dmaengine: ipu: Remove the driver

The i.MX3 IPU driver does not support devicetree and i.MX has been converted
to a DT-only platform since kernel 5.10.

As there is no user for this driver anymore, just remove it.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230729192945.1217206-1-festevam@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

6 files changed, 0 insertions, 2363 deletions

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 0f9832f0ef58..1d485fce91c8 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -472,25 +472,6 @@ config MXS_DMA
 	  Support the MXS DMA engine. This engine including APBH-DMA
 	  and APBX-DMA is integrated into some Freescale chips.
 
-config MX3_IPU
-	bool "MX3x Image Processing Unit support"
-	depends on ARCH_MXC
-	select DMA_ENGINE
-	default y
-	help
-	  If you plan to use the Image Processing unit in the i.MX3x, say
-	  Y here. If unsure, select Y.
-
-config MX3_IPU_IRQS
-	int "Number of dynamically mapped interrupts for IPU"
-	depends on MX3_IPU
-	range 2 137
-	default 4
-	help
-	  Out of 137 interrupt sources on i.MX31 IPU only very few are used.
-	  To avoid bloating the irq_desc[] array we allocate a sufficient
-	  number of IRQ slots and map them dynamically to specific sources.
-
 config NBPFAXI_DMA
 	tristate "Renesas Type-AXI NBPF DMA support"
 	select DMA_ENGINE
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index a4fd1ce29510..07cdfd27d09c 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -55,7 +55,6 @@ obj-$(CONFIG_MPC512X_DMA) += mpc512x_dma.o
 obj-$(CONFIG_MV_XOR) += mv_xor.o
 obj-$(CONFIG_MV_XOR_V2) += mv_xor_v2.o
 obj-$(CONFIG_MXS_DMA) += mxs-dma.o
-obj-$(CONFIG_MX3_IPU) += ipu/
 obj-$(CONFIG_NBPFAXI_DMA) += nbpfaxi.o
 obj-$(CONFIG_OWL_DMA) += owl-dma.o
 obj-$(CONFIG_PCH_DMA) += pch_dma.o
diff --git a/drivers/dma/ipu/Makefile b/drivers/dma/ipu/Makefile
deleted file mode 100644
index c79ff116daf6..000000000000
--- a/drivers/dma/ipu/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y	+= ipu_irq.o ipu_idmac.o
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
deleted file mode 100644
index d799b99c18bd..000000000000
--- a/drivers/dma/ipu/ipu_idmac.c
+++ /dev/null
@@ -1,1801 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2008
- * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
- *
- * Copyright (C) 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/err.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/list.h>
-#include <linux/clk.h>
-#include <linux/vmalloc.h>
-#include <linux/string.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/dma/ipu-dma.h>
-
-#include "../dmaengine.h"
-#include "ipu_intern.h"
-
-#define FS_VF_IN_VALID	0x00000002
-#define FS_ENC_IN_VALID	0x00000001
-
-static int ipu_disable_channel(struct idmac *idmac, struct idmac_channel *ichan,
-			       bool wait_for_stop);
-
-/*
- * There can be only one, we could allocate it dynamically, but then we'd have
- * to add an extra parameter to some functions, and use something as ugly as
- *	struct ipu *ipu = to_ipu(to_idmac(ichan->dma_chan.device));
- * in the ISR
- */
-static struct ipu ipu_data;
-
-#define to_ipu(id) container_of(id, struct ipu, idmac)
-
-static u32 __idmac_read_icreg(struct ipu *ipu, unsigned long reg)
-{
-	return __raw_readl(ipu->reg_ic + reg);
-}
-
-#define idmac_read_icreg(ipu, reg) __idmac_read_icreg(ipu, reg - IC_CONF)
-
-static void __idmac_write_icreg(struct ipu *ipu, u32 value, unsigned long reg)
-{
-	__raw_writel(value, ipu->reg_ic + reg);
-}
-
-#define idmac_write_icreg(ipu, v, reg) __idmac_write_icreg(ipu, v, reg - IC_CONF)
-
-static u32 idmac_read_ipureg(struct ipu *ipu, unsigned long reg)
-{
-	return __raw_readl(ipu->reg_ipu + reg);
-}
-
-static void idmac_write_ipureg(struct ipu *ipu, u32 value, unsigned long reg)
-{
-	__raw_writel(value, ipu->reg_ipu + reg);
-}
-
-/*****************************************************************************
- * IPU / IC common functions
- */
-static void dump_idmac_reg(struct ipu *ipu)
-{
-	dev_dbg(ipu->dev, "IDMAC_CONF 0x%x, IC_CONF 0x%x, IDMAC_CHA_EN 0x%x, "
-		"IDMAC_CHA_PRI 0x%x, IDMAC_CHA_BUSY 0x%x\n",
-		idmac_read_icreg(ipu, IDMAC_CONF),
-		idmac_read_icreg(ipu, IC_CONF),
-		idmac_read_icreg(ipu, IDMAC_CHA_EN),
-		idmac_read_icreg(ipu, IDMAC_CHA_PRI),
-		idmac_read_icreg(ipu, IDMAC_CHA_BUSY));
-	dev_dbg(ipu->dev, "BUF0_RDY 0x%x, BUF1_RDY 0x%x, CUR_BUF 0x%x, "
-		"DB_MODE 0x%x, TASKS_STAT 0x%x\n",
-		idmac_read_ipureg(ipu, IPU_CHA_BUF0_RDY),
-		idmac_read_ipureg(ipu, IPU_CHA_BUF1_RDY),
-		idmac_read_ipureg(ipu, IPU_CHA_CUR_BUF),
-		idmac_read_ipureg(ipu, IPU_CHA_DB_MODE_SEL),
-		idmac_read_ipureg(ipu, IPU_TASKS_STAT));
-}
-
-static uint32_t bytes_per_pixel(enum pixel_fmt fmt)
-{
-	switch (fmt) {
-	case IPU_PIX_FMT_GENERIC:	/* generic data */
-	case IPU_PIX_FMT_RGB332:
-	case IPU_PIX_FMT_YUV420P:
-	case IPU_PIX_FMT_YUV422P:
-	default:
-		return 1;
-	case IPU_PIX_FMT_RGB565:
-	case IPU_PIX_FMT_YUYV:
-	case IPU_PIX_FMT_UYVY:
-		return 2;
-	case IPU_PIX_FMT_BGR24:
-	case IPU_PIX_FMT_RGB24:
-		return 3;
-	case IPU_PIX_FMT_GENERIC_32:	/* generic data */
-	case IPU_PIX_FMT_BGR32:
-	case IPU_PIX_FMT_RGB32:
-	case IPU_PIX_FMT_ABGR32:
-		return 4;
-	}
-}
-
-/* Enable direct write to memory by the Camera Sensor Interface */
-static void ipu_ic_enable_task(struct ipu *ipu, enum ipu_channel channel)
-{
-	uint32_t ic_conf, mask;
-
-	switch (channel) {
-	case IDMAC_IC_0:
-		mask = IC_CONF_PRPENC_EN;
-		break;
-	case IDMAC_IC_7:
-		mask = IC_CONF_RWS_EN | IC_CONF_PRPENC_EN;
-		break;
-	default:
-		return;
-	}
-	ic_conf = idmac_read_icreg(ipu, IC_CONF) | mask;
-	idmac_write_icreg(ipu, ic_conf, IC_CONF);
-}
-
-/* Called under spin_lock_irqsave(&ipu_data.lock) */
-static void ipu_ic_disable_task(struct ipu *ipu, enum ipu_channel channel)
-{
-	uint32_t ic_conf, mask;
-
-	switch (channel) {
-	case IDMAC_IC_0:
-		mask = IC_CONF_PRPENC_EN;
-		break;
-	case IDMAC_IC_7:
-		mask = IC_CONF_RWS_EN | IC_CONF_PRPENC_EN;
-		break;
-	default:
-		return;
-	}
-	ic_conf = idmac_read_icreg(ipu, IC_CONF) & ~mask;
-	idmac_write_icreg(ipu, ic_conf, IC_CONF);
-}
-
-static uint32_t ipu_channel_status(struct ipu *ipu, enum ipu_channel channel)
-{
-	uint32_t stat = TASK_STAT_IDLE;
-	uint32_t task_stat_reg = idmac_read_ipureg(ipu, IPU_TASKS_STAT);
-
-	switch (channel) {
-	case IDMAC_IC_7:
-		stat = (task_stat_reg & TSTAT_CSI2MEM_MASK) >>
-			TSTAT_CSI2MEM_OFFSET;
-		break;
-	case IDMAC_IC_0:
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-	default:
-		break;
-	}
-	return stat;
-}
-
-struct chan_param_mem_planar {
-	/* Word 0 */
-	u32	xv:10;
-	u32	yv:10;
-	u32	xb:12;
-
-	u32	yb:12;
-	u32	res1:2;
-	u32	nsb:1;
-	u32	lnpb:6;
-	u32	ubo_l:11;
-
-	u32	ubo_h:15;
-	u32	vbo_l:17;
-
-	u32	vbo_h:9;
-	u32	res2:3;
-	u32	fw:12;
-	u32	fh_l:8;
-
-	u32	fh_h:4;
-	u32	res3:28;
-
-	/* Word 1 */
-	u32	eba0;
-
-	u32	eba1;
-
-	u32	bpp:3;
-	u32	sl:14;
-	u32	pfs:3;
-	u32	bam:3;
-	u32	res4:2;
-	u32	npb:6;
-	u32	res5:1;
-
-	u32	sat:2;
-	u32	res6:30;
-} __attribute__ ((packed));
-
-struct chan_param_mem_interleaved {
-	/* Word 0 */
-	u32	xv:10;
-	u32	yv:10;
-	u32	xb:12;
-
-	u32	yb:12;
-	u32	sce:1;
-	u32	res1:1;
-	u32	nsb:1;
-	u32	lnpb:6;
-	u32	sx:10;
-	u32	sy_l:1;
-
-	u32	sy_h:9;
-	u32	ns:10;
-	u32	sm:10;
-	u32	sdx_l:3;
-
-	u32	sdx_h:2;
-	u32	sdy:5;
-	u32	sdrx:1;
-	u32	sdry:1;
-	u32	sdr1:1;
-	u32	res2:2;
-	u32	fw:12;
-	u32	fh_l:8;
-
-	u32	fh_h:4;
-	u32	res3:28;
-
-	/* Word 1 */
-	u32	eba0;
-
-	u32	eba1;
-
-	u32	bpp:3;
-	u32	sl:14;
-	u32	pfs:3;
-	u32	bam:3;
-	u32	res4:2;
-	u32	npb:6;
-	u32	res5:1;
-
-	u32	sat:2;
-	u32	scc:1;
-	u32	ofs0:5;
-	u32	ofs1:5;
-	u32	ofs2:5;
-	u32	ofs3:5;
-	u32	wid0:3;
-	u32	wid1:3;
-	u32	wid2:3;
-
-	u32	wid3:3;
-	u32	dec_sel:1;
-	u32	res6:28;
-} __attribute__ ((packed));
-
-union chan_param_mem {
-	struct chan_param_mem_planar		pp;
-	struct chan_param_mem_interleaved	ip;
-};
-
-static void ipu_ch_param_set_plane_offset(union chan_param_mem *params,
-					  u32 u_offset, u32 v_offset)
-{
-	params->pp.ubo_l = u_offset & 0x7ff;
-	params->pp.ubo_h = u_offset >> 11;
-	params->pp.vbo_l = v_offset & 0x1ffff;
-	params->pp.vbo_h = v_offset >> 17;
-}
-
-static void ipu_ch_param_set_size(union chan_param_mem *params,
-				  uint32_t pixel_fmt, uint16_t width,
-				  uint16_t height, uint16_t stride)
-{
-	u32 u_offset;
-	u32 v_offset;
-
-	params->pp.fw		= width - 1;
-	params->pp.fh_l		= height - 1;
-	params->pp.fh_h		= (height - 1) >> 8;
-	params->pp.sl		= stride - 1;
-
-	switch (pixel_fmt) {
-	case IPU_PIX_FMT_GENERIC:
-		/*Represents 8-bit Generic data */
