[ALSA] Add support for the CS5535 Audio device
Add support for the CS5535 Audio device. I've fixed up some errors as per
Takashi's advice from the thread:
http://lkml.org/lkml/2005/9/15/119
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
cs5535 is a 32bit x86 only device using weird CPU features
Signed-off-by: Jaya Kumar <jayakumar.alsa@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/CREDITS b/CREDITS
index 1b4f869..521f00d 100644
--- a/CREDITS
+++ b/CREDITS
@@ -1883,6 +1883,7 @@
E: jayalk@intworks.biz
W: http://www.intworks.biz
D: Arc monochrome LCD framebuffer driver, x86 reboot fixups
+D: pirq addr, CS5535 alsa audio driver
S: Gurgaon, India
S: Kuala Lumpur, Malaysia
diff --git a/MAINTAINERS b/MAINTAINERS
index 6af6830..93f97b3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -650,6 +650,11 @@
T: git kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6.git
S: Maintained
+CS5535 Audio ALSA driver
+P: Jaya Kumar
+M: jayakumar.alsa@gmail.com
+S: Maintained
+
CYBERPRO FB DRIVER
P: Russell King
M: rmk@arm.linux.org.uk
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 4db67b3..9093f11 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -376,6 +376,10 @@
#define PCI_DEVICE_ID_NS_87560_USB 0x0012
#define PCI_DEVICE_ID_NS_83815 0x0020
#define PCI_DEVICE_ID_NS_83820 0x0022
+#define PCI_DEVICE_ID_NS_CS5535_IDE 0x002d
+#define PCI_DEVICE_ID_NS_CS5535_AUDIO 0x002e
+#define PCI_DEVICE_ID_NS_CS5535_USB 0x002f
+#define PCI_DEVICE_ID_NS_CS5535_VIDEO 0x0030
#define PCI_DEVICE_ID_NS_SATURN 0x0035
#define PCI_DEVICE_ID_NS_SCx200_BRIDGE 0x0500
#define PCI_DEVICE_ID_NS_SCx200_SMI 0x0501
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index 0fb16cf..920305c 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -359,6 +359,19 @@
To compile this driver as a module, choose M here: the module
will be called snd-ens1370.
+config SND_CS5535AUDIO
+ tristate "CS5535 Audio"
+ depends on SND && X86 && !X86_64
+ select SND_PCM
+ select SND_AC97_CODEC
+ help
+ Say Y here to include support for audio on CS5535 chips. It is
+ referred to as NS CS5535 IO or AMD CS5535 IO companion in
+ various literature.
+
+ To compile this driver as a module, choose M here: the module
+ will be called snd-cs5535audio.
+
config SND_ENS1371
tristate "(Creative) Ensoniq AudioPCI 1371/1373"
depends on SND
diff --git a/sound/pci/Makefile b/sound/pci/Makefile
index 42fabfc..82a9c73 100644
--- a/sound/pci/Makefile
+++ b/sound/pci/Makefile
@@ -54,6 +54,7 @@
au88x0/ \
ca0106/ \
cs46xx/ \
+ cs5535audio/ \
emu10k1/ \
hda/ \
ice1712/ \
diff --git a/sound/pci/cs5535audio/Makefile b/sound/pci/cs5535audio/Makefile
new file mode 100644
index 0000000..08d8ee6
--- /dev/null
+++ b/sound/pci/cs5535audio/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for cs5535audio
+#
+
+snd-cs5535audio-objs := cs5535audio.o cs5535audio_pcm.o
+
+# Toplevel Module Dependency
+obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o
diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c
new file mode 100644
index 0000000..920c857
--- /dev/null
+++ b/sound/pci/cs5535audio/cs5535audio.c
@@ -0,0 +1,410 @@
+/*
+ * Driver for audio on multifunction CS5535 companion device
+ * Copyright (C) Jaya Kumar
+ *
+ * Based on Jaroslav Kysela and Takashi Iwai's examples.
+ * This work was sponsored by CIS(M) Sdn Bhd.
