[media] davinci: vpfe: dm365: resizer driver based on media framework

Add the video resizer driver with the v4l2 media controller framework
which takes care of resizing the video frames with both up-scaling
downscaling facility. The driver supports both continuous and
single shot operations.The driver supports resizer as a subdevice
and a media entity. It has support for 2 resizers - resizerA
and resizerB.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 2243 insertions, 0 deletions

diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
new file mode 100644
index 00000000000..9cb0262b9b3
--- /dev/null
+++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
@@ -0,0 +1,1999 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Inc
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * Contributors:
+ *      Manjunath Hadli <manjunath.hadli@ti.com>
+ *      Prabhakar Lad <prabhakar.lad@ti.com>
+ *
+ *
+ * Resizer allows upscaling or downscaling a image to a desired
+ * resolution. There are 2 resizer modules. both operating on the
+ * same input image, but can have different output resolution.
+ */
+
+#include "dm365_ipipe_hw.h"
+#include "dm365_resizer.h"
+
+#define MIN_IN_WIDTH		32
+#define MIN_IN_HEIGHT		32
+#define MAX_IN_WIDTH		4095
+#define MAX_IN_HEIGHT		4095
+#define MIN_OUT_WIDTH		16
+#define MIN_OUT_HEIGHT		2
+
+static const unsigned int resizer_input_formats[] = {
+	V4L2_MBUS_FMT_UYVY8_2X8,
+	V4L2_MBUS_FMT_Y8_1X8,
+	V4L2_MBUS_FMT_UV8_1X8,
+	V4L2_MBUS_FMT_SGRBG12_1X12,
+};
+
+static const unsigned int resizer_output_formats[] = {
+	V4L2_MBUS_FMT_UYVY8_2X8,
+	V4L2_MBUS_FMT_Y8_1X8,
+	V4L2_MBUS_FMT_UV8_1X8,
+	V4L2_MBUS_FMT_YDYUYDYV8_1X16,
+	V4L2_MBUS_FMT_SGRBG12_1X12,
+};
+
+/* resizer_calculate_line_length() - This function calculates the line length of
+ *				     various image planes at the input and
+ *				     output.
+ */
+static void
+resizer_calculate_line_length(enum v4l2_mbus_pixelcode pix, int width,
+		      int height, int *line_len, int *line_len_c)
+{
+	*line_len = 0;
+	*line_len_c = 0;
+
+	if (pix == V4L2_MBUS_FMT_UYVY8_2X8 ||
+	    pix == V4L2_MBUS_FMT_SGRBG12_1X12) {
+		*line_len = width << 1;
+	} else if (pix == V4L2_MBUS_FMT_Y8_1X8 ||
+		   pix == V4L2_MBUS_FMT_UV8_1X8) {
+		*line_len = width;
+		*line_len_c = width;
+	} else {
+		/* YUV 420 */
+		/* round width to upper 32 byte boundary */
+		*line_len = width;
+		*line_len_c = width;
+	}
+	/* adjust the line len to be a multiple of 32 */
+	*line_len += 31;
+	*line_len &= ~0x1f;
+	*line_len_c += 31;
+	*line_len_c &= ~0x1f;
+}
+
+static inline int
+resizer_validate_output_image_format(struct device *dev,
+				     struct v4l2_mbus_framefmt *format,
+				     int *in_line_len, int *in_line_len_c)
+{
+	if (format->code != V4L2_MBUS_FMT_UYVY8_2X8 &&
+	    format->code != V4L2_MBUS_FMT_Y8_1X8 &&
+	    format->code != V4L2_MBUS_FMT_UV8_1X8 &&
+	    format->code != V4L2_MBUS_FMT_YDYUYDYV8_1X16 &&
+	    format->code != V4L2_MBUS_FMT_SGRBG12_1X12) {
+		dev_err(dev, "Invalid Mbus format, %d\n", format->code);
+		return -EINVAL;
+	}
+	if (!format->width || !format->height) {
+		dev_err(dev, "invalid width or height\n");
+		return -EINVAL;
+	}
+	resizer_calculate_line_length(format->code, format->width,
+		format->height, in_line_len, in_line_len_c);
+	return 0;
+}
+
+static void
+resizer_configure_passthru(struct vpfe_resizer_device *resizer, int bypass)
+{
+	struct resizer_params *param = &resizer->config;
+
+	param->rsz_rsc_param[RSZ_A].cen = DISABLE;
+	param->rsz_rsc_param[RSZ_A].yen = DISABLE;
+	param->rsz_rsc_param[RSZ_A].v_phs_y = 0;
+	param->rsz_rsc_param[RSZ_A].v_phs_c = 0;
+	param->rsz_rsc_param[RSZ_A].v_dif = 256;
+	param->rsz_rsc_param[RSZ_A].v_lpf_int_y = 0;
+	param->rsz_rsc_param[RSZ_A].v_lpf_int_c = 0;
+	param->rsz_rsc_param[RSZ_A].h_phs = 0;
+	param->rsz_rsc_param[RSZ_A].h_dif = 256;
+	param->rsz_rsc_param[RSZ_A].h_lpf_int_y = 0;
+	param->rsz_rsc_param[RSZ_A].h_lpf_int_c = 0;
