Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Driver for generic MPU-401 boards (UART mode only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/pnp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <sound/mpu401.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <sound/initval.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) MODULE_DESCRIPTION("MPU-401 UART");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #ifdef CONFIG_PNP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static bool pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* MPU-401 port number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* MPU-401 IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static bool uart_enter[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) module_param_array(index, int, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) module_param_array(id, charp, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) module_param_array(enable, bool, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #ifdef CONFIG_PNP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) module_param_array(pnp, bool, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) module_param_hw_array(port, long, ioport, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) module_param_hw_array(irq, int, irq, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) module_param_array(uart_enter, bool, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) MODULE_PARM_DESC(uart_enter, "Issue UART_ENTER command at open.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static struct platform_device *platform_devices[SNDRV_CARDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static int pnp_registered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static unsigned int snd_mpu401_devices;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static int snd_mpu401_create(struct device *devptr, int dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			     struct snd_card **rcard)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct snd_card *card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	if (!uart_enter[dev])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	*rcard = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			   0, &card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	strcpy(card->driver, "MPU-401 UART");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	strcpy(card->shortname, card->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (irq[dev] >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		strcat(card->longname, "polled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 				  irq[dev], NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		goto _err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	*rcard = card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85)  _err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	snd_card_free(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static int snd_mpu401_probe(struct platform_device *devptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	int dev = devptr->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	struct snd_card *card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	if (port[dev] == SNDRV_AUTO_PORT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		snd_printk(KERN_ERR "specify port\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	if (irq[dev] == SNDRV_AUTO_IRQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		snd_printk(KERN_ERR "specify or disable IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	err = snd_mpu401_create(&devptr->dev, dev, &card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	if ((err = snd_card_register(card)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		snd_card_free(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	platform_set_drvdata(devptr, card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static int snd_mpu401_remove(struct platform_device *devptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	snd_card_free(platform_get_drvdata(devptr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define SND_MPU401_DRIVER	"snd_mpu401"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static struct platform_driver snd_mpu401_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	.probe		= snd_mpu401_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	.remove		= snd_mpu401_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		.name	= SND_MPU401_DRIVER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #ifdef CONFIG_PNP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #define IO_EXTENT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static const struct pnp_device_id snd_mpu401_pnpids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	{ .id = "PNPb006" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	{ .id = "" }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int snd_mpu401_pnp(int dev, struct pnp_dev *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			  const struct pnp_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	if (!pnp_port_valid(device, 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	    pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		snd_printk(KERN_ERR "no PnP port\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	if (pnp_port_len(device, 0) < IO_EXTENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			   (unsigned long long)pnp_port_len(device, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			   IO_EXTENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	port[dev] = pnp_port_start(device, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	if (!pnp_irq_valid(device, 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	    pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		snd_printk(KERN_WARNING "no PnP irq, using polling\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		irq[dev] = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		irq[dev] = pnp_irq(device, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static int snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 				const struct pnp_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	static int dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	struct snd_card *card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	for ( ; dev < SNDRV_CARDS; ++dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		if (!enable[dev] || !pnp[dev])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		err = snd_mpu401_pnp(dev, pnp_dev, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		err = snd_mpu401_create(&pnp_dev->dev, dev, &card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		if ((err = snd_card_register(card)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 			snd_card_free(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		pnp_set_drvdata(pnp_dev, card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		snd_mpu401_devices++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		++dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static void snd_mpu401_pnp_remove(struct pnp_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	snd_card_disconnect(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	snd_card_free_when_closed(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static struct pnp_driver snd_mpu401_pnp_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	.name = "mpu401",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	.id_table = snd_mpu401_pnpids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	.probe = snd_mpu401_pnp_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	.remove = snd_mpu401_pnp_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static struct pnp_driver snd_mpu401_pnp_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static void snd_mpu401_unregister_all(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (pnp_registered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		pnp_unregister_driver(&snd_mpu401_pnp_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		platform_device_unregister(platform_devices[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	platform_driver_unregister(&snd_mpu401_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int __init alsa_card_mpu401_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	for (i = 0; i < SNDRV_CARDS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		struct platform_device *device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		if (! enable[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #ifdef CONFIG_PNP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		if (pnp[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		device = platform_device_register_simple(SND_MPU401_DRIVER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 							 i, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		if (IS_ERR(device))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		if (!platform_get_drvdata(device)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			platform_device_unregister(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		platform_devices[i] = device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		snd_mpu401_devices++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	err = pnp_register_driver(&snd_mpu401_pnp_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		pnp_registered = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (!snd_mpu401_devices) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) #ifdef MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		printk(KERN_ERR "MPU-401 device not found or device busy\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		snd_mpu401_unregister_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static void __exit alsa_card_mpu401_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	snd_mpu401_unregister_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) module_init(alsa_card_mpu401_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) module_exit(alsa_card_mpu401_exit)