diff options
Diffstat (limited to 'drivers/media/platform/davinci/vpif_display.c')
-rw-r--r-- | drivers/media/platform/davinci/vpif_display.c | 1408 |
1 files changed, 0 insertions, 1408 deletions
diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c deleted file mode 100644 index fca148b66471..000000000000 --- a/drivers/media/platform/davinci/vpif_display.c +++ /dev/null @@ -1,1408 +0,0 @@ -/* - * vpif-display - VPIF display driver - * Display driver for TI DaVinci VPIF - * - * Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com/ - * 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 version 2. - * - * This program is distributed .as is. WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> - -#include <media/v4l2-ioctl.h> - -#include "vpif.h" -#include "vpif_display.h" - -MODULE_DESCRIPTION("TI DaVinci VPIF Display driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(VPIF_DISPLAY_VERSION); - -#define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50) - -#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_display" -MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); - -/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */ -static int ycmux_mode; - -static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} }; - -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 inline -struct vpif_disp_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb) -{ - return container_of(vb, struct vpif_disp_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 channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); - struct common_obj *common; - - 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; - - if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) { - unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0); - - if (!ISALIGNED(addr + common->ytop_off) || - !ISALIGNED(addr + common->ybtm_off) || - !ISALIGNED(addr + common->ctop_off) || - !ISALIGNED(addr + common->cbtm_off)) { - vpif_err("buffer offset not aligned to 8 bytes\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; - - 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 - * - * This callback function queues the buffer to DMA engine - */ -static void vpif_buffer_queue(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct vpif_disp_buffer *buf = to_vpif_buffer(vbuf); - struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); - struct common_obj *common; - unsigned long flags; - - common = &ch->common[VPIF_VIDEO_INDEX]; - - /* add the buffer to the DMA queue */ - spin_lock_irqsave(&common->irqlock, flags); - 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_display_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_disp_buffer *buf, *tmp; - unsigned long addr, flags; - int ret; - - spin_lock_irqsave(&common->irqlock, flags); - - /* Initialize field_id */ - ch->field_id = 0; - - /* clock settings */ - if (vpif_config_data->set_clock) { - ret = vpif_config_data->set_clock(ch->vpifparams.std_info. - ycmux_mode, ch->vpifparams.std_info.hd_sd); - if (ret < 0) { - vpif_err("can't set clock\n"); - goto err; - } - } - - /* set the parameters and addresses */ - ret = vpif_set_video_params(vpif, ch->channel_id + 2); - if (ret < 0) - goto err; - - ycmux_mode = ret; - vpif_config_addr(ch, ret); - /* Get the next frame from the buffer queue */ - common->next_frm = common->cur_frm = - list_entry(common->dma_queue.next, - struct vpif_disp_buffer, list); - - 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_CHANNEL2_VIDEO == ch->channel_id) { - channel2_intr_assert(); - channel2_intr_enable(1); - enable_channel2(1); - if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en) - channel2_clipping_enable(1); - } - - if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) { - channel3_intr_assert(); - channel3_intr_enable(1); - enable_channel3(1); - if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en) - channel3_clipping_enable(1); - } - - return 0; - -err: - 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; - - common = &ch->common[VPIF_VIDEO_INDEX]; - - /* Disable channel */ - if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { - enable_channel2(0); - channel2_intr_enable(0); - } - if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) { - enable_channel3(0); - channel3_intr_enable(0); - } - - /* release all active buffers */ - spin_lock_irqsave(&common->irqlock, flags); - 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); - } - - while (!list_empty(&common->dma_queue)) { - common->next_frm = list_entry(common->dma_queue.next, - struct vpif_disp_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, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, - .buf_prepare = vpif_buffer_prepare, - .start_streaming = vpif_start_streaming, - .stop_streaming = vpif_stop_streaming, - .buf_queue = vpif_buffer_queue, -}; - -static void process_progressive_mode(struct common_obj *common) -{ - unsigned long