staging/atomisp: Add support for the Intel IPU v2

This patch adds support for the Intel IPU v2 as found on Android and IoT
Baytrail-T and Baytrail-CR platforms (those with the IPU PCI mapped). You
will also need the firmware files from your device (Android usually puts
them into /etc) - or you can find them in the downloadable restore/upgrade
kits if you blew them away for some reason.

It may be possible to extend the driver to handle the BYT/T windows
platforms such as the ASUS T100TA. These platforms don't expose the IPU via
the PCI interface but via ACPI buried in the GPU description and with the
camera information somewhere unknown so would need a platform driver
interface adding to the codebase *IFF* the firmware works on such devices.

To get good results you also need a suitable support library such as
libxcam. The camera is intended to be driven from Android so it has a lot of
features that many desktop apps don't fully spport.

In theory all the pieces are there to build it with -DISP2401 and some
differing files to get CherryTrail/T support, but unifying the drivers
properlly is a work in progress.

The IPU driver represents the work of a lot of people within Intel over many
years. It's historical goal was portability rather than Linux upstream. Any
queries about the upstream aimed driver should be sent to me not to the
original authors.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

11 files changed, 796 insertions, 0 deletions

diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.c
new file mode 100644
index 0000000..d8dccce
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.c
@@ -0,0 +1,219 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include "ia_css_types.h"
+#include "sh_css_defs.h"
+#include "ia_css_debug.h"
+#include "sh_css_frac.h"
+
+#include "bnr/bnr_1.0/ia_css_bnr.host.h"
+#include "ia_css_ynr.host.h"
+
+const struct ia_css_nr_config default_nr_config = {
+	16384,
+	8192,
+	1280,
+	0,
+	0
+};
+
+const struct ia_css_ee_config default_ee_config = {
+	8192,
+	128,
+	2048
+};
+
+void
+ia_css_nr_encode(
+	struct sh_css_isp_ynr_params *to,
+	const struct ia_css_nr_config *from,
+	unsigned size)
+{
+	(void)size;
+	/* YNR (Y Noise Reduction) */
+	to->threshold =
+		uDIGIT_FITTING((unsigned)8192, 16, SH_CSS_BAYER_BITS);
+	to->gain_all =
+	    uDIGIT_FITTING(from->ynr_gain, 16, SH_CSS_YNR_GAIN_SHIFT);
+	to->gain_dir =
+	    uDIGIT_FITTING(from->ynr_gain, 16, SH_CSS_YNR_GAIN_SHIFT);
+	to->threshold_cb =
+	    uDIGIT_FITTING(from->threshold_cb, 16, SH_CSS_BAYER_BITS);
+	to->threshold_cr =
+	    uDIGIT_FITTING(from->threshold_cr, 16, SH_CSS_BAYER_BITS);
+}
+
+void
+ia_css_yee_encode(
+	struct sh_css_isp_yee_params *to,
+	const struct ia_css_yee_config *from,
+	unsigned size)
+{
+	int asiWk1 = (int) from->ee.gain;
+	int asiWk2 = asiWk1 / 8;
+	int asiWk3 = asiWk1 / 4;
+
+	(void)size;
+	/* YEE (Y Edge Enhancement) */
+	to->dirthreshold_s =
+	    min((uDIGIT_FITTING(from->nr.direction, 16, SH_CSS_BAYER_BITS)
+				    << 1),
+		SH_CSS_BAYER_MAXVAL);
+	to->dirthreshold_g =
+	    min((uDIGIT_FITTING(from->nr.direction, 16, SH_CSS_BAYER_BITS)
+				    << 4),
+		SH_CSS_BAYER_MAXVAL);
+	to->dirthreshold_width_log2 =
+	    uFRACTION_BITS_FITTING(8);
+	to->dirthreshold_width =
+	    1 << to->dirthreshold_width_log2;
+	to->detailgain =
+	    uDIGIT_FITTING(from->ee.detail_gain, 11,
+			   SH_CSS_YEE_DETAIL_GAIN_SHIFT);
+	to->coring_s =
+	    (uDIGIT_FITTING((unsigned)56, 16, SH_CSS_BAYER_BITS) *
+	     from->ee.threshold) >> 8;
+	to->coring_g =
+	    (uDIGIT_FITTING((unsigned)224, 16, SH_CSS_BAYER_BITS) *
+	     from->ee.threshold) >> 8;
+	/* 8; // *1.125 ->[s4.8] */
+	to->scale_plus_s =
+	    (asiWk1 + asiWk2) >> (11 - SH_CSS_YEE_SCALE_SHIFT);
+	/* 8; // ( * -.25)->[s4.8] */
+	to->scale_plus_g =
+	    (0 - asiWk3) >> (11 - SH_CSS_YEE_SCALE_SHIFT);
