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- /*
- * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module
- *
- * Copyright (C) 2012 Texas Instruments, Inc.
- *
- * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
- #include <linux/module.h>
- #include <linux/uaccess.h>
- #include <linux/delay.h>
- #include <linux/device.h>
- #include <linux/dma-mapping.h>
- #include <linux/mm.h>
- #include <linux/sched.h>
- #include "iss.h"
- #include "iss_regs.h"
- #include "iss_ipipeif.h"
- static const unsigned int ipipeif_fmts[] = {
- MEDIA_BUS_FMT_SGRBG10_1X10,
- MEDIA_BUS_FMT_SRGGB10_1X10,
- MEDIA_BUS_FMT_SBGGR10_1X10,
- MEDIA_BUS_FMT_SGBRG10_1X10,
- MEDIA_BUS_FMT_UYVY8_1X16,
- MEDIA_BUS_FMT_YUYV8_1X16,
- };
- /*
- * ipipeif_print_status - Print current IPIPEIF Module register values.
- * @ipipeif: Pointer to ISS ISP IPIPEIF device.
- *
- * Also prints other debug information stored in the IPIPEIF module.
- */
- #define IPIPEIF_PRINT_REGISTER(iss, name)\
- dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \
- iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_##name))
- #define ISIF_PRINT_REGISTER(iss, name)\
- dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \
- iss_reg_read(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_##name))
- #define ISP5_PRINT_REGISTER(iss, name)\
- dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \
- iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_##name))
- static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif)
- {
- struct iss_device *iss = to_iss_device(ipipeif);
- dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n");
- IPIPEIF_PRINT_REGISTER(iss, CFG1);
- IPIPEIF_PRINT_REGISTER(iss, CFG2);
- ISIF_PRINT_REGISTER(iss, SYNCEN);
- ISIF_PRINT_REGISTER(iss, CADU);
- ISIF_PRINT_REGISTER(iss, CADL);
- ISIF_PRINT_REGISTER(iss, MODESET);
- ISIF_PRINT_REGISTER(iss, CCOLP);
- ISIF_PRINT_REGISTER(iss, SPH);
- ISIF_PRINT_REGISTER(iss, LNH);
- ISIF_PRINT_REGISTER(iss, LNV);
- ISIF_PRINT_REGISTER(iss, VDINT(0));
- ISIF_PRINT_REGISTER(iss, HSIZE);
- ISP5_PRINT_REGISTER(iss, SYSCONFIG);
- ISP5_PRINT_REGISTER(iss, CTRL);
- ISP5_PRINT_REGISTER(iss, IRQSTATUS(0));
- ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0));
- ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0));
- dev_dbg(iss->dev, "-----------------------------------------------\n");
- }
- static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
- {
- struct iss_device *iss = to_iss_device(ipipeif);
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
- ISIF_SYNCEN_DWEN, enable ? ISIF_SYNCEN_DWEN : 0);
- }
- /*
- * ipipeif_enable - Enable/Disable IPIPEIF.
- * @enable: enable flag
- *
- */
- static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
- {
- struct iss_device *iss = to_iss_device(ipipeif);
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
- ISIF_SYNCEN_SYEN, enable ? ISIF_SYNCEN_SYEN : 0);
- }
- /* -----------------------------------------------------------------------------
- * Format- and pipeline-related configuration helpers
- */
- /*
- * ipipeif_set_outaddr - Set memory address to save output image
- * @ipipeif: Pointer to ISP IPIPEIF device.
- * @addr: 32-bit memory address aligned on 32 byte boundary.
- *
- * Sets the memory address where the output will be saved.
