Revert "ARM: OMAP4: Add support for Multichannel Pulse Density Modulation"

This reverts commit a43fecbbd3fbb1028d8af252e7a1e887c407490d.

Signed-off-by: Jorge Eduardo Candelaria <x0107209@ti.com>

6 files changed, 0 insertions, 590 deletions

diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index fa53383309db..89499e67b67c 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -112,13 +112,6 @@ config OMAP_MCBSP
 	  Say Y here if you want support for the OMAP Multichannel
 	  Buffered Serial Port.
 
-config OMAP_MCPDM
-	bool "McPDM support"
-	depends on ARCH_OMAP4
-	default y
-	help
-	  Support for Multichannel Pulse Density modulation in OMAP4
-
 config OMAP_MBOX_FWK
 	tristate "Mailbox framework support"
 	depends on ARCH_OMAP
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 114b0aa3c36d..04a100cfb8e5 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -13,7 +13,6 @@ obj-  :=
 obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
 
 obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
-obj-$(CONFIG_OMAP_MCPDM) += mcpdm.o
 
 obj-$(CONFIG_CPU_FREQ) += cpu-omap.o
 obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index d261fb6b9743..a64b692a1bfe 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -27,7 +27,6 @@
 #include <mach/gpio.h>
 #include <mach/menelaus.h>
 #include <mach/mcbsp.h>
-#include <mach/mcpdm.h>
 #include <mach/dsp_common.h>
 
 #if	defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
@@ -192,32 +191,6 @@ void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 #endif
 
 /*-------------------------------------------------------------------------*/
-#if defined(CONFIG_OMAP_MCPDM)
-
-static struct omap_mcpdm_platform_data mcpdm_pdata = {
-	.phys_base = OMAP44XX_MCPDM_BASE,
-	.irq = INT_44XX_MCPDM_IRQ,
-};
-
-static struct platform_device omap_mcpdm_device = {
-	.name	= "omap-mcpdm",
-	.id	= -1,
-	.dev = {
-		.platform_data = &mcpdm_pdata,
-	},
-
-};
-
-static void omap_init_mcpdm(void)
-{
-	(void) platform_device_register(&omap_mcpdm_device);
-}
-#else
-static inline void omap_init_mcpdm(void) {}
-#endif
-
-
-/*-------------------------------------------------------------------------*/
 
 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 	defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
@@ -411,7 +384,6 @@ static int __init omap_init_devices(void)
 	 */
 	omap_init_dsp();
 	omap_init_kp();
-	omap_init_mcpdm();
 	omap_init_uwire();
 	omap_init_wdt();
 	omap_init_rng();
diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
index 3258970c955e..e8f84a087439 100644
--- a/arch/arm/plat-omap/include/mach/irqs.h
+++ b/arch/arm/plat-omap/include/mach/irqs.h
@@ -512,7 +512,6 @@
 #define INT_44XX_PARTHASH_IRQ	(79 + IRQ_GIC_START)
 #define INT_44XX_MMC3_IRQ	(94 + IRQ_GIC_START)
 
-#define INT_44XX_MCPDM_IRQ	(63 + IRQ_GIC_START)
 
