[media] rename drivers/media/video as .../platform

The remaining drivers are mostly platform drivers. Name the
dir to reflect it.

It makes sense to latter break it into a few other dirs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 2241 deletions

diff --git a/drivers/media/video/omap3isp/isp.c b/drivers/media/video/omap3isp/isp.c
deleted file mode 100644
index e0096e07dbdc..000000000000
--- a/drivers/media/video/omap3isp/isp.c
+++ /dev/null
@@ -1,2241 +0,0 @@
-/*
- * isp.c
- *
- * TI OMAP3 ISP - Core
- *
- * Copyright (C) 2006-2010 Nokia Corporation
- * Copyright (C) 2007-2009 Texas Instruments, Inc.
- *
- * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	     Sakari Ailus <sakari.ailus@iki.fi>
- *
- * Contributors:
- *	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	Sakari Ailus <sakari.ailus@iki.fi>
- *	David Cohen <dacohen@gmail.com>
- *	Stanimir Varbanov <svarbanov@mm-sol.com>
- *	Vimarsh Zutshi <vimarsh.zutshi@gmail.com>
- *	Tuukka Toivonen <tuukkat76@gmail.com>
- *	Sergio Aguirre <saaguirre@ti.com>
- *	Antti Koskipaa <akoskipa@gmail.com>
- *	Ivan T. Ivanov <iivanov@mm-sol.com>
- *	RaniSuneela <r-m@ti.com>
- *	Atanas Filipov <afilipov@mm-sol.com>
- *	Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
- *	Hiroshi DOYU <hiroshi.doyu@nokia.com>
- *	Nayden Kanchev <nkanchev@mm-sol.com>
- *	Phil Carmody <ext-phil.2.carmody@nokia.com>
- *	Artem Bityutskiy <artem.bityutskiy@nokia.com>
- *	Dominic Curran <dcurran@ti.com>
- *	Ilkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
- *	Pallavi Kulkarni <p-kulkarni@ti.com>
- *	Vaibhav Hiremath <hvaibhav@ti.com>
- *	Mohit Jalori <mjalori@ti.com>
- *	Sameer Venkatraman <sameerv@ti.com>
- *	Senthilvadivu Guruswamy <svadivu@ti.com>
- *	Thara Gopinath <thara@ti.com>
- *	Toni Leinonen <toni.leinonen@nokia.com>
- *	Troy Laramy <t-laramy@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 <asm/cacheflush.h>
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/vmalloc.h>
-
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-
-#include "isp.h"
-#include "ispreg.h"
-#include "ispccdc.h"
-#include "isppreview.h"
-#include "ispresizer.h"
-#include "ispcsi2.h"
-#include "ispccp2.h"
-#include "isph3a.h"
-#include "isphist.h"
-
-static unsigned int autoidle;
-module_param(autoidle, int, 0444);
-MODULE_PARM_DESC(autoidle, "Enable OMAP3ISP AUTOIDLE support");
-
-static void isp_save_ctx(struct isp_device *isp);
-
-static void isp_restore_ctx(struct isp_device *isp);
-
-static const struct isp_res_mapping isp_res_maps[] = {
-	{
-		.isp_rev = ISP_REVISION_2_0,
-		.map = 1 << OMAP3_ISP_IOMEM_MAIN |
-		       1 << OMAP3_ISP_IOMEM_CCP2 |
-		       1 << OMAP3_ISP_IOMEM_CCDC |
-		       1 << OMAP3_ISP_IOMEM_HIST |
-		       1 << OMAP3_ISP_IOMEM_H3A |
-		       1 << OMAP3_ISP_IOMEM_PREV |
-		       1 << OMAP3_ISP_IOMEM_RESZ |
-		       1 << OMAP3_ISP_IOMEM_SBL |
-		       1 << OMAP3_ISP_IOMEM_CSI2A_REGS1 |
-		       1 << OMAP3_ISP_IOMEM_CSIPHY2,
-	},
-	{
-		.isp_rev = ISP_REVISION_15_0,
-		.map = 1 << OMAP3_ISP_IOMEM_MAIN |
-		       1 << OMAP3_ISP_IOMEM_CCP2 |
-		       1 << OMAP3_ISP_IOMEM_CCDC |
-		       1 << OMAP3_ISP_IOMEM_HIST |
-		       1 << OMAP3_ISP_IOMEM_H3A |
-		       1 << OMAP3_ISP_IOMEM_PREV |
-		       1 << OMAP3_ISP_IOMEM_RESZ |
-		       1 << OMAP3_ISP_IOMEM_SBL |
-		       1 << OMAP3_ISP_IOMEM_CSI2A_REGS1 |
-		       1 << OMAP3_ISP_IOMEM_CSIPHY2 |
-		       1 << OMAP3_ISP_IOMEM_CSI2A_REGS2 |
-		       1 << OMAP3_ISP_IOMEM_CSI2C_REGS1 |
-		       1 << OMAP3_ISP_IOMEM_CSIPHY1 |
-		       1 << OMAP3_ISP_IOMEM_CSI2C_REGS2,
-	},
-};
-
-/* Structure for saving/restoring ISP module registers */
-static struct isp_reg isp_reg_list[] = {
-	{OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG, 0},
-	{OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, 0},
-	{OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL, 0},
-	{0, ISP_TOK_TERM, 0}
-};
-
-/*
- * omap3isp_flush - Post pending L3 bus writes by doing a register readback
- * @isp: OMAP3 ISP device
- *
- * In order to force posting of pending writes, we need to write and
- * readback the same register, in this case the revision register.
- *
- * See this link for reference:
- *   http://www.mail-archive.com/linux-omap@vger.kernel.org/msg08149.html
- */
-void omap3isp_flush(struct isp_device *isp)
-{
-	isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION);
-	isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION);
-}
-
-/*
- * isp_enable_interrupts - Enable ISP interrupts.
- * @isp: OMAP3 ISP device
- */
-static void isp_enable_interrupts(struct isp_device *isp)
-{
-	static const u32 irq = IRQ0ENABLE_CSIA_IRQ
-			     | IRQ0ENABLE_CSIB_IRQ
-			     | IRQ0ENABLE_CCDC_LSC_PREF_ERR_IRQ
-			     | IRQ0ENABLE_CCDC_LSC_DONE_IRQ
-			     | IRQ0ENABLE_CCDC_VD0_IRQ
-			     | IRQ0ENABLE_CCDC_VD1_IRQ
-			     | IRQ0ENABLE_HS_VS_IRQ
-			     | IRQ0ENABLE_HIST_DONE_IRQ
-			     | IRQ0ENABLE_H3A_AWB_DONE_IRQ
-			     | IRQ0ENABLE_H3A_AF_DONE_IRQ
-			     | IRQ0ENABLE_PRV_DONE_IRQ
-			     | IRQ0ENABLE_RSZ_DONE_IRQ;
-
-	isp_reg_writel(isp, irq, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
-	isp_reg_writel(isp, irq, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE);
-}
-
-/*
- * isp_disable_interrupts - Disable ISP interrupts.
- * @isp: OMAP3 ISP device
- */
-static void isp_disable_interrupts(struct isp_device *isp)
-{
-	isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE);
-}
-
-/**
- * isp_set_xclk - Configures the specified cam_xclk to the desired frequency.
- * @isp: OMAP3 ISP device
- * @xclk: Desired frequency of the clock in Hz. 0 = stable low, 1 is stable high
- * @xclksel: XCLK to configure (0 = A, 1 = B).
- *
- * Configures the specified MCLK divisor in the ISP timing control register
- * (TCTRL_CTRL) to generate the desired xclk clock value.
- *
- * Divisor = cam_mclk_hz / xclk
- *
- * Returns the final frequency that is actually being generated
- **/
-static u32 isp_set_xclk(struct isp_device *isp, u32 xclk, u8 xclksel)
-{
-	u32 divisor;
-	u32 currentxclk;
-	unsigned long mclk_hz;
-
-	if (!omap3isp_get(isp))
-		return 0;
-
-	mclk_hz = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]);
-
-	if (xclk >= mclk_hz) {
-		divisor = ISPTCTRL_CTRL_DIV_BYPASS;
-		currentxclk = mclk_hz;
-	} else if (xclk >= 2) {
-		divisor = mclk_hz / xclk;
-		if (divisor >= ISPTCTRL_CTRL_DIV_BYPASS)
-			divisor = ISPTCTRL_CTRL_DIV_BYPASS - 1;
-		currentxclk = mclk_hz / divisor;
-	} else {
-		divisor = xclk;
-		currentxclk = 0;
-	}
-
-	switch (xclksel) {
-	case ISP_XCLK_A:
-		isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL,
-				ISPTCTRL_CTRL_DIVA_MASK,
-				divisor << ISPTCTRL_CTRL_DIVA_SHIFT);
-		dev_dbg(isp->dev, "isp_set_xclk(): cam_xclka set to %d Hz\n",
-			currentxclk);
-		break;
-	case ISP_XCLK_B:
-		isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL,
-				ISPTCTRL_CTRL_DIVB_MASK,
-				divisor << ISPTCTRL_CTRL_DIVB_SHIFT);
-		dev_dbg(isp->dev, "isp_set_xclk(): cam_xclkb set to %d Hz\n",
-			currentxclk);
-		break;
-	case ISP_XCLK_NONE:
-	default:
-		omap3isp_put(isp);
-		dev_dbg(isp->dev, "ISP_ERR: isp_set_xclk(): Invalid requested "
-			"xclk. Must be 0 (A) or 1 (B).\n");
-		return -EINVAL;
-	}
-
-	/* Do we go from stable whatever to clock? */
-	if (divisor >= 2 && isp->xclk_divisor[xclksel - 1] < 2)
-		omap3isp_get(isp);
-	/* Stopping the clock. */
-	else if (divisor < 2 && isp->xclk_divisor[xclksel - 1] >= 2)
-		omap3isp_put(isp);
-
-	isp->xclk_divisor[xclksel - 1] = divisor;
-
-	omap3isp_put(isp);
-
-	return currentxclk;
-}
-
-/*
- * isp_core_init - ISP core settings
- * @isp: OMAP3 ISP device
- * @idle: Consider idle state.
