summaryrefslogtreecommitdiff
path: root/sound/pci/bt87x.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/pci/bt87x.c')
-rw-r--r--sound/pci/bt87x.c206
1 files changed, 65 insertions, 141 deletions
diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index de0234294c25..383def1f2af7 100644
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -1,24 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
*
* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
*
* based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
- *
- *
- * This driver is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This driver is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
@@ -37,14 +23,12 @@
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
- "{Brooktree,Bt879}}");
static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
static int digital_rate[SNDRV_CARDS]; /* digital input rate */
-static bool load_all; /* allow to load the non-whitelisted cards */
+static bool load_all; /* allow to load cards not the allowlist */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
@@ -55,7 +39,7 @@ MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
module_param_array(digital_rate, int, NULL, 0444);
MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
module_param(load_all, bool, 0444);
-MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
+MODULE_PARM_DESC(load_all, "Allow to load cards not on the allowlist");
/* register offsets */
@@ -164,7 +148,7 @@ struct snd_bt87x_board {
unsigned no_digital:1; /* No digital input */
};
-static struct snd_bt87x_board snd_bt87x_boards[] = {
+static const struct snd_bt87x_board snd_bt87x_boards[] = {
[SND_BT87X_BOARD_UNKNOWN] = {
.dig_rate = 32000, /* just a guess */
},
@@ -228,14 +212,14 @@ static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substrea
unsigned int periods, unsigned int period_bytes)
{
unsigned int i, offset;
- u32 *risc;
+ __le32 *risc;
if (chip->dma_risc.area == NULL) {
- if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
+ if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
return -ENOMEM;
}
- risc = (u32 *)chip->dma_risc.area;
+ risc = (__le32 *)chip->dma_risc.area;
offset = 0;
*risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
*risc++ = cpu_to_le32(0);
@@ -285,13 +269,8 @@ static void snd_bt87x_free_risc(struct snd_bt87x *chip)
static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
{
- u16 pci_status;
+ int pci_status = pci_status_get_and_clear_errors(chip->pci);
- pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
- pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
- PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
- PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
- pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
if (pci_status != PCI_STATUS_DETECTED_PARITY)
dev_err(chip->card->dev,
"Aieee - PCI error! status %#08x, PCI status %#04x\n",
@@ -346,14 +325,15 @@ static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
current_block = chip->current_line * 16 / chip->lines;
irq_block = status >> INT_RISCS_SHIFT;
if (current_block != irq_block)
- chip->current_line = (irq_block * chip->lines + 15) / 16;
+ chip->current_line = DIV_ROUND_UP(irq_block * chip->lines,
+ 16);
snd_pcm_period_elapsed(chip->substream);
}
return IRQ_HANDLED;
}
-static struct snd_pcm_hardware snd_bt87x_digital_hw = {
+static const struct snd_pcm_hardware snd_bt87x_digital_hw = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -370,7 +350,7 @@ static struct snd_pcm_hardware snd_bt87x_digital_hw = {
.periods_max = 255,
};
-static struct snd_pcm_hardware snd_bt87x_analog_hw = {
+static const struct snd_pcm_hardware snd_bt87x_analog_hw = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -451,10 +431,10 @@ static int snd_bt87x_close(struct snd_pcm_substream *substream)
{
struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
- spin_lock_irq(&chip->reg_lock);
- chip->reg_control |= CTL_A_PWRDN;
- snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
- spin_unlock_irq(&chip->reg_lock);
+ scoped_guard(spinlock_irq, &chip->reg_lock) {
+ chip->reg_control |= CTL_A_PWRDN;
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ }
chip->substream = NULL;
clear_bit(0, &chip->opened);
@@ -466,12 +446,7 @@ static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
- int err;
- err = snd_pcm_lib_malloc_pages(substream,
- params_buffer_bytes(hw_params));
- if (err < 0)
- return err;
return snd_bt87x_create_risc(chip, substream,
params_periods(hw_params),
params_period_bytes(hw_params));
@@ -482,7 +457,6 @@ static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
snd_bt87x_free_risc(chip);
- snd_pcm_lib_free_pages(substream);
return 0;
}
