[media] media: platform: add VPFE capture driver support for AM437X
authorBenoit Parrot <bparrot@ti.com>
Tue, 9 Dec 2014 19:43:44 +0000 (16:43 -0300)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Tue, 23 Dec 2014 14:09:58 +0000 (12:09 -0200)
This patch adds Video Processing Front End (VPFE) driver for
AM437X family of devices
Driver supports the following:
- V4L2 API using MMAP buffer access based on videobuf2 api
- Asynchronous sensor/decoder sub device registration
- DT support

Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
[hans.verkuil@cisco.com: swapped two lines to fix vpfe_release() & add pinctrl include]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt [new file with mode: 0644]
MAINTAINERS
drivers/media/platform/Kconfig
drivers/media/platform/Makefile
drivers/media/platform/am437x/Kconfig [new file with mode: 0644]
drivers/media/platform/am437x/Makefile [new file with mode: 0644]
drivers/media/platform/am437x/am437x-vpfe.c [new file with mode: 0644]
drivers/media/platform/am437x/am437x-vpfe.h [new file with mode: 0644]
drivers/media/platform/am437x/am437x-vpfe_regs.h [new file with mode: 0644]
include/uapi/linux/Kbuild
include/uapi/linux/am437x-vpfe.h [new file with mode: 0644]

diff --git a/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt b/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt
new file mode 100644 (file)
index 0000000..3932e76
--- /dev/null
@@ -0,0 +1,61 @@
+Texas Instruments AM437x CAMERA (VPFE)
+--------------------------------------
+
+The Video Processing Front End (VPFE) is a key component for image capture
+applications. The capture module provides the system interface and the
+processing capability to connect RAW image-sensor modules and video decoders
+to the AM437x device.
+
+Required properties:
+- compatible: must be "ti,am437x-vpfe"
+- reg: physical base address and length of the registers set for the device;
+- interrupts: should contain IRQ line for the VPFE;
+- ti,am437x-vpfe-interface: can be one of the following,
+       0 - Raw Bayer Interface.
+       1 - 8 Bit BT656 Interface.
+       2 - 10 Bit BT656 Interface.
+       3 - YCbCr 8 Bit Interface.
+       4 - YCbCr 16 Bit Interface.
+
+VPFE supports a single port node with parallel bus. It should contain one
+'port' child node with child 'endpoint' node. Please refer to the bindings
+defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+       vpfe: vpfe@f0034000 {
+               compatible = "ti,am437x-vpfe";
+               reg = <0x48328000 0x2000>;
+               interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+
+               pinctrl-names = "default", "sleep";
+               pinctrl-0 = <&vpfe_pins_default>;
+               pinctrl-1 = <&vpfe_pins_sleep>;
+
+               port {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       vpfe0_ep: endpoint {
+                               remote-endpoint = <&ov2659_1>;
+                               ti,am437x-vpfe-interface = <0>;
+                               bus-width = <8>;
+                               hsync-active = <0>;
+                               vsync-active = <0>;
+                       };
+               };
+       };
+
+       i2c1: i2c@4802a000 {
+
+               ov2659@30 {
+                       compatible = "ti,ov2659";
+                       reg = <0x30>;
+
+                       port {
+                               ov2659_1: endpoint {
+                                       remote-endpoint = <&vpfe0_ep>;
+                                       bus-width = <8>;
+                                       mclk-frequency = <12000000>;
+                               };
+                       };
+       };
index dc2d91252d8b4ef2f0e85c3b0fe75ab533fafc9e..4318f348dbd888337f91e31ae8c84c72979dff87 100644 (file)
@@ -8745,6 +8745,15 @@ S:       Maintained
 F:     drivers/media/platform/davinci/
 F:     include/media/davinci/
 
+TI AM437X VPFE DRIVER
+M:     Lad, Prabhakar <prabhakar.csengg@gmail.com>
+L:     linux-media@vger.kernel.org
+W:     http://linuxtv.org/
+Q:     http://patchwork.linuxtv.org/project/linux-media/list/
+T:     git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
+S:     Maintained
+F:     drivers/media/platform/am437x/
+
 SIS 190 ETHERNET DRIVER
 M:     Francois Romieu <romieu@fr.zoreil.com>
 L:     netdev@vger.kernel.org
index 480a174832a692a8cbc735af67bfd9e68343245b..71e8873ceb94cd735ed9ea6e57fb597496047c68 100644 (file)
@@ -118,6 +118,7 @@ config VIDEO_S3C_CAMIF
 source "drivers/media/platform/soc_camera/Kconfig"
 source "drivers/media/platform/exynos4-is/Kconfig"
 source "drivers/media/platform/s5p-tv/Kconfig"
+source "drivers/media/platform/am437x/Kconfig"
 
 endif # V4L_PLATFORM_DRIVERS
 
index a49936b8ce8a5e175e18fb3f5df5142c8590f8b0..3ec15474208360d9f891eb2a19cab55a21c73114 100644 (file)
@@ -46,4 +46,6 @@ obj-$(CONFIG_VIDEO_RENESAS_VSP1)      += vsp1/
 
 obj-y  += omap/
 
+obj-$(CONFIG_VIDEO_AM437X_VPFE)                += am437x/
+
 ccflags-y += -I$(srctree)/drivers/media/i2c
diff --git a/drivers/media/platform/am437x/Kconfig b/drivers/media/platform/am437x/Kconfig
new file mode 100644 (file)
index 0000000..7b023a7
--- /dev/null
@@ -0,0 +1,11 @@
+config VIDEO_AM437X_VPFE
+       tristate "TI AM437x VPFE video capture driver"
+       depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+       depends on SOC_AM43XX || COMPILE_TEST
+       select VIDEOBUF2_DMA_CONTIG
+       help
+          Support for AM437x Video Processing Front End based Video
+          Capture Driver.
+
+          To compile this driver as a module, choose M here. The module
+          will be called am437x-vpfe.
diff --git a/drivers/media/platform/am437x/Makefile b/drivers/media/platform/am437x/Makefile
new file mode 100644 (file)
index 0000000..d11fff1
--- /dev/null
@@ -0,0 +1,3 @@
+# Makefile for AM437x VPFE driver
+
+obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x-vpfe.o
diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
new file mode 100644 (file)
index 0000000..e01ac22
--- /dev/null
@@ -0,0 +1,2778 @@
+/*
+ * TI VPFE capture Driver
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@ti.com>
+ * Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-of.h>
+
+#include "am437x-vpfe.h"
+
+#define VPFE_MODULE_NAME       "vpfe"
+#define VPFE_VERSION           "0.1.0"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level 0-8");
+
+#define vpfe_dbg(level, dev, fmt, arg...)      \
+               v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)
+#define vpfe_info(dev, fmt, arg...)    \
+               v4l2_info(&dev->v4l2_dev, fmt, ##arg)
+#define vpfe_err(dev, fmt, arg...)     \
+               v4l2_err(&dev->v4l2_dev, fmt, ##arg)
+
+/* standard information */
+struct vpfe_standard {
+       v4l2_std_id std_id;
+       unsigned int width;
+       unsigned int height;
+       struct v4l2_fract pixelaspect;
+       int frame_format;
+};
+
+const struct vpfe_standard vpfe_standards[] = {
+       {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
+       {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
+};
+
+struct bus_format {
+       unsigned int width;
+       unsigned int bpp;
+};
+
+/*
+ * struct vpfe_fmt - VPFE media bus format information
+ * @name: V4L2 format description
+ * @code: V4L2 media bus format code
+ * @shifted: V4L2 media bus format code for the same pixel layout but
+ *     shifted to be 8 bits per pixel. =0 if format is not shiftable.
+ * @pixelformat: V4L2 pixel format FCC identifier
+ * @width: Bits per pixel (when transferred over a bus)
+ * @bpp: Bytes per pixel (when stored in memory)
+ * @supported: Indicates format supported by subdev
+ */
+struct vpfe_fmt {
+       const char *name;
+       u32 fourcc;
+       u32 code;
+       struct bus_format l;
+       struct bus_format s;
+       bool supported;
+       u32 index;
+};
+
+static struct vpfe_fmt formats[] = {
+       {
+               .name           = "YUV 4:2:2 packed, YCbYCr",
+               .fourcc         = V4L2_PIX_FMT_YUYV,
+               .code           = MEDIA_BUS_FMT_YUYV8_2X8,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       }, {
+               .name           = "YUV 4:2:2 packed, CbYCrY",
+               .fourcc         = V4L2_PIX_FMT_UYVY,
+               .code           = MEDIA_BUS_FMT_UYVY8_2X8,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       }, {
+               .name           = "YUV 4:2:2 packed, YCrYCb",
+               .fourcc         = V4L2_PIX_FMT_YVYU,
+               .code           = MEDIA_BUS_FMT_YVYU8_2X8,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       }, {
+               .name           = "YUV 4:2:2 packed, CrYCbY",
+               .fourcc         = V4L2_PIX_FMT_VYUY,
+               .code           = MEDIA_BUS_FMT_VYUY8_2X8,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       }, {
+               .name           = "RAW8 BGGR",
+               .fourcc         = V4L2_PIX_FMT_SBGGR8,
+               .code           = MEDIA_BUS_FMT_SBGGR8_1X8,
+               .l.width        = 10,
+               .l.bpp          = 2,
+               .s.width        = 8,
+               .s.bpp          = 1,
+               .supported      = false,
+       }, {
+               .name           = "RAW8 GBRG",
+               .fourcc         = V4L2_PIX_FMT_SGBRG8,
+               .code           = MEDIA_BUS_FMT_SGBRG8_1X8,
+               .l.width        = 10,
+               .l.bpp          = 2,
+               .s.width        = 8,
+               .s.bpp          = 1,
+               .supported      = false,
+       }, {
+               .name           = "RAW8 GRBG",
+               .fourcc         = V4L2_PIX_FMT_SGRBG8,
+               .code           = MEDIA_BUS_FMT_SGRBG8_1X8,
+               .l.width        = 10,
+               .l.bpp          = 2,
+               .s.width        = 8,
+               .s.bpp          = 1,
+               .supported      = false,
+       }, {
+               .name           = "RAW8 RGGB",
+               .fourcc         = V4L2_PIX_FMT_SRGGB8,
+               .code           = MEDIA_BUS_FMT_SRGGB8_1X8,
+               .l.width        = 10,
+               .l.bpp          = 2,
+               .s.width        = 8,
+               .s.bpp          = 1,
+               .supported      = false,
+       }, {
+               .name           = "RGB565 (LE)",
+               .fourcc         = V4L2_PIX_FMT_RGB565,
+               .code           = MEDIA_BUS_FMT_RGB565_2X8_LE,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       }, {
+               .name           = "RGB565 (BE)",
+               .fourcc         = V4L2_PIX_FMT_RGB565X,
+               .code           = MEDIA_BUS_FMT_RGB565_2X8_BE,
+               .l.width        = 10,
+               .l.bpp          = 4,
+               .s.width        = 8,
+               .s.bpp          = 2,
+               .supported      = false,
+       },
+};
+
+static int
+__vpfe_get_format(struct vpfe_device *vpfe,
+                 struct v4l2_format *format, unsigned int *bpp);
+
+static struct vpfe_fmt *find_format_by_code(unsigned int code)
+{
+       struct vpfe_fmt *fmt;
+       unsigned int k;
+
+       for (k = 0; k < ARRAY_SIZE(formats); k++) {
+               fmt = &formats[k];
+               if (fmt->code == code)
+                       return fmt;
+       }
+
+       return NULL;
+}
+
+static struct vpfe_fmt *find_format_by_pix(unsigned int pixelformat)
+{
+       struct vpfe_fmt *fmt;
+       unsigned int k;
+
+       for (k = 0; k < ARRAY_SIZE(formats); k++) {
+               fmt = &formats[k];
+               if (fmt->fourcc == pixelformat)
+                       return fmt;
+       }
+
+       return NULL;
+}
+
+static void
+mbus_to_pix(struct vpfe_device *vpfe,
+           const struct v4l2_mbus_framefmt *mbus,
+           struct v4l2_pix_format *pix, unsigned int *bpp)
+{
+       struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
+       unsigned int bus_width = sdinfo->vpfe_param.bus_width;
+       struct vpfe_fmt *fmt;
+
+       fmt = find_format_by_code(mbus->code);
+       if (WARN_ON(fmt == NULL)) {
+               pr_err("Invalid mbus code set\n");
+               *bpp = 1;
+               return;
+       }
+
+       memset(pix, 0, sizeof(*pix));
+       v4l2_fill_pix_format(pix, mbus);
+       pix->pixelformat = fmt->fourcc;
+       *bpp = (bus_width == 10) ?  fmt->l.bpp : fmt->s.bpp;
+
+       /* pitch should be 32 bytes aligned */
+       pix->bytesperline = ALIGN(pix->width * *bpp, 32);
+       pix->sizeimage = pix->bytesperline * pix->height;
+}
+
+static void pix_to_mbus(struct vpfe_device *vpfe,
+                       struct v4l2_pix_format *pix_fmt,
+                       struct v4l2_mbus_framefmt *mbus_fmt)
+{
+       struct vpfe_fmt *fmt;
+
+       fmt = find_format_by_pix(pix_fmt->pixelformat);
+       if (!fmt) {
+               /* default to first entry */
+               vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
+                       pix_fmt->pixelformat);
+               fmt = &formats[0];
+       }
+
+       memset(mbus_fmt, 0, sizeof(*mbus_fmt));
+       v4l2_fill_mbus_format(mbus_fmt, pix_fmt, fmt->code);
+}
+
+/*  Print Four-character-code (FOURCC) */
+static char *print_fourcc(u32 fmt)
+{
+       static char code[5];
+
+       code[0] = (unsigned char)(fmt & 0xff);
+       code[1] = (unsigned char)((fmt >> 8) & 0xff);
+       code[2] = (unsigned char)((fmt >> 16) & 0xff);
+       code[3] = (unsigned char)((fmt >> 24) & 0xff);
+       code[4] = '\0';
+
+       return code;
+}
+
+static int
+cmp_v4l2_format(const struct v4l2_format *lhs, const struct v4l2_format *rhs)
+{
+       return lhs->type == rhs->type &&
+               lhs->fmt.pix.width == rhs->fmt.pix.width &&
+               lhs->fmt.pix.height == rhs->fmt.pix.height &&
+               lhs->fmt.pix.pixelformat == rhs->fmt.pix.pixelformat &&
+               lhs->fmt.pix.field == rhs->fmt.pix.field &&
+               lhs->fmt.pix.colorspace == rhs->fmt.pix.colorspace &&
+               lhs->fmt.pix.ycbcr_enc == rhs->fmt.pix.ycbcr_enc &&
+               lhs->fmt.pix.quantization == rhs->fmt.pix.quantization;
+}
+
+static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)
+{
+       return ioread32(ccdc->ccdc_cfg.base_addr + offset);
+}
+
+static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)
+{
+       iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);
+}
+
+static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)
+{
+       return container_of(ccdc, struct vpfe_device, ccdc);
+}
+
+static inline struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_buffer *vb)
+{
+       return container_of(vb, struct vpfe_cap_buffer, vb);
+}
+
+static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)
+{
+       vpfe_reg_write(ccdc, !!flag, VPFE_PCR);
+}
+
+static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)
+{
+       unsigned int cfg;
+
+       if (!flag) {
+               cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);
+               cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);
+       } else {
+               cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;
+       }
+
+       vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);
+}
+
+static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,
+                            struct v4l2_rect *image_win,
+                            enum ccdc_frmfmt frm_fmt,
+                            int bpp)
+{
+       int horz_start, horz_nr_pixels;
+       int vert_start, vert_nr_lines;
+       int val, mid_img;
+
+       /*
+        * ppc - per pixel count. indicates how many pixels per cell
+        * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
+        * raw capture this is 1
+        */
+       horz_start = image_win->left * bpp;
+       horz_nr_pixels = (image_win->width * bpp) - 1;
+       vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |
+                               horz_nr_pixels, VPFE_HORZ_INFO);
+
+       vert_start = image_win->top;
+
+       if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
+               vert_nr_lines = (image_win->height >> 1) - 1;
+               vert_start >>= 1;
+               /* Since first line doesn't have any data */
+               vert_start += 1;
+               /* configure VDINT0 */
+               val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);
+       } else {
+               /* Since first line doesn't have any data */
+               vert_start += 1;
+               vert_nr_lines = image_win->height - 1;
+               /*
+                * configure VDINT0 and VDINT1. VDINT1 will be at half
+                * of image height
+                */
+               mid_img = vert_start + (image_win->height / 2);
+               val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |
+                               (mid_img & VPFE_VDINT_VDINT1_MASK);
+       }
+
+       vpfe_reg_write(ccdc, val, VPFE_VDINT);
+
+       vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |
+                               vert_start, VPFE_VERT_START);
+       vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);
+}
+
+static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)
+{
+       struct vpfe_device *vpfe = to_vpfe(ccdc);
+
+       vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));
+       vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));
+       vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));
+       vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));
+       vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));
+       vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));
+       vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",
+                vpfe_reg_read(ccdc, VPFE_SYNMODE));
+       vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",
+                vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));
+       vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",
+                vpfe_reg_read(ccdc, VPFE_HORZ_INFO));
+       vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",
+                vpfe_reg_read(ccdc, VPFE_VERT_START));
+       vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",
+                vpfe_reg_read(ccdc, VPFE_VERT_LINES));
+}
+
+static int
+vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,
+                        struct vpfe_ccdc_config_params_raw *ccdcparam)
+{
+       struct vpfe_device *vpfe = to_vpfe(ccdc);
+       u8 max_gamma, max_data;
+
+       if (!ccdcparam->alaw.enable)
+               return 0;
+
+       max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
+       max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
+
+       if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||
+           ccdcparam->alaw.gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 ||
+           max_gamma > max_data) {
+               vpfe_dbg(1, vpfe, "Invalid data line select\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static void
+vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,
+                           struct vpfe_ccdc_config_params_raw *raw_params)
+{
+       struct vpfe_ccdc_config_params_raw *config_params =
+                               &ccdc->ccdc_cfg.bayer.config_params;
+
+       config_params = raw_params;
+}
+
+/*
+ * vpfe_ccdc_restore_defaults()
+ * This function will write defaults to all CCDC registers
+ */
+static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)
+{
+       int i;
+
+       /* Disable CCDC */
+       vpfe_pcr_enable(ccdc, 0);
+
+       /* set all registers to default value */
+       for (i = 4; i <= 0x94; i += 4)
+               vpfe_reg_write(ccdc, 0,  i);
+
+       vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);
+       vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);
+}
+
+static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)
+{
+       int dma_cntl, i, pcr;
+
+       /* If the CCDC module is still busy wait for it to be done */
+       for (i = 0; i < 10; i++) {
+               usleep_range(5000, 6000);
+               pcr = vpfe_reg_read(ccdc, VPFE_PCR);
+               if (!pcr)
+                       break;
+
+               /* make sure it it is disabled */
+               vpfe_pcr_enable(ccdc, 0);
+       }
+
+       /* Disable CCDC by resetting all register to default POR values */
+       vpfe_ccdc_restore_defaults(ccdc);
+
+       /* if DMA_CNTL overflow bit is set. Clear it
+        *  It appears to take a while for this to become quiescent ~20ms
+        */
+       for (i = 0; i < 10; i++) {
+               dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);
+               if (!(dma_cntl & VPFE_DMA_CNTL_OVERFLOW))
+                       break;
+
+               /* Clear the overflow bit */
+               vpfe_reg_write(ccdc, dma_cntl, VPFE_DMA_CNTL);
+               usleep_range(5000, 6000);
+       }
+
+       /* Disabled the module at the CONFIG level */
+       vpfe_config_enable(ccdc, 0);
+
+       pm_runtime_put_sync(dev);
+
+       return 0;
+}
+
+static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)
+{
+       struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
+       struct vpfe_ccdc_config_params_raw raw_params;
+       int x;
+
+       if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)
+               return -EINVAL;
+
+       x = copy_from_user(&raw_params, params, sizeof(raw_params));
+       if (x) {
+               vpfe_dbg(1, vpfe,
+                       "vpfe_ccdc_set_params: error in copying ccdc params, %d\n",
+                       x);
+               return -EFAULT;
+       }
+
+       if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {
+               vpfe_ccdc_update_raw_params(ccdc, &raw_params);
+                       return 0;
+       }
+
+       return -EINVAL;
+}
+
+/*
+ * vpfe_ccdc_config_ycbcr()
+ * This function will configure CCDC for YCbCr video capture
+ */
+static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)
+{
+       struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
+       struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;
+       u32 syn_mode;
+
+       vpfe_dbg(3, vpfe, "vpfe_ccdc_config_ycbcr:\n");
+       /*
+        * first restore the CCDC registers to default values
+        * This is important since we assume default values to be set in
+        * a lot of registers that we didn't touch
+        */
+       vpfe_ccdc_restore_defaults(ccdc);
+
+       /*
+        * configure pixel format, frame format, configure video frame
+        * format, enable output to SDRAM, enable internal timing generator
+        * and 8bit pack mode
+        */
+       syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<
+                   VPFE_SYN_MODE_INPMOD_SHIFT) |
+                   ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<
+                   VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |
+                   VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);
+
+       /* setup BT.656 sync mode */
+       if (params->bt656_enable) {
+               vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);
+
+               /*
+                * configure the FID, VD, HD pin polarity,
+                * fld,hd pol positive, vd negative, 8-bit data
+                */
+               syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;
+               if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
+                       syn_mode |= VPFE_SYN_MODE_10BITS;
+               else
+                       syn_mode |= VPFE_SYN_MODE_8BITS;
+       } else {
+               /* y/c external sync mode */
+               syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<
+                            VPFE_FID_POL_SHIFT) |
+                            ((params->hd_pol & VPFE_HD_POL_MASK) <<
+                            VPFE_HD_POL_SHIFT) |
+                            ((params->vd_pol & VPFE_VD_POL_MASK) <<
+                            VPFE_VD_POL_SHIFT));
+       }
+       vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
+
+       /* configure video window */
+       vpfe_ccdc_setwin(ccdc, &params->win,
+                        params->frm_fmt, params->bytesperpixel);
+
+       /*
+        * configure the order of y cb cr in SDRAM, and disable latch
+        * internal register on vsync
+        */
+       if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
+               vpfe_reg_write(ccdc,
+                              (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
+                              VPFE_LATCH_ON_VSYNC_DISABLE |
+                              VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);
+       else
+               vpfe_reg_write(ccdc,
+                              (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
+                              VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
+
+       /*
+        * configure the horizontal line offset. This should be a
+        * on 32 byte boundary. So clear LSB 5 bits
+        */
+       vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
+
+       /* configure the memory line offset */
+       if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
+               /* two fields are interleaved in memory */
+               vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,
+                              VPFE_SDOFST);
+}
+
+static void
+vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,
+                            struct vpfe_ccdc_black_clamp *bclamp)
+{
+       u32 val;
+
+       if (!bclamp->enable) {
+               /* configure DCSub */
+               val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;
+               vpfe_reg_write(ccdc, val, VPFE_DCSUB);
+               vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);
+               return;
+       }
+       /*
+        * Configure gain,  Start pixel, No of line to be avg,
+        * No of pixel/line to be avg, & Enable the Black clamping
+        */
+       val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |
+              ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<
+               VPFE_BLK_ST_PXL_SHIFT) |
+              ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<
+               VPFE_BLK_SAMPLE_LINE_SHIFT) |
+              ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<
+               VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);
+       vpfe_reg_write(ccdc, val, VPFE_CLAMP);
+       /* If Black clamping is enable then make dcsub 0 */
+       vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);
+}
+
+static void
+vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,
+                               struct vpfe_ccdc_black_compensation *bcomp)
+{
+       u32 val;
+
+       val = ((bcomp->b & VPFE_BLK_COMP_MASK) |
+             ((bcomp->gb & VPFE_BLK_COMP_MASK) <<
+              VPFE_BLK_COMP_GB_COMP_SHIFT) |
+             ((bcomp->gr & VPFE_BLK_COMP_MASK) <<
+              VPFE_BLK_COMP_GR_COMP_SHIFT) |
+             ((bcomp->r & VPFE_BLK_COMP_MASK) <<
+              VPFE_BLK_COMP_R_COMP_SHIFT));
+       vpfe_reg_write(ccdc, val, VPFE_BLKCMP);
+}
+
+/*
+ * vpfe_ccdc_config_raw()
+ * This function will configure CCDC for Raw capture mode
+ */
+static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)
+{
+       struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
+       struct vpfe_ccdc_config_params_raw *config_params =
+                               &ccdc->ccdc_cfg.bayer.config_params;
+       struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;
+       unsigned int syn_mode;
+       unsigned int val;
+
+       vpfe_dbg(3, vpfe, "vpfe_ccdc_config_raw:\n");
+
+       /* Reset CCDC */
+       vpfe_ccdc_restore_defaults(ccdc);
+
+       /* Disable latching function registers on VSYNC  */
+       vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
+
+       /*
+        * Configure the vertical sync polarity(SYN_MODE.VDPOL),
+        * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
+        * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
+        * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
+        * SDRAM, enable internal timing generator
+        */
+       syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) |
+                  ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) |
+                  ((params->fid_pol & VPFE_FID_POL_MASK) <<
+                  VPFE_FID_POL_SHIFT) | ((params->frm_fmt &
+                  VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) |
+                  ((config_params->data_sz & VPFE_DATA_SZ_MASK) <<
+                  VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt &
+                  VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) |
+                  VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE);
+
+       /* Enable and configure aLaw register if needed */
+       if (config_params->alaw.enable) {
+               val = ((config_params->alaw.gamma_wd &
+                     VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE);
+               vpfe_reg_write(ccdc, val, VPFE_ALAW);
+               vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val);
+       }
+
+       /* Configure video window */
+       vpfe_ccdc_setwin(ccdc, &params->win, params->frm_fmt,
+                        params->bytesperpixel);
+
+       /* Configure Black Clamp */
+       vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp);
+
+       /* Configure Black level compensation */
+       vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp);
+
+       /* If data size is 8 bit then pack the data */
+       if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) ||
+           config_params->alaw.enable)
+               syn_mode |= VPFE_DATA_PACK_ENABLE;
+
+       /*
+        * Configure Horizontal offset register. If pack 8 is enabled then
+        * 1 pixel will take 1 byte
+        */
+       vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
+
+       vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n",
+               params->bytesperline, params->bytesperline);
+
+       /* Set value for SDOFST */
+       if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
+               if (params->image_invert_enable) {
+                       /* For interlace inverse mode */
+                       vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT,
+                                  VPFE_SDOFST);
+               } else {
+                       /* For interlace non inverse mode */
+                       vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT,
+                                  VPFE_SDOFST);
+               }
+       } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
+               vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT,
+                          VPFE_SDOFST);
+       }
+
+       vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
+
+       vpfe_reg_dump(ccdc);
+}
+
+static inline int
+vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc,
+                     enum ccdc_buftype buf_type)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               ccdc->ccdc_cfg.bayer.buf_type = buf_type;
+       else
+               ccdc->ccdc_cfg.ycbcr.buf_type = buf_type;
+
+       return 0;
+}
+
+static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               return ccdc->ccdc_cfg.bayer.buf_type;
+
+       return ccdc->ccdc_cfg.ycbcr.buf_type;
+}
+
+static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt)
+{
+       struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
+
+       vpfe_dbg(1, vpfe, "vpfe_ccdc_set_pixel_format: if_type: %d, pixfmt:%s\n",
+                ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt));
+
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
+               ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
+               /*
+                * Need to clear it in case it was left on
+                * after the last capture.
+                */
+               ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0;
+
+               switch (pixfmt) {
+               case V4L2_PIX_FMT_SBGGR8:
+                       ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1;
+                       break;
+
+               case V4L2_PIX_FMT_YUYV:
+               case V4L2_PIX_FMT_UYVY:
+               case V4L2_PIX_FMT_YUV420:
+               case V4L2_PIX_FMT_NV12:
+               case V4L2_PIX_FMT_RGB565X:
+                       break;
+
+               case V4L2_PIX_FMT_SBGGR16:
+               default:
+                       return -EINVAL;
+               }
+       } else {
+               switch (pixfmt) {
+               case V4L2_PIX_FMT_YUYV:
+                       ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
+                       break;
+
+               case V4L2_PIX_FMT_UYVY:
+                       ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
+                       break;
+
+               default:
+                       return -EINVAL;
+               }
+       }
+
+       return 0;
+}
+
+static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc)
+{
+       u32 pixfmt;
+
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
+               pixfmt = V4L2_PIX_FMT_YUYV;
+       } else {
+               if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
+                       pixfmt = V4L2_PIX_FMT_YUYV;
+               else
+                       pixfmt = V4L2_PIX_FMT_UYVY;
+       }
+
+       return pixfmt;
+}
+
+static int
+vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc,
+                          struct v4l2_rect *win, unsigned int bpp)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
+               ccdc->ccdc_cfg.bayer.win = *win;
+               ccdc->ccdc_cfg.bayer.bytesperpixel = bpp;
+               ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);
+       } else {
+               ccdc->ccdc_cfg.ycbcr.win = *win;
+               ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp;
+               ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);
+       }
+
+       return 0;
+}
+
+static inline void
+vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc,
+                          struct v4l2_rect *win)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               *win = ccdc->ccdc_cfg.bayer.win;
+       else
+               *win = ccdc->ccdc_cfg.ycbcr.win;
+}
+
+static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               return ccdc->ccdc_cfg.bayer.bytesperline;
+
+       return ccdc->ccdc_cfg.ycbcr.bytesperline;
+}
+
+static inline int
+vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc,
+                          enum ccdc_frmfmt frm_fmt)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt;
+       else
+               ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
+
+       return 0;
+}
+
+static inline enum ccdc_frmfmt
+vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc)
+{
+       if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               return ccdc->ccdc_cfg.bayer.frm_fmt;
+
+       return ccdc->ccdc_cfg.ycbcr.frm_fmt;
+}
+
+static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc)
+{
+       return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1;
+}
+
+static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr)
+{
+       vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR);
+}
+
+static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc,
+                                     struct vpfe_hw_if_param *params)
+{
+       struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
+
+       ccdc->ccdc_cfg.if_type = params->if_type;
+
+       switch (params->if_type) {
+       case VPFE_BT656:
+       case VPFE_YCBCR_SYNC_16:
+       case VPFE_YCBCR_SYNC_8:
+       case VPFE_BT656_10BIT:
+               ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol;
+               ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol;
+               break;
+
+       case VPFE_RAW_BAYER:
+               ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol;
+               ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol;
+               if (params->bus_width == 10)
+                       ccdc->ccdc_cfg.bayer.config_params.data_sz =
+                               VPFE_CCDC_DATA_10BITS;
+               else
+                       ccdc->ccdc_cfg.bayer.config_params.data_sz =
+                               VPFE_CCDC_DATA_8BITS;
+               vpfe_dbg(1, vpfe, "params.bus_width: %d\n",
+                       params->bus_width);
+               vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n",
+                       ccdc->ccdc_cfg.bayer.config_params.data_sz);
+               break;
+
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint)
+{
+       unsigned int vpfe_int_status;
+
+       vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
+
+       switch (vdint) {
+       /* VD0 interrupt */
+       case VPFE_VDINT0:
+               vpfe_int_status &= ~VPFE_VDINT0;
+               vpfe_int_status |= VPFE_VDINT0;
+               break;
+
+       /* VD1 interrupt */
+       case VPFE_VDINT1:
+               vpfe_int_status &= ~VPFE_VDINT1;
+               vpfe_int_status |= VPFE_VDINT1;
+               break;
+
+       /* VD2 interrupt */
+       case VPFE_VDINT2:
+               vpfe_int_status &= ~VPFE_VDINT2;
+               vpfe_int_status |= VPFE_VDINT2;
+               break;
+
+       /* Clear all interrupts */
+       default:
+               vpfe_int_status &= ~(VPFE_VDINT0 |
+                               VPFE_VDINT1 |
+                               VPFE_VDINT2);
+               vpfe_int_status |= (VPFE_VDINT0 |
+                               VPFE_VDINT1 |
+                               VPFE_VDINT2);
+               break;
+       }
+       /* Clear specific VDINT from the status register */
+       vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS);
+
+       vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
+
+       /* Acknowledge that we are done with all interrupts */
+       vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI);
+}
+
+static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc)
+{
+       ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER;
+
+       ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
+       ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED;
+       ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;
+       ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;
+       ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;
+       ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
+       ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED;
+
+       ccdc->ccdc_cfg.ycbcr.win.left = 0;
+       ccdc->ccdc_cfg.ycbcr.win.top = 0;
+       ccdc->ccdc_cfg.ycbcr.win.width = 720;
+       ccdc->ccdc_cfg.ycbcr.win.height = 576;
+       ccdc->ccdc_cfg.ycbcr.bt656_enable = 1;
+
+       ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
+       ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
+       ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;
+       ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;
+       ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;
+
+       ccdc->ccdc_cfg.bayer.win.left = 0;
+       ccdc->ccdc_cfg.bayer.win.top = 0;
+       ccdc->ccdc_cfg.bayer.win.width = 800;
+       ccdc->ccdc_cfg.bayer.win.height = 600;
+       ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS;
+       ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd =
+                                               VPFE_CCDC_GAMMA_BITS_09_0;
+}
+
+/*
+ * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
+ */
+static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe,
+                                     struct v4l2_format *f)
+{
+       struct v4l2_rect image_win;
+       enum ccdc_buftype buf_type;
+       enum ccdc_frmfmt frm_fmt;
+
+       memset(f, 0, sizeof(*f));
+       f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
+       f->fmt.pix.width = image_win.width;
+       f->fmt.pix.height = image_win.height;
+       f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
+       f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
+                               f->fmt.pix.height;
+       buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc);
+       f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc);
+       frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
+
+       if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
+               f->fmt.pix.field = V4L2_FIELD_NONE;
+       } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
+               if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
+                       f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+                } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) {
+                       f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
+               } else {
+                       vpfe_err(vpfe, "Invalid buf_type\n");
+                       return -EINVAL;
+               }
+       } else {
+               vpfe_err(vpfe, "Invalid frm_fmt\n");
+               return -EINVAL;
+       }
+       return 0;
+}
+
+static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe)
+{
+       enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_config_ccdc_image_format\n");
+
+       vpfe_dbg(1, vpfe, "pixelformat: %s\n",
+               print_fourcc(vpfe->fmt.fmt.pix.pixelformat));
+
+       if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc,
+                       vpfe->fmt.fmt.pix.pixelformat) < 0) {
+               vpfe_err(vpfe, "couldn't set pix format in ccdc\n");
+               return -EINVAL;
+       }
+
+       /* configure the image window */
+       vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, vpfe->bpp);
+
+       switch (vpfe->fmt.fmt.pix.field) {
+       case V4L2_FIELD_INTERLACED:
+               /* do nothing, since it is default */
+               ret = vpfe_ccdc_set_buftype(
+                               &vpfe->ccdc,
+                               CCDC_BUFTYPE_FLD_INTERLEAVED);
+               break;
+
+       case V4L2_FIELD_NONE:
+               frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
+               /* buffer type only applicable for interlaced scan */
+               break;
+
+       case V4L2_FIELD_SEQ_TB:
+               ret = vpfe_ccdc_set_buftype(
+                               &vpfe->ccdc,
+                               CCDC_BUFTYPE_FLD_SEPARATED);
+               break;
+
+       default:
+               return -EINVAL;
+       }
+
+       if (ret)
+               return ret;
+
+       return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt);
+}
+
+/*
+ * vpfe_config_image_format()
+ * For a given standard, this functions sets up the default
+ * pix format & crop values in the vpfe device and ccdc.  It first
+ * starts with defaults based values from the standard table.
+ * It then checks if sub device support g_mbus_fmt and then override the
+ * values based on that.Sets crop values to match with scan resolution
+ * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
+ * values in ccdc
+ */
+static int vpfe_config_image_format(struct vpfe_device *vpfe,
+                                   v4l2_std_id std_id)
+{
+       struct v4l2_pix_format *pix = &vpfe->fmt.fmt.pix;
+       int i, ret;
+
+       for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
+               if (vpfe_standards[i].std_id & std_id) {
+                       vpfe->std_info.active_pixels =
+                                       vpfe_standards[i].width;
+                       vpfe->std_info.active_lines =
+                                       vpfe_standards[i].height;
+                       vpfe->std_info.frame_format =
+                                       vpfe_standards[i].frame_format;
+                       vpfe->std_index = i;
+
+                       break;
+               }
+       }
+
+       if (i ==  ARRAY_SIZE(vpfe_standards)) {
+               vpfe_err(vpfe, "standard not supported\n");
+               return -EINVAL;
+       }
+
+       vpfe->crop.top = vpfe->crop.left = 0;
+       vpfe->crop.width = vpfe->std_info.active_pixels;
+       vpfe->crop.height = vpfe->std_info.active_lines;
+       pix->width = vpfe->crop.width;
+       pix->height = vpfe->crop.height;
+       pix->pixelformat = V4L2_PIX_FMT_YUYV;
+
+       /* first field and frame format based on standard frame format */
+       if (vpfe->std_info.frame_format)
+               pix->field = V4L2_FIELD_INTERLACED;
+       else
+               pix->field = V4L2_FIELD_NONE;
+
+       ret = __vpfe_get_format(vpfe, &vpfe->fmt, &vpfe->bpp);
+       if (ret)
+               return ret;
+
+       /* Update the crop window based on found values */
+       vpfe->crop.width = pix->width;
+       vpfe->crop.height = pix->height;
+
+       return vpfe_config_ccdc_image_format(vpfe);
+}
+
+static int vpfe_initialize_device(struct vpfe_device *vpfe)
+{
+       struct vpfe_subdev_info *sdinfo;
+       int ret;
+
+       sdinfo = &vpfe->cfg->sub_devs[0];
+       sdinfo->sd = vpfe->sd[0];
+       vpfe->current_input = 0;
+       vpfe->std_index = 0;
+       /* Configure the default format information */
+       ret = vpfe_config_image_format(vpfe,
+                                      vpfe_standards[vpfe->std_index].std_id);
+       if (ret)
+               return ret;
+
+       pm_runtime_get_sync(vpfe->pdev);
+
+       vpfe_config_enable(&vpfe->ccdc, 1);
+
+       vpfe_ccdc_restore_defaults(&vpfe->ccdc);
+
+       /* Clear all VPFE interrupts */
+       vpfe_clear_intr(&vpfe->ccdc, -1);
+
+       return ret;
+}
+
+/*
+ * vpfe_release : This function is based on the vb2_fop_release
+ * helper function.
+ * It has been augmented to handle module power management,
+ * by disabling/enabling h/w module fcntl clock when necessary.
+ */
+static int vpfe_release(struct file *file)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       int ret;
+
+       mutex_lock(&vpfe->lock);
+
+       if (v4l2_fh_is_singular_file(file))
+               vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
+       ret = _vb2_fop_release(file, NULL);
+
+       mutex_unlock(&vpfe->lock);
+
+       return ret;
+}
+
+/*
+ * vpfe_open : This function is based on the v4l2_fh_open helper function.
+ * It has been augmented to handle module power management,
+ * by disabling/enabling h/w module fcntl clock when necessary.
+ */
+static int vpfe_open(struct file *file)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       int ret;
+
+       mutex_lock(&vpfe->lock);
+
+       ret = v4l2_fh_open(file);
+       if (ret) {
+               vpfe_err(vpfe, "v4l2_fh_open failed\n");
+               goto unlock;
+       }
+
+       if (!v4l2_fh_is_singular_file(file))
+               goto unlock;
+
+       if (vpfe_initialize_device(vpfe)) {
+               v4l2_fh_release(file);
+               ret = -ENODEV;
+       }
+
+unlock:
+       mutex_unlock(&vpfe->lock);
+       return ret;
+}
+
+/**
+ * vpfe_schedule_next_buffer: set next buffer address for capture
+ * @vpfe : ptr to vpfe device
+ *
+ * This function will get next buffer from the dma queue and
+ * set the buffer address in the vpfe register for capture.
+ * the buffer is marked active
+ *
+ * Assumes caller is holding vpfe->dma_queue_lock already
+ */
+static inline void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
+{
+       vpfe->next_frm = list_entry(vpfe->dma_queue.next,
+                                   struct vpfe_cap_buffer, list);
+       list_del(&vpfe->next_frm->list);
+
+       vpfe_set_sdr_addr(&vpfe->ccdc,
+                      vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0));
+}
+
+static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
+{
+       unsigned long addr;
+
+       addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0) +
+                                       vpfe->field_off;
+
+       vpfe_set_sdr_addr(&vpfe->ccdc, addr);
+}
+
+/*
+ * vpfe_process_buffer_complete: process a completed buffer
+ * @vpfe : ptr to vpfe device
+ *
+ * This function time stamp the buffer and mark it as DONE. It also
+ * wake up any process waiting on the QUEUE and set the next buffer
+ * as current
+ */
+static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe)
+{
+       v4l2_get_timestamp(&vpfe->cur_frm->vb.v4l2_buf.timestamp);
+       vpfe->cur_frm->vb.v4l2_buf.field = vpfe->fmt.fmt.pix.field;
+       vpfe->cur_frm->vb.v4l2_buf.sequence = vpfe->sequence++;
+       vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE);
+       vpfe->cur_frm = vpfe->next_frm;
+}
+
+/*
+ * vpfe_isr : ISR handler for vpfe capture (VINT0)
+ * @irq: irq number
+ * @dev_id: dev_id ptr
+ *
+ * It changes status of the captured buffer, takes next buffer from the queue
+ * and sets its address in VPFE registers
+ */
+static irqreturn_t vpfe_isr(int irq, void *dev)
+{
+       struct vpfe_device *vpfe = (struct vpfe_device *)dev;
+       enum v4l2_field field;
+       int intr_status;
+       int fid;
+
+       intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);
+
+       if (intr_status & VPFE_VDINT0) {
+               field = vpfe->fmt.fmt.pix.field;
+
+               if (field == V4L2_FIELD_NONE) {
+                       /* handle progressive frame capture */
+                       if (vpfe->cur_frm != vpfe->next_frm)
+                               vpfe_process_buffer_complete(vpfe);
+                       goto next_intr;
+               }
+
+               /* interlaced or TB capture check which field
+                  we are in hardware */
+               fid = vpfe_ccdc_getfid(&vpfe->ccdc);
+
+               /* switch the software maintained field id */
+               vpfe->field ^= 1;
+               if (fid == vpfe->field) {
+                       /* we are in-sync here,continue */
+                       if (fid == 0) {
+                               /*
+                                * One frame is just being captured. If the
+                                * next frame is available, release the
+                                * current frame and move on
+                                */
+                               if (vpfe->cur_frm != vpfe->next_frm)
+                                       vpfe_process_buffer_complete(vpfe);
+                               /*
+                                * based on whether the two fields are stored
+                                * interleave or separately in memory,
+                                * reconfigure the CCDC memory address
+                                */
+                               if (field == V4L2_FIELD_SEQ_TB)
+                                       vpfe_schedule_bottom_field(vpfe);
+
+                               goto next_intr;
+                       }
+                       /*
+                        * if one field is just being captured configure
+                        * the next frame get the next frame from the empty
+                        * queue if no frame is available hold on to the
+                        * current buffer
+                        */
+                       spin_lock(&vpfe->dma_queue_lock);
+                       if (!list_empty(&vpfe->dma_queue) &&
+                           vpfe->cur_frm == vpfe->next_frm)
+                               vpfe_schedule_next_buffer(vpfe);
+                       spin_unlock(&vpfe->dma_queue_lock);
+               } else if (fid == 0) {
+                       /*
+                        * out of sync. Recover from any hardware out-of-sync.
+                        * May loose one frame
+                        */
+                       vpfe->field = fid;
+               }
+       }
+
+next_intr:
+       if (intr_status & VPFE_VDINT1) {
+               spin_lock(&vpfe->dma_queue_lock);
+               if (vpfe->fmt.fmt.pix.field == V4L2_FIELD_NONE &&
+                   !list_empty(&vpfe->dma_queue) &&
+                   vpfe->cur_frm == vpfe->next_frm)
+                       vpfe_schedule_next_buffer(vpfe);
+               spin_unlock(&vpfe->dma_queue_lock);
+       }
+
+       vpfe_clear_intr(&vpfe->ccdc, intr_status);
+
+       return IRQ_HANDLED;
+}
+
+static inline void vpfe_detach_irq(struct vpfe_device *vpfe)
+{
+       unsigned int intr = VPFE_VDINT0;
+       enum ccdc_frmfmt frame_format;
+
+       frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
+       if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
+               intr |= VPFE_VDINT1;
+
+       vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR);
+}
+
+static inline void vpfe_attach_irq(struct vpfe_device *vpfe)
+{
+       unsigned int intr = VPFE_VDINT0;
+       enum ccdc_frmfmt frame_format;
+
+       frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
+       if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
+               intr |= VPFE_VDINT1;
+
+       vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET);
+}
+
+static int vpfe_querycap(struct file *file, void  *priv,
+                        struct v4l2_capability *cap)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       vpfe_dbg(2, vpfe, "vpfe_querycap\n");
+
+       strlcpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));
+       strlcpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));
+       snprintf(cap->bus_info, sizeof(cap->bus_info),
+                       "platform:%s", vpfe->v4l2_dev.name);
+       cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+                           V4L2_CAP_READWRITE;
+       cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+       return 0;
+}
+
+/* get the format set at output pad of the adjacent subdev */
+static int __vpfe_get_format(struct vpfe_device *vpfe,
+                            struct v4l2_format *format, unsigned int *bpp)
+{
+       struct v4l2_mbus_framefmt mbus_fmt;
+       struct vpfe_subdev_info *sdinfo;
+       struct v4l2_subdev_format fmt;
+       int ret;
+
+       sdinfo = vpfe->current_subdev;
+       if (!sdinfo->sd)
+               return -EINVAL;
+
+       fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+       fmt.pad = 0;
+
+       ret = v4l2_subdev_call(sdinfo->sd, pad, get_fmt, NULL, &fmt);
+       if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+               return ret;
+
+       if (!ret) {
+               v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
+               mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
+       } else {
+               ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
+                                                sdinfo->grp_id,
+                                                video, g_mbus_fmt,
+                                                &mbus_fmt);
+               if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+                       return ret;
+               v4l2_fill_pix_format(&format->fmt.pix, &mbus_fmt);
+               mbus_to_pix(vpfe, &mbus_fmt, &format->fmt.pix, bpp);
+       }
+
+       format->type = vpfe->fmt.type;
+
+       vpfe_dbg(1, vpfe,
+                "%s size %dx%d (%s) bytesperline = %d, size = %d, bpp = %d\n",
+                __func__, format->fmt.pix.width, format->fmt.pix.height,
+                print_fourcc(format->fmt.pix.pixelformat),
+                format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp);
+
+       return 0;
+}
+
+/* set the format at output pad of the adjacent subdev */
+static int __vpfe_set_format(struct vpfe_device *vpfe,
+                            struct v4l2_format *format, unsigned int *bpp)
+{
+       struct v4l2_mbus_framefmt mbus_fmt;
+       struct vpfe_subdev_info *sdinfo;
+       struct v4l2_subdev_format fmt;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "__vpfe_set_format\n");
+
+       sdinfo = vpfe->current_subdev;
+       if (!sdinfo->sd)
+               return -EINVAL;
+
+       fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+       fmt.pad = 0;
+
+       pix_to_mbus(vpfe, &format->fmt.pix, &fmt.format);
+
+       ret = v4l2_subdev_call(sdinfo->sd, pad, set_fmt, NULL, &fmt);
+       if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+               return ret;
+
+       if (!ret) {
+               v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
+               mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
+       } else {
+               ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
+                                                sdinfo->grp_id,
+                                                video, s_mbus_fmt,
+                                                &mbus_fmt);
+               if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+                       return ret;
+
+               v4l2_fill_pix_format(&format->fmt.pix, &mbus_fmt);
+               mbus_to_pix(vpfe, &mbus_fmt, &format->fmt.pix, bpp);
+       }
+
+       format->type = vpfe->fmt.type;
+
+       vpfe_dbg(1, vpfe,
+                "%s size %dx%d (%s) bytesperline = %d, size = %d, bpp = %d\n",
+                __func__,  format->fmt.pix.width, format->fmt.pix.height,
+                print_fourcc(format->fmt.pix.pixelformat),
+                format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp);
+
+       return 0;
+}
+
+static int vpfe_g_fmt(struct file *file, void *priv,
+                     struct v4l2_format *fmt)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       vpfe_dbg(2, vpfe, "vpfe_g_fmt\n");
+
+       *fmt = vpfe->fmt;
+
+       return 0;
+}
+
+static int vpfe_enum_fmt(struct file *file, void  *priv,
+                        struct v4l2_fmtdesc *f)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct vpfe_subdev_info *sdinfo;
+       struct vpfe_fmt *fmt = NULL;
+       unsigned int k;
+
+       vpfe_dbg(2, vpfe, "vpfe_enum_format index:%d\n",
+               f->index);
+
+       sdinfo = vpfe->current_subdev;
+       if (!sdinfo->sd)
+               return -EINVAL;
+
+       if (f->index > ARRAY_SIZE(formats))
+               return -EINVAL;
+
+       for (k = 0; k < ARRAY_SIZE(formats); k++) {
+               if (formats[k].index == f->index) {
+                       fmt = &formats[k];
+                       break;
+               }
+       }
+       if (!fmt)
+               return -EINVAL;
+
+       strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+       f->pixelformat = fmt->fourcc;
+       f->type = vpfe->fmt.type;
+
+       vpfe_dbg(1, vpfe, "vpfe_enum_format: mbus index: %d code: %x pixelformat: %s [%s]\n",
+               f->index, fmt->code, print_fourcc(fmt->fourcc), fmt->name);
+
+       return 0;
+}
+
+static int vpfe_try_fmt(struct file *file, void *priv,
+                       struct v4l2_format *fmt)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       unsigned int bpp;
+
+       vpfe_dbg(2, vpfe, "vpfe_try_fmt\n");
+
+       return __vpfe_get_format(vpfe, fmt, &bpp);
+}
+
+static int vpfe_s_fmt(struct file *file, void *priv,
+                     struct v4l2_format *fmt)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct v4l2_format format;
+       unsigned int bpp;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_s_fmt\n");
+
+       /* If streaming is started, return error */
+       if (vb2_is_busy(&vpfe->buffer_queue)) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               return -EBUSY;
+       }
+
+       ret = vpfe_try_fmt(file, priv, fmt);
+       if (ret)
+               return ret;
+
+
+       if (!cmp_v4l2_format(fmt, &format)) {
+               /* Sensor format is different from the requested format
+                * so we need to change it
+                */
+               ret = __vpfe_set_format(vpfe, fmt, &bpp);
+               if (ret)
+                       return ret;
+       } else /* Just make sure all of the fields are consistent */
+               *fmt = format;
+
+       /* First detach any IRQ if currently attached */
+       vpfe_detach_irq(vpfe);
+       vpfe->fmt = *fmt;
+       vpfe->bpp = bpp;
+
+       /* Update the crop window based on found values */
+       vpfe->crop.width = fmt->fmt.pix.width;
+       vpfe->crop.height = fmt->fmt.pix.height;
+
+       /* set image capture parameters in the ccdc */
+       return vpfe_config_ccdc_image_format(vpfe);
+}
+
+static int vpfe_enum_size(struct file *file, void  *priv,
+                         struct v4l2_frmsizeenum *fsize)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct v4l2_subdev_frame_size_enum fse;
+       struct vpfe_subdev_info *sdinfo;
+       struct v4l2_mbus_framefmt mbus;
+       struct v4l2_pix_format pix;
+       struct vpfe_fmt *fmt;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_enum_size\n");
+
+       /* check for valid format */
+       fmt = find_format_by_pix(fsize->pixel_format);
+       if (!fmt) {
+               vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
+                       fsize->pixel_format);
+               return -EINVAL;
+       }
+
+       memset(fsize->reserved, 0x0, sizeof(fsize->reserved));
+
+       sdinfo = vpfe->current_subdev;
+       if (!sdinfo->sd)
+               return -EINVAL;
+
+       memset(&pix, 0x0, sizeof(pix));
+       /* Construct pix from parameter and use default for the rest */
+       pix.pixelformat = fsize->pixel_format;
+       pix.width = 640;
+       pix.height = 480;
+       pix.colorspace = V4L2_COLORSPACE_SRGB;
+       pix.field = V4L2_FIELD_NONE;
+       pix_to_mbus(vpfe, &pix, &mbus);
+
+       memset(&fse, 0x0, sizeof(fse));
+       fse.index = fsize->index;
+       fse.pad = 0;
+       fse.code = mbus.code;
+       ret = v4l2_subdev_call(sdinfo->sd, pad, enum_frame_size, NULL, &fse);
+       if (ret)
+               return -EINVAL;
+
+       vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
+               fse.index, fse.code, fse.min_width, fse.max_width,
+               fse.min_height, fse.max_height);
+
+       fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+       fsize->discrete.width = fse.max_width;
+       fsize->discrete.height = fse.max_height;
+
+       vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d pixformat: %s size: %dx%d\n",
+               fsize->index, print_fourcc(fsize->pixel_format),
+               fsize->discrete.width, fsize->discrete.height);
+
+       return 0;
+}
+
+/*
+ * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
+ * given app input index
+ */
+static int
+vpfe_get_subdev_input_index(struct vpfe_device *vpfe,
+                           int *subdev_index,
+                           int *subdev_input_index,
+                           int app_input_index)
+{
+       struct vpfe_config *cfg = vpfe->cfg;
+       struct vpfe_subdev_info *sdinfo;
+       int i, j = 0;
+
+       for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
+               sdinfo = &cfg->sub_devs[i];
+               if (app_input_index < (j + 1)) {
+                       *subdev_index = i;
+                       *subdev_input_index = app_input_index - j;
+                       return 0;
+               }
+               j++;
+       }
+       return -EINVAL;
+}
+
+/*
+ * vpfe_get_app_input - Get app input index for a given subdev input index
+ * driver stores the input index of the current sub device and translate it
+ * when application request the current input
+ */
+static int vpfe_get_app_input_index(struct vpfe_device *vpfe,
+                                   int *app_input_index)
+{
+       struct vpfe_config *cfg = vpfe->cfg;
+       struct vpfe_subdev_info *sdinfo;
+       int i, j = 0;
+
+       for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
+               sdinfo = &cfg->sub_devs[i];
+               if (!strcmp(sdinfo->name, vpfe->current_subdev->name)) {
+                       if (vpfe->current_input >= 1)
+                               return -1;
+                       *app_input_index = j + vpfe->current_input;
+                       return 0;
+               }
+               j++;
+       }
+       return -EINVAL;
+}
+
+static int vpfe_enum_input(struct file *file, void *priv,
+                          struct v4l2_input *inp)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct vpfe_subdev_info *sdinfo;
+       int subdev, index;
+
+       vpfe_dbg(2, vpfe, "vpfe_enum_input\n");
+
+       if (vpfe_get_subdev_input_index(vpfe, &subdev, &index,
+                                       inp->index) < 0) {
+               vpfe_dbg(1, vpfe,
+                       "input information not found for the subdev\n");
+               return -EINVAL;
+       }
+       sdinfo = &vpfe->cfg->sub_devs[subdev];
+       *inp = sdinfo->inputs[index];
+
+       return 0;
+}
+
+static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       vpfe_dbg(2, vpfe, "vpfe_g_input\n");
+
+       return vpfe_get_app_input_index(vpfe, index);
+}
+
+/* Assumes caller is holding vpfe_dev->lock */
+static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)
+{
+       int subdev_index = 0, inp_index = 0;
+       struct vpfe_subdev_info *sdinfo;
+       struct vpfe_route *route;
+       u32 input, output;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_set_input: index: %d\n", index);
+
+       /* If streaming is started, return error */
+       if (vb2_is_busy(&vpfe->buffer_queue)) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               return -EBUSY;
+       }
+       ret = vpfe_get_subdev_input_index(vpfe,
+                                         &subdev_index,
+                                         &inp_index,
+                                         index);
+       if (ret < 0) {
+               vpfe_err(vpfe, "invalid input index: %d\n", index);
+               goto get_out;
+       }
+
+       sdinfo = &vpfe->cfg->sub_devs[subdev_index];
+       sdinfo->sd = vpfe->sd[subdev_index];
+       route = &sdinfo->routes[inp_index];
+       if (route && sdinfo->can_route) {
+               input = route->input;
+               output = route->output;
+               if (sdinfo->sd) {
+                       ret = v4l2_subdev_call(sdinfo->sd, video,
+                                       s_routing, input, output, 0);
+                       if (ret) {
+                               vpfe_err(vpfe, "s_routing failed\n");
+                               ret = -EINVAL;
+                               goto get_out;
+                       }
+               }
+
+       }
+
+       vpfe->current_subdev = sdinfo;
+       if (sdinfo->sd)
+               vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler;
+       vpfe->current_input = index;
+       vpfe->std_index = 0;
+
+       /* set the bus/interface parameter for the sub device in ccdc */
+       ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param);
+       if (ret)
+               return ret;
+
+       /* set the default image parameters in the device */
+       return vpfe_config_image_format(vpfe,
+                                       vpfe_standards[vpfe->std_index].std_id);
+
+get_out:
+       return ret;
+}
+
+static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       vpfe_dbg(2, vpfe,
+               "vpfe_s_input: index: %d\n", index);
+
+       return vpfe_set_input(vpfe, index);
+}
+
+static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct vpfe_subdev_info *sdinfo;
+
+       vpfe_dbg(2, vpfe, "vpfe_querystd\n");
+
+       sdinfo = vpfe->current_subdev;
+       if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
+               return -ENODATA;
+
+       /* Call querystd function of decoder device */
+       return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+                                        video, querystd, std_id);
+}
+
+static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct vpfe_subdev_info *sdinfo;
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_s_std\n");
+
+       sdinfo = vpfe->current_subdev;
+       if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
+               return -ENODATA;
+
+       /* If streaming is started, return error */
+       if (vb2_is_busy(&vpfe->buffer_queue)) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               ret = -EBUSY;
+               return ret;
+       }
+
+       ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+                                        video, s_std, std_id);
+       if (ret < 0) {
+               vpfe_err(vpfe, "Failed to set standard\n");
+               return ret;
+       }
+       ret = vpfe_config_image_format(vpfe, std_id);
+
+       return ret;
+}
+
+static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct vpfe_subdev_info *sdinfo;
+
+       vpfe_dbg(2, vpfe, "vpfe_g_std\n");
+
+       sdinfo = vpfe->current_subdev;
+       if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD)
+               return -ENODATA;
+
+       *std_id = vpfe_standards[vpfe->std_index].std_id;
+
+       return 0;
+}
+
+/*
+ * vpfe_calculate_offsets : This function calculates buffers offset
+ * for top and bottom field
+ */
+static void vpfe_calculate_offsets(struct vpfe_device *vpfe)
+{
+       struct v4l2_rect image_win;
+
+       vpfe_dbg(2, vpfe, "vpfe_calculate_offsets\n");
+
+       vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
+       vpfe->field_off = image_win.height * image_win.width;
+}
+
+/*
+ * vpfe_queue_setup - Callback function for buffer setup.
+ * @vq: vb2_queue ptr
+ * @fmt: v4l2 format
+ * @nbuffers: ptr to number of buffers requested by application
+ * @nplanes:: contains number of distinct video planes needed to hold a frame
+ * @sizes[]: contains the size (in bytes) of each plane.
+ * @alloc_ctxs: ptr to allocation context
+ *
+ * This callback function is called when reqbuf() is called to adjust
+ * the buffer count and buffer size
+ */
+static int vpfe_queue_setup(struct vb2_queue *vq,
+                           const struct v4l2_format *fmt,
+                           unsigned int *nbuffers, unsigned int *nplanes,
+                           unsigned int sizes[], void *alloc_ctxs[])
+{
+       struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
+
+       if (fmt && fmt->fmt.pix.sizeimage < vpfe->fmt.fmt.pix.sizeimage)
+               return -EINVAL;
+
+       if (vq->num_buffers + *nbuffers < 3)
+               *nbuffers = 3 - vq->num_buffers;
+
+       *nplanes = 1;
+       sizes[0] = fmt ? fmt->fmt.pix.sizeimage : vpfe->fmt.fmt.pix.sizeimage;
+       alloc_ctxs[0] = vpfe->alloc_ctx;
+
+       vpfe_dbg(1, vpfe,
+               "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);
+
+       /* Calculate field offset */
+       vpfe_calculate_offsets(vpfe);
+
+       return 0;
+}
+
+/*
+ * vpfe_buffer_prepare :  callback function for buffer prepare
+ * @vb: ptr to vb2_buffer
+ *
+ * This is the callback function for buffer prepare when vb2_qbuf()
+ * function is called. The buffer is prepared and user space virtual address
+ * or user address is converted into  physical address
+ */
+static int vpfe_buffer_prepare(struct vb2_buffer *vb)
+{
+       struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
+
+       vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);
+
+       if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
+               return -EINVAL;
+
+       vb->v4l2_buf.field = vpfe->fmt.fmt.pix.field;
+
+       return 0;
+}
+
+/*
+ * vpfe_buffer_queue : Callback function to add buffer to DMA queue
+ * @vb: ptr to vb2_buffer
+ */
+static void vpfe_buffer_queue(struct vb2_buffer *vb)
+{
+       struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
+       struct vpfe_cap_buffer *buf = to_vpfe_buffer(vb);
+       unsigned long flags = 0;
+
+       /* add the buffer to the DMA queue */
+       spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+       list_add_tail(&buf->list, &vpfe->dma_queue);
+       spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+}
+
+/*
+ * vpfe_start_streaming : Starts the DMA engine for streaming
+ * @vb: ptr to vb2_buffer
+ * @count: number of buffers
+ */
+static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+       struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
+       struct vpfe_cap_buffer *buf, *tmp;
+       struct vpfe_subdev_info *sdinfo;
+       unsigned long flags;
+       unsigned long addr;
+       int ret;
+
+       spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+
+       vpfe->field = 0;
+       vpfe->sequence = 0;
+
+       sdinfo = vpfe->current_subdev;
+
+       vpfe_attach_irq(vpfe);
+
+       if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER)
+               vpfe_ccdc_config_raw(&vpfe->ccdc);
+       else
+               vpfe_ccdc_config_ycbcr(&vpfe->ccdc);
+
+       /* Get the next frame from the buffer queue */
+       vpfe->next_frm = list_entry(vpfe->dma_queue.next,
+                                   struct vpfe_cap_buffer, list);
+       vpfe->cur_frm = vpfe->next_frm;
+       /* Remove buffer from the buffer queue */
+       list_del(&vpfe->cur_frm->list);
+       spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+
+       addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb, 0);
+
+       vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr));
+
+       vpfe_pcr_enable(&vpfe->ccdc, 1);
+
+       ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1);
+       if (ret < 0) {
+               vpfe_err(vpfe, "Error in attaching interrupt handle\n");
+               goto err;
+       }
+
+       return 0;
+
+err:
+       list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) {
+               list_del(&buf->list);
+               vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
+       }
+       spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+
+       return ret;
+}
+
+/*
+ * vpfe_stop_streaming : Stop the DMA engine
+ * @vq: ptr to vb2_queue
+ *
+ * This callback stops the DMA engine and any remaining buffers
+ * in the DMA queue are released.
+ */
+static void vpfe_stop_streaming(struct vb2_queue *vq)
+{
+       struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
+       struct vpfe_subdev_info *sdinfo;
+       unsigned long flags;
+       int ret;
+
+       vpfe_pcr_enable(&vpfe->ccdc, 0);
+
+       vpfe_detach_irq(vpfe);
+
+       sdinfo = vpfe->current_subdev;
+       ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0);
+       if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+               vpfe_dbg(1, vpfe, "stream off failed in subdev\n");
+
+       /* release all active buffers */
+       spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+       if (vpfe->cur_frm == vpfe->next_frm) {
+               vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_ERROR);
+       } else {
+               if (vpfe->cur_frm != NULL)
+                       vb2_buffer_done(&vpfe->cur_frm->vb,
+                                       VB2_BUF_STATE_ERROR);
+               if (vpfe->next_frm != NULL)
+                       vb2_buffer_done(&vpfe->next_frm->vb,
+                                       VB2_BUF_STATE_ERROR);
+       }
+
+       while (!list_empty(&vpfe->dma_queue)) {
+               vpfe->next_frm = list_entry(vpfe->dma_queue.next,
+                                               struct vpfe_cap_buffer, list);
+               list_del(&vpfe->next_frm->list);
+               vb2_buffer_done(&vpfe->next_frm->vb, VB2_BUF_STATE_ERROR);
+       }
+       spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+}
+
+static int vpfe_cropcap(struct file *file, void *priv,
+                       struct v4l2_cropcap *crop)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       vpfe_dbg(2, vpfe, "vpfe_cropcap\n");
+
+       if (vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
+               return -EINVAL;
+
+       memset(crop, 0, sizeof(struct v4l2_cropcap));
+
+       crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       crop->defrect.width = vpfe_standards[vpfe->std_index].width;
+       crop->bounds.width = crop->defrect.width;
+       crop->defrect.height = vpfe_standards[vpfe->std_index].height;
+       crop->bounds.height = crop->defrect.height;
+       crop->pixelaspect = vpfe_standards[vpfe->std_index].pixelaspect;
+
+       return 0;
+}
+
+static int
+vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+
+       switch (s->target) {
+       case V4L2_SEL_TGT_CROP_BOUNDS:
+       case V4L2_SEL_TGT_CROP_DEFAULT:
+               s->r.left = s->r.top = 0;
+               s->r.width = vpfe->crop.width;
+               s->r.height = vpfe->crop.height;
+               break;
+
+       case V4L2_SEL_TGT_CROP:
+               s->r = vpfe->crop;
+               break;
+
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
+{
+       if (a->left < b->left || a->top < b->top)
+               return 0;
+
+       if (a->left + a->width > b->left + b->width)
+               return 0;
+
+       if (a->top + a->height > b->top + b->height)
+               return 0;
+
+       return 1;
+}
+
+static int
+vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       struct v4l2_rect cr = vpfe->crop;
+       struct v4l2_rect r = s->r;
+
+       /* If streaming is started, return error */
+       if (vb2_is_busy(&vpfe->buffer_queue)) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               return -EBUSY;
+       }
+
+       if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+                       s->target != V4L2_SEL_TGT_CROP)
+               return -EINVAL;
+
+       v4l_bound_align_image(&r.width, 0, cr.width, 0,
+                             &r.height, 0, cr.height, 0, 0);
+
+       r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width);
+       r.top  = clamp_t(unsigned int, r.top, 0, cr.height - r.height);
+
+       if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r))
+               return -ERANGE;
+
+       if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r))
+               return -ERANGE;
+
+       s->r = vpfe->crop = r;
+
+       vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, vpfe->bpp);
+       vpfe->fmt.fmt.pix.width = r.width;
+       vpfe->fmt.fmt.pix.height = r.height;
+       vpfe->fmt.fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
+       vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline *
+                                               vpfe->fmt.fmt.pix.height;
+
+       vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n",
+                r.left, r.top, r.width, r.height, cr.width, cr.height);
+
+       return 0;
+}
+
+static long vpfe_ioctl_default(struct file *file, void *priv,
+                              bool valid_prio, unsigned int cmd, void *param)
+{
+       struct vpfe_device *vpfe = video_drvdata(file);
+       int ret;
+
+       vpfe_dbg(2, vpfe, "vpfe_ioctl_default\n");
+
+       if (!valid_prio) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               return -EBUSY;
+       }
+
+       /* If streaming is started, return error */
+       if (vb2_is_busy(&vpfe->buffer_queue)) {
+               vpfe_err(vpfe, "%s device busy\n", __func__);
+               return -EBUSY;
+       }
+
+       switch (cmd) {
+       case VIDIOC_AM437X_CCDC_CFG:
+               ret = vpfe_ccdc_set_params(&vpfe->ccdc, param);
+               if (ret) {
+                       vpfe_dbg(2, vpfe,
+                               "Error setting parameters in CCDC\n");
+                       return ret;
+               }
+               ret = vpfe_get_ccdc_image_format(vpfe,
+                                                &vpfe->fmt);
+               if (ret < 0) {
+                       vpfe_dbg(2, vpfe,
+                               "Invalid image format at CCDC\n");
+                       return ret;
+               }
+               break;
+
+       default:
+               ret = -ENOTTY;
+               break;
+       }
+
+       return ret;
+}
+
+static const struct vb2_ops vpfe_video_qops = {
+       .wait_prepare           = vb2_ops_wait_prepare,
+       .wait_finish            = vb2_ops_wait_finish,
+       .queue_setup            = vpfe_queue_setup,
+       .buf_prepare            = vpfe_buffer_prepare,
+       .buf_queue              = vpfe_buffer_queue,
+       .start_streaming        = vpfe_start_streaming,
+       .stop_streaming         = vpfe_stop_streaming,
+};
+
+/* vpfe capture driver file operations */
+static const struct v4l2_file_operations vpfe_fops = {
+       .owner          = THIS_MODULE,
+       .open           = vpfe_open,
+       .release        = vpfe_release,
+       .read           = vb2_fop_read,
+       .poll           = vb2_fop_poll,
+       .unlocked_ioctl = video_ioctl2,
+       .mmap           = vb2_fop_mmap,
+};
+
+/* vpfe capture ioctl operations */
+static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
+       .vidioc_querycap                = vpfe_querycap,
+       .vidioc_enum_fmt_vid_cap        = vpfe_enum_fmt,
+       .vidioc_g_fmt_vid_cap           = vpfe_g_fmt,
+       .vidioc_s_fmt_vid_cap           = vpfe_s_fmt,
+       .vidioc_try_fmt_vid_cap         = vpfe_try_fmt,
+
+       .vidioc_enum_framesizes         = vpfe_enum_size,
+
+       .vidioc_enum_input              = vpfe_enum_input,
+       .vidioc_g_input                 = vpfe_g_input,
+       .vidioc_s_input                 = vpfe_s_input,
+
+       .vidioc_querystd                = vpfe_querystd,
+       .vidioc_s_std                   = vpfe_s_std,
+       .vidioc_g_std                   = vpfe_g_std,
+
+       .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
+       .vidioc_create_bufs             = vb2_ioctl_create_bufs,
+       .vidioc_prepare_buf             = vb2_ioctl_prepare_buf,
+       .vidioc_querybuf                = vb2_ioctl_querybuf,
+       .vidioc_qbuf                    = vb2_ioctl_qbuf,
+       .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
+       .vidioc_expbuf                  = vb2_ioctl_expbuf,
+       .vidioc_streamon                = vb2_ioctl_streamon,
+       .vidioc_streamoff               = vb2_ioctl_streamoff,
+
+       .vidioc_log_status              = v4l2_ctrl_log_status,
+       .vidioc_subscribe_event         = v4l2_ctrl_subscribe_event,
+       .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
+
+       .vidioc_cropcap                 = vpfe_cropcap,
+       .vidioc_g_selection             = vpfe_g_selection,
+       .vidioc_s_selection             = vpfe_s_selection,
+
+       .vidioc_default                 = vpfe_ioctl_default,
+};
+
+static int
+vpfe_async_bound(struct v4l2_async_notifier *notifier,
+                struct v4l2_subdev *subdev,
+                struct v4l2_async_subdev *asd)
+{
+       struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
+                                              struct vpfe_device, v4l2_dev);
+       struct v4l2_subdev_mbus_code_enum mbus_code;
+       struct vpfe_subdev_info *sdinfo;
+       bool found = false;
+       int i, j;
+
+       vpfe_dbg(1, vpfe, "vpfe_async_bound\n");
+
+       for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
+               sdinfo = &vpfe->cfg->sub_devs[i];
+
+               if (!strcmp(sdinfo->name, subdev->name)) {
+                       vpfe->sd[i] = subdev;
+                       vpfe_info(vpfe,
+                                "v4l2 sub device %s registered\n",
+                                subdev->name);
+                       vpfe->sd[i]->grp_id =
+                                       sdinfo->grp_id;
+                       /* update tvnorms from the sub devices */
+                       for (j = 0; j < 1; j++)
+                               vpfe->video_dev->tvnorms |=
+                                       sdinfo->inputs[j].std;
+
+                       found = true;
+                       break;
+               }
+       }
+
+       if (!found) {
+               vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);
+               return -EINVAL;
+       }
+
+       /* setup the supported formats & indexes */
+       for (j = 0, i = 0; ; ++j) {
+               struct vpfe_fmt *fmt;
+               int ret;
+
+               memset(&mbus_code, 0, sizeof(mbus_code));
+               mbus_code.index = j;
+               ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
+                              NULL, &mbus_code);
+               if (ret)
+                       break;
+
+               fmt = find_format_by_code(mbus_code.code);
+               if (!fmt)
+                       continue;
+
+               fmt->supported = true;
+               fmt->index = i++;
+       }
+
+       return 0;
+}
+
+static int vpfe_probe_complete(struct vpfe_device *vpfe)
+{
+       struct video_device *vdev;
+       struct vb2_queue *q;
+       int err;
+
+       spin_lock_init(&vpfe->dma_queue_lock);
+       mutex_init(&vpfe->lock);
+
+       vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+       /* set first sub device as current one */
+       vpfe->current_subdev = &vpfe->cfg->sub_devs[0];
+       vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler;
+
+       err = vpfe_set_input(vpfe, 0);
+       if (err)
+               goto probe_out;
+
+       /* Initialize videobuf2 queue as per the buffer type */
+       vpfe->alloc_ctx = vb2_dma_contig_init_ctx(vpfe->pdev);
+       if (IS_ERR(vpfe->alloc_ctx)) {
+               vpfe_err(vpfe, "Failed to get the context\n");
+               err = PTR_ERR(vpfe->alloc_ctx);
+               goto probe_out;
+       }
+
+       q = &vpfe->buffer_queue;
+       q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
+       q->drv_priv = vpfe;
+       q->ops = &vpfe_video_qops;
+       q->mem_ops = &vb2_dma_contig_memops;
+       q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
+       q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+       q->lock = &vpfe->lock;
+       q->min_buffers_needed = 1;
+
+       err = vb2_queue_init(q);
+       if (err) {
+               vpfe_err(vpfe, "vb2_queue_init() failed\n");
+               vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx);
+               goto probe_out;
+       }
+
+       INIT_LIST_HEAD(&vpfe->dma_queue);
+
+       vdev = vpfe->video_dev;
+       strlcpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));
+       vdev->release = video_device_release;
+       vdev->fops = &vpfe_fops;
+       vdev->ioctl_ops = &vpfe_ioctl_ops;
+       vdev->v4l2_dev = &vpfe->v4l2_dev;
+       vdev->vfl_dir = VFL_DIR_RX;
+       vdev->queue = q;
+       vdev->lock = &vpfe->lock;
+       video_set_drvdata(vdev, vpfe);
+       err = video_register_device(vpfe->video_dev, VFL_TYPE_GRABBER, -1);
+       if (err) {
+               vpfe_err(vpfe,
+                       "Unable to register video device.\n");
+               goto probe_out;
+       }
+
+       return 0;
+
+probe_out:
+       v4l2_device_unregister(&vpfe->v4l2_dev);
+       return err;
+}
+
+static int vpfe_async_complete(struct v4l2_async_notifier *notifier)
+{
+       struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
+                                       struct vpfe_device, v4l2_dev);
+
+       return vpfe_probe_complete(vpfe);
+}
+
+static struct vpfe_config *
+vpfe_get_pdata(struct platform_device *pdev)
+{
+       struct device_node *endpoint = NULL, *rem = NULL;
+       struct v4l2_of_endpoint bus_cfg;
+       struct vpfe_subdev_info *sdinfo;
+       struct vpfe_config *pdata;
+       unsigned int flags;
+       unsigned int i;
+       int err;
+
+       dev_dbg(&pdev->dev, "vpfe_get_pdata\n");
+
+       if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+               return pdev->dev.platform_data;
+
+       pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+       if (!pdata)
+               return NULL;
+
+       for (i = 0; ; i++) {
+               endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
+                                                     endpoint);
+               if (!endpoint)
+                       break;
+
+               sdinfo = &pdata->sub_devs[i];
+               sdinfo->grp_id = 0;
+
+               /* we only support camera */
+               sdinfo->inputs[0].index = i;
+               strcpy(sdinfo->inputs[0].name, "Camera");
+               sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;
+               sdinfo->inputs[0].std = V4L2_STD_ALL;
+               sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;
+
+               sdinfo->can_route = 0;
+               sdinfo->routes = NULL;
+
+               of_property_read_u32(endpoint, "ti,am437x-vpfe-interface",
+                                    &sdinfo->vpfe_param.if_type);
+               if (sdinfo->vpfe_param.if_type < 0 ||
+                       sdinfo->vpfe_param.if_type > 4) {
+                       sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER;
+               }
+
+               err = v4l2_of_parse_endpoint(endpoint, &bus_cfg);
+               if (err) {
+                       dev_err(&pdev->dev, "Could not parse the endpoint\n");
+                       goto done;
+               }
+
+               sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width;
+
+               if (sdinfo->vpfe_param.bus_width < 8 ||
+                       sdinfo->vpfe_param.bus_width > 16) {
+                       dev_err(&pdev->dev, "Invalid bus width.\n");
+                       goto done;
+               }
+
+               flags = bus_cfg.bus.parallel.flags;
+
+               if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+                       sdinfo->vpfe_param.hdpol = 1;
+
+               if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+                       sdinfo->vpfe_param.vdpol = 1;
+
+               rem = of_graph_get_remote_port_parent(endpoint);
+               if (!rem) {
+                       dev_err(&pdev->dev, "Remote device at %s not found\n",
+                               endpoint->full_name);
+                       goto done;
+               }
+
+               strncpy(sdinfo->name, rem->name, sizeof(sdinfo->name));
+
+               pdata->asd[i] = devm_kzalloc(&pdev->dev,
+                                            sizeof(struct v4l2_async_subdev),
+                                            GFP_KERNEL);
+               pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF;
+               pdata->asd[i]->match.of.node = rem;
+               of_node_put(endpoint);
+               of_node_put(rem);
+       }
+
+       of_node_put(endpoint);
+       return pdata;
+
+done:
+       of_node_put(endpoint);
+       of_node_put(rem);
+       return NULL;
+}
+
+/*
+ * vpfe_probe : This function creates device entries by register
+ * itself to the V4L2 driver and initializes fields of each
+ * device objects
+ */
+static int vpfe_probe(struct platform_device *pdev)
+{
+       struct vpfe_config *vpfe_cfg = vpfe_get_pdata(pdev);
+       struct vpfe_device *vpfe;
+       struct vpfe_ccdc *ccdc;
+       struct resource *res;
+       int ret;
+
+       if (!vpfe_cfg) {
+               dev_err(&pdev->dev, "No platform data\n");
+               return -EINVAL;
+       }
+
+       vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);
+       if (!vpfe)
+               return -ENOMEM;
+
+       vpfe->pdev = &pdev->dev;
+       vpfe->cfg = vpfe_cfg;
+       ccdc = &vpfe->ccdc;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(ccdc->ccdc_cfg.base_addr))
+               return PTR_ERR(ccdc->ccdc_cfg.base_addr);
+
+       vpfe->irq = platform_get_irq(pdev, 0);
+       if (vpfe->irq <= 0) {
+               dev_err(&pdev->dev, "No IRQ resource\n");
+               return -ENODEV;
+       }
+
+       ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,
+                              "vpfe_capture0", vpfe);
+       if (ret) {
+               dev_err(&pdev->dev, "Unable to request interrupt\n");
+               return -EINVAL;
+       }
+
+       vpfe->video_dev = video_device_alloc();
+       if (!vpfe->video_dev) {
+               dev_err(&pdev->dev, "Unable to allocate video device\n");
+               return -ENOMEM;
+       }
+
+       ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
+       if (ret) {
+               vpfe_err(vpfe,
+                       "Unable to register v4l2 device.\n");
+               goto probe_out_video_release;
+       }
+
+       /* set the driver data in platform device */
+       platform_set_drvdata(pdev, vpfe);
+       /* Enabling module functional clock */
+       pm_runtime_enable(&pdev->dev);
+
+       /* for now just enable it here instead of waiting for the open */
+       pm_runtime_get_sync(&pdev->dev);
+
+       vpfe_ccdc_config_defaults(ccdc);
+
+       pm_runtime_put_sync(&pdev->dev);
+
+       vpfe->sd = devm_kzalloc(&pdev->dev, sizeof(struct v4l2_subdev *) *
+                               ARRAY_SIZE(vpfe->cfg->asd), GFP_KERNEL);
+       if (!vpfe->sd) {
+               ret = -ENOMEM;
+               goto probe_out_v4l2_unregister;
+       }
+
+       vpfe->notifier.subdevs = vpfe->cfg->asd;
+       vpfe->notifier.num_subdevs = ARRAY_SIZE(vpfe->cfg->asd);
+       vpfe->notifier.bound = vpfe_async_bound;
+       vpfe->notifier.complete = vpfe_async_complete;
+       ret = v4l2_async_notifier_register(&vpfe->v4l2_dev,
+                                               &vpfe->notifier);
+       if (ret) {
+               vpfe_err(vpfe, "Error registering async notifier\n");
+               ret = -EINVAL;
+               goto probe_out_v4l2_unregister;
+       }
+
+       return 0;
+
+probe_out_v4l2_unregister:
+       v4l2_device_unregister(&vpfe->v4l2_dev);
+probe_out_video_release:
+       if (!video_is_registered(vpfe->video_dev))
+               video_device_release(vpfe->video_dev);
+       return ret;
+}
+
+/*
+ * vpfe_remove : It un-register device from V4L2 driver
+ */
+static int vpfe_remove(struct platform_device *pdev)
+{
+       struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+
+       vpfe_dbg(2, vpfe, "vpfe_remove\n");
+
+       pm_runtime_disable(&pdev->dev);
+
+       v4l2_async_notifier_unregister(&vpfe->notifier);
+       v4l2_device_unregister(&vpfe->v4l2_dev);
+       video_unregister_device(vpfe->video_dev);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static void vpfe_save_context(struct vpfe_ccdc *ccdc)
+{
+       ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR);
+       ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE);
+       ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST);
+       ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR);
+       ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP);
+       ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB);
+       ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN);
+       ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP);
+       ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT);
+       ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW);
+       ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF);
+       ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG);
+       ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING);
+       ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc,
+                                                           VPFE_HD_VD_WID);
+       ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc,
+                                                           VPFE_PIX_LINES);
+       ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc,
+                                                           VPFE_HORZ_INFO);
+       ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc,
+                                                            VPFE_VERT_START);
+       ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc,
+                                                            VPFE_VERT_LINES);
+       ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc,
+                                                           VPFE_HSIZE_OFF);
+}
+
+static int vpfe_suspend(struct device *dev)
+{
+       struct platform_device *pdev = to_platform_device(dev);
+       struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+       struct vpfe_ccdc *ccdc = &vpfe->ccdc;
+
+       /* if streaming has not started we don't care */
+       if (!vb2_start_streaming_called(&vpfe->buffer_queue))
+               return 0;
+
+       pm_runtime_get_sync(dev);
+       vpfe_config_enable(ccdc, 1);
+
+       /* Save VPFE context */
+       vpfe_save_context(ccdc);
+
+       /* Disable CCDC */
+       vpfe_pcr_enable(ccdc, 0);
+       vpfe_config_enable(ccdc, 0);
+
+       /* Disable both master and slave clock */
+       pm_runtime_put_sync(dev);
+
+       /* Select sleep pin state */
+       pinctrl_pm_select_sleep_state(dev);
+
+       return 0;
+}
+
+static void vpfe_restore_context(struct vpfe_ccdc *ccdc)
+{
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2],
+                                               VPFE_HD_VD_WID);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2],
+                                               VPFE_PIX_LINES);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2],
+                                               VPFE_HORZ_INFO);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2],
+                                               VPFE_VERT_START);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2],
+                                               VPFE_VERT_LINES);
+       vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2],
+                                               VPFE_HSIZE_OFF);
+}
+
+static int vpfe_resume(struct device *dev)
+{
+       struct platform_device *pdev = to_platform_device(dev);
+       struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+       struct vpfe_ccdc *ccdc = &vpfe->ccdc;
+
+       /* if streaming has not started we don't care */
+       if (!vb2_start_streaming_called(&vpfe->buffer_queue))
+               return 0;
+
+       /* Enable both master and slave clock */
+       pm_runtime_get_sync(dev);
+       vpfe_config_enable(ccdc, 1);
+
+       /* Restore VPFE context */
+       vpfe_restore_context(ccdc);
+
+       vpfe_config_enable(ccdc, 0);
+       pm_runtime_put_sync(dev);
+
+       /* Select default pin state */
+       pinctrl_pm_select_default_state(dev);
+
+       return 0;
+}
+
+#endif
+
+static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume);
+
+static const struct of_device_id vpfe_of_match[] = {
+       { .compatible = "ti,am437x-vpfe", },
+       { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, vpfe_of_match);
+
+static struct platform_driver vpfe_driver = {
+       .probe          = vpfe_probe,
+       .remove         = vpfe_remove,
+       .driver = {
+               .name   = VPFE_MODULE_NAME,
+               .owner  = THIS_MODULE,
+               .pm     = &vpfe_pm_ops,
+               .of_match_table = of_match_ptr(vpfe_of_match),
+       },
+};
+
+module_platform_driver(vpfe_driver);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("TI AM437x VPFE driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(VPFE_VERSION);
diff --git a/drivers/media/platform/am437x/am437x-vpfe.h b/drivers/media/platform/am437x/am437x-vpfe.h
new file mode 100644 (file)
index 0000000..0f55735
--- /dev/null
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@ti.com>
+ * Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef AM437X_VPFE_H
+#define AM437X_VPFE_H
+
+#include <linux/am437x-vpfe.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "am437x-vpfe_regs.h"
+
+enum vpfe_pin_pol {
+       VPFE_PINPOL_POSITIVE = 0,
+       VPFE_PINPOL_NEGATIVE,
+};
+
+enum vpfe_hw_if_type {
+       /* Raw Bayer */
+       VPFE_RAW_BAYER = 0,
+       /* BT656 - 8 bit */
+       VPFE_BT656,
+       /* BT656 - 10 bit */
+       VPFE_BT656_10BIT,
+       /* YCbCr - 8 bit with external sync */
+       VPFE_YCBCR_SYNC_8,
+       /* YCbCr - 16 bit with external sync */
+       VPFE_YCBCR_SYNC_16,
+};
+
+/* interface description */
+struct vpfe_hw_if_param {
+       enum vpfe_hw_if_type if_type;
+       enum vpfe_pin_pol hdpol;
+       enum vpfe_pin_pol vdpol;
+       unsigned int bus_width;
+};
+
+#define VPFE_MAX_SUBDEV                1
+#define VPFE_MAX_INPUTS                1
+
+struct vpfe_pixel_format {
+       struct v4l2_fmtdesc fmtdesc;
+       /* bytes per pixel */
+       int bpp;
+};
+
+struct vpfe_std_info {
+       int active_pixels;
+       int active_lines;
+       /* current frame format */
+       int frame_format;
+};
+
+struct vpfe_route {
+       u32 input;
+       u32 output;
+};
+
+struct vpfe_subdev_info {
+        char name[32];
+       /* Sub device group id */
+       int grp_id;
+       /* inputs available at the sub device */
+       struct v4l2_input inputs[VPFE_MAX_INPUTS];
+       /* Sub dev routing information for each input */
+       struct vpfe_route *routes;
+       /* check if sub dev supports routing */
+       int can_route;
+       /* ccdc bus/interface configuration */
+       struct vpfe_hw_if_param vpfe_param;
+       struct v4l2_subdev *sd;
+};
+
+struct vpfe_config {
+       /* information about each subdev */
+       struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
+       /* Flat array, arranged in groups */
+       struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
+};
+
+struct vpfe_cap_buffer {
+       struct vb2_buffer vb;
+       struct list_head list;
+};
+
+enum ccdc_pixfmt {
+       CCDC_PIXFMT_RAW = 0,
+       CCDC_PIXFMT_YCBCR_16BIT,
+       CCDC_PIXFMT_YCBCR_8BIT,
+};
+
+enum ccdc_frmfmt {
+       CCDC_FRMFMT_PROGRESSIVE = 0,
+       CCDC_FRMFMT_INTERLACED,
+};
+
+/* PIXEL ORDER IN MEMORY from LSB to MSB */
+/* only applicable for 8-bit input mode  */
+enum ccdc_pixorder {
+       CCDC_PIXORDER_YCBYCR,
+       CCDC_PIXORDER_CBYCRY,
+};
+
+enum ccdc_buftype {
+       CCDC_BUFTYPE_FLD_INTERLEAVED,
+       CCDC_BUFTYPE_FLD_SEPARATED
+};
+
+
+/* returns the highest bit used for the gamma */
+static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
+{
+       return 15 - width;
+}
+
+/* returns the highest bit used for this data size */
+static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
+{
+       return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
+}
+
+/* Structure for CCDC configuration parameters for raw capture mode */
+struct ccdc_params_raw {
+       /* pixel format */
+       enum ccdc_pixfmt pix_fmt;
+       /* progressive or interlaced frame */
+       enum ccdc_frmfmt frm_fmt;
+       struct v4l2_rect win;
+       /* Current Format Bytes Per Pixels */
+       unsigned int bytesperpixel;
+       /* Current Format Bytes per Lines
+        * (Aligned to 32 bytes) used for HORZ_INFO
+        */
+       unsigned int bytesperline;
+       /* field id polarity */
+       enum vpfe_pin_pol fid_pol;
+       /* vertical sync polarity */
+       enum vpfe_pin_pol vd_pol;