- *
- * Set the power settings for the ISP and SBL bus and cConfigure the HS/VS
- * interrupt source.
- *
- * We need to configure the HS/VS interrupt source before interrupts get
- * enabled, as the sensor might be free-running and the ISP default setting
- * (HS edge) would put an unnecessary burden on the CPU.
- */
-static void isp_core_init(struct isp_device *isp, int idle)
-{
-	isp_reg_writel(isp,
-		       ((idle ? ISP_SYSCONFIG_MIDLEMODE_SMARTSTANDBY :
-				ISP_SYSCONFIG_MIDLEMODE_FORCESTANDBY) <<
-			ISP_SYSCONFIG_MIDLEMODE_SHIFT) |
-			((isp->revision == ISP_REVISION_15_0) ?
-			  ISP_SYSCONFIG_AUTOIDLE : 0),
-		       OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG);
-
-	isp_reg_writel(isp,
-		       (isp->autoidle ? ISPCTRL_SBL_AUTOIDLE : 0) |
-		       ISPCTRL_SYNC_DETECT_VSRISE,
-		       OMAP3_ISP_IOMEM_MAIN, ISP_CTRL);
-}
-
-/*
- * Configure the bridge and lane shifter. Valid inputs are
- *
- * CCDC_INPUT_PARALLEL: Parallel interface
- * CCDC_INPUT_CSI2A: CSI2a receiver
- * CCDC_INPUT_CCP2B: CCP2b receiver
- * CCDC_INPUT_CSI2C: CSI2c receiver
- *
- * The bridge and lane shifter are configured according to the selected input
- * and the ISP platform data.
- */
-void omap3isp_configure_bridge(struct isp_device *isp,
-			       enum ccdc_input_entity input,
-			       const struct isp_parallel_platform_data *pdata,
-			       unsigned int shift, unsigned int bridge)
-{
-	u32 ispctrl_val;
-
-	ispctrl_val  = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL);
-	ispctrl_val &= ~ISPCTRL_SHIFT_MASK;
-	ispctrl_val &= ~ISPCTRL_PAR_CLK_POL_INV;
-	ispctrl_val &= ~ISPCTRL_PAR_SER_CLK_SEL_MASK;
-	ispctrl_val &= ~ISPCTRL_PAR_BRIDGE_MASK;
-	ispctrl_val |= bridge;
-
-	switch (input) {
-	case CCDC_INPUT_PARALLEL:
-		ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_PARALLEL;
-		ispctrl_val |= pdata->clk_pol << ISPCTRL_PAR_CLK_POL_SHIFT;
-		shift += pdata->data_lane_shift * 2;
-		break;
-
-	case CCDC_INPUT_CSI2A:
-		ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIA;
-		break;
-
-	case CCDC_INPUT_CCP2B:
-		ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIB;
-		break;
-
-	case CCDC_INPUT_CSI2C:
-		ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIC;
-		break;
-
-	default:
-		return;
-	}
-
-	ispctrl_val |= ((shift/2) << ISPCTRL_SHIFT_SHIFT) & ISPCTRL_SHIFT_MASK;
-
-	isp_reg_writel(isp, ispctrl_val, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL);
-}
-
-void omap3isp_hist_dma_done(struct isp_device *isp)
-{
-	if (omap3isp_ccdc_busy(&isp->isp_ccdc) ||
-	    omap3isp_stat_pcr_busy(&isp->isp_hist)) {
-		/* Histogram cannot be enabled in this frame anymore */
-		atomic_set(&isp->isp_hist.buf_err, 1);
-		dev_dbg(isp->dev, "hist: Out of synchronization with "
-				  "CCDC. Ignoring next buffer.\n");
-	}
-}
-
-static inline void isp_isr_dbg(struct isp_device *isp, u32 irqstatus)
-{
-	static const char *name[] = {
-		"CSIA_IRQ",
-		"res1",
-		"res2",
-		"CSIB_LCM_IRQ",
-		"CSIB_IRQ",
-		"res5",
-		"res6",
-		"res7",
-		"CCDC_VD0_IRQ",
-		"CCDC_VD1_IRQ",
-		"CCDC_VD2_IRQ",
-		"CCDC_ERR_IRQ",
-		"H3A_AF_DONE_IRQ",
-		"H3A_AWB_DONE_IRQ",
-		"res14",
-		"res15",
-		"HIST_DONE_IRQ",
-		"CCDC_LSC_DONE",
-		"CCDC_LSC_PREFETCH_COMPLETED",
-		"CCDC_LSC_PREFETCH_ERROR",
-		"PRV_DONE_IRQ",
-		"CBUFF_IRQ",
-		"res22",
-		"res23",
-		"RSZ_DONE_IRQ",
-		"OVF_IRQ",
-		"res26",
-		"res27",
-		"MMU_ERR_IRQ",
-		"OCP_ERR_IRQ",
-		"SEC_ERR_IRQ",
-		"HS_VS_IRQ",
-	};
-	int i;
-
-	dev_dbg(isp->dev, "ISP IRQ: ");
-
-	for (i = 0; i < ARRAY_SIZE(name); i++) {
-		if ((1 << i) & irqstatus)
-			printk(KERN_CONT "%s ", name[i]);
-	}
-	printk(KERN_CONT "\n");
-}
-
-static void isp_isr_sbl(struct isp_device *isp)
-{
-	struct device *dev = isp->dev;
-	struct isp_pipeline *pipe;
-	u32 sbl_pcr;
-
-	/*
-	 * Handle shared buffer logic overflows for video buffers.
-	 * ISPSBL_PCR_CCDCPRV_2_RSZ_OVF can be safely ignored.
-	 */
-	sbl_pcr = isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_PCR);
-	isp_reg_writel(isp, sbl_pcr, OMAP3_ISP_IOMEM_SBL, ISPSBL_PCR);
-	sbl_pcr &= ~ISPSBL_PCR_CCDCPRV_2_RSZ_OVF;
-
-	if (sbl_pcr)
-		dev_dbg(dev, "SBL overflow (PCR = 0x%08x)\n", sbl_pcr);
-
-	if (sbl_pcr & ISPSBL_PCR_CSIB_WBL_OVF) {
-		pipe = to_isp_pipeline(&isp->isp_ccp2.subdev.entity);
-		if (pipe != NULL)
-			pipe->error = true;
-	}
-
-	if (sbl_pcr & ISPSBL_PCR_CSIA_WBL_OVF) {
-		pipe = to_isp_pipeline(&isp->isp_csi2a.subdev.entity);
-		if (pipe != NULL)
-			pipe->error = true;
-	}
-
-	if (sbl_pcr & ISPSBL_PCR_CCDC_WBL_OVF) {
-		pipe = to_isp_pipeline(&isp->isp_ccdc.subdev.entity);
-		if (pipe != NULL)
-			pipe->error = true;
-	}
-
-	if (sbl_pcr & ISPSBL_PCR_PRV_WBL_OVF) {
-		pipe = to_isp_pipeline(&isp->isp_prev.subdev.entity);
-		if (pipe != NULL)
-			pipe->error = true;
-	}
-
-	if (sbl_pcr & (ISPSBL_PCR_RSZ1_WBL_OVF
-		       | ISPSBL_PCR_RSZ2_WBL_OVF
-		       | ISPSBL_PCR_RSZ3_WBL_OVF
-		       | ISPSBL_PCR_RSZ4_WBL_OVF)) {
-		pipe = to_isp_pipeline(&isp->isp_res.subdev.entity);
-		if (pipe != NULL)
-			pipe->error = true;
-	}
-
-	if (sbl_pcr & ISPSBL_PCR_H3A_AF_WBL_OVF)
-		omap3isp_stat_sbl_overflow(&isp->isp_af);
-
-	if (sbl_pcr & ISPSBL_PCR_H3A_AEAWB_WBL_OVF)
-		omap3isp_stat_sbl_overflow(&isp->isp_aewb);
-}
-
-/*
- * isp_isr - Interrupt Service Routine for Camera ISP module.
- * @irq: Not used currently.
- * @_isp: Pointer to the OMAP3 ISP device
- *
- * Handles the corresponding callback if plugged in.
- *
- * Returns IRQ_HANDLED when IRQ was correctly handled, or IRQ_NONE when the
- * IRQ wasn't handled.
