| From 3fec97c68d4708f5f33190a78712dad95c6f487d Mon Sep 17 00:00:00 2001 |
| From: Vladimir Barinov <vladimir.barinov@cogentembedded.com> |
| Date: Thu, 25 Jul 2013 17:23:10 -0300 |
| Subject: [media] V4L2: soc_camera: Renesas R-Car VIN driver |
| |
| Add Renesas R-Car VIN (Video In) V4L2 driver. |
| Based on the patch by Phil Edworthy <phil.edworthy@renesas.com>. |
| [Sergei: removed deprecated IRQF_DISABLED flag, reordered/renamed 'enum chip_id' |
| values, reordered rcar_vin_id_table[] entries, removed senseless parens from |
| to_buf_list() macro, used ALIGN() macro in rcar_vin_setup(), added {} to the |
| *if* statement and used 'bool' values instead of 0/1 where necessary, removed |
| unused macros, done some reformatting and clarified some comments.] |
| |
| Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com> |
| Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> |
| Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> |
| (cherry picked from commit 73135e969970304a474c18c9f732fa3e36d88514) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| |
| Conflicts: |
| drivers/media/platform/soc_camera/Makefile |
| --- |
| drivers/media/platform/soc_camera/Kconfig | 8 + |
| drivers/media/platform/soc_camera/Makefile | 3 +- |
| drivers/media/platform/soc_camera/rcar_vin.c | 1486 ++++++++++++++++++++++++++ |
| include/linux/platform_data/camera-rcar.h | 25 + |
| 4 files changed, 1520 insertions(+), 2 deletions(-) |
| create mode 100644 drivers/media/platform/soc_camera/rcar_vin.c |
| create mode 100644 include/linux/platform_data/camera-rcar.h |
| |
| diff --git a/drivers/media/platform/soc_camera/Kconfig b/drivers/media/platform/soc_camera/Kconfig |
| index 99f1952d..519b23fd 100644 |
| --- a/drivers/media/platform/soc_camera/Kconfig |
| +++ b/drivers/media/platform/soc_camera/Kconfig |
| @@ -48,6 +48,14 @@ config VIDEO_PXA27x |
| ---help--- |
| This is a v4l2 driver for the PXA27x Quick Capture Interface |
| |
| +config VIDEO_RCAR_VIN |
| + tristate "R-Car Video Input (VIN) support" |
| + depends on VIDEO_DEV && SOC_CAMERA |
| + select VIDEOBUF2_DMA_CONTIG |
| + select SOC_CAMERA_SCALE_CROP |
| + ---help--- |
| + This is a v4l2 driver for the R-Car VIN Interface |
| + |
| config VIDEO_SH_MOBILE_CSI2 |
| tristate "SuperH Mobile MIPI CSI-2 Interface driver" |
| depends on VIDEO_DEV && SOC_CAMERA && HAVE_CLK |
| diff --git a/drivers/media/platform/soc_camera/Makefile b/drivers/media/platform/soc_camera/Makefile |
| index 7ff714c6..8aed26d7 100644 |
| --- a/drivers/media/platform/soc_camera/Makefile |
| +++ b/drivers/media/platform/soc_camera/Makefile |
| @@ -14,5 +14,4 @@ obj-$(CONFIG_VIDEO_OMAP1) += omap1_camera.o |
| obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o |
| obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o |
| obj-$(CONFIG_VIDEO_SH_MOBILE_CSI2) += sh_mobile_csi2.o |
| - |
| -ccflags-y += -I$(srctree)/drivers/media/i2c/soc_camera |
| +obj-$(CONFIG_VIDEO_RCAR_VIN) += rcar_vin.o |
| diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c |
| new file mode 100644 |
| index 00000000..d02a7e0b |
| --- /dev/null |
| +++ b/drivers/media/platform/soc_camera/rcar_vin.c |
| @@ -0,0 +1,1486 @@ |
| +/* |
| + * SoC-camera host driver for Renesas R-Car VIN unit |
| + * |
| + * Copyright (C) 2011-2013 Renesas Solutions Corp. |
| + * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com> |
| + * |
| + * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c" |
| + * |
| + * Copyright (C) 2008 Magnus Damm |
| + * |
| + * This program is free software; you can redistribute it and/or modify it |
| + * under the terms of the GNU General Public License as published by the |
| + * Free Software Foundation; either version 2 of the License, or (at your |
| + * option) any later version. |
| + */ |
| + |
| +#include <linux/delay.h> |
| +#include <linux/interrupt.h> |
| +#include <linux/kernel.h> |
| +#include <linux/module.h> |
| +#include <linux/platform_data/camera-rcar.h> |
| +#include <linux/platform_device.h> |
| +#include <linux/pm_runtime.h> |
| +#include <linux/slab.h> |
| +#include <linux/videodev2.h> |
| + |
| +#include <media/soc_camera.h> |
| +#include <media/soc_mediabus.h> |
| +#include <media/v4l2-common.h> |
| +#include <media/v4l2-dev.h> |
| +#include <media/v4l2-device.h> |
| +#include <media/v4l2-mediabus.h> |
| +#include <media/v4l2-subdev.h> |
| +#include <media/videobuf2-dma-contig.h> |
| + |
| +#include "soc_scale_crop.h" |
| + |
| +#define DRV_NAME "rcar_vin" |
| + |
| +/* Register offsets for R-Car VIN */ |
| +#define VNMC_REG 0x00 /* Video n Main Control Register */ |
| +#define VNMS_REG 0x04 /* Video n Module Status Register */ |
| +#define VNFC_REG 0x08 /* Video n Frame Capture Register */ |
| +#define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */ |
| +#define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */ |
| +#define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */ |
| +#define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */ |
| +#define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */ |
| +#define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */ |
| +#define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */ |
| +#define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */ |
| +#define VNIS_REG 0x2C /* Video n Image Stride Register */ |
| +#define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */ |
| +#define VNIE_REG 0x40 /* Video n Interrupt Enable Register */ |
| +#define VNINTS_REG 0x44 /* Video n Interrupt Status Register */ |
| +#define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */ |
| +#define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */ |
| +#define VNYS_REG 0x50 /* Video n Y Scale Register */ |
| +#define VNXS_REG 0x54 /* Video n X Scale Register */ |
| +#define VNDMR_REG 0x58 /* Video n Data Mode Register */ |
| +#define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */ |
| +#define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */ |
| + |
| +/* Register bit fields for R-Car VIN */ |