 /* Max. 128 level 2 IRQs (OMAP1610), 192 GPIOs (OMAP730/850) and
  * 16 MPUIO lines */
diff --git a/arch/arm/plat-omap/include/mach/mcpdm.h b/arch/arm/plat-omap/include/mach/mcpdm.h
deleted file mode 100755
index 9fd2dfbf2593..000000000000
--- a/arch/arm/plat-omap/include/mach/mcpdm.h
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * 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
- *
- */
-
-#define OMAP44XX_MCPDM_BASE	0x40132000
-
-/* 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 DN_IRQ			(1 << 0)
-#define DN_IRQ_EMTPY		(1 << 1)
-#define DN_IRQ_ALMST_EMPTY	(1 << 2)
-#define DN_IRQ_FULL		(1 << 3)
-
-#define UP_IRQ			(1 << 8)
-#define UP_IRQ_EMPTY		(1 << 9)
-#define UP_IRQ_ALMST_FULL	(1 << 10)
-#define UP_IRQ_FULL		(1 << 11)
-
-#define DOWNLINK_IRQ_MASK	0x00F
-#define 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;
-};
-
-void omap_mcpdm_reg_dump(void);
-void omap_mcpdm_start(int links);
-void omap_mcpdm_stop(int links);
-int omap_mcpdm_set_uplink(struct omap_mcpdm_link *uplink);
-int omap_mcpdm_set_downlink(struct omap_mcpdm_link *downlink);
-int omap_mcpdm_request(void);
-void omap_mcpdm_free(void);
-int omap_mcpdm_set_offset(int offset1, int offset2);
diff --git a/arch/arm/plat-omap/mcpdm.c b/arch/arm/plat-omap/mcpdm.c
deleted file mode 100755
index 4daf04c7f5b5..000000000000
--- a/arch/arm/plat-omap/mcpdm.c
+++ /dev/null
@@ -1,401 +0,0 @@
-/*
- * mcpdm.c  --  McPDM interface 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
- *
- */
-
-#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 <mach/mcpdm.h>
-
-struct omap_mcpdm *mcpdm;
-
-void omap_mcpdm_write(u16 reg, u32 val)
-{
-	__raw_writel(val, mcpdm->io_base + reg);
-}
-
-int omap_mcpdm_read(u16 reg)
-{
-	return __raw_readl(mcpdm->io_base + reg);
-}
-
-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");
-}
-EXPORT_SYMBOL(omap_mcpdm_reg_dump);
-
-void omap_mcpdm_start(int links)
-{
-	int ctrl = omap_mcpdm_read(MCPDM_CTRL);
-
-	if (links & MCPDM_UPLINK)
-		ctrl &= ~SW_UP_RST;
-
-	if (links & MCPDM_DOWNLINK)
-		ctrl &= ~SW_DN_RST;
-
-	omap_mcpdm_write(MCPDM_CTRL, ctrl);
-}
-EXPORT_SYMBOL(omap_mcpdm_start);
-
-void omap_mcpdm_stop(int links)
-{
-	int ctrl = omap_mcpdm_read(MCPDM_CTRL);
-
-	if (links & MCPDM_UPLINK)
-		ctrl |= SW_UP_RST;
-
-	if (links & MCPDM_DOWNLINK)
-		ctrl |= SW_DN_RST;
-
-	omap_mcpdm_write(MCPDM_CTRL, ctrl);
-}
-EXPORT_SYMBOL(omap_mcpdm_stop);
-
-int omap_mcpdm_get_channels(int links, int channels)
-{
-	int count;
-
-	if (links & MCPDM_UPLINK)
-		channels &= PDM_UP_MASK | PDM_STATUS_MASK;
-
-	if (links & MCPDM_DOWNLINK)
-		channels &= PDM_DN_MASK | PDM_CMD_MASK;
-
-	/* Brian Kernighan's method for counting set bits */
-	for (count = 0; channels; count++)
-		channels &= channels - 1;
-
-	return count;
-}
-
-int omap_mcpdm_set_uplink(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 & 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 |= uplink->format & PDMOUTFORMAT;
-
-	/* Enable uplink channels */
-	ctrl |= uplink->channels & (PDM_UP_MASK | PDM_STATUS_MASK);
-	omap_mcpdm_write(MCPDM_CTRL, ctrl);
-
-	/* Calculate number of uplink channels */
-	mcpdm->up_channels = omap_mcpdm_get_channels(MCPDM_UPLINK,
-					uplink->channels);
-
-	return 0;
-}
-EXPORT_SYMBOL(omap_mcpdm_set_uplink);
-
-int omap_mcpdm_set_downlink(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 & 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);
-
-	/* Configure DMA controller */
-	omap_mcpdm_write(MCPDM_DMAENABLE_SET, DMA_DN_ENABLE);
-
-	/* Set pdm out format */
-	ctrl = omap_mcpdm_read(MCPDM_CTRL);
-	ctrl |= downlink->format & PDMOUTFORMAT;
-
-	/* Enable uplink channels */
-	ctrl |= downlink->channels & (PDM_DN_MASK | PDM_CMD_MASK);