+       /* horizontal sync polarity */
+       enum vpfe_pin_pol hd_pol;
+       /* interleaved or separated fields */
+       enum ccdc_buftype buf_type;
+       /*
+        * enable to store the image in inverse
+        * order in memory(bottom to top)
+        */
+       unsigned char image_invert_enable;
+       /* configurable parameters */
+       struct vpfe_ccdc_config_params_raw config_params;
+};
+
+struct ccdc_params_ycbcr {
+       /* pixel format */
+       enum ccdc_pixfmt pix_fmt;
+       /* progressive or interlaced frame */
+       enum ccdc_frmfmt frm_fmt;
+       struct v4l2_rect win;
+       /* Current Format Bytes Per Pixels */
+       unsigned int bytesperpixel;
+       /* Current Format Bytes per Lines
+        * (Aligned to 32 bytes) used for HORZ_INFO
+        */
+       unsigned int bytesperline;
+       /* field id polarity */
+       enum vpfe_pin_pol fid_pol;
+       /* vertical sync polarity */
+       enum vpfe_pin_pol vd_pol;
+       /* horizontal sync polarity */
+       enum vpfe_pin_pol hd_pol;
+       /* enable BT.656 embedded sync mode */
+       int bt656_enable;
+       /* cb:y:cr:y or y:cb:y:cr in memory */
+       enum ccdc_pixorder pix_order;
+       /* interleaved or separated fields  */
+       enum ccdc_buftype buf_type;
+};
+
+/*
+ * CCDC operational configuration
+ */
+struct ccdc_config {
+       /* CCDC interface type */
+       enum vpfe_hw_if_type if_type;
+       /* Raw Bayer configuration */
+       struct ccdc_params_raw bayer;
+       /* YCbCr configuration */
+       struct ccdc_params_ycbcr ycbcr;
+       /* ccdc base address */
+       void __iomem *base_addr;
+};
+
+struct vpfe_ccdc {
+       struct ccdc_config ccdc_cfg;
+       u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
+};
+
+struct vpfe_device {
+       /* V4l2 specific parameters */
+       /* Identifies video device for this channel */
+       struct video_device *video_dev;
+       /* sub devices */
+       struct v4l2_subdev **sd;
+       /* vpfe cfg */
+       struct vpfe_config *cfg;
+       /* V4l2 device */
+       struct v4l2_device v4l2_dev;
+       /* parent device */
+       struct device *pdev;
+       /* subdevice async Notifier */
+       struct v4l2_async_notifier notifier;
+       /* Indicates id of the field which is being displayed */
+       unsigned field;
+       unsigned sequence;
+       /* current interface type */
+       struct vpfe_hw_if_param vpfe_if_params;
+       /* ptr to currently selected sub device */
+       struct vpfe_subdev_info *current_subdev;
+       /* current input at the sub device */
+       int current_input;
+       /* Keeps track of the information about the standard */
+       struct vpfe_std_info std_info;
+       /* std index into std table */
+       int std_index;
+       /* IRQs used when CCDC output to SDRAM */
+       unsigned int irq;
+       /* Pointer pointing to current v4l2_buffer */
+       struct vpfe_cap_buffer *cur_frm;
+       /* Pointer pointing to next v4l2_buffer */
+       struct vpfe_cap_buffer *next_frm;
+       /* Used to store pixel format */
+       struct v4l2_format fmt;
+       /* Used to store current bytes per pixel based on current format */
+       unsigned int bpp;
+       /*
+        * used when IMP is chained to store the crop window which
+        * is different from the image window
+        */
+       struct v4l2_rect crop;
+       /* Buffer queue used in video-buf */
+       struct vb2_queue buffer_queue;
+       /* Allocator-specific contexts for each plane */
+       struct vb2_alloc_ctx *alloc_ctx;
+       /* Queue of filled frames */
+       struct list_head dma_queue;
+       /* IRQ lock for DMA queue */
+       spinlock_t dma_queue_lock;
+       /* lock used to access this structure */
+       struct mutex lock;
+       /*
+        * offset where second field starts from the starting of the
+        * buffer for field separated YCbCr formats
+        */
+       u32 field_off;
+       struct vpfe_ccdc ccdc;
+};
+
+#endif /* AM437X_VPFE_H */
diff --git a/drivers/media/platform/am437x/am437x-vpfe_regs.h b/drivers/media/platform/am437x/am437x-vpfe_regs.h
new file mode 100644 (file)
index 0000000..4a0ed29
--- /dev/null
@@ -0,0 +1,140 @@
+/*
+ * TI AM437x Image Sensor Interface Registers
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@ti.com>
+ * Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef AM437X_VPFE_REGS_H
+#define AM437X_VPFE_REGS_H
+
+/* VPFE module register offset */
+#define VPFE_REVISION                          0x0
+#define VPFE_PCR                               0x4
+#define VPFE_SYNMODE                           0x8
+#define VPFE_HD_VD_WID                         0xc
+#define VPFE_PIX_LINES                         0x10
+#define VPFE_HORZ_INFO                         0x14
+#define VPFE_VERT_START                                0x18
+#define VPFE_VERT_LINES                                0x1c
+#define VPFE_CULLING                           0x20
+#define VPFE_HSIZE_OFF                         0x24
+#define VPFE_SDOFST                            0x28
+#define VPFE_SDR_ADDR                          0x2c
+#define VPFE_CLAMP                             0x30
+#define VPFE_DCSUB                             0x34
+#define VPFE_COLPTN                            0x38
+#define VPFE_BLKCMP                            0x3c
+#define VPFE_VDINT                             0x48
+#define VPFE_ALAW                              0x4c
+#define VPFE_REC656IF                          0x50
+#define VPFE_CCDCFG                            0x54
+#define VPFE_DMA_CNTL                          0x98
+#define VPFE_SYSCONFIG                         0x104
+#define VPFE_CONFIG                            0x108
+#define VPFE_IRQ_EOI                           0x110
+#define VPFE_IRQ_STS_RAW                       0x114
+#define VPFE_IRQ_STS                           0x118
+#define VPFE_IRQ_EN_SET                                0x11c
+#define VPFE_IRQ_EN_CLR                                0x120
+#define VPFE_REG_END                           0x124
+
+/* Define bit fields within selected registers */
+#define VPFE_FID_POL_MASK                      1
+#define VPFE_FID_POL_SHIFT                     4
+#define VPFE_HD_POL_MASK                       1
+#define VPFE_HD_POL_SHIFT                      3
+#define VPFE_VD_POL_MASK                       1
+#define VPFE_VD_POL_SHIFT                      2
+#define VPFE_HSIZE_OFF_MASK                    0xffffffe0
+#define VPFE_32BYTE_ALIGN_VAL                  31
+#define VPFE_FRM_FMT_MASK                      0x1
+#define VPFE_FRM_FMT_SHIFT                     7
+#define VPFE_DATA_SZ_MASK                      7
+#define VPFE_DATA_SZ_SHIFT                     8
+#define VPFE_PIX_FMT_MASK                      3
+#define VPFE_PIX_FMT_SHIFT                     12
+#define VPFE_VP2SDR_DISABLE                    0xfffbffff
+#define VPFE_WEN_ENABLE                                (1 << 17)
+#define VPFE_SDR2RSZ_DISABLE                   0xfff7ffff
+#define VPFE_VDHDEN_ENABLE                     (1 << 16)
+#define VPFE_LPF_ENABLE                                (1 << 14)
+#define VPFE_ALAW_ENABLE                       (1 << 3)
+#define VPFE_ALAW_GAMMA_WD_MASK                        7
+#define VPFE_BLK_CLAMP_ENABLE                  (1 << 31)
+#define VPFE_BLK_SGAIN_MASK                    0x1f
+#define VPFE_BLK_ST_PXL_MASK                   0x7fff
+#define VPFE_BLK_ST_PXL_SHIFT                  10
+#define VPFE_BLK_SAMPLE_LN_MASK                        7
+#define VPFE_BLK_SAMPLE_LN_SHIFT               28
+#define VPFE_BLK_SAMPLE_LINE_MASK              7
+#define VPFE_BLK_SAMPLE_LINE_SHIFT             25
+#define VPFE_BLK_DC_SUB_MASK                   0x03fff
+#define VPFE_BLK_COMP_MASK                     0xff
+#define VPFE_BLK_COMP_GB_COMP_SHIFT            8
+#define VPFE_BLK_COMP_GR_COMP_SHIFT            16
+#define VPFE_BLK_COMP_R_COMP_SHIFT             24
+#define VPFE_LATCH_ON_VSYNC_DISABLE            (1 << 15)
+#define VPFE_DATA_PACK_ENABLE                  (1 << 11)
+#define VPFE_HORZ_INFO_SPH_SHIFT               16
+#define VPFE_VERT_START_SLV0_SHIFT             16
+#define VPFE_VDINT_VDINT0_SHIFT                        16
+#define VPFE_VDINT_VDINT1_MASK                 0xffff
+#define VPFE_PPC_RAW                           1
+#define VPFE_DCSUB_DEFAULT_VAL                 0
+#define VPFE_CLAMP_DEFAULT_VAL                 0
+#define VPFE_COLPTN_VAL                                0xbb11bb11
+#define VPFE_TWO_BYTES_PER_PIXEL               2
+#define VPFE_INTERLACED_IMAGE_INVERT           0x4b6d
+#define VPFE_INTERLACED_NO_IMAGE_INVERT                0x0249
+#define VPFE_PROGRESSIVE_IMAGE_INVERT          0x4000
+#define VPFE_PROGRESSIVE_NO_IMAGE_INVERT       0
+#define VPFE_INTERLACED_HEIGHT_SHIFT           1
+#define VPFE_SYN_MODE_INPMOD_SHIFT             12
+#define VPFE_SYN_MODE_INPMOD_MASK              3
+#define VPFE_SYN_MODE_8BITS                    (7 << 8)
+#define VPFE_SYN_MODE_10BITS                   (6 << 8)
+#define VPFE_SYN_MODE_11BITS                   (5 << 8)
+#define VPFE_SYN_MODE_12BITS                   (4 << 8)
+#define VPFE_SYN_MODE_13BITS                   (3 << 8)
+#define VPFE_SYN_MODE_14BITS                   (2 << 8)
+#define VPFE_SYN_MODE_15BITS                   (1 << 8)
+#define VPFE_SYN_MODE_16BITS                   (0 << 8)
+#define VPFE_SYN_FLDMODE_MASK                  1
+#define VPFE_SYN_FLDMODE_SHIFT                 7
+#define VPFE_REC656IF_BT656_EN                 3
+#define VPFE_SYN_MODE_VD_POL_NEGATIVE          (1 << 2)
+#define VPFE_CCDCFG_Y8POS_SHIFT                        11
+#define VPFE_CCDCFG_BW656_10BIT                        (1 << 5)
+#define VPFE_SDOFST_FIELD_INTERLEAVED          0x249
+#define VPFE_NO_CULLING                                0xffff00ff
+#define VPFE_VDINT0                            (1 << 0)
+#define VPFE_VDINT1                            (1 << 1)
+#define VPFE_VDINT2                            (1 << 2)
+#define VPFE_DMA_CNTL_OVERFLOW                 (1 << 31)
+
+#define VPFE_CONFIG_PCLK_INV_SHIFT             0
+#define VPFE_CONFIG_PCLK_INV_MASK              1
+#define VPFE_CONFIG_PCLK_INV_NOT_INV           0
+#define VPFE_CONFIG_PCLK_INV_INV               1
+#define VPFE_CONFIG_EN_SHIFT                   1
+#define VPFE_CONFIG_EN_MASK                    2
+#define VPFE_CONFIG_EN_DISABLE                 0
+#define VPFE_CONFIG_EN_ENABLE                  1
+#define VPFE_CONFIG_ST_SHIFT                   2
+#define VPFE_CONFIG_ST_MASK                    4
+#define VPFE_CONFIG_ST_OCP_ACTIVE              0
+#define VPFE_CONFIG_ST_OCP_STANDBY             1
+
+#endif         /* AM437X_VPFE_REGS_H */
index 00b100023c477bf80de661c386ceb27461f4bbd6..9312d58065412244dc4ecc21918d9d59b5e8e365 100644 (file)
@@ -35,6 +35,7 @@ header-y += adfs_fs.h
 header-y += affs_hardblocks.h
 header-y += agpgart.h
 header-y += aio_abi.h
+header-y += am437x-vpfe.h
 header-y += apm_bios.h
 header-y += arcfb.h
 header-y += atalk.h
diff --git a/include/uapi/linux/am437x-vpfe.h b/include/uapi/linux/am437x-vpfe.h
new file mode 100644 (file)
index 0000000..9b03033
--- /dev/null
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@ti.com>
+ * Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef AM437X_VPFE_USER_H
+#define AM437X_VPFE_USER_H
+
+enum vpfe_ccdc_data_size {
+       VPFE_CCDC_DATA_16BITS = 0,
+       VPFE_CCDC_DATA_15BITS,
+       VPFE_CCDC_DATA_14BITS,
+       VPFE_CCDC_DATA_13BITS,
+       VPFE_CCDC_DATA_12BITS,
+       VPFE_CCDC_DATA_11BITS,
+       VPFE_CCDC_DATA_10BITS,
+       VPFE_CCDC_DATA_8BITS,
+};
+
+/* enum for No of pixel per line to be avg. in Black Clamping*/
+enum vpfe_ccdc_sample_length {
+       VPFE_CCDC_SAMPLE_1PIXELS = 0,
+       VPFE_CCDC_SAMPLE_2PIXELS,
+       VPFE_CCDC_SAMPLE_4PIXELS,
+       VPFE_CCDC_SAMPLE_8PIXELS,
+       VPFE_CCDC_SAMPLE_16PIXELS,
+};
+
+/* enum for No of lines in Black Clamping */
+enum vpfe_ccdc_sample_line {
+       VPFE_CCDC_SAMPLE_1LINES = 0,
+       VPFE_CCDC_SAMPLE_2LINES,
+       VPFE_CCDC_SAMPLE_4LINES,
+       VPFE_CCDC_SAMPLE_8LINES,
+       VPFE_CCDC_SAMPLE_16LINES,
+};
+
+/* enum for Alaw gamma width */
+enum vpfe_ccdc_gamma_width {
+       VPFE_CCDC_GAMMA_BITS_15_6 = 0,  /* use bits 15-6 for gamma */
+       VPFE_CCDC_GAMMA_BITS_14_5,
+       VPFE_CCDC_GAMMA_BITS_13_4,
+       VPFE_CCDC_GAMMA_BITS_12_3,
+       VPFE_CCDC_GAMMA_BITS_11_2,
+       VPFE_CCDC_GAMMA_BITS_10_1,
+       VPFE_CCDC_GAMMA_BITS_09_0,      /* use bits 9-0 for gamma */
+};
+
+/* structure for ALaw */
+struct vpfe_ccdc_a_law {
+       /* Enable/disable A-Law */
+       unsigned char enable;
+       /* Gamma Width Input */
+       enum vpfe_ccdc_gamma_width gamma_wd;
+};
+
+/* structure for Black Clamping */
+struct vpfe_ccdc_black_clamp {
+       unsigned char enable;
+       /* only if bClampEnable is TRUE */
+       enum vpfe_ccdc_sample_length sample_pixel;
+       /* only if bClampEnable is TRUE */
+       enum vpfe_ccdc_sample_line sample_ln;
+       /* only if bClampEnable is TRUE */
+       unsigned short start_pixel;
+       /* only if bClampEnable is TRUE */
+       unsigned short sgain;
+       /* only if bClampEnable is FALSE */
+       unsigned short dc_sub;
+};
+
+/* structure for Black Level Compensation */
+struct vpfe_ccdc_black_compensation {
+       /* Constant value to subtract from Red component */
+       char r;
+       /* Constant value to subtract from Gr component */
+       char gr;
+       /* Constant value to subtract from Blue component */
+       char b;
+       /* Constant value to subtract from Gb component */
+       char gb;
+};
+
+/* Structure for CCDC configuration parameters for raw capture mode passed
+ * by application
+ */
+struct vpfe_ccdc_config_params_raw {
+       /* data size value from 8 to 16 bits */
+       enum vpfe_ccdc_data_size data_sz;
+       /* Structure for Optional A-Law */
+       struct vpfe_ccdc_a_law alaw;
+       /* Structure for Optical Black Clamp */
+       struct vpfe_ccdc_black_clamp blk_clamp;
+       /* Structure for Black Compensation */
+       struct vpfe_ccdc_black_compensation blk_comp;
+};
+
+/*
+ *  Private IOCTL
+ * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture
+ * This is an experimental ioctl that will change in future kernels. So use
+ * this ioctl with care !
+ **/
+#define VIDIOC_AM437X_CCDC_CFG \
+       _IOW('V', BASE_VIDIOC_PRIVATE + 1, void *)
+
+#endif         /* AM437X_VPFE_USER_H */