- */
-static irqreturn_t isp_isr(int irq, void *_isp)
-{
-	static const u32 ccdc_events = IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ |
-				       IRQ0STATUS_CCDC_LSC_DONE_IRQ |
-				       IRQ0STATUS_CCDC_VD0_IRQ |
-				       IRQ0STATUS_CCDC_VD1_IRQ |
-				       IRQ0STATUS_HS_VS_IRQ;
-	struct isp_device *isp = _isp;
-	u32 irqstatus;
-
-	irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
-	isp_reg_writel(isp, irqstatus, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
-
-	isp_isr_sbl(isp);
-
-	if (irqstatus & IRQ0STATUS_CSIA_IRQ)
-		omap3isp_csi2_isr(&isp->isp_csi2a);
-
-	if (irqstatus & IRQ0STATUS_CSIB_IRQ)
-		omap3isp_ccp2_isr(&isp->isp_ccp2);
-
-	if (irqstatus & IRQ0STATUS_CCDC_VD0_IRQ) {
-		if (isp->isp_ccdc.output & CCDC_OUTPUT_PREVIEW)
-			omap3isp_preview_isr_frame_sync(&isp->isp_prev);
-		if (isp->isp_ccdc.output & CCDC_OUTPUT_RESIZER)
-			omap3isp_resizer_isr_frame_sync(&isp->isp_res);
-		omap3isp_stat_isr_frame_sync(&isp->isp_aewb);
-		omap3isp_stat_isr_frame_sync(&isp->isp_af);
-		omap3isp_stat_isr_frame_sync(&isp->isp_hist);
-	}
-
-	if (irqstatus & ccdc_events)
-		omap3isp_ccdc_isr(&isp->isp_ccdc, irqstatus & ccdc_events);
-
-	if (irqstatus & IRQ0STATUS_PRV_DONE_IRQ) {
-		if (isp->isp_prev.output & PREVIEW_OUTPUT_RESIZER)
-			omap3isp_resizer_isr_frame_sync(&isp->isp_res);
-		omap3isp_preview_isr(&isp->isp_prev);
-	}
-
-	if (irqstatus & IRQ0STATUS_RSZ_DONE_IRQ)
-		omap3isp_resizer_isr(&isp->isp_res);
-
-	if (irqstatus & IRQ0STATUS_H3A_AWB_DONE_IRQ)
-		omap3isp_stat_isr(&isp->isp_aewb);
-
-	if (irqstatus & IRQ0STATUS_H3A_AF_DONE_IRQ)
-		omap3isp_stat_isr(&isp->isp_af);
-
-	if (irqstatus & IRQ0STATUS_HIST_DONE_IRQ)
-		omap3isp_stat_isr(&isp->isp_hist);
-
-	omap3isp_flush(isp);
-
-#if defined(DEBUG) && defined(ISP_ISR_DEBUG)
-	isp_isr_dbg(isp, irqstatus);
-#endif
-
-	return IRQ_HANDLED;
-}
-
-/* -----------------------------------------------------------------------------
- * Pipeline power management
- *
- * Entities must be powered up when part of a pipeline that contains at least
- * one open video device node.
- *
- * To achieve this use the entity use_count field to track the number of users.
- * For entities corresponding to video device nodes the use_count field stores
- * the users count of the node. For entities corresponding to subdevs the
- * use_count field stores the total number of users of all video device nodes
- * in the pipeline.
- *
- * The omap3isp_pipeline_pm_use() function must be called in the open() and
- * close() handlers of video device nodes. It increments or decrements the use
- * count of all subdev entities in the pipeline.
- *
- * To react to link management on powered pipelines, the link setup notification
- * callback updates the use count of all entities in the source and sink sides
- * of the link.
- */
-
-/*
- * isp_pipeline_pm_use_count - Count the number of users of a pipeline
- * @entity: The entity
- *
- * Return the total number of users of all video device nodes in the pipeline.
- */
-static int isp_pipeline_pm_use_count(struct media_entity *entity)
-{
-	struct media_entity_graph graph;
-	int use = 0;
-
-	media_entity_graph_walk_start(&graph, entity);
-
-	while ((entity = media_entity_graph_walk_next(&graph))) {
-		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
-			use += entity->use_count;
-	}
-
-	return use;
-}
-
-/*
- * isp_pipeline_pm_power_one - Apply power change to an entity
- * @entity: The entity
- * @change: Use count change
- *
- * Change the entity use count by @change. If the entity is a subdev update its
- * power state by calling the core::s_power operation when the use count goes
- * from 0 to != 0 or from != 0 to 0.
- *
- * Return 0 on success or a negative error code on failure.
- */
-static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
-{
-	struct v4l2_subdev *subdev;
-	int ret;
-
-	subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
-	       ? media_entity_to_v4l2_subdev(entity) : NULL;
-
-	if (entity->use_count == 0 && change > 0 && subdev != NULL) {
-		ret = v4l2_subdev_call(subdev, core, s_power, 1);
-		if (ret < 0 && ret != -ENOIOCTLCMD)
-			return ret;
-	}
-
-	entity->use_count += change;
-	WARN_ON(entity->use_count < 0);
-
-	if (entity->use_count == 0 && change < 0 && subdev != NULL)
-		v4l2_subdev_call(subdev, core, s_power, 0);
-
-	return 0;
-}
-
-/*
- * isp_pipeline_pm_power - Apply power change to all entities in a pipeline
- * @entity: The entity
- * @change: Use count change
- *
- * Walk the pipeline to update the use count and the power state of all non-node
- * entities.
- *
- * Return 0 on success or a negative error code on failure.
- */
-static int isp_pipeline_pm_power(struct media_entity *entity, int change)
-{
-	struct media_entity_graph graph;
-	struct media_entity *first = entity;
-	int ret = 0;
-
-	if (!change)
-		return 0;
-
-	media_entity_graph_walk_start(&graph, entity);
-
-	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
-			ret = isp_pipeline_pm_power_one(entity, change);
-
-	if (!ret)
-		return 0;
-
-	media_entity_graph_walk_start(&graph, first);
-
-	while ((first = media_entity_graph_walk_next(&graph))
-	       && first != entity)
-		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
-			isp_pipeline_pm_power_one(first, -change);
-
-	return ret;
-}
-
-/*
- * omap3isp_pipeline_pm_use - Update the use count of an entity
- * @entity: The entity
- * @use: Use (1) or stop using (0) the entity
- *
- * Update the use count of all entities in the pipeline and power entities on or
- * off accordingly.
- *
- * Return 0 on success or a negative error code on failure. Powering entities
- * off is assumed to never fail. No failure can occur when the use parameter is
- * set to 0.
- */
-int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
-{
-	int change = use ? 1 : -1;
-	int ret;
-
-	mutex_lock(&entity->parent->graph_mutex);
-
-	/* Apply use count to node. */
-	entity->use_count += change;
-	WARN_ON(entity->use_count < 0);
-
-	/* Apply power change to connected non-nodes. */
-	ret = isp_pipeline_pm_power(entity, change);
-	if (ret < 0)
-		entity->use_count -= change;
-
-	mutex_unlock(&entity->parent->graph_mutex);
-
-	return ret;
-}
-
-/*
- * isp_pipeline_link_notify - Link management notification callback
- * @source: Pad at the start of the link
- * @sink: Pad at the end of the link
- * @flags: New link flags that will be applied
- *
- * React to link management on powered pipelines by updating the use count of
- * all entities in the source and sink sides of the link. Entities are powered
- * on or off accordingly.
- *
- * Return 0 on success or a negative error code on failure. Powering entities
- * off is assumed to never fail. This function will not fail for disconnection
- * events.
- */
-static int isp_pipeline_link_notify(struct media_pad *source,
-				    struct media_pad *sink, u32 flags)
-{
-	int source_use = isp_pipeline_pm_use_count(source->entity);
-	int sink_use = isp_pipeline_pm_use_count(sink->entity);
-	int ret;
-
-	if (!(flags & MEDIA_LNK_FL_ENABLED)) {
-		/* Powering off entities is assumed to never fail. */
-		isp_pipeline_pm_power(source->entity, -sink_use);
-		isp_pipeline_pm_power(sink->entity, -source_use);
-		return 0;
-	}
-
-	ret = isp_pipeline_pm_power(source->entity, sink_use);
-	if (ret < 0)
-		return ret;
-
-	ret = isp_pipeline_pm_power(sink->entity, source_use);
-	if (ret < 0)
-		isp_pipeline_pm_power(source->entity, -sink_use);
-
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * Pipeline stream management
- */
-
-/*
- * isp_pipeline_enable - Enable streaming on a pipeline
- * @pipe: ISP pipeline
- * @mode: Stream mode (single shot or continuous)
- *
- * Walk the entities chain starting at the pipeline output video node and start
- * all modules in the chain in the given mode.
- *
- * Return 0 if successful, or the return value of the failed video::s_stream
- * operation otherwise.
- */
-static int isp_pipeline_enable(struct isp_pipeline *pipe,
-			       enum isp_pipeline_stream_state mode)
-{
-	struct isp_device *isp = pipe->output->isp;
-	struct media_entity *entity;
-	struct media_pad *pad;
-	struct v4l2_subdev *subdev;
-	unsigned long flags;
-	int ret;
-
-	/* If the preview engine crashed it might not respond to read/write
-	 * operations on the L4 bus. This would result in a bus fault and a
-	 * kernel oops. Refuse to start streaming in that case. This check must
-	 * be performed before the loop below to avoid starting entities if the
-	 * pipeline won't start anyway (those entities would then likely fail to
-	 * stop, making the problem worse).
