| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Guennadi Liakhovetski | 4564 | 65.23% | 5 | 10.87% |
| Hans Verkuil | 2279 | 32.57% | 22 | 47.83% |
| Laurent Pinchart | 69 | 0.99% | 2 | 4.35% |
| Junghak Sung | 33 | 0.47% | 2 | 4.35% |
| Mauro Carvalho Chehab | 30 | 0.43% | 7 | 15.22% |
| Alexey Khoroshilov | 6 | 0.09% | 1 | 2.17% |
| Lad Prabhakar | 5 | 0.07% | 1 | 2.17% |
| Boris Brezillon | 3 | 0.04% | 1 | 2.17% |
| Paul Gortmaker | 3 | 0.04% | 1 | 2.17% |
| Kuninori Morimoto | 2 | 0.03% | 1 | 2.17% |
| Sachin Kamat | 1 | 0.01% | 1 | 2.17% |
| Joe Perches | 1 | 0.01% | 1 | 2.17% |
| Julia Lawall | 1 | 0.01% | 1 | 2.17% |
| Total | 6997 | 46 |
// SPDX-License-Identifier: GPL-2.0 /* * SuperH Video Output Unit (VOU) driver * * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> */ #include <linux/dma-mapping.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <linux/module.h> #include <media/drv-intf/sh_vou.h> #include <media/v4l2-common.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-mediabus.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-contig.h> /* Mirror addresses are not available for all registers */ #define VOUER 0 #define VOUCR 4 #define VOUSTR 8 #define VOUVCR 0xc #define VOUISR 0x10 #define VOUBCR 0x14 #define VOUDPR 0x18 #define VOUDSR 0x1c #define VOUVPR 0x20 #define VOUIR 0x24 #define VOUSRR 0x28 #define VOUMSR 0x2c #define VOUHIR 0x30 #define VOUDFR 0x34 #define VOUAD1R 0x38 #define VOUAD2R 0x3c #define VOUAIR 0x40 #define VOUSWR 0x44 #define VOURCR 0x48 #define VOURPR 0x50 enum sh_vou_status { SH_VOU_IDLE, SH_VOU_INITIALISING, SH_VOU_RUNNING, }; #define VOU_MIN_IMAGE_WIDTH 16 #define VOU_MAX_IMAGE_WIDTH 720 #define VOU_MIN_IMAGE_HEIGHT 16 struct sh_vou_buffer { struct vb2_v4l2_buffer vb; struct list_head list; }; static inline struct sh_vou_buffer *to_sh_vou_buffer(struct vb2_v4l2_buffer *vb2) { return container_of(vb2, struct sh_vou_buffer, vb); } struct sh_vou_device { struct v4l2_device v4l2_dev; struct video_device vdev; struct sh_vou_pdata *pdata; spinlock_t lock; void __iomem *base; /* State information */ struct v4l2_pix_format pix; struct v4l2_rect rect; struct list_head buf_list; v4l2_std_id std; int pix_idx; struct vb2_queue queue; struct sh_vou_buffer *active; enum sh_vou_status status; unsigned sequence; struct mutex fop_lock; }; /* Register access routines for sides A, B and mirror addresses */ static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg, u32 value) { __raw_writel(value, vou_dev->base + reg); } static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg, u32 value) { __raw_writel(value, vou_dev->base + reg); __raw_writel(value, vou_dev->base + reg + 0x1000); } static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg, u32 value) { __raw_writel(value, vou_dev->base + reg + 0x2000); } static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg) { return __raw_readl(vou_dev->base + reg); } static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg, u32 value, u32 mask) { u32 old = __raw_readl(vou_dev->base + reg); value = (value & mask) | (old & ~mask); __raw_writel(value, vou_dev->base + reg); } static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg, u32 value, u32 mask) { sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask); } static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg, u32 value, u32 mask) { sh_vou_reg_a_set(vou_dev, reg, value, mask); sh_vou_reg_b_set(vou_dev, reg, value, mask); } struct sh_vou_fmt { u32 pfmt; char *desc; unsigned char bpp; unsigned char bpl; unsigned char rgb; unsigned char yf; unsigned char pkf; }; /* Further pixel formats can be added */ static struct sh_vou_fmt vou_fmt[] = { { .pfmt = V4L2_PIX_FMT_NV12, .bpp = 12, .bpl = 1, .desc = "YVU420 planar", .yf = 0, .rgb = 0, }, { .pfmt = V4L2_PIX_FMT_NV16, .bpp = 16, .bpl = 1, .desc = "YVYU planar", .yf = 1, .rgb = 0, }, { .pfmt = V4L2_PIX_FMT_RGB24, .bpp = 24, .bpl = 3, .desc = "RGB24", .pkf = 2, .rgb = 1, }, { .pfmt = V4L2_PIX_FMT_RGB565, .bpp = 16, .bpl = 2, .desc = "RGB565", .pkf = 3, .rgb = 1, }, { .pfmt = V4L2_PIX_FMT_RGB565X, .bpp = 16, .bpl = 2, .desc = "RGB565 byteswapped", .pkf = 3, .rgb = 1, }, }; static void sh_vou_schedule_next(struct sh_vou_device *vou_dev, struct vb2_v4l2_buffer *vbuf) { dma_addr_t addr1, addr2; addr1 = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0); switch (vou_dev->pix.pixelformat) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV16: addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height; break; default: addr2 = 0; } sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1); sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2); } static void sh_vou_stream_config(struct sh_vou_device *vou_dev) { unsigned int row_coeff; #ifdef __LITTLE_ENDIAN u32 dataswap = 7; #else u32 dataswap = 0; #endif switch (vou_dev->pix.pixelformat) { default: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV16: row_coeff = 1; break; case V4L2_PIX_FMT_RGB565: dataswap ^= 1; /* fall through */ case V4L2_PIX_FMT_RGB565X: row_coeff = 2; break; case V4L2_PIX_FMT_RGB24: row_coeff = 3; break; } sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap); sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff); } /* Locking: caller holds fop_lock mutex */ static int sh_vou_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq); struct v4l2_pix_format *pix = &vou_dev->pix; int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8; dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); if (*nplanes) return sizes[0] < pix->height * bytes_per_line ? -EINVAL : 0; *nplanes = 1; sizes[0] = pix->height * bytes_per_line; return 0; } static int sh_vou_buf_prepare(struct vb2_buffer *vb) { struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue); struct v4l2_pix_format *pix = &vou_dev->pix; unsigned bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8; unsigned size = pix->height * bytes_per_line; dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); if (vb2_plane_size(vb, 0) < size) { /* User buffer too small */ dev_warn(vou_dev->v4l2_dev.dev, "buffer too small (%lu < %u)\n", vb2_plane_size(vb, 0), size); return -EINVAL; } vb2_set_plane_payload(vb, 0, size); return 0; } /* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */ static void sh_vou_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue); struct sh_vou_buffer *shbuf = to_sh_vou_buffer(vbuf); unsigned long flags; spin_lock_irqsave(&vou_dev->lock, flags); list_add_tail(&shbuf->list, &vou_dev->buf_list); spin_unlock_irqrestore(&vou_dev->lock, flags); } static int sh_vou_start_streaming(struct vb2_queue *vq, unsigned int count) { struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq); struct sh_vou_buffer *buf, *node; int ret; vou_dev->sequence = 0; ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 1); if (ret < 0 && ret != -ENOIOCTLCMD) { list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) { vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); list_del(&buf->list); } vou_dev->active = NULL; return ret; } buf = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list); vou_dev->active = buf; /* Start from side A: we use mirror addresses, so, set B */ sh_vou_reg_a_write(vou_dev, VOURPR, 1); dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n", __func__, sh_vou_reg_a_read(vou_dev, VOUSTR)); sh_vou_schedule_next(vou_dev, &buf->vb); buf = list_entry(buf->list.next, struct sh_vou_buffer, list); /* Second buffer - initialise register side B */ sh_vou_reg_a_write(vou_dev, VOURPR, 0); sh_vou_schedule_next(vou_dev, &buf->vb); /* Register side switching with frame VSYNC */ sh_vou_reg_a_write(vou_dev, VOURCR, 5); sh_vou_stream_config(vou_dev); /* Enable End-of-Frame (VSYNC) interrupts */ sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004); /* Two buffers on the queue - activate the hardware */ vou_dev->status = SH_VOU_RUNNING; sh_vou_reg_a_write(vou_dev, VOUER, 0x107); return 0; } static void sh_vou_stop_streaming(struct vb2_queue *vq) { struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq); struct sh_vou_buffer *buf, *node; unsigned long flags; v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0); /* disable output */ sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); /* ...but the current frame will complete */ sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); msleep(50); spin_lock_irqsave(&vou_dev->lock, flags); list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) { vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); list_del(&buf->list); } vou_dev->active = NULL; spin_unlock_irqrestore(&vou_dev->lock, flags); } static const struct vb2_ops sh_vou_qops = { .queue_setup = sh_vou_queue_setup, .buf_prepare = sh_vou_buf_prepare, .buf_queue = sh_vou_buf_queue, .start_streaming = sh_vou_start_streaming, .stop_streaming = sh_vou_stop_streaming, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, }; /* Video