diff options
Diffstat (limited to 'drivers/media/platform/ti/davinci/vpif_capture.c')
| -rw-r--r-- | drivers/media/platform/ti/davinci/vpif_capture.c | 1823 |
1 files changed, 1823 insertions, 0 deletions
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c new file mode 100644 index 000000000000..bf76c5c83743 --- /dev/null +++ b/drivers/media/platform/ti/davinci/vpif_capture.c @@ -0,0 +1,1823 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2009 Texas Instruments Inc + * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com> + * + * TODO : add support for VBI & HBI data service + * add static buffer allocation + */ + +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/of_graph.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include <media/v4l2-fwnode.h> +#include <media/v4l2-ioctl.h> +#include <media/i2c/tvp514x.h> +#include <media/v4l2-mediabus.h> + +#include <linux/videodev2.h> + +#include "vpif.h" +#include "vpif_capture.h" + +MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(VPIF_CAPTURE_VERSION); + +#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) +#define vpif_dbg(level, debug, fmt, arg...) \ + v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) + +static int debug = 1; + +module_param(debug, int, 0644); + +MODULE_PARM_DESC(debug, "Debug level 0-1"); + +#define VPIF_DRIVER_NAME "vpif_capture" +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); + +/* global variables */ +static struct vpif_device vpif_obj = { {NULL} }; +static struct device *vpif_dev; +static void vpif_calculate_offsets(struct channel_obj *ch); +static void vpif_config_addr(struct channel_obj *ch, int muxmode); + +static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} }; + +/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */ +static int ycmux_mode; + +static inline +struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb) +{ + return container_of(vb, struct vpif_cap_buffer, vb); +} + +/** + * vpif_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 vpif_buffer_prepare(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct vb2_queue *q = vb->vb2_queue; + struct channel_obj *ch = vb2_get_drv_priv(q); + struct common_obj *common; + unsigned long addr; + + vpif_dbg(2, debug, "vpif_buffer_prepare\n"); + + common = &ch->common[VPIF_VIDEO_INDEX]; + + vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage); + if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) + return -EINVAL; + + vbuf->field = common->fmt.fmt.pix.field; + + addr = vb2_dma_contig_plane_dma_addr(vb, 0); + if (!IS_ALIGNED((addr + common->ytop_off), 8) || + !IS_ALIGNED((addr + common->ybtm_off), 8) || + !IS_ALIGNED((addr + common->ctop_off), 8) || + !IS_ALIGNED((addr + common->cbtm_off), 8)) { + vpif_dbg(1, debug, "offset is not aligned\n"); + return -EINVAL; + } + + return 0; +} + +/** + * vpif_buffer_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 vpif_buffer_queue_setup(struct vb2_queue *vq, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + struct channel_obj *ch = vb2_get_drv_priv(vq); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + unsigned size = common->fmt.fmt.pix.sizeimage; + + vpif_dbg(2, debug, "vpif_buffer_setup\n"); + + if (*nplanes) { + if (sizes[0] < size) + return -EINVAL; + size = sizes[0]; + } + + if (vq->num_buffers + *nbuffers < 3) + *nbuffers = 3 - vq->num_buffers; + + *nplanes = 1; + sizes[0] = size; + + /* Calculate the offset for Y and C data in the buffer */ + vpif_calculate_offsets(ch); + + return 0; +} + +/** + * vpif_buffer_queue : Callback function to add buffer to DMA queue + * @vb: ptr to vb2_buffer + */ +static void vpif_buffer_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); + struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf); + struct common_obj *common; + unsigned long flags; + + common = &ch->common[VPIF_VIDEO_INDEX]; + + vpif_dbg(2, debug, "vpif_buffer_queue\n"); + + spin_lock_irqsave(&common->irqlock, flags); + /* add the buffer to the DMA queue */ + list_add_tail(&buf->list, &common->dma_queue); + spin_unlock_irqrestore(&common->irqlock, flags); +} + +/** + * vpif_start_streaming : Starts the DMA engine for streaming + * @vq: ptr to vb2_buffer + * @count: number of buffers + */ +static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct vpif_capture_config *vpif_config_data = + vpif_dev->platform_data; + struct channel_obj *ch = vb2_get_drv_priv(vq); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct vpif_params *vpif = &ch->vpifparams; + struct vpif_cap_buffer *buf, *tmp; + unsigned long addr, flags; + int ret; + + /* Initialize field_id */ + ch->field_id = 0; + + /* configure 1 or 2 channel mode */ + if (vpif_config_data->setup_input_channel_mode) { + ret = vpif_config_data-> + setup_input_channel_mode(vpif->std_info.ycmux_mode); + if (ret < 0) { + vpif_dbg(1, debug, "can't set vpif channel mode\n"); + goto err; + } + } + + ret = v4l2_subdev_call(ch->sd, video, s_stream, 1); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { + vpif_dbg(1, debug, "stream on failed in subdev\n"); + goto err; + } + + /* Call vpif_set_params function to set the parameters and addresses */ + ret = vpif_set_video_params(vpif, ch->channel_id); + if (ret < 0) { + vpif_dbg(1, debug, "can't set video params\n"); + goto err; + } + + ycmux_mode = ret; + vpif_config_addr(ch, ret); + + /* Get the next frame from the buffer queue */ + spin_lock_irqsave(&common->irqlock, flags); + common->cur_frm = common->next_frm = list_entry(common->dma_queue.next, + struct vpif_cap_buffer, list); + /* Remove buffer from the buffer queue */ + list_del(&common->cur_frm->list); + spin_unlock_irqrestore(&common->irqlock, flags); + + addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0); + + common->set_addr(addr + common->ytop_off, + addr + common->ybtm_off, + addr + common->ctop_off, + addr + common->cbtm_off); + + /** + * Set interrupt for both the fields in VPIF Register enable channel in + * VPIF register + */ + channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; + if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { + channel0_intr_assert(); + channel0_intr_enable(1); + enable_channel0(1); + } + if (VPIF_CHANNEL1_VIDEO == ch->channel_id || + ycmux_mode == 2) { + channel1_intr_assert(); + channel1_intr_enable(1); + enable_channel1(1); + } + + return 0; + +err: + spin_lock_irqsave(&common->irqlock, flags); + list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); + } + spin_unlock_irqrestore(&common->irqlock, flags); + + return ret; +} + +/** + * vpif_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 vpif_stop_streaming(struct vb2_queue *vq) +{ + struct channel_obj *ch = vb2_get_drv_priv(vq); + struct common_obj *common; + unsigned long flags; + int ret; + + common = &ch->common[VPIF_VIDEO_INDEX]; + + /* Disable channel as per its device type and channel id */ + if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { + enable_channel0(0); + channel0_intr_enable(0); + } + if (VPIF_CHANNEL1_VIDEO == ch->channel_id || + ycmux_mode == 2) { + enable_channel1(0); + channel1_intr_enable(0); + } + + ycmux_mode = 0; + + ret = v4l2_subdev_call(ch->sd, video, s_stream, 0); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) + vpif_dbg(1, debug, "stream off failed in subdev\n"); + + /* release all active buffers */ + if (common->cur_frm == common->next_frm) { + vb2_buffer_done(&common->cur_frm->vb.vb2_buf, + VB2_BUF_STATE_ERROR); + } else { + if (common->cur_frm) + vb2_buffer_done(&common->cur_frm->vb.vb2_buf, + VB2_BUF_STATE_ERROR); + if (common->next_frm) + vb2_buffer_done(&common->next_frm->vb.vb2_buf, + VB2_BUF_STATE_ERROR); + } + + spin_lock_irqsave(&common->irqlock, flags); + while (!list_empty(&common->dma_queue)) { + common->next_frm = list_entry(common->dma_queue.next, + struct vpif_cap_buffer, list); + list_del(&common->next_frm->list); + vb2_buffer_done(&common->next_frm->vb.vb2_buf, + VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&common->irqlock, flags); +} + +static const struct vb2_ops video_qops = { + .queue_setup = vpif_buffer_queue_setup, + .buf_prepare = vpif_buffer_prepare, + .start_streaming = vpif_start_streaming, + .stop_streaming = vpif_stop_streaming, + .buf_queue = vpif_buffer_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +/** + * vpif_process_buffer_complete: process a completed buffer + * @common: ptr to common channel object + * + * 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 void vpif_process_buffer_complete(struct common_obj *common) +{ + common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); + vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE); + /* Make curFrm pointing to nextFrm */ + common->cur_frm = common->next_frm; +} + +/** + * vpif_schedule_next_buffer: set next buffer address for capture + * @common : ptr to common channel object + * + * This function will get next buffer from the dma queue and + * set the buffer address in the vpif register for capture. + * the buffer is marked active + */ +static void vpif_schedule_next_buffer(struct common_obj *common) +{ + unsigned long addr = 0; + + spin_lock(&common->irqlock); + common->next_frm = list_entry(common->dma_queue.next, + struct vpif_cap_buffer, list); + /* Remove that buffer from the buffer queue */ + list_del(&common->next_frm->list); + spin_unlock(&common->irqlock); + addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0); + + /* Set top and bottom field addresses in VPIF registers */ + common->set_addr(addr + common->ytop_off, + addr + common->ybtm_off, + addr + common->ctop_off, + addr + common->cbtm_off); +} + +/** + * vpif_channel_isr : ISR handler for vpif capture + * @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 VPIF registers + */ +static irqreturn_t vpif_channel_isr(int irq, void *dev_id) +{ + struct vpif_device *dev = &vpif_obj; + struct common_obj *common; + struct channel_obj *ch; + int channel_id; + int fid = -1, i; + + channel_id = *(int *)(dev_id); + if (!vpif_intr_status(channel_id)) + return IRQ_NONE; + + ch = dev->dev[channel_id]; + + for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) { + common = &ch->common[i]; + /* skip If streaming is not started in this channel */ + /* Check the field format */ + if (1 == ch->vpifparams.std_info.frm_fmt || + common->fmt.fmt.pix.field == V4L2_FIELD_NONE) { + /* Progressive mode */ + spin_lock(&common->irqlock); + if (list_empty(&common->dma_queue)) { + spin_unlock(&common->irqlock); + continue; + } + spin_unlock(&common->irqlock); + + if (!channel_first_int[i][channel_id]) + vpif_process_buffer_complete(common); + + channel_first_int[i][channel_id] = 0; + + vpif_schedule_next_buffer(common); + + + channel_first_int[i][channel_id] = 0; + } else { + /** + * Interlaced mode. If it is first interrupt, ignore + * it + */ + if (channel_first_int[i][channel_id]) { + channel_first_int[i][channel_id] = 0; + continue; + } + if (0 == i) { + ch->field_id ^= 1; + /* Get field id from VPIF registers */ + fid = vpif_channel_getfid(ch->channel_id); + if (fid != ch->field_id) { + /** + * If field id does not match stored + * field id, make them in sync + */ + if (0 == fid) + ch->field_id = fid; + return IRQ_HANDLED; + } + } + /* device field