-		params->pp.bpp	= 3;
-		params->pp.pfs	= 7;
-		params->pp.npb	= 31;
-		params->pp.sat	= 2;		/* SAT = use 32-bit access */
-		break;
-	case IPU_PIX_FMT_GENERIC_32:
-		/*Represents 32-bit Generic data */
-		params->pp.bpp	= 0;
-		params->pp.pfs	= 7;
-		params->pp.npb	= 7;
-		params->pp.sat	= 2;		/* SAT = use 32-bit access */
-		break;
-	case IPU_PIX_FMT_RGB565:
-		params->ip.bpp	= 2;
-		params->ip.pfs	= 4;
-		params->ip.npb	= 15;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		params->ip.ofs0	= 0;		/* Red bit offset */
-		params->ip.ofs1	= 5;		/* Green bit offset */
-		params->ip.ofs2	= 11;		/* Blue bit offset */
-		params->ip.ofs3	= 16;		/* Alpha bit offset */
-		params->ip.wid0	= 4;		/* Red bit width - 1 */
-		params->ip.wid1	= 5;		/* Green bit width - 1 */
-		params->ip.wid2	= 4;		/* Blue bit width - 1 */
-		break;
-	case IPU_PIX_FMT_BGR24:
-		params->ip.bpp	= 1;		/* 24 BPP & RGB PFS */
-		params->ip.pfs	= 4;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		params->ip.ofs0	= 0;		/* Red bit offset */
-		params->ip.ofs1	= 8;		/* Green bit offset */
-		params->ip.ofs2	= 16;		/* Blue bit offset */
-		params->ip.ofs3	= 24;		/* Alpha bit offset */
-		params->ip.wid0	= 7;		/* Red bit width - 1 */
-		params->ip.wid1	= 7;		/* Green bit width - 1 */
-		params->ip.wid2	= 7;		/* Blue bit width - 1 */
-		break;
-	case IPU_PIX_FMT_RGB24:
-		params->ip.bpp	= 1;		/* 24 BPP & RGB PFS */
-		params->ip.pfs	= 4;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		params->ip.ofs0	= 16;		/* Red bit offset */
-		params->ip.ofs1	= 8;		/* Green bit offset */
-		params->ip.ofs2	= 0;		/* Blue bit offset */
-		params->ip.ofs3	= 24;		/* Alpha bit offset */
-		params->ip.wid0	= 7;		/* Red bit width - 1 */
-		params->ip.wid1	= 7;		/* Green bit width - 1 */
-		params->ip.wid2	= 7;		/* Blue bit width - 1 */
-		break;
-	case IPU_PIX_FMT_BGRA32:
-	case IPU_PIX_FMT_BGR32:
-	case IPU_PIX_FMT_ABGR32:
-		params->ip.bpp	= 0;
-		params->ip.pfs	= 4;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		params->ip.ofs0	= 8;		/* Red bit offset */
-		params->ip.ofs1	= 16;		/* Green bit offset */
-		params->ip.ofs2	= 24;		/* Blue bit offset */
-		params->ip.ofs3	= 0;		/* Alpha bit offset */
-		params->ip.wid0	= 7;		/* Red bit width - 1 */
-		params->ip.wid1	= 7;		/* Green bit width - 1 */
-		params->ip.wid2	= 7;		/* Blue bit width - 1 */
-		params->ip.wid3	= 7;		/* Alpha bit width - 1 */
-		break;
-	case IPU_PIX_FMT_RGBA32:
-	case IPU_PIX_FMT_RGB32:
-		params->ip.bpp	= 0;
-		params->ip.pfs	= 4;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		params->ip.ofs0	= 24;		/* Red bit offset */
-		params->ip.ofs1	= 16;		/* Green bit offset */
-		params->ip.ofs2	= 8;		/* Blue bit offset */
-		params->ip.ofs3	= 0;		/* Alpha bit offset */
-		params->ip.wid0	= 7;		/* Red bit width - 1 */
-		params->ip.wid1	= 7;		/* Green bit width - 1 */
-		params->ip.wid2	= 7;		/* Blue bit width - 1 */
-		params->ip.wid3	= 7;		/* Alpha bit width - 1 */
-		break;
-	case IPU_PIX_FMT_UYVY:
-		params->ip.bpp	= 2;
-		params->ip.pfs	= 6;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		break;
-	case IPU_PIX_FMT_YUV420P2:
-	case IPU_PIX_FMT_YUV420P:
-		params->ip.bpp	= 3;
-		params->ip.pfs	= 3;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		u_offset = stride * height;
-		v_offset = u_offset + u_offset / 4;
-		ipu_ch_param_set_plane_offset(params, u_offset, v_offset);
-		break;
-	case IPU_PIX_FMT_YVU422P:
-		params->ip.bpp	= 3;
-		params->ip.pfs	= 2;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		v_offset = stride * height;
-		u_offset = v_offset + v_offset / 2;
-		ipu_ch_param_set_plane_offset(params, u_offset, v_offset);
-		break;
-	case IPU_PIX_FMT_YUV422P:
-		params->ip.bpp	= 3;
-		params->ip.pfs	= 2;
-		params->ip.npb	= 7;
-		params->ip.sat	= 2;		/* SAT = 32-bit access */
-		u_offset = stride * height;
-		v_offset = u_offset + u_offset / 2;
-		ipu_ch_param_set_plane_offset(params, u_offset, v_offset);
-		break;
-	default:
-		dev_err(ipu_data.dev,
-			"mx3 ipu: unimplemented pixel format %d\n", pixel_fmt);
-		break;
-	}
-
-	params->pp.nsb = 1;
-}
-
-static void ipu_ch_param_set_buffer(union chan_param_mem *params,
-				    dma_addr_t buf0, dma_addr_t buf1)
-{
-	params->pp.eba0 = buf0;
-	params->pp.eba1 = buf1;
-}
-
-static void ipu_ch_param_set_rotation(union chan_param_mem *params,
-				      enum ipu_rotate_mode rotate)
-{
-	params->pp.bam = rotate;
-}
-
-static void ipu_write_param_mem(uint32_t addr, uint32_t *data,
-				uint32_t num_words)
-{
-	for (; num_words > 0; num_words--) {
-		dev_dbg(ipu_data.dev,
-			"write param mem - addr = 0x%08X, data = 0x%08X\n",
-			addr, *data);
-		idmac_write_ipureg(&ipu_data, addr, IPU_IMA_ADDR);
-		idmac_write_ipureg(&ipu_data, *data++, IPU_IMA_DATA);
-		addr++;
-		if ((addr & 0x7) == 5) {
-			addr &= ~0x7;	/* set to word 0 */
-			addr += 8;	/* increment to next row */
-		}
-	}
-}
-
-static int calc_resize_coeffs(uint32_t in_size, uint32_t out_size,
-			      uint32_t *resize_coeff,
-			      uint32_t *downsize_coeff)
-{
-	uint32_t temp_size;
-	uint32_t temp_downsize;
-
-	*resize_coeff	= 1 << 13;
-	*downsize_coeff	= 1 << 13;
-
-	/* Cannot downsize more than 8:1 */
-	if (out_size << 3 < in_size)
-		return -EINVAL;
-
-	/* compute downsizing coefficient */
-	temp_downsize = 0;
-	temp_size = in_size;
-	while (temp_size >= out_size * 2 && temp_downsize < 2) {
-		temp_size >>= 1;
-		temp_downsize++;
-	}
-	*downsize_coeff = temp_downsize;
-
-	/*
-	 * compute resizing coefficient using the following formula:
-	 * resize_coeff = M*(SI -1)/(SO - 1)
-	 * where M = 2^13, SI - input size, SO - output size
-	 */
-	*resize_coeff = (8192L * (temp_size - 1)) / (out_size - 1);
-	if (*resize_coeff >= 16384L) {
-		dev_err(ipu_data.dev, "Warning! Overflow on resize coeff.\n");
-		*resize_coeff = 0x3FFF;
-	}
-
-	dev_dbg(ipu_data.dev, "resizing from %u -> %u pixels, "
-		"downsize=%u, resize=%u.%lu (reg=%u)\n", in_size, out_size,
-		*downsize_coeff, *resize_coeff >= 8192L ? 1 : 0,
-		((*resize_coeff & 0x1FFF) * 10000L) / 8192L, *resize_coeff);
-
-	return 0;
-}
-
-static enum ipu_color_space format_to_colorspace(enum pixel_fmt fmt)
-{
-	switch (fmt) {
-	case IPU_PIX_FMT_RGB565:
-	case IPU_PIX_FMT_BGR24:
-	case IPU_PIX_FMT_RGB24:
-	case IPU_PIX_FMT_BGR32:
-	case IPU_PIX_FMT_RGB32:
-		return IPU_COLORSPACE_RGB;
-	default:
-		return IPU_COLORSPACE_YCBCR;
-	}
-}
-
-static int ipu_ic_init_prpenc(struct ipu *ipu,
-			      union ipu_channel_param *params, bool src_is_csi)
-{
-	uint32_t reg, ic_conf;
-	uint32_t downsize_coeff, resize_coeff;
-	enum ipu_color_space in_fmt, out_fmt;
-
-	/* Setup vertical resizing */
-	calc_resize_coeffs(params->video.in_height,
-			    params->video.out_height,
-			    &resize_coeff, &downsize_coeff);
-	reg = (downsize_coeff << 30) | (resize_coeff << 16);
-
-	/* Setup horizontal resizing */
-	calc_resize_coeffs(params->video.in_width,
-			    params->video.out_width,
-			    &resize_coeff, &downsize_coeff);
-	reg |= (downsize_coeff << 14) | resize_coeff;
-
-	/* Setup color space conversion */
-	in_fmt = format_to_colorspace(params->video.in_pixel_fmt);
-	out_fmt = format_to_colorspace(params->video.out_pixel_fmt);
-
-	/*
-	 * Colourspace conversion unsupported yet - see _init_csc() in
-	 * Freescale sources
-	 */
-	if (in_fmt != out_fmt) {
-		dev_err(ipu->dev, "Colourspace conversion unsupported!\n");
-		return -EOPNOTSUPP;
-	}
-
-	idmac_write_icreg(ipu, reg, IC_PRP_ENC_RSC);
-
-	ic_conf = idmac_read_icreg(ipu, IC_CONF);
-
-	if (src_is_csi)
-		ic_conf &= ~IC_CONF_RWS_EN;
-	else
-		ic_conf |= IC_CONF_RWS_EN;
-
-	idmac_write_icreg(ipu, ic_conf, IC_CONF);
-
-	return 0;
-}
-
-static uint32_t dma_param_addr(uint32_t dma_ch)
-{
-	/* Channel Parameter Memory */
-	return 0x10000 | (dma_ch << 4);
-}
-
-static void ipu_channel_set_priority(struct ipu *ipu, enum ipu_channel channel,
-				     bool prio)
-{
-	u32 reg = idmac_read_icreg(ipu, IDMAC_CHA_PRI);
-
-	if (prio)
-		reg |= 1UL << channel;
-	else
-		reg &= ~(1UL << channel);
-
-	idmac_write_icreg(ipu, reg, IDMAC_CHA_PRI);
-
-	dump_idmac_reg(ipu);
-}
-
-static uint32_t ipu_channel_conf_mask(enum ipu_channel channel)
-{
-	uint32_t mask;
-
-	switch (channel) {
-	case IDMAC_IC_0:
-	case IDMAC_IC_7:
-		mask = IPU_CONF_CSI_EN | IPU_CONF_IC_EN;
-		break;
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-		mask = IPU_CONF_SDC_EN | IPU_CONF_DI_EN;
-		break;
-	default:
-		mask = 0;
-		break;
-	}
-
-	return mask;
-}
-
-/**
- * ipu_enable_channel() - enable an IPU channel.