+	param->rsz_rsc_param[RSZ_A].dscale_en = DISABLE;
+	param->rsz2rgb[RSZ_A].rgb_en = DISABLE;
+	param->rsz_en[RSZ_A] = ENABLE;
+	param->rsz_en[RSZ_B] = DISABLE;
+	if (bypass) {
+		param->rsz_rsc_param[RSZ_A].i_vps = 0;
+		param->rsz_rsc_param[RSZ_A].i_hps = 0;
+		/* Raw Bypass */
+		param->rsz_common.passthrough = BYPASS_ON;
+	}
+}
+
+static void
+configure_resizer_out_params(struct vpfe_resizer_device *resizer, int index,
+			     void *output_spec, unsigned char partial,
+			     unsigned flag)
+{
+	struct resizer_params *param = &resizer->config;
+	struct v4l2_mbus_framefmt *outformat;
+	struct vpfe_rsz_output_spec *output;
+
+	if (index == RSZ_A &&
+	    resizer->resizer_a.output == RESIZER_OUTPUT_NONE) {
+		param->rsz_en[index] = DISABLE;
+		return;
+	}
+	if (index == RSZ_B &&
+	    resizer->resizer_b.output == RESIZER_OUTPUT_NONE) {
+		param->rsz_en[index] = DISABLE;
+		return;
+	}
+	output = (struct vpfe_rsz_output_spec *)output_spec;
+	param->rsz_en[index] = ENABLE;
+	if (partial) {
+		param->rsz_rsc_param[index].h_flip = output->h_flip;
+		param->rsz_rsc_param[index].v_flip = output->v_flip;
+		param->rsz_rsc_param[index].v_typ_y = output->v_typ_y;
+		param->rsz_rsc_param[index].v_typ_c = output->v_typ_c;
+		param->rsz_rsc_param[index].v_lpf_int_y =
+						output->v_lpf_int_y;
+		param->rsz_rsc_param[index].v_lpf_int_c =
+						output->v_lpf_int_c;
+		param->rsz_rsc_param[index].h_typ_y = output->h_typ_y;
+		param->rsz_rsc_param[index].h_typ_c = output->h_typ_c;
+		param->rsz_rsc_param[index].h_lpf_int_y =
+						output->h_lpf_int_y;
+		param->rsz_rsc_param[index].h_lpf_int_c =
+						output->h_lpf_int_c;
+		param->rsz_rsc_param[index].dscale_en =
+						output->en_down_scale;
+		param->rsz_rsc_param[index].h_dscale_ave_sz =
+						output->h_dscale_ave_sz;
+		param->rsz_rsc_param[index].v_dscale_ave_sz =
+						output->v_dscale_ave_sz;
+		param->ext_mem_param[index].user_y_ofst =
+				    (output->user_y_ofst + 31) & ~0x1f;
+		param->ext_mem_param[index].user_c_ofst =
+				    (output->user_c_ofst + 31) & ~0x1f;
+		return;
+	}
+
+	if (index == RSZ_A)
+		outformat = &resizer->resizer_a.formats[RESIZER_PAD_SOURCE];
+	else
+		outformat = &resizer->resizer_b.formats[RESIZER_PAD_SOURCE];
+	param->rsz_rsc_param[index].o_vsz = outformat->height - 1;
+	param->rsz_rsc_param[index].o_hsz = outformat->width - 1;
+	param->ext_mem_param[index].rsz_sdr_ptr_s_y = output->vst_y;
+	param->ext_mem_param[index].rsz_sdr_ptr_e_y = outformat->height;
+	param->ext_mem_param[index].rsz_sdr_ptr_s_c = output->vst_c;
+	param->ext_mem_param[index].rsz_sdr_ptr_e_c = outformat->height;
+
+	if (!flag)
+		return;
+	/* update common parameters */
+	param->rsz_rsc_param[index].h_flip = output->h_flip;
+	param->rsz_rsc_param[index].v_flip = output->v_flip;
+	param->rsz_rsc_param[index].v_typ_y = output->v_typ_y;
+	param->rsz_rsc_param[index].v_typ_c = output->v_typ_c;
+	param->rsz_rsc_param[index].v_lpf_int_y = output->v_lpf_int_y;
+	param->rsz_rsc_param[index].v_lpf_int_c = output->v_lpf_int_c;
+	param->rsz_rsc_param[index].h_typ_y = output->h_typ_y;
+	param->rsz_rsc_param[index].h_typ_c = output->h_typ_c;
+	param->rsz_rsc_param[index].h_lpf_int_y = output->h_lpf_int_y;
+	param->rsz_rsc_param[index].h_lpf_int_c = output->h_lpf_int_c;
+	param->rsz_rsc_param[index].dscale_en = output->en_down_scale;
+	param->rsz_rsc_param[index].h_dscale_ave_sz = output->h_dscale_ave_sz;
+	param->rsz_rsc_param[index].v_dscale_ave_sz = output->h_dscale_ave_sz;
+	param->ext_mem_param[index].user_y_ofst =
+					(output->user_y_ofst + 31) & ~0x1f;
+	param->ext_mem_param[index].user_c_ofst =
+					(output->user_c_ofst + 31) & ~0x1f;
+}
+
+/*
+ * resizer_calculate_resize_ratios() - Calculates resize ratio for resizer
+ *				      A or B. This is called after setting
+ *				     the input size or output size.
+ * @resizer: Pointer to VPFE resizer subdevice.
+ * @index: index RSZ_A-resizer-A RSZ_B-resizer-B.