-	 */
-	if ((pipe->entities & isp->crashed) &
-	    (1U << isp->isp_prev.subdev.entity.id))
-		return -EIO;
-
-	spin_lock_irqsave(&pipe->lock, flags);
-	pipe->state &= ~(ISP_PIPELINE_IDLE_INPUT | ISP_PIPELINE_IDLE_OUTPUT);
-	spin_unlock_irqrestore(&pipe->lock, flags);
-
-	pipe->do_propagation = false;
-
-	entity = &pipe->output->video.entity;
-	while (1) {
-		pad = &entity->pads[0];
-		if (!(pad->flags & MEDIA_PAD_FL_SINK))
-			break;
-
-		pad = media_entity_remote_source(pad);
-		if (pad == NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
-			break;
-
-		entity = pad->entity;
-		subdev = media_entity_to_v4l2_subdev(entity);
-
-		ret = v4l2_subdev_call(subdev, video, s_stream, mode);
-		if (ret < 0 && ret != -ENOIOCTLCMD)
-			return ret;
-
-		if (subdev == &isp->isp_ccdc.subdev) {
-			v4l2_subdev_call(&isp->isp_aewb.subdev, video,
-					s_stream, mode);
-			v4l2_subdev_call(&isp->isp_af.subdev, video,
-					s_stream, mode);
-			v4l2_subdev_call(&isp->isp_hist.subdev, video,
-					s_stream, mode);
-			pipe->do_propagation = true;
-		}
-	}
-
-	return 0;
-}
-
-static int isp_pipeline_wait_resizer(struct isp_device *isp)
-{
-	return omap3isp_resizer_busy(&isp->isp_res);
-}
-
-static int isp_pipeline_wait_preview(struct isp_device *isp)
-{
-	return omap3isp_preview_busy(&isp->isp_prev);
-}
-
-static int isp_pipeline_wait_ccdc(struct isp_device *isp)
-{
-	return omap3isp_stat_busy(&isp->isp_af)
-	    || omap3isp_stat_busy(&isp->isp_aewb)
-	    || omap3isp_stat_busy(&isp->isp_hist)
-	    || omap3isp_ccdc_busy(&isp->isp_ccdc);
-}
-
-#define ISP_STOP_TIMEOUT	msecs_to_jiffies(1000)
-
-static int isp_pipeline_wait(struct isp_device *isp,
-			     int(*busy)(struct isp_device *isp))
-{
-	unsigned long timeout = jiffies + ISP_STOP_TIMEOUT;
-
-	while (!time_after(jiffies, timeout)) {
-		if (!busy(isp))
-			return 0;
-	}
-
-	return 1;
-}
-
-/*
- * isp_pipeline_disable - Disable streaming on a pipeline
- * @pipe: ISP pipeline
- *
- * Walk the entities chain starting at the pipeline output video node and stop
- * all modules in the chain. Wait synchronously for the modules to be stopped if
- * necessary.
- *
- * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module
- * can't be stopped (in which case a software reset of the ISP is probably
- * necessary).
- */
-static int isp_pipeline_disable(struct isp_pipeline *pipe)
-{
-	struct isp_device *isp = pipe->output->isp;
-	struct media_entity *entity;
-	struct media_pad *pad;
-	struct v4l2_subdev *subdev;
-	int failure = 0;
-	int ret;
-
-	/*
-	 * We need to stop all the modules after CCDC first or they'll
-	 * never stop since they may not get a full frame from CCDC.
-	 */
-	entity = &pipe->output->video.entity;
-	while (1) {
-		pad = &entity->pads[0];
-		if (!(pad->flags & MEDIA_PAD_FL_SINK))
-			break;
-
-		pad = media_entity_remote_source(pad);
-		if (pad == NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
-			break;
-
-		entity = pad->entity;
-		subdev = media_entity_to_v4l2_subdev(entity);
-
-		if (subdev == &isp->isp_ccdc.subdev) {
-			v4l2_subdev_call(&isp->isp_aewb.subdev,
-					 video, s_stream, 0);
-			v4l2_subdev_call(&isp->isp_af.subdev,
-					 video, s_stream, 0);
-			v4l2_subdev_call(&isp->isp_hist.subdev,
-					 video, s_stream, 0);
-		}
-
-		v4l2_subdev_call(subdev, video, s_stream, 0);
-
-		if (subdev == &isp->isp_res.subdev)
-			ret = isp_pipeline_wait(isp, isp_pipeline_wait_resizer);
-		else if (subdev == &isp->isp_prev.subdev)
-			ret = isp_pipeline_wait(isp, isp_pipeline_wait_preview);
-		else if (subdev == &isp->isp_ccdc.subdev)
-			ret = isp_pipeline_wait(isp, isp_pipeline_wait_ccdc);
-		else
-			ret = 0;
-
-		if (ret) {
-			dev_info(isp->dev, "Unable to stop %s\n", subdev->name);
-			/* If the entity failed to stopped, assume it has
-			 * crashed. Mark it as such, the ISP will be reset when
-			 * applications will release it.
-			 */
-			isp->crashed |= 1U << subdev->entity.id;
-			failure = -ETIMEDOUT;
-		}
-	}
-
-	return failure;
-}
-
-/*
- * omap3isp_pipeline_set_stream - Enable/disable streaming on a pipeline
- * @pipe: ISP pipeline
- * @state: Stream state (stopped, single shot or continuous)
- *
- * Set the pipeline to the given stream state. Pipelines can be started in
- * single-shot or continuous mode.
- *
- * Return 0 if successful, or the return value of the failed video::s_stream
- * operation otherwise. The pipeline state is not updated when the operation
- * fails, except when stopping the pipeline.
- */
-int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
-				 enum isp_pipeline_stream_state state)
-{
-	int ret;
-
-	if (state == ISP_PIPELINE_STREAM_STOPPED)
-		ret = isp_pipeline_disable(pipe);
-	else
-		ret = isp_pipeline_enable(pipe, state);
-
-	if (ret == 0 || state == ISP_PIPELINE_STREAM_STOPPED)
-		pipe->stream_state = state;
-
-	return ret;
-}
-
-/*
- * isp_pipeline_resume - Resume streaming on a pipeline
- * @pipe: ISP pipeline
- *
- * Resume video output and input and re-enable pipeline.
- */
-static void isp_pipeline_resume(struct isp_pipeline *pipe)
-{
-	int singleshot = pipe->stream_state == ISP_PIPELINE_STREAM_SINGLESHOT;
-
-	omap3isp_video_resume(pipe->output, !singleshot);
-	if (singleshot)
-		omap3isp_video_resume(pipe->input, 0);
-	isp_pipeline_enable(pipe, pipe->stream_state);
-}
-
-/*
- * isp_pipeline_suspend - Suspend streaming on a pipeline
- * @pipe: ISP pipeline
- *
- * Suspend pipeline.
- */
-static void isp_pipeline_suspend(struct isp_pipeline *pipe)
-{
-	isp_pipeline_disable(pipe);
-}
-
-/*
- * isp_pipeline_is_last - Verify if entity has an enabled link to the output
- * 			  video node
- * @me: ISP module's media entity
- *
- * Returns 1 if the entity has an enabled link to the output video node or 0
- * otherwise. It's true only while pipeline can have no more than one output
- * node.
- */
-static int isp_pipeline_is_last(struct media_entity *me)
-{
-	struct isp_pipeline *pipe;
-	struct media_pad *pad;
-
-	if (!me->pipe)
-		return 0;
-	pipe = to_isp_pipeline(me);
-	if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED)
-		return 0;
-	pad = media_entity_remote_source(&pipe->output->pad);
-	return pad->entity == me;
-}
-
-/*
- * isp_suspend_module_pipeline - Suspend pipeline to which belongs the module
- * @me: ISP module's media entity
- *
- * Suspend the whole pipeline if module's entity has an enabled link to the
- * output video node. It works only while pipeline can have no more than one
- * output node.
- */
-static void isp_suspend_module_pipeline(struct media_entity *me)
-{
-	if (isp_pipeline_is_last(me))
-		isp_pipeline_suspend(to_isp_pipeline(me));
-}
-
-/*
- * isp_resume_module_pipeline - Resume pipeline to which belongs the module
- * @me: ISP module's media entity
- *
- * Resume the whole pipeline if module's entity has an enabled link to the
- * output video node. It works only while pipeline can have no more than one
- * output node.
- */
-static void isp_resume_module_pipeline(struct media_entity *me)
-{
-	if (isp_pipeline_is_last(me))
-		isp_pipeline_resume(to_isp_pipeline(me));
-}
-
-/*
- * isp_suspend_modules - Suspend ISP submodules.
- * @isp: OMAP3 ISP device
- *
- * Returns 0 if suspend left in idle state all the submodules properly,
- * or returns 1 if a general Reset is required to suspend the submodules.
- */
-static int isp_suspend_modules(struct isp_device *isp)
-{
-	unsigned long timeout;
-
-	omap3isp_stat_suspend(&isp->isp_aewb);
-	omap3isp_stat_suspend(&isp->isp_af);
-	omap3isp_stat_suspend(&isp->isp_hist);
-	isp_suspend_module_pipeline(&isp->isp_res.subdev.entity);
-	isp_suspend_module_pipeline(&isp->isp_prev.subdev.entity);
-	isp_suspend_module_pipeline(&isp->isp_ccdc.subdev.entity);
-	isp_suspend_module_pipeline(&isp->isp_csi2a.subdev.entity);
-	isp_suspend_module_pipeline(&isp->isp_ccp2.subdev.entity);
-
-	timeout = jiffies + ISP_STOP_TIMEOUT;
-	while (omap3isp_stat_busy(&isp->isp_af)
-	    || omap3isp_stat_busy(&isp->isp_aewb)
-	    || omap3isp_stat_busy(&isp->isp_hist)
-	    || omap3isp_preview_busy(&isp->isp_prev)
-	    || omap3isp_resizer_busy(&isp->isp_res)
-	    || omap3isp_ccdc_busy(&isp->isp_ccdc)) {
-		if (time_after(jiffies, timeout)) {
-			dev_info(isp->dev, "can't stop modules.\n");
-			return 1;
-		}
-		msleep(1);
-	}
-
-	return 0;
-}
-
-/*
- * isp_resume_modules - Resume ISP submodules.
- * @isp: OMAP3 ISP device
- */
-static void isp_resume_modules(struct isp_device *isp)
-{
-	omap3isp_stat_resume(&isp->isp_aewb);
-	omap3isp_stat_resume(&isp->isp_af);
-	omap3isp_stat_resume(&isp->isp_hist);
-	isp_resume_module_pipeline(&isp->isp_res.subdev.entity);
-	isp_resume_module_pipeline(&isp->isp_prev.subdev.entity);
-	isp_resume_module_pipeline(&isp->isp_ccdc.subdev.entity);
-	isp_resume_module_pipeline(&isp->isp_csi2a.subdev.entity);
-	isp_resume_module_pipeline(&isp->isp_ccp2.subdev.entity);
-}
-
-/*
- * isp_reset - Reset ISP with a timeout wait for idle.
