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linux_dsm_epyc7002/sound/isa/sb/jazz16.c
Takashi Iwai 2a076d0af4 ALSA: sb: More constifications 
Apply const prefix to each possible place: the static tables for the
resources, controls, registers, values and parameters.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/20200105144823.29547-46-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-05 16:15:00 +01:00

390 lines
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/*
* jazz16.c - driver for Media Vision Jazz16 based soundcards.
* Copyright (C) 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
* Based on patches posted by Rask Ingemann Lambertsen and Rene Herman.
* Based on OSS Sound Blaster driver.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/dma.h>
#include <linux/isa.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/sb.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
#define PFX "jazz16: "
MODULE_DESCRIPTION("Media Vision Jazz16");
MODULE_SUPPORTED_DEVICE("{{Media Vision ??? },"
"{RTL,RTL3000}}");
MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
MODULE_LICENSE("GPL");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static unsigned long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
static unsigned long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Media Vision Jazz16 based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Media Vision Jazz16 based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Media Vision Jazz16 based soundcard.");
module_param_hw_array(port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for jazz16 driver.");
module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for jazz16 driver.");
module_param_hw_array(irq, int, irq, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for jazz16 driver.");
module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for jazz16 driver.");
module_param_hw_array(dma8, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma8, "DMA8 # for jazz16 driver.");
module_param_hw_array(dma16, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma16, "DMA16 # for jazz16 driver.");
#define SB_JAZZ16_WAKEUP 0xaf
#define SB_JAZZ16_SET_PORTS 0x50
#define SB_DSP_GET_JAZZ_BRD_REV 0xfa
#define SB_JAZZ16_SET_DMAINTR 0xfb
#define SB_DSP_GET_JAZZ_MODEL 0xfe
struct snd_card_jazz16 {
struct snd_sb *chip;
};
static irqreturn_t jazz16_interrupt(int irq, void *chip)
{
return snd_sb8dsp_interrupt(chip);
}
static int jazz16_configure_ports(unsigned long port,
unsigned long mpu_port, int idx)
{
unsigned char val;
if (!request_region(0x201, 1, "jazz16 config")) {
snd_printk(KERN_ERR "config port region is already in use.\n");
return -EBUSY;
}
outb(SB_JAZZ16_WAKEUP - idx, 0x201);
udelay(100);
outb(SB_JAZZ16_SET_PORTS + idx, 0x201);
udelay(100);
val = port & 0x70;
val |= (mpu_port & 0x30) >> 4;
outb(val, 0x201);
release_region(0x201, 1);
return 0;
}
static int jazz16_detect_board(unsigned long port,
unsigned long mpu_port)
{
int err;
int val;
struct snd_sb chip;
if (!request_region(port, 0x10, "jazz16")) {
snd_printk(KERN_ERR "I/O port region is already in use.\n");
return -EBUSY;
}
/* just to call snd_sbdsp_command/reset/get_byte() */
chip.port = port;
err = snd_sbdsp_reset(&chip);
if (err < 0)
for (val = 0; val < 4; val++) {
err = jazz16_configure_ports(port, mpu_port, val);
if (err < 0)
break;
err = snd_sbdsp_reset(&chip);
if (!err)
break;
}
if (err < 0) {
err = -ENODEV;
goto err_unmap;
}
if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_BRD_REV)) {
err = -EBUSY;
goto err_unmap;
}
val = snd_sbdsp_get_byte(&chip);
if (val >= 0x30)
snd_sbdsp_get_byte(&chip);
if ((val & 0xf0) != 0x10) {
err = -ENODEV;
goto err_unmap;
}
if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_MODEL)) {
err = -EBUSY;
goto err_unmap;
}
snd_sbdsp_get_byte(&chip);
err = snd_sbdsp_get_byte(&chip);
snd_printd("Media Vision Jazz16 board detected: rev 0x%x, model 0x%x\n",
val, err);
err = 0;
err_unmap:
release_region(port, 0x10);
return err;
}
static int jazz16_configure_board(struct snd_sb *chip, int mpu_irq)
{
static const unsigned char jazz_irq_bits[] = { 0, 0, 2, 3, 0, 1, 0, 4,
0, 2, 5, 0, 0, 0, 0, 6 };
static const unsigned char jazz_dma_bits[] = { 0, 1, 0, 2, 0, 3, 0, 4 };
if (jazz_dma_bits[chip->dma8] == 0 ||
jazz_dma_bits[chip->dma16] == 0 ||
jazz_irq_bits[chip->irq] == 0)
return -EINVAL;
if (!snd_sbdsp_command(chip, SB_JAZZ16_SET_DMAINTR))
return -EBUSY;
if (!snd_sbdsp_command(chip,
jazz_dma_bits[chip->dma8] |
(jazz_dma_bits[chip->dma16] << 4)))
return -EBUSY;
if (!snd_sbdsp_command(chip,
jazz_irq_bits[chip->irq] |
(jazz_irq_bits[mpu_irq] << 4)))
return -EBUSY;
return 0;
}
