// SPDX-License-Identifier: GPL-2.0-only
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/*
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* TI VPFE capture Driver
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*
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* Copyright (C) 2013 - 2014 Texas Instruments, Inc.
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*
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* Benoit Parrot <bparrot@ti.com>
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* Lad, Prabhakar <prabhakar.csengg@gmail.com>
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*/
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-rect.h>
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#include "am437x-vpfe.h"
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#define VPFE_MODULE_NAME "vpfe"
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#define VPFE_VERSION "0.1.0"
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level 0-8");
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#define vpfe_dbg(level, dev, fmt, arg...) \
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v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)
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#define vpfe_info(dev, fmt, arg...) \
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v4l2_info(&dev->v4l2_dev, fmt, ##arg)
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#define vpfe_err(dev, fmt, arg...) \
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v4l2_err(&dev->v4l2_dev, fmt, ##arg)
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/* standard information */
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struct vpfe_standard {
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v4l2_std_id std_id;
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unsigned int width;
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unsigned int height;
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struct v4l2_fract pixelaspect;
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int frame_format;
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};
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static const struct vpfe_standard vpfe_standards[] = {
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{V4L2_STD_525_60, 720, 480, {11, 10}, 1},
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{V4L2_STD_625_50, 720, 576, {54, 59}, 1},
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};
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static struct vpfe_fmt formats[VPFE_NUM_FORMATS] = {
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{
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.fourcc = V4L2_PIX_FMT_YUYV,
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.code = MEDIA_BUS_FMT_YUYV8_2X8,
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.bitsperpixel = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_UYVY,
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.code = MEDIA_BUS_FMT_UYVY8_2X8,
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.bitsperpixel = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_YVYU,
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.code = MEDIA_BUS_FMT_YVYU8_2X8,
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.bitsperpixel = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_VYUY,
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.code = MEDIA_BUS_FMT_VYUY8_2X8,
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.bitsperpixel = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.code = MEDIA_BUS_FMT_SBGGR8_1X8,
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.bitsperpixel = 8,
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}, {
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.fourcc = V4L2_PIX_FMT_SGBRG8,
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.code = MEDIA_BUS_FMT_SGBRG8_1X8,
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.bitsperpixel = 8,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.code = MEDIA_BUS_FMT_SGRBG8_1X8,
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.bitsperpixel = 8,
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}, {
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.fourcc = V4L2_PIX_FMT_SRGGB8,
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.code = MEDIA_BUS_FMT_SRGGB8_1X8,
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.bitsperpixel = 8,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB565,
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.code = MEDIA_BUS_FMT_RGB565_2X8_LE,
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.bitsperpixel = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB565X,
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.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
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.bitsperpixel = 16,
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},
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};
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static int __subdev_get_format(struct vpfe_device *vpfe,
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struct v4l2_mbus_framefmt *fmt);
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static int vpfe_calc_format_size(struct vpfe_device *vpfe,
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const struct vpfe_fmt *fmt,
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struct v4l2_format *f);
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static struct vpfe_fmt *find_format_by_code(struct vpfe_device *vpfe,
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unsigned int code)
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{
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struct vpfe_fmt *fmt;
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unsigned int k;
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for (k = 0; k < vpfe->num_active_fmt; k++) {
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fmt = vpfe->active_fmt[k];
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if (fmt->code == code)
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return fmt;
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}
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return NULL;
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}
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static struct vpfe_fmt *find_format_by_pix(struct vpfe_device *vpfe,
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unsigned int pixelformat)
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{
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struct vpfe_fmt *fmt;
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unsigned int k;
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for (k = 0; k < vpfe->num_active_fmt; k++) {
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fmt = vpfe->active_fmt[k];
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if (fmt->fourcc == pixelformat)
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return fmt;
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}
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return NULL;
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}
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static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe,
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const struct vpfe_fmt *fmt)
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{
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struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
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unsigned int bus_width = sdinfo->vpfe_param.bus_width;
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u32 bpp, bus_width_bytes, clocksperpixel;
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bus_width_bytes = ALIGN(bus_width, 8) >> 3;
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clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width);
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bpp = clocksperpixel * bus_width_bytes;
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return bpp;
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}
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/* Print Four-character-code (FOURCC) */
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static char *print_fourcc(u32 fmt)
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{
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static char code[5];
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code[0] = (unsigned char)(fmt & 0xff);
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code[1] = (unsigned char)((fmt >> 8) & 0xff);
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code[2] = (unsigned char)((fmt >> 16) & 0xff);
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code[3] = (unsigned char)((fmt >> 24) & 0xff);
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code[4] = '\0';
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return code;
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}
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static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)
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{
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return ioread32(ccdc->ccdc_cfg.base_addr + offset);