+ */
+void
+resizer_calculate_resize_ratios(struct vpfe_resizer_device *resizer, int index)
+{
+	struct resizer_params *param = &resizer->config;
+	struct v4l2_mbus_framefmt *informat, *outformat;
+
+	informat = &resizer->crop_resizer.formats[RESIZER_CROP_PAD_SINK];
+
+	if (index == RSZ_A)
+		outformat = &resizer->resizer_a.formats[RESIZER_PAD_SOURCE];
+	else
+		outformat = &resizer->resizer_b.formats[RESIZER_PAD_SOURCE];
+
+	if (outformat->field != V4L2_FIELD_INTERLACED)
+		param->rsz_rsc_param[index].v_dif =
+			((informat->height) * 256) / (outformat->height);
+	else
+		param->rsz_rsc_param[index].v_dif =
+			((informat->height >> 1) * 256) / (outformat->height);
+	param->rsz_rsc_param[index].h_dif =
+			((informat->width) * 256) / (outformat->width);
+}
+
+void
+static resizer_enable_422_420_conversion(struct resizer_params *param,
+					 int index, bool en)
+{
+	param->rsz_rsc_param[index].cen = en;
+	param->rsz_rsc_param[index].yen = en;
+}
+
+/* resizer_calculate_sdram_offsets() - This function calculates the offsets from
+ *				       start of buffer for the C plane when
+ *				       output format is YUV420SP. It also
+ *				       calculates the offsets from the start of
+ *				       the buffer when the image is flipped
+ *				       vertically or horizontally for ycbcr/y/c
+ *				       planes.
+ * @resizer: Pointer to resizer subdevice.
+ * @index: index RSZ_A-resizer-A RSZ_B-resizer-B.
+ */
+static int
+resizer_calculate_sdram_offsets(struct vpfe_resizer_device *resizer, int index)
+{
+	struct resizer_params *param = &resizer->config;
+	struct v4l2_mbus_framefmt *outformat;
+	int bytesperpixel = 2;
+	int image_height;
+	int image_width;
+	int yuv_420 = 0;
+	int offset = 0;
+
+	if (index == RSZ_A)
+		outformat = &resizer->resizer_a.formats[RESIZER_PAD_SOURCE];
+	else
+		outformat = &resizer->resizer_b.formats[RESIZER_PAD_SOURCE];
+
+	image_height = outformat->height + 1;
+	image_width = outformat->width + 1;
+	param->ext_mem_param[index].c_offset = 0;
+	param->ext_mem_param[index].flip_ofst_y = 0;
+	param->ext_mem_param[index].flip_ofst_c = 0;
+	if (outformat->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16) {
+		/* YUV 420 */
+		yuv_420 = 1;
+		bytesperpixel = 1;
+	}
+
+	if (param->rsz_rsc_param[index].h_flip)
+		/* width * bytesperpixel - 1 */
+		offset = (image_width * bytesperpixel) - 1;
+	if (param->rsz_rsc_param[index].v_flip)
+		offset += (image_height - 1) *
+			param->ext_mem_param[index].rsz_sdr_oft_y;
+	param->ext_mem_param[index].flip_ofst_y = offset;
+	if (!yuv_420)
+		return 0;
+	offset = 0;
+	/* half height for c-plane */
+	if (param->rsz_rsc_param[index].h_flip)
+		/* width * bytesperpixel - 1 */
+		offset = image_width - 1;
+	if (param->rsz_rsc_param[index].v_flip)
+		offset += (((image_height >> 1) - 1) *
+			   param->ext_mem_param[index].rsz_sdr_oft_c);
+	param->ext_mem_param[index].flip_ofst_c = offset;
+	param->ext_mem_param[index].c_offset =
+		      param->ext_mem_param[index].rsz_sdr_oft_y * image_height;
+	return 0;
+}
+
+int resizer_configure_output_win(struct vpfe_resizer_device *resizer)
+{
+	struct resizer_params *param = &resizer->config;
+	struct vpfe_rsz_output_spec output_specs;
+	struct v4l2_mbus_framefmt *outformat;
+	int line_len_c;
+	int line_len;
+	int ret;
+
+	outformat = &resizer->resizer_a.formats[RESIZER_PAD_SOURCE];
+
+	output_specs.vst_y = param->user_config.vst;
+	if (outformat->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16)
+		output_specs.vst_c = param->user_config.vst;
+
+	configure_resizer_out_params(resizer, RSZ_A, &output_specs, 0, 0);
+	resizer_calculate_line_length(outformat->code,
+				      param->rsz_rsc_param[0].o_hsz + 1,
+				      param->rsz_rsc_param[0].o_vsz + 1,
+				      &line_len, &line_len_c);
+	param->ext_mem_param[0].rsz_sdr_oft_y = line_len;
+	param->ext_mem_param[0].rsz_sdr_oft_c = line_len_c;
+	resizer_calculate_resize_ratios(resizer, RSZ_A);
+	if (param->rsz_en[RSZ_B])
