[PATCH] v4l: 713: add alsa support to saa7134 driver

Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 543 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
new file mode 100644
index 00000000000..d09e01f7fc3
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -0,0 +1,543 @@
+/*
+ *
+ *  Support for audio capture
+ *  PCI function #1 of the saa7134
+ *
+ *  (c) 2005 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
+ *  (c) 2004 Gerd Knorr <kraxel@bytesex.org>
+ *  (c) 2003 Clemens Ladisch <clemens@ladisch.de>
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <asm/delay.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+
+#include "saa7134.h"
+#include "saa7134-reg.h"
+
+#define dprintk(level,fmt, arg...)	if (debug >= level) \
+	printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
+
+
+/****************************************************************************
+	Data type declarations - Can be moded to a header file later
+ ****************************************************************************/
+
+#define ANALOG_CLOCK 1792000
+#define CLOCK_DIV_MIN 4
+#define CLOCK_DIV_MAX 15
+#define MAX_PCM_DEVICES		4
+#define MAX_PCM_SUBSTREAMS	16
+
+enum { DEVICE_DIGITAL, DEVICE_ANALOG };
+
+/* These can be replaced after done */
+#define MIXER_ADDR_LAST MAX_saa7134_INPUT
+
+struct saa7134_audio_dev {
+	struct saa7134_core           *core;
+        struct saa7134_buffer         *buf;
+	struct saa7134_dmaqueue       q;
+
+	/* pci i/o */
+	struct pci_dev             *pci;
+	unsigned char              pci_rev,pci_lat;
+
+	/* audio controls */
+	int                        irq;
+	int                        dig_rate;		/* Digital sampling rate */
+
+	snd_card_t                 *card;
+
+	spinlock_t                 reg_lock;
+
+	unsigned int               dma_size;
+	unsigned int               period_size;
+
+	int                        mixer_volume[MIXER_ADDR_LAST+1][2];
+	int                        capture_source[MIXER_ADDR_LAST+1][2];
+
+	long opened;
+	snd_pcm_substream_t *substream;
+};
+typedef struct saa7134_audio_dev snd_saa7134_card_t;
+
+/****************************************************************************
+			Module global static vars
+ ****************************************************************************/
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
+
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable saa7134x soundcard. default enabled.");
+
+/****************************************************************************
+				Module macros
+ ****************************************************************************/
+
+MODULE_DESCRIPTION("ALSA driver module for saa7134 based TV cards");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@brturbo.com.br>");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Philips, saa7131E},"
+			"{{Philips, saa7134},"
+			"{{Philips, saa7133}");
+static unsigned int debug = 0;
+module_param(debug,int,0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+/****************************************************************************
+			Module specific funtions
+ ****************************************************************************/
+
+/*
+ * BOARD Specific: Sets audio DMA
+ */
+
+int saa7134_start_audio_dma(snd_saa7134_card_t *chip)
+{
+	struct saa7134_core *core = chip->core;
+
+	return 0;
+}
+
+/*
+ * BOARD Specific: Resets audio DMA
+ */
+int saa7134_stop_audio_dma(snd_saa7134_card_t *chip)
+{
+	struct saa7134_core *core=chip->core;
+	return 0;
+}
+
+#define MAX_IRQ_LOOP 10
+
+static void saa713401_timeout(unsigned long data)
+{
+	snd_saa7134_card_t *chip = (snd_saa7134_card_t *)data;
+}
+
+/* FIXME: Wrong values*/
+static char *saa7134_aud_irqs[32] = {
+	"y_risci1", "u_risci1", "v_risci1", "vbi_risc1",
+	"y_risci2", "u_risci2", "v_risci2", "vbi_risc2",
+	"y_oflow",  "u_oflow",  "v_oflow",  "vbi_oflow",
+	"y_sync",   "u_sync",   "v_sync",   "vbi_sync",
+	"opc_err",  "par_err",  "rip_err",  "pci_abort",
+};
+
+
+static void saa713401_aud_irq(snd_saa7134_card_t *chip)
+{
+	struct saa7134_core *core = chip->core;
+}
+
+static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+	snd_saa7134_card_t *chip = dev_id;
+	struct saa7134_core *core = chip->core;
+}
+
+/****************************************************************************
+				ALSA PCM Interface