| +/* Video n Main Control Register bits */ |
| +#define VNMC_FOC (1 << 21) |
| +#define VNMC_YCAL (1 << 19) |
| +#define VNMC_INF_YUV8_BT656 (0 << 16) |
| +#define VNMC_INF_YUV8_BT601 (1 << 16) |
| +#define VNMC_INF_YUV16 (5 << 16) |
| +#define VNMC_VUP (1 << 10) |
| +#define VNMC_IM_ODD (0 << 3) |
| +#define VNMC_IM_ODD_EVEN (1 << 3) |
| +#define VNMC_IM_EVEN (2 << 3) |
| +#define VNMC_IM_FULL (3 << 3) |
| +#define VNMC_BPS (1 << 1) |
| +#define VNMC_ME (1 << 0) |
| + |
| +/* Video n Module Status Register bits */ |
| +#define VNMS_FBS_MASK (3 << 3) |
| +#define VNMS_FBS_SHIFT 3 |
| +#define VNMS_AV (1 << 1) |
| +#define VNMS_CA (1 << 0) |
| + |
| +/* Video n Frame Capture Register bits */ |
| +#define VNFC_C_FRAME (1 << 1) |
| +#define VNFC_S_FRAME (1 << 0) |
| + |
| +/* Video n Interrupt Enable Register bits */ |
| +#define VNIE_FIE (1 << 4) |
| +#define VNIE_EFE (1 << 1) |
| + |
| +/* Video n Data Mode Register bits */ |
| +#define VNDMR_EXRGB (1 << 8) |
| +#define VNDMR_BPSM (1 << 4) |
| +#define VNDMR_DTMD_YCSEP (1 << 1) |
| +#define VNDMR_DTMD_ARGB1555 (1 << 0) |
| + |
| +/* Video n Data Mode Register 2 bits */ |
| +#define VNDMR2_VPS (1 << 30) |
| +#define VNDMR2_HPS (1 << 29) |
| +#define VNDMR2_FTEV (1 << 17) |
| + |
| +#define VIN_MAX_WIDTH 2048 |
| +#define VIN_MAX_HEIGHT 2048 |
| + |
| +enum chip_id { |
| + RCAR_H1, |
| + RCAR_M1, |
| + RCAR_E1, |
| +}; |
| + |
| +enum rcar_vin_state { |
| + STOPPED = 0, |
| + RUNNING, |
| + STOPPING, |
| +}; |
| + |
| +struct rcar_vin_priv { |
| + void __iomem *base; |
| + spinlock_t lock; |
| + int sequence; |
| + /* State of the VIN module in capturing mode */ |
| + enum rcar_vin_state state; |
| + struct rcar_vin_platform_data *pdata; |
| + struct soc_camera_host ici; |
| + struct list_head capture; |
| +#define MAX_BUFFER_NUM 3 |
| + struct vb2_buffer *queue_buf[MAX_BUFFER_NUM]; |
| + struct vb2_alloc_ctx *alloc_ctx; |
| + enum v4l2_field field; |
| + unsigned int vb_count; |
| + unsigned int nr_hw_slots; |
| + bool request_to_stop; |
| + struct completion capture_stop; |
| + enum chip_id chip; |
| +}; |
| + |
| +#define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM) |
| + |
| +struct rcar_vin_buffer { |
| + struct vb2_buffer vb; |
| + struct list_head list; |
| +}; |
| + |
| +#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \ |
| + struct rcar_vin_buffer, \ |
| + vb)->list) |
| + |
| +struct rcar_vin_cam { |
| + /* VIN offsets within the camera output, before the VIN scaler */ |
| + unsigned int vin_left; |
| + unsigned int vin_top; |
| + /* Client output, as seen by the VIN */ |
| + unsigned int width; |
| + unsigned int height; |
| + /* |
| + * User window from S_CROP / G_CROP, produced by client cropping and |
| + * scaling, VIN scaling and VIN cropping, mapped back onto the client |
| + * input window |
| + */ |
| + struct v4l2_rect subrect; |
| + /* Camera cropping rectangle */ |
| + struct v4l2_rect rect; |
| + const struct soc_mbus_pixelfmt *extra_fmt; |
| +}; |
| + |
| +/* |
| + * .queue_setup() is called to check whether the driver can accept the requested |
| + * number of buffers and to fill in plane sizes for the current frame format if |
| + * required |
| + */ |
| +static int rcar_vin_videobuf_setup(struct vb2_queue *vq, |
| + const struct v4l2_format *fmt, |
| + unsigned int *count, |
| + unsigned int *num_planes, |
| + unsigned int sizes[], void *alloc_ctxs[]) |
| +{ |
| + struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + |
| + if (fmt) { |
| + const struct soc_camera_format_xlate *xlate; |
| + unsigned int bytes_per_line; |
| + int ret; |
| + |
| + xlate = soc_camera_xlate_by_fourcc(icd, |
| + fmt->fmt.pix.pixelformat); |
| + if (!xlate) |
| + return -EINVAL; |
| + ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
| + xlate->host_fmt); |
| + if (ret < 0) |
| + return ret; |
| + |
| + bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
| + |
| + ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, |
| + fmt->fmt.pix.height); |
| + if (ret < 0) |
| + return ret; |
| + |
| + sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); |
| + } else { |
| + /* Called from VIDIOC_REQBUFS or in compatibility mode */ |
| + sizes[0] = icd->sizeimage; |
| + } |
| + |
| + alloc_ctxs[0] = priv->alloc_ctx; |
| + |
| + if (!vq->num_buffers) |
| + priv->sequence = 0; |
| + |
| + if (!*count) |
| + *count = 2; |
| + priv->vb_count = *count; |
| + |
| + *num_planes = 1; |
| + |
| + /* Number of hardware slots */ |
| + if (is_continuous_transfer(priv)) |
| + priv->nr_hw_slots = MAX_BUFFER_NUM; |
| + else |
| + priv->nr_hw_slots = 1; |
| + |
| + dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
| + |
| + return 0; |
| +} |
| + |
| +static int rcar_vin_setup(struct rcar_vin_priv *priv) |
| +{ |
| + struct soc_camera_device *icd = priv->ici.icd; |
| + struct rcar_vin_cam *cam = icd->host_priv; |
| + u32 vnmc, dmr, interrupts; |
| + bool progressive = false, output_is_yuv = false; |
| + |
| + switch (priv->field) { |
| + case V4L2_FIELD_TOP: |
| + vnmc = VNMC_IM_ODD; |
| + break; |
| + case V4L2_FIELD_BOTTOM: |
| + vnmc = VNMC_IM_EVEN; |
| + break; |
| + case V4L2_FIELD_INTERLACED: |
| + case V4L2_FIELD_INTERLACED_TB: |
| + vnmc = VNMC_IM_FULL; |
| + break; |
| + case V4L2_FIELD_INTERLACED_BT: |
| + vnmc = VNMC_IM_FULL | VNMC_FOC; |
| + break; |
| + case V4L2_FIELD_NONE: |
| + if (is_continuous_transfer(priv)) { |
| + vnmc = VNMC_IM_ODD_EVEN; |
| + progressive = true; |
| + } else { |
| + vnmc = VNMC_IM_ODD; |
| + } |
| + break; |
| + default: |
| + vnmc = VNMC_IM_ODD; |
| + break; |
| + } |
| + |
| + /* input interface */ |
| + switch (icd->current_fmt->code) { |
| + case V4L2_MBUS_FMT_YUYV8_1X16: |
| + /* BT.601/BT.1358 16bit YCbCr422 */ |
| + vnmc |= VNMC_INF_YUV16; |
| + break; |
| + case V4L2_MBUS_FMT_YUYV8_2X8: |
| + /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */ |
| + vnmc |= priv->pdata->flags & RCAR_VIN_BT656 ? |
| + VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601; |