+	/* 8; // *0.875 ->[s4.8] */
+	to->scale_minus_s =
+	    (asiWk1 - asiWk2) >> (11 - SH_CSS_YEE_SCALE_SHIFT);
+	/* 8; // ( *.25 ) ->[s4.8] */
+	to->scale_minus_g =
+	    (asiWk3) >> (11 - SH_CSS_YEE_SCALE_SHIFT);
+	to->clip_plus_s =
+	    uDIGIT_FITTING((unsigned)32760, 16, SH_CSS_BAYER_BITS);
+	to->clip_plus_g = 0;
+	to->clip_minus_s =
+	    uDIGIT_FITTING((unsigned)504, 16, SH_CSS_BAYER_BITS);
+	to->clip_minus_g =
+	    uDIGIT_FITTING((unsigned)32256, 16, SH_CSS_BAYER_BITS);
+	to->Yclip = SH_CSS_BAYER_MAXVAL;
+}
+
+void
+ia_css_nr_dump(
+	const struct sh_css_isp_ynr_params *ynr,
+	unsigned level)
+{
+	if (!ynr) return;
+	ia_css_debug_dtrace(level,
+		"Y Noise Reduction:\n");
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynr_threshold", ynr->threshold);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynr_gain_all", ynr->gain_all);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynr_gain_dir", ynr->gain_dir);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynr_threshold_cb", ynr->threshold_cb);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynr_threshold_cr", ynr->threshold_cr);
+}
+
+void
+ia_css_yee_dump(
+	const struct sh_css_isp_yee_params *yee,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"Y Edge Enhancement:\n");
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynryee_dirthreshold_s",
+			yee->dirthreshold_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynryee_dirthreshold_g",
+			yee->dirthreshold_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynryee_dirthreshold_width_log2",
+			yee->dirthreshold_width_log2);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynryee_dirthreshold_width",
+			yee->dirthreshold_width);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_detailgain",
+			yee->detailgain);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_coring_s",
+			yee->coring_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_coring_g",
+			yee->coring_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_scale_plus_s",
+			yee->scale_plus_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_scale_plus_g",
+			yee->scale_plus_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_scale_minus_s",
+			yee->scale_minus_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_scale_minus_g",
+			yee->scale_minus_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_clip_plus_s",
+			yee->clip_plus_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_clip_plus_g",
+			yee->clip_plus_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_clip_minus_s",
+			yee->clip_minus_s);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"yee_clip_minus_g",
+			yee->clip_minus_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ynryee_Yclip",
+			yee->Yclip);
+}
+
+void
+ia_css_nr_debug_dtrace(
+	const struct ia_css_nr_config *config,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"config.direction=%d, "
+		"config.bnr_gain=%d, config.ynr_gain=%d, "
+		"config.threshold_cb=%d, config.threshold_cr=%d\n",
+		config->direction,
+		config->bnr_gain, config->ynr_gain,
+		config->threshold_cb, config->threshold_cr);
+}
+
+void
+ia_css_ee_debug_dtrace(
+	const struct ia_css_ee_config *config,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"config.threshold=%d, config.gain=%d, config.detail_gain=%d\n",
+		config->threshold, config->gain, config->detail_gain);
+}
+
+void
+ia_css_init_ynr_state(
+	void/*struct sh_css_isp_ynr_vmem_state*/ *state,
+	size_t size)
+{
+	memset(state, 0, size);
+}
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.h
new file mode 100644
index 0000000..b5730df3
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.h
@@ -0,0 +1,60 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR_HOST_H
+#define __IA_CSS_YNR_HOST_H
+
+#include "ia_css_ynr_types.h"
+#include "ia_css_ynr_param.h"
+