+ ****************************************************************************/
+
+/*
+ * Digital hardware definition
+ */
+static snd_pcm_hardware_t snd_saa7134_digital_hw = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_MMAP_VALID,
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	.rates = 0, /* set at runtime */
+	.channels_min = 2,
+	.channels_max = 2,
+	.buffer_bytes_max = 255 * 4092,
+	.period_bytes_min = 32,
+	.period_bytes_max = 4092,
+	.periods_min = 2,
+	.periods_max = 255,
+};
+
+/*
+ * Sets board to provide digital audio
+ */
+static int snd_saa7134_set_digital_hw(snd_saa7134_card_t *chip, snd_pcm_runtime_t *runtime)
+{
+	return 0;
+}
+
+/*
+ * audio open callback
+ */
+static int snd_saa7134_pcm_open(snd_pcm_substream_t *substream)
+{
+	snd_saa7134_card_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	int err;
+
+	if (test_and_set_bit(0, &chip->opened))
+		return -EBUSY;
+
+	err = snd_saa7134_set_digital_hw(chip, runtime);
+
+	if (err < 0)
+		goto _error;
+
+	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		goto _error;
+
+	chip->substream = substream;
+	return 0;
+
+_error:
+	clear_bit(0, &chip->opened);
+	smp_mb__after_clear_bit();
+	return err;
+}
+
+/*
+ * audio close callback
+ */
+static int snd_saa7134_close(snd_pcm_substream_t *substream)
+{
+	snd_saa7134_card_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->substream = NULL;
+	clear_bit(0, &chip->opened);
+	smp_mb__after_clear_bit();
+	return 0;
+}
+
+/*
+ * hw_params callback
+ */
+static int snd_saa7134_hw_params(snd_pcm_substream_t * substream,
+				 snd_pcm_hw_params_t * hw_params)
+{
+	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+/*
+ * hw free callback
+ */
+static int snd_saa7134_hw_free(snd_pcm_substream_t * substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+/*
+ * prepare callback
+ */
+static int snd_saa7134_prepare(snd_pcm_substream_t *substream)
+{
+	snd_saa7134_card_t *chip = snd_pcm_substream_chip(substream);
+	return 0;
+}
+
+
+/*
+ * trigger callback
+ */
+static int snd_saa7134_card_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+	snd_saa7134_card_t *chip = snd_pcm_substream_chip(substream);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		return snd_saa7134_start(chip);
+	case SNDRV_PCM_TRIGGER_STOP:
+		return snd_saa7134_stop(chip);
+	default:
+		return -EINVAL;
+	}
+}
+
+/*
+ * pointer callback
+ */
+static snd_pcm_uframes_t snd_saa7134_pointer(snd_pcm_substream_t *substream)
+{
+//	snd_saa7134_card_t *chip = snd_pcm_substream_chip(substream);
+//	snd_pcm_runtime_t *runtime = substream->runtime;
+
+//	return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
+}
+
+/*
+ * operators
+ */
+static snd_pcm_ops_t snd_saa7134_pcm_ops = {
+	.open = snd_saa7134_pcm_open,
+	.close = snd_saa7134_close,
+	.ioctl = snd_pcm_lib_ioctl,
+	.hw_params = snd_saa7134_hw_params,
+	.hw_free = snd_saa7134_hw_free,
+	.prepare = snd_saa7134_prepare,
+	.trigger = snd_saa7134_card_trigger,
+	.pointer = snd_saa7134_pointer,
+	.page = snd_pcm_sgbuf_ops_page,
+};
+
+/*
+ * create a PCM device
+ */
+static int __devinit snd_saa7134_pcm(snd_saa7134_card_t *chip, int device, char *name)
+{
+	int err;
+	snd_pcm_t *pcm;
+
+	err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
+	if (err < 0)
+		return err;
+	pcm->private_data = chip;
+	strcpy(pcm->name, name);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_saa7134_pcm_ops);
+	return snd_pcm_lib_preallocate_pages_for_all(pcm,
+						     SNDRV_DMA_TYPE_DEV_SG,
+						     snd_dma_pci_data(chip->pci),
+							128 * 1024,
+							(255 * 4092 + 1023) & ~1023);
+}
+
+/****************************************************************************
+				CONTROL INTERFACE
+ ****************************************************************************/
+static int snd_saa7134_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
+{
+	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	info->count = 1;
+	info->value.integer.min = 0;
+	info->value.integer.max = 0x3f;
+
+	return 0;
+}
+
+/* OK - TODO: test it */
+static int snd_saa7134_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+	snd_saa7134_card_t *chip = snd_kcontrol_chip(kcontrol);
+	struct saa7134_core *core=chip->core;
+
+	return 0;
+}
+
+/* OK - TODO: test it */
+static int snd_saa7134_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+	snd_saa7134_card_t *chip = snd_kcontrol_chip(kcontrol);