IOCTLs */ static int sh_vou_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct sh_vou_device *vou_dev = video_drvdata(file); dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); strscpy(cap->card, "SuperH VOU", sizeof(cap->card)); strscpy(cap->driver, "sh-vou", sizeof(cap->driver)); strscpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } /* Enumerate formats, that the device can accept from the user */ static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv, struct v4l2_fmtdesc *fmt) { struct sh_vou_device *vou_dev = video_drvdata(file); if (fmt->index >= ARRAY_SIZE(vou_fmt)) return -EINVAL; dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; strscpy(fmt->description, vou_fmt[fmt->index].desc, sizeof(fmt->description)); fmt->pixelformat = vou_fmt[fmt->index].pfmt; return 0; } static int sh_vou_g_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *fmt) { struct sh_vou_device *vou_dev = video_drvdata(file); dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; fmt->fmt.pix = vou_dev->pix; return 0; } static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4}; static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1}; static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3}; static const unsigned char vou_scale_v_num[] = {1, 2, 4}; static const unsigned char vou_scale_v_den[] = {1, 1, 1}; static const unsigned char vou_scale_v_fld[] = {0, 1}; static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev, int pix_idx, int w_idx, int h_idx) { struct sh_vou_fmt *fmt = vou_fmt + pix_idx; unsigned int black_left, black_top, width_max, frame_in_height, frame_out_height, frame_out_top; struct v4l2_rect *rect = &vou_dev->rect; struct v4l2_pix_format *pix = &vou_dev->pix; u32 vouvcr = 0, dsr_h, dsr_v; if (vou_dev->std & V4L2_STD_525_60) { width_max = 858; /* height_max = 262; */ } else { width_max = 864; /* height_max = 312; */ } frame_in_height = pix->height / 2; frame_out_height = rect->height / 2; frame_out_top = rect->top / 2; /* * Cropping scheme: max useful image is 720x480, and the total video * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, * of which the first 33 / 25 clocks HSYNC must be held active. This * has to be configured in CR[HW]. 1 pixel equals 2 clock periods. * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, * beyond DSR, specified on the left and top by the VPR register "black * pixels" and out-of-image area (DPR) "background pixels." We fix VPR * at 138 / 144 : 20, because that's the HSYNC timing, that our first * client requires, and that's exactly what leaves us 720 pixels for the * image; we leave VPR[VVP] at default 20 for now, because the client * doesn't seem to have any special requirements for it. Otherwise we * could also set it to max - 240 = 22 / 72. Thus VPR depends only on * the selected standard, and DPR and DSR are selected according to * cropping. Q: how does the client detect the first valid line? Does * HSYNC stay inactive during invalid (black) lines? */ black_left = width_max - VOU_MAX_IMAGE_WIDTH; black_top = 20; dsr_h = rect->width + rect->left; dsr_v = frame_out_height + frame_out_top; dev_dbg(vou_dev->v4l2_dev.dev, "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", pix->width, frame_in_height, black_left, black_top, rect->left, frame_out_top, dsr_h, dsr_v); /* VOUISR height - half of a frame height in frame mode */ sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); /* * if necessary, we could set VOUHIR to * max(black_left + dsr_h, width_max) here */ if (w_idx) vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); if (h_idx) vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr); /* To produce a colour bar for testing set bit 23 of VOUVCR */ sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); sh_vou_reg_ab_write(vou_dev, VOUDFR, fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16)); } struct sh_vou_geometry { struct v4l2_rect output; unsigned int in_width; unsigned int in_height; int scale_idx_h; int scale_idx_v; }; /* * Find input geometry, that we can use to produce output, closest to the * requested rectangle, using VOU scaling */ static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std) { /* The compiler cannot know, that best and idx will indeed be set */ unsigned int best_err = UINT_MAX, best = 0, img_height_max; int i, idx = 0; if (std & V4L2_STD_525_60) img_height_max = 480; else