id and local field id are in sync */ + if (0 == fid) { + /* this is even field */ + if (common->cur_frm == common->next_frm) + continue; + + /* mark the current buffer as done */ + vpif_process_buffer_complete(common); + } else if (1 == fid) { + /* odd field */ + spin_lock(&common->irqlock); + if (list_empty(&common->dma_queue) || + (common->cur_frm != common->next_frm)) { + spin_unlock(&common->irqlock); + continue; + } + spin_unlock(&common->irqlock); + + vpif_schedule_next_buffer(common); + } + } + } + return IRQ_HANDLED; +} + +/** + * vpif_update_std_info() - update standard related info + * @ch: ptr to channel object + * + * For a given standard selected by application, update values + * in the device data structures + */ +static int vpif_update_std_info(struct channel_obj *ch) +{ + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct vpif_params *vpifparams = &ch->vpifparams; + const struct vpif_channel_config_params *config; + struct vpif_channel_config_params *std_info = &vpifparams->std_info; + struct video_obj *vid_ch = &ch->video; + int index; + struct v4l2_pix_format *pixfmt = &common->fmt.fmt.pix; + + vpif_dbg(2, debug, "vpif_update_std_info\n"); + + /* + * if called after try_fmt or g_fmt, there will already be a size + * so use that by default. + */ + if (pixfmt->width && pixfmt->height) { + if (pixfmt->field == V4L2_FIELD_ANY || + pixfmt->field == V4L2_FIELD_NONE) + pixfmt->field = V4L2_FIELD_NONE; + + vpifparams->iface.if_type = VPIF_IF_BT656; + if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10 || + pixfmt->pixelformat == V4L2_PIX_FMT_SBGGR8) + vpifparams->iface.if_type = VPIF_IF_RAW_BAYER; + + if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) + vpifparams->params.data_sz = 1; /* 10 bits/pixel. */ + + /* + * For raw formats from camera sensors, we don't need + * the std_info from table lookup, so nothing else to do here. + */ + if (vpifparams->iface.if_type == VPIF_IF_RAW_BAYER) { + memset(std_info, 0, sizeof(struct vpif_channel_config_params)); + vpifparams->std_info.capture_format = 1; /* CCD/raw mode */ + return 0; + } + } + + for (index = 0; index < vpif_ch_params_count; index++) { + config = &vpif_ch_params[index]; + if (config->hd_sd == 0) { + vpif_dbg(2, debug, "SD format\n"); + if (config->stdid & vid_ch->stdid) { + memcpy(std_info, config, sizeof(*config)); + break; + } + } else { + vpif_dbg(2, debug, "HD format\n"); + if (!memcmp(&config->dv_timings, &vid_ch->dv_timings, + sizeof(vid_ch->dv_timings))) { + memcpy(std_info, config, sizeof(*config)); + break; + } + } + } + + /* standard not found */ + if (index == vpif_ch_params_count) + return -EINVAL; + + common->fmt.fmt.pix.width = std_info->width; + common->width = std_info->width; + common->fmt.fmt.pix.height = std_info->height; + common->height = std_info->height; + common->fmt.fmt.pix.sizeimage = common->height * common->width * 2; + common->fmt.fmt.pix.bytesperline = std_info->width; + vpifparams->video_params.hpitch = std_info->width; + vpifparams->video_params.storage_mode = std_info->frm_fmt; + + if (vid_ch->stdid) + common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + else + common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709; + + if (ch->vpifparams.std_info.frm_fmt) + common->fmt.fmt.pix.field = V4L2_FIELD_NONE; + else + common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED; + + if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) + common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; + else + common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16; + + common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + return 0; +} + +/** + * vpif_calculate_offsets : This function calculates buffers offsets + * @ch : ptr to channel object + * + * This function calculates buffer offsets for Y and C in the top and + * bottom field + */ +static void vpif_calculate_offsets(struct channel_obj *ch) +{ + unsigned int hpitch, sizeimage; + struct video_obj *vid_ch = &(ch->video); + struct vpif_params *vpifparams = &ch->vpifparams; + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + enum v4l2_field field = common->fmt.fmt.pix.field; + + vpif_dbg(2, debug, "vpif_calculate_offsets\n"); + + if (V4L2_FIELD_ANY == field) { + if (vpifparams->std_info.frm_fmt) + vid_ch->buf_field = V4L2_FIELD_NONE; + else + vid_ch->buf_field = V4L2_FIELD_INTERLACED; + } else + vid_ch->buf_field = common->fmt.fmt.pix.field; + + sizeimage = common->fmt.fmt.pix.sizeimage; + + hpitch = common->fmt.fmt.pix.bytesperline; + + if ((V4L2_FIELD_NONE == vid_ch->buf_field) || + (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { + /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ + common->ytop_off = 0; + common->ybtm_off = hpitch; + common->ctop_off = sizeimage / 2; + common->cbtm_off = sizeimage / 2 + hpitch; + } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { + /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ + common->ytop_off = 0; + common->ybtm_off = sizeimage / 4; + common->ctop_off = sizeimage / 2; + common->cbtm_off = common->ctop_off + sizeimage / 4; + } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { + /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ + common->ybtm_off = 0; + common->ytop_off = sizeimage / 4; + common->cbtm_off = sizeimage / 2; + common->ctop_off = common->cbtm_off + sizeimage / 4; + } + if ((V4L2_FIELD_NONE == vid_ch->buf_field) || + (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) + vpifparams->video_params.storage_mode = 1; + else + vpifparams->video_params.storage_mode = 0; + + if (1 == vpifparams->std_info.frm_fmt) + vpifparams->video_params.hpitch = + common->fmt.fmt.pix.bytesperline; + else { + if ((field == V4L2_FIELD_ANY) + || (field == V4L2_FIELD_INTERLACED)) + vpifparams->video_params.hpitch = + common->fmt.fmt.pix.bytesperline * 2; + else + vpifparams->video_params.hpitch = + common->fmt.fmt.pix.bytesperline; + } + + ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid; +} + +/** + * vpif_config_addr() - function to configure buffer address in vpif + * @ch: channel ptr + * @muxmode: channel mux mode + */ +static void vpif_config_addr(struct channel_obj *ch, int muxmode) +{ + struct common_obj *common; + + vpif_dbg(2, debug, "vpif_config_addr\n"); + + common = &(ch->common[VPIF_VIDEO_INDEX]); + + if (VPIF_CHANNEL1_VIDEO == ch->channel_id) + common->set_addr = ch1_set_videobuf_addr; + else if (2 == muxmode) + common->set_addr = ch0_set_videobuf_addr_yc_nmux; + else + common->set_addr = ch0_set_videobuf_addr; +} + +/** + * vpif_input_to_subdev() - Maps input to sub device + * @vpif_cfg: global config ptr + * @chan_cfg: channel config ptr + * @input_index: Given input index from application + * + * lookup the sub device information for a given input index. + * we report all the inputs to application. inputs table also + * has sub device name for the each input + */ +static int vpif_input_to_subdev( + struct vpif_capture_config *vpif_cfg, + struct vpif_capture_chan_config *chan_cfg, + int input_index) +{ + struct vpif_subdev_info *subdev_info; + const char *subdev_name; + int i; + + vpif_dbg(2, debug, "vpif_input_to_subdev\n"); + + if (!chan_cfg) + return -1; + if (input_index >= chan_cfg->input_count) + return -1; + subdev_name = chan_cfg->inputs[input_index].subdev_name; + if (!subdev_name) + return -1; + + /* loop through the sub device list to get the sub device info */ + for (i = 0; i < vpif_cfg->subdev_count; i++) { + subdev_info = &vpif_cfg->subdev_info[i]; + if (subdev_info && !strcmp(subdev_info->name, subdev_name)) + return i; + } + return -1; +} + +/** + * vpif_set_input() - Select an input + * @vpif_cfg: global config ptr + * @ch: channel + * @index: Given input index from application + * + * Select the given input. + */ +static int vpif_set_input( + struct vpif_capture_config *vpif_cfg, + struct channel_obj *ch, + int index) +{ + struct vpif_capture_chan_config *chan_cfg = + &vpif_cfg->chan_config[ch->channel_id]; + struct vpif_subdev_info *subdev_info = NULL; + struct v4l2_subdev *sd = NULL; + u32 input = 0, output = 0; + int sd_index; + int ret; + + sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index); + if (sd_index >= 0) { + sd = vpif_obj.sd[sd_index]; + subdev_info = &vpif_cfg->subdev_info[sd_index]; + } else { + /* no subdevice, no input to setup */ + return 0; + } + + /* first setup input path from sub device to vpif */ + if (sd && vpif_cfg->setup_input_path) { + ret = vpif_cfg->setup_input_path(ch->channel_id, + subdev_info->name); + if (ret < 0) { + vpif_dbg(1, debug, "couldn't setup input path for the" \ + " sub device %s, for input index %d\n", + subdev_info->name, index); + return ret; + } + } + + if (sd) { + input = chan_cfg->inputs[index].input_route; + output = chan_cfg->inputs[index].output_route; + ret = v4l2_subdev_call(sd, video, s_routing, + input, output, 0); + if (ret < 0 && ret != -ENOIOCTLCMD) { + vpif_dbg(1, debug, "Failed to set input\n"); + return ret; + } + } + ch->input_idx = index; + ch->sd = sd; + /* copy interface parameters to vpif */ + ch->vpifparams.iface = chan_cfg->vpif_if; + + /* update tvnorms from the sub device input info */ + ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std; + return 0; +} + +/** + * vpif_querystd() - querystd handler + * @file: file ptr + * @priv: file handle + * @std_id: ptr to std id + * + * This function is called to detect standard at the selected input + */ +static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + int ret; + + vpif_dbg(2, debug, "vpif_querystd\n"); + + /* Call querystd function of decoder device */ + ret = v4l2_subdev_call(ch->sd, video, querystd, std_id); + + if (ret == -ENOIOCTLCMD || ret == -ENODEV) + return -ENODATA; + if (ret) { + vpif_dbg(1, debug, "Failed to query standard for sub devices\n"); + return ret; + } + + return 0; +} + +/** + * vpif_g_std() - get STD handler + * @file: file ptr + * @priv: file handle + * @std: ptr to std id + */ +static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + + vpif_dbg(2, debug, "vpif_g_std\n"); + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_STD) + return -ENODATA; + + *std = ch->video.stdid; + return 0; +} + +/** + * vpif_s_std() - set STD handler + * @file: file ptr + * @priv: file handle + * @std_id: ptr to std id + */ +static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + int ret; + + vpif_dbg(2, debug, "vpif_s_std\n"); + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_STD) + return -ENODATA; + + if (vb2_is_busy(&common->buffer_queue)) + return -EBUSY; + + /* Call encoder subdevice function to set the standard */ + ch->video.stdid = std_id; + memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings)); + + /* Get the information about the standard */ + if (vpif_update_std_info(ch)) { + vpif_err("Error getting the standard info\n"); + return -EINVAL; + } + + /* set standard in the sub device */ + ret = v4l2_subdev_call(ch->sd, video, s_std, std_id); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { + vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); + return ret; + } + return 0; +} + +/** + * vpif_enum_input() - ENUMINPUT handler + * @file: file ptr + * @priv: file handle + * @input: ptr to input