- */
- static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr)
- {
- struct iss_device *iss = to_iss_device(ipipeif);
- /* Save address split in Base Address H & L */
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADU,
- (addr >> (16 + 5)) & ISIF_CADU_MASK);
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADL,
- (addr >> 5) & ISIF_CADL_MASK);
- }
- static void ipipeif_configure(struct iss_ipipeif_device *ipipeif)
- {
- struct iss_device *iss = to_iss_device(ipipeif);
- const struct iss_format_info *info;
- struct v4l2_mbus_framefmt *format;
- u32 isif_ccolp = 0;
- omap4iss_configure_bridge(iss, ipipeif->input);
- /* IPIPEIF_PAD_SINK */
- format = &ipipeif->formats[IPIPEIF_PAD_SINK];
- /* IPIPEIF with YUV422 input from ISIF */
- iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG1,
- IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK);
- /* Select ISIF/IPIPEIF input format */
- switch (format->code) {
- case MEDIA_BUS_FMT_UYVY8_1X16:
- case MEDIA_BUS_FMT_YUYV8_1X16:
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
- ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
- ISIF_MODESET_CCDW_MASK,
- ISIF_MODESET_INPMOD_YCBCR16);
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
- IPIPEIF_CFG2_YUV8, IPIPEIF_CFG2_YUV16);
- break;
- case MEDIA_BUS_FMT_SGRBG10_1X10:
- isif_ccolp = ISIF_CCOLP_CP0_F0_GR |
- ISIF_CCOLP_CP1_F0_R |
- ISIF_CCOLP_CP2_F0_B |
- ISIF_CCOLP_CP3_F0_GB;
- goto cont_raw;
- case MEDIA_BUS_FMT_SRGGB10_1X10:
- isif_ccolp = ISIF_CCOLP_CP0_F0_R |
- ISIF_CCOLP_CP1_F0_GR |
- ISIF_CCOLP_CP2_F0_GB |
- ISIF_CCOLP_CP3_F0_B;
- goto cont_raw;
- case MEDIA_BUS_FMT_SBGGR10_1X10:
- isif_ccolp = ISIF_CCOLP_CP0_F0_B |
- ISIF_CCOLP_CP1_F0_GB |
- ISIF_CCOLP_CP2_F0_GR |
- ISIF_CCOLP_CP3_F0_R;
- goto cont_raw;
- case MEDIA_BUS_FMT_SGBRG10_1X10:
- isif_ccolp = ISIF_CCOLP_CP0_F0_GB |
- ISIF_CCOLP_CP1_F0_B |
- ISIF_CCOLP_CP2_F0_R |
- ISIF_CCOLP_CP3_F0_GR;
- cont_raw:
- iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
- IPIPEIF_CFG2_YUV16);
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
- ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
- ISIF_MODESET_CCDW_MASK, ISIF_MODESET_INPMOD_RAW |
- ISIF_MODESET_CCDW_2BIT);
- info = omap4iss_video_format_info(format->code);
- iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CGAMMAWD,
- ISIF_CGAMMAWD_GWDI_MASK,
- ISIF_CGAMMAWD_GWDI(info->bpp));
- /* Set RAW Bayer pattern */
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CCOLP,
- isif_ccolp);
- break;
- }
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SPH, 0 & ISIF_SPH_MASK);
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNH,
- (format->width - 1) & ISIF_LNH_MASK);
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNV,
- (format->height - 1) & ISIF_LNV_MASK);
- /* Generate ISIF0 on the last line of the image */
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_VDINT(0),
- format->height - 1);
- /* IPIPEIF_PAD_SOURCE_ISIF_SF */
- format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF];
- iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_HSIZE,
- (ipipeif->video_out.bpl_value >> 5) &
- ISIF_HSIZE_HSIZE_MASK);
- /* IPIPEIF_PAD_SOURCE_VP */
- /* Do nothing? */
- }
- /* -----------------------------------------------------------------------------
- * Interrupt handling
- */
- static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
- {
- struct iss_buffer *buffer;
- /* The ISIF generates VD0 interrupts even when writes are disabled.
- * deal with it anyway). Disabling the ISIF when no buffer is available
- * is thus not be enough, we need to handle the situation explicitly.