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}
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static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)
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{
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iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);
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}
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static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)
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{
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return container_of(ccdc, struct vpfe_device, ccdc);
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}
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static inline
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struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_v4l2_buffer *vb)
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{
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return container_of(vb, struct vpfe_cap_buffer, vb);
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}
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static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)
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{
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vpfe_reg_write(ccdc, !!flag, VPFE_PCR);
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}
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static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)
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{
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unsigned int cfg;
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if (!flag) {
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cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);
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cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);
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} else {
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cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;
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}
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vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);
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}
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static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,
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struct v4l2_rect *image_win,
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enum ccdc_frmfmt frm_fmt,
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int bpp)
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{
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int horz_start, horz_nr_pixels;
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int vert_start, vert_nr_lines;
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int val, mid_img;
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/*
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* ppc - per pixel count. indicates how many pixels per cell
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* output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
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* raw capture this is 1
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*/
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horz_start = image_win->left * bpp;
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horz_nr_pixels = (image_win->width * bpp) - 1;
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vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |
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horz_nr_pixels, VPFE_HORZ_INFO);
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vert_start = image_win->top;
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if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
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vert_nr_lines = (image_win->height >> 1) - 1;
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vert_start >>= 1;
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/* configure VDINT0 */
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val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);
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} else {
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vert_nr_lines = image_win->height - 1;
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/*
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* configure VDINT0 and VDINT1. VDINT1 will be at half
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* of image height
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*/
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mid_img = vert_start + (image_win->height / 2);
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val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |
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(mid_img & VPFE_VDINT_VDINT1_MASK);
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}
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vpfe_reg_write(ccdc, val, VPFE_VDINT);
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vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |
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vert_start, VPFE_VERT_START);
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vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);
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}
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static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)
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{
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struct vpfe_device *vpfe = to_vpfe(ccdc);
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vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));
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vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));
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vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));
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vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));
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vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));
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vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));
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vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",
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vpfe_reg_read(ccdc, VPFE_SYNMODE));
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vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",
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vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));
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vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",
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vpfe_reg_read(ccdc, VPFE_HORZ_INFO));
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vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",
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vpfe_reg_read(ccdc, VPFE_VERT_START));
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vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",
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vpfe_reg_read(ccdc, VPFE_VERT_LINES));
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}
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static int
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vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,
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struct vpfe_ccdc_config_params_raw *ccdcparam)
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{
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struct vpfe_device *vpfe = to_vpfe(ccdc);
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u8 max_gamma, max_data;
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if (!ccdcparam->alaw.enable)
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return 0;
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max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
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max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
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if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||
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ccdcparam->data_sz > VPFE_CCDC_DATA_8BITS ||
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max_gamma > max_data) {
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vpfe_dbg(1, vpfe, "Invalid data line select\n");
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return -EINVAL;
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}
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return 0;
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}
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static void
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vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,
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struct vpfe_ccdc_config_params_raw *raw_params)
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{