structure + */ +static int vpif_enum_input(struct file *file, void *priv, + struct v4l2_input *input) +{ + + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct vpif_capture_chan_config *chan_cfg; + + chan_cfg = &config->chan_config[ch->channel_id]; + + if (input->index >= chan_cfg->input_count) + return -EINVAL; + + memcpy(input, &chan_cfg->inputs[input->index].input, + sizeof(*input)); + return 0; +} + +/** + * vpif_g_input() - Get INPUT handler + * @file: file ptr + * @priv: file handle + * @index: ptr to input index + */ +static int vpif_g_input(struct file *file, void *priv, unsigned int *index) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + + *index = ch->input_idx; + return 0; +} + +/** + * vpif_s_input() - Set INPUT handler + * @file: file ptr + * @priv: file handle + * @index: input index + */ +static int vpif_s_input(struct file *file, void *priv, unsigned int index) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct vpif_capture_chan_config *chan_cfg; + + chan_cfg = &config->chan_config[ch->channel_id]; + + if (index >= chan_cfg->input_count) + return -EINVAL; + + if (vb2_is_busy(&common->buffer_queue)) + return -EBUSY; + + return vpif_set_input(config, ch, index); +} + +/** + * vpif_enum_fmt_vid_cap() - ENUM_FMT handler + * @file: file ptr + * @priv: file handle + * @fmt: ptr to V4L2 format descriptor + */ +static int vpif_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *fmt) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + + if (fmt->index != 0) { + vpif_dbg(1, debug, "Invalid format index\n"); + return -EINVAL; + } + + /* Fill in the information about format */ + if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) + fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; + else + fmt->pixelformat = V4L2_PIX_FMT_NV16; + return 0; +} + +/** + * vpif_try_fmt_vid_cap() - TRY_FMT handler + * @file: file ptr + * @priv: file handle + * @fmt: ptr to v4l2 format structure + */ +static int vpif_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; + struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); + + common->fmt = *fmt; + vpif_update_std_info(ch); + + pixfmt->field = common->fmt.fmt.pix.field; + pixfmt->colorspace = common->fmt.fmt.pix.colorspace; + pixfmt->bytesperline = common->fmt.fmt.pix.width; + pixfmt->width = common->fmt.fmt.pix.width; + pixfmt->height = common->fmt.fmt.pix.height; + pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2; + if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) { + pixfmt->bytesperline = common->fmt.fmt.pix.width * 2; + pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; + } + + dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__, + pixfmt->width, pixfmt->height, + pixfmt->bytesperline, pixfmt->pixelformat, + pixfmt->field, pixfmt->sizeimage); + + return 0; +} + + +/** + * vpif_g_fmt_vid_cap() - Set INPUT handler + * @file: file ptr + * @priv: file handle + * @fmt: ptr to v4l2 format structure + */ +static int vpif_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix; + struct v4l2_subdev_format format = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + struct v4l2_mbus_framefmt *mbus_fmt = &format.format; + int ret; + + /* Check the validity of the buffer type */ + if (common->fmt.type != fmt->type) + return -EINVAL; + + /* By default, use currently set fmt */ + *fmt = common->fmt; + + /* If subdev has get_fmt, use that to override */ + ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format); + if (!ret && mbus_fmt->code) { + v4l2_fill_pix_format(pix_fmt, mbus_fmt); + pix_fmt->bytesperline = pix_fmt->width; + if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) { + /* e.g. mt9v032 */ + pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10; + pix_fmt->bytesperline = pix_fmt->width * 2; + } else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) { + /* e.g. tvp514x */ + pix_fmt->pixelformat = V4L2_PIX_FMT_NV16; + pix_fmt->bytesperline = pix_fmt->width * 2; + } else { + dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n", + __func__, mbus_fmt->code); + } + pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height; + dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__, + pix_fmt->width, pix_fmt->height, + pix_fmt->bytesperline, pix_fmt->pixelformat, + mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage); + + common->fmt = *fmt; + vpif_update_std_info(ch); + } + + return 0; +} + +/** + * vpif_s_fmt_vid_cap() - Set FMT handler + * @file: file ptr + * @priv: file handle + * @fmt: ptr to v4l2 format structure + */ +static int vpif_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + int ret; + + vpif_dbg(2, debug, "%s\n", __func__); + + if (vb2_is_busy(&common->buffer_queue)) + return -EBUSY; + + ret = vpif_try_fmt_vid_cap(file, priv, fmt); + if (ret) + return ret; + + /* store the format in the channel object */ + common->fmt = *fmt; + return 0; +} + +/** + * vpif_querycap() - QUERYCAP handler + * @file: file ptr + * @priv: file handle + * @cap: ptr to v4l2_capability structure + */ +static int vpif_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + + strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(vpif_dev)); + strscpy(cap->card, config->card_name, sizeof(cap->card)); + + return 0; +} + +/** + * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler + * @file: file ptr + * @priv: file handle + * @timings: input timings + */ +static int +vpif_enum_dv_timings(struct file *file, void *priv, + struct v4l2_enum_dv_timings *timings) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + int ret; + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS) + return -ENODATA; + + timings->pad = 0; + + ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings); + if (ret == -ENOIOCTLCMD || ret == -ENODEV) + return -EINVAL; + + return ret; +} + +/** + * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler + * @file: file ptr + * @priv: file handle + * @timings: input timings + */ +static int +vpif_query_dv_timings(struct file *file, void *priv, + struct v4l2_dv_timings *timings) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + int ret; + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS) + return -ENODATA; + + ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings); + if (ret == -ENOIOCTLCMD || ret == -ENODEV) + return -ENODATA; + + return ret; +} + +/** + * vpif_s_dv_timings() - S_DV_TIMINGS handler + * @file: file ptr + * @priv: file handle + * @timings: digital video timings + */ +static int vpif_s_dv_timings(struct file *file, void *priv, + struct v4l2_dv_timings *timings) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct vpif_params *vpifparams = &ch->vpifparams; + struct vpif_channel_config_params *std_info = &vpifparams->std_info; + struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + struct video_obj *vid_ch = &ch->video; + struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt; + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + int ret; + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS) + return -ENODATA; + + if (timings->type != V4L2_DV_BT_656_1120) { + vpif_dbg(2, debug, "Timing type not defined\n"); + return -EINVAL; + } + + if (vb2_is_busy(&common->buffer_queue)) + return -EBUSY; + + /* Configure subdevice timings, if any */ + ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings); + if (ret == -ENOIOCTLCMD || ret == -ENODEV) + ret = 0; + if (ret < 0) { + vpif_dbg(2, debug, "Error setting custom DV timings\n"); + return ret; + } + + if (!(timings->bt.width && timings->bt.height && + (timings->bt.hbackporch || + timings->bt.hfrontporch || + timings->bt.hsync) && + timings->bt.vfrontporch && + (timings->bt.vbackporch || + timings->bt.vsync))) { + vpif_dbg(2, debug, "Timings for width, height, horizontal back porch, horizontal sync, horizontal front porch, vertical back porch, vertical sync and vertical back porch must be defined\n"); + return -EINVAL; + } + + vid_ch->dv_timings = *timings; + + /* Configure video port timings */ + + std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8; + std_info->sav2eav = bt->width; + + std_info->l1 = 1; + std_info->l3 = bt->vsync + bt->vbackporch + 1; + + std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); + if (bt->interlaced) { + if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { + std_info->l5 = std_info->vsize/2 - + (bt->vfrontporch - 1); + std_info->l7 = std_info->vsize/2 + 1; + std_info->l9 = std_info->l7 + bt->il_vsync + + bt->il_vbackporch + 1; + std_info->l11 = std_info->vsize - + (bt->il_vfrontporch - 1); + } else { + vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n"); + return -EINVAL; + } + } else { + std_info->l5 = std_info->vsize - (bt->vfrontporch - 1); + } + strscpy(std_info->name, "Custom timings BT656/1120", + sizeof(std_info->name)); + std_info->width = bt->width; + std_info->height = bt->height; + std_info->frm_fmt = bt->interlaced ? 0 : 1; + std_info->ycmux_mode = 0; + std_info->capture_format = 0; + std_info->vbi_supported = 0; + std_info->hd_sd = 1; + std_info->stdid = 0; + + vid_ch->stdid = 0; + return 0; +} + +/** + * vpif_g_dv_timings() - G_DV_TIMINGS handler + * @file: file ptr + * @priv: file handle + * @timings: digital video timings + */ +static int vpif_g_dv_timings(struct file *file, void *priv, + struct v4l2_dv_timings *timings) +{ + struct vpif_capture_config *config = vpif_dev->platform_data; + struct video_device *vdev = video_devdata(file); + struct channel_obj *ch = video_get_drvdata(vdev); + struct video_obj *vid_ch = &ch->video; + struct vpif_capture_chan_config *chan_cfg; + struct v4l2_input input; + + if (!config->chan_config[ch->channel_id].inputs) + return -ENODATA; + + chan_cfg = &config->chan_config[ch->channel_id]; + input = chan_cfg->inputs[ch->input_idx].input; + if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS) + return -ENODATA; + + *timings = vid_ch->dv_timings; + + return 0; +} + +/* + * vpif_log_status() - Status information + * @file: file ptr + * @priv: file handle + * + * Returns zero. + */ +static int vpif_log_status(struct file *filep, void *priv) +{ + /* status for sub devices */ + v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status); + + return 0; +} + +/* vpif capture ioctl operations */ +static const struct v4l2_ioctl_ops vpif_ioctl_ops = { + .vidioc_querycap = vpif_querycap, + .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap, + + .vidioc_enum_input = vpif_enum_input, + .vidioc_s_input = vpif_s_input, + .vidioc_g_input = vpif_g_input, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .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_querystd = vpif_querystd, + .vidioc_s_std = vpif_s_std, + .vidioc_g_std = vpif_g_std, + + .vidioc_enum_dv_timings = vpif_enum_dv_timings, + .vidioc_query_dv_timings = vpif_query_dv_timings, + .vidioc_s_dv_timings = vpif_s_dv_timings, + .vidioc_g_dv_timings = vpif_g_dv_timings, + + .vidioc_log_status = vpif_log_status, +}; + +/* vpif file operations */ +static const struct v4l2_file_operations vpif_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll +}; + +/** + * initialize_vpif() - Initialize vpif data structures + * + * Allocate memory for data structures and initialize them + */ +static int initialize_vpif(void) +{ + int err, i, j; + int free_channel_objects_index; + + /* Allocate memory for six channel objects */ + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + vpif_obj.dev[i] = + kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL); + /* If memory allocation fails, return error */ + if (!vpif_obj.dev[i]) { + free_channel_objects_index = i; + err = -ENOMEM; + goto vpif_init_free_channel_objects; + } + } + return 0; + +vpif_init_free_channel_objects: + for (j = 0; j < free_channel_objects_index; j++) + kfree(vpif_obj.dev[j]); + return err; +} + +static inline void free_vpif_objs(void) +{ + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) + kfree(vpif_obj.dev[i]); +} + +static int vpif_async_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *subdev, + struct v4l2_async_subdev *asd) +{ + int i; + + for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) { + struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i]; + const struct fwnode_handle *fwnode = _asd->match.fwnode; + + if (fwnode == subdev->fwnode) { + vpif_obj.sd[i] = subdev; + vpif_obj.config->chan_config->inputs[i].subdev_name = + (char *)to_of_node(subdev->fwnode)->full_name; + vpif_dbg(2, debug, + "%s: setting input %d subdev_name = %s\n", + __func__, i, + vpif_obj.config->chan_config->inputs[i].subdev_name); + return 0; + } + } + + for (i = 0; i < vpif_obj.config->subdev_count; i++) + if (!strcmp(vpif_obj.config->subdev_info[i].name, + subdev->name)) { + vpif_obj.sd[i] = subdev; + return 0; + } + + return -EINVAL; +} + +static int vpif_probe_complete(void) +{ + struct common_obj *common; + struct video_device *vdev; + struct channel_obj *ch; + struct vb2_queue *q; + int j, err, k; + + for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { + ch = vpif_obj.dev[j]; + ch->channel_id = j; + common = &(ch->common[VPIF_VIDEO_INDEX]); + spin_lock_init(&common->irqlock); + mutex_init(&common->lock); + + /* select input 0 */ + err = vpif_set_input(vpif_obj.config, ch, 0); + if (err) + goto probe_out; + + /* set initial format */ + ch->video.stdid = V4L2_STD_525_60; + memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings)); + common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vpif_update_std_info(ch); + + /* Initialize vb2 queue */ + q = &common->buffer_queue; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + q->drv_priv = ch; + q->ops = &video_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct vpif_cap_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 1; + q->lock = &common->lock; + q->dev = vpif_dev; + + err = vb2_queue_init(q); + if (err) { + vpif_err("vpif_capture: vb2_queue_init() failed\n"); + goto probe_out; + } + + INIT_LIST_HEAD(&common->dma_queue); + + /* Initialize the video_device structure */ + vdev = &ch->video_dev; + strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name)); + vdev->release = video_device_release_empty; + vdev->fops = &vpif_fops; + vdev->ioctl_ops = &vpif_ioctl_ops; + vdev->v4l2_dev = &vpif_obj.v4l2_dev; + vdev->vfl_dir = VFL_DIR_RX; + vdev->queue = q; + vdev->lock = &common->lock; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; + video_set_drvdata(&ch->video_dev, ch); + err = video_register_device(vdev, + VFL_TYPE_VIDEO, (j ? 1 : 0)); + if (err) + goto probe_out; + } + + v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n"); + return 0; + +probe_out: + for (k = 0; k < j; k++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[k]; + /* Unregister video device */ + video_unregister_device(&ch->video_dev); + } + + return err; +} + +static int vpif_async_complete(struct v4l2_async_notifier *notifier) +{ + return vpif_probe_complete(); +} + +static const struct v4l2_async_notifier_operations vpif_async_ops = { + .bound = vpif_async_bound, + .complete = vpif_async_complete, +}; + +static struct vpif_capture_config * +vpif_capture_get_pdata(struct platform_device *pdev) +{ + struct device_node *endpoint = NULL; + struct device_node *rem = NULL; + struct vpif_capture_config *pdata; + struct vpif_subdev_info *sdinfo; + struct vpif_capture_chan_config *chan; + unsigned int i; + + v4l2_async_nf_init(&vpif_obj.notifier); + + /* + * DT boot: OF node from parent device contains + * video ports & endpoints data. + */ + if (pdev->dev.parent && pdev->dev.parent->of_node) + pdev->dev.of_node = pdev->dev.parent->of_node; + if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) + return pdev->dev.platform_data; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + pdata->subdev_info = + devm_kcalloc(&pdev->dev, + VPIF_CAPTURE_NUM_CHANNELS, + sizeof(*pdata->subdev_info), + GFP_KERNEL); + + if (!pdata->subdev_info) + return NULL; + + for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) { + struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; + unsigned int flags; + int err; + + endpoint = of_graph_get_next_endpoint(pdev->dev.of_node, + endpoint); + if (!endpoint) + break; + + rem = of_graph_get_remote_port_parent(endpoint); + if (!rem) { + dev_dbg(&pdev->dev, "Remote device at %pOF not found\n", + endpoint); + goto done; + } + + sdinfo = &pdata->subdev_info[i]; + chan = &pdata->chan_config[i]; + chan->inputs = devm_kcalloc(&pdev->dev, + VPIF_CAPTURE_NUM_CHANNELS, + sizeof(*chan->inputs), + GFP_KERNEL); + if (!chan->inputs) + goto err_cleanup; + + chan->input_count++; + chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA; + chan->inputs[i].input.std = V4L2_STD_ALL; + chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD; + + err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), + &bus_cfg); + if (err) { + dev_err(&pdev->dev, "Could