+		resizer_calculate_resize_ratios(resizer, RSZ_B);
+
+	if (outformat->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16)
+		resizer_enable_422_420_conversion(param, RSZ_A, ENABLE);
+	else
+		resizer_enable_422_420_conversion(param, RSZ_A, DISABLE);
+
+	ret = resizer_calculate_sdram_offsets(resizer, RSZ_A);
+	if (!ret && param->rsz_en[RSZ_B])
+		ret = resizer_calculate_sdram_offsets(resizer, RSZ_B);
+
+	if (ret)
+		pr_err("Error in calculating sdram offsets\n");
+	return ret;
+}
+
+static int
+resizer_calculate_down_scale_f_div_param(struct device *dev,
+					 int input_width, int output_width,
+					 struct resizer_scale_param *param)
+{
+	/* rsz = R, input_width = H, output width = h in the equation */
+	unsigned int two_power;
+	unsigned int upper_h1;
+	unsigned int upper_h2;
+	unsigned int val1;
+	unsigned int val;
+	unsigned int rsz;
+	unsigned int h1;
+	unsigned int h2;
+	unsigned int o;
+	unsigned int n;
+
+	upper_h1 = input_width >> 1;
+	n = param->h_dscale_ave_sz;
+	/* 2 ^ (scale+1) */
+	two_power = 1 << (n + 1);
+	upper_h1 = (upper_h1 >> (n + 1)) << (n + 1);
+	upper_h2 = input_width - upper_h1;
+	if (upper_h2 % two_power) {
+		dev_err(dev, "frame halves to be a multiple of 2 power n+1\n");
+		return -EINVAL;
+	}
+	two_power = 1 << n;
+	rsz = (input_width << 8) / output_width;
+	val = rsz * two_power;
+	val = ((upper_h1 << 8) / val) + 1;
+	if (!(val % 2)) {
+		h1 = val;
+	} else {
+		val = upper_h1 << 8;
+		val >>= n + 1;
+		val -= rsz >> 1;
+		val /= rsz << 1;
+		val <<= 1;
+		val += 2;
+		h1 = val;
+	}
+	o = 10 + (two_power << 2);
+	if (((input_width << 7) / rsz) % 2)
+		o += (((CEIL(rsz, 1024)) << 1) << n);
+	h2 = output_width - h1;
+	/* phi */
+	val = (h1 * rsz) - (((upper_h1 - (o - 10)) / two_power) << 8);
+	/* skip */
+	val1 = ((val - 1024) >> 9) << 1;
+	param->f_div.num_passes = MAX_PASSES;
+	param->f_div.pass[0].o_hsz = h1 - 1;
+	param->f_div.pass[0].i_hps = 0;
+	param->f_div.pass[0].h_phs = 0;
+	param->f_div.pass[0].src_hps = 0;
+	param->f_div.pass[0].src_hsz = upper_h1 + o;
+	param->f_div.pass[1].o_hsz = h2 - 1;
+	param->f_div.pass[1].i_hps = 10 + (val1 * two_power);
+	param->f_div.pass[1].h_phs = (val - (val1 << 8));
+	param->f_div.pass[1].src_hps = upper_h1 - o;
+	param->f_div.pass[1].src_hsz = upper_h2 + o;
+
+	return 0;
+}
+
+static int
+resizer_configure_common_in_params(struct vpfe_resizer_device *resizer)
+{
+	struct vpfe_device *vpfe_dev = to_vpfe_device(resizer);
+	struct resizer_params *param = &resizer->config;
+	struct vpfe_rsz_config_params *user_config;
+	struct v4l2_mbus_framefmt *informat;
+
+	informat = &resizer->crop_resizer.formats[RESIZER_CROP_PAD_SINK];
+	user_config = &resizer->config.user_config;
+	param->rsz_common.vps = param->user_config.vst;
+	param->rsz_common.hps = param->user_config.hst;
+
+	if (vpfe_ipipeif_decimation_enabled(vpfe_dev))
+		param->rsz_common.hsz = (((informat->width - 1) *
+			IPIPEIF_RSZ_CONST) / vpfe_ipipeif_get_rsz(vpfe_dev));
+	else
+		param->rsz_common.hsz = informat->width - 1;
+
+	if (informat->field == V4L2_FIELD_INTERLACED)
+		param->rsz_common.vsz  = (informat->height - 1) >> 1;
+	else
+		param->rsz_common.vsz  = informat->height - 1;
+
+	param->rsz_common.raw_flip = 0;
+
+	if (resizer->crop_resizer.input == RESIZER_CROP_INPUT_IPIPEIF)
+		param->rsz_common.source = IPIPEIF_DATA;
+	else
+		param->rsz_common.source = IPIPE_DATA;
+
+	switch (informat->code) {
+	case V4L2_MBUS_FMT_UYVY8_2X8:
+		param->rsz_common.src_img_fmt = RSZ_IMG_422;
+		param->rsz_common.raw_flip = 0;
+		break;
+
+	case V4L2_MBUS_FMT_Y8_1X8:
+		param->rsz_common.src_img_fmt = RSZ_IMG_420;
+		/* Select y */
+		param->rsz_common.y_c = 0;
+		param->rsz_common.raw_flip = 0;
+		break;
+
+	case V4L2_MBUS_FMT_UV8_1X8:
+		param->rsz_common.src_img_fmt = RSZ_IMG_420;
+		/* Select y */
+		param->rsz_common.y_c = 1;
+		param->rsz_common.raw_flip = 0;
+		break;
+
+	case V4L2_MBUS_FMT_SGRBG12_1X12:
+		param->rsz_common.raw_flip = 1;
+		break;