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struct vpfe_ccdc_config_params_raw *config_params =
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&ccdc->ccdc_cfg.bayer.config_params;
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*config_params = *raw_params;
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}
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/*
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* vpfe_ccdc_restore_defaults()
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* This function will write defaults to all CCDC registers
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*/
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static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)
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{
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int i;
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/* Disable CCDC */
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vpfe_pcr_enable(ccdc, 0);
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/* set all registers to default value */
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for (i = 4; i <= 0x94; i += 4)
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vpfe_reg_write(ccdc, 0, i);
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vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);
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vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);
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}
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static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)
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{
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struct vpfe_device *vpfe = to_vpfe(ccdc);
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u32 dma_cntl, pcr;
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pcr = vpfe_reg_read(ccdc, VPFE_PCR);
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if (pcr)
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vpfe_dbg(1, vpfe, "VPFE_PCR is still set (%x)", pcr);
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dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);
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if ((dma_cntl & VPFE_DMA_CNTL_OVERFLOW))
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vpfe_dbg(1, vpfe, "VPFE_DMA_CNTL_OVERFLOW is still set (%x)",
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dma_cntl);
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/* Disable CCDC by resetting all register to default POR values */
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vpfe_ccdc_restore_defaults(ccdc);
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/* Disabled the module at the CONFIG level */
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vpfe_config_enable(ccdc, 0);
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pm_runtime_put_sync(dev);
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return 0;
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}
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static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)
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{
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struct vpfe_device *vpfe = to_vpfe(ccdc);
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struct vpfe_ccdc_config_params_raw raw_params;
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int x;
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if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)
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return -EINVAL;
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x = copy_from_user(&raw_params, params, sizeof(raw_params));
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if (x) {
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vpfe_dbg(1, vpfe,
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"%s: error in copying ccdc params, %d\n",
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__func__, x);
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return -EFAULT;
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}
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if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {
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vpfe_ccdc_update_raw_params(ccdc, &raw_params);
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return 0;
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}
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return -EINVAL;
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}
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/*
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* vpfe_ccdc_config_ycbcr()
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* This function will configure CCDC for YCbCr video capture
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*/
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static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)
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{
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struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;
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u32 syn_mode;
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/*
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* first restore the CCDC registers to default values
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* This is important since we assume default values to be set in
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* a lot of registers that we didn't touch
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*/
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vpfe_ccdc_restore_defaults(ccdc);
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/*
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* configure pixel format, frame format, configure video frame
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* format, enable output to SDRAM, enable internal timing generator
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* and 8bit pack mode
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*/
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syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<
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VPFE_SYN_MODE_INPMOD_SHIFT) |
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((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<
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VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |
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VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);
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/* setup BT.656 sync mode */
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if (params->bt656_enable) {
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vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);
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/*
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* configure the FID, VD, HD pin polarity,
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* fld,hd pol positive, vd negative, 8-bit data
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*/
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syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;
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if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
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syn_mode |= VPFE_SYN_MODE_10BITS;
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else
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syn_mode |= VPFE_SYN_MODE_8BITS;
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} else {
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/* y/c external sync mode */
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syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<
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VPFE_FID_POL_SHIFT) |
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((params->hd_pol & VPFE_HD_POL_MASK) <<
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VPFE_HD_POL_SHIFT) |
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((params->vd_pol & VPFE_VD_POL_MASK) <<
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VPFE_VD_POL_SHIFT));
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}
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vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
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/* configure video window */
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vpfe_ccdc_setwin(ccdc, ¶ms->win,
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params->frm_fmt, params->bytesperpixel);
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/*
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* configure the order of y cb cr in SDRAM, and disable latch
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* internal register on vsync
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*/
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if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
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vpfe_reg_write(ccdc,