+	struct saa7134_core *core=chip->core;
+
+	return 0;
+}
+
+static snd_kcontrol_new_t snd_saa7134_capture_volume = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Capture Volume",
+	.info = snd_saa7134_capture_volume_info,
+	.get = snd_saa7134_capture_volume_get,
+	.put = snd_saa7134_capture_volume_put,
+};
+
+/*
+ ***************************************
+ */
+
+/****************************************************************************
+			Basic Flow for Sound Devices
+ ****************************************************************************/
+
+/*
+ * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
+ * Only boards with eeprom and byte 1 at eeprom=1 have it
+ */
+
+struct pci_device_id saa7134_audio_pci_tbl[] = {
+	{0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
+	{0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
+	{0, }
+};
+MODULE_DEVICE_TABLE(pci, saa7134_audio_pci_tbl);
+
+/*
+ * Chip-specific destructor
+ */
+
+static int snd_saa7134_free(snd_saa7134_card_t *chip)
+{
+	if (chip->irq >= 0)
+		free_irq(chip->irq, chip);
+
+	/* free memory */
+	saa7134_core_put(chip->core,chip->pci);
+
+	pci_release_regions(chip->pci);
+	pci_disable_device(chip->pci);
+
+	kfree(chip);
+	return 0;
+}
+
+/*
+ * Component Destructor
+ */
+static int snd_saa7134_dev_free(snd_device_t *device)
+{
+	snd_saa7134_card_t *chip = device->device_data;
+	return snd_saa7134_free(chip);
+}
+
+
+/*
+ * Alsa Constructor - Component probe
+ */
+
+static int devno=0;
+static int __devinit snd_saa7134_create(snd_card_t *card, struct pci_dev *pci,
+				    snd_saa7134_card_t **rchip)
+{
+	snd_saa7134_card_t   *chip;
+	struct saa7134_core  *core;
+	return 0;
+}
+
+static int __devinit saa7134_audio_initdev(struct pci_dev *pci,
+				    const struct pci_device_id *pci_id)
+{
+	snd_card_t       *card;
+	snd_saa7134_card_t  *chip;
+	int              err;
+
+	if (devno >= SNDRV_CARDS)
+		return (-ENODEV);
+
+	if (!enable[devno]) {
+		++devno;
+		return (-ENOENT);
+	}
+
+	card = snd_card_new(index[devno], id[devno], THIS_MODULE, 0);
+	if (!card)
+		return (-ENOMEM);
+
+	err = snd_saa7134_create(card, pci, &chip);
+	if (err < 0)
+		return (err);
+
+/*
+	err = snd_saa7134_pcm(chip, DEVICE_DIGITAL, "saa7134 Digital");
+	if (err < 0)
+		goto fail_free;
+*/
+	err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_capture_volume, chip));
+	if (err < 0) {
+		snd_card_free(card);
+		return (err);
+	}
+
+	strcpy (card->driver, "saa7134_ALSA");
+	sprintf(card->shortname, "Saa7134 %x", pci->device);
+	sprintf(card->longname, "%s at %#lx",
+		card->shortname, pci_resource_start(pci, 0));
+	strcpy (card->mixername, "saa7134");
+
+	dprintk (0, "%s/%i: Alsa support for saa7134x boards\n",
+	       card->driver,devno);
+
+	err = snd_card_register(card);
+	if (err < 0) {
+		snd_card_free(card);
+		return (err);
+	}
+
+	pci_set_drvdata(pci,card);
+
+	devno++;
+	return 0;
+}
+/*
+ * ALSA destructor
+ */
+static void __devexit saa7134_audio_finidev(struct pci_dev *pci)
+{
+	snd_card_free(pci_get_drvdata(pci));
+	pci_set_drvdata(pci, NULL);
+
+	devno--;
+}
+
+/*
+ * PCI driver definition
+ */
+
+static struct pci_driver saa7134_audio_pci_driver = {
+        .name     = "saa7134_audio",
+        .id_table = saa7134_audio_pci_tbl,
+        .probe    = saa7134_audio_initdev,
+        .remove   = saa7134_audio_finidev,
+	SND_PCI_PM_CALLBACKS
+};
+
+/****************************************************************************
+				LINUX MODULE INIT
+ ****************************************************************************/
+
+/*
+ * module init
+ */
+static int saa7134_audio_init(void)
+{
+	printk(KERN_INFO "saa7134x alsa driver version %d.%d.%d loaded\n",
+	       (saa7134_VERSION_CODE >> 16) & 0xff,
+	       (saa7134_VERSION_CODE >>  8) & 0xff,
+	        saa7134_VERSION_CODE & 0xff);
+#ifdef SNAPSHOT
+	printk(KERN_INFO "saa7134x: snapshot date %04d-%02d-%02d\n",
+	       SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
+#endif
+	return pci_module_init(&saa7134_audio_pci_driver);
+}
+
+/*
+ * module remove
+ */
+static void saa7134_audio_fini(void)
+{
+	pci_unregister_driver(&saa7134_audio_pci_driver);
+}
+
+module_init(saa7134_audio_init);
+module_exit(saa7134_audio_fini);
+
+/* ----------------------------------------------------------- */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */