Merge with mainline to remove plat-omap/Kconfig conflict

Conflicts:
	arch/arm/plat-omap/Kconfig

11 files changed, 978 insertions, 19 deletions

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 61952aa6cd5a..f11963c21873 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -6,6 +6,9 @@ config SND_OMAP_SOC_MCBSP
         tristate
         select OMAP_MCBSP
 
+config SND_OMAP_SOC_MCPDM
+        tristate
+
 config SND_OMAP_SOC_N810
         tristate "SoC Audio support for Nokia N810"
         depends on SND_OMAP_SOC && MACH_NOKIA_N810 && I2C
@@ -94,12 +97,14 @@ config SND_OMAP_SOC_OMAP3_PANDORA
           Say Y if you want to add support for SoC audio on the OMAP3 Pandora.
 
 config SND_OMAP_SOC_OMAP3_BEAGLE
-        tristate "SoC Audio support for OMAP3 Beagle"
-        depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP3_BEAGLE
+        tristate "SoC Audio support for OMAP3 Beagle and Devkit8000"
+        depends on TWL4030_CORE && SND_OMAP_SOC
+        depends on (MACH_OMAP3_BEAGLE || MACH_DEVKIT8000)
         select SND_OMAP_SOC_MCBSP
         select SND_SOC_TWL4030
         help
-          Say Y if you want to add support for SoC audio on the Beagleboard.
+          Say Y if you want to add support for SoC audio on the Beagleboard or
+          the clone Devkit8000.
 
 config SND_OMAP_SOC_ZOOM2
         tristate "SoC Audio support for Zoom2"
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 19283e5edfbf..0bc00ca14b37 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -1,9 +1,11 @@
 # OMAP Platform Support
 snd-soc-omap-objs := omap-pcm.o
 snd-soc-omap-mcbsp-objs := omap-mcbsp.o
+snd-soc-omap-mcpdm-objs := omap-mcpdm.o mcpdm.o
 
 obj-$(CONFIG_SND_OMAP_SOC) += snd-soc-omap.o
 obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
+obj-$(CONFIG_SND_OMAP_SOC_MCPDM) += snd-soc-omap-mcpdm.o
 
 # OMAP Machine Support
 snd-soc-n810-objs := n810.o
diff --git a/sound/soc/omap/mcpdm.c b/sound/soc/omap/mcpdm.c
new file mode 100644
index 000000000000..ad8df6cfae88
--- /dev/null
+++ b/sound/soc/omap/mcpdm.c
@@ -0,0 +1,484 @@
+/*
+ * mcpdm.c  --  McPDM interface driver
+ *
+ * Author: Jorge Eduardo Candelaria <x0107209@ti.com>
+ * Copyright (C) 2009 - Texas Instruments, Inc.
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/wait.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include "mcpdm.h"
+
+static struct omap_mcpdm *mcpdm;
+
+static inline void omap_mcpdm_write(u16 reg, u32 val)
+{
+       __raw_writel(val, mcpdm->io_base + reg);
+}
+
+static inline int omap_mcpdm_read(u16 reg)
+{
+       return __raw_readl(mcpdm->io_base + reg);
+}
+
+static void omap_mcpdm_reg_dump(void)
+{
+       dev_dbg(mcpdm->dev, "***********************\n");
+       dev_dbg(mcpdm->dev, "IRQSTATUS_RAW:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQSTATUS_RAW));
+       dev_dbg(mcpdm->dev, "IRQSTATUS:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQSTATUS));
+       dev_dbg(mcpdm->dev, "IRQENABLE_SET:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQENABLE_SET));
+       dev_dbg(mcpdm->dev, "IRQENABLE_CLR:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQENABLE_CLR));
+       dev_dbg(mcpdm->dev, "IRQWAKE_EN: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_IRQWAKE_EN));
+       dev_dbg(mcpdm->dev, "DMAENABLE_SET: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAENABLE_SET));
+       dev_dbg(mcpdm->dev, "DMAENABLE_CLR:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAENABLE_CLR));
+       dev_dbg(mcpdm->dev, "DMAWAKEEN:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DMAWAKEEN));
+       dev_dbg(mcpdm->dev, "CTRL:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_CTRL));
+       dev_dbg(mcpdm->dev, "DN_DATA:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DN_DATA));
+       dev_dbg(mcpdm->dev, "UP_DATA: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_UP_DATA));
+       dev_dbg(mcpdm->dev, "FIFO_CTRL_DN: 0x%04x\n",
+                       omap_mcpdm_read(MCPDM_FIFO_CTRL_DN));
+       dev_dbg(mcpdm->dev, "FIFO_CTRL_UP:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_FIFO_CTRL_UP));
+       dev_dbg(mcpdm->dev, "DN_OFFSET:  0x%04x\n",
+                       omap_mcpdm_read(MCPDM_DN_OFFSET));
+       dev_dbg(mcpdm->dev, "***********************\n");
+}
+
+/*
+ * Takes the McPDM module in and out of reset state.
+ * Uplink and downlink can be reset individually.
+ */
+static void omap_mcpdm_reset_capture(int reset)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (reset)
+               ctrl |= SW_UP_RST;
+       else
+               ctrl &= ~SW_UP_RST;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+static void omap_mcpdm_reset_playback(int reset)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (reset)
+               ctrl |= SW_DN_RST;
+       else
+               ctrl &= ~SW_DN_RST;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Enables the transfer through the PDM interface to/from the Phoenix
+ * codec by enabling the corresponding UP or DN channels.
+ */
+void omap_mcpdm_start(int stream)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (stream)
+               ctrl |= mcpdm->up_channels;
+       else
+               ctrl |= mcpdm->dn_channels;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Disables the transfer through the PDM interface to/from the Phoenix
+ * codec by disabling the corresponding UP or DN channels.
+ */
+void omap_mcpdm_stop(int stream)
+{
+       int ctrl = omap_mcpdm_read(MCPDM_CTRL);
+
+       if (stream)
+               ctrl &= ~mcpdm->up_channels;
+       else
+               ctrl &= ~mcpdm->dn_channels;
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+}
+
+/*
+ * Configures McPDM uplink for audio recording.
+ * This function should be called before omap_mcpdm_start.
+ */
+int omap_mcpdm_capture_open(struct omap_mcpdm_link *uplink)
+{
+       int irq_mask = 0;
+       int ctrl;
+
+       if (!uplink)
+               return -EINVAL;
+
+       mcpdm->uplink = uplink;
+
+       /* Enable irq request generation */
+       irq_mask |= uplink->irq_mask & MCPDM_UPLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_SET, irq_mask);
+
+       /* Configure uplink threshold */
+       if (uplink->threshold > UP_THRES_MAX)
+               uplink->threshold = UP_THRES_MAX;
+
+       omap_mcpdm_write(MCPDM_FIFO_CTRL_UP, uplink->threshold);
+
+       /* Configure DMA controller */
+       omap_mcpdm_write(MCPDM_DMAENABLE_SET, DMA_UP_ENABLE);
+
+       /* Set pdm out format */
+       ctrl = omap_mcpdm_read(MCPDM_CTRL);
+       ctrl &= ~PDMOUTFORMAT;
+       ctrl |= uplink->format & PDMOUTFORMAT;
+
+       /* Uplink channels */
+       mcpdm->up_channels = uplink->channels & (PDM_UP_MASK | PDM_STATUS_MASK);
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+
+       return 0;
+}
+
+/*
+ * Configures McPDM downlink for audio playback.
+ * This function should be called before omap_mcpdm_start.
+ */
+int omap_mcpdm_playback_open(struct omap_mcpdm_link *downlink)
+{
+       int irq_mask = 0;
+       int ctrl;
+
+       if (!downlink)
+               return -EINVAL;
+
+       mcpdm->downlink = downlink;
+
+       /* Enable irq request generation */
+       irq_mask |= downlink->irq_mask & MCPDM_DOWNLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_SET, irq_mask);
+
+       /* Configure uplink threshold */
+       if (downlink->threshold > DN_THRES_MAX)
+               downlink->threshold = DN_THRES_MAX;
+
+       omap_mcpdm_write(MCPDM_FIFO_CTRL_DN, downlink->threshold);
+
+       /* Enable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_SET, DMA_DN_ENABLE);
+
+       /* Set pdm out format */
+       ctrl = omap_mcpdm_read(MCPDM_CTRL);
+       ctrl &= ~PDMOUTFORMAT;
+       ctrl |= downlink->format & PDMOUTFORMAT;
+
+       /* Downlink channels */
+       mcpdm->dn_channels = downlink->channels & (PDM_DN_MASK | PDM_CMD_MASK);
+
+       omap_mcpdm_write(MCPDM_CTRL, ctrl);
+
+       return 0;
+}
+
+/*
+ * Cleans McPDM uplink configuration.
+ * This function should be called when the stream is closed.
+ */
+int omap_mcpdm_capture_close(struct omap_mcpdm_link *uplink)
+{
+       int irq_mask = 0;
+
+       if (!uplink)
+               return -EINVAL;
+
+       /* Disable irq request generation */
+       irq_mask |= uplink->irq_mask & MCPDM_UPLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_CLR, irq_mask);
+
+       /* Disable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_CLR, DMA_UP_ENABLE);
+
+       /* Clear Downlink channels */
+       mcpdm->up_channels = 0;
+
+       mcpdm->uplink = NULL;
+
+       return 0;
+}
+
+/*
+ * Cleans McPDM downlink configuration.
+ * This function should be called when the stream is closed.
+ */
+int omap_mcpdm_playback_close(struct omap_mcpdm_link *downlink)
+{
+       int irq_mask = 0;
+
+       if (!downlink)
+               return -EINVAL;
+
+       /* Disable irq request generation */
+       irq_mask |= downlink->irq_mask & MCPDM_DOWNLINK_IRQ_MASK;
+       omap_mcpdm_write(MCPDM_IRQENABLE_CLR, irq_mask);
+
+       /* Disable DMA request generation */
+       omap_mcpdm_write(MCPDM_DMAENABLE_CLR, DMA_DN_ENABLE);
+
+       /* clear Downlink channels */
+       mcpdm->dn_channels = 0;
+
+       mcpdm->downlink = NULL;
+
+       return 0;
+}
+
+static irqreturn_t omap_mcpdm_irq_handler(int irq, void *dev_id)
+{
+       struct omap_mcpdm *mcpdm_irq = dev_id;
+       int irq_status;
+
+       irq_status = omap_mcpdm_read(MCPDM_IRQSTATUS);
+
+       /* Acknowledge irq event */
+       omap_mcpdm_write(MCPDM_IRQSTATUS, irq_status);
+
+       if (irq & MCPDM_DN_IRQ_FULL) {
+               dev_err(mcpdm_irq->dev, "DN FIFO error %x\n", irq_status);
+               omap_mcpdm_reset_playback(1);
+               omap_mcpdm_playback_open(mcpdm_irq->downlink);
+               omap_mcpdm_reset_playback(0);
+       }
+
+       if (irq & MCPDM_DN_IRQ_EMPTY) {
+               dev_err(mcpdm_irq->dev, "DN FIFO error %x\n", irq_status);
+               omap_mcpdm_reset_playback(1);
+               omap_mcpdm_playback_open(mcpdm_irq->downlink);
+               omap_mcpdm_reset_playback(0);
+       }
+
+       if (irq & MCPDM_DN_IRQ) {
+               dev_dbg(mcpdm_irq->dev, "DN write request\n");
+       }
+
+       if (irq & MCPDM_UP_IRQ_FULL) {
+               dev_err(mcpdm_irq->dev, "UP FIFO error %x\n", irq_status);
+               omap_mcpdm_reset_capture(1);
+               omap_mcpdm_capture_open(mcpdm_irq->uplink);
+               omap_mcpdm_reset_capture(0);
+       }
+
+       if (irq & MCPDM_UP_IRQ_EMPTY) {
+               dev_err(mcpdm_irq->dev, "UP FIFO error %x\n", irq_status);
+               omap_mcpdm_reset_capture(1);
+               omap_mcpdm_capture_open(mcpdm_irq->uplink);
+               omap_mcpdm_reset_capture(0);
+       }
+
+       if (irq & MCPDM_UP_IRQ) {
+               dev_dbg(mcpdm_irq->dev, "UP write request\n");
+       }
+
+       return IRQ_HANDLED;
+}
+
+int omap_mcpdm_request(void)
+{
+       int ret;
+
+       clk_enable(mcpdm->clk);
+
+       spin_lock(&mcpdm->lock);
+
+       if (!mcpdm->free) {
+               dev_err(mcpdm->dev, "McPDM interface is in use\n");
+               spin_unlock(&mcpdm->lock);
+               ret = -EBUSY;
+               goto err;
+       }
+       mcpdm->free = 0;
+
+       spin_unlock(&mcpdm->lock);
+
+       /* Disable lines while request is ongoing */
+       omap_mcpdm_write(MCPDM_CTRL, 0x00);
+
+       ret = request_irq(mcpdm->irq, omap_mcpdm_irq_handler,
+                               0, "McPDM", (void *)mcpdm);
+       if (ret) {
+               dev_err(mcpdm->dev, "Request for McPDM IRQ failed\n");
+               goto err;
+       }
+
+       return 0;
+
+err:
+       clk_disable(mcpdm->clk);
+       return ret;
+}
+
+void omap_mcpdm_free(void)
+{
+       spin_lock(&mcpdm->lock);
+       if (mcpdm->free) {
+               dev_err(mcpdm->dev, "McPDM interface is already free\n");
+               spin_unlock(&mcpdm->lock);
+               return;
+       }
+       mcpdm->free = 1;
+       spin_unlock(&mcpdm->lock);
+
+       clk_disable(mcpdm->clk);
+
+       free_irq(mcpdm->irq, (void *)mcpdm);
+}
+
+/* Enable/disable DC offset cancelation for the analog
+ * headset path (PDM channels 1 and 2).
+ */
+int omap_mcpdm_set_offset(int offset1, int offset2)
+{
+       int offset;
+
+       if ((offset1 > DN_OFST_MAX) || (offset2 > DN_OFST_MAX))
+               return -EINVAL;
+
+       offset = (offset1 << DN_OFST_RX1) | (offset2 << DN_OFST_RX2);
+
+       /* offset cancellation for channel 1 */
+       if (offset1)
+               offset |= DN_OFST_RX1_EN;
+       else
+               offset &= ~DN_OFST_RX1_EN;
+
+       /* offset cancellation for channel 2 */
+       if (offset2)
+               offset |= DN_OFST_RX2_EN;
+       else
+               offset &= ~DN_OFST_RX2_EN;
+
+       omap_mcpdm_write(MCPDM_DN_OFFSET, offset);
+
+       return 0;
+}
+
+static int __devinit omap_mcpdm_probe(struct platform_device *pdev)
+{
+       struct resource *res;
+       int ret = 0;
+
+       mcpdm = kzalloc(sizeof(struct omap_mcpdm), GFP_KERNEL);
+       if (!mcpdm) {
+               ret = -ENOMEM;
+               goto exit;
+       }
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (res == NULL) {
+               dev_err(&pdev->dev, "no resource\n");
+               goto err_resource;
+       }
+
+       spin_lock_init(&mcpdm->lock);
+       mcpdm->free = 1;
+       mcpdm->io_base = ioremap(res->start, resource_size(res));
+       if (!mcpdm->io_base) {
+               ret = -ENOMEM;
+               goto err_resource;
+       }
+
+       mcpdm->irq = platform_get_irq(pdev, 0);
+
+       mcpdm->clk = clk_get(&pdev->dev, "pdm_ck");
+       if (IS_ERR(mcpdm->clk)) {
+               ret = PTR_ERR(mcpdm->clk);
+               dev_err(&pdev->dev, "unable to get pdm_ck: %d\n", ret);
+               goto err_clk;
+       }
+
+       mcpdm->dev = &pdev->dev;
+       platform_set_drvdata(pdev, mcpdm);
+
+       return 0;
+
+err_clk:
+       iounmap(mcpdm->io_base);
+err_resource:
+       kfree(mcpdm);
+exit:
+       return ret;
+}
+
+static int __devexit omap_mcpdm_remove(struct platform_device *pdev)
+{
+       struct omap_mcpdm *mcpdm_ptr = platform_get_drvdata(pdev);
+
+       platform_set_drvdata(pdev, NULL);
+
+       clk_put(mcpdm_ptr->clk);
+
+       iounmap(mcpdm_ptr->io_base);
+
+       mcpdm_ptr->clk = NULL;
+       mcpdm_ptr->free = 0;
+       mcpdm_ptr->dev = NULL;
+
+       kfree(mcpdm_ptr);
+
+       return 0;
+}
+
+static struct platform_driver omap_mcpdm_driver = {
+       .probe = omap_mcpdm_probe,
+       .remove = __devexit_p(omap_mcpdm_remove),
+       .driver = {
+               .name = "omap-mcpdm",
+       },
+};
+
+static struct platform_device *omap_mcpdm_device;
+
+static int __init omap_mcpdm_init(void)
+{
+       return platform_driver_register(&omap_mcpdm_driver);
+}
+arch_initcall(omap_mcpdm_init);
diff --git a/sound/soc/omap/mcpdm.h b/sound/soc/omap/mcpdm.h
new file mode 100644
index 000000000000..7bb326ef0886
--- /dev/null
+++ b/sound/soc/omap/mcpdm.h
@@ -0,0 +1,151 @@
+/*
+ * mcpdm.h -- Defines for McPDM driver
+ *
+ * Author: Jorge Eduardo Candelaria <x0107209@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
+ *
+ */
+
+/* McPDM registers */
+
+#define MCPDM_REVISION         0x00
+#define MCPDM_SYSCONFIG                0x10
+#define MCPDM_IRQSTATUS_RAW    0x24
+#define MCPDM_IRQSTATUS                0x28
+#define MCPDM_IRQENABLE_SET    0x2C
+#define MCPDM_IRQENABLE_CLR    0x30
+#define MCPDM_IRQWAKE_EN       0x34
+#define MCPDM_DMAENABLE_SET    0x38
+#define MCPDM_DMAENABLE_CLR    0x3C
+#define MCPDM_DMAWAKEEN                0x40
+#define MCPDM_CTRL             0x44
+#define MCPDM_DN_DATA          0x48
+#define MCPDM_UP_DATA          0x4C
+#define MCPDM_FIFO_CTRL_DN     0x50
+#define MCPDM_FIFO_CTRL_UP     0x54
+#define MCPDM_DN_OFFSET                0x58
+
+/*
+ * MCPDM_IRQ bit fields
+ * IRQSTATUS_RAW, IRQSTATUS, IRQENABLE_SET, IRQENABLE_CLR
+ */
+
+#define MCPDM_DN_IRQ                   (1 << 0)
+#define MCPDM_DN_IRQ_EMPTY             (1 << 1)
+#define MCPDM_DN_IRQ_ALMST_EMPTY       (1 << 2)
+#define MCPDM_DN_IRQ_FULL              (1 << 3)
+
+#define MCPDM_UP_IRQ                   (1 << 8)
+#define MCPDM_UP_IRQ_EMPTY             (1 << 9)
+#define MCPDM_UP_IRQ_ALMST_FULL                (1 << 10)
+#define MCPDM_UP_IRQ_FULL              (1 << 11)
+
+#define MCPDM_DOWNLINK_IRQ_MASK                0x00F
+#define MCPDM_UPLINK_IRQ_MASK          0xF00
+
+/*
+ * MCPDM_DMAENABLE bit fields
+ */
+
+#define DMA_DN_ENABLE          0x1
+#define DMA_UP_ENABLE          0x2
+
+/*
+ * MCPDM_CTRL bit fields
+ */
+
+#define PDM_UP1_EN             0x0001
+#define PDM_UP2_EN             0x0002
+#define PDM_UP3_EN             0x0004
+#define PDM_DN1_EN             0x0008
+#define PDM_DN2_EN             0x0010
+#define PDM_DN3_EN             0x0020
+#define PDM_DN4_EN             0x0040
+#define PDM_DN5_EN             0x0080
+#define PDMOUTFORMAT           0x0100
+#define CMD_INT                        0x0200
+#define STATUS_INT             0x0400
+#define SW_UP_RST              0x0800
+#define SW_DN_RST              0x1000
+#define PDM_UP_MASK            0x007
+#define PDM_DN_MASK            0x0F8
+#define PDM_CMD_MASK           0x200
+#define PDM_STATUS_MASK                0x400
+
+
+#define PDMOUTFORMAT_LJUST     (0 << 8)
+#define PDMOUTFORMAT_RJUST     (1 << 8)
+
+/*
+ * MCPDM_FIFO_CTRL bit fields
+ */
+
+#define UP_THRES_MAX           0xF
+#define DN_THRES_MAX           0xF
+
+/*
+ * MCPDM_DN_OFFSET bit fields
+ */
+
+#define DN_OFST_RX1_EN         0x0001
+#define DN_OFST_RX2_EN         0x0100
+
+#define DN_OFST_RX1            1
+#define DN_OFST_RX2            9
+#define DN_OFST_MAX            0x1F
+
+#define MCPDM_UPLINK           1
+#define MCPDM_DOWNLINK         2
+
+struct omap_mcpdm_link {
+       int irq_mask;
+       int threshold;
+       int format;
+       int channels;
+};
+
+struct omap_mcpdm_platform_data {
+       unsigned long phys_base;
+       u16 irq;
+};
+
+struct omap_mcpdm {
+       struct device *dev;
+       unsigned long phys_base;
+       void __iomem *io_base;
+       u8 free;
+       int irq;
+
+       spinlock_t lock;
+       struct omap_mcpdm_platform_data *pdata;
+       struct clk *clk;
+       struct omap_mcpdm_link *downlink;
+       struct omap_mcpdm_link *uplink;
+       struct completion irq_completion;
+
+       int dn_channels;
+       int up_channels;
+};
+
+extern void omap_mcpdm_start(int stream);
+extern void omap_mcpdm_stop(int stream);
+extern int omap_mcpdm_capture_open(struct omap_mcpdm_link *uplink);
+extern int omap_mcpdm_playback_open(struct omap_mcpdm_link *downlink);
+extern int omap_mcpdm_capture_close(struct omap_mcpdm_link *uplink);
+extern int omap_mcpdm_playback_close(struct omap_mcpdm_link *downlink);
+extern int omap_mcpdm_request(void);
+extern void omap_mcpdm_free(void);
+extern int omap_mcpdm_set_offset(int offset1, int offset2);
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 8da14f537f49..e814a9591f78 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -295,6 +295,8 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
         omap_mcbsp_dai_dma_params[id][substream->stream].dma_req = dma;
         omap_mcbsp_dai_dma_params[id][substream->stream].port_addr = port;
         omap_mcbsp_dai_dma_params[id][substream->stream].sync_mode = sync_mode;
+        omap_mcbsp_dai_dma_params[id][substream->stream].data_type =
+                                                        OMAP_DMA_DATA_TYPE_S16;
         cpu_dai->dma_data = &omap_mcbsp_dai_dma_params[id][substream->stream];
 
         if (mcbsp_data->configured) {
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");
diff --git a/sound/soc/omap/omap-mcpdm.h b/sound/soc/omap/omap-mcpdm.h
new file mode 100644
index 000000000000..73b80d559345
--- /dev/null
+++ b/sound/soc/omap/omap-mcpdm.h
@@ -0,0 +1,29 @@
+/*
+ * omap-mcpdm.h
+ *
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * Contact: Misael Lopez Cruz <x0052729@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
+ *
+ */
+
+#ifndef __OMAP_MCPDM_H__
+#define __OMAP_MCPDM_H__
+
+extern struct snd_soc_dai omap_mcpdm_dai;
+
+#endif  /* End of __OMAP_MCPDM_H__ */
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 9db2770e9640..825db385f01f 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -37,7 +37,8 @@ static const struct snd_pcm_hardware omap_pcm_hardware = {
                                   SNDRV_PCM_INFO_INTERLEAVED |
                                   SNDRV_PCM_INFO_PAUSE |
                                   SNDRV_PCM_INFO_RESUME,
-        .formats                = SNDRV_PCM_FMTBIT_S16_LE,
+        .formats                = SNDRV_PCM_FMTBIT_S16_LE |
+                                  SNDRV_PCM_FMTBIT_S32_LE,
         .period_bytes_min       = 32,
         .period_bytes_max       = 64 * 1024,
         .periods_min            = 2,
@@ -149,6 +150,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
         struct omap_runtime_data *prtd = runtime->private_data;
         struct omap_pcm_dma_data *dma_data = prtd->dma_data;
         struct omap_dma_channel_params dma_params;
+        int bytes;
 
         /* return if this is a bufferless transfer e.g.
          * codec <--> BT codec or GSM modem -- lg FIXME */
@@ -156,11 +158,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
                 return 0;
 
         memset(&dma_params, 0, sizeof(dma_params));
-        /*
-         * Note: Regardless of interface data formats supported by OMAP McBSP
-         * or EAC blocks, internal representation is always fixed 16-bit/sample
-         */
-        dma_params.data_type                    = OMAP_DMA_DATA_TYPE_S16;
+        dma_params.data_type                    = dma_data->data_type;
         dma_params.trigger                      = dma_data->dma_req;
         dma_params.sync_mode                    = dma_data->sync_mode;
         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
@@ -170,6 +168,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
                 dma_params.src_start            = runtime->dma_addr;
                 dma_params.dst_start            = dma_data->port_addr;
                 dma_params.dst_port             = OMAP_DMA_PORT_MPUI;
+                dma_params.dst_fi               = dma_data->packet_size;
         } else {
                 dma_params.src_amode            = OMAP_DMA_AMODE_CONSTANT;
                 dma_params.dst_amode            = OMAP_DMA_AMODE_POST_INC;
@@ -177,6 +176,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
                 dma_params.src_start            = dma_data->port_addr;
                 dma_params.dst_start            = runtime->dma_addr;
                 dma_params.src_port             = OMAP_DMA_PORT_MPUI;
+                dma_params.src_fi               = dma_data->packet_size;
         }
         /*
          * Set DMA transfer frame size equal to ALSA period size and frame
@@ -184,7 +184,8 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
          * we can transfer the whole ALSA buffer with single DMA transfer but
          * still can get an interrupt at each period bounary
          */
-        dma_params.elem_count   = snd_pcm_lib_period_bytes(substream) / 2;
+        bytes = snd_pcm_lib_period_bytes(substream);
+        dma_params.elem_count   = bytes >> dma_data->data_type;
         dma_params.frame_count  = runtime->periods;
         omap_set_dma_params(prtd->dma_ch, &dma_params);
 
diff --git a/sound/soc/omap/omap-pcm.h b/sound/soc/omap/omap-pcm.h
index 38a821dd4118..b19975d26907 100644
--- a/sound/soc/omap/omap-pcm.h
+++ b/sound/soc/omap/omap-pcm.h
@@ -29,8 +29,10 @@ struct omap_pcm_dma_data {
         char            *name;          /* stream identifier */
         int             dma_req;        /* DMA request line */
         unsigned long   port_addr;      /* transmit/receive register */
-        int             sync_mode;      /* DMA sync mode */
         void (*set_threshold)(struct snd_pcm_substream *substream);
+        int             data_type;      /* data type 8,16,32 */
+        int             sync_mode;      /* DMA sync mode */
+        int             packet_size;    /* packet size only in PACKET mode */
 };
 
 extern struct snd_soc_platform omap_soc_platform;
diff --git a/sound/soc/omap/omap3beagle.c b/sound/soc/omap/omap3beagle.c
index d88ad5ca526c..240e0975dd6a 100644
--- a/sound/soc/omap/omap3beagle.c
+++ b/sound/soc/omap/omap3beagle.c
@@ -117,11 +117,11 @@ static int __init omap3beagle_soc_init(void)
 {
         int ret;
 
-        if (!machine_is_omap3_beagle()) {
-                pr_debug("Not OMAP3 Beagle!\n");
+        if (!(machine_is_omap3_beagle() || machine_is_devkit8000())) {
+                pr_debug("Not OMAP3 Beagle or Devkit8000!\n");
                 return -ENODEV;
         }
-        pr_info("OMAP3 Beagle SoC init\n");
+        pr_info("OMAP3 Beagle/Devkit8000 SoC init\n");
 
         omap3beagle_snd_device = platform_device_alloc("soc-audio", -1);
         if (!omap3beagle_snd_device) {
diff --git a/sound/soc/omap/omap3pandora.c b/sound/soc/omap/omap3pandora.c
index 68980c19a3bc..de10f76baded 100644
--- a/sound/soc/omap/omap3pandora.c
+++ b/sound/soc/omap/omap3pandora.c
@@ -23,6 +23,7 @@
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <linux/delay.h>
+#include <linux/regulator/consumer.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -40,6 +41,8 @@
 
 #define PREFIX "ASoC omap3pandora: "
 
+static struct regulator *omap3pandora_dac_reg;
+
 static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream,
         struct snd_pcm_hw_params *params, unsigned int fmt)
 {
@@ -106,21 +109,37 @@ static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
                                           SND_SOC_DAIFMT_CBS_CFS);
 }
 
-static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
+static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
         struct snd_kcontrol *k, int event)
 {
+        /*
+         * The PCM1773 DAC datasheet requires 1ms delay between switching
+         * VCC power on/off and /PD pin high/low
+         */
         if (SND_SOC_DAPM_EVENT_ON(event)) {
+                regulator_enable(omap3pandora_dac_reg);
+                mdelay(1);
                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
-                gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
         } else {
-                gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
-                mdelay(1);
                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
+                mdelay(1);
+                regulator_disable(omap3pandora_dac_reg);
         }
 
         return 0;
 }
 
+static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
+        struct snd_kcontrol *k, int event)
+{
+        if (SND_SOC_DAPM_EVENT_ON(event))
+                gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
+        else
+                gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
+
+        return 0;
+}
+
 /*
  * Audio paths on Pandora board:
  *
@@ -130,7 +149,9 @@ static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
  *  |P| <--- TWL4030 <--------- Line In and MICs
  */
 static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
-        SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
+        SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
+                           0, 0, omap3pandora_dac_event,
+                           SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
         SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
                            0, 0, NULL, 0, omap3pandora_hp_event,
                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
@@ -306,8 +327,18 @@ static int __init omap3pandora_soc_init(void)
                 goto fail2;
         }
 
+        omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
+        if (IS_ERR(omap3pandora_dac_reg)) {
+                pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
+                        dev_name(&omap3pandora_snd_device->dev),
+                        PTR_ERR(omap3pandora_dac_reg));
+                goto fail3;
+        }
+
         return 0;
 
+fail3:
+        platform_device_del(omap3pandora_snd_device);
 fail2:
         platform_device_put(omap3pandora_snd_device);
 fail1:
@@ -320,6 +351,7 @@ module_init(omap3pandora_soc_init);
 
 static void __exit omap3pandora_soc_exit(void)
 {
+        regulator_put(omap3pandora_dac_reg);
         platform_device_unregister(omap3pandora_snd_device);
         gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
         gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);