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(params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
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VPFE_LATCH_ON_VSYNC_DISABLE |
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VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);
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else
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vpfe_reg_write(ccdc,
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(params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
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VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
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/*
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* configure the horizontal line offset. This should be a
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* on 32 byte boundary. So clear LSB 5 bits
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*/
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vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
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/* configure the memory line offset */
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if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
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/* two fields are interleaved in memory */
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vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,
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VPFE_SDOFST);
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}
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static void
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vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,
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struct vpfe_ccdc_black_clamp *bclamp)
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{
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u32 val;
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if (!bclamp->enable) {
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/* configure DCSub */
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val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;
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vpfe_reg_write(ccdc, val, VPFE_DCSUB);
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vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);
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return;
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}
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/*
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* Configure gain, Start pixel, No of line to be avg,
|
* No of pixel/line to be avg, & Enable the Black clamping
|
*/
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val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |
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((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<
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VPFE_BLK_ST_PXL_SHIFT) |
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((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<
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VPFE_BLK_SAMPLE_LINE_SHIFT) |
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((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<
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VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);
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vpfe_reg_write(ccdc, val, VPFE_CLAMP);
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/* If Black clamping is enable then make dcsub 0 */
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vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);
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}
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static void
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vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,
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struct vpfe_ccdc_black_compensation *bcomp)
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{
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u32 val;
|
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val = ((bcomp->b & VPFE_BLK_COMP_MASK) |
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((bcomp->gb & VPFE_BLK_COMP_MASK) <<
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VPFE_BLK_COMP_GB_COMP_SHIFT) |
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((bcomp->gr & VPFE_BLK_COMP_MASK) <<
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VPFE_BLK_COMP_GR_COMP_SHIFT) |
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((bcomp->r & VPFE_BLK_COMP_MASK) <<
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VPFE_BLK_COMP_R_COMP_SHIFT));
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vpfe_reg_write(ccdc, val, VPFE_BLKCMP);
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}
|
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/*
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* vpfe_ccdc_config_raw()
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* This function will configure CCDC for Raw capture mode
|
*/
|
static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)
|
{
|
struct vpfe_device *vpfe = to_vpfe(ccdc);
|
struct vpfe_ccdc_config_params_raw *config_params =
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&ccdc->ccdc_cfg.bayer.config_params;
|
struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;
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unsigned int syn_mode;
|
unsigned int val;
|
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/* Reset CCDC */
|
vpfe_ccdc_restore_defaults(ccdc);
|
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/* 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, ¶ms->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 = to_vpfe(ccdc);
|
|
vpfe_dbg(1, vpfe, "%s: if_type: %d, pixfmt:%s\n",
|
__func__, 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 = to_vpfe(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;
|
u32 bpp;
|
int ret = 0;
|
|
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 */
|
bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
|
vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, 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 supports get_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 vpfe_fmt *fmt;
|
struct v4l2_mbus_framefmt mbus_fmt;
|
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;
|
}
|
|
ret = __subdev_get_format(vpfe, &mbus_fmt);
|
if (ret)
|
return ret;
|
|
fmt = find_format_by_code(vpfe, mbus_fmt.code);
|
if (!fmt) {
|
vpfe_dbg(3, vpfe, "mbus code format (0x%08x) not found.\n",
|
mbus_fmt.code);
|
return -EINVAL;
|
}
|
|
/* Save current subdev format */
|
v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
|
vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
vpfe->fmt.fmt.pix.pixelformat = fmt->fourcc;
|
vpfe_calc_format_size(vpfe, fmt, &vpfe->fmt);
|
vpfe->current_vpfe_fmt = fmt;
|
|
/* Update the crop window based on found values */
|
vpfe->crop.top = 0;
|
vpfe->crop.left = 0;
|
vpfe->crop.width = mbus_fmt.width;
|
vpfe->crop.height = mbus_fmt.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;
|
|
ret = pm_runtime_resume_and_get(vpfe->pdev);
|
if (ret < 0)
|
return ret;
|
|
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);
|
bool fh_singular;
|
int ret;
|
|
mutex_lock(&vpfe->lock);
|
|
/* Save the singular status before we call the clean-up helper */
|
fh_singular = v4l2_fh_is_singular_file(file);
|
|
/* the release helper will cleanup any on-going streaming */
|
ret = _vb2_fop_release(file, NULL);
|
|
/*
|
* If this was the last open file.
|
* Then de-initialize hw module.
|
*/
|
if (fh_singular)
|
vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
|
|
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
|
*/
|
static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
|
{
|
dma_addr_t addr;
|
|
spin_lock(&vpfe->dma_queue_lock);
|
if (list_empty(&vpfe->dma_queue)) {
|
spin_unlock(&vpfe->dma_queue_lock);
|
return;
|
}
|
|
vpfe->next_frm = list_entry(vpfe->dma_queue.next,
|
struct vpfe_cap_buffer, list);
|
list_del(&vpfe->next_frm->list);
|
spin_unlock(&vpfe->dma_queue_lock);
|
|
addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0);
|
vpfe_set_sdr_addr(&vpfe->ccdc, addr);
|
}
|
|
static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
|
{
|
dma_addr_t addr;
|
|
addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 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)
|
{
|
vpfe->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
|
vpfe->cur_frm->vb.field = vpfe->fmt.fmt.pix.field;
|
vpfe->cur_frm->vb.sequence = vpfe->sequence++;
|
vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
|
vpfe->cur_frm = vpfe->next_frm;
|
}
|
|
static void vpfe_handle_interlaced_irq(struct vpfe_device *vpfe,
|
enum v4l2_field field)
|
{
|
int fid;
|
|
/* 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);
|
|
if (vpfe->stopping)
|
return;
|
|
/*
|
* 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);
|
} else {
|
/*
|
* 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
|
*/
|
if (vpfe->cur_frm == vpfe->next_frm)
|
vpfe_schedule_next_buffer(vpfe);
|
}
|
} else if (fid == 0) {
|
/*
|
* out of sync. Recover from any hardware out-of-sync.