- */
- if (list_empty(&ipipeif->video_out.dmaqueue))
- return;
- ipipeif_write_enable(ipipeif, 0);
- buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
- if (!buffer)
- return;
- ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
- ipipeif_write_enable(ipipeif, 1);
- }
- /*
- * omap4iss_ipipeif_isr - Configure ipipeif during interframe time.
- * @ipipeif: Pointer to ISP IPIPEIF device.
- * @events: IPIPEIF events
- */
- void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events)
- {
- if (omap4iss_module_sync_is_stopping(&ipipeif->wait,
- &ipipeif->stopping))
- return;
- if ((events & ISP5_IRQ_ISIF_INT(0)) &&
- (ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
- ipipeif_isr_buffer(ipipeif);
- }
- /* -----------------------------------------------------------------------------
- * ISP video operations
- */
- static int ipipeif_video_queue(struct iss_video *video,
- struct iss_buffer *buffer)
- {
- struct iss_ipipeif_device *ipipeif = container_of(video,
- struct iss_ipipeif_device, video_out);
- if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
- return -ENODEV;
- ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
- /*
- * If streaming was enabled before there was a buffer queued
- * or underrun happened in the ISR, the hardware was not enabled
- * and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
- * Enable it now.
- */
- if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
- if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
- ipipeif_write_enable(ipipeif, 1);
- ipipeif_enable(ipipeif, 1);
- iss_video_dmaqueue_flags_clr(video);
- }
- return 0;
- }
- static const struct iss_video_operations ipipeif_video_ops = {
- .queue = ipipeif_video_queue,
- };
- /* -----------------------------------------------------------------------------
- * V4L2 subdev operations
- */
- #define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\
- OMAP4_ISS_ISP_SUBCLK_ISIF)
- /*
- * ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module
- * @sd: ISP IPIPEIF V4L2 subdevice
- * @enable: Enable/disable stream
- */
- static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
- {
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct iss_device *iss = to_iss_device(ipipeif);
- struct iss_video *video_out = &ipipeif->video_out;
- int ret = 0;
- if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) {
- if (enable == ISS_PIPELINE_STREAM_STOPPED)
- return 0;
- omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK);
- }
- switch (enable) {
- case ISS_PIPELINE_STREAM_CONTINUOUS:
- ipipeif_configure(ipipeif);
- ipipeif_print_status(ipipeif);
- /*
- * When outputting to memory with no buffer available, let the
- * buffer queue handler start the hardware. A DMA queue flag
- * ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
- * a buffer available.
- */
- if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY &&
- !(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED))
- break;
- atomic_set(&ipipeif->stopping, 0);
- if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
- ipipeif_write_enable(ipipeif, 1);
- ipipeif_enable(ipipeif, 1);
- iss_video_dmaqueue_flags_clr(video_out);
- break;
- case ISS_PIPELINE_STREAM_STOPPED:
- if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED)
- return 0;
- if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait,
- &ipipeif->stopping))
- ret = -ETIMEDOUT;
- if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
- ipipeif_write_enable(ipipeif, 0);
- ipipeif_enable(ipipeif, 0);
- omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK);
- iss_video_dmaqueue_flags_clr(video_out);
- break;
- }
- ipipeif->state = enable;
- return ret;
- }
- static struct v4l2_mbus_framefmt *
- __ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
- struct v4l2_subdev_pad_config *cfg, unsigned int pad,
- enum v4l2_subdev_format_whence which)
- {
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
- return &ipipeif->formats[pad];
- }
- /*
- * ipipeif_try_format - Try video format on a pad
- * @ipipeif: ISS IPIPEIF device
- * @cfg: V4L2 subdev pad config
- * @pad: Pad number
- * @fmt: Format
- */
- static void
- ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
- struct v4l2_subdev_pad_config *cfg, unsigned int pad,
- struct v4l2_mbus_framefmt *fmt,
- enum v4l2_subdev_format_whence which)
- {
- struct v4l2_mbus_framefmt *format;
- unsigned int width = fmt->width;
- unsigned int height = fmt->height;
- unsigned int i;
- switch (pad) {
- case IPIPEIF_PAD_SINK:
- /* TODO: If the IPIPEIF output formatter pad is connected
- * directly to the resizer, only YUV formats can be used.