+ *
+ * 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 <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <asm/io.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/rawmidi.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/asoundef.h>
+#include "cs5535audio.h"
+
+#define DRIVER_NAME "cs5535audio"
+
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+
+static struct pci_device_id snd_cs5535audio_ids[] = {
+ { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO, PCI_ANY_ID,
+ PCI_ANY_ID, 0, 0, 0, },
+ {}
+};
+
+MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);
+
+static void wait_till_cmd_acked(cs5535audio_t *cs5535au, unsigned long timeout)
+{
+ unsigned long tmp;
+ do {
+ tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
+ if (!(tmp & CMD_NEW))
+ break;
+ msleep(10);
+ } while (--timeout);
+ if (!timeout)
+ snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
+}
+
+static unsigned short snd_cs5535audio_codec_read(cs5535audio_t *cs5535au,
+ unsigned short reg)
+{
+ unsigned long regdata;
+ unsigned long timeout;
+ unsigned long val;
+
+ regdata = ((unsigned long) reg) << 24;
+ regdata |= ACC_CODEC_CNTL_RD_CMD;
+ regdata |= CMD_NEW;
+
+ cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
+ wait_till_cmd_acked(cs5535au, 500);
+
+ timeout = 50;
+ do {
+ val = cs_readl(cs5535au, ACC_CODEC_STATUS);
+ if ( (val & STS_NEW) &&
+ ((unsigned long) reg == ((0xFF000000 & val)>>24)) )
+ break;
+ msleep(10);
+ } while (--timeout);
+ if (!timeout)
+ snd_printk(KERN_ERR "Failure reading cs5535 codec\n");
+
+ return ((unsigned short) val);
+}
+
+static void snd_cs5535audio_codec_write(cs5535audio_t *cs5535au,
+ unsigned short reg, unsigned short val)
+{
+ unsigned long regdata;
+
+ regdata = ((unsigned long) reg) << 24;
+ regdata |= (unsigned long) val;
+ regdata &= CMD_MASK;
+ regdata |= CMD_NEW;
+ regdata &= ACC_CODEC_CNTL_WR_CMD;
+
+ cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
+ wait_till_cmd_acked(cs5535au, 50);
+}
+
+static void snd_cs5535audio_ac97_codec_write(ac97_t *ac97,
+ unsigned short reg, unsigned short val)
+{
+ cs5535audio_t *cs5535au = ac97->private_data;
+ snd_cs5535audio_codec_write(cs5535au, reg, val);
+}
+
+static unsigned short snd_cs5535audio_ac97_codec_read(ac97_t *ac97,
+ unsigned short reg)
+{
+ cs5535audio_t *cs5535au = ac97->private_data;
+ return snd_cs5535audio_codec_read(cs5535au, reg);
+}
+
+static void snd_cs5535audio_mixer_free_ac97(ac97_t *ac97)
+{
+ cs5535audio_t *cs5535audio = ac97->private_data;
+ cs5535audio->ac97 = NULL;
+}
+
+static int snd_cs5535audio_mixer(cs5535audio_t *cs5535au)
+{
+ snd_card_t *card = cs5535au->card;
+ ac97_bus_t *pbus;
+ ac97_template_t ac97;
+ int err;
+ static ac97_bus_ops_t ops = {
+ .write = snd_cs5535audio_ac97_codec_write,
+ .read = snd_cs5535audio_ac97_codec_read,
+ };
+
+ if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
+ return err;
+
+ memset(&ac97, 0, sizeof(ac97));
+ ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
+ ac97.private_data = cs5535au;
+ ac97.pci = cs5535au->pci;
+ ac97.private_free = snd_cs5535audio_mixer_free_ac97;
+
+ if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
+ snd_printk("mixer failed\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static void process_bm0_irq(cs5535audio_t *cs5535au)