|
* May loose one frame
|
*/
|
vpfe->field = fid;
|
}
|
}
|
|
/*
|
* 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 = vpfe->fmt.fmt.pix.field;
|
int intr_status, stopping = vpfe->stopping;
|
|
intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);
|
|
if (intr_status & VPFE_VDINT0) {
|
if (field == V4L2_FIELD_NONE) {
|
if (vpfe->cur_frm != vpfe->next_frm)
|
vpfe_process_buffer_complete(vpfe);
|
} else {
|
vpfe_handle_interlaced_irq(vpfe, field);
|
}
|
if (stopping) {
|
vpfe->stopping = false;
|
complete(&vpfe->capture_stop);
|
}
|
}
|
|
if (intr_status & VPFE_VDINT1 && !stopping) {
|
if (field == V4L2_FIELD_NONE &&
|
vpfe->cur_frm == vpfe->next_frm)
|
vpfe_schedule_next_buffer(vpfe);
|
}
|
|
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);
|
|
strscpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));
|
strscpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));
|
snprintf(cap->bus_info, sizeof(cap->bus_info),
|
"platform:%s", vpfe->v4l2_dev.name);
|
return 0;
|
}
|
|
/* get the format set at output pad of the adjacent subdev */
|
static int __subdev_get_format(struct vpfe_device *vpfe,
|
struct v4l2_mbus_framefmt *fmt)
|
{
|
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
|
struct v4l2_subdev_format sd_fmt;
|
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
|
int ret;
|
|
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
sd_fmt.pad = 0;
|
|
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
|
if (ret)
|
return ret;
|
|
*fmt = *mbus_fmt;
|
|
vpfe_dbg(1, vpfe, "%s: %dx%d code:%04X\n", __func__,
|
fmt->width, fmt->height, fmt->code);
|
|
return 0;
|
}
|
|
/* set the format at output pad of the adjacent subdev */
|
static int __subdev_set_format(struct vpfe_device *vpfe,
|
struct v4l2_mbus_framefmt *fmt)
|
{
|
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
|
struct v4l2_subdev_format sd_fmt;
|
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
|
int ret;
|
|
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
sd_fmt.pad = 0;
|
*mbus_fmt = *fmt;
|
|
ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sd_fmt);
|
if (ret)
|
return ret;
|
|
vpfe_dbg(1, vpfe, "%s %dx%d code:%04X\n", __func__,
|
fmt->width, fmt->height, fmt->code);
|
|
return 0;
|
}
|
|
static int vpfe_calc_format_size(struct vpfe_device *vpfe,
|
const struct vpfe_fmt *fmt,
|
struct v4l2_format *f)
|
{
|
u32 bpp;
|
|
if (!fmt) {
|
vpfe_dbg(3, vpfe, "No vpfe_fmt provided!\n");
|
return -EINVAL;
|
}
|
|
bpp = __get_bytesperpixel(vpfe, fmt);
|
|
/* pitch should be 32 bytes aligned */
|
f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.width * bpp, 32);
|
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
|
f->fmt.pix.height;
|
|
vpfe_dbg(3, vpfe, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
|
__func__, print_fourcc(f->fmt.pix.pixelformat),
|
f->fmt.pix.width, f->fmt.pix.height,
|
f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
|
|
return 0;
|
}
|
|
static int vpfe_g_fmt(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpfe_device *vpfe = video_drvdata(file);
|
|
*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;
|
|
sdinfo = vpfe->current_subdev;
|
if (!sdinfo->sd)
|
return -EINVAL;
|
|
if (f->index >= vpfe->num_active_fmt)
|
return -EINVAL;
|
|
fmt = vpfe->active_fmt[f->index];
|
|
f->pixelformat = fmt->fourcc;
|
|
vpfe_dbg(1, vpfe, "%s: mbus index: %d code: %x pixelformat: %s\n",
|
__func__, f->index, fmt->code, print_fourcc(fmt->fourcc));
|
|
return 0;
|
}
|
|
static int vpfe_try_fmt(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct vpfe_device *vpfe = video_drvdata(file);
|
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
|
const struct vpfe_fmt *fmt;
|
struct v4l2_subdev_frame_size_enum fse;
|
int ret, found;
|
|
fmt = find_format_by_pix(vpfe, f->fmt.pix.pixelformat);
|
if (!fmt) {
|
/* default to first entry */
|
vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
|
f->fmt.pix.pixelformat);
|
fmt = vpfe->active_fmt[0];
|
f->fmt.pix.pixelformat = fmt->fourcc;
|
}
|
|
f->fmt.pix.field = vpfe->fmt.fmt.pix.field;
|
|
/* check for/find a valid width/height */
|
ret = 0;
|
found = false;
|
fse.pad = 0;
|
fse.code = fmt->code;
|
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
for (fse.index = 0; ; fse.index++) {
|
ret = v4l2_subdev_call(sd, pad, enum_frame_size,
|
NULL, &fse);
|
if (ret)
|
break;
|
|
if (f->fmt.pix.width == fse.max_width &&
|
f->fmt.pix.height == fse.max_height) {
|
found = true;
|
break;
|
} else if (f->fmt.pix.width >= fse.min_width &&
|
f->fmt.pix.width <= fse.max_width &&
|
f->fmt.pix.height >= fse.min_height &&
|
f->fmt.pix.height <= fse.max_height) {
|
found = true;
|
break;
|
}
|
}
|
|
if (!found) {
|
/* use existing values as default */
|
f->fmt.pix.width = vpfe->fmt.fmt.pix.width;
|
f->fmt.pix.height = vpfe->fmt.fmt.pix.height;
|
}
|
|
/*
|
* Use current colorspace for now, it will get
|
* updated properly during s_fmt
|
*/
|
f->fmt.pix.colorspace = vpfe->fmt.fmt.pix.colorspace;
|
return vpfe_calc_format_size(vpfe, fmt, f);
|
}
|
|
static int vpfe_s_fmt(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpfe_device *vpfe = video_drvdata(file);
|
struct vpfe_fmt *f;
|
struct v4l2_mbus_framefmt mbus_fmt;
|
int ret;
|
|
/* 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 < 0)
|
return ret;
|
|
f = find_format_by_pix(vpfe, fmt->fmt.pix.pixelformat);
|
|
v4l2_fill_mbus_format(&mbus_fmt, &fmt->fmt.pix, f->code);
|
|
ret = __subdev_set_format(vpfe, &mbus_fmt);
|
if (ret)
|
return ret;
|
|
/* Just double check nothing has gone wrong */
|
if (mbus_fmt.code != f->code) {
|
vpfe_dbg(3, vpfe,
|
"%s subdev changed format on us, this should not happen\n",
|
__func__);
|
return -EINVAL;
|
}
|
|
v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
|
vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
vpfe->fmt.fmt.pix.pixelformat = f->fourcc;
|
vpfe_calc_format_size(vpfe, f, &vpfe->fmt);
|
*fmt = vpfe->fmt;
|
vpfe->current_vpfe_fmt = f;
|
|
/* 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 v4l2_subdev *sd = vpfe->current_subdev->sd;
|
struct vpfe_fmt *fmt;
|
int ret;
|
|
/* check for valid format */
|
fmt = find_format_by_pix(vpfe, fsize->pixel_format);
|
if (!fmt) {
|
vpfe_dbg(3, vpfe, "Invalid pixel code: %x\n",
|
fsize->pixel_format);
|
return -EINVAL;
|
}
|
|
memset(fsize->reserved, 0x0, sizeof(fsize->reserved));
|
|
memset(&fse, 0x0, sizeof(fse));
|
fse.index = fsize->index;
|
fse.pad = 0;
|
fse.code = fmt->code;
|
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse);
|
if (ret)
|
return ret;
|
|
vpfe_dbg(1, vpfe, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
|
__func__, 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, "%s: index: %d pixformat: %s size: %dx%d\n",
|
__func__, 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)
|
{
|
int i, j = 0;
|
|
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); 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;
|
struct i2c_client *client;
|
struct i2c_client *curr_client;
|
int i, j = 0;
|
|
curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd);
|
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
|
sdinfo = &cfg->sub_devs[i];
|
client = v4l2_get_subdevdata(sdinfo->sd);
|
if (client->addr == curr_client->addr &&
|
client->adapter->nr == curr_client->adapter->nr) {
|
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;
|
|
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);
|
|
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;
|
|
/* 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);
|
|
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;
|
|
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;
|
|
sdinfo = vpfe->current_subdev;
|
if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
|
return -ENODATA;
|
|
/* if trying to set the same std then nothing to do */
|
if (vpfe_standards[vpfe->std_index].std_id == std_id)
|
return 0;
|
|
/* 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;
|
|
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_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
|
* @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_devs: 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,
|
unsigned int *nbuffers, unsigned int *nplanes,
|
unsigned int sizes[], struct device *alloc_devs[])
|
{
|
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
|
unsigned size = vpfe->fmt.fmt.pix.sizeimage;
|
|
if (vq->num_buffers + *nbuffers < 3)
|
*nbuffers = 3 - vq->num_buffers;
|
|
if (*nplanes) {
|
if (sizes[0] < size)
|
return -EINVAL;
|
size = sizes[0];
|
}
|
|
*nplanes = 1;
|
sizes[0] = size;
|
|
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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_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;
|
|
vbuf->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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
|
struct vpfe_cap_buffer *buf = to_vpfe_buffer(vbuf);
|
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);
|
}
|
|
static void vpfe_return_all_buffers(struct vpfe_device *vpfe,
