAM_CHANNELS, - -1)) < 0) + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_playback_format_by_channels, + NULL, SNDRV_PCM_HW_PARAM_CHANNELS, + -1); + if (err < 0) goto dout_exit; - atomic_inc(&chip->opencount); - if (atomic_read(&chip->opencount) > 1 && chip->rate_set) - chip->can_set_rate=0; + dout_exit: mutex_unlock(&chip->mode_mutex); return err; @@ -488,23 +504,29 @@ dout_exit: static int pcm_close(struct snd_pcm_substream *substream) { struct echoaudio *chip = snd_pcm_substream_chip(substream); - int oc; /* Nothing to do here. Audio is already off and pipe will be * freed by its callback */ - atomic_dec(&chip->opencount); - oc = atomic_read(&chip->opencount); - dev_dbg(chip->card->dev, "pcm_close oc=%d cs=%d rs=%d\n", oc, - chip->can_set_rate, chip->rate_set); - if (oc < 2) + mutex_lock(&chip->mode_mutex); + + dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d", + chip->opencount, chip->can_set_rate, chip->rate_set); + + chip->opencount--; + + switch (chip->opencount) { + case 1: chip->can_set_rate = 1; - if (oc == 0) + break; + + case 0: chip->rate_set = 0; - dev_dbg(chip->card->dev, "pcm_close2 oc=%d cs=%d rs=%d\n", oc, - chip->can_set_rate, chip->rate_set); + break; + } + mutex_unlock(&chip->mode_mutex); return 0; } @@ -582,7 +604,7 @@ static int init_engine(struct snd_pcm_substream *substream, /* This stuff is used by the irq handler, so it must be * initialized before chip->substream */ - chip->last_period[pipe_index] = 0; + pipe->last_period = 0; pipe->last_counter = 0; pipe->position = 0; smp_wmb(); @@ -690,7 +712,7 @@ static int pcm_prepare(struct snd_pcm_substream *substream) break; case SNDRV_PCM_FORMAT_S32_BE: format.data_are_bigendian = 1; - /* fall through */ + fallthrough; case SNDRV_PCM_FORMAT_S32_LE: format.bits_per_sample = 32; break; @@ -703,9 +725,22 @@ static int pcm_prepare(struct snd_pcm_substream *substream) if (snd_BUG_ON(pipe_index >= px_num(chip))) return -EINVAL; - if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) + + /* + * We passed checks we can do independently; now take + * exclusive control + */ + + spin_lock_irq(&chip->lock); + + if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) { + spin_unlock_irq(&chip->lock); return -EINVAL; + } + set_audio_format(chip, pipe_index, &format); + spin_unlock_irq(&chip->lock); + return 0; } @@ -738,11 +773,11 @@ static int pcm_trigger(struct snd_pcm_substream *substream, int cmd) pipe = chip->substream[i]->runtime->private_data; switch (pipe->state) { case PIPE_STATE_STOPPED: - chip->last_period[i] = 0; + pipe->last_period = 0; pipe->last_counter = 0; pipe->position = 0; *pipe->dma_counter = 0; - /* fall through */ + fallthrough; case PIPE_STATE_PAUSED: pipe->state = PIPE_STATE_STARTED; break; @@ -786,19 +821,26 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct audiopipe *pipe = runtime->private_data; - size_t cnt, bufsize, pos; + u32 counter, step; - cnt = le32_to_cpu(*pipe->dma_counter); - pipe->position += cnt - pipe->last_counter; - pipe->last_counter = cnt; - bufsize = substream->runtime->buffer_size; - pos = bytes_to_frames(substream->runtime, pipe->position); + /* + * IRQ handling runs concurrently. Do not share tracking of + * counter with it, which would race or require locking + */ - while (pos >= bufsize) { - pipe->position -= frames_to_bytes(substream->runtime, bufsize); - pos -= bufsize; - } - return pos; + counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */ + + step = counter - pipe->last_counter; /* handles wrapping */ + pipe->last_counter = counter; + + /* counter doesn't neccessarily wrap on a multiple of + * buffer_size, so can't derive the position; must + * accumulate */ + + pipe->position += step; + pipe->position %= frames_to_bytes(runtime, runtime->buffer_size); /* wrap */ + + return bytes_to_frames(runtime, pipe->position); } @@ -879,8 +921,9 @@ static int snd_echo_new_pcm(struct echoaudio *chip) separated */ /* PCM#0 Virtual outputs and analog inputs */ - if ((err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip), - num_analog_busses_in(chip), &pcm)) < 0) + err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip), + num_analog_busses_in(chip), &pcm); + if (err < 0) return err; pcm->private_data = chip; chip->analog_pcm = pcm; @@ -891,8 +934,9 @@ static int snd_echo_new_pcm(struct echoaudio *chip) #ifdef ECHOCARD_HAS_DIGITAL_IO /* PCM#1 Digital inputs, no outputs */ - if ((err = snd_pcm_new(chip->card, "Digital PCM", 1, 0, - num_digital_busses_in(chip), &pcm)) < 0) + err = snd_pcm_new(chip->card, "Digital PCM", 1, 0, + num_digital_busses_in(chip), &pcm); + if (err < 0) return err; pcm->private_data = chip; chip->digital_pcm = pcm; @@ -909,9 +953,10 @@ static int snd_echo_new_pcm(struct echoaudio *chip) register two PCM devices: */ /* PCM#0 Analog i/o */ - if ((err = snd_pcm_new(chip->card, "Analog PCM", 0, - num_analog_busses_out(chip), - num_analog_busses_in(chip), &pcm)) < 0) + err = snd_pcm_new(chip->card, "Analog PCM", 0, + num_analog_busses_out(chip), + num_analog_busses_in(chip), &pcm); + if (err < 0) return err; pcm->private_data = chip; chip->analog_pcm = pcm; @@ -922,9 +967,10 @@ static int snd_echo_new_pcm(struct echoaudio *chip) #ifdef ECHOCARD_HAS_DIGITAL_IO /* PCM#1 Digital i/o */ - if ((err = snd_pcm_new(chip->card, "Digital PCM", 1, - num_digital_busses_out(chip), - num_digital_busses_in(chip), &pcm)) < 0) + err = snd_pcm_new(chip->card, "Digital PCM", 1, + num_digital_busses_out(chip), + num_digital_busses_in(chip), &pcm); + if (err < 0) return err; pcm->private_data = chip; chip->digital_pcm = pcm; @@ -1409,7 +1455,7 @@ static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol, /* Do not allow the user to change the digital mode when a pcm device is open because it also changes the number of channels and the allowed sample rates */ - if (atomic_read(&chip->opencount)) { + if (chip->opencount) { changed = -EAGAIN; } else { changed = set_digital_mode(chip, dmode); @@ -1539,7 +1585,8 @@ static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol, if (chip->input_clock != dclock) { mutex_lock(&chip->mode_mutex); spin_lock_irq(&chip->lock); - if ((changed = set_input_clock(chip, dclock)) == 0) + changed = set_input_clock(chip, dclock); + if (!changed) changed = 1; /* no errors */ spin_unlock_irq(&chip->lock); mutex_unlock(&chip->mode_mutex); @@ -1761,14 +1808,43 @@ static const struct snd_kcontrol_new snd_echo_channels_info = { /****************************************************************************** - IRQ Handler + IRQ Handling ******************************************************************************/ +/* Check if a period has elapsed since last interrupt + * + * Don't make any updates to state; PCM core handles this with the + * correct locks. + * + * \return true if a period has elapsed, otherwise false + */ +static bool period_has_elapsed(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct audiopipe *pipe = runtime->private_data; + u32 counter, step; + size_t period_bytes; + + if (pipe->state != PIPE_STATE_STARTED) + return false; + + period_bytes = frames_to_bytes(runtime, runtime->period_size); + + counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */ + + step = counter - pipe->last_period; /* handles wrapping */ + step -= step % period_bytes; /* acknowledge whole periods only */ + + if (step == 0) + return false; /* haven't advanced a whole period yet */ + + pipe->last_period += step; /* used exclusively by us */ + return true; +} static irqreturn_t snd_echo_interrupt(int irq, void *dev_id) { struct echoaudio *chip = dev_id; - struct snd_pcm_substream *substream; - int period, ss, st; + int ss, st; spin_lock(&chip->lock); st = service_irq(chip); @@ -1779,17 +1855,13 @@ static irqreturn_t snd_echo_interrupt(int irq, void *dev_id) /* The hardware doesn't tell us which substream caused the irq, thus we have to check all running substreams. */ for (ss = 0; ss < DSP_MAXPIPES; ss++) { + struct snd_pcm_substream *substream; + substream = chip->substream[ss]; - if (substream && ((struct audiopipe *)substream->runtime-> - private_data)->state == PIPE_STATE_STARTED) { - period = pcm_pointer(substream) / - substream->runtime->period_size; - if (period != chip->last_period[ss]) { - chip->last_period[ss] = period; - spin_unlock(&chip->lock); - snd_pcm_period_elapsed(substream); - spin_lock(&chip->lock); - } + if (substream && period_has_elapsed(substream)) { + spin_unlock(&chip->lock); + snd_pcm_period_elapsed(substream); + spin_lock(&chip->lock); } } spin_unlock(&chip->lock); @@ -1810,104 +1882,63 @@ static irqreturn_t snd_echo_interrupt(int irq, void *dev_id) Module construction / destruction ******************************************************************************/ -static int snd_echo_free(struct echoaudio *chip) +static void snd_echo_free(struct snd_card *card) { + struct echoaudio *chip = card->private_data; + if (chip->comm_page) rest_in_peace(chip); if (chip->irq >= 0) free_irq(chip->irq, chip); - if (chip->comm_page) - snd_dma_free_pages(&chip->commpage_dma_buf); - - iounmap(chip->dsp_registers); - release_and_free_resource(chip->iores); - pci_disable_device(chip->pci); - /* release chip data */ free_firmware_cache(chip); - kfree(chip); - return 0; } - - -static int snd_echo_dev_free(struct snd_device *device) -{ - struct echoaudio *chip = device->device_data; - - return snd_echo_free(chip); -} - - - /* <--snd_echo_probe() */ static int snd_echo_create(struct snd_card *card, - struct pci_dev *pci, - struct echoaudio **rchip) + struct pci_dev *pci) { - struct echoaudio *chip; + struct echoaudio *chip = card->private_data; int err; size_t sz; - static const struct snd_device_ops ops = { - .dev_free = snd_echo_dev_free, - }; - - *rchip = NULL; pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0xC0); - if ((err = pci_enable_device(pci)) < 0) + err = pcim_enable_device(pci); + if (err < 0) return err; pci_set_master(pci); /* Allocate chip if needed */ - if (!*rchip) { - chip = kzalloc(sizeof(*chip), GFP_KERNEL); - if (!chip) { - pci_disable_device(pci); - return -ENOMEM; - } - dev_dbg(card->dev, "chip=%p\n", chip); - spin_lock_init(&chip->lock); - chip->card = card; - chip->pci = pci; - chip->irq = -1; - atomic_set(&chip->opencount, 0); - mutex_init(&chip->mode_mutex); - chip->can_set_rate = 1; - } else { - /* If this was called from the resume function, chip is - * already allocated and it contains current card settings. - */ - chip = *rchip; - } + spin_lock_init(&chip->lock); + chip->card = card; + chip->pci = pci; + chip->irq = -1; + chip->opencount = 0; + mutex_init(&chip->mode_mutex); + chip->can_set_rate = 1; /* PCI resource allocation */ + err = pci_request_regions(pci, ECHOCARD_NAME); + if (err < 0) + return err; + chip->dsp_registers_phys = pci_resource_start(pci, 0); sz = pci_resource_len(pci, 0); if (sz > PAGE_SIZE) sz = PAGE_SIZE; /* We map only the required part */ - if ((chip->iores = request_mem_region(chip->dsp_registers_phys, sz, - ECHOCARD_NAME)) == NULL) { - dev_err(chip->card->dev, "cannot get memory region\n"); - snd_echo_free(chip); - return -EBUSY; - } - chip->dsp_registers = (volatile u32 __iomem *) - ioremap(chip->dsp_registers_phys, sz); + chip->dsp_registers = devm_ioremap(&pci->dev, chip->dsp_registers_phys, sz); if (!chip->dsp_registers) { dev_err(chip->card->dev, "ioremap failed\n"); - snd_echo_free(chip); return -ENOMEM; } if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED, KBUILD_MODNAME, chip)) { dev_err(chip->card->dev, "cannot grab irq\n"); - snd_echo_free(chip); return -EBUSY; } chip->irq = pci->irq; @@ -1915,47 +1946,39 @@ static int snd_echo_create(struct snd_card *card, dev_dbg(card->dev, "pci=%p irq=%d subdev=%04x Init hardware...