+{
+ u8 bm_stat;
+ spin_lock(&cs5535au->reg_lock);
+ bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS);
+ spin_unlock(&cs5535au->reg_lock);
+ if (bm_stat & EOP) {
+ cs5535audio_dma_t *dma;
+ dma = cs5535au->playback_substream->runtime->private_data;
+ snd_pcm_period_elapsed(cs5535au->playback_substream);
+ } else {
+ snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n",
+ bm_stat);
+ }
+}
+
+static void process_bm1_irq(cs5535audio_t *cs5535au)
+{
+ u8 bm_stat;
+ spin_lock(&cs5535au->reg_lock);
+ bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS);
+ spin_unlock(&cs5535au->reg_lock);
+ if (bm_stat & EOP) {
+ cs5535audio_dma_t *dma;
+ dma = cs5535au->capture_substream->runtime->private_data;
+ snd_pcm_period_elapsed(cs5535au->capture_substream);
+ }
+}
+
+static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ u16 acc_irq_stat;
+ u8 bm_stat;
+ unsigned char count;
+ cs5535audio_t *cs5535au = dev_id;
+
+ if (cs5535au == NULL)
+ return IRQ_NONE;
+
+ acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS);
+
+ if (!acc_irq_stat)
+ return IRQ_NONE;
+ for (count=0; count < 10; count++) {
+ if (acc_irq_stat & (1<<count)) {
+ switch (count) {
+ case IRQ_STS:
+ cs_readl(cs5535au, ACC_GPIO_STATUS);
+ break;
+ case WU_IRQ_STS:
+ cs_readl(cs5535au, ACC_GPIO_STATUS);
+ break;
+ case BM0_IRQ_STS:
+ process_bm0_irq(cs5535au);
+ break;
+ case BM1_IRQ_STS:
+ process_bm1_irq(cs5535au);
+ break;
+ case BM2_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
+ break;
+ case BM3_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
+ break;
+ case BM4_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
+ break;
+ case BM5_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
+ break;
+ case BM6_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
+ break;
+ case BM7_IRQ_STS:
+ bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
+ break;
+ default:
+ snd_printk(KERN_ERR "Unexpected irq src\n");
+ break;
+ }
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+static int snd_cs5535audio_free(cs5535audio_t *cs5535au)
+{
+ synchronize_irq(cs5535au->irq);
+ pci_set_power_state(cs5535au->pci, 3);
+
+ if (cs5535au->irq >= 0)
+ free_irq(cs5535au->irq, cs5535au);
+
+ pci_release_regions(cs5535au->pci);
+ pci_disable_device(cs5535au->pci);
+ kfree(cs5535au);
+ return 0;
+}
+
+static int snd_cs5535audio_dev_free(snd_device_t *device)
+{
+ cs5535audio_t *cs5535au = device->device_data;
+ return snd_cs5535audio_free(cs5535au);
+}
+
+static int __devinit snd_cs5535audio_create(snd_card_t *card,
+ struct pci_dev *pci,
+ cs5535audio_t **rcs5535au)
+{
+ cs5535audio_t *cs5535au;
+
+ int err;
+ static snd_device_ops_t ops = {
+ .dev_free = snd_cs5535audio_dev_free,
+ };
+
+ *rcs5535au = NULL;
+ if ((err = pci_enable_device(pci)) < 0)
+ return err;
+
+ if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
+ printk(KERN_WARNING "unable to get 32bit dma\n");
+ err = -ENXIO;
+ goto pcifail;
+ }
+
+ cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL);
+ if (cs5535au == NULL) {
+ err = -ENOMEM;
+ goto pcifail;
+ }
+
+ spin_lock_init(&cs5535au->reg_lock);
+ cs5535au->card = card;
+ cs5535au->pci = pci;
+ cs5535au->irq = -1;
+