- * @idmac:	IPU DMAC context.
- * @ichan:	IDMAC channel.
- * @return:	0 on success or negative error code on failure.
- */
-static int ipu_enable_channel(struct idmac *idmac, struct idmac_channel *ichan)
-{
-	struct ipu *ipu = to_ipu(idmac);
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	uint32_t reg;
-	unsigned long flags;
-
-	spin_lock_irqsave(&ipu->lock, flags);
-
-	/* Reset to buffer 0 */
-	idmac_write_ipureg(ipu, 1UL << channel, IPU_CHA_CUR_BUF);
-	ichan->active_buffer = 0;
-	ichan->status = IPU_CHANNEL_ENABLED;
-
-	switch (channel) {
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-	case IDMAC_IC_7:
-		ipu_channel_set_priority(ipu, channel, true);
-		break;
-	default:
-		break;
-	}
-
-	reg = idmac_read_icreg(ipu, IDMAC_CHA_EN);
-
-	idmac_write_icreg(ipu, reg | (1UL << channel), IDMAC_CHA_EN);
-
-	ipu_ic_enable_task(ipu, channel);
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-	return 0;
-}
-
-/**
- * ipu_init_channel_buffer() - initialize a buffer for logical IPU channel.
- * @ichan:	IDMAC channel.
- * @pixel_fmt:	pixel format of buffer. Pixel format is a FOURCC ASCII code.
- * @width:	width of buffer in pixels.
- * @height:	height of buffer in pixels.
- * @stride:	stride length of buffer in pixels.
- * @rot_mode:	rotation mode of buffer. A rotation setting other than
- *		IPU_ROTATE_VERT_FLIP should only be used for input buffers of
- *		rotation channels.
- * @phyaddr_0:	buffer 0 physical address.
- * @phyaddr_1:	buffer 1 physical address. Setting this to a value other than
- *		NULL enables double buffering mode.
- * @return:	0 on success or negative error code on failure.
- */
-static int ipu_init_channel_buffer(struct idmac_channel *ichan,
-				   enum pixel_fmt pixel_fmt,
-				   uint16_t width, uint16_t height,
-				   uint32_t stride,
-				   enum ipu_rotate_mode rot_mode,
-				   dma_addr_t phyaddr_0, dma_addr_t phyaddr_1)
-{
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	struct idmac *idmac = to_idmac(ichan->dma_chan.device);
-	struct ipu *ipu = to_ipu(idmac);
-	union chan_param_mem params = {};
-	unsigned long flags;
-	uint32_t reg;
-	uint32_t stride_bytes;
-
-	stride_bytes = stride * bytes_per_pixel(pixel_fmt);
-
-	if (stride_bytes % 4) {
-		dev_err(ipu->dev,
-			"Stride length must be 32-bit aligned, stride = %d, bytes = %d\n",
-			stride, stride_bytes);
-		return -EINVAL;
-	}
-
-	/* IC channel's stride must be a multiple of 8 pixels */
-	if ((channel <= IDMAC_IC_13) && (stride % 8)) {
-		dev_err(ipu->dev, "Stride must be 8 pixel multiple\n");
-		return -EINVAL;
-	}
-
-	/* Build parameter memory data for DMA channel */
-	ipu_ch_param_set_size(&params, pixel_fmt, width, height, stride_bytes);
-	ipu_ch_param_set_buffer(&params, phyaddr_0, phyaddr_1);
-	ipu_ch_param_set_rotation(&params, rot_mode);
-
-	spin_lock_irqsave(&ipu->lock, flags);
-
-	ipu_write_param_mem(dma_param_addr(channel), (uint32_t *)&params, 10);
-
-	reg = idmac_read_ipureg(ipu, IPU_CHA_DB_MODE_SEL);
-
-	if (phyaddr_1)
-		reg |= 1UL << channel;
-	else
-		reg &= ~(1UL << channel);
-
-	idmac_write_ipureg(ipu, reg, IPU_CHA_DB_MODE_SEL);
-
-	ichan->status = IPU_CHANNEL_READY;
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	return 0;
-}
-
-/**
- * ipu_select_buffer() - mark a channel's buffer as ready.
- * @channel:	channel ID.
- * @buffer_n:	buffer number to mark ready.
- */
-static void ipu_select_buffer(enum ipu_channel channel, int buffer_n)
-{
-	/* No locking - this is a write-one-to-set register, cleared by IPU */
-	if (buffer_n == 0)
-		/* Mark buffer 0 as ready. */
-		idmac_write_ipureg(&ipu_data, 1UL << channel, IPU_CHA_BUF0_RDY);
-	else
-		/* Mark buffer 1 as ready. */
-		idmac_write_ipureg(&ipu_data, 1UL << channel, IPU_CHA_BUF1_RDY);
-}
-
-/**
- * ipu_update_channel_buffer() - update physical address of a channel buffer.
- * @ichan:	IDMAC channel.
- * @buffer_n:	buffer number to update.
- *		0 or 1 are the only valid values.
- * @phyaddr:	buffer physical address.
- */
-/* Called under spin_lock(_irqsave)(&ichan->lock) */
-static void ipu_update_channel_buffer(struct idmac_channel *ichan,
-				      int buffer_n, dma_addr_t phyaddr)
-{
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	uint32_t reg;
-	unsigned long flags;
-
-	spin_lock_irqsave(&ipu_data.lock, flags);
-
-	if (buffer_n == 0) {
-		reg = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF0_RDY);
-		if (reg & (1UL << channel)) {
-			ipu_ic_disable_task(&ipu_data, channel);
-			ichan->status = IPU_CHANNEL_READY;
-		}
-
-		/* 44.3.3.1.9 - Row Number 1 (WORD1, offset 0) */
-		idmac_write_ipureg(&ipu_data, dma_param_addr(channel) +
-				   0x0008UL, IPU_IMA_ADDR);
-		idmac_write_ipureg(&ipu_data, phyaddr, IPU_IMA_DATA);
-	} else {
-		reg = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF1_RDY);
-		if (reg & (1UL << channel)) {
-			ipu_ic_disable_task(&ipu_data, channel);
-			ichan->status = IPU_CHANNEL_READY;
-		}
-
-		/* Check if double-buffering is already enabled */
-		reg = idmac_read_ipureg(&ipu_data, IPU_CHA_DB_MODE_SEL);
-
-		if (!(reg & (1UL << channel)))
-			idmac_write_ipureg(&ipu_data, reg | (1UL << channel),
-					   IPU_CHA_DB_MODE_SEL);
-
-		/* 44.3.3.1.9 - Row Number 1 (WORD1, offset 1) */
-		idmac_write_ipureg(&ipu_data, dma_param_addr(channel) +
-				   0x0009UL, IPU_IMA_ADDR);
-		idmac_write_ipureg(&ipu_data, phyaddr, IPU_IMA_DATA);
-	}
-
-	spin_unlock_irqrestore(&ipu_data.lock, flags);
-}
-
-/* Called under spin_lock_irqsave(&ichan->lock) */
-static int ipu_submit_buffer(struct idmac_channel *ichan,
-	struct idmac_tx_desc *desc, struct scatterlist *sg, int buf_idx)
-{
-	unsigned int chan_id = ichan->dma_chan.chan_id;
-	struct device *dev = &ichan->dma_chan.dev->device;
-
-	if (async_tx_test_ack(&desc->txd))
-		return -EINTR;
-
-	/*
-	 * On first invocation this shouldn't be necessary, the call to
-	 * ipu_init_channel_buffer() above will set addresses for us, so we
-	 * could make it conditional on status >= IPU_CHANNEL_ENABLED, but
-	 * doing it again shouldn't hurt either.