| + default: |
| + break; |
| + } |
| + |
| + /* output format */ |
| + switch (icd->current_fmt->host_fmt->fourcc) { |
| + case V4L2_PIX_FMT_NV16: |
| + iowrite32(ALIGN(cam->width * cam->height, 0x80), |
| + priv->base + VNUVAOF_REG); |
| + dmr = VNDMR_DTMD_YCSEP; |
| + output_is_yuv = true; |
| + break; |
| + case V4L2_PIX_FMT_YUYV: |
| + dmr = VNDMR_BPSM; |
| + output_is_yuv = true; |
| + break; |
| + case V4L2_PIX_FMT_UYVY: |
| + dmr = 0; |
| + output_is_yuv = true; |
| + break; |
| + case V4L2_PIX_FMT_RGB555X: |
| + dmr = VNDMR_DTMD_ARGB1555; |
| + break; |
| + case V4L2_PIX_FMT_RGB565: |
| + dmr = 0; |
| + break; |
| + case V4L2_PIX_FMT_RGB32: |
| + if (priv->chip == RCAR_H1 || priv->chip == RCAR_E1) { |
| + dmr = VNDMR_EXRGB; |
| + break; |
| + } |
| + default: |
| + dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n", |
| + icd->current_fmt->host_fmt->fourcc); |
| + return -EINVAL; |
| + } |
| + |
| + /* Always update on field change */ |
| + vnmc |= VNMC_VUP; |
| + |
| + /* If input and output use the same colorspace, use bypass mode */ |
| + if (output_is_yuv) |
| + vnmc |= VNMC_BPS; |
| + |
| + /* progressive or interlaced mode */ |
| + interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE; |
| + |
| + /* ack interrupts */ |
| + iowrite32(interrupts, priv->base + VNINTS_REG); |
| + /* enable interrupts */ |
| + iowrite32(interrupts, priv->base + VNIE_REG); |
| + /* start capturing */ |
| + iowrite32(dmr, priv->base + VNDMR_REG); |
| + iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG); |
| + |
| + return 0; |
| +} |
| + |
| +static void rcar_vin_capture(struct rcar_vin_priv *priv) |
| +{ |
| + if (is_continuous_transfer(priv)) |
| + /* Continuous Frame Capture Mode */ |
| + iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG); |
| + else |
| + /* Single Frame Capture Mode */ |
| + iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG); |
| +} |
| + |
| +static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv) |
| +{ |
| + priv->state = STOPPING; |
| + |
| + /* set continuous & single transfer off */ |
| + iowrite32(0, priv->base + VNFC_REG); |
| + /* disable capture (release DMA buffer), reset */ |
| + iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, |
| + priv->base + VNMC_REG); |
| + |
| + /* update the status if stopped already */ |
| + if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA)) |
| + priv->state = STOPPED; |
| +} |
| + |
| +static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv) |
| +{ |
| + int slot; |
| + |
| + for (slot = 0; slot < priv->nr_hw_slots; slot++) |
| + if (priv->queue_buf[slot] == NULL) |
| + return slot; |
| + |
| + return -1; |
| +} |
| + |
| +static int rcar_vin_hw_ready(struct rcar_vin_priv *priv) |
| +{ |
| + /* Ensure all HW slots are filled */ |
| + return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0; |
| +} |
| + |
| +/* Moves a buffer from the queue to the HW slots */ |
| +static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv) |
| +{ |
| + struct vb2_buffer *vb; |
| + dma_addr_t phys_addr_top; |
| + int slot; |
| + |
| + if (list_empty(&priv->capture)) |
| + return 0; |
| + |
| + /* Find a free HW slot */ |
| + slot = rcar_vin_get_free_hw_slot(priv); |
| + if (slot < 0) |
| + return 0; |
| + |
| + vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb; |
| + list_del_init(to_buf_list(vb)); |
| + priv->queue_buf[slot] = vb; |
| + phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0); |
| + iowrite32(phys_addr_top, priv->base + VNMB_REG(slot)); |
| + |
| + return 1; |
| +} |
| + |
| +static void rcar_vin_videobuf_queue(struct vb2_buffer *vb) |
| +{ |
| + struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + unsigned long size; |
| + |
| + size = icd->sizeimage; |
| + |
| + if (vb2_plane_size(vb, 0) < size) { |
| + dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", |
| + vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); |
| + goto error; |
| + } |
| + |
| + vb2_set_plane_payload(vb, 0, size); |
| + |
| + dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| + vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
| + |
| + spin_lock_irq(&priv->lock); |
| + |
| + list_add_tail(to_buf_list(vb), &priv->capture); |
| + rcar_vin_fill_hw_slot(priv); |
| + |
| + /* If we weren't running, and have enough buffers, start capturing! */ |
| + if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) { |
| + if (rcar_vin_setup(priv)) { |
| + /* Submit error */ |
| + list_del_init(to_buf_list(vb)); |
| + spin_unlock_irq(&priv->lock); |
| + goto error; |
| + } |
| + priv->request_to_stop = false; |
| + init_completion(&priv->capture_stop); |
| + priv->state = RUNNING; |
| + rcar_vin_capture(priv); |
| + } |
| + |
| + spin_unlock_irq(&priv->lock); |
| + |
| + return; |
| + |
| +error: |
| + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| +} |
| + |
| +static void rcar_vin_videobuf_release(struct vb2_buffer *vb) |
| +{ |
| + struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + unsigned int i; |
| + int buf_in_use = 0; |
| + |
| + spin_lock_irq(&priv->lock); |
| + |
| + /* Is the buffer in use by the VIN hardware? */ |
| + for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| + if (priv->queue_buf[i] == vb) { |
| + buf_in_use = 1; |
| + break; |
| + } |
| + } |
| + |
| + if (buf_in_use) { |
| + while (priv->state != STOPPED) { |
| + |
| + /* issue stop if running */ |
| + if (priv->state == RUNNING) |
| + rcar_vin_request_capture_stop(priv); |
| + |
| + /* wait until capturing has been stopped */ |
| + if (priv->state == STOPPING) { |
| + priv->request_to_stop = true; |
| + spin_unlock_irq(&priv->lock); |
| + wait_for_completion(&priv->capture_stop); |
| + spin_lock_irq(&priv->lock); |
| + } |
| + } |
| + /* |
| + * Capturing has now stopped. The buffer we have been asked |
| + * to release could be any of the current buffers in use, so |
| + * release all buffers that are in use by HW |
| + */ |
| + for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| + if (priv->queue_buf[i]) { |