- * @isp: OMAP3 ISP device
- */
-static int isp_reset(struct isp_device *isp)
-{
-	unsigned long timeout = 0;
-
-	isp_reg_writel(isp,
-		       isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG)
-		       | ISP_SYSCONFIG_SOFTRESET,
-		       OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG);
-	while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN,
-			       ISP_SYSSTATUS) & 0x1)) {
-		if (timeout++ > 10000) {
-			dev_alert(isp->dev, "cannot reset ISP\n");
-			return -ETIMEDOUT;
-		}
-		udelay(1);
-	}
-
-	isp->crashed = 0;
-	return 0;
-}
-
-/*
- * isp_save_context - Saves the values of the ISP module registers.
- * @isp: OMAP3 ISP device
- * @reg_list: Structure containing pairs of register address and value to
- *            modify on OMAP.
- */
-static void
-isp_save_context(struct isp_device *isp, struct isp_reg *reg_list)
-{
-	struct isp_reg *next = reg_list;
-
-	for (; next->reg != ISP_TOK_TERM; next++)
-		next->val = isp_reg_readl(isp, next->mmio_range, next->reg);
-}
-
-/*
- * isp_restore_context - Restores the values of the ISP module registers.
- * @isp: OMAP3 ISP device
- * @reg_list: Structure containing pairs of register address and value to
- *            modify on OMAP.
- */
-static void
-isp_restore_context(struct isp_device *isp, struct isp_reg *reg_list)
-{
-	struct isp_reg *next = reg_list;
-
-	for (; next->reg != ISP_TOK_TERM; next++)
-		isp_reg_writel(isp, next->val, next->mmio_range, next->reg);
-}
-
-/*
- * isp_save_ctx - Saves ISP, CCDC, HIST, H3A, PREV, RESZ & MMU context.
- * @isp: OMAP3 ISP device
- *
- * Routine for saving the context of each module in the ISP.
- * CCDC, HIST, H3A, PREV, RESZ and MMU.
- */
-static void isp_save_ctx(struct isp_device *isp)
-{
-	isp_save_context(isp, isp_reg_list);
-	omap_iommu_save_ctx(isp->dev);
-}
-
-/*
- * isp_restore_ctx - Restores ISP, CCDC, HIST, H3A, PREV, RESZ & MMU context.
- * @isp: OMAP3 ISP device
- *
- * Routine for restoring the context of each module in the ISP.
- * CCDC, HIST, H3A, PREV, RESZ and MMU.
- */
-static void isp_restore_ctx(struct isp_device *isp)
-{
-	isp_restore_context(isp, isp_reg_list);
-	omap_iommu_restore_ctx(isp->dev);
-	omap3isp_ccdc_restore_context(isp);
-	omap3isp_preview_restore_context(isp);
-}
-
-/* -----------------------------------------------------------------------------
- * SBL resources management
- */
-#define OMAP3_ISP_SBL_READ	(OMAP3_ISP_SBL_CSI1_READ | \
-				 OMAP3_ISP_SBL_CCDC_LSC_READ | \
-				 OMAP3_ISP_SBL_PREVIEW_READ | \
-				 OMAP3_ISP_SBL_RESIZER_READ)
-#define OMAP3_ISP_SBL_WRITE	(OMAP3_ISP_SBL_CSI1_WRITE | \
-				 OMAP3_ISP_SBL_CSI2A_WRITE | \
-				 OMAP3_ISP_SBL_CSI2C_WRITE | \
-				 OMAP3_ISP_SBL_CCDC_WRITE | \
-				 OMAP3_ISP_SBL_PREVIEW_WRITE)
-
-void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res)
-{
-	u32 sbl = 0;
-
-	isp->sbl_resources |= res;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_CSI1_READ)
-		sbl |= ISPCTRL_SBL_SHARED_RPORTA;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_CCDC_LSC_READ)
-		sbl |= ISPCTRL_SBL_SHARED_RPORTB;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_CSI2C_WRITE)
-		sbl |= ISPCTRL_SBL_SHARED_WPORTC;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_RESIZER_WRITE)
-		sbl |= ISPCTRL_SBL_WR0_RAM_EN;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_WRITE)
-		sbl |= ISPCTRL_SBL_WR1_RAM_EN;
-
-	if (isp->sbl_resources & OMAP3_ISP_SBL_READ)
-		sbl |= ISPCTRL_SBL_RD_RAM_EN;
-
-	isp_reg_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, sbl);
-}
-
-void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res)
-{
-	u32 sbl = 0;
-
-	isp->sbl_resources &= ~res;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_CSI1_READ))
-		sbl |= ISPCTRL_SBL_SHARED_RPORTA;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_CCDC_LSC_READ))
-		sbl |= ISPCTRL_SBL_SHARED_RPORTB;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_CSI2C_WRITE))
-		sbl |= ISPCTRL_SBL_SHARED_WPORTC;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_RESIZER_WRITE))
-		sbl |= ISPCTRL_SBL_WR0_RAM_EN;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_WRITE))
-		sbl |= ISPCTRL_SBL_WR1_RAM_EN;
-
-	if (!(isp->sbl_resources & OMAP3_ISP_SBL_READ))
-		sbl |= ISPCTRL_SBL_RD_RAM_EN;
-
-	isp_reg_clr(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, sbl);
-}
-
-/*
- * isp_module_sync_idle - Helper to sync module with its idle state
- * @me: ISP submodule's media entity
- * @wait: ISP submodule's wait queue for streamoff/interrupt synchronization
- * @stopping: flag which tells module wants to stop
- *
- * This function checks if ISP submodule needs to wait for next interrupt. If
- * yes, makes the caller to sleep while waiting for such event.
- */
-int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
-			      atomic_t *stopping)
-{
-	struct isp_pipeline *pipe = to_isp_pipeline(me);
-
-	if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED ||
-	    (pipe->stream_state == ISP_PIPELINE_STREAM_SINGLESHOT &&
-	     !isp_pipeline_ready(pipe)))
-		return 0;
-
-	/*
-	 * atomic_set() doesn't include memory barrier on ARM platform for SMP
-	 * scenario. We'll call it here to avoid race conditions.
-	 */
-	atomic_set(stopping, 1);
-	smp_mb();
-
-	/*
-	 * If module is the last one, it's writing to memory. In this case,
-	 * it's necessary to check if the module is already paused due to
-	 * DMA queue underrun or if it has to wait for next interrupt to be
-	 * idle.
-	 * If it isn't the last one, the function won't sleep but *stopping
-	 * will still be set to warn next submodule caller's interrupt the
-	 * module wants to be idle.
-	 */
-	if (isp_pipeline_is_last(me)) {
-		struct isp_video *video = pipe->output;
-		unsigned long flags;
-		spin_lock_irqsave(&video->queue->irqlock, flags);
-		if (video->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_UNDERRUN) {
-			spin_unlock_irqrestore(&video->queue->irqlock, flags);
-			atomic_set(stopping, 0);
-			smp_mb();
-			return 0;
-		}
-		spin_unlock_irqrestore(&video->queue->irqlock, flags);
-		if (!wait_event_timeout(*wait, !atomic_read(stopping),
-					msecs_to_jiffies(1000))) {
-			atomic_set(stopping, 0);
-			smp_mb();
-			return -ETIMEDOUT;
-		}
-	}
-
-	return 0;
-}
-
-/*
- * omap3isp_module_sync_is_stopped - Helper to verify if module was stopping
- * @wait: ISP submodule's wait queue for streamoff/interrupt synchronization
- * @stopping: flag which tells module wants to stop
- *
- * This function checks if ISP submodule was stopping. In case of yes, it
- * notices the caller by setting stopping to 0 and waking up the wait queue.
- * Returns 1 if it was stopping or 0 otherwise.
- */
-int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait,
-				     atomic_t *stopping)
-{
-	if (atomic_cmpxchg(stopping, 1, 0)) {
-		wake_up(wait);
-		return 1;
-	}
-
-	return 0;
-}
-
-/* --------------------------------------------------------------------------
- * Clock management
- */
-
-#define ISPCTRL_CLKS_MASK	(ISPCTRL_H3A_CLK_EN | \
-				 ISPCTRL_HIST_CLK_EN | \
-				 ISPCTRL_RSZ_CLK_EN | \
-				 (ISPCTRL_CCDC_CLK_EN | ISPCTRL_CCDC_RAM_EN) | \
-				 (ISPCTRL_PREV_CLK_EN | ISPCTRL_PREV_RAM_EN))
-
-static void __isp_subclk_update(struct isp_device *isp)
-{
-	u32 clk = 0;
-
-	/* AEWB and AF share the same clock. */
-	if (isp->subclk_resources &
-	    (OMAP3_ISP_SUBCLK_AEWB | OMAP3_ISP_SUBCLK_AF))
-		clk |= ISPCTRL_H3A_CLK_EN;
-
-	if (isp->subclk_resources & OMAP3_ISP_SUBCLK_HIST)
-		clk |= ISPCTRL_HIST_CLK_EN;
-
-	if (isp->subclk_resources & OMAP3_ISP_SUBCLK_RESIZER)
-		clk |= ISPCTRL_RSZ_CLK_EN;
-
-	/* NOTE: For CCDC & Preview submodules, we need to affect internal
-	 *       RAM as well.