|
enum vb2_buffer_state state)
|
{
|
struct vpfe_cap_buffer *buf, *node;
|
unsigned long flags;
|
|
spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
|
list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) {
|
vb2_buffer_done(&buf->vb.vb2_buf, state);
|
list_del(&buf->list);
|
}
|
|
if (vpfe->cur_frm)
|
vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state);
|
|
if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm)
|
vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state);
|
|
vpfe->cur_frm = NULL;
|
vpfe->next_frm = NULL;
|
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_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);
|
|
vpfe->stopping = false;
|
init_completion(&vpfe->capture_stop);
|
|
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.vb2_buf, 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:
|
vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED);
|
vpfe_pcr_enable(&vpfe->ccdc, 0);
|
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;
|
int ret;
|
|
vpfe_pcr_enable(&vpfe->ccdc, 0);
|
|
/* Wait for the last frame to be captured */
|
vpfe->stopping = true;
|
wait_for_completion_timeout(&vpfe->capture_stop,
|
msecs_to_jiffies(250));
|
|
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 */
|
vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR);
|
}
|
|
static int vpfe_g_pixelaspect(struct file *file, void *priv,
|
int type, struct v4l2_fract *f)
|
{
|
struct vpfe_device *vpfe = video_drvdata(file);
|
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
|
return -EINVAL;
|
|
*f = 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);
|
|
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
|
return -EINVAL;
|
|
switch (s->target) {
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
case V4L2_SEL_TGT_CROP_DEFAULT:
|
s->r.left = 0;
|
s->r.top = 0;
|
s->r.width = vpfe_standards[vpfe->std_index].width;
|
s->r.height = vpfe_standards[vpfe->std_index].height;
|
break;
|
|
case V4L2_SEL_TGT_CROP:
|
s->r = vpfe->crop;
|
break;
|
|
default:
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
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;
|
u32 bpp;
|
|
/* 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 && !v4l2_rect_enclosed(&r, &s->r))
|
return -ERANGE;
|
|
if (s->flags & V4L2_SEL_FLAG_GE && !v4l2_rect_enclosed(&s->r, &r))
|
return -ERANGE;
|
|
s->r = vpfe->crop = r;
|
|
bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
|
vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, 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;
|
|
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, (void __user *)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_g_pixelaspect = vpfe_g_pixelaspect,
|
.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;
|
struct vpfe_fmt *fmt;
|
int ret = 0;
|
bool found = false;
|
int i, j, k;
|
|
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
|
if (vpfe->cfg->asd[i]->match.fwnode ==
|
asd[i].match.fwnode) {
|
sdinfo = &vpfe->cfg->sub_devs[i];
|
vpfe->sd[i] = subdev;
|
vpfe->sd[i]->grp_id = sdinfo->grp_id;
|
found = true;
|
break;
|
}
|
}
|
|
if (!found) {
|
vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);
|
return -EINVAL;
|
}
|
|
vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std;
|
|
vpfe->num_active_fmt = 0;
|
for (j = 0, i = 0; (ret != -EINVAL); ++j) {
|
memset(&mbus_code, 0, sizeof(mbus_code));
|
mbus_code.index = j;
|
mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
|
NULL, &mbus_code);
|
if (ret)
|
continue;
|
|
vpfe_dbg(3, vpfe,
|
"subdev %s: code: %04x idx: %d\n",
|
subdev->name, mbus_code.code, j);
|
|
for (k = 0; k < ARRAY_SIZE(formats); k++) {
|
fmt = &formats[k];
|
if (mbus_code.code != fmt->code)
|
continue;
|
vpfe->active_fmt[i] = fmt;
|
vpfe_dbg(3, vpfe,
|
"matched fourcc: %s code: %04x idx: %d\n",
|
print_fourcc(fmt->fourcc), mbus_code.code, i);
|
vpfe->num_active_fmt = ++i;
|
}
|
}
|
|
if (!i) {
|
vpfe_err(vpfe, "No suitable format reported by subdev %s\n",
|
subdev->name);
|
return -EINVAL;
|
}
|
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 */
|
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;
|
q->dev = vpfe->pdev;
|
|
err = vb2_queue_init(q);
|
if (err) {
|
vpfe_err(vpfe, "vb2_queue_init() failed\n");
|
goto probe_out;
|
}
|
|
INIT_LIST_HEAD(&vpfe->dma_queue);
|
|
vdev = &vpfe->video_dev;
|
strscpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));
|
vdev->release = video_device_release_empty;
|