addr; - - spin_lock(&common->irqlock); - /* Get the next buffer from buffer queue */ - common->next_frm = list_entry(common->dma_queue.next, - struct vpif_disp_buffer, list); - /* Remove that buffer from the buffer queue */ - list_del(&common->next_frm->list); - spin_unlock(&common->irqlock); - - /* Set top and bottom field addrs in VPIF registers */ - addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0); - common->set_addr(addr + common->ytop_off, - addr + common->ybtm_off, - addr + common->ctop_off, - addr + common->cbtm_off); -} - -static void process_interlaced_mode(int fid, struct common_obj *common) -{ - /* device field id and local field id are in sync */ - /* If this is even field */ - if (0 == fid) { - if (common->cur_frm == common->next_frm) - return; - - /* one frame is displayed If next frame is - * available, release cur_frm and move on */ - /* Copy frame display time */ - common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); - /* Change status of the cur_frm */ - vb2_buffer_done(&common->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_DONE); - /* Make cur_frm pointing to next_frm */ - common->cur_frm = common->next_frm; - - } 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); - return; - } - spin_unlock(&common->irqlock); - /* one field is displayed configure the next - * frame if it is available else hold on current - * frame */ - /* Get next from the buffer queue */ - process_progressive_mode(common); - } -} - -/* - * vpif_channel_isr: It changes status of the displayed 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 channel_obj *ch; - struct common_obj *common; - int fid = -1, i; - int channel_id; - - channel_id = *(int *)(dev_id); - if (!vpif_intr_status(channel_id + 2)) - return IRQ_NONE; - - ch = dev->dev[channel_id]; - for (i = 0; i < VPIF_NUMOBJECTS; i++) { - common = &ch->common[i]; - /* If streaming is started in this channel */ - - if (1 == ch->vpifparams.std_info.frm_fmt) { - spin_lock(&common->irqlock); - if (list_empty(&common->dma_queue)) { - spin_unlock(&common->irqlock); - continue; - } - spin_unlock(&common->irqlock); - - /* Progressive mode */ - if (!channel_first_int[i][channel_id]) { - /* Mark status of the cur_frm to - * done and unlock semaphore on it */ - common->cur_frm->vb.vb2_buf.timestamp = - ktime_get_ns(); - vb2_buffer_done(&common->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_DONE); - /* Make cur_frm pointing to next_frm */ - common->cur_frm = common->next_frm; - } - - channel_first_int[i][channel_id] = 0; - process_progressive_mode(common); - } 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 + 2); - /* If fid does not match with stored field id */ - if (fid != ch->field_id) { - /* Make them in sync */ - if (0 == fid) - ch->field_id = fid; - - return IRQ_HANDLED; - } - } - process_interlaced_mode(fid, common); - } - } - - return IRQ_HANDLED; -} - -static int vpif_update_std_info(struct channel_obj *ch) -{ - struct video_obj *vid_ch = &ch->video; - struct vpif_params *vpifparams = &ch->vpifparams; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - const struct vpif_channel_config_params *config; - - int i; - - for (i = 0; i < vpif_ch_params_count; i++) { - config = &vpif_ch_params[i]; - 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; - } - } - } - - if (i == vpif_ch_params_count) { - vpif_dbg(1, debug, "Format not found\n"); - return -EINVAL; - } - - return 0; -} - -static int vpif_update_resolution(struct channel_obj *ch) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct video_obj *vid_ch = &ch->video; - struct vpif_params *vpifparams = &ch->vpifparams; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - - if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height) - return -EINVAL; - - if (vid_ch->stdid) { - if (vpif_update_std_info(ch)) - return -EINVAL; - } - - common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; - common->fmt.fmt.pix.width = std_info->width; - common->fmt.fmt.pix.height = std_info->height; - vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n", - common->fmt.fmt.pix.width, common->fmt.fmt.pix.height); - - /* Set height and width paramateres */ - common->height = std_info->height; - common->width = std_info->width; - common->fmt.fmt.pix.sizeimage = common->height * common->width * 2; - - 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; - - return 0; -} - -/* - * vpif_calculate_offsets: This function calculates buffers offset for Y and C - * in the top and bottom field - */ -static void vpif_calculate_offsets(struct channel_obj *ch) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct vpif_params *vpifparams = &ch->vpifparams; - enum v4l2_field field = common->fmt.fmt.pix.field; - struct video_obj *vid_ch = &ch->video; - unsigned int hpitch, sizeimage; - - if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) { - if (ch->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)) { - 