-	 */
-	if (isp->subclk_resources & OMAP3_ISP_SUBCLK_CCDC)
-		clk |= ISPCTRL_CCDC_CLK_EN | ISPCTRL_CCDC_RAM_EN;
-
-	if (isp->subclk_resources & OMAP3_ISP_SUBCLK_PREVIEW)
-		clk |= ISPCTRL_PREV_CLK_EN | ISPCTRL_PREV_RAM_EN;
-
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL,
-			ISPCTRL_CLKS_MASK, clk);
-}
-
-void omap3isp_subclk_enable(struct isp_device *isp,
-			    enum isp_subclk_resource res)
-{
-	isp->subclk_resources |= res;
-
-	__isp_subclk_update(isp);
-}
-
-void omap3isp_subclk_disable(struct isp_device *isp,
-			     enum isp_subclk_resource res)
-{
-	isp->subclk_resources &= ~res;
-
-	__isp_subclk_update(isp);
-}
-
-/*
- * isp_enable_clocks - Enable ISP clocks
- * @isp: OMAP3 ISP device
- *
- * Return 0 if successful, or clk_enable return value if any of tthem fails.
- */
-static int isp_enable_clocks(struct isp_device *isp)
-{
-	int r;
-	unsigned long rate;
-	int divisor;
-
-	/*
-	 * cam_mclk clock chain:
-	 *   dpll4 -> dpll4_m5 -> dpll4_m5x2 -> cam_mclk
-	 *
-	 * In OMAP3630 dpll4_m5x2 != 2 x dpll4_m5 but both are
-	 * set to the same value. Hence the rate set for dpll4_m5
-	 * has to be twice of what is set on OMAP3430 to get
-	 * the required value for cam_mclk
-	 */
-	if (cpu_is_omap3630())
-		divisor = 1;
-	else
-		divisor = 2;
-
-	r = clk_enable(isp->clock[ISP_CLK_CAM_ICK]);
-	if (r) {
-		dev_err(isp->dev, "clk_enable cam_ick failed\n");
-		goto out_clk_enable_ick;
-	}
-	r = clk_set_rate(isp->clock[ISP_CLK_DPLL4_M5_CK],
-			 CM_CAM_MCLK_HZ/divisor);
-	if (r) {
-		dev_err(isp->dev, "clk_set_rate for dpll4_m5_ck failed\n");
-		goto out_clk_enable_mclk;
-	}
-	r = clk_enable(isp->clock[ISP_CLK_CAM_MCLK]);
-	if (r) {
-		dev_err(isp->dev, "clk_enable cam_mclk failed\n");
-		goto out_clk_enable_mclk;
-	}
-	rate = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]);
-	if (rate != CM_CAM_MCLK_HZ)
-		dev_warn(isp->dev, "unexpected cam_mclk rate:\n"
-				   " expected : %d\n"
-				   " actual   : %ld\n", CM_CAM_MCLK_HZ, rate);
-	r = clk_enable(isp->clock[ISP_CLK_CSI2_FCK]);
-	if (r) {
-		dev_err(isp->dev, "clk_enable csi2_fck failed\n");
-		goto out_clk_enable_csi2_fclk;
-	}
-	return 0;
-
-out_clk_enable_csi2_fclk:
-	clk_disable(isp->clock[ISP_CLK_CAM_MCLK]);
-out_clk_enable_mclk:
-	clk_disable(isp->clock[ISP_CLK_CAM_ICK]);
-out_clk_enable_ick:
-	return r;
-}
-
-/*
- * isp_disable_clocks - Disable ISP clocks
- * @isp: OMAP3 ISP device
- */
-static void isp_disable_clocks(struct isp_device *isp)
-{
-	clk_disable(isp->clock[ISP_CLK_CAM_ICK]);
-	clk_disable(isp->clock[ISP_CLK_CAM_MCLK]);
-	clk_disable(isp->clock[ISP_CLK_CSI2_FCK]);
-}
-
-static const char *isp_clocks[] = {
-	"cam_ick",
-	"cam_mclk",
-	"dpll4_m5_ck",
-	"csi2_96m_fck",
-	"l3_ick",
-};
-
-static void isp_put_clocks(struct isp_device *isp)
-{
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(isp_clocks); ++i) {
-		if (isp->clock[i]) {
-			clk_put(isp->clock[i]);
-			isp->clock[i] = NULL;
-		}
-	}
-}
-
-static int isp_get_clocks(struct isp_device *isp)
-{
-	struct clk *clk;
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(isp_clocks); ++i) {
-		clk = clk_get(isp->dev, isp_clocks[i]);
-		if (IS_ERR(clk)) {
-			dev_err(isp->dev, "clk_get %s failed\n", isp_clocks[i]);
-			isp_put_clocks(isp);
-			return PTR_ERR(clk);
-		}
-
-		isp->clock[i] = clk;
-	}
-
-	return 0;
-}
-
-/*
- * omap3isp_get - Acquire the ISP resource.
- *
- * Initializes the clocks for the first acquire.
- *
- * Increment the reference count on the ISP. If the first reference is taken,
- * enable clocks and power-up all submodules.
- *
- * Return a pointer to the ISP device structure, or NULL if an error occurred.
- */
-static struct isp_device *__omap3isp_get(struct isp_device *isp, bool irq)
-{
-	struct isp_device *__isp = isp;
-
-	if (isp == NULL)
-		return NULL;
-
-	mutex_lock(&isp->isp_mutex);
-	if (isp->ref_count > 0)
-		goto out;
-
-	if (isp_enable_clocks(isp) < 0) {
-		__isp = NULL;
-		goto out;
-	}
-
-	/* We don't want to restore context before saving it! */
-	if (isp->has_context)
-		isp_restore_ctx(isp);
-
-	if (irq)
-		isp_enable_interrupts(isp);
-
-out:
-	if (__isp != NULL)
-		isp->ref_count++;
-	mutex_unlock(&isp->isp_mutex);
-
-	return __isp;
-}
-
-struct isp_device *omap3isp_get(struct isp_device *isp)
-{
-	return __omap3isp_get(isp, true);
-}
-
-/*
- * omap3isp_put - Release the ISP
- *
- * Decrement the reference count on the ISP. If the last reference is released,
- * power-down all submodules, disable clocks and free temporary buffers.
- */
-void omap3isp_put(struct isp_device *isp)
-{
-	if (isp == NULL)
-		return;
-
-	mutex_lock(&isp->isp_mutex);
-	BUG_ON(isp->ref_count == 0);
-	if (--isp->ref_count == 0) {
-		isp_disable_interrupts(isp);
-		if (isp->domain) {
-			isp_save_ctx(isp);
-			isp->has_context = 1;
-		}
-		/* Reset the ISP if an entity has failed to stop. This is the
-		 * only way to recover from such conditions.
-		 */
-		if (isp->crashed)
-			isp_reset(isp);
-		isp_disable_clocks(isp);
-	}
-	mutex_unlock(&isp->isp_mutex);
-}
-
-/* --------------------------------------------------------------------------
- * Platform device driver
- */
-
-/*
- * omap3isp_print_status - Prints the values of the ISP Control Module registers
- * @isp: OMAP3 ISP device
- */
-#define ISP_PRINT_REGISTER(isp, name)\
-	dev_dbg(isp->dev, "###ISP " #name "=0x%08x\n", \
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_##name))
-#define SBL_PRINT_REGISTER(isp, name)\
-	dev_dbg(isp->dev, "###SBL " #name "=0x%08x\n", \
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_##name))
-
-void omap3isp_print_status(struct isp_device *isp)
-{
-	dev_dbg(isp->dev, "-------------ISP Register dump--------------\n");
-
-	ISP_PRINT_REGISTER(isp, SYSCONFIG);
-	ISP_PRINT_REGISTER(isp, SYSSTATUS);
-	ISP_PRINT_REGISTER(isp, IRQ0ENABLE);
-	ISP_PRINT_REGISTER(isp, IRQ0STATUS);
-	ISP_PRINT_REGISTER(isp, TCTRL_GRESET_LENGTH);
-	ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_REPLAY);
-	ISP_PRINT_REGISTER(isp, CTRL);
-	ISP_PRINT_REGISTER(isp, TCTRL_CTRL);
-	ISP_PRINT_REGISTER(isp, TCTRL_FRAME);
-	ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_DELAY);
-	ISP_PRINT_REGISTER(isp, TCTRL_STRB_DELAY);
-	ISP_PRINT_REGISTER(isp, TCTRL_SHUT_DELAY);
-	ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_LENGTH);
-	ISP_PRINT_REGISTER(isp, TCTRL_STRB_LENGTH);
-	ISP_PRINT_REGISTER(isp, TCTRL_SHUT_LENGTH);
-
-	SBL_PRINT_REGISTER(isp, PCR);
-	SBL_PRINT_REGISTER(isp, SDR_REQ_EXP);
-
-	dev_dbg(isp->dev, "--------------------------------------------\n");
-}
-
-#ifdef CONFIG_PM
-
-/*
- * Power management support.
- *
- * As the ISP can't properly handle an input video stream interruption on a non
- * frame boundary, the ISP pipelines need to be stopped before sensors get
- * suspended. However, as suspending the sensors can require a running clock,
- * which can be provided by the ISP, the ISP can't be completely suspended
- * before the sensor.
- *
- * To solve this problem power management support is split into prepare/complete
- * and suspend/resume operations. The pipelines are stopped in prepare() and the
- * ISP clocks get disabled in suspend(). Similarly, the clocks are reenabled in
- * resume(), and the the pipelines are restarted in complete().
- *
- * TODO: PM dependencies between the ISP and sensors are not modeled explicitly
- * yet.