-	omap_mcpdm_write(MCPDM_CTRL, ctrl);
-
-	/* Calculate number of downlink channels  */
-	mcpdm->dn_channels = omap_mcpdm_get_channels(MCPDM_DOWNLINK,
-			downlink->channels);
-
-	return 0;
-}
-EXPORT_SYMBOL(omap_mcpdm_set_downlink);
-
-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);
-	switch (irq_status) {
-	case DN_IRQ_FULL:
-	case DN_IRQ_EMTPY:
-		dev_dbg(mcpdm_irq->dev, "DN FIFO error %x\n", irq_status);
-		omap_mcpdm_stop(MCPDM_DOWNLINK);
-		omap_mcpdm_set_downlink(mcpdm_irq->downlink);
-		omap_mcpdm_start(MCPDM_DOWNLINK);
-		break;
-	case DN_IRQ:
-		dev_dbg(mcpdm_irq->dev, "DN write request\n");
-		break;
-	case UP_IRQ_FULL:
-	case UP_IRQ_EMPTY:
-		dev_dbg(mcpdm_irq->dev, "UP FIFO error %x\n", irq_status);
-		omap_mcpdm_stop(MCPDM_UPLINK);
-		omap_mcpdm_set_uplink(mcpdm_irq->uplink);
-		omap_mcpdm_start(MCPDM_UPLINK);
-		break;
-	case UP_IRQ:
-		dev_dbg(mcpdm_irq->dev, "UP write request\n");
-		break;
-	}
-
-	omap_mcpdm_write(MCPDM_IRQSTATUS, irq_status);
-
-	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);
-		return -EBUSY;
-	}
-	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");
-		return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(omap_mcpdm_request);
-
-void omap_mcpdm_free(void)
-{
-	clk_disable(mcpdm->clk);
-
-	spin_lock(&mcpdm->lock);
-	if (mcpdm->free) {
-		dev_err(mcpdm->dev, "McPDM interface is already free\n");
-		spin_unlock(&mcpdm->lock);
-	}
-	mcpdm->free = 1;
-	spin_unlock(&mcpdm->lock);
-
-	free_irq(mcpdm->irq, (void *)mcpdm);
-}
-EXPORT_SYMBOL(omap_mcpdm_free);
-
-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);
-
-	/* Enable/disable offset cancellation for downlink channel 1 */
-	if (offset1)
-		offset |= DN_OFST_RX1_EN;
-	else
-		offset &= ~DN_OFST_RX1_EN;
-
-	/* Enable/disable offset cancellation for downlink channel 2 */
-	if (offset2)
-		offset |= DN_OFST_RX2_EN;
-	else
-		offset &= ~DN_OFST_RX2_EN;
-
-	omap_mcpdm_write(MCPDM_DN_OFFSET, offset);
-
-	return 0;
-}
-EXPORT_SYMBOL(omap_mcpdm_set_offset);
-
-static int __devinit omap_mcpdm_probe(struct platform_device *pdev)
-{
-	struct omap_mcpdm_platform_data *pdata = pdev->dev.platform_data;
-	int ret = 0;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "McPDM device initialized without "
-					"platform data\n");
-		ret = -EINVAL;
-		goto exit;
-	}
-	dev_dbg(&pdev->dev, "Initializing OMAP McPDM driver \n");
-
-	mcpdm = kzalloc(sizeof(struct omap_mcpdm), GFP_KERNEL);
-	if (!mcpdm) {
-		ret = -ENOMEM;
-		goto exit;
-	}
-
-	spin_lock_init(&mcpdm->lock);
-	mcpdm->free = 1;
-	mcpdm->phys_base = pdata->phys_base;
-	mcpdm->io_base = ioremap(mcpdm->phys_base, SZ_4K);
-	if (!mcpdm->io_base) {
-		ret = -ENOMEM;
-		goto err_ioremap;
-	}
-
-	mcpdm->irq = pdata->irq;
-
-	mcpdm->clk = clk_get(&pdev->dev, "fclk");
-	if (IS_ERR(mcpdm->clk)) {
-		ret = PTR_ERR(mcpdm->clk);
-		dev_err(&pdev->dev, "unable to get fclk: %d\n", ret);
-		goto err_clk;
-	}
-
-	mcpdm->pdata = pdata;
-	mcpdm->dev = &pdev->dev;
-	platform_set_drvdata(pdev, mcpdm);
-
-	return 0;
-
-err_clk:
-	iounmap(mcpdm->io_base);
-err_ioremap:
-	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);
-
-	if (mcpdm_ptr) {
-		clk_disable(mcpdm_ptr->clk);
-		clk_put(mcpdm_ptr->clk);
-
-		iounmap(mcpdm_ptr->io_base);
-
-		mcpdm_ptr->clk = NULL;
-		mcpdm_ptr->free = 0;
-		mcpdm_ptr->dev = NULL;
-	}
-
-	printk(KERN_INFO "McPDM driver removed\n");
-
-	return 0;
-}
-
-static struct platform_driver omap_mcpdm_driver = {
-	.probe = omap_mcpdm_probe,
-	.remove = omap_mcpdm_remove,
-	.driver = {
-		.name = "omap-mcpdm",
-	},
-};
-
-int __init omap_mcpdm_init(void)
-{
-	printk(KERN_INFO "McPDM driver initialized\n");
-
-	return platform_driver_register(&omap_mcpdm_driver);
-}
-arch_initcall(omap_mcpdm_init);