| + vb2_buffer_done(priv->queue_buf[i], |
| + VB2_BUF_STATE_ERROR); |
| + priv->queue_buf[i] = NULL; |
| + } |
| + } |
| + } else { |
| + list_del_init(to_buf_list(vb)); |
| + } |
| + |
| + spin_unlock_irq(&priv->lock); |
| +} |
| + |
| +static int rcar_vin_videobuf_init(struct vb2_buffer *vb) |
| +{ |
| + INIT_LIST_HEAD(to_buf_list(vb)); |
| + return 0; |
| +} |
| + |
| +static int rcar_vin_stop_streaming(struct vb2_queue *vq) |
| +{ |
| + struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + struct list_head *buf_head, *tmp; |
| + |
| + spin_lock_irq(&priv->lock); |
| + list_for_each_safe(buf_head, tmp, &priv->capture) |
| + list_del_init(buf_head); |
| + spin_unlock_irq(&priv->lock); |
| + |
| + return 0; |
| +} |
| + |
| +static struct vb2_ops rcar_vin_vb2_ops = { |
| + .queue_setup = rcar_vin_videobuf_setup, |
| + .buf_init = rcar_vin_videobuf_init, |
| + .buf_cleanup = rcar_vin_videobuf_release, |
| + .buf_queue = rcar_vin_videobuf_queue, |
| + .stop_streaming = rcar_vin_stop_streaming, |
| + .wait_prepare = soc_camera_unlock, |
| + .wait_finish = soc_camera_lock, |
| +}; |
| + |
| +static irqreturn_t rcar_vin_irq(int irq, void *data) |
| +{ |
| + struct rcar_vin_priv *priv = data; |
| + u32 int_status; |
| + bool can_run = false, hw_stopped; |
| + int slot; |
| + unsigned int handled = 0; |
| + |
| + spin_lock(&priv->lock); |
| + |
| + int_status = ioread32(priv->base + VNINTS_REG); |
| + if (!int_status) |
| + goto done; |
| + /* ack interrupts */ |
| + iowrite32(int_status, priv->base + VNINTS_REG); |
| + handled = 1; |
| + |
| + /* nothing to do if capture status is 'STOPPED' */ |
| + if (priv->state == STOPPED) |
| + goto done; |
| + |
| + hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA); |
| + |
| + if (!priv->request_to_stop) { |
| + if (is_continuous_transfer(priv)) |
| + slot = (ioread32(priv->base + VNMS_REG) & |
| + VNMS_FBS_MASK) >> VNMS_FBS_SHIFT; |
| + else |
| + slot = 0; |
| + |
| + priv->queue_buf[slot]->v4l2_buf.field = priv->field; |
| + priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++; |
| + do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp); |
| + vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE); |
| + priv->queue_buf[slot] = NULL; |
| + |
| + if (priv->state != STOPPING) |
| + can_run = rcar_vin_fill_hw_slot(priv); |
| + |
| + if (hw_stopped || !can_run) { |
| + priv->state = STOPPED; |
| + } else if (is_continuous_transfer(priv) && |
| + list_empty(&priv->capture) && |
| + priv->state == RUNNING) { |
| + /* |
| + * The continuous capturing requires an explicit stop |
| + * operation when there is no buffer to be set into |
| + * the VnMBm registers. |
| + */ |
| + rcar_vin_request_capture_stop(priv); |
| + } else { |
| + rcar_vin_capture(priv); |
| + } |
| + |
| + } else if (hw_stopped) { |
| + priv->state = STOPPED; |
| + priv->request_to_stop = false; |
| + complete(&priv->capture_stop); |
| + } |
| + |
| +done: |
| + spin_unlock(&priv->lock); |
| + |
| + return IRQ_RETVAL(handled); |
| +} |
| + |
| +static int rcar_vin_add_device(struct soc_camera_device *icd) |
| +{ |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + int i; |
| + |
| + for (i = 0; i < MAX_BUFFER_NUM; i++) |
| + priv->queue_buf[i] = NULL; |
| + |
| + pm_runtime_get_sync(ici->v4l2_dev.dev); |
| + |
| + dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n", |
| + icd->devnum); |
| + |
| + return 0; |
| +} |
| + |
| +static void rcar_vin_remove_device(struct soc_camera_device *icd) |
| +{ |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + struct vb2_buffer *vb; |
| + int i; |
| + |
| + /* disable capture, disable interrupts */ |
| + iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, |
| + priv->base + VNMC_REG); |
| + iowrite32(0, priv->base + VNIE_REG); |
| + |
| + priv->state = STOPPED; |
| + priv->request_to_stop = false; |
| + |
| + /* make sure active buffer is cancelled */ |
| + spin_lock_irq(&priv->lock); |
| + for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| + vb = priv->queue_buf[i]; |
| + if (vb) { |
| + list_del_init(to_buf_list(vb)); |
| + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| + } |
| + } |
| + spin_unlock_irq(&priv->lock); |
| + |
| + pm_runtime_put(ici->v4l2_dev.dev); |
| + |
| + dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n", |
| + icd->devnum); |
| +} |
| + |
| +/* Called with .host_lock held */ |
| +static int rcar_vin_clock_start(struct soc_camera_host *ici) |
| +{ |
| + /* VIN does not have "mclk" */ |
| + return 0; |
| +} |
| + |
| +/* Called with .host_lock held */ |
| +static void rcar_vin_clock_stop(struct soc_camera_host *ici) |
| +{ |
| + /* VIN does not have "mclk" */ |
| +} |
| + |
| +/* rect is guaranteed to not exceed the scaled camera rectangle */ |
| +static int rcar_vin_set_rect(struct soc_camera_device *icd) |
| +{ |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_cam *cam = icd->host_priv; |
| + struct rcar_vin_priv *priv = ici->priv; |
| + unsigned int left_offset, top_offset; |
| + unsigned char dsize = 0; |
| + struct v4l2_rect *cam_subrect = &cam->subrect; |
| + |
| + dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n", |
| + icd->user_width, icd->user_height, cam->vin_left, cam->vin_top); |
| + |
| + left_offset = cam->vin_left; |
| + top_offset = cam->vin_top; |
| + |
| + if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 && |
| + priv->chip == RCAR_E1) |
| + dsize = 1; |
| + |
| + dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n", |
| + cam->width, cam->height, cam->vin_left, cam->vin_top); |
| + dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n", |
| + cam_subrect->width, cam_subrect->height, |
| + cam_subrect->left, cam_subrect->top); |
| + |
| + /* Set Start/End Pixel/Line Pre-Clip */ |
| + iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG); |
| + iowrite32((left_offset + cam->width - 1) << dsize, |
| + priv->base + VNEPPRC_REG); |
| + switch (priv->field) { |
| + case V4L2_FIELD_INTERLACED: |
| + case V4L2_FIELD_INTERLACED_TB: |