- */
-static int isp_pm_prepare(struct device *dev)
-{
-	struct isp_device *isp = dev_get_drvdata(dev);
-	int reset;
-
-	WARN_ON(mutex_is_locked(&isp->isp_mutex));
-
-	if (isp->ref_count == 0)
-		return 0;
-
-	reset = isp_suspend_modules(isp);
-	isp_disable_interrupts(isp);
-	isp_save_ctx(isp);
-	if (reset)
-		isp_reset(isp);
-
-	return 0;
-}
-
-static int isp_pm_suspend(struct device *dev)
-{
-	struct isp_device *isp = dev_get_drvdata(dev);
-
-	WARN_ON(mutex_is_locked(&isp->isp_mutex));
-
-	if (isp->ref_count)
-		isp_disable_clocks(isp);
-
-	return 0;
-}
-
-static int isp_pm_resume(struct device *dev)
-{
-	struct isp_device *isp = dev_get_drvdata(dev);
-
-	if (isp->ref_count == 0)
-		return 0;
-
-	return isp_enable_clocks(isp);
-}
-
-static void isp_pm_complete(struct device *dev)
-{
-	struct isp_device *isp = dev_get_drvdata(dev);
-
-	if (isp->ref_count == 0)
-		return;
-
-	isp_restore_ctx(isp);
-	isp_enable_interrupts(isp);
-	isp_resume_modules(isp);
-}
-
-#else
-
-#define isp_pm_prepare	NULL
-#define isp_pm_suspend	NULL
-#define isp_pm_resume	NULL
-#define isp_pm_complete	NULL
-
-#endif /* CONFIG_PM */
-
-static void isp_unregister_entities(struct isp_device *isp)
-{
-	omap3isp_csi2_unregister_entities(&isp->isp_csi2a);
-	omap3isp_ccp2_unregister_entities(&isp->isp_ccp2);
-	omap3isp_ccdc_unregister_entities(&isp->isp_ccdc);
-	omap3isp_preview_unregister_entities(&isp->isp_prev);
-	omap3isp_resizer_unregister_entities(&isp->isp_res);
-	omap3isp_stat_unregister_entities(&isp->isp_aewb);
-	omap3isp_stat_unregister_entities(&isp->isp_af);
-	omap3isp_stat_unregister_entities(&isp->isp_hist);
-
-	v4l2_device_unregister(&isp->v4l2_dev);
-	media_device_unregister(&isp->media_dev);
-}
-
-/*
- * isp_register_subdev_group - Register a group of subdevices
- * @isp: OMAP3 ISP device
- * @board_info: I2C subdevs board information array
- *
- * Register all I2C subdevices in the board_info array. The array must be
- * terminated by a NULL entry, and the first entry must be the sensor.
- *
- * Return a pointer to the sensor media entity if it has been successfully
- * registered, or NULL otherwise.
- */
-static struct v4l2_subdev *
-isp_register_subdev_group(struct isp_device *isp,
-		     struct isp_subdev_i2c_board_info *board_info)
-{
-	struct v4l2_subdev *sensor = NULL;
-	unsigned int first;
-
-	if (board_info->board_info == NULL)
-		return NULL;
-
-	for (first = 1; board_info->board_info; ++board_info, first = 0) {
-		struct v4l2_subdev *subdev;
-		struct i2c_adapter *adapter;
-
-		adapter = i2c_get_adapter(board_info->i2c_adapter_id);
-		if (adapter == NULL) {
-			printk(KERN_ERR "%s: Unable to get I2C adapter %d for "
-				"device %s\n", __func__,
-				board_info->i2c_adapter_id,
-				board_info->board_info->type);
-			continue;
-		}
-
-		subdev = v4l2_i2c_new_subdev_board(&isp->v4l2_dev, adapter,
-				board_info->board_info, NULL);
-		if (subdev == NULL) {
-			printk(KERN_ERR "%s: Unable to register subdev %s\n",
-				__func__, board_info->board_info->type);
-			continue;
-		}
-
-		if (first)
-			sensor = subdev;
-	}
-
-	return sensor;
-}
-
-static int isp_register_entities(struct isp_device *isp)
-{
-	struct isp_platform_data *pdata = isp->pdata;
-	struct isp_v4l2_subdevs_group *subdevs;
-	int ret;
-
-	isp->media_dev.dev = isp->dev;
-	strlcpy(isp->media_dev.model, "TI OMAP3 ISP",
-		sizeof(isp->media_dev.model));
-	isp->media_dev.hw_revision = isp->revision;
-	isp->media_dev.link_notify = isp_pipeline_link_notify;
-	ret = media_device_register(&isp->media_dev);
-	if (ret < 0) {
-		printk(KERN_ERR "%s: Media device registration failed (%d)\n",
-			__func__, ret);
-		return ret;
-	}
-
-	isp->v4l2_dev.mdev = &isp->media_dev;
-	ret = v4l2_device_register(isp->dev, &isp->v4l2_dev);
-	if (ret < 0) {
-		printk(KERN_ERR "%s: V4L2 device registration failed (%d)\n",
-			__func__, ret);
-		goto done;
-	}
-
-	/* Register internal entities */
-	ret = omap3isp_ccp2_register_entities(&isp->isp_ccp2, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_csi2_register_entities(&isp->isp_csi2a, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_ccdc_register_entities(&isp->isp_ccdc, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_preview_register_entities(&isp->isp_prev,
-						 &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_resizer_register_entities(&isp->isp_res, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_stat_register_entities(&isp->isp_aewb, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_stat_register_entities(&isp->isp_af, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	ret = omap3isp_stat_register_entities(&isp->isp_hist, &isp->v4l2_dev);
-	if (ret < 0)
-		goto done;
-
-	/* Register external entities */
-	for (subdevs = pdata->subdevs; subdevs && subdevs->subdevs; ++subdevs) {
-		struct v4l2_subdev *sensor;
-		struct media_entity *input;
-		unsigned int flags;
-		unsigned int pad;
-
-		sensor = isp_register_subdev_group(isp, subdevs->subdevs);
-		if (sensor == NULL)
-			continue;
-
-		sensor->host_priv = subdevs;
-
-		/* Connect the sensor to the correct interface module. Parallel
-		 * sensors are connected directly to the CCDC, while serial
-		 * sensors are connected to the CSI2a, CCP2b or CSI2c receiver
-		 * through CSIPHY1 or CSIPHY2.
-		 */
-		switch (subdevs->interface) {
-		case ISP_INTERFACE_PARALLEL:
-			input = &isp->isp_ccdc.subdev.entity;
-			pad = CCDC_PAD_SINK;
-			flags = 0;
-			break;
-
-		case ISP_INTERFACE_CSI2A_PHY2:
-			input = &isp->isp_csi2a.subdev.entity;
-			pad = CSI2_PAD_SINK;
-			flags = MEDIA_LNK_FL_IMMUTABLE
-			      | MEDIA_LNK_FL_ENABLED;
-			break;
-
-		case ISP_INTERFACE_CCP2B_PHY1:
-		case ISP_INTERFACE_CCP2B_PHY2:
-			input = &isp->isp_ccp2.subdev.entity;
-			pad = CCP2_PAD_SINK;
-			flags = 0;
-			break;
-
-		case ISP_INTERFACE_CSI2C_PHY1:
-			input = &isp->isp_csi2c.subdev.entity;
-			pad = CSI2_PAD_SINK;
-			flags = MEDIA_LNK_FL_IMMUTABLE
-			      | MEDIA_LNK_FL_ENABLED;
-			break;
-
-		default:
-			printk(KERN_ERR "%s: invalid interface type %u\n",
-			       __func__, subdevs->interface);
-			ret = -EINVAL;
-			goto done;
-		}
-
-		ret = media_entity_create_link(&sensor->entity, 0, input, pad,
-					       flags);
-		if (ret < 0)
-			goto done;
-	}
-
-	ret = v4l2_device_register_subdev_nodes(&isp->v4l2_dev);
-
-done:
-	if (ret < 0)
-		isp_unregister_entities(isp);
-
-	return ret;
-}
-
-static void isp_cleanup_modules(struct isp_device *isp)
-{
-	omap3isp_h3a_aewb_cleanup(isp);
-	omap3isp_h3a_af_cleanup(isp);
-	omap3isp_hist_cleanup(isp);
-	omap3isp_resizer_cleanup(isp);
-	omap3isp_preview_cleanup(isp);
-	omap3isp_ccdc_cleanup(isp);
-	omap3isp_ccp2_cleanup(isp);
-	omap3isp_csi2_cleanup(isp);
-}
-
-static int isp_initialize_modules(struct isp_device *isp)
-{
-	int ret;
-
-	ret = omap3isp_csiphy_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "CSI PHY initialization failed\n");
-		goto error_csiphy;
-	}
-
-	ret = omap3isp_csi2_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "CSI2 initialization failed\n");
-		goto error_csi2;
-	}
-
-	ret = omap3isp_ccp2_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "CCP2 initialization failed\n");
-		goto error_ccp2;
-	}
-
-	ret = omap3isp_ccdc_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "CCDC initialization failed\n");
-		goto error_ccdc;
-	}
-
-	ret = omap3isp_preview_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "Preview initialization failed\n");
-		goto error_preview;
-	}
-
-	ret = omap3isp_resizer_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "Resizer initialization failed\n");
-		goto error_resizer;
-	}
-
-	ret = omap3isp_hist_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "Histogram initialization failed\n");
-		goto error_hist;
-	}
-
-	ret = omap3isp_h3a_aewb_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "H3A AEWB initialization failed\n");
-		goto error_h3a_aewb;
-	}
-
-	ret = omap3isp_h3a_af_init(isp);
-	if (ret < 0) {
-		dev_err(isp->dev, "H3A AF initialization failed\n");
-		goto error_h3a_af;
-	}
-
-	/* Connect the submodules. */
-	ret = media_entity_create_link(
-			&isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE,
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE,
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
-			&isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF,
-			&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_prev.subdev.entity, PREV_PAD_SOURCE,
-			&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
-			&isp->isp_aewb.subdev.entity, 0,
-			MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
-			&isp->isp_af.subdev.entity, 0,
-			MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(
-			&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
-			&isp->isp_hist.subdev.entity, 0,
-			MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
-	if (ret < 0)
-		goto error_link;
-
-	return 0;
-
-error_link:
-	omap3isp_h3a_af_cleanup(isp);
-error_h3a_af:
-	omap3isp_h3a_aewb_cleanup(isp);
-error_h3a_aewb:
-	omap3isp_hist_cleanup(isp);
-error_hist:
-	omap3isp_resizer_cleanup(isp);
-error_resizer:
-	omap3isp_preview_cleanup(isp);
-error_preview:
-	omap3isp_ccdc_cleanup(isp);
-error_ccdc:
-	omap3isp_ccp2_cleanup(isp);
-error_ccp2:
-	omap3isp_csi2_cleanup(isp);
-error_csi2:
-error_csiphy:
-	return ret;
-}
-
-/*
- * isp_remove - Remove ISP platform device
- * @pdev: Pointer to ISP platform device
- *
- * Always returns 0.