+
+	default:
+		param->rsz_common.src_img_fmt = RSZ_IMG_422;
+		param->rsz_common.source = IPIPE_DATA;
+	}
+
+	param->rsz_common.yuv_y_min = user_config->yuv_y_min;
+	param->rsz_common.yuv_y_max = user_config->yuv_y_max;
+	param->rsz_common.yuv_c_min = user_config->yuv_c_min;
+	param->rsz_common.yuv_c_max = user_config->yuv_c_max;
+	param->rsz_common.out_chr_pos = user_config->out_chr_pos;
+	param->rsz_common.rsz_seq_crv = user_config->chroma_sample_even;
+
+	return 0;
+}
+static int
+resizer_configure_in_continious_mode(struct vpfe_resizer_device *resizer)
+{
+	struct device *dev = resizer->crop_resizer.subdev.v4l2_dev->dev;
+	struct resizer_params *param = &resizer->config;
+	struct vpfe_rsz_config_params *cont_config;
+	int line_len_c;
+	int line_len;
+	int ret;
+
+	if (resizer->resizer_a.output != RESIZER_OUPUT_MEMORY) {
+		dev_err(dev, "enable resizer - Resizer-A\n");
+		return -EINVAL;
+	}
+
+	cont_config = &resizer->config.user_config;
+	param->rsz_en[RSZ_A] = ENABLE;
+	configure_resizer_out_params(resizer, RSZ_A,
+				     &cont_config->output1, 1, 0);
+	param->rsz_en[RSZ_B] = DISABLE;
+	param->oper_mode = RESIZER_MODE_CONTINIOUS;
+
+	if (resizer->resizer_b.output == RESIZER_OUPUT_MEMORY) {
+		struct v4l2_mbus_framefmt *outformat2;
+
+		param->rsz_en[RSZ_B] = ENABLE;
+		outformat2 = &resizer->resizer_b.formats[RESIZER_PAD_SOURCE];
+		ret = resizer_validate_output_image_format(dev, outformat2,
+				&line_len, &line_len_c);
+		if (ret)
+			return ret;
+		param->ext_mem_param[RSZ_B].rsz_sdr_oft_y = line_len;
+		param->ext_mem_param[RSZ_B].rsz_sdr_oft_c = line_len_c;
+		configure_resizer_out_params(resizer, RSZ_B,
+						&cont_config->output2, 0, 1);
+		if (outformat2->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16)
+			resizer_enable_422_420_conversion(param,
+							  RSZ_B, ENABLE);
+		else
+			resizer_enable_422_420_conversion(param,
+							  RSZ_B, DISABLE);
+	}
+	resizer_configure_common_in_params(resizer);
+	ret = resizer_configure_output_win(resizer);
+	if (ret)
+		return ret;
+
+	param->rsz_common.passthrough = cont_config->bypass;
+	if (cont_config->bypass)
+		resizer_configure_passthru(resizer, 1);
+
+	return 0;
+}
+
+static inline int
+resizer_validate_input_image_format(struct device *dev,
+				    enum v4l2_mbus_pixelcode pix,
+				    int width, int height, int *line_len)
+{
+	int val;
+
+	if (pix != V4L2_MBUS_FMT_UYVY8_2X8 &&
+	    pix != V4L2_MBUS_FMT_Y8_1X8 &&
+	    pix != V4L2_MBUS_FMT_UV8_1X8 &&
+	    pix != V4L2_MBUS_FMT_SGRBG12_1X12) {
+		dev_err(dev,
+		"resizer validate output: pix format not supported, %d\n", pix);
+		return -EINVAL;
+	}
+
+	if (!width || !height) {
+		dev_err(dev,
+			"resizer validate input: invalid width or height\n");
+		return -EINVAL;
+	}
+
+	if (pix == V4L2_MBUS_FMT_UV8_1X8)
+		resizer_calculate_line_length(pix, width,
+					      height, &val, line_len);
+	else
+		resizer_calculate_line_length(pix, width,
+					      height, line_len, &val);
+
+	return 0;
+}
+
+static int
+resizer_validate_decimation(struct device *dev, enum ipipeif_decimation dec_en,
+			    unsigned char rsz, unsigned char frame_div_mode_en,
+			    int width)
+{
+	if (dec_en && frame_div_mode_en) {
+		dev_err(dev,
+		 "dec_en & frame_div_mode_en can not enabled simultaneously\n");
+		return -EINVAL;
+	}
+
+	if (frame_div_mode_en) {
+		dev_err(dev, "frame_div_mode mode not supported\n");
+		return -EINVAL;
+	}
+
+	if (!dec_en)
+		return 0;
+
+	if (width <= VPFE_IPIPE_MAX_INPUT_WIDTH) {
+		dev_err(dev,
+			"image width to be more than %d for decimation\n",
+			VPFE_IPIPE_MAX_INPUT_WIDTH);
+		return -EINVAL;
+	}
+
+	if (rsz < IPIPEIF_RSZ_MIN || rsz > IPIPEIF_RSZ_MAX) {
+		dev_err(dev, "rsz range is %d to %d\n",
+			IPIPEIF_RSZ_MIN, IPIPEIF_RSZ_MAX);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* resizer_calculate_normal_f_div_param() - Algorithm to calculate the frame
+ *					    division parameters for resizer.
+ *					    in normal mode.