| + case V4L2_FIELD_INTERLACED_BT: |
| + iowrite32(top_offset / 2, priv->base + VNSLPRC_REG); |
| + iowrite32((top_offset + cam->height) / 2 - 1, |
| + priv->base + VNELPRC_REG); |
| + break; |
| + default: |
| + iowrite32(top_offset, priv->base + VNSLPRC_REG); |
| + iowrite32(top_offset + cam->height - 1, |
| + priv->base + VNELPRC_REG); |
| + break; |
| + } |
| + |
| + /* Set Start/End Pixel/Line Post-Clip */ |
| + iowrite32(0, priv->base + VNSPPOC_REG); |
| + iowrite32(0, priv->base + VNSLPOC_REG); |
| + iowrite32((cam_subrect->width - 1) << dsize, priv->base + VNEPPOC_REG); |
| + switch (priv->field) { |
| + case V4L2_FIELD_INTERLACED: |
| + case V4L2_FIELD_INTERLACED_TB: |
| + case V4L2_FIELD_INTERLACED_BT: |
| + iowrite32(cam_subrect->height / 2 - 1, |
| + priv->base + VNELPOC_REG); |
| + break; |
| + default: |
| + iowrite32(cam_subrect->height - 1, priv->base + VNELPOC_REG); |
| + break; |
| + } |
| + |
| + iowrite32(ALIGN(cam->width, 0x10), priv->base + VNIS_REG); |
| + |
| + return 0; |
| +} |
| + |
| +static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc) |
| +{ |
| + *vnmc = ioread32(priv->base + VNMC_REG); |
| + /* module disable */ |
| + iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG); |
| +} |
| + |
| +static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc) |
| +{ |
| + unsigned long timeout = jiffies + 10 * HZ; |
| + |
| + /* |
| + * Wait until the end of the current frame. It can take a long time, |
| + * but if it has been aborted by a MRST1 reset, it should exit sooner. |
| + */ |
| + while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) && |
| + time_before(jiffies, timeout)) |
| + msleep(1); |
| + |
| + if (time_after(jiffies, timeout)) { |
| + dev_err(priv->ici.v4l2_dev.dev, |
| + "Timeout waiting for frame end! Interface problem?\n"); |
| + return; |
| + } |
| + |
| + iowrite32(vnmc, priv->base + VNMC_REG); |
| +} |
| + |
| +#define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \ |
| + V4L2_MBUS_PCLK_SAMPLE_RISING | \ |
| + V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ |
| + V4L2_MBUS_HSYNC_ACTIVE_LOW | \ |
| + V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ |
| + V4L2_MBUS_VSYNC_ACTIVE_LOW | \ |
| + V4L2_MBUS_DATA_ACTIVE_HIGH) |
| + |
| +static int rcar_vin_set_bus_param(struct soc_camera_device *icd) |
| +{ |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct v4l2_mbus_config cfg; |
| + unsigned long common_flags; |
| + u32 vnmc; |
| + u32 val; |
| + int ret; |
| + |
| + capture_stop_preserve(priv, &vnmc); |
| + |
| + ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| + if (!ret) { |
| + common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); |
| + if (!common_flags) { |
| + dev_warn(icd->parent, |
| + "MBUS flags incompatible: camera 0x%x, host 0x%x\n", |
| + cfg.flags, VIN_MBUS_FLAGS); |
| + return -EINVAL; |
| + } |
| + } else if (ret != -ENOIOCTLCMD) { |
| + return ret; |
| + } else { |
| + common_flags = VIN_MBUS_FLAGS; |
| + } |
| + |
| + /* Make choises, based on platform preferences */ |
| + if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
| + (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { |
| + if (priv->pdata->flags & RCAR_VIN_HSYNC_ACTIVE_LOW) |
| + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
| + else |
| + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
| + } |
| + |
| + if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
| + (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { |
| + if (priv->pdata->flags & RCAR_VIN_VSYNC_ACTIVE_LOW) |
| + common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
| + else |
| + common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
| + } |
| + |
| + cfg.flags = common_flags; |
| + ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); |
| + if (ret < 0 && ret != -ENOIOCTLCMD) |
| + return ret; |
| + |
| + val = priv->field == V4L2_FIELD_NONE ? VNDMR2_FTEV : 0; |
| + if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) |
| + val |= VNDMR2_VPS; |
| + if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) |
| + val |= VNDMR2_HPS; |
| + iowrite32(val, priv->base + VNDMR2_REG); |
| + |
| + ret = rcar_vin_set_rect(icd); |
| + if (ret < 0) |
| + return ret; |
| + |
| + capture_restore(priv, vnmc); |
| + |
| + return 0; |
| +} |
| + |
| +static int rcar_vin_try_bus_param(struct soc_camera_device *icd, |
| + unsigned char buswidth) |
| +{ |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct v4l2_mbus_config cfg; |
| + int ret; |
| + |
| + ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| + if (ret == -ENOIOCTLCMD) |
| + return 0; |
| + else if (ret) |
| + return ret; |
| + |
| + if (buswidth > 24) |
| + return -EINVAL; |
| + |
| + /* check is there common mbus flags */ |
| + ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); |
| + if (ret) |
| + return 0; |
| + |
| + dev_warn(icd->parent, |
| + "MBUS flags incompatible: camera 0x%x, host 0x%x\n", |
| + cfg.flags, VIN_MBUS_FLAGS); |
| + |
| + return -EINVAL; |
| +} |
| + |
| +static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
| +{ |
| + return fmt->packing == SOC_MBUS_PACKING_NONE || |
| + (fmt->bits_per_sample > 8 && |
| + fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
| +} |
| + |
| +static const struct soc_mbus_pixelfmt rcar_vin_formats[] = { |
| + { |
| + .fourcc = V4L2_PIX_FMT_NV16, |
| + .name = "NV16", |
| + .bits_per_sample = 8, |
| + .packing = SOC_MBUS_PACKING_2X8_PADHI, |
| + .order = SOC_MBUS_ORDER_LE, |
| + .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
| + }, |
| + { |
| + .fourcc = V4L2_PIX_FMT_UYVY, |
| + .name = "UYVY", |
| + .bits_per_sample = 16, |
| + .packing = SOC_MBUS_PACKING_NONE, |
| + .order = SOC_MBUS_ORDER_LE, |
| + .layout = SOC_MBUS_LAYOUT_PACKED, |
| + }, |
| + { |
| + .fourcc = V4L2_PIX_FMT_RGB565, |
| + .name = "RGB565", |
| + .bits_per_sample = 16, |
| + .packing = SOC_MBUS_PACKING_NONE, |
| + .order = SOC_MBUS_ORDER_LE, |
| + .layout = SOC_MBUS_LAYOUT_PACKED, |
| + }, |
| + { |
| + .fourcc = V4L2_PIX_FMT_RGB555X, |
| + .name = "ARGB1555", |
| + .bits_per_sample = 16, |
| + .packing = SOC_MBUS_PACKING_NONE, |
| + .order = SOC_MBUS_ORDER_LE, |
| + .layout = SOC_MBUS_LAYOUT_PACKED, |
| + }, |
| + { |
| + .fourcc = V4L2_PIX_FMT_RGB32, |
| + .name = "RGB888", |
| + .bits_per_sample = 32, |
| + .packing = SOC_MBUS_PACKING_NONE, |
| + .order = SOC_MBUS_ORDER_LE, |
| + .layout = SOC_MBUS_LAYOUT_PACKED, |
| + }, |
| +}; |
| + |
| +static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx, |
| + struct soc_camera_format_xlate *xlate) |
| +{ |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct device *dev = icd->parent; |
| + int ret, k, n; |
| + int formats = 0; |
| + struct rcar_vin_cam *cam; |
| + enum v4l2_mbus_pixelcode code; |
| + const struct soc_mbus_pixelfmt *fmt; |
| + |
| + ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| + if (ret < 0) |
| + return 0; |
| + |
| + fmt = soc_mbus_get_fmtdesc(code); |
| + if (!fmt) { |
| + dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
| + return 0; |
| + } |
| + |
| + ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample); |
| + if (ret < 0) |
| + return 0; |
| + |
| + if (!icd->host_priv) { |
| + struct v4l2_mbus_framefmt mf; |
| + struct v4l2_rect rect; |
| + struct device *dev = icd->parent; |
| + int shift; |
| + |
| + ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| + if (ret < 0) |
| + return ret; |
| + |
| + /* Cache current client geometry */ |
| + ret = soc_camera_client_g_rect(sd, &rect); |
| + if (ret == -ENOIOCTLCMD) { |
| + /* Sensor driver doesn't support cropping */ |
| + rect.left = 0; |
| + rect.top = 0; |
| + rect.width = mf.width; |
| + rect.height = mf.height; |
| + } else if (ret < 0) { |
| + return ret; |
| + } |
| + |
| + /* |
| + * If sensor proposes too large format then try smaller ones: |
| + * 1280x960, 640x480, 320x240 |
| + */ |
| + for (shift = 0; shift < 3; shift++) { |
| + if (mf.width <= VIN_MAX_WIDTH && |
| + mf.height <= VIN_MAX_HEIGHT) |
| + break; |
| + |
| + mf.width = 1280 >> shift; |
| + mf.height = 960 >> shift; |
| + ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| + soc_camera_grp_id(icd), |
| + video, s_mbus_fmt, |
| + &mf); |
| + if (ret < 0) |
| + return ret; |
| + } |
| + |
| + if (shift == 3) { |
| + dev_err(dev, |
| + "Failed to configure the client below %ux%x\n", |
| + mf.width, mf.height); |
| + return -EIO; |
| + } |
| + |
| + dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
| + |
| + cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| + if (!cam) |
| + return -ENOMEM; |
| + /* |
| + * We are called with current camera crop, |
| + * initialise subrect with it |
| + */ |
| + cam->rect = rect; |
| + cam->subrect = rect; |
| + cam->width = mf.width; |
| + cam->height = mf.height; |
| + |
| + icd->host_priv = cam; |
| + } else { |
| + cam = icd->host_priv; |
| + } |
| + |
| + /* Beginning of a pass */ |
| + if (!idx) |
| + cam->extra_fmt = NULL; |
| + |
| + switch (code) { |
| + case V4L2_MBUS_FMT_YUYV8_1X16: |
| + case V4L2_MBUS_FMT_YUYV8_2X8: |
| + if (cam->extra_fmt) |
| + break; |
| + |
| + /* Add all our formats that can be generated by VIN */ |
| + cam->extra_fmt = rcar_vin_formats; |
| + |
| + n = ARRAY_SIZE(rcar_vin_formats); |
| + formats += n; |
| + for (k = 0; xlate && k < n; k++, xlate++) { |
| + xlate->host_fmt = &rcar_vin_formats[k]; |
| + xlate->code = code; |
| + dev_dbg(dev, "Providing format %s using code %d\n", |
| + rcar_vin_formats[k].name, code); |
| + } |
| + break; |
| + default: |
| + if (!rcar_vin_packing_supported(fmt)) |
| + return 0; |
| + |
| + dev_dbg(dev, "Providing format %s in pass-through mode\n", |
| + fmt->name); |
| + break; |
| + } |
| + |
| + /* Generic pass-through */ |
| + formats++; |
| + if (xlate) { |
| + xlate->host_fmt = fmt; |
| + xlate->code = code; |
| + xlate++; |
| + } |
| + |
| + return formats; |
| +} |
| + |
| +static void rcar_vin_put_formats(struct soc_camera_device *icd) |
| +{ |
| + kfree(icd->host_priv); |
| + icd->host_priv = NULL; |
| +} |
| + |
| +static int rcar_vin_set_crop(struct soc_camera_device *icd, |
| + const struct v4l2_crop *a) |
| +{ |
| + struct v4l2_crop a_writable = *a; |
| + const struct v4l2_rect *rect = &a_writable.c; |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + struct v4l2_crop cam_crop; |
| + struct rcar_vin_cam *cam = icd->host_priv; |
| + struct v4l2_rect *cam_rect = &cam_crop.c; |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct device *dev = icd->parent; |
| + struct v4l2_mbus_framefmt mf; |
| + u32 vnmc; |
| + int ret, i; |
| + |
| + dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
| + rect->left, rect->top); |
| + |
| + /* During camera cropping its output window can change too, stop VIN */ |
| + capture_stop_preserve(priv, &vnmc); |
| + dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc); |
| + |
| + /* Apply iterative camera S_CROP for new input window. */ |
| + ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop, |
| + &cam->rect, &cam->subrect); |
| + if (ret < 0) |
| + return ret; |
| + |
| + dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n", |
| + cam_rect->width, cam_rect->height, |
| + cam_rect->left, cam_rect->top); |
| + |
| + /* On success cam_crop contains current camera crop */ |
| + |
| + /* Retrieve camera output window */ |
| + ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| + if (ret < 0) |
| + return ret; |
| + |
| + if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT) |
| + return -EINVAL; |
| + |
| + /* Cache camera output window */ |
| + cam->width = mf.width; |
| + cam->height = mf.height; |
| + |
| + icd->user_width = cam->width; |
| + icd->user_height = cam->height; |
| + |
| + cam->vin_left = rect->left & ~1; |
| + cam->vin_top = rect->top & ~1; |
| + |
| + /* Use VIN cropping to crop to the new window. */ |
| + ret = rcar_vin_set_rect(icd); |
| + if (ret < 0) |
| + return ret; |
| + |
| + cam->subrect = *rect; |
| + |
| + dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n", |