+extern const struct ia_css_nr_config default_nr_config;
+extern const struct ia_css_ee_config default_ee_config;
+
+void
+ia_css_nr_encode(
+	struct sh_css_isp_ynr_params *to,
+	const struct ia_css_nr_config *from,
+	unsigned size);
+
+void
+ia_css_yee_encode(
+	struct sh_css_isp_yee_params *to,
+	const struct ia_css_yee_config *from,
+	unsigned size);
+
+void
+ia_css_nr_dump(
+	const struct sh_css_isp_ynr_params *ynr,
+	unsigned level);
+
+void
+ia_css_yee_dump(
+	const struct sh_css_isp_yee_params *yee,
+	unsigned level);
+
+void
+ia_css_nr_debug_dtrace(
+	const struct ia_css_nr_config *config,
+	unsigned level);
+
+void
+ia_css_ee_debug_dtrace(
+	const struct ia_css_ee_config *config,
+	unsigned level);
+
+void
+ia_css_init_ynr_state(
+	void/*struct sh_css_isp_ynr_vmem_state*/ *state,
+	size_t size);
+#endif /* __IA_CSS_YNR_HOST_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_param.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_param.h
new file mode 100644
index 0000000..ad61ec12
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_param.h
@@ -0,0 +1,49 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR_PARAM_H
+#define __IA_CSS_YNR_PARAM_H
+
+#include "type_support.h"
+
+/* YNR (Y Noise Reduction) */
+struct sh_css_isp_ynr_params {
+	int32_t threshold;
+	int32_t gain_all;
+	int32_t gain_dir;
+	int32_t threshold_cb;
+	int32_t threshold_cr;
+};
+
+/* YEE (Y Edge Enhancement) */
+struct sh_css_isp_yee_params {
+	int32_t dirthreshold_s;
+	int32_t dirthreshold_g;
+	int32_t dirthreshold_width_log2;
+	int32_t dirthreshold_width;
+	int32_t detailgain;
+	int32_t coring_s;
+	int32_t coring_g;
+	int32_t scale_plus_s;
+	int32_t scale_plus_g;
+	int32_t scale_minus_s;
+	int32_t scale_minus_g;
+	int32_t clip_plus_s;
+	int32_t clip_plus_g;
+	int32_t clip_minus_s;
+	int32_t clip_minus_g;
+	int32_t Yclip;
+};
+
+#endif /* __IA_CSS_YNR_PARAM_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_state.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_state.h
new file mode 100644
index 0000000..b2348b1
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_state.h
@@ -0,0 +1,26 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR_STATE_H
+#define __IA_CSS_YNR_STATE_H
+
+#include "type_support.h"
+#include "vmem.h"
+
+/* YNR (luminance noise reduction) */
+struct sh_css_isp_ynr_vmem_state {
+	VMEM_ARRAY(ynr_buf[4], MAX_VECTORS_PER_BUF_LINE*ISP_NWAY);
+};
+
+#endif /* __IA_CSS_YNR_STATE_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_types.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_types.h
new file mode 100644
index 0000000..3f46655
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_1.0/ia_css_ynr_types.h
@@ -0,0 +1,81 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR_TYPES_H
+#define __IA_CSS_YNR_TYPES_H
+
+/** @file
+* CSS-API header file for Noise Reduction (BNR) and YCC Noise Reduction (YNR,CNR).
+*/
+
+/** Configuration used by Bayer Noise Reduction (BNR) and
+ *  YCC Noise Reduction (YNR,CNR).
+ *
+ *  ISP block: BNR1, YNR1, CNR1
+ *  ISP1: BNR1,YNR1,CNR1 are used.
+ *  ISP2: BNR1,YNR1,CNR1 are used for Preview/Video.
+ *        BNR1,YNR2,CNR2 are used for Still.
+ */
+struct ia_css_nr_config {
+	ia_css_u0_16 bnr_gain;	   /**< Strength of noise reduction (BNR).
+				u0.16, [0,65535],
+				default 14336(0.21875), ineffective 0 */
+	ia_css_u0_16 ynr_gain;	   /**< Strength of noise reduction (YNR).
+				u0.16, [0,65535],
+				default 14336(0.21875), ineffective 0 */
+	ia_css_u0_16 direction;    /**< Sensitivity of edge (BNR).
+				u0.16, [0,65535],
+				default 512(0.0078125), ineffective 0 */
+	ia_css_u0_16 threshold_cb; /**< Coring threshold for Cb (CNR).
+				This is the same as
+				de_config.c1_coring_threshold.
+				u0.16, [0,65535],
+				default 0(0), ineffective 0 */
+	ia_css_u0_16 threshold_cr; /**< Coring threshold for Cr (CNR).
+				This is the same as
+				de_config.c2_coring_threshold.
+				u0.16, [0,65535],
+				default 0(0), ineffective 0 */
+};
+
+/** Edge Enhancement (sharpen) configuration.
+ *
+ *  ISP block: YEE1
+ *  ISP1: YEE1 is used.
+ *  ISP2: YEE1 is used for Preview/Video.
+ *       (YEE2 is used for Still.)
+ */
+struct ia_css_ee_config {
+	ia_css_u5_11 gain;	  /**< The strength of sharpness.
+					u5.11, [0,65535],
+					default 8192(4.0), ineffective 0 */
+	ia_css_u8_8 threshold;    /**< The threshold that divides noises from
+					edge.
+					u8.8, [0,65535],
+					default 256(1.0), ineffective 65535 */
+	ia_css_u5_11 detail_gain; /**< The strength of sharpness in pell-mell
+					area.
+					u5.11, [0,65535],
+					default 2048(1.0), ineffective 0 */
+};
+
+/** YNR and YEE (sharpen) configuration.
+ */
+struct ia_css_yee_config {
+	struct ia_css_nr_config nr; /**< The NR configuration. */
+	struct ia_css_ee_config ee; /**< The EE configuration. */
+};
+
+#endif /* __IA_CSS_YNR_TYPES_H */
+
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.c
new file mode 100644
index 0000000..44b0050
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.c
@@ -0,0 +1,125 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include "ia_css_types.h"
+#include "sh_css_defs.h"
+#include "ia_css_debug.h"
+#include "assert_support.h"
+
+#include "ia_css_ynr2.host.h"
+
+const struct ia_css_ynr_config default_ynr_config = {
+	0,
+	0,
+	0,
+	0,
+};
+
+const struct ia_css_fc_config default_fc_config = {
+	1,
+	0,		/* 0 -> ineffective */
+	0,		/* 0 -> ineffective */
+	0,		/* 0 -> ineffective */
+	0,		/* 0 -> ineffective */
+	(1 << (ISP_VEC_ELEMBITS - 2)),		/* 0.5 */
+	(1 << (ISP_VEC_ELEMBITS - 2)),		/* 0.5 */
+	(1 << (ISP_VEC_ELEMBITS - 2)),		/* 0.5 */
+	(1 << (ISP_VEC_ELEMBITS - 2)),		/* 0.5 */
+	(1 << (ISP_VEC_ELEMBITS - 1)) - 1,	/* 1 */
+	(1 << (ISP_VEC_ELEMBITS - 1)) - 1,	/* 1 */
+	(int16_t)- (1 << (ISP_VEC_ELEMBITS - 1)),	/* -1 */
+	(int16_t)- (1 << (ISP_VEC_ELEMBITS - 1)),	/* -1 */
+};
+
+void
+ia_css_ynr_encode(
+	struct sh_css_isp_yee2_params *to,
+	const struct ia_css_ynr_config *from,
+	unsigned size)
+{
+	(void)size;
+	to->edge_sense_gain_0   = from->edge_sense_gain_0;
+	to->edge_sense_gain_1   = from->edge_sense_gain_1;
+	to->corner_sense_gain_0 = from->corner_sense_gain_0;
+	to->corner_sense_gain_1 = from->corner_sense_gain_1;
+}
+
+void
+ia_css_fc_encode(
+	struct sh_css_isp_fc_params *to,
+	const struct ia_css_fc_config *from,
+	unsigned size)
+{
+	(void)size;
+	to->gain_exp   = from->gain_exp;
+
+	to->coring_pos_0 = from->coring_pos_0;
+	to->coring_pos_1 = from->coring_pos_1;
+	to->coring_neg_0 = from->coring_neg_0;
+	to->coring_neg_1 = from->coring_neg_1;
+
+	to->gain_pos_0 = from->gain_pos_0;
+	to->gain_pos_1 = from->gain_pos_1;
+	to->gain_neg_0 = from->gain_neg_0;
+	to->gain_neg_1 = from->gain_neg_1;
+
+	to->crop_pos_0 = from->crop_pos_0;
+	to->crop_pos_1 = from->crop_pos_1;
+	to->crop_neg_0 = from->crop_neg_0;
+	to->crop_neg_1 = from->crop_neg_1;
+}
+
+void
+ia_css_ynr_dump(
+	const struct sh_css_isp_yee2_params *yee2,
+	unsigned level);
+
+void
+ia_css_fc_dump(
+	const struct sh_css_isp_fc_params *fc,
+	unsigned level);
+
+void
+ia_css_fc_debug_dtrace(
+	const struct ia_css_fc_config *config,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"config.gain_exp=%d, "
+		"config.coring_pos_0=%d, config.coring_pos_1=%d, "
+		"config.coring_neg_0=%d, config.coring_neg_1=%d, "
+		"config.gain_pos_0=%d, config.gain_pos_1=%d, "
+		"config.gain_neg_0=%d, config.gain_neg_1=%d, "
+		"config.crop_pos_0=%d, config.crop_pos_1=%d, "
+		"config.crop_neg_0=%d, config.crop_neg_1=%d\n",
+		config->gain_exp,
+		config->coring_pos_0, config->coring_pos_1,
+		config->coring_neg_0, config->coring_neg_1,
+		config->gain_pos_0, config->gain_pos_1,
+		config->gain_neg_0, config->gain_neg_1,
+		config->crop_pos_0, config->crop_pos_1,
+		config->crop_neg_0, config->crop_neg_1);
+}
+
+void
+ia_css_ynr_debug_dtrace(
+	const struct ia_css_ynr_config *config,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"config.edge_sense_gain_0=%d, config.edge_sense_gain_1=%d, "
+		"config.corner_sense_gain_0=%d, config.corner_sense_gain_1=%d\n",
+		config->edge_sense_gain_0, config->edge_sense_gain_1,
+		config->corner_sense_gain_0, config->corner_sense_gain_1);
+}
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.h
new file mode 100644
index 0000000..71e89c4
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2.host.h
@@ -0,0 +1,56 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR2_HOST_H
+#define __IA_CSS_YNR2_HOST_H
+
+#include "ia_css_ynr2_types.h"
+#include "ia_css_ynr2_param.h"
+
+extern const struct ia_css_ynr_config default_ynr_config;
+extern const struct ia_css_fc_config  default_fc_config;
+
+void
+ia_css_ynr_encode(
+	struct sh_css_isp_yee2_params *to,
+	const struct ia_css_ynr_config *from,
+	unsigned size);
+
+void
+ia_css_fc_encode(
+	struct sh_css_isp_fc_params *to,
+	const struct ia_css_fc_config *from,
+	unsigned size);
+
+void
+ia_css_ynr_dump(
+	const struct sh_css_isp_yee2_params *yee2,
+	unsigned level);
+
+void
+ia_css_fc_dump(
+	const struct sh_css_isp_fc_params *fc,
+	unsigned level);
+
+void
+ia_css_fc_debug_dtrace(
+	const struct ia_css_fc_config *config,
+	unsigned level);
+
+void
+ia_css_ynr_debug_dtrace(
+	const struct ia_css_ynr_config *config,
+	unsigned level);
+
+#endif /* __IA_CSS_YNR2_HOST_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_param.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_param.h
new file mode 100644
index 0000000..e56b695
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_param.h
@@ -0,0 +1,45 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR2_PARAM_H
+#define __IA_CSS_YNR2_PARAM_H
+
+#include "type_support.h"
+
+/* YNR (Y Noise Reduction), YEE (Y Edge Enhancement) */
+struct sh_css_isp_yee2_params {
+	int32_t edge_sense_gain_0;
+	int32_t edge_sense_gain_1;
+	int32_t corner_sense_gain_0;
+	int32_t corner_sense_gain_1;
+};
+
+/* Fringe Control */
+struct sh_css_isp_fc_params {
+	int32_t gain_exp;
+	uint16_t coring_pos_0;
+	uint16_t coring_pos_1;
+	uint16_t coring_neg_0;
+	uint16_t coring_neg_1;
+	int32_t gain_pos_0;
+	int32_t gain_pos_1;
+	int32_t gain_neg_0;
+	int32_t gain_neg_1;
+	int32_t crop_pos_0;
+	int32_t crop_pos_1;
+	int32_t crop_neg_0;
+	int32_t crop_neg_1;
+};
+
+#endif /* __IA_CSS_YNR2_PARAM_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_types.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_types.h
new file mode 100644
index 0000000..e0a0b10
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr2_types.h
@@ -0,0 +1,94 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR2_TYPES_H
+#define __IA_CSS_YNR2_TYPES_H
+
+/** @file
+* CSS-API header file for Y(Luma) Noise Reduction.