+ */
+static int
+resizer_calculate_normal_f_div_param(struct device *dev, int input_width,
+		int output_width, struct resizer_scale_param *param)
+{
+	/* rsz = R, input_width = H, output width = h in the equation */
+	unsigned int val1;
+	unsigned int rsz;
+	unsigned int val;
+	unsigned int h1;
+	unsigned int h2;
+	unsigned int o;
+
+	if (output_width > input_width) {
+		dev_err(dev, "frame div mode is used for scale down only\n");
+		return -EINVAL;
+	}
+
+	rsz = (input_width << 8) / output_width;
+	val = rsz << 1;
+	val = ((input_width << 8) / val) + 1;
+	o = 14;
+	if (!(val % 2)) {
+		h1 = val;
+	} else {
+		val = (input_width << 7);
+		val -= rsz >> 1;
+		val /= rsz << 1;
+		val <<= 1;
+		val += 2;
+		o += ((CEIL(rsz, 1024)) << 1);
+		h1 = val;
+	}
+	h2 = output_width - h1;
+	/* phi */
+	val = (h1 * rsz) - (((input_width >> 1) - o) << 8);
+	/* skip */
+	val1 = ((val - 1024) >> 9) << 1;
+	param->f_div.num_passes = MAX_PASSES;
+	param->f_div.pass[0].o_hsz = h1 - 1;
+	param->f_div.pass[0].i_hps = 0;
+	param->f_div.pass[0].h_phs = 0;
+	param->f_div.pass[0].src_hps = 0;
+	param->f_div.pass[0].src_hsz = (input_width >> 2) + o;
+	param->f_div.pass[1].o_hsz = h2 - 1;
+	param->f_div.pass[1].i_hps = val1;
+	param->f_div.pass[1].h_phs = (val - (val1 << 8));
+	param->f_div.pass[1].src_hps = (input_width >> 2) - o;
+	param->f_div.pass[1].src_hsz = (input_width >> 2) + o;
+
+	return 0;
+}
+
+static int
+resizer_configure_in_single_shot_mode(struct vpfe_resizer_device *resizer)
+{
+	struct vpfe_rsz_config_params *config = &resizer->config.user_config;
+	struct device *dev = resizer->crop_resizer.subdev.v4l2_dev->dev;
+	struct vpfe_device *vpfe_dev = to_vpfe_device(resizer);
+	struct v4l2_mbus_framefmt *outformat1, *outformat2;
+	struct resizer_params *param = &resizer->config;
+	struct v4l2_mbus_framefmt *informat;
+	int decimation;
+	int line_len_c;
+	int line_len;
+	int rsz;
+	int ret;
+
+	informat = &resizer->crop_resizer.formats[RESIZER_CROP_PAD_SINK];
+	outformat1 = &resizer->resizer_a.formats[RESIZER_PAD_SOURCE];
+	outformat2 = &resizer->resizer_b.formats[RESIZER_PAD_SOURCE];
+
+	decimation = vpfe_ipipeif_decimation_enabled(vpfe_dev);
+	rsz = vpfe_ipipeif_get_rsz(vpfe_dev);
+	if (decimation && param->user_config.frame_div_mode_en) {
+		dev_err(dev,
+		"dec_en & frame_div_mode_en cannot enabled simultaneously\n");
+		return -EINVAL;
+	}
+
+	ret = resizer_validate_decimation(dev, decimation, rsz,
+	      param->user_config.frame_div_mode_en, informat->width);
+	if (ret)
+		return -EINVAL;
+
+	ret = resizer_validate_input_image_format(dev, informat->code,
+		informat->width, informat->height, &line_len);
+	if (ret)
+		return -EINVAL;
+
+	if (resizer->resizer_a.output != RESIZER_OUTPUT_NONE) {
+		param->rsz_en[RSZ_A] = ENABLE;
+		ret = resizer_validate_output_image_format(dev, outformat1,
+					&line_len, &line_len_c);
+		if (ret)
+			return ret;
+		param->ext_mem_param[RSZ_A].rsz_sdr_oft_y = line_len;
+		param->ext_mem_param[RSZ_A].rsz_sdr_oft_c = line_len_c;
+		configure_resizer_out_params(resizer, RSZ_A,
+					&param->user_config.output1, 0, 1);
+
+		if (outformat1->code == V4L2_MBUS_FMT_SGRBG12_1X12)
+			param->rsz_common.raw_flip = 1;
+		else
+			param->rsz_common.raw_flip = 0;
+
+		if (outformat1->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16)
+			resizer_enable_422_420_conversion(param,
+							  RSZ_A, ENABLE);
+		else
+			resizer_enable_422_420_conversion(param,
+							  RSZ_A, DISABLE);
+	}
+
+	if (resizer->resizer_b.output != RESIZER_OUTPUT_NONE) {
+		param->rsz_en[RSZ_B] = ENABLE;
+		ret = resizer_validate_output_image_format(dev, outformat2,
+				&line_len, &line_len_c);
+		if (ret)
+			return ret;
+		param->ext_mem_param[RSZ_B].rsz_sdr_oft_y = line_len;
+		param->ext_mem_param[RSZ_B].rsz_sdr_oft_c = line_len_c;
+		configure_resizer_out_params(resizer, RSZ_B,
+					&param->user_config.output2, 0, 1);
+		if (outformat2->code == V4L2_MBUS_FMT_YDYUYDYV8_1X16)
+			resizer_enable_422_420_conversion(param,
+							  RSZ_B, ENABLE);
+		else
+			resizer_enable_422_420_conversion(param,
+							  RSZ_B, DISABLE);
+	}
+
+	resizer_configure_common_in_params(resizer);
+	if (resizer->resizer_a.output != RESIZER_OUTPUT_NONE) {
+		resizer_calculate_resize_ratios(resizer, RSZ_A);
+		resizer_calculate_sdram_offsets(resizer, RSZ_A);
+		/* Overriding resize ratio calculation */
+		if (informat->code == V4L2_MBUS_FMT_UV8_1X8) {
+			param->rsz_rsc_param[RSZ_A].v_dif =
+				(((informat->height + 1) * 2) * 256) /
+				(param->rsz_rsc_param[RSZ_A].o_vsz + 1);
+		}
+	}
+
+	if (resizer->resizer_b.output != RESIZER_OUTPUT_NONE) {
+		resizer_calculate_resize_ratios(resizer, RSZ_B);
