[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>
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
new file mode 100644
index 0000000..d09e01f
--- /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:
+ */