-	 */
-	ipu_update_channel_buffer(ichan, buf_idx, sg_dma_address(sg));
-
-	ipu_select_buffer(chan_id, buf_idx);
-	dev_dbg(dev, "Updated sg %p on channel 0x%x buffer %d\n",
-		sg, chan_id, buf_idx);
-
-	return 0;
-}
-
-/* Called under spin_lock_irqsave(&ichan->lock) */
-static int ipu_submit_channel_buffers(struct idmac_channel *ichan,
-				      struct idmac_tx_desc *desc)
-{
-	struct scatterlist *sg;
-	int i, ret = 0;
-
-	for (i = 0, sg = desc->sg; i < 2 && sg; i++) {
-		if (!ichan->sg[i]) {
-			ichan->sg[i] = sg;
-
-			ret = ipu_submit_buffer(ichan, desc, sg, i);
-			if (ret < 0)
-				return ret;
-
-			sg = sg_next(sg);
-		}
-	}
-
-	return ret;
-}
-
-static dma_cookie_t idmac_tx_submit(struct dma_async_tx_descriptor *tx)
-{
-	struct idmac_tx_desc *desc = to_tx_desc(tx);
-	struct idmac_channel *ichan = to_idmac_chan(tx->chan);
-	struct idmac *idmac = to_idmac(tx->chan->device);
-	struct ipu *ipu = to_ipu(idmac);
-	struct device *dev = &ichan->dma_chan.dev->device;
-	dma_cookie_t cookie;
-	unsigned long flags;
-	int ret;
-
-	/* Sanity check */
-	if (!list_empty(&desc->list)) {
-		/* The descriptor doesn't belong to client */
-		dev_err(dev, "Descriptor %p not prepared!\n", tx);
-		return -EBUSY;
-	}
-
-	mutex_lock(&ichan->chan_mutex);
-
-	async_tx_clear_ack(tx);
-
-	if (ichan->status < IPU_CHANNEL_READY) {
-		struct idmac_video_param *video = &ichan->params.video;
-		/*
-		 * Initial buffer assignment - the first two sg-entries from
-		 * the descriptor will end up in the IDMAC buffers
-		 */
-		dma_addr_t dma_1 = sg_is_last(desc->sg) ? 0 :
-			sg_dma_address(&desc->sg[1]);
-
-		WARN_ON(ichan->sg[0] || ichan->sg[1]);
-
-		cookie = ipu_init_channel_buffer(ichan,
-						 video->out_pixel_fmt,
-						 video->out_width,
-						 video->out_height,
-						 video->out_stride,
-						 IPU_ROTATE_NONE,
-						 sg_dma_address(&desc->sg[0]),
-						 dma_1);
-		if (cookie < 0)
-			goto out;
-	}
-
-	dev_dbg(dev, "Submitting sg %p\n", &desc->sg[0]);
-
-	cookie = dma_cookie_assign(tx);
-
-	/* ipu->lock can be taken under ichan->lock, but not v.v. */
-	spin_lock_irqsave(&ichan->lock, flags);
-
-	list_add_tail(&desc->list, &ichan->queue);
-	/* submit_buffers() atomically verifies and fills empty sg slots */
-	ret = ipu_submit_channel_buffers(ichan, desc);
-
-	spin_unlock_irqrestore(&ichan->lock, flags);
-
-	if (ret < 0) {
-		cookie = ret;
-		goto dequeue;
-	}
-
-	if (ichan->status < IPU_CHANNEL_ENABLED) {
-		ret = ipu_enable_channel(idmac, ichan);
-		if (ret < 0) {
-			cookie = ret;
-			goto dequeue;
-		}
-	}
-
-	dump_idmac_reg(ipu);
-
-dequeue:
-	if (cookie < 0) {
-		spin_lock_irqsave(&ichan->lock, flags);
-		list_del_init(&desc->list);
-		spin_unlock_irqrestore(&ichan->lock, flags);
-		tx->cookie = cookie;
-		ichan->dma_chan.cookie = cookie;
-	}
-
-out:
-	mutex_unlock(&ichan->chan_mutex);
-
-	return cookie;
-}
-
-/* Called with ichan->chan_mutex held */
-static int idmac_desc_alloc(struct idmac_channel *ichan, int n)
-{
-	struct idmac_tx_desc *desc =
-		vmalloc(array_size(n, sizeof(struct idmac_tx_desc)));
-	struct idmac *idmac = to_idmac(ichan->dma_chan.device);
-
-	if (!desc)
-		return -ENOMEM;
-
-	/* No interrupts, just disable the tasklet for a moment */
-	tasklet_disable(&to_ipu(idmac)->tasklet);
-
-	ichan->n_tx_desc = n;
-	ichan->desc = desc;
-	INIT_LIST_HEAD(&ichan->queue);
-	INIT_LIST_HEAD(&ichan->free_list);
-
-	while (n--) {
-		struct dma_async_tx_descriptor *txd = &desc->txd;
-
-		memset(txd, 0, sizeof(*txd));
-		dma_async_tx_descriptor_init(txd, &ichan->dma_chan);
-		txd->tx_submit		= idmac_tx_submit;
-
-		list_add(&desc->list, &ichan->free_list);
-
-		desc++;
-	}
-
-	tasklet_enable(&to_ipu(idmac)->tasklet);
-
-	return 0;
-}
-
-/**
- * ipu_init_channel() - initialize an IPU channel.
- * @idmac:	IPU DMAC context.
- * @ichan:	pointer to the channel object.
- * @return      0 on success or negative error code on failure.
- */
-static int ipu_init_channel(struct idmac *idmac, struct idmac_channel *ichan)
-{
-	union ipu_channel_param *params = &ichan->params;
-	uint32_t ipu_conf;
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	unsigned long flags;
-	uint32_t reg;
-	struct ipu *ipu = to_ipu(idmac);
-	int ret = 0, n_desc = 0;
-
-	dev_dbg(ipu->dev, "init channel = %d\n", channel);
-
-	if (channel != IDMAC_SDC_0 && channel != IDMAC_SDC_1 &&
-	    channel != IDMAC_IC_7)
-		return -EINVAL;
-
-	spin_lock_irqsave(&ipu->lock, flags);
-
-	switch (channel) {
-	case IDMAC_IC_7:
-		n_desc = 16;
-		reg = idmac_read_icreg(ipu, IC_CONF);
-		idmac_write_icreg(ipu, reg & ~IC_CONF_CSI_MEM_WR_EN, IC_CONF);
-		break;
-	case IDMAC_IC_0:
-		n_desc = 16;
-		reg = idmac_read_ipureg(ipu, IPU_FS_PROC_FLOW);
-		idmac_write_ipureg(ipu, reg & ~FS_ENC_IN_VALID, IPU_FS_PROC_FLOW);
-		ret = ipu_ic_init_prpenc(ipu, params, true);
-		break;
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-		n_desc = 4;
-		break;
-	default:
-		break;
-	}
-
-	ipu->channel_init_mask |= 1L << channel;
-
-	/* Enable IPU sub module */
-	ipu_conf = idmac_read_ipureg(ipu, IPU_CONF) |
-		ipu_channel_conf_mask(channel);
-	idmac_write_ipureg(ipu, ipu_conf, IPU_CONF);
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	if (n_desc && !ichan->desc)
-		ret = idmac_desc_alloc(ichan, n_desc);
-
-	dump_idmac_reg(ipu);
-
-	return ret;
-}
-
-/**
- * ipu_uninit_channel() - uninitialize an IPU channel.
- * @idmac:	IPU DMAC context.
- * @ichan:	pointer to the channel object.
- */
-static void ipu_uninit_channel(struct idmac *idmac, struct idmac_channel *ichan)
-{
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	unsigned long flags;
-	uint32_t reg;
-	unsigned long chan_mask = 1UL << channel;
-	uint32_t ipu_conf;
-	struct ipu *ipu = to_ipu(idmac);
-
-	spin_lock_irqsave(&ipu->lock, flags);
-
-	if (!(ipu->channel_init_mask & chan_mask)) {
-		dev_err(ipu->dev, "Channel already uninitialized %d\n",
-			channel);
-		spin_unlock_irqrestore(&ipu->lock, flags);
-		return;
-	}
-
-	/* Reset the double buffer */
-	reg = idmac_read_ipureg(ipu, IPU_CHA_DB_MODE_SEL);
-	idmac_write_ipureg(ipu, reg & ~chan_mask, IPU_CHA_DB_MODE_SEL);
-
-	ichan->sec_chan_en = false;
-
-	switch (channel) {
-	case IDMAC_IC_7:
-		reg = idmac_read_icreg(ipu, IC_CONF);
-		idmac_write_icreg(ipu, reg & ~(IC_CONF_RWS_EN | IC_CONF_PRPENC_EN),
-			     IC_CONF);
-		break;
-	case IDMAC_IC_0:
-		reg = idmac_read_icreg(ipu, IC_CONF);
-		idmac_write_icreg(ipu, reg & ~(IC_CONF_PRPENC_EN | IC_CONF_PRPENC_CSC1),
-				  IC_CONF);
-		break;
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-	default:
-		break;
-	}
-
-	ipu->channel_init_mask &= ~(1L << channel);
-
-	ipu_conf = idmac_read_ipureg(ipu, IPU_CONF) &
-		~ipu_channel_conf_mask(channel);
-	idmac_write_ipureg(ipu, ipu_conf, IPU_CONF);
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	ichan->n_tx_desc = 0;
-	vfree(ichan->desc);
-	ichan->desc = NULL;
-}
-
-/**
- * ipu_disable_channel() - disable an IPU channel.
- * @idmac:		IPU DMAC context.
- * @ichan:		channel object pointer.
- * @wait_for_stop:	flag to set whether to wait for channel end of frame or
- *			return immediately.
- * @return:		0 on success or negative error code on failure.
- */
-static int ipu_disable_channel(struct idmac *idmac, struct idmac_channel *ichan,
-			       bool wait_for_stop)
-{
-	enum ipu_channel channel = ichan->dma_chan.chan_id;
-	struct ipu *ipu = to_ipu(idmac);
-	uint32_t reg;
-	unsigned long flags;
-	unsigned long chan_mask = 1UL << channel;
-	unsigned int timeout;
-
-	if (wait_for_stop && channel != IDMAC_SDC_1 && channel != IDMAC_SDC_0) {
-		timeout = 40;
-		/* This waiting always fails. Related to spurious irq problem */
-		while ((idmac_read_icreg(ipu, IDMAC_CHA_BUSY) & chan_mask) ||
-		       (ipu_channel_status(ipu, channel) == TASK_STAT_ACTIVE)) {
-			timeout--;
-			msleep(10);
-
-			if (!timeout) {
-				dev_dbg(ipu->dev,
-					"Warning: timeout waiting for channel %u to "
-					"stop: buf0_rdy = 0x%08X, buf1_rdy = 0x%08X, "
-					"busy = 0x%08X, tstat = 0x%08X\n", channel,
-					idmac_read_ipureg(ipu, IPU_CHA_BUF0_RDY),
-					idmac_read_ipureg(ipu, IPU_CHA_BUF1_RDY),
-					idmac_read_icreg(ipu, IDMAC_CHA_BUSY),
-					idmac_read_ipureg(ipu, IPU_TASKS_STAT));
-				break;
-			}
-		}
-		dev_dbg(ipu->dev, "timeout = %d * 10ms\n", 40 - timeout);
-	}
-	/* SDC BG and FG must be disabled before DMA is disabled */
-	if (wait_for_stop && (channel == IDMAC_SDC_0 ||
-			      channel == IDMAC_SDC_1)) {
-		for (timeout = 5;
-		     timeout && !ipu_irq_status(ichan->eof_irq); timeout--)
-			msleep(5);
-	}
-
-	spin_lock_irqsave(&ipu->lock, flags);
-
-	/* Disable IC task */
-	ipu_ic_disable_task(ipu, channel);
-
-	/* Disable DMA channel(s) */
-	reg = idmac_read_icreg(ipu, IDMAC_CHA_EN);
-	idmac_write_icreg(ipu, reg & ~chan_mask, IDMAC_CHA_EN);
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	return 0;
-}
-
-static struct scatterlist *idmac_sg_next(struct idmac_channel *ichan,
-	struct idmac_tx_desc **desc, struct scatterlist *sg)
-{
-	struct scatterlist *sgnew = sg ? sg_next(sg) : NULL;
-
-	if (sgnew)
-		/* next sg-element in this list */
-		return sgnew;
-
-	if ((*desc)->list.next == &ichan->queue)
-		/* No more descriptors on the queue */
-		return NULL;
-
-	/* Fetch next descriptor */
-	*desc = list_entry((*desc)->list.next, struct idmac_tx_desc, list);
-	return (*desc)->sg;
-}
-
-/*
- * We have several possibilities here:
- * current BUF		next BUF
- *
- * not last sg		next not last sg
- * not last sg		next last sg
- * last sg		first sg from next descriptor
- * last sg		NULL
- *
- * Besides, the descriptor queue might be empty or not. We process all these
- * cases carefully.