+*/
+
+/** Y(Luma) Noise Reduction configuration.
+ *
+ *  ISP block: YNR2 & YEE2
+ * (ISP1: YNR1 and YEE1 are used.)
+ * (ISP2: YNR1 and YEE1 are used for Preview/Video.)
+ *  ISP2: YNR2 and YEE2 are used for Still.
+ */
+struct ia_css_ynr_config {
+	uint16_t edge_sense_gain_0;   /**< Sensitivity of edge in dark area.
+					u13.0, [0,8191],
+					default 1000, ineffective 0 */
+	uint16_t edge_sense_gain_1;   /**< Sensitivity of edge in bright area.
+					u13.0, [0,8191],
+					default 1000, ineffective 0 */
+	uint16_t corner_sense_gain_0; /**< Sensitivity of corner in dark area.
+					u13.0, [0,8191],
+					default 1000, ineffective 0 */
+	uint16_t corner_sense_gain_1; /**< Sensitivity of corner in bright area.
+					u13.0, [0,8191],
+					default 1000, ineffective 0 */
+};
+
+/** Fringe Control configuration.
+ *
+ *  ISP block: FC2 (FC2 is used with YNR2/YEE2.)
+ * (ISP1: FC2 is not used.)
+ * (ISP2: FC2 is not for Preview/Video.)
+ *  ISP2: FC2 is used for Still.
+ */
+struct ia_css_fc_config {
+	uint8_t  gain_exp;   /**< Common exponent of gains.
+				u8.0, [0,13],
+				default 1, ineffective 0 */
+	uint16_t coring_pos_0; /**< Coring threshold for positive edge in dark area.
+				u0.13, [0,8191],
+				default 0(0), ineffective 0 */
+	uint16_t coring_pos_1; /**< Coring threshold for positive edge in bright area.
+				u0.13, [0,8191],
+				default 0(0), ineffective 0 */
+	uint16_t coring_neg_0; /**< Coring threshold for negative edge in dark area.
+				u0.13, [0,8191],
+				default 0(0), ineffective 0 */
+	uint16_t coring_neg_1; /**< Coring threshold for negative edge in bright area.
+				u0.13, [0,8191],
+				default 0(0), ineffective 0 */
+	uint16_t gain_pos_0; /**< Gain for positive edge in dark area.
+				u0.13, [0,8191],
+				default 4096(0.5), ineffective 0 */
+	uint16_t gain_pos_1; /**< Gain for positive edge in bright area.
+				u0.13, [0,8191],
+				default 4096(0.5), ineffective 0 */
+	uint16_t gain_neg_0; /**< Gain for negative edge in dark area.
+				u0.13, [0,8191],
+				default 4096(0.5), ineffective 0 */
+	uint16_t gain_neg_1; /**< Gain for negative edge in bright area.
+				u0.13, [0,8191],
+				default 4096(0.5), ineffective 0 */
+	uint16_t crop_pos_0; /**< Limit for positive edge in dark area.
+				u0.13, [0,8191],
+				default/ineffective 8191(almost 1.0) */
+	uint16_t crop_pos_1; /**< Limit for positive edge in bright area.
+				u0.13, [0,8191],
+				default/ineffective 8191(almost 1.0) */
+	int16_t  crop_neg_0; /**< Limit for negative edge in dark area.
+				s0.13, [-8192,0],
+				default/ineffective -8192(-1.0) */
+	int16_t  crop_neg_1; /**< Limit for negative edge in bright area.
+				s0.13, [-8192,0],
+				default/ineffective -8192(-1.0) */
+};
+
+#endif /* __IA_CSS_YNR2_TYPES_H */
+
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_param.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_param.h
new file mode 100644
index 0000000..48fb7d2
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_param.h
@@ -0,0 +1,20 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNRX_PARAM_H
+#define __IA_CSS_YNRX_PARAM_H
+
+#include "ia_css_ynr2_param.h"
+
+#endif /* __IA_CSS_YNRX_PARAM_H */
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_state.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_state.h
new file mode 100644
index 0000000..2516dd3
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/ynr/ynr_2/ia_css_ynr_state.h
@@ -0,0 +1,21 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __IA_CSS_YNR2_STATE_H
+#define __IA_CSS_YNR2_STATE_H
+
+/* Reuse YNR1 states */
+#include "../ynr_1.0/ia_css_ynr_state.h"
+
+#endif /* __IA_CSS_YNR2_STATE_H */