| + icd->user_width, icd->user_height, |
| + cam->vin_left, cam->vin_top); |
| + |
| + /* Restore capture */ |
| + for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| + if (priv->queue_buf[i] && priv->state == STOPPED) { |
| + vnmc |= VNMC_ME; |
| + break; |
| + } |
| + } |
| + capture_restore(priv, vnmc); |
| + |
| + /* Even if only camera cropping succeeded */ |
| + return ret; |
| +} |
| + |
| +static int rcar_vin_get_crop(struct soc_camera_device *icd, |
| + struct v4l2_crop *a) |
| +{ |
| + struct rcar_vin_cam *cam = icd->host_priv; |
| + |
| + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| + a->c = cam->subrect; |
| + |
| + return 0; |
| +} |
| + |
| +/* Similar to set_crop multistage iterative algorithm */ |
| +static int rcar_vin_set_fmt(struct soc_camera_device *icd, |
| + struct v4l2_format *f) |
| +{ |
| + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| + struct rcar_vin_priv *priv = ici->priv; |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct rcar_vin_cam *cam = icd->host_priv; |
| + struct v4l2_pix_format *pix = &f->fmt.pix; |
| + struct v4l2_mbus_framefmt mf; |
| + struct device *dev = icd->parent; |
| + __u32 pixfmt = pix->pixelformat; |
| + const struct soc_camera_format_xlate *xlate; |
| + unsigned int vin_sub_width = 0, vin_sub_height = 0; |
| + int ret; |
| + bool can_scale; |
| + enum v4l2_field field; |
| + v4l2_std_id std; |
| + |
| + dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n", |
| + pixfmt, pix->width, pix->height); |
| + |
| + switch (pix->field) { |
| + default: |
| + pix->field = V4L2_FIELD_NONE; |
| + /* fall-through */ |
| + case V4L2_FIELD_NONE: |
| + case V4L2_FIELD_TOP: |
| + case V4L2_FIELD_BOTTOM: |
| + case V4L2_FIELD_INTERLACED_TB: |
| + case V4L2_FIELD_INTERLACED_BT: |
| + field = pix->field; |
| + break; |
| + case V4L2_FIELD_INTERLACED: |
| + /* Query for standard if not explicitly mentioned _TB/_BT */ |
| + ret = v4l2_subdev_call(sd, video, querystd, &std); |
| + if (ret < 0) |
| + std = V4L2_STD_625_50; |
| + |
| + field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB : |
| + V4L2_FIELD_INTERLACED_BT; |
| + break; |
| + } |
| + |
| + xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| + if (!xlate) { |
| + dev_warn(dev, "Format %x not found\n", pixfmt); |
| + return -EINVAL; |
| + } |
| + /* Calculate client output geometry */ |
| + soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, |
| + 12); |
| + mf.field = pix->field; |
| + mf.colorspace = pix->colorspace; |
| + mf.code = xlate->code; |
| + |
| + switch (pixfmt) { |
| + case V4L2_PIX_FMT_RGB32: |
| + can_scale = priv->chip != RCAR_E1; |
| + break; |
| + case V4L2_PIX_FMT_UYVY: |
| + case V4L2_PIX_FMT_YUYV: |
| + case V4L2_PIX_FMT_RGB565: |
| + case V4L2_PIX_FMT_RGB555X: |
| + can_scale = true; |
| + break; |
| + default: |
| + can_scale = false; |
| + break; |
| + } |
| + |
| + dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height); |
| + |
| + ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect, |
| + &mf, &vin_sub_width, &vin_sub_height, |
| + can_scale, 12); |
| + |
| + /* Done with the camera. Now see if we can improve the result */ |
| + dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", |
| + ret, mf.width, mf.height, pix->width, pix->height); |
| + |
| + if (ret == -ENOIOCTLCMD) |
| + dev_dbg(dev, "Sensor doesn't support scaling\n"); |
| + else if (ret < 0) |
| + return ret; |
| + |
| + if (mf.code != xlate->code) |
| + return -EINVAL; |
| + |
| + /* Prepare VIN crop */ |
| + cam->width = mf.width; |
| + cam->height = mf.height; |
| + |
| + /* Use VIN scaling to scale to the requested user window. */ |
| + |
| + /* We cannot scale up */ |
| + if (pix->width > vin_sub_width) |
| + vin_sub_width = pix->width; |
| + |
| + if (pix->height > vin_sub_height) |
| + vin_sub_height = pix->height; |
| + |
| + pix->colorspace = mf.colorspace; |
| + |
| + if (!can_scale) { |
| + pix->width = vin_sub_width; |
| + pix->height = vin_sub_height; |
| + } |
| + |
| + /* |
| + * We have calculated CFLCR, the actual configuration will be performed |
| + * in rcar_vin_set_bus_param() |
| + */ |
| + |
| + dev_dbg(dev, "W: %u : %u, H: %u : %u\n", |
| + vin_sub_width, pix->width, vin_sub_height, pix->height); |
| + |
| + icd->current_fmt = xlate; |
| + |
| + priv->field = field; |
| + |
| + return 0; |
| +} |
| + |
| +static int rcar_vin_try_fmt(struct soc_camera_device *icd, |
| + struct v4l2_format *f) |
| +{ |
| + const struct soc_camera_format_xlate *xlate; |
| + struct v4l2_pix_format *pix = &f->fmt.pix; |
| + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| + struct v4l2_mbus_framefmt mf; |
| + __u32 pixfmt = pix->pixelformat; |
| + int width, height; |
| + int ret; |
| + |
| + xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| + if (!xlate) { |
| + xlate = icd->current_fmt; |
| + dev_dbg(icd->parent, "Format %x not found, keeping %x\n", |
| + pixfmt, xlate->host_fmt->fourcc); |
| + pixfmt = xlate->host_fmt->fourcc; |
| + pix->pixelformat = pixfmt; |
| + pix->colorspace = icd->colorspace; |
| + } |
| + |
| + /* FIXME: calculate using depth and bus width */ |
| + v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1, |
| + &pix->height, 4, VIN_MAX_HEIGHT, 2, 0); |
| + |
| + width = pix->width; |
| + height = pix->height; |
| + |
| + /* let soc-camera calculate these values */ |
| + pix->bytesperline = 0; |
| + pix->sizeimage = 0; |
| + |
| + /* limit to sensor capabilities */ |
| + mf.width = pix->width; |
| + mf.height = pix->height; |
| + mf.field = pix->field; |
| + mf.code = xlate->code; |
| + mf.colorspace = pix->colorspace; |
| + |
| + ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
| + video, try_mbus_fmt, &mf); |
| + if (ret < 0) |
| + return ret; |
| + |
| + pix->width = mf.width; |
| + pix->height = mf.height; |
| + pix->field = mf.field; |
| + pix->colorspace = mf.colorspace; |
| + |
| + if (pixfmt == V4L2_PIX_FMT_NV16) { |
| + /* FIXME: check against rect_max after converting soc-camera */ |