@@ -492,20 +466,19 @@ static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
int decimation;
- spin_lock_irq(&chip->reg_lock);
+ guard(spinlock_irq)(&chip->reg_lock);
chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
if (runtime->format == SNDRV_PCM_FORMAT_S8)
chip->reg_control |= CTL_DA_SBR;
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
- spin_unlock_irq(&chip->reg_lock);
return 0;
}
static int snd_bt87x_start(struct snd_bt87x *chip)
{
- spin_lock(&chip->reg_lock);
+ guard(spinlock)(&chip->reg_lock);
chip->current_line = 0;
chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
@@ -513,18 +486,16 @@ static int snd_bt87x_start(struct snd_bt87x *chip)
chip->line_bytes | (chip->lines << 16));
snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
- spin_unlock(&chip->reg_lock);
return 0;
}
static int snd_bt87x_stop(struct snd_bt87x *chip)
{
- spin_lock(&chip->reg_lock);
+ guard(spinlock)(&chip->reg_lock);
chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
snd_bt87x_writel(chip, REG_INT_MASK, 0);
snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
- spin_unlock(&chip->reg_lock);
return 0;
}
@@ -553,13 +524,11 @@ static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
static const struct snd_pcm_ops snd_bt87x_pcm_ops = {
.open = snd_bt87x_pcm_open,
.close = snd_bt87x_close,
- .ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_bt87x_hw_params,
.hw_free = snd_bt87x_hw_free,
.prepare = snd_bt87x_prepare,
.trigger = snd_bt87x_trigger,
.pointer = snd_bt87x_pointer,
- .page = snd_pcm_sgbuf_ops_page,
};
static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
@@ -588,13 +557,12 @@ static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
- spin_lock_irq(&chip->reg_lock);
+ guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
| (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = old_control != chip->reg_control;
- spin_unlock_irq(&chip->reg_lock);
return changed;
}
@@ -624,13 +592,12 @@ static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
- spin_lock_irq(&chip->reg_lock);
+ guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
| (value->value.integer.value[0] ? CTL_A_G2X : 0);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = chip->reg_control != old_control;
- spin_unlock_irq(&chip->reg_lock);
return changed;
}
@@ -666,13 +633,12 @@ static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
- spin_lock_irq(&chip->reg_lock);
+ guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
| (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = chip->reg_control != old_control;
- spin_unlock_irq(&chip->reg_lock);
return changed;
}
@@ -684,23 +650,11 @@ static const struct snd_kcontrol_new snd_bt87x_capture_source = {
.put = snd_bt87x_capture_source_put,
};
-static int snd_bt87x_free(struct snd_bt87x *chip)
+static void snd_bt87x_free(struct snd_card *card)
{
- if (chip->mmio)
- snd_bt87x_stop(chip);
- if (chip->irq >= 0)
- free_irq(chip->irq, chip);
- iounmap(chip->mmio);
- pci_release_regions(chip->pci);
- pci_disable_device(chip->pci);
- kfree(chip);
- return 0;
-}
+ struct snd_bt87x *chip = card->private_data;
-static int snd_bt87x_dev_free(struct snd_device *device)
-{
- struct snd_bt87x *chip = device->device_data;
- return snd_bt87x_free(chip);
+ snd_bt87x_stop(chip);
}
static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
@@ -712,52 +666,33 @@ static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
if (err < 0)
return err;
pcm->private_data = chip;
- strcpy(pcm->name, name);
+ strscpy(pcm->name, name);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
- return snd_pcm_lib_preallocate_pages_for_all(pcm,
- SNDRV_DMA_TYPE_DEV_SG,
- snd_dma_pci_data(chip->pci),
- 128 * 1024,
- ALIGN(255 * 4092, 1024));
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
+ &chip->pci->dev,
+ 128 * 1024,
+ ALIGN(255 * 4092, 1024));
+ return 0;
}
static int snd_bt87x_create(struct snd_card *card,
- struct pci_dev *pci,
- struct snd_bt87x **rchip)
+ struct pci_dev *pci)
{
- struct snd_bt87x *chip;
+ struct snd_bt87x *chip = card->private_data;
int err;
- static struct snd_device_ops ops = {
- .dev_free = snd_bt87x_dev_free
- };
-
- *rchip = NULL;
- err = pci_enable_device(pci);
+ err = pcim_enable_device(pci);
if (err < 0)
return err;
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (!chip) {
- pci_disable_device(pci);
- return -ENOMEM;
- }
chip->card = card;
chip->pci = pci;
chip->irq = -1;
spin_lock_init(&chip->reg_lock);
- if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
- kfree(chip);
- pci_disable_device(pci);
- return err;
- }
- chip->mmio = pci_ioremap_bar(pci, 0);
- if (!chip->mmio) {
- dev_err(card->dev, "cannot remap io memory\n");
- err = -ENOMEM;
- goto fail;
- }