not parse the endpoint\n"); + of_node_put(rem); + goto done; + } + + dev_dbg(&pdev->dev, "Endpoint %pOF, bus_width = %d\n", + endpoint, bus_cfg.bus.parallel.bus_width); + + flags = bus_cfg.bus.parallel.flags; + + if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) + chan->vpif_if.hd_pol = 1; + + if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) + chan->vpif_if.vd_pol = 1; + + dev_dbg(&pdev->dev, "Remote device %pOF found\n", rem); + sdinfo->name = rem->full_name; + + pdata->asd[i] = v4l2_async_nf_add_fwnode(&vpif_obj.notifier, + of_fwnode_handle(rem), + struct + v4l2_async_subdev); + if (IS_ERR(pdata->asd[i])) + goto err_cleanup; + + of_node_put(rem); + } + +done: + of_node_put(endpoint); + pdata->asd_sizes[0] = i; + pdata->subdev_count = i; + pdata->card_name = "DA850/OMAP-L138 Video Capture"; + + return pdata; + +err_cleanup: + of_node_put(rem); + of_node_put(endpoint); + v4l2_async_nf_cleanup(&vpif_obj.notifier); + + return NULL; +} + +/** + * vpif_probe : This function probes the vpif capture driver + * @pdev: platform device pointer + * + * This creates device entries by register itself to the V4L2 driver and + * initializes fields of each channel objects + */ +static __init int vpif_probe(struct platform_device *pdev) +{ + struct vpif_subdev_info *subdevdata; + struct i2c_adapter *i2c_adap; + int subdev_count; + int res_idx = 0; + int i, err; + + pdev->dev.platform_data = vpif_capture_get_pdata(pdev); + if (!pdev->dev.platform_data) { + dev_warn(&pdev->dev, "Missing platform data. Giving up.\n"); + return -EINVAL; + } + + vpif_dev = &pdev->dev; + + err = initialize_vpif(); + if (err) { + v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); + goto cleanup; + } + + err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); + if (err) { + v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); + goto vpif_free; + } + + do { + int irq; + + err = platform_get_irq_optional(pdev, res_idx); + if (err < 0 && err != -ENXIO) + goto vpif_unregister; + if (err > 0) + irq = err; + else + break; + + err = devm_request_irq(&pdev->dev, irq, vpif_channel_isr, + IRQF_SHARED, VPIF_DRIVER_NAME, + (void *)(&vpif_obj.dev[res_idx]->channel_id)); + if (err) + goto vpif_unregister; + } while (++res_idx); + + vpif_obj.config = pdev->dev.platform_data; + + subdev_count = vpif_obj.config->subdev_count; + vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL); + if (!vpif_obj.sd) { + err = -ENOMEM; + goto vpif_unregister; + } + + if (!vpif_obj.config->asd_sizes[0]) { + int i2c_id = vpif_obj.config->i2c_adapter_id; + + i2c_adap = i2c_get_adapter(i2c_id); + WARN_ON(!i2c_adap); + for (i = 0; i < subdev_count; i++) { + subdevdata = &vpif_obj.config->subdev_info[i]; + vpif_obj.sd[i] = + v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, + i2c_adap, + &subdevdata-> + board_info, + NULL); + + if (!vpif_obj.sd[i]) { + vpif_err("Error registering v4l2 subdevice\n"); + err = -ENODEV; + goto probe_subdev_out; + } + v4l2_info(&vpif_obj.v4l2_dev, + "registered sub device %s\n", + subdevdata->name); + } + err = vpif_probe_complete(); + if (err) + goto probe_subdev_out; + } else { + vpif_obj.notifier.ops = &vpif_async_ops; + err = v4l2_async_nf_register(&vpif_obj.v4l2_dev, + &vpif_obj.notifier); + if (err) { + vpif_err("Error registering async notifier\n"); + err = -EINVAL; + goto probe_subdev_out; + } + } + + return 0; + +probe_subdev_out: + /* free sub devices memory */ + kfree(vpif_obj.sd); +vpif_unregister: + v4l2_device_unregister(&vpif_obj.v4l2_dev); +vpif_free: + free_vpif_objs(); +cleanup: + v4l2_async_nf_cleanup(&vpif_obj.notifier); + + return err; +} + +/** + * vpif_remove() - driver remove handler + * @device: ptr to platform device structure + * + * The vidoe device is unregistered + */ +static int vpif_remove(struct platform_device *device) +{ + struct channel_obj *ch; + int i; + + v4l2_async_nf_unregister(&vpif_obj.notifier); + v4l2_async_nf_cleanup(&vpif_obj.notifier); + v4l2_device_unregister(&vpif_obj.v4l2_dev); + + kfree(vpif_obj.sd); + /* un-register device */ + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + /* Unregister video device */ + video_unregister_device(&ch->video_dev); + kfree(vpif_obj.dev[i]); + } + return 0; +} + +#ifdef CONFIG_PM_SLEEP +/** + * vpif_suspend: vpif device suspend + * @dev: pointer to &struct device + */ +static int vpif_suspend(struct device *dev) +{ + + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + + if (!vb2_start_streaming_called(&common->buffer_queue)) + continue; + + mutex_lock(&common->lock); + /* Disable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(0); + channel0_intr_enable(0); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + ycmux_mode == 2) { + enable_channel1(0); + channel1_intr_enable(0); + } + mutex_unlock(&common->lock); + } + + return 0; +} + +/* + * vpif_resume: vpif device suspend + */ +static int vpif_resume(struct device *dev) +{ + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + + if (!vb2_start_streaming_called(&common->buffer_queue)) + continue; + + mutex_lock(&common->lock); + /* Enable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(1); + channel0_intr_enable(1); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + ycmux_mode == 2) { + enable_channel1(1); + channel1_intr_enable(1); + } + mutex_unlock(&common->lock); + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume); + +static __refdata struct platform_driver vpif_driver = { + .driver = { + .name = VPIF_DRIVER_NAME, + .pm = &vpif_pm_ops, + }, + .probe = vpif_probe, + .remove = vpif_remove, +}; + +module_platform_driver(vpif_driver); |