- */
-static irqreturn_t idmac_interrupt(int irq, void *dev_id)
-{
-	struct idmac_channel *ichan = dev_id;
-	struct device *dev = &ichan->dma_chan.dev->device;
-	unsigned int chan_id = ichan->dma_chan.chan_id;
-	struct scatterlist **sg, *sgnext, *sgnew = NULL;
-	/* Next transfer descriptor */
-	struct idmac_tx_desc *desc, *descnew;
-	bool done = false;
-	u32 ready0, ready1, curbuf, err;
-	struct dmaengine_desc_callback cb;
-
-	/* IDMAC has cleared the respective BUFx_RDY bit, we manage the buffer */
-
-	dev_dbg(dev, "IDMAC irq %d, buf %d\n", irq, ichan->active_buffer);
-
-	spin_lock(&ipu_data.lock);
-
-	ready0	= idmac_read_ipureg(&ipu_data, IPU_CHA_BUF0_RDY);
-	ready1	= idmac_read_ipureg(&ipu_data, IPU_CHA_BUF1_RDY);
-	curbuf	= idmac_read_ipureg(&ipu_data, IPU_CHA_CUR_BUF);
-	err	= idmac_read_ipureg(&ipu_data, IPU_INT_STAT_4);
-
-	if (err & (1 << chan_id)) {
-		idmac_write_ipureg(&ipu_data, 1 << chan_id, IPU_INT_STAT_4);
-		spin_unlock(&ipu_data.lock);
-		/*
-		 * Doing this
-		 * ichan->sg[0] = ichan->sg[1] = NULL;
-		 * you can force channel re-enable on the next tx_submit(), but
-		 * this is dirty - think about descriptors with multiple
-		 * sg elements.
-		 */
-		dev_warn(dev, "NFB4EOF on channel %d, ready %x, %x, cur %x\n",
-			 chan_id, ready0, ready1, curbuf);
-		return IRQ_HANDLED;
-	}
-	spin_unlock(&ipu_data.lock);
-
-	/* Other interrupts do not interfere with this channel */
-	spin_lock(&ichan->lock);
-	if (unlikely((ichan->active_buffer && (ready1 >> chan_id) & 1) ||
-		     (!ichan->active_buffer && (ready0 >> chan_id) & 1)
-		     )) {
-		spin_unlock(&ichan->lock);
-		dev_dbg(dev,
-			"IRQ with active buffer still ready on channel %x, "
-			"active %d, ready %x, %x!\n", chan_id,
-			ichan->active_buffer, ready0, ready1);
-		return IRQ_NONE;
-	}
-
-	if (unlikely(list_empty(&ichan->queue))) {
-		ichan->sg[ichan->active_buffer] = NULL;
-		spin_unlock(&ichan->lock);
-		dev_err(dev,
-			"IRQ without queued buffers on channel %x, active %d, "
-			"ready %x, %x!\n", chan_id,
-			ichan->active_buffer, ready0, ready1);
-		return IRQ_NONE;
-	}
-
-	/*
-	 * active_buffer is a software flag, it shows which buffer we are
-	 * currently expecting back from the hardware, IDMAC should be
-	 * processing the other buffer already
-	 */
-	sg = &ichan->sg[ichan->active_buffer];
-	sgnext = ichan->sg[!ichan->active_buffer];
-
-	if (!*sg) {
-		spin_unlock(&ichan->lock);
-		return IRQ_HANDLED;
-	}
-
-	desc = list_entry(ichan->queue.next, struct idmac_tx_desc, list);
-	descnew = desc;
-
-	dev_dbg(dev, "IDMAC irq %d, dma %#llx, next dma %#llx, current %d, curbuf %#x\n",
-		irq, (u64)sg_dma_address(*sg),
-		sgnext ? (u64)sg_dma_address(sgnext) : 0,
-		ichan->active_buffer, curbuf);
-
-	/* Find the descriptor of sgnext */
-	sgnew = idmac_sg_next(ichan, &descnew, *sg);
-	if (sgnext != sgnew)
-		dev_err(dev, "Submitted buffer %p, next buffer %p\n", sgnext, sgnew);
-
-	/*
-	 * if sgnext == NULL sg must be the last element in a scatterlist and
-	 * queue must be empty
-	 */
-	if (unlikely(!sgnext)) {
-		if (!WARN_ON(sg_next(*sg)))
-			dev_dbg(dev, "Underrun on channel %x\n", chan_id);
-		ichan->sg[!ichan->active_buffer] = sgnew;
-
-		if (unlikely(sgnew)) {
-			ipu_submit_buffer(ichan, descnew, sgnew, !ichan->active_buffer);
-		} else {
-			spin_lock(&ipu_data.lock);
-			ipu_ic_disable_task(&ipu_data, chan_id);
-			spin_unlock(&ipu_data.lock);
-			ichan->status = IPU_CHANNEL_READY;
-			/* Continue to check for complete descriptor */
-		}
-	}
-
-	/* Calculate and submit the next sg element */
-	sgnew = idmac_sg_next(ichan, &descnew, sgnew);
-
-	if (unlikely(!sg_next(*sg)) || !sgnext) {
-		/*
-		 * Last element in scatterlist done, remove from the queue,
-		 * _init for debugging
-		 */
-		list_del_init(&desc->list);
-		done = true;
-	}
-
-	*sg = sgnew;
-
-	if (likely(sgnew) &&
-	    ipu_submit_buffer(ichan, descnew, sgnew, ichan->active_buffer) < 0) {
-		dmaengine_desc_get_callback(&descnew->txd, &cb);
-
-		list_del_init(&descnew->list);
-		spin_unlock(&ichan->lock);
-
-		dmaengine_desc_callback_invoke(&cb, NULL);
-		spin_lock(&ichan->lock);
-	}
-
-	/* Flip the active buffer - even if update above failed */
-	ichan->active_buffer = !ichan->active_buffer;
-	if (done)
-		dma_cookie_complete(&desc->txd);
-
-	dmaengine_desc_get_callback(&desc->txd, &cb);
-
-	spin_unlock(&ichan->lock);
-
-	if (done && (desc->txd.flags & DMA_PREP_INTERRUPT))
-		dmaengine_desc_callback_invoke(&cb, NULL);
-
-	return IRQ_HANDLED;
-}
-
-static void ipu_gc_tasklet(struct tasklet_struct *t)
-{
-	struct ipu *ipu = from_tasklet(ipu, t, tasklet);
-	int i;
-
-	for (i = 0; i < IPU_CHANNELS_NUM; i++) {
-		struct idmac_channel *ichan = ipu->channel + i;
-		struct idmac_tx_desc *desc;
-		unsigned long flags;
-		struct scatterlist *sg;
-		int j, k;
-
-		for (j = 0; j < ichan->n_tx_desc; j++) {
-			desc = ichan->desc + j;
-			spin_lock_irqsave(&ichan->lock, flags);
-			if (async_tx_test_ack(&desc->txd)) {
-				list_move(&desc->list, &ichan->free_list);
-				for_each_sg(desc->sg, sg, desc->sg_len, k) {
-					if (ichan->sg[0] == sg)
-						ichan->sg[0] = NULL;
-					else if (ichan->sg[1] == sg)
-						ichan->sg[1] = NULL;
-				}
-				async_tx_clear_ack(&desc->txd);
-			}
-			spin_unlock_irqrestore(&ichan->lock, flags);
-		}
-	}
-}
-
-/* Allocate and initialise a transfer descriptor. */
-static struct dma_async_tx_descriptor *idmac_prep_slave_sg(struct dma_chan *chan,
-		struct scatterlist *sgl, unsigned int sg_len,
-		enum dma_transfer_direction direction, unsigned long tx_flags,
-		void *context)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac_tx_desc *desc = NULL;
-	struct dma_async_tx_descriptor *txd = NULL;
-	unsigned long flags;
-
-	/* We only can handle these three channels so far */
-	if (chan->chan_id != IDMAC_SDC_0 && chan->chan_id != IDMAC_SDC_1 &&
-	    chan->chan_id != IDMAC_IC_7)
-		return NULL;
-
-	if (!is_slave_direction(direction)) {
-		dev_err(chan->device->dev, "Invalid DMA direction %d!\n", direction);
-		return NULL;
-	}
-
-	mutex_lock(&ichan->chan_mutex);
-
-	spin_lock_irqsave(&ichan->lock, flags);
-	if (!list_empty(&ichan->free_list)) {
-		desc = list_entry(ichan->free_list.next,
-				  struct idmac_tx_desc, list);
-
-		list_del_init(&desc->list);
-
-		desc->sg_len	= sg_len;
-		desc->sg	= sgl;
-		txd		= &desc->txd;
-		txd->flags	= tx_flags;
-	}
-	spin_unlock_irqrestore(&ichan->lock, flags);
-
-	mutex_unlock(&ichan->chan_mutex);
-
-	tasklet_schedule(&to_ipu(to_idmac(chan->device))->tasklet);
-
-	return txd;
-}
-
-/* Re-select the current buffer and re-activate the channel */
-static void idmac_issue_pending(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac *idmac = to_idmac(chan->device);
-	struct ipu *ipu = to_ipu(idmac);
-	unsigned long flags;
-
-	/* This is not always needed, but doesn't hurt either */
-	spin_lock_irqsave(&ipu->lock, flags);
-	ipu_select_buffer(chan->chan_id, ichan->active_buffer);
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	/*
-	 * Might need to perform some parts of initialisation from
-	 * ipu_enable_channel(), but not all, we do not want to reset to buffer
-	 * 0, don't need to set priority again either, but re-enabling the task
-	 * and the channel might be a good idea.