+		resizer_calculate_sdram_offsets(resizer, RSZ_B);
+		/* Overriding resize ratio calculation */
+		if (informat->code == V4L2_MBUS_FMT_UV8_1X8) {
+			param->rsz_rsc_param[RSZ_B].v_dif =
+				(((informat->height + 1) * 2) * 256) /
+				(param->rsz_rsc_param[RSZ_B].o_vsz + 1);
+		}
+	}
+	if (param->user_config.frame_div_mode_en &&
+		param->rsz_en[RSZ_A]) {
+		if (!param->rsz_rsc_param[RSZ_A].dscale_en)
+			ret = resizer_calculate_normal_f_div_param(dev,
+			      informat->width,
+			      param->rsz_rsc_param[RSZ_A].o_vsz + 1,
+			      &param->rsz_rsc_param[RSZ_A]);
+		else
+			ret = resizer_calculate_down_scale_f_div_param(dev,
+			      informat->width,
+			      param->rsz_rsc_param[RSZ_A].o_vsz + 1,
+			      &param->rsz_rsc_param[RSZ_A]);
+		if (ret)
+			return -EINVAL;
+	}
+	if (param->user_config.frame_div_mode_en &&
+		param->rsz_en[RSZ_B]) {
+		if (!param->rsz_rsc_param[RSZ_B].dscale_en)
+			ret = resizer_calculate_normal_f_div_param(dev,
+			      informat->width,
+			      param->rsz_rsc_param[RSZ_B].o_vsz + 1,
+			      &param->rsz_rsc_param[RSZ_B]);
+		else
+			ret = resizer_calculate_down_scale_f_div_param(dev,
+			      informat->width,
+			      param->rsz_rsc_param[RSZ_B].o_vsz + 1,
+			      &param->rsz_rsc_param[RSZ_B]);
+		if (ret)
+			return -EINVAL;
+	}
+	param->rsz_common.passthrough = config->bypass;
+	if (config->bypass)
+		resizer_configure_passthru(resizer, 1);
+	return 0;
+}
+
+static void
+resizer_set_defualt_configuration(struct vpfe_resizer_device *resizer)
+{
+#define  WIDTH_I 640
+#define  HEIGHT_I 480
+#define  WIDTH_O 640
+#define  HEIGHT_O 480
+	const struct resizer_params rsz_default_config = {
+		.oper_mode = RESIZER_MODE_ONE_SHOT,
+		.rsz_common = {
+			.vsz = HEIGHT_I - 1,
+			.hsz = WIDTH_I - 1,
+			.src_img_fmt = RSZ_IMG_422,
+			.raw_flip = 1,	/* flip preserve Raw format */
+			.source = IPIPE_DATA,
+			.passthrough = BYPASS_OFF,
+			.yuv_y_max = 255,
+			.yuv_c_max = 255,
+			.rsz_seq_crv = DISABLE,
+			.out_chr_pos = VPFE_IPIPE_YUV422_CHR_POS_COSITE,
+		},
+		.rsz_rsc_param = {
+			{
+				.h_flip = DISABLE,
+				.v_flip = DISABLE,
+				.cen = DISABLE,
+				.yen = DISABLE,
+				.o_vsz = HEIGHT_O - 1,
+				.o_hsz = WIDTH_O - 1,
+				.v_dif = 256,
+				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dif = 256,
+				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+				.v_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+			},
+			{
+				.h_flip = DISABLE,
+				.v_flip = DISABLE,
+				.cen = DISABLE,
+				.yen = DISABLE,
+				.o_vsz = HEIGHT_O - 1,
+				.o_hsz = WIDTH_O - 1,
+				.v_dif = 256,
+				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dif = 256,
+				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+				.v_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+			},
+		},
+		.rsz2rgb = {
+			{
+				.rgb_en = DISABLE
+			},
+			{
+				.rgb_en = DISABLE
+			}
+		},
+		.ext_mem_param = {
+			{
+				.rsz_sdr_oft_y = WIDTH_O << 1,
+				.rsz_sdr_ptr_e_y = HEIGHT_O,
+				.rsz_sdr_oft_c = WIDTH_O,
+				.rsz_sdr_ptr_e_c = HEIGHT_O >> 1,
+			},
+			{
+				.rsz_sdr_oft_y = WIDTH_O << 1,
+				.rsz_sdr_ptr_e_y = HEIGHT_O,
+				.rsz_sdr_oft_c = WIDTH_O,
+				.rsz_sdr_ptr_e_c = HEIGHT_O,
+			},
+		},
+		.rsz_en[0] = ENABLE,
+		.rsz_en[1] = DISABLE,
+		.user_config = {
+			.output1 = {
+				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.v_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+				.v_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+			},
+			.output2 = {
+				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.v_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
+				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
+				.h_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+				.v_dscale_ave_sz =
+					VPFE_IPIPE_DWN_SCALE_1_OVER_2,
+			},
+			.yuv_y_max = 255,
+			.yuv_c_max = 255,
+			.out_chr_pos = VPFE_IPIPE_YUV422_CHR_POS_COSITE,
+		},
+	};
+	memset(&resizer->config, 0, sizeof(struct resizer_params));
+	memcpy(&resizer->config, &rsz_default_config,
+	       sizeof(struct resizer_params));
+}
+
+/*
+ * resizer_set_configuration() - set resizer config
+ * @resizer: vpfe resizer device pointer.
+ * @chan_config: resizer channel configuration.
+ */
+static int
+resizer_set_configuration(struct vpfe_resizer_device *resizer,
+			  struct vpfe_rsz_config *chan_config)
+{
+	if (!chan_config->config)
+		resizer_set_defualt_configuration(resizer);
+	else
+		if (copy_from_user(&resizer->config.user_config,
+		    chan_config->config, sizeof(struct vpfe_rsz_config_params)))
+			return -EFAULT;
+
+	return 0;
+}
+
+/*
+ * resizer_get_configuration() - get resizer config
+ * @resizer: vpfe resizer device pointer.