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;
|
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
|
V4L2_CAP_READWRITE;
|
video_set_drvdata(vdev, vpfe);
|
err = video_register_device(&vpfe->video_dev, VFL_TYPE_VIDEO, -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 const struct v4l2_async_notifier_operations vpfe_async_ops = {
|
.bound = vpfe_async_bound,
|
.complete = vpfe_async_complete,
|
};
|
|
static struct vpfe_config *
|
vpfe_get_pdata(struct vpfe_device *vpfe)
|
{
|
struct device_node *endpoint = NULL;
|
struct device *dev = vpfe->pdev;
|
struct vpfe_subdev_info *sdinfo;
|
struct vpfe_config *pdata;
|
unsigned int flags;
|
unsigned int i;
|
int err;
|
|
dev_dbg(dev, "vpfe_get_pdata\n");
|
|
v4l2_async_notifier_init(&vpfe->notifier);
|
|
if (!IS_ENABLED(CONFIG_OF) || !dev->of_node)
|
return dev->platform_data;
|
|
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
|
if (!pdata)
|
return NULL;
|
|
for (i = 0; ; i++) {
|
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
|
struct device_node *rem;
|
|
endpoint = of_graph_get_next_endpoint(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;
|
strscpy(sdinfo->inputs[0].name, "Camera",
|
sizeof(sdinfo->inputs[0].name));
|
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_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
|
&bus_cfg);
|
if (err) {
|
dev_err(dev, "Could not parse the endpoint\n");
|
goto cleanup;
|
}
|
|
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(dev, "Invalid bus width.\n");
|
goto cleanup;
|
}
|
|
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(dev, "Remote device at %pOF not found\n",
|
endpoint);
|
goto cleanup;
|
}
|
|
pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
|
&vpfe->notifier, of_fwnode_handle(rem),
|
sizeof(struct v4l2_async_subdev));
|
of_node_put(rem);
|
if (IS_ERR(pdata->asd[i]))
|
goto cleanup;
|
}
|
|
of_node_put(endpoint);
|
return pdata;
|
|
cleanup:
|
v4l2_async_notifier_cleanup(&vpfe->notifier);
|
of_node_put(endpoint);
|
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;
|
struct vpfe_device *vpfe;
|
struct vpfe_ccdc *ccdc;
|
struct resource *res;
|
int ret;
|
|
vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);
|
if (!vpfe)
|
return -ENOMEM;
|
|
vpfe->pdev = &pdev->dev;
|
|
vpfe_cfg = vpfe_get_pdata(vpfe);
|
if (!vpfe_cfg) {
|
dev_err(&pdev->dev, "No platform data\n");
|
return -EINVAL;
|
}
|
|
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)) {
|
ret = PTR_ERR(ccdc->ccdc_cfg.base_addr);
|
goto probe_out_cleanup;
|
}
|
|
ret = platform_get_irq(pdev, 0);
|
if (ret <= 0) {
|
ret = -ENODEV;
|
goto probe_out_cleanup;
|
}
|
vpfe->irq = ret;
|
|
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");
|
ret = -EINVAL;
|
goto probe_out_cleanup;
|
}
|
|
ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
|
if (ret) {
|
vpfe_err(vpfe,
|
"Unable to register v4l2 device.\n");
|
goto probe_out_cleanup;
|
}
|
|
/* 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 */
|
ret = pm_runtime_resume_and_get(&pdev->dev);
|
if (ret < 0) {
|
vpfe_err(vpfe, "Unable to resume device.\n");
|
goto probe_out_v4l2_unregister;
|
}
|
|
vpfe_ccdc_config_defaults(ccdc);
|
|
pm_runtime_put_sync(&pdev->dev);
|
|
vpfe->sd = devm_kcalloc(&pdev->dev,
|
ARRAY_SIZE(vpfe->cfg->asd),
|
sizeof(struct v4l2_subdev *),
|
GFP_KERNEL);
|
if (!vpfe->sd) {
|
ret = -ENOMEM;
|
goto probe_out_v4l2_unregister;
|
}
|
|
vpfe->notifier.ops = &vpfe_async_ops;
|
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_cleanup:
|
v4l2_async_notifier_cleanup(&vpfe->notifier);
|
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);
|
|
pm_runtime_disable(&pdev->dev);
|
|
v4l2_async_notifier_unregister(&vpfe->notifier);
|
v4l2_async_notifier_cleanup(&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 vpfe_device *vpfe = dev_get_drvdata(dev);
|
struct vpfe_ccdc *ccdc = &vpfe->ccdc;
|
|
/* only do full suspend if streaming has started */
|
if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
|
/*
|
* ignore RPM resume errors here, as it is already too late.
|
* A check like that should happen earlier, either at
|
* open() or just before start streaming.
|
*/
|
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 vpfe_device *vpfe = dev_get_drvdata(dev);
|
struct vpfe_ccdc *ccdc = &vpfe->ccdc;
|
|
/* only do full resume if streaming has started */
|
if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
|
/* 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,
|
.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);
|