- */
-static int __devexit isp_remove(struct platform_device *pdev)
-{
-	struct isp_device *isp = platform_get_drvdata(pdev);
-	int i;
-
-	isp_unregister_entities(isp);
-	isp_cleanup_modules(isp);
-
-	__omap3isp_get(isp, false);
-	iommu_detach_device(isp->domain, &pdev->dev);
-	iommu_domain_free(isp->domain);
-	isp->domain = NULL;
-	omap3isp_put(isp);
-
-	free_irq(isp->irq_num, isp);
-	isp_put_clocks(isp);
-
-	for (i = 0; i < OMAP3_ISP_IOMEM_LAST; i++) {
-		if (isp->mmio_base[i]) {
-			iounmap(isp->mmio_base[i]);
-			isp->mmio_base[i] = NULL;
-		}
-
-		if (isp->mmio_base_phys[i]) {
-			release_mem_region(isp->mmio_base_phys[i],
-					   isp->mmio_size[i]);
-			isp->mmio_base_phys[i] = 0;
-		}
-	}
-
-	regulator_put(isp->isp_csiphy1.vdd);
-	regulator_put(isp->isp_csiphy2.vdd);
-	kfree(isp);
-
-	return 0;
-}
-
-static int isp_map_mem_resource(struct platform_device *pdev,
-				struct isp_device *isp,
-				enum isp_mem_resources res)
-{
-	struct resource *mem;
-
-	/* request the mem region for the camera registers */
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, res);
-	if (!mem) {
-		dev_err(isp->dev, "no mem resource?\n");
-		return -ENODEV;
-	}
-
-	if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) {
-		dev_err(isp->dev,
-			"cannot reserve camera register I/O region\n");
-		return -ENODEV;
-	}
-	isp->mmio_base_phys[res] = mem->start;
-	isp->mmio_size[res] = resource_size(mem);
-
-	/* map the region */
-	isp->mmio_base[res] = ioremap_nocache(isp->mmio_base_phys[res],
-					      isp->mmio_size[res]);
-	if (!isp->mmio_base[res]) {
-		dev_err(isp->dev, "cannot map camera register I/O region\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-/*
- * isp_probe - Probe ISP platform device
- * @pdev: Pointer to ISP platform device
- *
- * Returns 0 if successful,
- *   -ENOMEM if no memory available,
- *   -ENODEV if no platform device resources found
- *     or no space for remapping registers,
- *   -EINVAL if couldn't install ISR,
- *   or clk_get return error value.
- */
-static int __devinit isp_probe(struct platform_device *pdev)
-{
-	struct isp_platform_data *pdata = pdev->dev.platform_data;
-	struct isp_device *isp;
-	int ret;
-	int i, m;
-
-	if (pdata == NULL)
-		return -EINVAL;
-
-	isp = kzalloc(sizeof(*isp), GFP_KERNEL);
-	if (!isp) {
-		dev_err(&pdev->dev, "could not allocate memory\n");
-		return -ENOMEM;
-	}
-
-	isp->autoidle = autoidle;
-	isp->platform_cb.set_xclk = isp_set_xclk;
-
-	mutex_init(&isp->isp_mutex);
-	spin_lock_init(&isp->stat_lock);
-
-	isp->dev = &pdev->dev;
-	isp->pdata = pdata;
-	isp->ref_count = 0;
-
-	isp->raw_dmamask = DMA_BIT_MASK(32);
-	isp->dev->dma_mask = &isp->raw_dmamask;
-	isp->dev->coherent_dma_mask = DMA_BIT_MASK(32);
-
-	platform_set_drvdata(pdev, isp);
-
-	/* Regulators */
-	isp->isp_csiphy1.vdd = regulator_get(&pdev->dev, "VDD_CSIPHY1");
-	isp->isp_csiphy2.vdd = regulator_get(&pdev->dev, "VDD_CSIPHY2");
-
-	/* Clocks */
-	ret = isp_map_mem_resource(pdev, isp, OMAP3_ISP_IOMEM_MAIN);
-	if (ret < 0)
-		goto error;
-
-	ret = isp_get_clocks(isp);
-	if (ret < 0)
-		goto error;
-
-	if (__omap3isp_get(isp, false) == NULL)
-		goto error;
-
-	ret = isp_reset(isp);
-	if (ret < 0)
-		goto error_isp;
-
-	/* Memory resources */
-	isp->revision = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION);
-	dev_info(isp->dev, "Revision %d.%d found\n",
-		 (isp->revision & 0xf0) >> 4, isp->revision & 0x0f);
-
-	for (m = 0; m < ARRAY_SIZE(isp_res_maps); m++)
-		if (isp->revision == isp_res_maps[m].isp_rev)
-			break;
-
-	if (m == ARRAY_SIZE(isp_res_maps)) {
-		dev_err(isp->dev, "No resource map found for ISP rev %d.%d\n",
-			(isp->revision & 0xf0) >> 4, isp->revision & 0xf);
-		ret = -ENODEV;
-		goto error_isp;
-	}
-
-	for (i = 1; i < OMAP3_ISP_IOMEM_LAST; i++) {
-		if (isp_res_maps[m].map & 1 << i) {
-			ret = isp_map_mem_resource(pdev, isp, i);
-			if (ret)
-				goto error_isp;
-		}
-	}
-
-	isp->domain = iommu_domain_alloc(pdev->dev.bus);
-	if (!isp->domain) {
-		dev_err(isp->dev, "can't alloc iommu domain\n");
-		ret = -ENOMEM;
-		goto error_isp;
-	}
-
-	ret = iommu_attach_device(isp->domain, &pdev->dev);
-	if (ret) {
-		dev_err(&pdev->dev, "can't attach iommu device: %d\n", ret);
-		goto free_domain;
-	}
-
-	/* Interrupt */
-	isp->irq_num = platform_get_irq(pdev, 0);
-	if (isp->irq_num <= 0) {
-		dev_err(isp->dev, "No IRQ resource\n");
-		ret = -ENODEV;
-		goto detach_dev;
-	}
-
-	if (request_irq(isp->irq_num, isp_isr, IRQF_SHARED, "OMAP3 ISP", isp)) {
-		dev_err(isp->dev, "Unable to request IRQ\n");
-		ret = -EINVAL;
-		goto detach_dev;
-	}
-
-	/* Entities */
-	ret = isp_initialize_modules(isp);
-	if (ret < 0)
-		goto error_irq;
-
-	ret = isp_register_entities(isp);
-	if (ret < 0)
-		goto error_modules;
-
-	isp_core_init(isp, 1);
-	omap3isp_put(isp);
-
-	return 0;
-
-error_modules:
-	isp_cleanup_modules(isp);
-error_irq:
-	free_irq(isp->irq_num, isp);
-detach_dev:
-	iommu_detach_device(isp->domain, &pdev->dev);
-free_domain:
-	iommu_domain_free(isp->domain);
-error_isp:
-	omap3isp_put(isp);
-error:
-	isp_put_clocks(isp);
-
-	for (i = 0; i < OMAP3_ISP_IOMEM_LAST; i++) {
-		if (isp->mmio_base[i]) {
-			iounmap(isp->mmio_base[i]);
-			isp->mmio_base[i] = NULL;
-		}
-
-		if (isp->mmio_base_phys[i]) {
-			release_mem_region(isp->mmio_base_phys[i],
-					   isp->mmio_size[i]);
-			isp->mmio_base_phys[i] = 0;
-		}
-	}
-	regulator_put(isp->isp_csiphy2.vdd);
-	regulator_put(isp->isp_csiphy1.vdd);
-	platform_set_drvdata(pdev, NULL);
-
-	mutex_destroy(&isp->isp_mutex);
-	kfree(isp);
-
-	return ret;
-}
-
-static const struct dev_pm_ops omap3isp_pm_ops = {
-	.prepare = isp_pm_prepare,
-	.suspend = isp_pm_suspend,
-	.resume = isp_pm_resume,
-	.complete = isp_pm_complete,
-};
-
-static struct platform_device_id omap3isp_id_table[] = {
-	{ "omap3isp", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(platform, omap3isp_id_table);
-
-static struct platform_driver omap3isp_driver = {
-	.probe = isp_probe,
-	.remove = __devexit_p(isp_remove),
-	.id_table = omap3isp_id_table,
-	.driver = {
-		.owner = THIS_MODULE,
-		.name = "omap3isp",
-		.pm	= &omap3isp_pm_ops,
-	},
-};
-
-module_platform_driver(omap3isp_driver);
-
-MODULE_AUTHOR("Nokia Corporation");
-MODULE_DESCRIPTION("TI OMAP3 ISP driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(ISP_VIDEO_DRIVER_VERSION);