+ * @channel: image processor logical channel.
+ * @chan_config: resizer channel configuration.
+ */
+static int
+resizer_get_configuration(struct vpfe_resizer_device *resizer,
+		   struct vpfe_rsz_config *chan_config)
+{
+	struct device *dev = resizer->crop_resizer.subdev.v4l2_dev->dev;
+
+	if (!chan_config->config) {
+		dev_err(dev, "Resizer channel invalid pointer\n");
+		return -EINVAL;
+	}
+
+	if (copy_to_user((void *)chan_config->config,
+	   (void *)&resizer->config.user_config,
+	   sizeof(struct vpfe_rsz_config_params))) {
+		dev_err(dev, "resizer_get_configuration: Error in copy to user\n");
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/*
+ * VPFE video operations
+ */
+
+/*
+ * resizer_a_video_out_queue() - RESIZER-A video out queue
+ * @vpfe_dev: vpfe device pointer.
+ * @addr: buffer address.
+ */
+static int resizer_a_video_out_queue(struct vpfe_device *vpfe_dev,
+				     unsigned long addr)
+{
+	struct vpfe_resizer_device *resizer = &vpfe_dev->vpfe_resizer;
+
+	return resizer_set_outaddr(resizer->base_addr,
+				      &resizer->config, RSZ_A, addr);
+}
+
+/*
+ * resizer_b_video_out_queue() - RESIZER-B video out queue
+ * @vpfe_dev: vpfe device pointer.
+ * @addr: buffer address.
+ */
+static int resizer_b_video_out_queue(struct vpfe_device *vpfe_dev,
+				     unsigned long addr)
+{
+	struct vpfe_resizer_device *resizer = &vpfe_dev->vpfe_resizer;
+
+	return resizer_set_outaddr(resizer->base_addr,
+				   &resizer->config, RSZ_B, addr);
+}
+
+static const struct vpfe_video_operations resizer_a_video_ops = {
+	.queue = resizer_a_video_out_queue,
+};
+
+static const struct vpfe_video_operations resizer_b_video_ops = {
+	.queue = resizer_b_video_out_queue,
+};
+
+static void resizer_enable(struct vpfe_resizer_device *resizer, int en)
+{
+	struct vpfe_device *vpfe_dev = to_vpfe_device(resizer);
+	u16 ipipeif_sink = vpfe_dev->vpfe_ipipeif.input;
+	unsigned char val;
+
+	if (resizer->crop_resizer.input == RESIZER_CROP_INPUT_NONE)
+		return;
+
+	if (resizer->crop_resizer.input == RESIZER_CROP_INPUT_IPIPEIF &&
+	   ipipeif_sink == IPIPEIF_INPUT_MEMORY) {
+		do {
+			val = regr_rsz(resizer->base_addr, RSZ_SRC_EN);
+		} while (val);
+
+		if (resizer->resizer_a.output != RESIZER_OUTPUT_NONE) {
+			do {
+				val = regr_rsz(resizer->base_addr, RSZ_A);
+			} while (val);
+		}
+		if (resizer->resizer_b.output != RESIZER_OUTPUT_NONE) {
+			do {
+				val = regr_rsz(resizer->base_addr, RSZ_B);
+			} while (val);
+		}
+	}
+	if (resizer->resizer_a.output != RESIZER_OUTPUT_NONE)
+		rsz_enable(resizer->base_addr, RSZ_A, en);
+
+	if (resizer->resizer_b.output != RESIZER_OUTPUT_NONE)
+		rsz_enable(resizer->base_addr, RSZ_B, en);
+}
+
+
+/*
+ * resizer_ss_isr() - resizer module single-shot buffer scheduling isr
+ * @resizer: vpfe resizer device pointer.
+ */
+static void resizer_ss_isr(struct vpfe_resizer_device *resizer)
+{
+	struct vpfe_video_device *video_out = &resizer->resizer_a.video_out;
+	struct vpfe_video_device *video_out2 = &resizer->resizer_b.video_out;
+	struct vpfe_device *vpfe_dev = to_vpfe_device(resizer);
+	struct vpfe_pipeline *pipe = &video_out->pipe;
+	u16 ipipeif_sink = vpfe_dev->vpfe_ipipeif.input;
+	u32 val;
+
+	if (ipipeif_sink != IPIPEIF_INPUT_MEMORY)
+		return;
+
+	if (resizer->resizer_a.output == RESIZER_OUPUT_MEMORY) {
+		val = vpss_dma_complete_interrupt();
+		if (val != 0 && val != 2)
+			return;
+	}
+
+	if (resizer->resizer_a.output == RESIZER_OUPUT_MEMORY) {
+		spin_lock(&video_out->dma_queue_lock);
+		vpfe_video_process_buffer_complete(video_out);
+		video_out->state = VPFE_VIDEO_BUFFER_NOT_QUEUED;
+		vpfe_video_schedule_next_buffer(video_out);
+		spin_unlock(&video_out->dma_queue_lock);
+	}
+
+	/* If resizer B is enabled */
+	if (pipe->output_num > 1 && resizer->resizer_b.output ==
+	    RESIZER_OUPUT_MEMORY) {
+		spin_lock(&video_out->dma_queue_lock);
+		vpfe_video_process_buffer_complete(video_out2);
+		video_out2->state = VPFE_VIDEO_BUFFER_NOT_QUEUED;