- */
- for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) {
- if (fmt->code == ipipeif_fmts[i])
- break;
- }
- /* If not found, use SGRBG10 as default */
- if (i >= ARRAY_SIZE(ipipeif_fmts))
- fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
- /* Clamp the input size. */
- fmt->width = clamp_t(u32, width, 1, 8192);
- fmt->height = clamp_t(u32, height, 1, 8192);
- break;
- case IPIPEIF_PAD_SOURCE_ISIF_SF:
- format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
- which);
- memcpy(fmt, format, sizeof(*fmt));
- /* The data formatter truncates the number of horizontal output
- * pixels to a multiple of 16. To avoid clipping data, allow
- * callers to request an output size bigger than the input size
- * up to the nearest multiple of 16.
- */
- fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
- fmt->width &= ~15;
- fmt->height = clamp_t(u32, height, 32, fmt->height);
- break;
- case IPIPEIF_PAD_SOURCE_VP:
- format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
- which);
- memcpy(fmt, format, sizeof(*fmt));
- fmt->width = clamp_t(u32, width, 32, fmt->width);
- fmt->height = clamp_t(u32, height, 32, fmt->height);
- break;
- }
- /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
- * stored on 2 bytes.
- */
- fmt->colorspace = V4L2_COLORSPACE_SRGB;
- fmt->field = V4L2_FIELD_NONE;
- }
- /*
- * ipipeif_enum_mbus_code - Handle pixel format enumeration
- * @sd : pointer to v4l2 subdev structure
- * @cfg : V4L2 subdev pad config
- * @code : pointer to v4l2_subdev_mbus_code_enum structure
- * return -EINVAL or zero on success
- */
- static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_mbus_code_enum *code)
- {
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
- switch (code->pad) {
- case IPIPEIF_PAD_SINK:
- if (code->index >= ARRAY_SIZE(ipipeif_fmts))
- return -EINVAL;
- code->code = ipipeif_fmts[code->index];
- break;
- case IPIPEIF_PAD_SOURCE_ISIF_SF:
- case IPIPEIF_PAD_SOURCE_VP:
- /* No format conversion inside IPIPEIF */
- if (code->index != 0)
- return -EINVAL;
- format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
- code->which);
- code->code = format->code;
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_frame_size_enum *fse)
- {
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt format;
- if (fse->index != 0)
- return -EINVAL;
- format.code = fse->code;
- format.width = 1;
- format.height = 1;
- ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
- fse->min_width = format.width;
- fse->min_height = format.height;
- if (format.code != fse->code)
- return -EINVAL;
- format.code = fse->code;
- format.width = -1;
- format.height = -1;
- ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
- fse->max_width = format.width;
- fse->max_height = format.height;
- return 0;
- }
- /*
- * ipipeif_get_format - Retrieve the video format on a pad
- * @sd : ISP IPIPEIF V4L2 subdevice
- * @cfg: V4L2 subdev pad config
- * @fmt: Format
- *
- * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
- * to the format type.
- */
- static int ipipeif_get_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *fmt)
- {
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
- format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
- if (!format)
- return -EINVAL;
- fmt->format = *format;
- return 0;
- }
- /*
- * ipipeif_set_format - Set the video format on a pad
- * @sd : ISP IPIPEIF V4L2 subdevice
- * @cfg: V4L2 subdev pad config
- * @fmt: Format
- *
- * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
- * to the format type.