static int snd_jazz16_match(struct device *devptr, unsigned int dev)
{
if (!enable[dev])
return 0;
if (port[dev] == SNDRV_AUTO_PORT) {
snd_printk(KERN_ERR "please specify port\n");
return 0;
} else if (port[dev] == 0x200 || (port[dev] & ~0x270)) {
snd_printk(KERN_ERR "incorrect port specified\n");
return 0;
}
if (dma8[dev] != SNDRV_AUTO_DMA &&
dma8[dev] != 1 && dma8[dev] != 3) {
snd_printk(KERN_ERR "dma8 must be 1 or 3\n");
return 0;
}
if (dma16[dev] != SNDRV_AUTO_DMA &&
dma16[dev] != 5 && dma16[dev] != 7) {
snd_printk(KERN_ERR "dma16 must be 5 or 7\n");
return 0;
}
if (mpu_port[dev] != SNDRV_AUTO_PORT &&
(mpu_port[dev] & ~0x030) != 0x300) {
snd_printk(KERN_ERR "incorrect mpu_port specified\n");
return 0;
}
if (mpu_irq[dev] != SNDRV_AUTO_DMA &&
mpu_irq[dev] != 2 && mpu_irq[dev] != 3 &&
mpu_irq[dev] != 5 && mpu_irq[dev] != 7) {
snd_printk(KERN_ERR "mpu_irq must be 2, 3, 5 or 7\n");
return 0;
}
return 1;
}
static int snd_jazz16_probe(struct device *devptr, unsigned int dev)
{
struct snd_card *card;
struct snd_card_jazz16 *jazz16;
struct snd_sb *chip;
struct snd_opl3 *opl3;
static const int possible_irqs[] = {2, 3, 5, 7, 9, 10, 15, -1};
static const int possible_dmas8[] = {1, 3, -1};
static const int possible_dmas16[] = {5, 7, -1};
int err, xirq, xdma8, xdma16, xmpu_port, xmpu_irq;
err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_card_jazz16), &card);
if (err < 0)
return err;
jazz16 = card->private_data;
xirq = irq[dev];
if (xirq == SNDRV_AUTO_IRQ) {
xirq = snd_legacy_find_free_irq(possible_irqs);
if (xirq < 0) {
snd_printk(KERN_ERR "unable to find a free IRQ\n");
err = -EBUSY;
goto err_free;
}
}
xdma8 = dma8[dev];
if (xdma8 == SNDRV_AUTO_DMA) {
xdma8 = snd_legacy_find_free_dma(possible_dmas8);
if (xdma8 < 0) {
snd_printk(KERN_ERR "unable to find a free DMA8\n");
err = -EBUSY;
goto err_free;
}
}
xdma16 = dma16[dev];
if (xdma16 == SNDRV_AUTO_DMA) {
xdma16 = snd_legacy_find_free_dma(possible_dmas16);
if (xdma16 < 0) {
snd_printk(KERN_ERR "unable to find a free DMA16\n");
err = -EBUSY;
goto err_free;
}
}
xmpu_port = mpu_port[dev];
if (xmpu_port == SNDRV_AUTO_PORT)
xmpu_port = 0;
err = jazz16_detect_board(port[dev], xmpu_port);
if (err < 0) {
printk(KERN_ERR "Media Vision Jazz16 board not detected\n");
goto err_free;
}
err = snd_sbdsp_create(card, port[dev], irq[dev],
jazz16_interrupt,
dma8[dev], dma16[dev],
SB_HW_JAZZ16,
&chip);
if (err < 0)
goto err_free;
xmpu_irq = mpu_irq[dev];
if (xmpu_irq == SNDRV_AUTO_IRQ || mpu_port[dev] == SNDRV_AUTO_PORT)
xmpu_irq = 0;
err = jazz16_configure_board(chip, xmpu_irq);
if (err < 0) {
printk(KERN_ERR "Media Vision Jazz16 configuration failed\n");
goto err_free;
}
jazz16->chip = chip;
strcpy(card->driver, "jazz16");
strcpy(card->shortname, "Media Vision Jazz16");
sprintf(card->longname,
"Media Vision Jazz16 at 0x%lx, irq %d, dma8 %d, dma16 %d",
port[dev], xirq, xdma8, xdma16);
err = snd_sb8dsp_pcm(chip, 0);
if (err < 0)
goto err_free;
err = snd_sbmixer_new(chip);
if (err < 0)
goto err_free;
err = snd_opl3_create(card, chip->port, chip->port + 2,
OPL3_HW_AUTO, 1, &opl3);
if (err < 0)
snd_printk(KERN_WARNING "no OPL device at 0x%lx-0x%lx\n",
chip->port, chip->port + 2);
else {
err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
if (err < 0)
goto err_free;
}
if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
mpu_irq[dev] = -1;
if (snd_mpu401_uart_new(card, 0,
MPU401_HW_MPU401,
mpu_port[dev], 0,
mpu_irq[dev],
NULL) < 0)
snd_printk(KERN_ERR "no MPU-401 device at 0x%lx\n",
mpu_port[dev]);
}
err = snd_card_register(card);
if (err < 0)
goto err_free;
dev_set_drvdata(devptr, card);
return 0;
err_free:
snd_card_free(card);
return err;
}
static int snd_jazz16_remove(struct device *devptr, unsigned int dev)
{
struct snd_card *card = dev_get_drvdata(devptr);
snd_card_free(card);
return 0;
}
#ifdef CONFIG_PM
static int snd_jazz16_suspend(struct device *pdev, unsigned int n,
pm_message_t state)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct snd_card_jazz16 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_sbmixer_suspend(chip);
return 0;
}
static int snd_jazz16_resume(struct device *pdev, unsigned int n)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct snd_card_jazz16 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_sbdsp_reset(chip);
snd_sbmixer_resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
static struct isa_driver snd_jazz16_driver = {
.match = snd_jazz16_match,
.probe = snd_jazz16_probe,
.remove = snd_jazz16_remove,
#ifdef CONFIG_PM
.suspend = snd_jazz16_suspend,
.resume = snd_jazz16_resume,
#endif
.driver = {
.name = "jazz16"
},
};
module_isa_driver(snd_jazz16_driver, SNDRV_CARDS);
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