\n", chip->pci, chip->irq, chip->pci->subsystem_device); + card->private_free = snd_echo_free; + /* Create the DSP comm page - this is the area of memory used for most of the communication with the DSP, which accesses it via bus mastering */ - if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev, - sizeof(struct comm_page), - &chip->commpage_dma_buf) < 0) { - dev_err(chip->card->dev, "cannot allocate the comm page\n"); - snd_echo_free(chip); + chip->commpage_dma_buf = + snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV, + sizeof(struct comm_page)); + if (!chip->commpage_dma_buf) return -ENOMEM; - } - chip->comm_page_phys = chip->commpage_dma_buf.addr; - chip->comm_page = (struct comm_page *)chip->commpage_dma_buf.area; + chip->comm_page_phys = chip->commpage_dma_buf->addr; + chip->comm_page = (struct comm_page *)chip->commpage_dma_buf->area; err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device); if (err >= 0) err = set_mixer_defaults(chip); if (err < 0) { dev_err(card->dev, "init_hw err=%d\n", err); - snd_echo_free(chip); return err; } - if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { - snd_echo_free(chip); - return err; - } - *rchip = chip; - /* Init done ! */ return 0; } - - /* constructor */ -static int snd_echo_probe(struct pci_dev *pci, - const struct pci_device_id *pci_id) +static int __snd_echo_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) { static int dev; struct snd_card *card; struct echoaudio *chip; char *dsp; - int i, err; + __maybe_unused int i; + int err; if (dev >= SNDRV_CARDS) return -ENODEV; @@ -1965,16 +1988,15 @@ static int snd_echo_probe(struct pci_dev *pci, } i = 0; - err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, - 0, &card); + err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + sizeof(*chip), &card); if (err < 0) return err; + chip = card->private_data; - chip = NULL; /* Tells snd_echo_create to allocate chip */ - if ((err = snd_echo_create(card, pci, &chip)) < 0) { - snd_card_free(card); + err = snd_echo_create(card, pci); + if (err < 0) return err; - } strcpy(card->driver, "Echo_" ECHOCARD_NAME); strcpy(card->shortname, chip->card_name); @@ -1987,17 +2009,17 @@ static int snd_echo_probe(struct pci_dev *pci, card->shortname, pci_id->subdevice & 0x000f, dsp, chip->dsp_registers_phys, chip->irq); - if ((err = snd_echo_new_pcm(chip)) < 0) { + err = snd_echo_new_pcm(chip); + if (err < 0) { dev_err(chip->card->dev, "new pcm error %d\n", err); - snd_card_free(card); return err; } #ifdef ECHOCARD_HAS_MIDI if (chip->has_midi) { /* Some Mia's do not have midi */ - if ((err = snd_echo_midi_create(card, chip)) < 0) { + err = snd_echo_midi_create(card, chip); + if (err < 0) { dev_err(chip->card->dev, "new midi error %d\n", err); - snd_card_free(card); return err; } } @@ -2005,56 +2027,66 @@ static int snd_echo_probe(struct pci_dev *pci, #ifdef ECHOCARD_HAS_VMIXER snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip); - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip)); + if (err < 0) + return err; #ifdef ECHOCARD_HAS_LINE_OUT_GAIN err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_output_gain, chip)); if (err < 0) - goto ctl_error; + return err; #endif #else /* ECHOCARD_HAS_VMIXER */ err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_pcm_output_gain, chip)); if (err < 0) - goto ctl_error; + return err; #endif /* ECHOCARD_HAS_VMIXER */ #ifdef ECHOCARD_HAS_INPUT_GAIN - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip)); + if (err < 0) + return err; #endif #ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL - if (!chip->hasnt_input_nominal_level) - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip))) < 