- */
- static int ipipeif_set_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *fmt)
- {
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
- format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
- if (!format)
- return -EINVAL;
- ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
- *format = fmt->format;
- /* Propagate the format from sink to source */
- if (fmt->pad == IPIPEIF_PAD_SINK) {
- format = __ipipeif_get_format(ipipeif, cfg,
- IPIPEIF_PAD_SOURCE_ISIF_SF,
- fmt->which);
- *format = fmt->format;
- ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_ISIF_SF,
- format, fmt->which);
- format = __ipipeif_get_format(ipipeif, cfg,
- IPIPEIF_PAD_SOURCE_VP,
- fmt->which);
- *format = fmt->format;
- ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_VP, format,
- fmt->which);
- }
- return 0;
- }
- static int ipipeif_link_validate(struct v4l2_subdev *sd,
- struct media_link *link,
- struct v4l2_subdev_format *source_fmt,
- struct v4l2_subdev_format *sink_fmt)
- {
- /* Check if the two ends match */
- if (source_fmt->format.width != sink_fmt->format.width ||
- source_fmt->format.height != sink_fmt->format.height)
- return -EPIPE;
- if (source_fmt->format.code != sink_fmt->format.code)
- return -EPIPE;
- return 0;
- }
- /*
- * ipipeif_init_formats - Initialize formats on all pads
- * @sd: ISP IPIPEIF V4L2 subdevice
- * @fh: V4L2 subdev file handle
- *
- * Initialize all pad formats with default values. If fh is not NULL, try
- * formats are initialized on the file handle. Otherwise active formats are
- * initialized on the device.
- */
- static int ipipeif_init_formats(struct v4l2_subdev *sd,
- struct v4l2_subdev_fh *fh)
- {
- struct v4l2_subdev_format format;
- memset(&format, 0, sizeof(format));
- format.pad = IPIPEIF_PAD_SINK;
- format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
- format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
- format.format.width = 4096;
- format.format.height = 4096;
- ipipeif_set_format(sd, fh ? fh->pad : NULL, &format);
- return 0;
- }
- /* V4L2 subdev video operations */
- static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
- .s_stream = ipipeif_set_stream,
- };
- /* V4L2 subdev pad operations */
- static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
- .enum_mbus_code = ipipeif_enum_mbus_code,
- .enum_frame_size = ipipeif_enum_frame_size,
- .get_fmt = ipipeif_get_format,
- .set_fmt = ipipeif_set_format,
- .link_validate = ipipeif_link_validate,
- };
- /* V4L2 subdev operations */
- static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
- .video = &ipipeif_v4l2_video_ops,
- .pad = &ipipeif_v4l2_pad_ops,
- };
- /* V4L2 subdev internal operations */
- static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
- .open = ipipeif_init_formats,
- };
- /* -----------------------------------------------------------------------------
- * Media entity operations
- */
- /*
- * ipipeif_link_setup - Setup IPIPEIF connections
- * @entity: IPIPEIF media entity
- * @local: Pad at the local end of the link
- * @remote: Pad at the remote end of the link
- * @flags: Link flags
- *
- * return -EINVAL or zero on success
- */
- static int ipipeif_link_setup(struct media_entity *entity,
- const struct media_pad *local,
- const struct media_pad *remote, u32 flags)
- {
- struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
- struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
- struct iss_device *iss = to_iss_device(ipipeif);
- switch (local->index | media_entity_type(remote->entity)) {
- case IPIPEIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
- /* Read from the sensor CSI2a or CSI2b. */
- if (!(flags & MEDIA_LNK_FL_ENABLED)) {
- ipipeif->input = IPIPEIF_INPUT_NONE;
- break;
- }
- if (ipipeif->input != IPIPEIF_INPUT_NONE)
- return -EBUSY;
- if (remote->entity == &iss->csi2a.subdev.entity)
- ipipeif->input = IPIPEIF_INPUT_CSI2A;
- else if (remote->entity == &iss->csi2b.subdev.entity)
- ipipeif->input = IPIPEIF_INPUT_CSI2B;
- break;
- case IPIPEIF_PAD_SOURCE_ISIF_SF | MEDIA_ENT_T_DEVNODE:
- /* Write to memory */
- if (flags & MEDIA_LNK_FL_ENABLED) {
- if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY)
- return -EBUSY;
- ipipeif->output |= IPIPEIF_OUTPUT_MEMORY;
- } else {
- ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY;
- }
- break;
- case IPIPEIF_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
- /* Send to IPIPE/RESIZER */
- if (flags & MEDIA_LNK_FL_ENABLED) {
- if (ipipeif->output & ~IPIPEIF_OUTPUT_VP)
- return -EBUSY;
- ipipeif->output |= IPIPEIF_OUTPUT_VP;
- } else {
- ipipeif->output &= ~IPIPEIF_OUTPUT_VP;
- }
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- /* media operations */
- static const struct media_entity_operations ipipeif_media_ops = {
- .link_setup = ipipeif_link_setup,
- .link_validate = v4l2_subdev_link_validate,
- };
- /*
- * ipipeif_init_entities - Initialize V4L2 subdev and media entity
- * @ipipeif: ISS ISP IPIPEIF module
- *
- * Return 0 on success and a negative error code on failure.