+ if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) {
+ kfree(cs5535au);
+ goto pcifail;
+ }
+
+ cs5535au->port = pci_resource_start(pci, 0);
+
+ if (request_irq(pci->irq, snd_cs5535audio_interrupt,
+ SA_INTERRUPT|SA_SHIRQ, "CS5535 Audio", cs5535au)) {
+ snd_printk("unable to grab IRQ %d\n", pci->irq);
+ err = -EBUSY;
+ goto sndfail;
+ }
+
+ cs5535au->irq = pci->irq;
+ pci_set_master(pci);
+
+ if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
+ cs5535au, &ops)) < 0)
+ goto sndfail;
+
+ snd_card_set_dev(card, &pci->dev);
+
+ *rcs5535au = cs5535au;
+ return 0;
+
+sndfail: /* leave the device alive, just kill the snd */
+ snd_cs5535audio_free(cs5535au);
+ return err;
+
+pcifail:
+ pci_disable_device(pci);
+ return err;
+}
+
+static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ static int dev;
+ snd_card_t *card;
+ cs5535audio_t *cs5535au;
+ int err;
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[dev]) {
+ dev++;
+ return -ENOENT;
+ }
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+ if (card == NULL)
+ return -ENOMEM;
+
+ if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
+ goto probefail_out;
+
+ if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
+ goto probefail_out;
+
+ if ((err = snd_cs5535audio_pcm(cs5535au)) < 0)
+ goto probefail_out;
+
+ strcpy(card->driver, DRIVER_NAME);
+
+ strcpy(card->shortname, "CS5535 Audio");
+ sprintf(card->longname, "%s %s at 0x%lx, irq %i",
+ card->shortname, card->driver,
+ cs5535au->port, cs5535au->irq);
+
+ if ((err = snd_card_register(card)) < 0)
+ goto probefail_out;
+
+ pci_set_drvdata(pci, card);
+ dev++;
+ return 0;
+
+probefail_out:
+ snd_card_free(card);
+ return err;
+}
+
+static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+ pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_driver driver = {
+ .name = DRIVER_NAME,
+ .id_table = snd_cs5535audio_ids,
+ .probe = snd_cs5535audio_probe,
+ .remove = __devexit_p(snd_cs5535audio_remove),
+};
+
+static int __init alsa_card_cs5535audio_init(void)
+{
+ return pci_module_init(&driver);
+}
+
+static void __exit alsa_card_cs5535audio_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_cs5535audio_init)
+module_exit(alsa_card_cs5535audio_exit)
+
+MODULE_AUTHOR("Jaya Kumar");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("CS5535 Audio");
+MODULE_SUPPORTED_DEVICE("CS5535 Audio");
diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h
new file mode 100644
index 0000000..e28177f
--- /dev/null
+++ b/sound/pci/cs5535audio/cs5535audio.h
@@ -0,0 +1,123 @@
+#ifndef __SOUND_CS5535AUDIO_H
+#define __SOUND_CS5535AUDIO_H
+
+#define cs_writel(cs5535au, reg, val) outl(val, (int) cs5535au->port + reg)
+#define cs_writeb(cs5535au, reg, val) outb(val, (int) cs5535au->port + reg)
+#define cs_readl(cs5535au, reg) inl((unsigned short) (cs5535au->port + reg))
+#define cs_readw(cs5535au, reg) inw((unsigned short) (cs5535au->port + reg))
+#define cs_readb(cs5535au, reg) inb((unsigned short) (cs5535au->port + reg))
+
+#define CS5535AUDIO_MAX_DESCRIPTORS 128
+
+/* acc_codec bar0 reg addrs */
+#define ACC_GPIO_STATUS 0x00
+#define ACC_CODEC_STATUS 0x08
+#define ACC_CODEC_CNTL 0x0C
+#define ACC_IRQ_STATUS 0x12
+#define ACC_BM0_CMD 0x20
+#define ACC_BM1_CMD 0x28
+#define ACC_BM2_CMD 0x30