-	 */
-}
-
-static int idmac_pause(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac *idmac = to_idmac(chan->device);
-	struct ipu *ipu = to_ipu(idmac);
-	struct list_head *list, *tmp;
-	unsigned long flags;
-
-	mutex_lock(&ichan->chan_mutex);
-
-	spin_lock_irqsave(&ipu->lock, flags);
-	ipu_ic_disable_task(ipu, chan->chan_id);
-
-	/* Return all descriptors into "prepared" state */
-	list_for_each_safe(list, tmp, &ichan->queue)
-		list_del_init(list);
-
-	ichan->sg[0] = NULL;
-	ichan->sg[1] = NULL;
-
-	spin_unlock_irqrestore(&ipu->lock, flags);
-
-	ichan->status = IPU_CHANNEL_INITIALIZED;
-
-	mutex_unlock(&ichan->chan_mutex);
-
-	return 0;
-}
-
-static int __idmac_terminate_all(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac *idmac = to_idmac(chan->device);
-	struct ipu *ipu = to_ipu(idmac);
-	unsigned long flags;
-	int i;
-
-	ipu_disable_channel(idmac, ichan,
-			    ichan->status >= IPU_CHANNEL_ENABLED);
-
-	tasklet_disable(&ipu->tasklet);
-
-	/* ichan->queue is modified in ISR, have to spinlock */
-	spin_lock_irqsave(&ichan->lock, flags);
-	list_splice_init(&ichan->queue, &ichan->free_list);
-
-	if (ichan->desc)
-		for (i = 0; i < ichan->n_tx_desc; i++) {
-			struct idmac_tx_desc *desc = ichan->desc + i;
-			if (list_empty(&desc->list))
-				/* Descriptor was prepared, but not submitted */
-				list_add(&desc->list, &ichan->free_list);
-
-			async_tx_clear_ack(&desc->txd);
-		}
-
-	ichan->sg[0] = NULL;
-	ichan->sg[1] = NULL;
-	spin_unlock_irqrestore(&ichan->lock, flags);
-
-	tasklet_enable(&ipu->tasklet);
-
-	ichan->status = IPU_CHANNEL_INITIALIZED;
-
-	return 0;
-}
-
-static int idmac_terminate_all(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	int ret;
-
-	mutex_lock(&ichan->chan_mutex);
-
-	ret = __idmac_terminate_all(chan);
-
-	mutex_unlock(&ichan->chan_mutex);
-
-	return ret;
-}
-
-#ifdef DEBUG
-static irqreturn_t ic_sof_irq(int irq, void *dev_id)
-{
-	struct idmac_channel *ichan = dev_id;
-	printk(KERN_DEBUG "Got SOF IRQ %d on Channel %d\n",
-	       irq, ichan->dma_chan.chan_id);
-	disable_irq_nosync(irq);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t ic_eof_irq(int irq, void *dev_id)
-{
-	struct idmac_channel *ichan = dev_id;
-	printk(KERN_DEBUG "Got EOF IRQ %d on Channel %d\n",
-	       irq, ichan->dma_chan.chan_id);
-	disable_irq_nosync(irq);
-	return IRQ_HANDLED;
-}
-
-static int ic_sof = -EINVAL, ic_eof = -EINVAL;
-#endif
-
-static int idmac_alloc_chan_resources(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac *idmac = to_idmac(chan->device);
-	int ret;
-
-	/* dmaengine.c now guarantees to only offer free channels */
-	BUG_ON(chan->client_count > 1);
-	WARN_ON(ichan->status != IPU_CHANNEL_FREE);
-
-	dma_cookie_init(chan);
-
-	ret = ipu_irq_map(chan->chan_id);
-	if (ret < 0)
-		goto eimap;
-
-	ichan->eof_irq = ret;
-
-	/*
-	 * Important to first disable the channel, because maybe someone
-	 * used it before us, e.g., the bootloader
-	 */
-	ipu_disable_channel(idmac, ichan, true);
-
-	ret = ipu_init_channel(idmac, ichan);
-	if (ret < 0)
-		goto eichan;
-
-	ret = request_irq(ichan->eof_irq, idmac_interrupt, 0,
-			  ichan->eof_name, ichan);
-	if (ret < 0)
-		goto erirq;
-
-#ifdef DEBUG
-	if (chan->chan_id == IDMAC_IC_7) {
-		ic_sof = ipu_irq_map(69);
-		if (ic_sof > 0) {
-			ret = request_irq(ic_sof, ic_sof_irq, 0, "IC SOF", ichan);
-			if (ret)
-				dev_err(&chan->dev->device, "request irq failed for IC SOF");
-		}
-		ic_eof = ipu_irq_map(70);
-		if (ic_eof > 0) {
-			ret = request_irq(ic_eof, ic_eof_irq, 0, "IC EOF", ichan);
-			if (ret)
-				dev_err(&chan->dev->device, "request irq failed for IC EOF");
-		}
-	}
-#endif
-
-	ichan->status = IPU_CHANNEL_INITIALIZED;
-
-	dev_dbg(&chan->dev->device, "Found channel 0x%x, irq %d\n",
-		chan->chan_id, ichan->eof_irq);
-
-	return ret;
-
-erirq:
-	ipu_uninit_channel(idmac, ichan);
-eichan:
-	ipu_irq_unmap(chan->chan_id);
-eimap:
-	return ret;
-}
-
-static void idmac_free_chan_resources(struct dma_chan *chan)
-{
-	struct idmac_channel *ichan = to_idmac_chan(chan);
-	struct idmac *idmac = to_idmac(chan->device);
-
-	mutex_lock(&ichan->chan_mutex);
-
-	__idmac_terminate_all(chan);
-
-	if (ichan->status > IPU_CHANNEL_FREE) {
-#ifdef DEBUG
-		if (chan->chan_id == IDMAC_IC_7) {
-			if (ic_sof > 0) {
-				free_irq(ic_sof, ichan);
-				ipu_irq_unmap(69);
-				ic_sof = -EINVAL;
-			}
-			if (ic_eof > 0) {
-				free_irq(ic_eof, ichan);
-				ipu_irq_unmap(70);
-				ic_eof = -EINVAL;
-			}
-		}
-#endif
-		free_irq(ichan->eof_irq, ichan);
-		ipu_irq_unmap(chan->chan_id);
-	}
-
-	ichan->status = IPU_CHANNEL_FREE;
-
-	ipu_uninit_channel(idmac, ichan);
-
-	mutex_unlock(&ichan->chan_mutex);
-
-	tasklet_schedule(&to_ipu(idmac)->tasklet);
-}
-
-static enum dma_status idmac_tx_status(struct dma_chan *chan,
-		       dma_cookie_t cookie, struct dma_tx_state *txstate)
-{
-	return dma_cookie_status(chan, cookie, txstate);
-}
-
-static int __init ipu_idmac_init(struct ipu *ipu)
-{
-	struct idmac *idmac = &ipu->idmac;
-	struct dma_device *dma = &idmac->dma;
-	int i;
-
-	dma_cap_set(DMA_SLAVE, dma->cap_mask);
-	dma_cap_set(DMA_PRIVATE, dma->cap_mask);
-
-	/* Compulsory common fields */
-	dma->dev				= ipu->dev;
-	dma->device_alloc_chan_resources	= idmac_alloc_chan_resources;
-	dma->device_free_chan_resources		= idmac_free_chan_resources;
-	dma->device_tx_status			= idmac_tx_status;
-	dma->device_issue_pending		= idmac_issue_pending;
-
-	/* Compulsory for DMA_SLAVE fields */
-	dma->device_prep_slave_sg		= idmac_prep_slave_sg;
-	dma->device_pause			= idmac_pause;
-	dma->device_terminate_all		= idmac_terminate_all;
-
-	INIT_LIST_HEAD(&dma->channels);
-	for (i = 0; i < IPU_CHANNELS_NUM; i++) {
-		struct idmac_channel *ichan = ipu->channel + i;
-		struct dma_chan *dma_chan = &ichan->dma_chan;
-
-		spin_lock_init(&ichan->lock);
-		mutex_init(&ichan->chan_mutex);
-
-		ichan->status		= IPU_CHANNEL_FREE;
-		ichan->sec_chan_en	= false;
-		snprintf(ichan->eof_name, sizeof(ichan->eof_name), "IDMAC EOF %d", i);
-
-		dma_chan->device	= &idmac->dma;
-		dma_cookie_init(dma_chan);
-		dma_chan->chan_id	= i;
-		list_add_tail(&dma_chan->device_node, &dma->channels);
-	}
-
-	idmac_write_icreg(ipu, 0x00000070, IDMAC_CONF);
-
-	return dma_async_device_register(&idmac->dma);
-}
-
-static void ipu_idmac_exit(struct ipu *ipu)
-{
-	int i;
-	struct idmac *idmac = &ipu->idmac;
-
-	for (i = 0; i < IPU_CHANNELS_NUM; i++) {
-		struct idmac_channel *ichan = ipu->channel + i;
-
-		idmac_terminate_all(&ichan->dma_chan);
-	}
-
-	dma_async_device_unregister(&idmac->dma);
-}
-
-/*****************************************************************************
- * IPU common probe / remove
- */
-
-static int __init ipu_probe(struct platform_device *pdev)
-{
-	struct resource *mem_ipu, *mem_ic;
-	int ret;
-
-	spin_lock_init(&ipu_data.lock);
-
-	mem_ipu	= platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mem_ic	= platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (!mem_ipu || !mem_ic)
-		return -EINVAL;
-
-	ipu_data.dev = &pdev->dev;
-
-	platform_set_drvdata(pdev, &ipu_data);
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0)
-		goto err_noirq;
-
-	ipu_data.irq_fn = ret;
-	ret = platform_get_irq(pdev, 1);
-	if (ret < 0)
-		goto err_noirq;
-
-	ipu_data.irq_err = ret;
-
-	dev_dbg(&pdev->dev, "fn irq %u, err irq %u\n",
-		ipu_data.irq_fn, ipu_data.irq_err);
-
-	/* Remap IPU common registers */
-	ipu_data.reg_ipu = ioremap(mem_ipu->start, resource_size(mem_ipu));
-	if (!ipu_data.reg_ipu) {
-		ret = -ENOMEM;
-		goto err_ioremap_ipu;
-	}
-
-	/* Remap Image Converter and Image DMA Controller registers */
-	ipu_data.reg_ic = ioremap(mem_ic->start, resource_size(mem_ic));
-	if (!ipu_data.reg_ic) {
-		ret = -ENOMEM;
-		goto err_ioremap_ic;
-	}
-
-	/* Get IPU clock */
-	ipu_data.ipu_clk = clk_get(&pdev->dev, NULL);
-	if (IS_ERR(ipu_data.ipu_clk)) {
-		ret = PTR_ERR(ipu_data.ipu_clk);
-		goto err_clk_get;
-	}
-
-	/* Make sure IPU HSP clock is running */
-	clk_prepare_enable(ipu_data.ipu_clk);
-
-	/* Disable all interrupts */
-	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_1);
-	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_2);
-	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_3);
-	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_4);