+ chip->mmio = pcim_iomap_region(pci, 0, "Bt87x audio");
+ if (IS_ERR(chip->mmio))
+ return PTR_ERR(chip->mmio);
chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
@@ -766,26 +701,18 @@ static int snd_bt87x_create(struct snd_card *card,
snd_bt87x_writel(chip, REG_INT_MASK, 0);
snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
- err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
- KBUILD_MODNAME, chip);
+ err = devm_request_irq(&pci->dev, pci->irq, snd_bt87x_interrupt,
+ IRQF_SHARED, KBUILD_MODNAME, chip);
if (err < 0) {
dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
- goto fail;
+ return err;
}
chip->irq = pci->irq;
+ card->sync_irq = chip->irq;
+ card->private_free = snd_bt87x_free;
pci_set_master(pci);
- synchronize_irq(chip->irq);
-
- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
- if (err < 0)
- goto fail;
- *rchip = chip;
return 0;
-
-fail:
- snd_bt87x_free(chip);
- return err;
}
#define BT_DEVICE(chip, subvend, subdev, id) \
@@ -828,7 +755,7 @@ MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
* (DVB cards use the audio function to transfer MPEG data) */
static struct {
unsigned short subvendor, subdevice;
-} blacklist[] = {
+} denylist[] = {
{0x0071, 0x0101}, /* Nebula Electronics DigiTV */
{0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
{0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
@@ -844,7 +771,7 @@ static struct {
static struct pci_driver driver;
-/* return the id of the card, or a negative value if it's blacklisted */
+/* return the id of the card, or a negative value if it's on the denylist */
static int snd_bt87x_detect_card(struct pci_dev *pci)
{
int i;
@@ -854,9 +781,9 @@ static int snd_bt87x_detect_card(struct pci_dev *pci)
if (supported && supported->driver_data > 0)
return supported->driver_data;
- for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
- if (blacklist[i].subvendor == pci->subsystem_vendor &&
- blacklist[i].subdevice == pci->subsystem_device) {
+ for (i = 0; i < ARRAY_SIZE(denylist); ++i)
+ if (denylist[i].subvendor == pci->subsystem_vendor &&
+ denylist[i].subdevice == pci->subsystem_device) {
dev_dbg(&pci->dev,
"card %#04x-%#04x:%#04x has no audio\n",
pci->device, pci->subsystem_vendor, pci->subsystem_device);
@@ -871,8 +798,8 @@ static int snd_bt87x_detect_card(struct pci_dev *pci)
return SND_BT87X_BOARD_UNKNOWN;
}
-static int snd_bt87x_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
+static int __snd_bt87x_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
@@ -895,14 +822,15 @@ static int snd_bt87x_probe(struct pci_dev *pci,
return -ENOENT;
}
- 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;
- err = snd_bt87x_create(card, pci, &chip);
+ err = snd_bt87x_create(card, pci);
if (err < 0)
- goto _error;
+ return err;
memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
@@ -914,53 +842,50 @@ static int snd_bt87x_probe(struct pci_dev *pci,
err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
if (err < 0)
- goto _error;
+ return err;
}
if (!chip->board.no_analog) {
err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
if (err < 0)
- goto _error;
+ return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_volume, chip));
if (err < 0)
- goto _error;
+ return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_boost, chip));
if (err < 0)
- goto _error;
+ return err;
err = snd_ctl_add(card, snd_ctl_new1(
&snd_bt87x_capture_source, chip));
if (err < 0)
- goto _error;
+ return err;
}
dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital "
"(rate %d Hz)\n", dev, boardid,
chip->board.no_analog ? "no " : "",
chip->board.no_digital ? "no " : "", chip->board.dig_rate);
- strcpy(card->driver, "Bt87x");
+ strscpy(card->driver, "Bt87x");
sprintf(card->shortname, "Brooktree Bt%x", pci->device);
sprintf(card->longname, "%s at %#llx, irq %i",
card->shortname, (unsigned long long)pci_resource_start(pci, 0),
chip->irq);
- strcpy(card->mixername, "Bt87x");
+ strscpy(card->mixername, "Bt87x");
err = snd_card_register(card);
if (err < 0)
- goto _error;
+ return err;
pci_set_drvdata(pci, card);
++dev;
return 0;
-
-_error:
- snd_card_free(card);
- return err;
}
-static void snd_bt87x_remove(struct pci_dev *pci)
+static int snd_bt87x_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
- snd_card_free(pci_get_drvdata(pci));
+ return snd_card_free_on_error(&pci->dev, __snd_bt87x_probe(pci, pci_id));
}
/* default entries for all Bt87x cards - it's not exported */
@@ -975,7 +900,6 @@ static struct pci_driver driver = {
.name = KBUILD_MODNAME,
.id_table = snd_bt87x_ids,
.probe = snd_bt87x_probe,
- .remove = snd_bt87x_remove,
};
static int __init alsa_card_bt87x_init(void)
generated by cgit (git 2.34.1) at 2025-12-25 14:26:52 +0000