0) - goto ctl_error; + if (!chip->hasnt_input_nominal_level) { + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip)); + if (err < 0) + return err; + } #endif #ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip)); + if (err < 0) + return err; #endif - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip)); + if (err < 0) + return err; - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip)); + if (err < 0) + return err; #ifdef ECHOCARD_HAS_MONITOR snd_echo_monitor_mixer.count = num_busses_in(chip) * num_busses_out(chip); - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip)); + if (err < 0) + return err; #endif #ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip)); + if (err < 0) + return err; #endif - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip)); + if (err < 0) + return err; #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH /* Creates a list of available digital modes */ @@ -2063,8 +2095,9 @@ static int snd_echo_probe(struct pci_dev *pci, if (chip->digital_modes & (1 << i)) chip->digital_mode_list[chip->num_digital_modes++] = i; - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip)); + if (err < 0) + return err; #endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */ #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK @@ -2076,37 +2109,41 @@ static int snd_echo_probe(struct pci_dev *pci, if (chip->num_clock_sources > 1) { chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip); - if ((err = snd_ctl_add(chip->card, chip->clock_src_ctl)) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, chip->clock_src_ctl); + if (err < 0) + return err; } #endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */ #ifdef ECHOCARD_HAS_DIGITAL_IO - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip))) < 0) - goto ctl_error; + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip)); + if (err < 0) + return err; #endif #ifdef ECHOCARD_HAS_PHANTOM_POWER - if (chip->has_phantom_power) - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip))) < 0) - goto ctl_error; + if (chip->has_phantom_power) { + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip)); + if (err < 0) + return err; + } #endif err = snd_card_register(card); if (err < 0) - goto ctl_error; + return err; dev_info(card->dev, "Card registered: %s\n", card->longname); pci_set_drvdata(pci, chip); dev++; return 0; - -ctl_error: - dev_err(card->dev, "new control error %d\n", err); - snd_card_free(card); - return err; } +static int snd_echo_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + return snd_card_free_on_error(&pci->dev, __snd_echo_probe(pci, pci_id)); +} #if defined(CONFIG_PM_SLEEP) @@ -2158,7 +2195,6 @@ static int snd_echo_resume(struct device *dev) if (err < 0) { kfree(commpage_bak); dev_err(dev, "resume init_hw err=%d\n", err); - snd_echo_free(chip); return err; } @@ -2185,7 +2221,6 @@ static int snd_echo_resume(struct device *dev) if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED, KBUILD_MODNAME, chip)) { dev_err(chip->card->dev, "cannot grab irq\n"); - snd_echo_free(chip); return -EBUSY; } chip->irq = pci->irq; @@ -2208,18 +2243,6 @@ static SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume); #define SND_ECHO_PM_OPS NULL #endif /* CONFIG_PM_SLEEP */ - -static void snd_echo_remove(struct pci_dev *pci) -{ - struct echoaudio *chip; - - chip = pci_get_drvdata(pci); - if (chip) - snd_card_free(chip->card); -} - - - /****************************************************************************** Everything starts and ends here ******************************************************************************/ @@ -2229,7 +2252,6 @@ static struct pci_driver echo_driver = { .name = KBUILD_MODNAME, .id_table = snd_echo_ids, .probe = snd_echo_probe, - .remove = snd_echo_remove, .driver = { .pm = SND_ECHO_PM_OPS, }, |