Merge branch 'origin' into devel-stable

Conflicts:
	arch/arm/mach-mx2/devices.c
	arch/arm/mach-mx2/devices.h
	sound/soc/pxa/pxa-ssp.c

1 files changed, 251 insertions, 0 deletions

diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c
new file mode 100644
index 000000000000..25f19e4728bf
--- /dev/null
+++ b/sound/soc/omap/omap-mcpdm.c
@@ -0,0 +1,251 @@
+/*
+ * omap-mcpdm.c  --  OMAP ALSA SoC DAI driver using McPDM port
+ *
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * Author: Misael Lopez Cruz <x0052729@ti.com>
+ * Contact: Jorge Eduardo Candelaria <x0107209@ti.com>
+ *          Margarita Olaya <magi.olaya@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <plat/control.h>
+#include <plat/dma.h>
+#include <plat/mcbsp.h>
+#include "mcpdm.h"
+#include "omap-mcpdm.h"
+#include "omap-pcm.h"
+
+struct omap_mcpdm_data {
+        struct omap_mcpdm_link *links;
+        int active;
+};
+
+static struct omap_mcpdm_link omap_mcpdm_links[] = {
+        /* downlink */
+        {
+                .irq_mask = MCPDM_DN_IRQ_EMPTY | MCPDM_DN_IRQ_FULL,
+                .threshold = 1,
+                .format = PDMOUTFORMAT_LJUST,
+        },
+        /* uplink */
+        {
+                .irq_mask = MCPDM_UP_IRQ_EMPTY | MCPDM_UP_IRQ_FULL,
+                .threshold = 1,
+                .format = PDMOUTFORMAT_LJUST,
+        },
+};
+
+static struct omap_mcpdm_data mcpdm_data = {
+        .links = omap_mcpdm_links,
+        .active = 0,
+};
+
+/*
+ * Stream DMA parameters
+ */
+static struct omap_pcm_dma_data omap_mcpdm_dai_dma_params[] = {
+        {
+                .name = "Audio playback",
+                .dma_req = OMAP44XX_DMA_MCPDM_DL,
+                .data_type = OMAP_DMA_DATA_TYPE_S32,
+                .sync_mode = OMAP_DMA_SYNC_PACKET,
+                .packet_size = 16,
+                .port_addr = OMAP44XX_MCPDM_L3_BASE + MCPDM_DN_DATA,
+        },
+        {
+                .name = "Audio capture",
+                .dma_req = OMAP44XX_DMA_MCPDM_UP,
+                .data_type = OMAP_DMA_DATA_TYPE_S32,
+                .sync_mode = OMAP_DMA_SYNC_PACKET,
+                .packet_size = 16,
+                .port_addr = OMAP44XX_MCPDM_L3_BASE + MCPDM_UP_DATA,
+        },
+};
+
+static int omap_mcpdm_dai_startup(struct snd_pcm_substream *substream,
+                                  struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+        int err = 0;
+
+        if (!cpu_dai->active)
+                err = omap_mcpdm_request();
+
+        return err;
+}
+
+static void omap_mcpdm_dai_shutdown(struct snd_pcm_substream *substream,
+                                    struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+        if (!cpu_dai->active)
+                omap_mcpdm_free();
+}
+
+static int omap_mcpdm_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+                                  struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+        struct omap_mcpdm_data *mcpdm_priv = cpu_dai->private_data;
+        int stream = substream->stream;
+        int err = 0;
+
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+        case SNDRV_PCM_TRIGGER_RESUME:
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+                if (!mcpdm_priv->active++)
+                        omap_mcpdm_start(stream);
+                break;
+
+        case SNDRV_PCM_TRIGGER_STOP:
+        case SNDRV_PCM_TRIGGER_SUSPEND:
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+                if (!--mcpdm_priv->active)
+                        omap_mcpdm_stop(stream);
+                break;
+        default:
+                err = -EINVAL;
+        }
+
+        return err;
+}
+
+static int omap_mcpdm_dai_hw_params(struct snd_pcm_substream *substream,