+#define ACC_BM3_CMD 0x38
+#define ACC_BM4_CMD 0x40
+#define ACC_BM5_CMD 0x48
+#define ACC_BM6_CMD 0x50
+#define ACC_BM7_CMD 0x58
+#define ACC_BM0_PRD 0x24
+#define ACC_BM1_PRD 0x2C
+#define ACC_BM2_PRD 0x34
+#define ACC_BM3_PRD 0x3C
+#define ACC_BM4_PRD 0x44
+#define ACC_BM5_PRD 0x4C
+#define ACC_BM6_PRD 0x54
+#define ACC_BM7_PRD 0x5C
+#define ACC_BM0_STATUS 0x21
+#define ACC_BM1_STATUS 0x29
+#define ACC_BM2_STATUS 0x31
+#define ACC_BM3_STATUS 0x39
+#define ACC_BM4_STATUS 0x41
+#define ACC_BM5_STATUS 0x49
+#define ACC_BM6_STATUS 0x51
+#define ACC_BM7_STATUS 0x59
+#define ACC_BM0_PNTR 0x60
+#define ACC_BM1_PNTR 0x64
+#define ACC_BM2_PNTR 0x68
+#define ACC_BM3_PNTR 0x6C
+#define ACC_BM4_PNTR 0x70
+#define ACC_BM5_PNTR 0x74
+#define ACC_BM6_PNTR 0x78
+#define ACC_BM7_PNTR 0x7C
+/* acc_codec bar0 reg bits */
+/* ACC_IRQ_STATUS */
+#define IRQ_STS 0
+#define WU_IRQ_STS 1
+#define BM0_IRQ_STS 2
+#define BM1_IRQ_STS 3
+#define BM2_IRQ_STS 4
+#define BM3_IRQ_STS 5
+#define BM4_IRQ_STS 6
+#define BM5_IRQ_STS 7
+#define BM6_IRQ_STS 8
+#define BM7_IRQ_STS 9
+/* ACC_BMX_STATUS */
+#define EOP (1<<0)
+#define BM_EOP_ERR (1<<1)
+/* ACC_BMX_CTL */
+#define BM_CTL_EN 0x00000001
+#define BM_CTL_PAUSE 0x00000011
+#define BM_CTL_DIS 0x00000000
+#define BM_CTL_BYTE_ORD_LE 0x00000000
+#define BM_CTL_BYTE_ORD_BE 0x00000100
+/* cs5535 specific ac97 codec register defines */
+#define CMD_MASK 0xFF00FFFF
+#define CMD_NEW 0x00010000
+#define STS_NEW 0x00020000
+#define PRM_RDY_STS 0x00800000
+#define ACC_CODEC_CNTL_WR_CMD (~0x80000000)
+#define ACC_CODEC_CNTL_RD_CMD 0x80000000
+#define PRD_JMP 0x2000
+#define PRD_EOP 0x4000
+#define PRD_EOT 0x8000
+
+typedef struct _snd_cs5535audio cs5535audio_t;
+typedef struct snd_cs5535audio_dma cs5535audio_dma_t;
+typedef struct snd_cs5535audio_dma_ops cs5535audio_dma_ops_t;
+
+enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS };
+struct snd_cs5535audio_dma_ops {
+ int type;
+ void (*enable_dma)(cs5535audio_t *cs5535au);
+ void (*disable_dma)(cs5535audio_t *cs5535au);
+ void (*pause_dma)(cs5535audio_t *cs5535au);
+ void (*setup_prd)(cs5535audio_t *cs5535au, u32 prd_addr);
+ u32 (*read_dma_pntr)(cs5535audio_t *cs5535au);
+};
+
+typedef struct cs5535audio_dma_desc {
+ u32 addr;
+ u16 size;
+ u16 ctlreserved;
+} cs5535audio_dma_desc_t;
+
+struct snd_cs5535audio_dma {
+ const cs5535audio_dma_ops_t *ops;
+ struct snd_dma_buffer desc_buf;
+ snd_pcm_substream_t *substream;
+ unsigned int buf_addr, buf_bytes;
+ unsigned int period_bytes, periods;
+};
+
+struct _snd_cs5535audio {
+ snd_card_t *card;
+ ac97_t *ac97;
+ int irq;
+ struct pci_dev *pci;
+ unsigned long port;
+ spinlock_t reg_lock;
+ snd_pcm_substream_t *playback_substream;
+ snd_pcm_substream_t *capture_substream;
+ cs5535audio_dma_t dmas[NUM_CS5535AUDIO_DMAS];
+};
+
+int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535audio);
+#endif /* __SOUND_CS5535AUDIO_H */
+
diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
new file mode 100644
index 0000000..5802ed9
--- /dev/null
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -0,0 +1,430 @@
+/*
+ * Driver for audio on multifunction CS5535 companion device
+ * Copyright (C) Jaya Kumar
+ *
+ * Based on Jaroslav Kysela and Takashi Iwai's examples.