-	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_5);
-
-	dev_dbg(&pdev->dev, "%s @ 0x%08lx, fn irq %u, err irq %u\n", pdev->name,
-		(unsigned long)mem_ipu->start, ipu_data.irq_fn, ipu_data.irq_err);
-
-	ret = ipu_irq_attach_irq(&ipu_data, pdev);
-	if (ret < 0)
-		goto err_attach_irq;
-
-	/* Initialize DMA engine */
-	ret = ipu_idmac_init(&ipu_data);
-	if (ret < 0)
-		goto err_idmac_init;
-
-	tasklet_setup(&ipu_data.tasklet, ipu_gc_tasklet);
-
-	ipu_data.dev = &pdev->dev;
-
-	dev_dbg(ipu_data.dev, "IPU initialized\n");
-
-	return 0;
-
-err_idmac_init:
-err_attach_irq:
-	ipu_irq_detach_irq(&ipu_data, pdev);
-	clk_disable_unprepare(ipu_data.ipu_clk);
-	clk_put(ipu_data.ipu_clk);
-err_clk_get:
-	iounmap(ipu_data.reg_ic);
-err_ioremap_ic:
-	iounmap(ipu_data.reg_ipu);
-err_ioremap_ipu:
-err_noirq:
-	dev_err(&pdev->dev, "Failed to probe IPU: %d\n", ret);
-	return ret;
-}
-
-static int ipu_remove(struct platform_device *pdev)
-{
-	struct ipu *ipu = platform_get_drvdata(pdev);
-
-	ipu_idmac_exit(ipu);
-	ipu_irq_detach_irq(ipu, pdev);
-	clk_disable_unprepare(ipu->ipu_clk);
-	clk_put(ipu->ipu_clk);
-	iounmap(ipu->reg_ic);
-	iounmap(ipu->reg_ipu);
-	tasklet_kill(&ipu->tasklet);
-
-	return 0;
-}
-
-/*
- * We need two MEM resources - with IPU-common and Image Converter registers,
- * including PF_CONF and IDMAC_* registers, and two IRQs - function and error
- */
-static struct platform_driver ipu_platform_driver = {
-	.driver = {
-		.name	= "ipu-core",
-	},
-	.remove		= ipu_remove,
-};
-
-static int __init ipu_init(void)
-{
-	return platform_driver_probe(&ipu_platform_driver, ipu_probe);
-}
-subsys_initcall(ipu_init);
-
-MODULE_DESCRIPTION("IPU core driver");
-MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>");
-MODULE_ALIAS("platform:ipu-core");
diff --git a/drivers/dma/ipu/ipu_intern.h b/drivers/dma/ipu/ipu_intern.h
deleted file mode 100644
index e7ec1dec3edf..000000000000
--- a/drivers/dma/ipu/ipu_intern.h
+++ /dev/null
@@ -1,173 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2008
- * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
- *
- * Copyright (C) 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-#ifndef _IPU_INTERN_H_
-#define _IPU_INTERN_H_
-
-#include <linux/dmaengine.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-
-/* IPU Common registers */
-#define IPU_CONF		0x00
-#define IPU_CHA_BUF0_RDY	0x04
-#define IPU_CHA_BUF1_RDY	0x08
-#define IPU_CHA_DB_MODE_SEL	0x0C
-#define IPU_CHA_CUR_BUF		0x10
-#define IPU_FS_PROC_FLOW	0x14
-#define IPU_FS_DISP_FLOW	0x18
-#define IPU_TASKS_STAT		0x1C
-#define IPU_IMA_ADDR		0x20
-#define IPU_IMA_DATA		0x24
-#define IPU_INT_CTRL_1		0x28
-#define IPU_INT_CTRL_2		0x2C
-#define IPU_INT_CTRL_3		0x30
-#define IPU_INT_CTRL_4		0x34
-#define IPU_INT_CTRL_5		0x38
-#define IPU_INT_STAT_1		0x3C
-#define IPU_INT_STAT_2		0x40
-#define IPU_INT_STAT_3		0x44
-#define IPU_INT_STAT_4		0x48
-#define IPU_INT_STAT_5		0x4C
-#define IPU_BRK_CTRL_1		0x50
-#define IPU_BRK_CTRL_2		0x54
-#define IPU_BRK_STAT		0x58
-#define IPU_DIAGB_CTRL		0x5C
-
-/* IPU_CONF Register bits */
-#define IPU_CONF_CSI_EN		0x00000001
-#define IPU_CONF_IC_EN		0x00000002
-#define IPU_CONF_ROT_EN		0x00000004
-#define IPU_CONF_PF_EN		0x00000008
-#define IPU_CONF_SDC_EN		0x00000010
-#define IPU_CONF_ADC_EN		0x00000020
-#define IPU_CONF_DI_EN		0x00000040
-#define IPU_CONF_DU_EN		0x00000080
-#define IPU_CONF_PXL_ENDIAN	0x00000100
-
-/* Image Converter Registers */
-#define IC_CONF			0x88
-#define IC_PRP_ENC_RSC		0x8C
-#define IC_PRP_VF_RSC		0x90
-#define IC_PP_RSC		0x94
-#define IC_CMBP_1		0x98
-#define IC_CMBP_2		0x9C
-#define PF_CONF			0xA0
-#define IDMAC_CONF		0xA4
-#define IDMAC_CHA_EN		0xA8
-#define IDMAC_CHA_PRI		0xAC
-#define IDMAC_CHA_BUSY		0xB0
-
-/* Image Converter Register bits */
-#define IC_CONF_PRPENC_EN	0x00000001
-#define IC_CONF_PRPENC_CSC1	0x00000002
-#define IC_CONF_PRPENC_ROT_EN	0x00000004
-#define IC_CONF_PRPVF_EN	0x00000100
-#define IC_CONF_PRPVF_CSC1	0x00000200
-#define IC_CONF_PRPVF_CSC2	0x00000400
-#define IC_CONF_PRPVF_CMB	0x00000800
-#define IC_CONF_PRPVF_ROT_EN	0x00001000
-#define IC_CONF_PP_EN		0x00010000
-#define IC_CONF_PP_CSC1		0x00020000
-#define IC_CONF_PP_CSC2		0x00040000
-#define IC_CONF_PP_CMB		0x00080000
-#define IC_CONF_PP_ROT_EN	0x00100000
-#define IC_CONF_IC_GLB_LOC_A	0x10000000
-#define IC_CONF_KEY_COLOR_EN	0x20000000
-#define IC_CONF_RWS_EN		0x40000000
-#define IC_CONF_CSI_MEM_WR_EN	0x80000000
-
-#define IDMA_CHAN_INVALID	0x000000FF
-#define IDMA_IC_0		0x00000001
-#define IDMA_IC_1		0x00000002
-#define IDMA_IC_2		0x00000004
-#define IDMA_IC_3		0x00000008
-#define IDMA_IC_4		0x00000010
-#define IDMA_IC_5		0x00000020
-#define IDMA_IC_6		0x00000040
-#define IDMA_IC_7		0x00000080
-#define IDMA_IC_8		0x00000100
-#define IDMA_IC_9		0x00000200
-#define IDMA_IC_10		0x00000400
-#define IDMA_IC_11		0x00000800
-#define IDMA_IC_12		0x00001000
-#define IDMA_IC_13		0x00002000
-#define IDMA_SDC_BG		0x00004000
-#define IDMA_SDC_FG		0x00008000
-#define IDMA_SDC_MASK		0x00010000
-#define IDMA_SDC_PARTIAL	0x00020000
-#define IDMA_ADC_SYS1_WR	0x00040000
-#define IDMA_ADC_SYS2_WR	0x00080000
-#define IDMA_ADC_SYS1_CMD	0x00100000
-#define IDMA_ADC_SYS2_CMD	0x00200000
-#define IDMA_ADC_SYS1_RD	0x00400000
-#define IDMA_ADC_SYS2_RD	0x00800000
-#define IDMA_PF_QP		0x01000000
-#define IDMA_PF_BSP		0x02000000
-#define IDMA_PF_Y_IN		0x04000000
-#define IDMA_PF_U_IN		0x08000000
-#define IDMA_PF_V_IN		0x10000000
-#define IDMA_PF_Y_OUT		0x20000000
-#define IDMA_PF_U_OUT		0x40000000
-#define IDMA_PF_V_OUT		0x80000000
-
-#define TSTAT_PF_H264_PAUSE	0x00000001
-#define TSTAT_CSI2MEM_MASK	0x0000000C
-#define TSTAT_CSI2MEM_OFFSET	2
-#define TSTAT_VF_MASK		0x00000600
-#define TSTAT_VF_OFFSET		9
-#define TSTAT_VF_ROT_MASK	0x000C0000
-#define TSTAT_VF_ROT_OFFSET	18
-#define TSTAT_ENC_MASK		0x00000180
-#define TSTAT_ENC_OFFSET	7
-#define TSTAT_ENC_ROT_MASK	0x00030000
-#define TSTAT_ENC_ROT_OFFSET	16
-#define TSTAT_PP_MASK		0x00001800
-#define TSTAT_PP_OFFSET		11
-#define TSTAT_PP_ROT_MASK	0x00300000
-#define TSTAT_PP_ROT_OFFSET	20
-#define TSTAT_PF_MASK		0x00C00000
-#define TSTAT_PF_OFFSET		22
-#define TSTAT_ADCSYS1_MASK	0x03000000
-#define TSTAT_ADCSYS1_OFFSET	24
-#define TSTAT_ADCSYS2_MASK	0x0C000000
-#define TSTAT_ADCSYS2_OFFSET	26
-
-#define TASK_STAT_IDLE		0
-#define TASK_STAT_ACTIVE	1
-#define TASK_STAT_WAIT4READY	2
-
-struct idmac {
-	struct dma_device	dma;
-};
-
-struct ipu {
-	void __iomem		*reg_ipu;
-	void __iomem		*reg_ic;
-	unsigned int		irq_fn;		/* IPU Function IRQ to the CPU */
-	unsigned int		irq_err;	/* IPU Error IRQ to the CPU */
-	unsigned int		irq_base;	/* Beginning of the IPU IRQ range */
-	unsigned long		channel_init_mask;
-	spinlock_t		lock;
-	struct clk		*ipu_clk;
-	struct device		*dev;
-	struct idmac		idmac;
-	struct idmac_channel	channel[IPU_CHANNELS_NUM];
-	struct tasklet_struct	tasklet;
-};
-
-#define to_idmac(d) container_of(d, struct idmac, dma)
-
-extern int ipu_irq_attach_irq(struct ipu *ipu, struct platform_device *dev);
-extern void ipu_irq_detach_irq(struct ipu *ipu, struct platform_device *dev);
-
-extern bool ipu_irq_status(uint32_t irq);
-extern int ipu_irq_map(unsigned int source);
-extern int ipu_irq_unmap(unsigned int source);
-
-#endif
diff --git a/drivers/dma/ipu/ipu_irq.c b/drivers/dma/ipu/ipu_irq.c
deleted file mode 100644
index 97d9a6f04f2a..000000000000
--- a/drivers/dma/ipu/ipu_irq.c
+++ /dev/null
@@ -1,367 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2008
- * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
- */
-
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/dma/ipu-dma.h>
-
-#include "ipu_intern.h"
-
-/*
- * Register read / write - shall be inlined by the compiler
- */
-static u32 ipu_read_reg(struct ipu *ipu, unsigned long reg)
-{
-	return __raw_readl(ipu->reg_ipu + reg);
-}
-
-static void ipu_write_reg(struct ipu *ipu, u32 value, unsigned long reg)
-{
-	__raw_writel(value, ipu->reg_ipu + reg);
-}
-
-
-/*
- * IPU IRQ chip driver
- */
-
-#define IPU_IRQ_NR_FN_BANKS 3
-#define IPU_IRQ_NR_ERR_BANKS 2
-#define IPU_IRQ_NR_BANKS (IPU_IRQ_NR_FN_BANKS + IPU_IRQ_NR_ERR_BANKS)
-
-struct ipu_irq_bank {
-	unsigned int	control;
-	unsigned int	status;
-	struct ipu	*ipu;
-};
-
-static struct ipu_irq_bank irq_bank[IPU_IRQ_NR_BANKS] = {