img_height_max = 576; /* Image width must be a multiple of 4 */ v4l_bound_align_image(&geo->in_width, VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2, &geo->in_height, VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0); /* Select scales to come as close as possible to the output image */ for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) { unsigned int err; unsigned int found = geo->output.width * vou_scale_h_den[i] / vou_scale_h_num[i]; if (found > VOU_MAX_IMAGE_WIDTH) /* scales increase */ break; err = abs(found - geo->in_width); if (err < best_err) { best_err = err; idx = i; best = found; } if (!err) break; } geo->in_width = best; geo->scale_idx_h = idx; best_err = UINT_MAX; /* This loop can be replaced with one division */ for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) { unsigned int err; unsigned int found = geo->output.height * vou_scale_v_den[i] / vou_scale_v_num[i]; if (found > img_height_max) /* scales increase */ break; err = abs(found - geo->in_height); if (err < best_err) { best_err = err; idx = i; best = found; } if (!err) break; } geo->in_height = best; geo->scale_idx_v = idx; } /* * Find output geometry, that we can produce, using VOU scaling, closest to * the requested rectangle */ static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std) { unsigned int best_err = UINT_MAX, best = geo->in_width, width_max, height_max, img_height_max; int i, idx_h = 0, idx_v = 0; if (std & V4L2_STD_525_60) { width_max = 858; height_max = 262 * 2; img_height_max = 480; } else { width_max = 864; height_max = 312 * 2; img_height_max = 576; } /* Select scales to come as close as possible to the output image */ for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) { unsigned int err; unsigned int found = geo->in_width * vou_scale_h_num[i] / vou_scale_h_den[i]; if (found > VOU_MAX_IMAGE_WIDTH) /* scales increase */ break; err = abs(found - geo->output.width); if (err < best_err) { best_err = err; idx_h = i; best = found; } if (!err) break; } geo->output.width = best; geo->scale_idx_h = idx_h; if (geo->output.left + best > width_max) geo->output.left = width_max - best; pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width, vou_scale_h_num[idx_h], vou_scale_h_den[idx_h], best); best_err = UINT_MAX; /* This loop can be replaced with one division */ for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) { unsigned int err; unsigned int found = geo->in_height * vou_scale_v_num[i] / vou_scale_v_den[i]; if (found > img_height_max) /* scales increase */ break; err = abs(found - geo->output.height); if (err < best_err) { best_err = err; idx_v = i; best = found; } if (!err) break; } geo->output.height = best; geo->scale_idx_v = idx_v; if (geo->output.top + best > height_max) geo->output.top = height_max - best; pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height, vou_scale_v_num[idx_v], vou_scale_v_den[idx_v], best); } static int sh_vou_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *fmt) { struct sh_vou_device *vou_dev = video_drvdata(file); struct v4l2_pix_format *pix = &fmt->fmt.pix; unsigned int img_height_max; int pix_idx; dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); pix->field = V4L2_FIELD_INTERLACED; pix->colorspace = V4L2_COLORSPACE_SMPTE170M; pix->ycbcr_enc = pix->quantization = 0; for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) if (vou_fmt[pix_idx].pfmt == pix->pixelformat) break; if (pix_idx == ARRAY_SIZE(vou_fmt)) return -EINVAL; if (vou_dev->std & V4L2_STD_525_60) img_height_max = 480; else img_height_max = 576; v4l_bound_align_image(&pix->width, VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2, &pix->height, VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0); pix->bytesperline = pix->width * vou_fmt[pix_idx].bpl; pix->sizeimage = pix->height * ((pix->width * vou_fmt[pix_idx].bpp) >> 3); return 0; } static int sh_vou_set_fmt_vid_out(struct sh_vou_device *vou_dev, struct v4l2_pix_format *pix) { unsigned int img_height_max; struct sh_vou_geometry geo; struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, /* Revisit: is this the correct code? */ .format.code = MEDIA_BUS_FMT_YUYV8_2X8, .format.field = V4L2_FIELD_INTERLACED, .format.colorspace = V4L2_COLORSPACE_SMPTE170M, }; struct v4l2_mbus_framefmt *mbfmt = &format.format; int pix_idx; int ret; if (vb2_is_busy(&vou_dev->queue)) return -EBUSY; for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) if (vou_fmt[pix_idx].pfmt == pix->pixelformat) break; geo.in_width = pix->width; geo.in_height = pix->height; geo.output = vou_dev->rect; vou_adjust_output(&geo, vou_dev->std); mbfmt->width = geo.output.width; mbfmt->height = geo.output.height; ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad, set_fmt, NULL, &format); /* Must be implemented, so, don't check for -ENOIOCTLCMD */ if (ret < 0) return ret; dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, geo.output.width, geo.output.height, mbfmt->width, mbfmt->height); if (vou_dev->std & V4L2_STD_525_60) img_height_max = 480; else img_height_max = 576; /* Sanity checks */ if ((unsigned)mbfmt->width > VOU_MAX_IMAGE_WIDTH || (unsigned)mbfmt->height > img_height_max || mbfmt->code != MEDIA_BUS_FMT_YUYV8_2X8) return -EIO; if (mbfmt->width != geo.output.width || mbfmt->height != geo.output.height) { geo.output.width = mbfmt->width; geo.output.height = mbfmt->height; vou_adjust_input(&geo, vou_dev->std); } /* We tried to preserve output rectangle, but it could have changed */ vou_dev->rect = geo.output; pix->width = geo.in_width; pix->height = geo.in_height; dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__, pix->width, pix->height); vou_dev->pix_idx = pix_idx; vou_dev->pix = *pix; sh_vou_configure_geometry(vou_dev, pix_idx, geo.scale_idx_h, geo.scale_idx_v); return 0; } static int sh_vou_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *fmt) { struct sh_vou_device *vou_dev = video_drvdata(file); int ret = sh_vou_try_fmt_vid_out(file, priv, fmt); if (ret) return ret; return sh_vou_set_fmt_vid_out(vou_dev, &fmt->fmt.pix); } static int sh_vou_enum_output(struct file *file, void *fh, struct v4l2_output *a) { struct sh_vou_device *vou_dev = video_drvdata(file); if (a->index) return -EINVAL; strscpy(a->name, "Video Out", sizeof(a->name)); a->type = V4L2_OUTPUT_TYPE_ANALOG; a->std = vou_dev->vdev.tvnorms; return 0; } static int sh_vou_g_output(struct file *file, void *fh, unsigned int *i) { *i = 0; return 0; } static int sh_vou_s_output(struct file *file, void *fh, unsigned int i) { return i ? -EINVAL : 0; } static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt) { switch (bus_fmt) { default: pr_warn("%s(): Invalid bus-format code %d, using default 8-bit\n", __func__, bus_fmt); /* fall through */ case SH_VOU_BUS_8BIT: return 1; case SH_VOU_BUS_16BIT: return 0; case SH_VOU_BUS_BT656: return 3; } } static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id std_id) { struct sh_vou_device *vou_dev = video_drvdata(file); int ret; dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id); if (std_id == vou_dev->std) return 0; if (vb2_is_busy(&vou_dev->queue)) return -EBUSY; ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_std_output, std_id); /* Shall we continue, if the subdev doesn't support .s_std_output()? */ if (ret < 0 && ret != -ENOIOCTLCMD) return ret; vou_dev->rect.top = vou_dev->rect.left = 0; vou_dev->rect.width = VOU_MAX_IMAGE_WIDTH; if (std_id & V4L2_STD_525_60) { sh_vou_reg_ab_set(vou_dev, VOUCR, sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29); vou_dev->rect.height = 480; } else { sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29); vou_dev->rect.height = 576; } vou_dev->pix.width = vou_dev->rect.width; vou_dev->pix.height = vou_dev->rect.height; vou_dev->pix.bytesperline = vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpl; vou_dev->pix.sizeimage = vou_dev->pix.height * ((vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpp) >> 3); vou_dev->std = std_id; sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix); return 0; } static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std) { struct sh_vou_device *vou_dev = video_drvdata(file); dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); *std = vou_dev->std; return 0; } static int sh_vou_log_status(struct file *file, void *priv) { struct sh_vou_device *vou_dev = video_drvdata(file); pr_info("VOUER: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUER)); pr_info("VOUCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUCR)); pr_info("VOUSTR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSTR)); pr_info("VOUVCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVCR)); pr_info("VOUISR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUISR)); pr_info("VOUBCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUBCR)); pr_info("VOUDPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDPR)); pr_info("VOUDSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDSR)); pr_info("VOUVPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVPR)); pr_info("VOUIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUIR)); pr_info("VOUSRR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSRR)); pr_info("VOUMSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUMSR)); pr_info("VOUHIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUHIR)); pr_info("VOUDFR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDFR)); pr_info("VOUAD1R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD1R)); pr_info("VOUAD2R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD2R)); pr_info("VOUAIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAIR)); pr_info("VOUSWR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSWR)); pr_info("VOURCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURCR)); pr_info("VOURPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURPR)); return 0; } static int sh_vou_g_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct sh_vou_device *vou_dev = video_drvdata(file); if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) return -EINVAL; switch (sel->target) { case V4L2_SEL_TGT_COMPOSE: sel->r = vou_dev->rect; break; case V4L2_SEL_TGT_COMPOSE_DEFAULT: case V4L2_SEL_TGT_COMPOSE_BOUNDS: sel->r.left = 0; sel->r.top = 0; sel->r.width = VOU_MAX_IMAGE_WIDTH; if (vou_dev->std & V4L2_STD_525_60) sel->r.height = 480; else sel->r.height = 576; break; default: return -EINVAL; } return 0; } /* Assume a dull encoder, do all the work ourselves. */ static int sh_vou_s_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct v4l2_rect *rect = &sel->r; struct sh_vou_device *vou_dev = video_drvdata(file); struct v4l2_subdev_selection sd_sel = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, .target = V4L2_SEL_TGT_COMPOSE, }; struct v4l2_pix_format *pix = &vou_dev->pix; struct sh_vou_geometry geo; struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, /* Revisit: is this the correct code? */ .format.code = MEDIA_BUS_FMT_YUYV8_2X8, .format.field = V4L2_FIELD_INTERLACED, .format.colorspace = V4L2_COLORSPACE_SMPTE170M, }; unsigned int img_height_max; int ret; if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || sel->target != V4L2_SEL_TGT_COMPOSE) return -EINVAL; if (vb2_is_busy(&vou_dev->queue)) return -EBUSY; if (vou_dev->std & V4L2_STD_525_60) img_height_max = 480; else img_height_max = 576; v4l_bound_align_image(&rect->width, VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 1, &rect->height, VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0); if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH) rect->left = VOU_MAX_IMAGE_WIDTH - rect->width; if (rect->height + rect->top > img_height_max) rect->top = img_height_max - rect->height; geo.output = *rect; geo.in_width = pix->width; geo.in_height = pix->height; /* Configure the encoder one-to-one, position at 0, ignore errors */ sd_sel.r.width = geo.output.width; sd_sel.r.height = geo.output.height; /* * We first issue a S_SELECTION, so that the subsequent S_FMT delivers the * final encoder configuration. */ v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad, set_selection, NULL, &sd_sel); format.format.width = geo.output.width; format.format.height = geo.output.height; ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad, set_fmt, NULL, &format); /* Must be implemented, so, don't check for -ENOIOCTLCMD */ if (ret < 0) return ret; /* Sanity checks */ if ((unsigned)format.format.width > VOU_MAX_IMAGE_WIDTH || (unsigned)format.format.height > img_height_max || format.format.code != MEDIA_BUS_FMT_YUYV8_2X8) return -EIO; geo.output.width = format.format.width; geo.output.height = format.format.height; /* * No down-scaling. According to the API, current call has precedence: * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two. */ vou_adjust_input(&geo, vou_dev->std); /* We tried to preserve output rectangle, but it could have changed */ vou_dev->rect = geo.output; pix->width = geo.in_width; pix->height = geo.in_height; sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx, geo.scale_idx_h, geo.scale_idx_v); return 0; } static irqreturn_t sh_vou_isr(int irq, void *dev_id) { struct sh_vou_device *vou_dev = dev_id; static unsigned long j; struct sh_vou_buffer *vb; static int cnt; u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked; u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR); if (!