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) { - 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) { - 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 (ch->vpifparams.std_info.frm_fmt == 1) { - 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 = ch->vpifparams.std_info.stdid; -} - -static void vpif_config_addr(struct channel_obj *ch, int muxmode) -{ - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - if (VPIF_CHANNEL3_VIDEO == ch->channel_id) { - common->set_addr = ch3_set_videobuf_addr; - } else { - if (2 == muxmode) - common->set_addr = ch2_set_videobuf_addr_yc_nmux; - else - common->set_addr = ch2_set_videobuf_addr; - } -} - -/* functions implementing ioctls */ -/** - * 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_display_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; -} - -static int vpif_enum_fmt_vid_out(struct file *file, void *priv, - struct v4l2_fmtdesc *fmt) -{ - if (fmt->index != 0) - return -EINVAL; - - /* Fill in the information about format */ - fmt->pixelformat = V4L2_PIX_FMT_YUV422P; - return 0; -} - -static int vpif_g_fmt_vid_out(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]; - - /* Check the validity of the buffer type */ - if (common->fmt.type != fmt->type) - return -EINVAL; - - if (vpif_update_resolution(ch)) - return -EINVAL; - *fmt = common->fmt; - return 0; -} - -static int vpif_try_fmt_vid_out(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 *pixfmt = &fmt->fmt.pix; - - /* - * to suppress v4l-compliance warnings silently correct - * the pixelformat - */ - if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) - pixfmt->pixelformat = common->fmt.fmt.pix.pixelformat; - - if (vpif_update_resolution(ch)) - return -EINVAL; - - pixfmt->colorspace = common->fmt.fmt.pix.colorspace; - pixfmt->field = common->fmt.fmt.pix.field; - 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; - - return 0; -} - -static int vpif_s_fmt_vid_out(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 *pixfmt = &fmt->fmt.pix; - int ret; - - if (vb2_is_busy(&common->buffer_queue)) - return -EBUSY; - - ret = vpif_try_fmt_vid_out(file, priv, fmt); - if (ret) - return ret; - - /* store the pix format in the channel object */ - common->fmt.fmt.pix = *pixfmt; - - /* store the format in the channel object */ - common->fmt = *fmt; - return 0; -} - -static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id) -{ - struct vpif_display_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_display_chan_config *chan_cfg; - struct v4l2_output output; - int ret; - - if (!config->chan_config[ch->channel_id].outputs) - return -ENODATA; - - chan_cfg = &config->chan_config[ch->channel_id]; - output = chan_cfg->outputs[ch->output_idx].output; - if (output.capabilities != V4L2_OUT_CAP_STD) - return -ENODATA; - - if (vb2_is_busy(&common->buffer_queue)) - return -EBUSY; - - - if (!(std_id & VPIF_V4L2_STD)) - return -EINVAL; - - /* 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_resolution(ch)) - return -EINVAL; - - common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width; - - ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, - s_std_output, std_id); - if (ret < 0) { - vpif_err("Failed to set output standard\n"); - return ret; - } - - ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, - s_std, std_id); - if (ret < 0) - vpif_err("Failed to set standard for sub devices\n"); - return ret; -} - -static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) -{ - struct vpif_display_config *config = vpif_dev->platform_data; - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - struct vpif_display_chan_config *chan_cfg; - struct v4l2_output output; - - if (!config->chan_config[ch->channel_id].outputs) - return -ENODATA; - - chan_cfg = &config->chan_config[ch->channel_id]; - output = chan_cfg->outputs[ch->output_idx].output; - if (output.capabilities != V4L2_OUT_CAP_STD) - return -ENODATA; - - *std = ch->video.stdid; - return 0; -} - -static int vpif_enum_output(struct file *file, void *fh, - struct v4l2_output *output) -{ - - struct vpif_display_config *config = vpif_dev->platform_data; - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - struct vpif_display_chan_config *chan_cfg; - - chan_cfg = &config->chan_config[ch->channel_id]; - if (output->index >= chan_cfg->output_count) { - vpif_dbg(1, debug, "Invalid output index\n"); - return -EINVAL; - } - - *output = chan_cfg->outputs[output->index].output; - return 0; -} - -/** - * vpif_output_to_subdev() - Maps output to sub device - * @vpif_cfg: global config ptr - * @chan_cfg: channel config ptr - * @index: Given output index from application - * - * lookup the sub device information for a given output index. - * we report all the output to application. output table also - * has sub device name for the each output - */ -static int -vpif_output_to_subdev(struct vpif_display_config *vpif_cfg, - struct vpif_display_chan_config *chan_cfg, int index) -{ - struct vpif_subdev_info *subdev_info; - const char *subdev_name; - int i; - - vpif_dbg(2, debug, "vpif_output_to_subdev\n"); - - if (!chan_cfg->outputs) - return -1; - - subdev_name = chan_cfg->outputs[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->subdevinfo[i]; - if (!strcmp(subdev_info->name, subdev_name)) - return i; - } - return -1; -} - -/** - * vpif_set_output() - Select an output - * @vpif_cfg: global config ptr - * @ch: channel - * @index: Given output index from application - * - * Select the given output. - */ -static int vpif_set_output(struct vpif_display_config *vpif_cfg, - struct channel_obj *ch, int index) -{ - struct vpif_display_chan_config *chan_cfg = - &vpif_cfg->chan_config[ch->channel_id]; - struct v4l2_subdev *sd = NULL; - u32 input = 0, output = 0; - int sd_index; - int ret; - - sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index); - if (sd_index >= 0) - sd = vpif_obj.sd[sd_index]; - - if (sd) { - input = chan_cfg->outputs[index].input_route; - output = chan_cfg->outputs[index].output_route; - ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0); - if (ret < 0 && ret != -ENOIOCTLCMD) { - vpif_err("Failed to set output\n"); - return ret; - } - - } - ch->output_idx = index; - ch->sd = sd; - if (chan_cfg->outputs) - /* update tvnorms from the sub device output info */ - ch->video_dev.tvnorms = chan_cfg->outputs[index].output.std; - return 0; -} - -static int vpif_s_output(struct file *file, void *priv, unsigned int i) -{ - struct vpif_display_config *config = vpif_dev->platform_data; - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - struct vpif_display_chan_config *chan_cfg; - struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - - if (vb2_is_busy(&common->buffer_queue)) - return -EBUSY; - - chan_cfg = &config->chan_config[ch->channel_id]; - - if (i >= chan_cfg->output_count) - return -EINVAL; - - return vpif_set_output(config, ch, i); -} - -static int vpif_g_output(struct file *file, void *priv, unsigned int *i) -{ - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - - *i = ch->output_idx; - - 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_display_config *config = vpif_dev->platform_data; - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - struct vpif_display_chan_config *chan_cfg; - struct v4l2_output output; - int ret; - - if (!config->chan_config[ch->channel_id].outputs) - return -ENODATA; - - chan_cfg = &config->chan_config[ch->channel_id]; - output = chan_cfg->outputs[ch->output_idx].output; - if (output.capabilities != V4L2_OUT_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_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_display_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 common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; - struct vpif_channel_config_params *std_info = &vpifparams->std_info; - struct video_obj *vid_ch = &ch->video; - struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt; - struct vpif_display_chan_config *chan_cfg; - struct v4l2_output output; - int ret; - - if (!config->chan_config[ch->channel_id].outputs) - return -ENODATA; - - chan_cfg = &config->chan_config[ch->channel_id]; - output = chan_cfg->outputs[ch->output_idx].output; - if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS) - return -ENODATA; - - if (vb2_is_busy(&common->buffer_queue)) - return -EBUSY; - - if (timings->type != V4L2_DV_BT_656_1120) { - vpif_dbg(2, debug, "Timing type not defined\n"); - return -EINVAL; - } - - /* 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_display_config *config = vpif_dev->platform_data; - struct video_device *vdev = video_devdata(file); - struct channel_obj *ch = video_get_drvdata(vdev); - struct vpif_display_chan_config *chan_cfg; - struct video_obj *vid_ch = &ch->video; - struct v4l2_output output; - - if (!config->chan_config[ch->channel_id].outputs) - goto error; - - chan_cfg = &config->chan_config[ch->channel_id]; - output = chan_cfg->outputs[ch->output_idx].output; - - if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS) - goto error; - - *timings = vid_ch->dv_timings; - - return 0; -error: - return -ENODATA; -} - -/* - * 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 display ioctl operations */ -static const struct v4l2_ioctl_ops vpif_ioctl_ops = { - .vidioc_querycap = vpif_querycap, - .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out, - .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out, - .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out, - .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out, - - .