- */
- static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
- {
- struct v4l2_subdev *sd = &ipipeif->subdev;
- struct media_pad *pads = ipipeif->pads;
- struct media_entity *me = &sd->entity;
- int ret;
- ipipeif->input = IPIPEIF_INPUT_NONE;
- v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
- sd->internal_ops = &ipipeif_v4l2_internal_ops;
- strlcpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name));
- sd->grp_id = 1 << 16; /* group ID for iss subdevs */
- v4l2_set_subdevdata(sd, ipipeif);
- sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
- pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE;
- pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
- me->ops = &ipipeif_media_ops;
- ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads, 0);
- if (ret < 0)
- return ret;
- ipipeif_init_formats(sd, NULL);
- ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- ipipeif->video_out.ops = &ipipeif_video_ops;
- ipipeif->video_out.iss = to_iss_device(ipipeif);
- ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
- ipipeif->video_out.bpl_alignment = 32;
- ipipeif->video_out.bpl_zero_padding = 1;
- ipipeif->video_out.bpl_max = 0x1ffe0;
- ret = omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
- if (ret < 0)
- return ret;
- /* Connect the IPIPEIF subdev to the video node. */
- ret = media_entity_create_link(&ipipeif->subdev.entity,
- IPIPEIF_PAD_SOURCE_ISIF_SF,
- &ipipeif->video_out.video.entity, 0, 0);
- if (ret < 0)
- return ret;
- return 0;
- }
- void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
- {
- v4l2_device_unregister_subdev(&ipipeif->subdev);
- omap4iss_video_unregister(&ipipeif->video_out);
- }
- int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
- struct v4l2_device *vdev)
- {
- int ret;
- /* Register the subdev and video node. */
- ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
- if (ret < 0)
- goto error;
- ret = omap4iss_video_register(&ipipeif->video_out, vdev);
- if (ret < 0)
- goto error;
- return 0;
- error:
- omap4iss_ipipeif_unregister_entities(ipipeif);
- return ret;
- }
- /* -----------------------------------------------------------------------------
- * ISP IPIPEIF initialisation and cleanup
- */
- /*
- * omap4iss_ipipeif_init - IPIPEIF module initialization.
- * @iss: Device pointer specific to the OMAP4 ISS.
- *
- * TODO: Get the initialisation values from platform data.
- *
- * Return 0 on success or a negative error code otherwise.
- */
- int omap4iss_ipipeif_init(struct iss_device *iss)
- {
- struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
- ipipeif->state = ISS_PIPELINE_STREAM_STOPPED;
- init_waitqueue_head(&ipipeif->wait);
- return ipipeif_init_entities(ipipeif);
- }
- /*
- * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
- * @iss: Device pointer specific to the OMAP4 ISS.
- */
- void omap4iss_ipipeif_cleanup(struct iss_device *iss)
- {
- struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
- media_entity_cleanup(&ipipeif->subdev.entity);
- }
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