(irq_status & 0x300)) { if (printk_timed_ratelimit(&j, 500)) dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n", irq_status); return IRQ_NONE; } spin_lock(&vou_dev->lock); if (!vou_dev->active || list_empty(&vou_dev->buf_list)) { if (printk_timed_ratelimit(&j, 500)) dev_warn(vou_dev->v4l2_dev.dev, "IRQ without active buffer: %x!\n", irq_status); /* Just ack: buf_release will disable further interrupts */ sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300); spin_unlock(&vou_dev->lock); return IRQ_HANDLED; } masked = ~(0x300 & irq_status) & irq_status & 0x30304; dev_dbg(vou_dev->v4l2_dev.dev, "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n", irq_status, masked, vou_status, cnt); cnt++; /* side = vou_status & 0x10000; */ /* Clear only set interrupts */ sh_vou_reg_a_write(vou_dev, VOUIR, masked); vb = vou_dev->active; if (list_is_singular(&vb->list)) { /* Keep cycling while no next buffer is available */ sh_vou_schedule_next(vou_dev, &vb->vb); spin_unlock(&vou_dev->lock); return IRQ_HANDLED; } list_del(&vb->list); vb->vb.vb2_buf.timestamp = ktime_get_ns(); vb->vb.sequence = vou_dev->sequence++; vb->vb.field = V4L2_FIELD_INTERLACED; vb2_buffer_done(&vb->vb.vb2_buf, VB2_BUF_STATE_DONE); vou_dev->active = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list); if (list_is_singular(&vou_dev->buf_list)) { /* Keep cycling while no next buffer is available */ sh_vou_schedule_next(vou_dev, &vou_dev->active->vb); } else { struct sh_vou_buffer *new = list_entry(vou_dev->active->list.next, struct sh_vou_buffer, list); sh_vou_schedule_next(vou_dev, &new->vb); } spin_unlock(&vou_dev->lock); return IRQ_HANDLED; } static int sh_vou_hw_init(struct sh_vou_device *vou_dev) { struct sh_vou_pdata *pdata = vou_dev->pdata; u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29; int i = 100; /* Disable all IRQs */ sh_vou_reg_a_write(vou_dev, VOUIR, 0); /* Reset VOU interfaces - registers unaffected */ sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101); while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101)) udelay(1); if (!i) return -ETIMEDOUT; dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i); if (pdata->flags & SH_VOU_PCLK_FALLING) voucr |= 1 << 28; if (pdata->flags & SH_VOU_HSYNC_LOW) voucr |= 1 << 27; if (pdata->flags & SH_VOU_VSYNC_LOW) voucr |= 1 << 26; sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000); /* Manual register side switching at first */ sh_vou_reg_a_write(vou_dev, VOURCR, 4); /* Default - fixed HSYNC length, can be made configurable is required */ sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000); sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix); return 0; } /* File operations */ static int sh_vou_open(struct file *file) { struct sh_vou_device *vou_dev = video_drvdata(file); int err; if (mutex_lock_interruptible(&vou_dev->fop_lock)) return -ERESTARTSYS; err = v4l2_fh_open(file); if (err) goto done_open; if (v4l2_fh_is_singular_file(file) && vou_dev->status == SH_VOU_INITIALISING) { /* First open */ pm_runtime_get_sync(vou_dev->v4l2_dev.dev); err = sh_vou_hw_init(vou_dev); if (err < 0) { pm_runtime_put(vou_dev->v4l2_dev.dev); v4l2_fh_release(file); } else { vou_dev->status = SH_VOU_IDLE; } } done_open: mutex_unlock(&vou_dev->fop_lock); return err; } static int sh_vou_release(struct file *file) { struct sh_vou_device *vou_dev = video_drvdata(file); bool is_last; mutex_lock(&vou_dev->fop_lock); is_last = v4l2_fh_is_singular_file(file); _vb2_fop_release(file, NULL); if (is_last) { /* Last close */ vou_dev->status = SH_VOU_INITIALISING; sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101); pm_runtime_put(vou_dev->v4l2_dev.dev); } mutex_unlock(&vou_dev->fop_lock); return 0; } /* sh_vou display ioctl operations */ static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = { .vidioc_querycap = sh_vou_querycap, .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out, .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out, .