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_s_std = vpif_s_std, - .vidioc_g_std = vpif_g_std, - - .vidioc_enum_output = vpif_enum_output, - .vidioc_s_output = vpif_s_output, - .vidioc_g_output = vpif_g_output, - - .vidioc_enum_dv_timings = vpif_enum_dv_timings, - .vidioc_s_dv_timings = vpif_s_dv_timings, - .vidioc_g_dv_timings = vpif_g_dv_timings, - - .vidioc_log_status = vpif_log_status, -}; - -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 -}; - -/*Configure the channels, buffer sizei, request irq */ -static int initialize_vpif(void) -{ - int free_channel_objects_index; - int err, i, j; - - /* Allocate memory for six channel objects */ - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { - vpif_obj.dev[i] = - kzalloc(sizeof(struct channel_obj), 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 void free_vpif_objs(void) -{ - int i; - - for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) - kfree(vpif_obj.dev[i]); -} - -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_DISPLAY_MAX_DEVICES; j++) { - ch = vpif_obj.dev[j]; - /* Initialize field of the channel objects */ - for (k = 0; k < VPIF_NUMOBJECTS; k++) { - common = &ch->common[k]; - spin_lock_init(&common->irqlock); - mutex_init(&common->lock); - common->set_addr = NULL; - common->ytop_off = 0; - common->ybtm_off = 0; - common->ctop_off = 0; - common->cbtm_off = 0; - common->cur_frm = NULL; - common->next_frm = NULL; - memset(&common->fmt, 0, sizeof(common->fmt)); - } - ch->initialized = 0; - if (vpif_obj.config->subdev_count) - ch->sd = vpif_obj.sd[0]; - ch->channel_id = j; - - memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); - - ch->common[VPIF_VIDEO_INDEX].fmt.type = - V4L2_BUF_TYPE_VIDEO_OUTPUT; - - /* select output 0 */ - err = vpif_set_output(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)); - vpif_update_resolution(ch); - - /* Initialize vb2 queue */ - q = &common->buffer_queue; - q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - 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_disp_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_display: vb2_queue_init() failed\n"); - goto probe_out; - } - - INIT_LIST_HEAD(&common->dma_queue); - - /* register video device */ - vpif_dbg(1, debug, "channel=%p,channel->video_dev=%p\n", - ch, &ch->video_dev); - - /* 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_TX; - vdev->queue = q; - vdev->lock = &common->lock; - vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; - video_set_drvdata(&ch->video_dev, ch); - err = video_register_device(vdev, VFL_TYPE_VIDEO, - (j ? 3 : 2)); - if (err < 0) - goto probe_out; - } - - return 0; - -probe_out: - for (k = 0; k < j; k++) { - ch = vpif_obj.dev[k]; - video_unregister_device(&ch->video_dev); - } - return err; -} - -/* - * vpif_probe: This function 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; - - 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"); - 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) { - vpif_err("VPIF IRQ request failed\n"); - goto vpif_unregister; - } - } while (++res_idx); - - vpif_obj.config = pdev->dev.platform_data; - subdev_count = vpif_obj.config->subdev_count; - subdevdata = vpif_obj.config->subdevinfo; - vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL); - if (!vpif_obj.sd) { - err = -ENOMEM; - goto vpif_unregister; - } - - i2c_adap = i2c_get_adapter(vpif_obj.config->i2c_adapter_id); - for (i = 0; i < subdev_count; i++) { - vpif_obj.sd[i] = - v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, - i2c_adap, - &subdevdata[i].board_info, - NULL); - if (!vpif_obj.sd[i]) { - vpif_err("Error registering v4l2 subdevice\n"); - err = -ENODEV; - goto probe_subdev_out; - } - - if (vpif_obj.sd[i]) - vpif_obj.sd[i]->grp_id = 1 << i; - } - err = vpif_probe_complete(); - if (err) - goto probe_subdev_out; - - return 0; - -probe_subdev_out: - kfree(vpif_obj.sd); -vpif_unregister: - v4l2_device_unregister(&vpif_obj.v4l2_dev); -vpif_free: - free_vpif_objs(); - - return err; -} - -/* - * vpif_remove: It un-register channels from V4L2 driver - */ -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_DISPLAY_MAX_DEVICES; i++) { - /* Get the pointer to the channel object */ - ch = vpif_obj.dev[i]; - /* Unregister video device */ - video_unregister_device(&ch->video_dev); - } - free_vpif_objs(); - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int vpif_suspend(struct device *dev) -{ - struct common_obj *common; - struct channel_obj *ch; - int i; - - for (i = 0; i < VPIF_DISPLAY_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_CHANNEL2_VIDEO) { - enable_channel2(0); - channel2_intr_enable(0); - } - if (ch->channel_id == VPIF_CHANNEL3_VIDEO || - ycmux_mode == 2) { - enable_channel3(0); - channel3_intr_enable(0); - } - mutex_unlock(&common->lock); - } - - return 0; -} - -static int vpif_resume(struct device *dev) -{ - - struct common_obj *common; - struct channel_obj *ch; - int i; - - for (i = 0; i < VPIF_DISPLAY_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_CHANNEL2_VIDEO) { - enable_channel2(1); - channel2_intr_enable(1); - } - if (ch->channel_id == VPIF_CHANNEL3_VIDEO || - ycmux_mode == 2) { - enable_channel3(1); - channel3_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); |