ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/media/pci/cobalt/cobalt-alsa-main.c b/marvell/linux/drivers/media/pci/cobalt/cobalt-alsa-main.c
new file mode 100644
index 0000000..c57f87a
--- /dev/null
+++ b/marvell/linux/drivers/media/pci/cobalt/cobalt-alsa-main.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ALSA interface to cobalt PCM capture streams
+ *
+ * Copyright 2014-2015 Cisco Systems, Inc. and/or its affiliates.
+ * All rights reserved.
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
+
+#include <media/v4l2-device.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+
+#include "cobalt-driver.h"
+#include "cobalt-alsa.h"
+#include "cobalt-alsa-pcm.h"
+
+static void snd_cobalt_card_free(struct snd_cobalt_card *cobsc)
+{
+ if (cobsc == NULL)
+ return;
+
+ cobsc->s->alsa = NULL;
+
+ kfree(cobsc);
+}
+
+static void snd_cobalt_card_private_free(struct snd_card *sc)
+{
+ if (sc == NULL)
+ return;
+ snd_cobalt_card_free(sc->private_data);
+ sc->private_data = NULL;
+ sc->private_free = NULL;
+}
+
+static int snd_cobalt_card_create(struct cobalt_stream *s,
+ struct snd_card *sc,
+ struct snd_cobalt_card **cobsc)
+{
+ *cobsc = kzalloc(sizeof(struct snd_cobalt_card), GFP_KERNEL);
+ if (*cobsc == NULL)
+ return -ENOMEM;
+
+ (*cobsc)->s = s;
+ (*cobsc)->sc = sc;
+
+ sc->private_data = *cobsc;
+ sc->private_free = snd_cobalt_card_private_free;
+
+ return 0;
+}
+
+static int snd_cobalt_card_set_names(struct snd_cobalt_card *cobsc)
+{
+ struct cobalt_stream *s = cobsc->s;
+ struct cobalt *cobalt = s->cobalt;
+ struct snd_card *sc = cobsc->sc;
+
+ /* sc->driver is used by alsa-lib's configurator: simple, unique */
+ strscpy(sc->driver, "cobalt", sizeof(sc->driver));
+
+ /* sc->shortname is a symlink in /proc/asound: COBALT-M -> cardN */
+ snprintf(sc->shortname, sizeof(sc->shortname), "cobalt-%d-%d",
+ cobalt->instance, s->video_channel);
+
+ /* sc->longname is read from /proc/asound/cards */
+ snprintf(sc->longname, sizeof(sc->longname),
+ "Cobalt %d HDMI %d",
+ cobalt->instance, s->video_channel);
+
+ return 0;
+}
+
+int cobalt_alsa_init(struct cobalt_stream *s)
+{
+ struct cobalt *cobalt = s->cobalt;
+ struct snd_card *sc = NULL;
+ struct snd_cobalt_card *cobsc;
+ int ret;
+
+ /* Numbrs steps from "Writing an ALSA Driver" by Takashi Iwai */
+
+ /* (1) Check and increment the device index */
+ /* This is a no-op for us. We'll use the cobalt->instance */
+
+ /* (2) Create a card instance */
+ ret = snd_card_new(&cobalt->pci_dev->dev, SNDRV_DEFAULT_IDX1,
+ SNDRV_DEFAULT_STR1, THIS_MODULE, 0, &sc);
+ if (ret) {
+ cobalt_err("snd_card_new() failed with err %d\n", ret);
+ goto err_exit;
+ }
+
+ /* (3) Create a main component */
+ ret = snd_cobalt_card_create(s, sc, &cobsc);
+ if (ret) {
+ cobalt_err("snd_cobalt_card_create() failed with err %d\n",
+ ret);
+ goto err_exit_free;
+ }
+
+ /* (4) Set the driver ID and name strings */
+ snd_cobalt_card_set_names(cobsc);
+
+ ret = snd_cobalt_pcm_create(cobsc);
+ if (ret) {
+ cobalt_err("snd_cobalt_pcm_create() failed with err %d\n",
+ ret);
+ goto err_exit_free;
+ }
+ /* FIXME - proc files */
+
+ /* (7) Set the driver data and return 0 */
+ /* We do this out of normal order for PCI drivers to avoid races */
+ s->alsa = cobsc;
+
+ /* (6) Register the card instance */
+ ret = snd_card_register(sc);
+ if (ret) {
+ s->alsa = NULL;
+ cobalt_err("snd_card_register() failed with err %d\n", ret);
+ goto err_exit_free;
+ }
+
+ return 0;
+
+err_exit_free:
+ if (sc != NULL)
+ snd_card_free(sc);
+ kfree(cobsc);
+err_exit:
+ return ret;
+}
+
+void cobalt_alsa_exit(struct cobalt_stream *s)
+{
+ struct snd_cobalt_card *cobsc = s->alsa;
+
+ if (cobsc)
+ snd_card_free(cobsc->sc);
+ s->alsa = NULL;
+}