+                                    struct snd_pcm_hw_params *params,
+                                    struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+        struct omap_mcpdm_data *mcpdm_priv = cpu_dai->private_data;
+        struct omap_mcpdm_link *mcpdm_links = mcpdm_priv->links;
+        int stream = substream->stream;
+        int channels, err, link_mask = 0;
+
+        cpu_dai->dma_data = &omap_mcpdm_dai_dma_params[stream];
+
+        channels = params_channels(params);
+        switch (channels) {
+        case 4:
+                if (stream == SNDRV_PCM_STREAM_CAPTURE)
+                        /* up to 2 channels for capture */
+                        return -EINVAL;
+                link_mask |= 1 << 3;
+        case 3:
+                if (stream == SNDRV_PCM_STREAM_CAPTURE)
+                        /* up to 2 channels for capture */
+                        return -EINVAL;
+                link_mask |= 1 << 2;
+        case 2:
+                link_mask |= 1 << 1;
+        case 1:
+                link_mask |= 1 << 0;
+                break;
+        default:
+                /* unsupported number of channels */
+                return -EINVAL;
+        }
+
+        if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+                mcpdm_links[stream].channels = link_mask << 3;
+                err = omap_mcpdm_playback_open(&mcpdm_links[stream]);
+        } else {
+                mcpdm_links[stream].channels = link_mask << 0;
+                err = omap_mcpdm_capture_open(&mcpdm_links[stream]);
+        }
+
+        return err;
+}
+
+static int omap_mcpdm_dai_hw_free(struct snd_pcm_substream *substream,
+                                  struct snd_soc_dai *dai)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+        struct omap_mcpdm_data *mcpdm_priv = cpu_dai->private_data;
+        struct omap_mcpdm_link *mcpdm_links = mcpdm_priv->links;
+        int stream = substream->stream;
+        int err;
+
+        if (substream->stream ==  SNDRV_PCM_STREAM_PLAYBACK)
+                err = omap_mcpdm_playback_close(&mcpdm_links[stream]);
+        else
+                err = omap_mcpdm_capture_close(&mcpdm_links[stream]);
+
+        return err;
+}
+
+static struct snd_soc_dai_ops omap_mcpdm_dai_ops = {
+        .startup        = omap_mcpdm_dai_startup,
+        .shutdown       = omap_mcpdm_dai_shutdown,
+        .trigger        = omap_mcpdm_dai_trigger,
+        .hw_params      = omap_mcpdm_dai_hw_params,
+        .hw_free        = omap_mcpdm_dai_hw_free,
+};
+
+#define OMAP_MCPDM_RATES        (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
+#define OMAP_MCPDM_FORMATS      (SNDRV_PCM_FMTBIT_S32_LE)
+
+struct snd_soc_dai omap_mcpdm_dai = {
+        .name = "omap-mcpdm",
+        .id = -1,
+        .playback = {
+                .channels_min = 1,
+                .channels_max = 4,
+                .rates = OMAP_MCPDM_RATES,
+                .formats = OMAP_MCPDM_FORMATS,
+        },
+        .capture = {
+                .channels_min = 1,
+                .channels_max = 2,
+                .rates = OMAP_MCPDM_RATES,
+                .formats = OMAP_MCPDM_FORMATS,
+        },
+        .ops = &omap_mcpdm_dai_ops,
+        .private_data = &mcpdm_data,
+};
+EXPORT_SYMBOL_GPL(omap_mcpdm_dai);
+
+static int __init snd_omap_mcpdm_init(void)
+{
+        return snd_soc_register_dai(&omap_mcpdm_dai);
+}
+module_init(snd_omap_mcpdm_init);
+
+static void __exit snd_omap_mcpdm_exit(void)
+{
+        snd_soc_unregister_dai(&omap_mcpdm_dai);
+}
+module_exit(snd_omap_mcpdm_exit);
+
+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
+MODULE_DESCRIPTION("OMAP PDM SoC Interface");
+MODULE_LICENSE("GPL");