linux-yocto - Yocto Linux Embedded kernel

Age	Commit message (Expand)	Author
2021-07-20	ocfs2: fix snprintf() checking	Dan Carpenter
2019-12-01	ocfs2: remove ocfs2_is_o2cb_active()	Gang He
2017-07-06	ocfs2: constify attribute_group structures	Arvind Yadav
2017-01-10	ocfs2: fix crash caused by stale lvb with fsdlm plugin	Eric Ren
2016-07-26	ocfs2: fix a redundant re-initialization	Eric Ren
2016-03-22	ocfs2: export ocfs2_kset for online file check	Gang He
2014-06-04	ocfs2: remove NULL assignments on static	Fabian Frederick
2014-04-06	Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kern...	Linus Torvalds
2014-04-03	ocfs2: add dlm_recover_callback_support in sysfs	Goldwyn Rodrigues
2014-03-28	ocfs2: check if cluster name exists before deref	Sasha Levin
2014-03-24	VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.	Rusty Russell
2014-01-21	ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node	Goldwyn Rodrigues
2014-01-21	ocfs2: add clustername to cluster connection	Goldwyn Rodrigues
2013-11-13	ocfs2: convert use of typedef ctl_table to struct ctl_table	Joe Perches
2010-02-26	ocfs2_dlmfs: Enable the use of user cluster stacks.	Joel Becker
2010-02-26	ocfs2: Pass the locking protocol into ocfs2_cluster_connect().	Joel Becker
2010-02-26	ocfs2: Remove the ast pointers from ocfs2_stack_plugins	Joel Becker
2010-02-26	ocfs2: Hang the locking proto on the cluster conn and use it in asts.	Joel Becker
2010-02-26	ocfs2: Attach the connection to the lksb	Joel Becker
2010-02-26	ocfs2: Pass lksbs back from stackglue ast/bast functions.	Joel Becker
2009-11-18	sysctl: Drop & in front of every proc_handler.	Eric W. Biederman
2009-11-12	sysctl fs: Remove dead binary sysctl support	Eric W. Biederman
2009-06-22	ocfs2: Provide the ocfs2_dlm_lvb_valid() stack API.	Joel Becker
2008-10-13	ocfs2: Remove pointless !!	Mark Fasheh
2008-10-13	ocfs2: POSIX file locks support	Mark Fasheh
2008-08-25	ocfs2: Increment the reference count of an already-active stack.	Joel Becker
2008-06-16	ocfs2: Remove ->hangup() from stack glue operations.	Joel Becker
2008-06-16	ocfs2: Move the call of ocfs2_hb_ctl into the stack glue.	Joel Becker
2008-06-16	ocfs2: Move the hb_ctl_path sysctl into the stack glue.	Joel Becker
2008-04-18	ocfs2: add fsdlm to stackglue	David Teigland
2008-04-18	ocfs2: Add the 'cluster_stack' sysfs file.	Joel Becker
2008-04-18	ocfs2: Create stack glue sysfs files.	Joel Becker
2008-04-18	ocfs2: Break out stackglue into modules.	Joel Becker
2008-04-18	ocfs2: Create ocfs2_stack_operations and split out the o2cb stack.	Joel Becker
2008-04-18	ocfs2: Split o2cb code from generic stack functions.	Joel Becker
2008-04-18	ocfs2: Clean up stackglue initialization	Joel Becker
2008-04-18	ocfs2: Abstract out a debugging function for underlying dlms.	Joel Becker
2008-04-18	ocfs2: Remove CANCELGRANT from the view of dlmglue.	Joel Becker
2008-04-18	ocfs2: Move o2hb functionality into the stack glue.	Joel Becker
2008-04-18	ocfs2: Abstract out node number queries.	Joel Becker
2008-04-18	ocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.	Joel Becker
2008-04-18	ocfs2: Create the lock status block union.	Joel Becker
2008-04-18	ocfs2: Use -errno instead of dlm_status for ocfs2_dlm_lock/unlock() API.	Joel Becker
2008-04-18	ocfs2: Use global DLM_ constants in generic code.	Joel Becker
2008-04-18	ocfs2: Separate out dlm lock functions.	Joel Becker

/* * Copyright (C) 2009 Texas Instruments Inc * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * 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_get_default_field() - Get default field type based on interface * @iface: ptr to vpif interface */ static inline enum v4l2_field vpif_get_default_field( struct vpif_interface *iface) { return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE : V4L2_FIELD_INTERLACED; } /** * 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->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb"); fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; } else { fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; strcpy(fmt->description, "YCbCr4:2:2 Semi-Planar"); 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; } pixfmt->priv = 0; 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; cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", dev_name(vpif_dev)); strlcpy(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); } strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_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 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; strlcpy(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; video_set_drvdata(&ch->video_dev, ch); err = video_register_device(vdev, VFL_TYPE_GRABBER, (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]; common = &ch->common[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 v4l2_fwnode_endpoint bus_cfg; struct vpif_capture_config *pdata; struct vpif_subdev_info *sdinfo; struct vpif_capture_chan_config *chan; unsigned int i; /* * 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 device_node *rem; unsigned int flags; int err; endpoint = of_graph_get_next_endpoint(pdev->dev.of_node, endpoint); if (!endpoint) break; 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) return NULL; 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"); 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; rem = of_graph_get_remote_port_parent(endpoint); if (!rem) { dev_dbg(&pdev->dev, "Remote device at %pOF not found\n", endpoint); goto done; } dev_dbg(&pdev->dev, "Remote device %s, %pOF found\n", rem->name, rem); sdinfo->name = rem->full_name; pdata->asd[i] = devm_kzalloc(&pdev->dev, sizeof(struct v4l2_async_subdev), GFP_KERNEL); if (!pdata->asd[i]) { of_node_put(rem); pdata = NULL; goto done; } pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_FWNODE; pdata->asd[i]->match.fwnode = of_fwnode_handle(rem); of_node_put(rem); } done: if (pdata) { pdata->asd_sizes[0] = i; pdata->subdev_count = i; pdata->card_name = "DA850/OMAP-L138 Video Capture"; } return pdata; } /** * 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; struct resource *res; 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; } 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"); return err; } err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); if (err) { v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); return err; } while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) { err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr, IRQF_SHARED, VPIF_DRIVER_NAME, (void *)(&vpif_obj.dev[res_idx]-> channel_id)); if (err) { err = -EINVAL; goto vpif_unregister; } 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); } vpif_probe_complete(); } else { vpif_obj.notifier.subdevs = vpif_obj.config->asd; vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0]; vpif_obj.notifier.ops = &vpif_async_ops; err = v4l2_async_notifier_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); 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_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);