+ * This work was sponsored by CIS(M) Sdn Bhd.
+ *
+ * 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
+ *
+ * todo: add be fmt support, spdif, pm
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <sound/asoundef.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/ac97_codec.h>
+#include "cs5535audio.h"
+
+static snd_pcm_hardware_t snd_cs5535audio_playback =
+{
+ .info = (
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_SYNC_START
+ ),
+ .formats = (
+ SNDRV_PCM_FMTBIT_S16_LE
+ ),
+ .rates = (
+ SNDRV_PCM_RATE_CONTINUOUS |
+ SNDRV_PCM_RATE_8000_48000
+ ),
+ .rate_min = 4000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = (128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (64*1024 - 16),
+ .periods_min = 1,
+ .periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
+ .fifo_size = 0,
+};
+
+static snd_pcm_hardware_t snd_cs5535audio_capture =
+{
+ .info = (
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_SYNC_START
+ ),
+ .formats = (
+ SNDRV_PCM_FMTBIT_S16_LE
+ ),
+ .rates = (
+ SNDRV_PCM_RATE_CONTINUOUS |
+ SNDRV_PCM_RATE_8000_48000
+ ),
+ .rate_min = 4000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = (128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (64*1024 - 16),
+ .periods_min = 1,
+ .periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
+ .fifo_size = 0,
+};
+
+static int snd_cs5535audio_playback_open(snd_pcm_substream_t *substream)
+{
+ int err;
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ runtime->hw = snd_cs5535audio_playback;
+ cs5535au->playback_substream = substream;
+ runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]);
+ snd_pcm_set_sync(substream);
+ if ((err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+ return err;
+
+ return 0;
+}
+
+static int snd_cs5535audio_playback_close(snd_pcm_substream_t *substream)
+{
+ return 0;
+}
+
+#define CS5535AUDIO_DESC_LIST_SIZE \
+ PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(cs5535audio_dma_desc_t))
+
+static int cs5535audio_build_dma_packets(cs5535audio_t *cs5535au,
+ cs5535audio_dma_t *dma,
+ snd_pcm_substream_t *substream,
+ unsigned int periods,
+ unsigned int period_bytes)
+{
+ unsigned int i;
+ u32 addr, desc_addr, jmpprd_addr;
+ cs5535audio_dma_desc_t *lastdesc;
+
+ if (periods > CS5535AUDIO_MAX_DESCRIPTORS)
+ return -ENOMEM;
+
+ if (dma->desc_buf.area == NULL) {
+ if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(cs5535au->pci),
+ CS5535AUDIO_DESC_LIST_SIZE+1,
+ &dma->desc_buf) < 0)
+ return -ENOMEM;
+ dma->period_bytes = dma->periods = 0;
+ }
+
+ if (dma->periods == periods && dma->period_bytes == period_bytes)
+ return 0;
+
+ /* the u32 cast is okay because in snd*create we succesfully told
+ pci alloc that we're only 32 bit capable so the uppper will be 0 */
+ addr = (u32) substream->runtime->dma_addr;
+ desc_addr = (u32) dma->desc_buf.addr;
+ for (i = 0; i < periods; i++) {
+ cs5535audio_dma_desc_t *desc =
+ &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[i];
+ desc->addr = cpu_to_le32(addr);
+ desc->size = period_bytes;
+ desc->ctlreserved = PRD_EOP;
+ desc_addr += sizeof(cs5535audio_dma_desc_t);
+ addr += period_bytes;
+ }
+ /* we reserved one dummy descriptor at the end to do the PRD jump */
+ lastdesc = &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[periods];
+ lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
+ lastdesc->size = 0;
+ lastdesc->ctlreserved = PRD_JMP;
+ jmpprd_addr = cpu_to_le32(lastdesc->addr +
+ (sizeof(cs5535audio_dma_desc_t)*periods));
+
+ dma->period_bytes = period_bytes;