-	/* 3 groups of functional interrupts */
-	{
-		.control	= IPU_INT_CTRL_1,
-		.status		= IPU_INT_STAT_1,
-	}, {
-		.control	= IPU_INT_CTRL_2,
-		.status		= IPU_INT_STAT_2,
-	}, {
-		.control	= IPU_INT_CTRL_3,
-		.status		= IPU_INT_STAT_3,
-	},
-	/* 2 groups of error interrupts */
-	{
-		.control	= IPU_INT_CTRL_4,
-		.status		= IPU_INT_STAT_4,
-	}, {
-		.control	= IPU_INT_CTRL_5,
-		.status		= IPU_INT_STAT_5,
-	},
-};
-
-struct ipu_irq_map {
-	unsigned int		irq;
-	int			source;
-	struct ipu_irq_bank	*bank;
-	struct ipu		*ipu;
-};
-
-static struct ipu_irq_map irq_map[CONFIG_MX3_IPU_IRQS];
-/* Protects allocations from the above array of maps */
-static DEFINE_MUTEX(map_lock);
-/* Protects register accesses and individual mappings */
-static DEFINE_RAW_SPINLOCK(bank_lock);
-
-static struct ipu_irq_map *src2map(unsigned int src)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_MX3_IPU_IRQS; i++)
-		if (irq_map[i].source == src)
-			return irq_map + i;
-
-	return NULL;
-}
-
-static void ipu_irq_unmask(struct irq_data *d)
-{
-	struct ipu_irq_map *map = irq_data_get_irq_chip_data(d);
-	struct ipu_irq_bank *bank;
-	uint32_t reg;
-	unsigned long lock_flags;
-
-	raw_spin_lock_irqsave(&bank_lock, lock_flags);
-
-	bank = map->bank;
-	if (!bank) {
-		raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-		pr_err("IPU: %s(%u) - unmapped!\n", __func__, d->irq);
-		return;
-	}
-
-	reg = ipu_read_reg(bank->ipu, bank->control);
-	reg |= (1UL << (map->source & 31));
-	ipu_write_reg(bank->ipu, reg, bank->control);
-
-	raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-}
-
-static void ipu_irq_mask(struct irq_data *d)
-{
-	struct ipu_irq_map *map = irq_data_get_irq_chip_data(d);
-	struct ipu_irq_bank *bank;
-	uint32_t reg;
-	unsigned long lock_flags;
-
-	raw_spin_lock_irqsave(&bank_lock, lock_flags);
-
-	bank = map->bank;
-	if (!bank) {
-		raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-		pr_err("IPU: %s(%u) - unmapped!\n", __func__, d->irq);
-		return;
-	}
-
-	reg = ipu_read_reg(bank->ipu, bank->control);
-	reg &= ~(1UL << (map->source & 31));
-	ipu_write_reg(bank->ipu, reg, bank->control);
-
-	raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-}
-
-static void ipu_irq_ack(struct irq_data *d)
-{
-	struct ipu_irq_map *map = irq_data_get_irq_chip_data(d);
-	struct ipu_irq_bank *bank;
-	unsigned long lock_flags;
-
-	raw_spin_lock_irqsave(&bank_lock, lock_flags);
-
-	bank = map->bank;
-	if (!bank) {
-		raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-		pr_err("IPU: %s(%u) - unmapped!\n", __func__, d->irq);
-		return;
-	}
-
-	ipu_write_reg(bank->ipu, 1UL << (map->source & 31), bank->status);
-	raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-}
-
-/**
- * ipu_irq_status() - returns the current interrupt status of the specified IRQ.
- * @irq:	interrupt line to get status for.
- * @return:	true if the interrupt is pending/asserted or false if the
- *		interrupt is not pending.
- */
-bool ipu_irq_status(unsigned int irq)
-{
-	struct ipu_irq_map *map = irq_get_chip_data(irq);
-	struct ipu_irq_bank *bank;
-	unsigned long lock_flags;
-	bool ret;
-
-	raw_spin_lock_irqsave(&bank_lock, lock_flags);
-	bank = map->bank;
-	ret = bank && ipu_read_reg(bank->ipu, bank->status) &
-		(1UL << (map->source & 31));
-	raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-
-	return ret;
-}
-
-/**
- * ipu_irq_map() - map an IPU interrupt source to an IRQ number
- * @source:	interrupt source bit position (see below)
- * @return:	mapped IRQ number or negative error code
- *
- * The source parameter has to be explained further. On i.MX31 IPU has 137 IRQ
- * sources, they are broken down in 5 32-bit registers, like 32, 32, 24, 32, 17.
- * However, the source argument of this function is not the sequence number of
- * the possible IRQ, but rather its bit position. So, first interrupt in fourth
- * register has source number 96, and not 88. This makes calculations easier,
- * and also provides forward compatibility with any future IPU implementations
- * with any interrupt bit assignments.
- */
-int ipu_irq_map(unsigned int source)
-{
-	int i, ret = -ENOMEM;
-	struct ipu_irq_map *map;
-
-	might_sleep();
-
-	mutex_lock(&map_lock);
-	map = src2map(source);
-	if (map) {
-		pr_err("IPU: Source %u already mapped to IRQ %u\n", source, map->irq);
-		ret = -EBUSY;
-		goto out;
-	}
-
-	for (i = 0; i < CONFIG_MX3_IPU_IRQS; i++) {
-		if (irq_map[i].source < 0) {
-			unsigned long lock_flags;
-
-			raw_spin_lock_irqsave(&bank_lock, lock_flags);
-			irq_map[i].source = source;
-			irq_map[i].bank = irq_bank + source / 32;
-			raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-
-			ret = irq_map[i].irq;
-			pr_debug("IPU: mapped source %u to IRQ %u\n",
-				 source, ret);
-			break;
-		}
-	}
-out:
-	mutex_unlock(&map_lock);
-
-	if (ret < 0)
-		pr_err("IPU: couldn't map source %u: %d\n", source, ret);
-
-	return ret;
-}
-
-/**
- * ipu_irq_unmap() - unmap an IPU interrupt source
- * @source:	interrupt source bit position (see ipu_irq_map())
- * @return:	0 or negative error code
- */
-int ipu_irq_unmap(unsigned int source)
-{
-	int i, ret = -EINVAL;
-
-	might_sleep();
-
-	mutex_lock(&map_lock);
-	for (i = 0; i < CONFIG_MX3_IPU_IRQS; i++) {
-		if (irq_map[i].source == source) {
-			unsigned long lock_flags;
-
-			pr_debug("IPU: unmapped source %u from IRQ %u\n",
-				 source, irq_map[i].irq);
-
-			raw_spin_lock_irqsave(&bank_lock, lock_flags);
-			irq_map[i].source = -EINVAL;
-			irq_map[i].bank = NULL;
-			raw_spin_unlock_irqrestore(&bank_lock, lock_flags);
-
-			ret = 0;
-			break;
-		}
-	}
-	mutex_unlock(&map_lock);
-
-	return ret;
-}
-
-/* Chained IRQ handler for IPU function and error interrupt */
-static void ipu_irq_handler(struct irq_desc *desc)
-{
-	struct ipu *ipu = irq_desc_get_handler_data(desc);
-	u32 status;
-	int i, line;
-
-	for (i = 0; i < IPU_IRQ_NR_BANKS; i++) {
-		struct ipu_irq_bank *bank = irq_bank + i;
-
-		raw_spin_lock(&bank_lock);
-		status = ipu_read_reg(ipu, bank->status);
-		/*
-		 * Don't think we have to clear all interrupts here, they will
-		 * be acked by ->handle_irq() (handle_level_irq). However, we
-		 * might want to clear unhandled interrupts after the loop...
-		 */
-		status &= ipu_read_reg(ipu, bank->control);
-		raw_spin_unlock(&bank_lock);
-		while ((line = ffs(status))) {
-			struct ipu_irq_map *map;
-			unsigned int irq;
-
-			line--;
-			status &= ~(1UL << line);
-
-			raw_spin_lock(&bank_lock);
-			map = src2map(32 * i + line);
-			if (!map) {
-				raw_spin_unlock(&bank_lock);
-				pr_err("IPU: Interrupt on unmapped source %u bank %d\n",
-				       line, i);
-				continue;
-			}
-			irq = map->irq;
-			raw_spin_unlock(&bank_lock);
-			generic_handle_irq(irq);
-		}
-	}
-}
-
-static struct irq_chip ipu_irq_chip = {
-	.name		= "ipu_irq",
-	.irq_ack	= ipu_irq_ack,
-	.irq_mask	= ipu_irq_mask,
-	.irq_unmask	= ipu_irq_unmask,
-};
-
-/* Install the IRQ handler */
-int __init ipu_irq_attach_irq(struct ipu *ipu, struct platform_device *dev)
-{
-	unsigned int irq, i;
-	int irq_base = irq_alloc_descs(-1, 0, CONFIG_MX3_IPU_IRQS,
-				       numa_node_id());
-
-	if (irq_base < 0)
-		return irq_base;
-
-	for (i = 0; i < IPU_IRQ_NR_BANKS; i++)
-		irq_bank[i].ipu = ipu;
-
-	for (i = 0; i < CONFIG_MX3_IPU_IRQS; i++) {
-		int ret;
-
-		irq = irq_base + i;
-		ret = irq_set_chip(irq, &ipu_irq_chip);
-		if (ret < 0)
-			return ret;
-		ret = irq_set_chip_data(irq, irq_map + i);
-		if (ret < 0)
-			return ret;
-		irq_map[i].ipu = ipu;
-		irq_map[i].irq = irq;
-		irq_map[i].source = -EINVAL;
-		irq_set_handler(irq, handle_level_irq);
-		irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
-	}
-
-	irq_set_chained_handler_and_data(ipu->irq_fn, ipu_irq_handler, ipu);
-
-	irq_set_chained_handler_and_data(ipu->irq_err, ipu_irq_handler, ipu);
-
-	ipu->irq_base = irq_base;
-
-	return 0;
-}
-
-void ipu_irq_detach_irq(struct ipu *ipu, struct platform_device *dev)
-{
-	unsigned int irq, irq_base;
-
-	irq_base = ipu->irq_base;
-
-	irq_set_chained_handler_and_data(ipu->irq_fn, NULL, NULL);
-
-	irq_set_chained_handler_and_data(ipu->irq_err, NULL, NULL);
-
-	for (irq = irq_base; irq < irq_base + CONFIG_MX3_IPU_IRQS; irq++) {
-		irq_set_status_flags(irq, IRQ_NOREQUEST);
-		irq_set_chip(irq, NULL);
-		irq_set_chip_data(irq, NULL);
-	}
-}