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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 05:40:56 +07:00
[ALSA] sb8 - Use platform_device and add PnP support
Modules: SB8 driver Rewrite the probe/remove with platform_device. Add PM support, too. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
Jaroslav Kysela
parent
6f045616af
commit
67be445871
@ -21,13 +21,14 @@
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/sb.h>
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#include <sound/opl3.h>
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#define SNDRV_LEGACY_AUTO_PROBE
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#include <sound/initval.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
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@ -57,10 +58,9 @@ MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
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struct snd_sb8 {
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struct resource *fm_res; /* used to block FM i/o region for legacy cards */
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struct snd_sb *chip;
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};
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static struct snd_card *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
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{
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struct snd_sb *chip = dev_id;
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@ -81,8 +81,9 @@ static void snd_sb8_free(struct snd_card *card)
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release_and_free_resource(acard->fm_res);
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}
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static int __init snd_sb8_probe(int dev)
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static int __init snd_sb8_probe(struct platform_device *pdev)
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{
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int dev = pdev->id;
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struct snd_sb *chip;
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struct snd_card *card;
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struct snd_sb8 *acard;
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@ -93,20 +94,44 @@ static int __init snd_sb8_probe(int dev)
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sizeof(struct snd_sb8));
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if (card == NULL)
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return -ENOMEM;
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acard = (struct snd_sb8 *)card->private_data;
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acard = card->private_data;
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card->private_free = snd_sb8_free;
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/* block the 0x388 port to avoid PnP conflicts */
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acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
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if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
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snd_sb8_interrupt,
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dma8[dev],
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-1,
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SB_HW_AUTO,
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&chip)) < 0)
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goto _err;
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if (port[dev] != SNDRV_AUTO_PORT) {
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if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
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snd_sb8_interrupt,
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dma8[dev],
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-1,
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SB_HW_AUTO,
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&chip)) < 0)
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goto _err;
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} else {
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/* auto-probe legacy ports */
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static unsigned long possible_ports[] = {
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0x220, 0x240, 0x260,
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
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err = snd_sbdsp_create(card, possible_ports[i],
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irq[dev],
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snd_sb8_interrupt,
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dma8[dev],
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-1,
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SB_HW_AUTO,
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&chip);
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if (err >= 0) {
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port[dev] = possible_ports[i];
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break;
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}
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}
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if (i >= ARRAY_SIZE(possible_ports))
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goto _err;
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}
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acard->chip = chip;
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if (chip->hardware >= SB_HW_16) {
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if (chip->hardware == SB_HW_ALS100)
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snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
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@ -153,13 +178,12 @@ static int __init snd_sb8_probe(int dev)
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chip->port,
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irq[dev], dma8[dev]);
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if ((err = snd_card_set_generic_dev(card)) < 0)
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goto _err;
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snd_card_set_dev(card, &pdev->dev);
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if ((err = snd_card_register(card)) < 0)
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goto _err;
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snd_sb8_cards[dev] = card;
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platform_set_drvdata(pdev, card);
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return 0;
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_err:
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@ -167,53 +191,89 @@ static int __init snd_sb8_probe(int dev)
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return err;
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}
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static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
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static int snd_sb8_remove(struct platform_device *pdev)
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{
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static int dev;
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int res;
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for ( ; dev < SNDRV_CARDS; dev++) {
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if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
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continue;
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port[dev] = xport;
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res = snd_sb8_probe(dev);
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if (res < 0)
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port[dev] = SNDRV_AUTO_PORT;
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return res;
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}
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return -ENODEV;
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snd_card_free(platform_get_drvdata(pdev));
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platform_set_drvdata(pdev, NULL);
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return 0;
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}
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#ifdef CONFIG_PM
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static int snd_sb8_suspend(struct platform_device *dev, pm_message_t state)
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{
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struct snd_card *card = platform_get_drvdata(dev);
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struct snd_sb8 *acard = card->private_data;
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struct snd_sb *chip = acard->chip;
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
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snd_pcm_suspend_all(chip->pcm);
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snd_sbmixer_suspend(chip);
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return 0;
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}
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static int snd_sb8_resume(struct platform_device *dev)
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{
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struct snd_card *card = platform_get_drvdata(dev);
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struct snd_sb8 *acard = card->private_data;
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struct snd_sb *chip = acard->chip;
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snd_sbdsp_reset(chip);
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snd_sbmixer_resume(chip);
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snd_power_change_state(card, SNDRV_CTL_POWER_D0);
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return 0;
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}
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#endif
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#define SND_SB8_DRIVER "snd_sb8"
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static struct platform_driver snd_sb8_driver = {
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.probe = snd_sb8_probe,
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.remove = snd_sb8_remove,
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#ifdef CONFIG_PM
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.suspend = snd_sb8_suspend,
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.resume = snd_sb8_resume,
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#endif
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.driver = {
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.name = SND_SB8_DRIVER
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},
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};
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static int __init alsa_card_sb8_init(void)
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{
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static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
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int dev, cards, i;
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int i, cards, err;
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for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
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if (port[dev] == SNDRV_AUTO_PORT)
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continue;
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if (snd_sb8_probe(dev) >= 0)
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cards++;
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err = platform_driver_register(&snd_sb8_driver);
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if (err < 0)
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return err;
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cards = 0;
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for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
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struct platform_device *device;
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device = platform_device_register_simple(SND_SB8_DRIVER,
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i, NULL, 0);
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if (IS_ERR(device)) {
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err = PTR_ERR(device);
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goto errout;
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}
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cards++;
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}
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i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
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if (i > 0)
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cards += i;
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if (!cards) {
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#ifdef MODULE
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snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
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#endif
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return -ENODEV;
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err = -ENODEV;
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goto errout;
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}
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return 0;
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errout:
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platform_driver_unregister(&snd_sb8_driver);
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return err;
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}
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static void __exit alsa_card_sb8_exit(void)
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{
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int idx;
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for (idx = 0; idx < SNDRV_CARDS; idx++)
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snd_card_free(snd_sb8_cards[idx]);
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platform_driver_unregister(&snd_sb8_driver);
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}
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module_init(alsa_card_sb8_init)
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