+ dma->periods = periods;
+ spin_lock_irq(&cs5535au->reg_lock);
+ dma->ops->disable_dma(cs5535au);
+ dma->ops->setup_prd(cs5535au, jmpprd_addr);
+ spin_unlock_irq(&cs5535au->reg_lock);
+ return 0;
+}
+
+static void cs5535audio_playback_enable_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN);
+}
+
+static void cs5535audio_playback_disable_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM0_CMD, 0);
+}
+
+static void cs5535audio_playback_pause_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE);
+}
+
+static void cs5535audio_playback_setup_prd(cs5535audio_t *cs5535au,
+ u32 prd_addr)
+{
+ cs_writel(cs5535au, ACC_BM0_PRD, prd_addr);
+}
+
+static u32 cs5535audio_playback_read_dma_pntr(cs5535audio_t *cs5535au)
+{
+ return cs_readl(cs5535au, ACC_BM0_PNTR);
+}
+
+static void cs5535audio_capture_enable_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN);
+}
+
+static void cs5535audio_capture_disable_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM1_CMD, 0);
+}
+
+static void cs5535audio_capture_pause_dma(cs5535audio_t *cs5535au)
+{
+ cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE);
+}
+
+static void cs5535audio_capture_setup_prd(cs5535audio_t *cs5535au,
+ u32 prd_addr)
+{
+ cs_writel(cs5535au, ACC_BM1_PRD, prd_addr);
+}
+
+static u32 cs5535audio_capture_read_dma_pntr(cs5535audio_t *cs5535au)
+{
+ return cs_readl(cs5535au, ACC_BM1_PNTR);
+}
+
+static void cs5535audio_clear_dma_packets(cs5535audio_t *cs5535au,
+ cs5535audio_dma_t *dma,
+ snd_pcm_substream_t *substream)
+{
+ snd_dma_free_pages(&dma->desc_buf);
+ dma->desc_buf.area = NULL;
+}
+
+static int snd_cs5535audio_hw_params(snd_pcm_substream_t *substream,
+ snd_pcm_hw_params_t *hw_params)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ cs5535audio_dma_t *dma = substream->runtime->private_data;
+ int err;
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+ dma->buf_addr = substream->runtime->dma_addr;
+ dma->buf_bytes = params_buffer_bytes(hw_params);
+
+ err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
+ params_periods(hw_params),
+ params_period_bytes(hw_params));
+ return err;
+}
+
+static int snd_cs5535audio_hw_free(snd_pcm_substream_t *substream)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ cs5535audio_dma_t *dma = substream->runtime->private_data;
+
+ cs5535audio_clear_dma_packets(cs5535au, dma, substream);
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_cs5535audio_playback_prepare(snd_pcm_substream_t *substream)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE,
+ substream->runtime->rate);
+}
+
+static int snd_cs5535audio_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ cs5535audio_dma_t *dma = substream->runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ spin_lock_irq(&cs5535au->reg_lock);
+ dma->ops->pause_dma(cs5535au);
+ spin_unlock_irq(&cs5535au->reg_lock);
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ spin_lock_irq(&cs5535au->reg_lock);
+ dma->ops->enable_dma(cs5535au);
+ spin_unlock_irq(&cs5535au->reg_lock);
+ break;
+ case SNDRV_PCM_TRIGGER_START:
+ spin_lock_irq(&cs5535au->reg_lock);
+ dma->ops->enable_dma(cs5535au);
+ spin_unlock_irq(&cs5535au->reg_lock);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ spin_lock_irq(&cs5535au->reg_lock);
+ dma->ops->disable_dma(cs5535au);
+ spin_unlock_irq(&cs5535au->reg_lock);
+ break;
+ default:
+ snd_printk(KERN_ERR "unhandled trigger\n");
+ return -EINVAL;
+ break;
+ }
+ return 0;
+}
+
+static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(snd_pcm_substream_t
+ *substream)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ u32 curdma;
+ cs5535audio_dma_t *dma;
+
+ dma = substream->runtime->private_data;
+ curdma = dma->ops->read_dma_pntr(cs5535au);
+ if (curdma < dma->buf_addr) {
+ snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n",
+ curdma, dma->buf_addr);
+ return 0;
+ }
+ curdma -= dma->buf_addr;
+ if (curdma >= dma->buf_bytes) {
+ snd_printk(KERN_ERR "diff=%x >= %x buf_bytes.\n",
+ curdma, dma->buf_bytes);
+ return 0;
+ }
+ return bytes_to_frames(substream->runtime, curdma);
+}
+
+static int snd_cs5535audio_capture_open(snd_pcm_substream_t *substream)
+{
+ int err;
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ runtime->hw = snd_cs5535audio_capture;
+ cs5535au->capture_substream = substream;
+ runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]);
+ snd_pcm_set_sync(substream);
+ if ((err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+ return err;
+ return 0;
+}
+
+static int snd_cs5535audio_capture_close(snd_pcm_substream_t *substream)
+{
+ return 0;
+}
+
+static int snd_cs5535audio_capture_prepare(snd_pcm_substream_t *substream)
+{
+ cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
+ return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE,
+ substream->runtime->rate);
+}
+
+static snd_pcm_ops_t snd_cs5535audio_playback_ops = {
+ .open = snd_cs5535audio_playback_open,
+ .close = snd_cs5535audio_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_cs5535audio_hw_params,
+ .hw_free = snd_cs5535audio_hw_free,
+ .prepare = snd_cs5535audio_playback_prepare,
+ .trigger = snd_cs5535audio_trigger,
+ .pointer = snd_cs5535audio_pcm_pointer,
+};
+
+static snd_pcm_ops_t snd_cs5535audio_capture_ops = {
+ .open = snd_cs5535audio_capture_open,
+ .close = snd_cs5535audio_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_cs5535audio_hw_params,
+ .hw_free = snd_cs5535audio_hw_free,
+ .prepare = snd_cs5535audio_capture_prepare,
+ .trigger = snd_cs5535audio_trigger,
+ .pointer = snd_cs5535audio_pcm_pointer,
+};
+
+static void snd_cs5535audio_pcm_free(snd_pcm_t *pcm)
+{
+ snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+static cs5535audio_dma_ops_t snd_cs5535audio_playback_dma_ops = {
+ .type = CS5535AUDIO_DMA_PLAYBACK,
+ .enable_dma = cs5535audio_playback_enable_dma,
+ .disable_dma = cs5535audio_playback_disable_dma,
+ .setup_prd = cs5535audio_playback_setup_prd,
+ .pause_dma = cs5535audio_playback_pause_dma,
+ .read_dma_pntr = cs5535audio_playback_read_dma_pntr,
+};
+
+static cs5535audio_dma_ops_t snd_cs5535audio_capture_dma_ops = {
+ .type = CS5535AUDIO_DMA_CAPTURE,
+ .enable_dma = cs5535audio_capture_enable_dma,
+ .disable_dma = cs5535audio_capture_disable_dma,
+ .setup_prd = cs5535audio_capture_setup_prd,
+ .pause_dma = cs5535audio_capture_pause_dma,
+ .read_dma_pntr = cs5535audio_capture_read_dma_pntr,
+};
+
+int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535au)
+{
+ snd_pcm_t *pcm;
+ int err;
+
+ err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops =
+ &snd_cs5535audio_playback_dma_ops;
+ cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops =
+ &snd_cs5535audio_capture_dma_ops;
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &snd_cs5535audio_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &snd_cs5535audio_capture_ops);
+
+ pcm->private_data = cs5535au;
+ pcm->private_free = snd_cs5535audio_pcm_free;
+ pcm->info_flags = 0;
+ strcpy(pcm->name, "CS5535 Audio");
+
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(cs5535au->pci),
+ 64*1024, 128*1024);
+
+ return 0;
+}
+