Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 313 insertions, 0 deletions

diff --git a/sound/isa/sb/sb_common.c b/sound/isa/sb/sb_common.c
new file mode 100644
index 00000000000..5b6bde213ea
--- /dev/null
+++ b/sound/isa/sb/sb_common.c
@@ -0,0 +1,313 @@
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *                   Uros Bizjak <uros@kss-loka.si>
+ *
+ *  Lowlevel routines for control of Sound Blaster cards
+ *
+ *   This program 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 program 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 <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <sound/core.h>
+#include <sound/sb.h>
+#include <sound/initval.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
+MODULE_LICENSE("GPL");
+
+#define BUSY_LOOPS 100000
+
+#undef IO_DEBUG
+
+int snd_sbdsp_command(sb_t *chip, unsigned char val)
+{
+	int i;
+#ifdef IO_DEBUG
+	snd_printk("command 0x%x\n", val);
+#endif
+	for (i = BUSY_LOOPS; i; i--)
+		if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
+			outb(val, SBP(chip, COMMAND));
+			return 1;
+		}
+	snd_printd("%s [0x%lx]: timeout (0x%x)\n", __FUNCTION__, chip->port, val);
+	return 0;
+}
+
+int snd_sbdsp_get_byte(sb_t *chip)
+{
+	int val;
+	int i;
+	for (i = BUSY_LOOPS; i; i--) {
+		if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
+			val = inb(SBP(chip, READ));
+#ifdef IO_DEBUG
+			snd_printk("get_byte 0x%x\n", val);
+#endif
+			return val;
+		}
+	}
+	snd_printd("%s [0x%lx]: timeout\n", __FUNCTION__, chip->port);
+	return -ENODEV;
+}
+
+int snd_sbdsp_reset(sb_t *chip)
+{
+	int i;
+
+	outb(1, SBP(chip, RESET));
+	udelay(10);
+	outb(0, SBP(chip, RESET));
+	udelay(30);
+	for (i = BUSY_LOOPS; i; i--)
+		if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
+			if (inb(SBP(chip, READ)) == 0xaa)
+				return 0;
+			else
+				break;
+		}
+	snd_printdd("%s [0x%lx] failed...\n", __FUNCTION__, chip->port);
+	return -ENODEV;
+}
+
+static int snd_sbdsp_version(sb_t * chip)
+{
+	unsigned int result = -ENODEV;
+
+	snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
+	result = (short) snd_sbdsp_get_byte(chip) << 8;
+	result |= (short) snd_sbdsp_get_byte(chip);
+	return result;
+}
+
+static int snd_sbdsp_probe(sb_t * chip)
+{
+	int version;
+	int major, minor;
+	char *str;
+	unsigned long flags;
+
+	/*
+	 *  initialization sequence
+	 */
+
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	if (snd_sbdsp_reset(chip) < 0) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return -ENODEV;
+	}
+	version = snd_sbdsp_version(chip);
+	if (version < 0) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return -ENODEV;
+	}
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	major = version >> 8;
+	minor = version & 0xff;
+	snd_printdd("SB [0x%lx]: DSP chip found, version = %i.%i\n",
+		    chip->port, major, minor);
+	
+	switch (chip->hardware) {
+	case SB_HW_AUTO:
+		switch (major) {
+		case 1:
+			chip->hardware = SB_HW_10;
+			str = "1.0";
+			break;
+		case 2:
+			if (minor) {
+				chip->hardware = SB_HW_201;
+				str = "2.01+";
+			} else {
+				chip->hardware = SB_HW_20;
+				str = "2.0";
+			}
+			break;
+		case 3:
+			chip->hardware = SB_HW_PRO;
+			str = "Pro";
+			break;
+		case 4:
+			chip->hardware = SB_HW_16;
+			str = "16";
+			break;
+		default:
+			snd_printk("SB [0x%lx]: unknown DSP chip version %i.%i\n",
+				   chip->port, major, minor);
+			return -ENODEV;
+		}
+		break;
+	case SB_HW_ALS100:
+		str = "16 (ALS-100)";
+		break;
+	case SB_HW_ALS4000:
+		str = "16 (ALS-4000)";
+		break;
+	case SB_HW_DT019X:
+		str = "(DT019X/ALS007)";
+		break;
+	default:
+		return -ENODEV;
+	}
+	sprintf(chip->name, "Sound Blaster %s", str);
+	chip->version = (major << 8) | minor;
+	return 0;
+}
+
+static int snd_sbdsp_free(sb_t *chip)
+{
+	if (chip->res_port) {
+		release_resource(chip->res_port);
+		kfree_nocheck(chip->res_port);
+	}
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) chip);
+#ifdef CONFIG_ISA
+	if (chip->dma8 >= 0) {
+		disable_dma(chip->dma8);
+		free_dma(chip->dma8);
+	}
+	if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
+		disable_dma(chip->dma16);
+		free_dma(chip->dma16);
+	}
+#endif
+	kfree(chip);
+	return 0;
+}
+
+static int snd_sbdsp_dev_free(snd_device_t *device)
+{
+	sb_t *chip = device->device_data;
+	return snd_sbdsp_free(chip);
+}
+
+int snd_sbdsp_create(snd_card_t *card,
+		     unsigned long port,
+		     int irq,
+		     irqreturn_t (*irq_handler)(int, void *, struct pt_regs *),
+		     int dma8,
+		     int dma16,
+		     unsigned short hardware,
+		     sb_t **r_chip)
+{
+	sb_t *chip;
+	int err;
+	static snd_device_ops_t ops = {
+		.dev_free =	snd_sbdsp_dev_free,
+	};
+
+	snd_assert(r_chip != NULL, return -EINVAL);
+	*r_chip = NULL;
+	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+	spin_lock_init(&chip->reg_lock);
+	spin_lock_init(&chip->open_lock);
+	spin_lock_init(&chip->midi_input_lock);
+	spin_lock_init(&chip->mixer_lock);
+	chip->irq = -1;
+	chip->dma8 = -1;
+	chip->dma16 = -1;
+	chip->port = port;
+	
+	if (request_irq(irq, irq_handler, hardware == SB_HW_ALS4000 ?
+			SA_INTERRUPT | SA_SHIRQ : SA_INTERRUPT,
+			"SoundBlaster", (void *) chip)) {
+		snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
+		snd_sbdsp_free(chip);
+		return -EBUSY;
+	}
+	chip->irq = irq;
+
+	if (hardware == SB_HW_ALS4000)
+		goto __skip_allocation;
+	
+	if ((chip->res_port = request_region(port, 16, "SoundBlaster")) == NULL) {
+		snd_printk(KERN_ERR "sb: can't grab port 0x%lx\n", port);
+		snd_sbdsp_free(chip);
+		return -EBUSY;
+	}
+
+#ifdef CONFIG_ISA
+	if (dma8 >= 0 && request_dma(dma8, "SoundBlaster - 8bit")) {
+		snd_printk(KERN_ERR "sb: can't grab DMA8 %d\n", dma8);
+		snd_sbdsp_free(chip);
+		return -EBUSY;
+	}
+	chip->dma8 = dma8;
+	if (dma16 >= 0) {
+		if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
+			/* no duplex */
+			dma16 = -1;
+		} else if (request_dma(dma16, "SoundBlaster - 16bit")) {
+			snd_printk(KERN_ERR "sb: can't grab DMA16 %d\n", dma16);
+			snd_sbdsp_free(chip);
+			return -EBUSY;
+		}
+	}
+	chip->dma16 = dma16;
+#endif
+
+      __skip_allocation:
+	chip->card = card;
+	chip->hardware = hardware;
+	if ((err = snd_sbdsp_probe(chip)) < 0) {
+		snd_sbdsp_free(chip);
+		return err;
+	}
+	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+		snd_sbdsp_free(chip);
+		return err;
+	}
+	*r_chip = chip;
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_sbdsp_command);
+EXPORT_SYMBOL(snd_sbdsp_get_byte);
+EXPORT_SYMBOL(snd_sbdsp_reset);
+EXPORT_SYMBOL(snd_sbdsp_create);
+/* sb_mixer.c */
+EXPORT_SYMBOL(snd_sbmixer_write);
+EXPORT_SYMBOL(snd_sbmixer_read);
+EXPORT_SYMBOL(snd_sbmixer_new);
+EXPORT_SYMBOL(snd_sbmixer_add_ctl);
+
+/*
+ *  INIT part
+ */
+
+static int __init alsa_sb_common_init(void)
+{
+	return 0;
+}
+
+static void __exit alsa_sb_common_exit(void)
+{
+}
+
+module_init(alsa_sb_common_init)
+module_exit(alsa_sb_common_exit)