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out, .vidioc_try_fmt_vid_out = sh_vou_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_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_g_output = sh_vou_g_output, .vidioc_s_output = sh_vou_s_output, .vidioc_enum_output = sh_vou_enum_output, .vidioc_s_std = sh_vou_s_std, .vidioc_g_std = sh_vou_g_std, .vidioc_g_selection = sh_vou_g_selection, .vidioc_s_selection = sh_vou_s_selection, .vidioc_log_status = sh_vou_log_status, }; static const struct v4l2_file_operations sh_vou_fops = { .owner = THIS_MODULE, .open = sh_vou_open, .release = sh_vou_release, .unlocked_ioctl = video_ioctl2, .mmap = vb2_fop_mmap, .poll = vb2_fop_poll, .write = vb2_fop_write, }; static const struct video_device sh_vou_video_template = { .name = "sh_vou", .fops = &sh_vou_fops, .ioctl_ops = &sh_vou_ioctl_ops, .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */ .vfl_dir = VFL_DIR_TX, }; static int sh_vou_probe(struct platform_device *pdev) { struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data; struct v4l2_rect *rect; struct v4l2_pix_format *pix; struct i2c_adapter *i2c_adap; struct video_device *vdev; struct sh_vou_device *vou_dev; struct resource *reg_res; struct v4l2_subdev *subdev; struct vb2_queue *q; int irq, ret; reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); if (!vou_pdata || !reg_res || irq <= 0) { dev_err(&pdev->dev, "Insufficient VOU platform information.\n"); return -ENODEV; } vou_dev = devm_kzalloc(&pdev->dev, sizeof(*vou_dev), GFP_KERNEL); if (!vou_dev) return -ENOMEM; INIT_LIST_HEAD(&vou_dev->buf_list); spin_lock_init(&vou_dev->lock); mutex_init(&vou_dev->fop_lock); vou_dev->pdata = vou_pdata; vou_dev->status = SH_VOU_INITIALISING; vou_dev->pix_idx = 1; rect = &vou_dev->rect; pix = &vou_dev->pix; /* Fill in defaults */ vou_dev->std = V4L2_STD_NTSC_M; rect->left = 0; rect->top = 0; rect->width = VOU_MAX_IMAGE_WIDTH; rect->height = 480; pix->width = VOU_MAX_IMAGE_WIDTH; pix->height = 480; pix->pixelformat = V4L2_PIX_FMT_NV16; pix->field = V4L2_FIELD_INTERLACED; pix->bytesperline = VOU_MAX_IMAGE_WIDTH; pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480; pix->colorspace = V4L2_COLORSPACE_SMPTE170M; vou_dev->base = devm_ioremap_resource(&pdev->dev, reg_res); if (IS_ERR(vou_dev->base)) return PTR_ERR(vou_dev->base); ret = devm_request_irq(&pdev->dev, irq, sh_vou_isr, 0, "vou", vou_dev); if (ret < 0) return ret; ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev); if (ret < 0) { dev_err(&pdev->dev, "Error registering v4l2 device\n"); return ret; } vdev = &vou_dev->vdev; *vdev = sh_vou_video_template; if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT) vdev->tvnorms |= V4L2_STD_PAL; vdev->v4l2_dev = &vou_dev->v4l2_dev; vdev->release = video_device_release_empty; vdev->lock = &vou_dev->fop_lock; video_set_drvdata(vdev, vou_dev); /* Initialize the vb2 queue */ q = &vou_dev->queue; q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE; q->drv_priv = vou_dev; q->buf_struct_size = sizeof(struct sh_vou_buffer); q->ops = &sh_vou_qops; q->mem_ops = &vb2_dma_contig_memops; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 2; q->lock = &vou_dev->fop_lock; q->dev = &pdev->dev; ret = vb2_queue_init(q); if (ret) goto ei2cgadap; vdev->queue = q; INIT_LIST_HEAD(&vou_dev->buf_list); pm_runtime_enable(&pdev->dev); pm_runtime_resume(&pdev->dev); i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap); if (!i2c_adap) { ret = -ENODEV; goto ei2cgadap; } ret = sh_vou_hw_init(vou_dev); if (ret < 0) goto ereset; subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, vou_pdata->board_info, NULL); if (!subdev) { ret = -ENOMEM; goto ei2cnd; } ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); if (ret < 0) goto evregdev; return 0; evregdev: ei2cnd: ereset: i2c_put_adapter(i2c_adap); ei2cgadap: pm_runtime_disable(&pdev->dev); v4l2_device_unregister(&vou_dev->v4l2_dev); return ret; } static int sh_vou_remove(struct platform_device *pdev) { struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); struct sh_vou_device *vou_dev = container_of(v4l2_dev, struct sh_vou_device, v4l2_dev); struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, struct v4l2_subdev, list); struct i2c_client *client = v4l2_get_subdevdata(sd); pm_runtime_disable(&pdev->dev); video_unregister_device(&vou_dev->vdev); i2c_put_adapter(client->adapter); v4l2_device_unregister(&vou_dev->v4l2_dev); return 0; } static struct platform_driver __refdata sh_vou = { .remove = sh_vou_remove, .driver = { .name = "sh-vou", }, }; module_platform_driver_probe(sh_vou, sh_vou_probe); MODULE_DESCRIPTION("SuperH VOU driver"); MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); MODULE_LICENSE("GPL v2"); MODULE_VERSION("0.1.0"); MODULE_ALIAS("platform:sh-vou");
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