| + /* We can scale precisely, need a bigger image from camera */ |
| + if (pix->width < width || pix->height < height) { |
| + /* |
| + * We presume, the sensor behaves sanely, i.e. if |
| + * requested a bigger rectangle, it will not return a |
| + * smaller one. |
| + */ |
| + mf.width = VIN_MAX_WIDTH; |
| + mf.height = VIN_MAX_HEIGHT; |
| + ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| + soc_camera_grp_id(icd), |
| + video, try_mbus_fmt, |
| + &mf); |
| + if (ret < 0) { |
| + dev_err(icd->parent, |
| + "client try_fmt() = %d\n", ret); |
| + return ret; |
| + } |
| + } |
| + /* We will scale exactly */ |
| + if (mf.width > width) |
| + pix->width = width; |
| + if (mf.height > height) |
| + pix->height = height; |
| + } |
| + |
| + return ret; |
| +} |
| + |
| +static unsigned int rcar_vin_poll(struct file *file, poll_table *pt) |
| +{ |
| + struct soc_camera_device *icd = file->private_data; |
| + |
| + return vb2_poll(&icd->vb2_vidq, file, pt); |
| +} |
| + |
| +static int rcar_vin_querycap(struct soc_camera_host *ici, |
| + struct v4l2_capability *cap) |
| +{ |
| + strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card)); |
| + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| + return 0; |
| +} |
| + |
| +static int rcar_vin_init_videobuf2(struct vb2_queue *vq, |
| + struct soc_camera_device *icd) |
| +{ |
| + vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| + vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| + vq->drv_priv = icd; |
| + vq->ops = &rcar_vin_vb2_ops; |
| + vq->mem_ops = &vb2_dma_contig_memops; |
| + vq->buf_struct_size = sizeof(struct rcar_vin_buffer); |
| + vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| + |
| + return vb2_queue_init(vq); |
| +} |
| + |
| +static struct soc_camera_host_ops rcar_vin_host_ops = { |
| + .owner = THIS_MODULE, |
| + .add = rcar_vin_add_device, |
| + .remove = rcar_vin_remove_device, |
| + .clock_start = rcar_vin_clock_start, |
| + .clock_stop = rcar_vin_clock_stop, |
| + .get_formats = rcar_vin_get_formats, |
| + .put_formats = rcar_vin_put_formats, |
| + .get_crop = rcar_vin_get_crop, |
| + .set_crop = rcar_vin_set_crop, |
| + .try_fmt = rcar_vin_try_fmt, |
| + .set_fmt = rcar_vin_set_fmt, |
| + .poll = rcar_vin_poll, |
| + .querycap = rcar_vin_querycap, |
| + .set_bus_param = rcar_vin_set_bus_param, |
| + .init_videobuf2 = rcar_vin_init_videobuf2, |
| +}; |
| + |
| +static struct platform_device_id rcar_vin_id_table[] = { |
| + { "r8a7779-vin", RCAR_H1 }, |
| + { "r8a7778-vin", RCAR_M1 }, |
| + { "uPD35004-vin", RCAR_E1 }, |
| + {}, |
| +}; |
| +MODULE_DEVICE_TABLE(platform, rcar_vin_id_table); |
| + |
| +static int rcar_vin_probe(struct platform_device *pdev) |
| +{ |
| + struct rcar_vin_priv *priv; |
| + struct resource *mem; |
| + struct rcar_vin_platform_data *pdata; |
| + int irq, ret; |
| + |
| + pdata = pdev->dev.platform_data; |
| + if (!pdata || !pdata->flags) { |
| + dev_err(&pdev->dev, "platform data not set\n"); |
| + return -EINVAL; |
| + } |
| + |
| + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| + if (mem == NULL) |
| + return -EINVAL; |
| + |
| + irq = platform_get_irq(pdev, 0); |
| + if (irq <= 0) |
| + return -EINVAL; |
| + |
| + priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv), |
| + GFP_KERNEL); |
| + if (!priv) |
| + return -ENOMEM; |
| + |
| + priv->base = devm_ioremap_resource(&pdev->dev, mem); |
| + if (IS_ERR(priv->base)) |
| + return PTR_ERR(priv->base); |
| + |
| + ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED, |
| + dev_name(&pdev->dev), priv); |
| + if (ret) |
| + return ret; |
| + |
| + priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| + if (IS_ERR(priv->alloc_ctx)) |
| + return PTR_ERR(priv->alloc_ctx); |
| + |
| + priv->ici.priv = priv; |
| + priv->ici.v4l2_dev.dev = &pdev->dev; |
| + priv->ici.nr = pdev->id; |
| + priv->ici.drv_name = dev_name(&pdev->dev); |
| + priv->ici.ops = &rcar_vin_host_ops; |
| + |
| + priv->pdata = pdata; |
| + priv->chip = pdev->id_entry->driver_data; |
| + spin_lock_init(&priv->lock); |
| + INIT_LIST_HEAD(&priv->capture); |
| + |
| + priv->state = STOPPED; |
| + |
| + pm_suspend_ignore_children(&pdev->dev, true); |
| + pm_runtime_enable(&pdev->dev); |
| + |
| + ret = soc_camera_host_register(&priv->ici); |
| + if (ret) |
| + goto cleanup; |
| + |
| + return 0; |
| + |
| +cleanup: |
| + pm_runtime_disable(&pdev->dev); |
| + vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); |
| + |
| + return ret; |
| +} |
| + |
| +static int rcar_vin_remove(struct platform_device *pdev) |
| +{ |
| + struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| + struct rcar_vin_priv *priv = container_of(soc_host, |
| + struct rcar_vin_priv, ici); |
| + |
| + soc_camera_host_unregister(soc_host); |
| + pm_runtime_disable(&pdev->dev); |
| + vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); |
| + |
| + return 0; |
| +} |
| + |
| +static struct platform_driver rcar_vin_driver = { |
| + .probe = rcar_vin_probe, |
| + .remove = rcar_vin_remove, |
| + .driver = { |
| + .name = DRV_NAME, |
| + .owner = THIS_MODULE, |
| + }, |
| + .id_table = rcar_vin_id_table, |
| +}; |
| + |
| +module_platform_driver(rcar_vin_driver); |
| + |
| +MODULE_LICENSE("GPL"); |
| +MODULE_ALIAS("platform:rcar_vin"); |
| +MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver"); |
| diff --git a/include/linux/platform_data/camera-rcar.h b/include/linux/platform_data/camera-rcar.h |
| new file mode 100644 |
| index 00000000..dfc83c58 |
| --- /dev/null |
| +++ b/include/linux/platform_data/camera-rcar.h |
| @@ -0,0 +1,25 @@ |
| +/* |
| + * Platform data for Renesas R-Car VIN soc-camera driver |
| + * |
| + * Copyright (C) 2011-2013 Renesas Solutions Corp. |
| + * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.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. |
| + */ |
| + |
| +#ifndef __CAMERA_RCAR_H_ |
| +#define __CAMERA_RCAR_H_ |
| + |
| +#define RCAR_VIN_HSYNC_ACTIVE_LOW (1 << 0) |
| +#define RCAR_VIN_VSYNC_ACTIVE_LOW (1 << 1) |
| +#define RCAR_VIN_BT601 (1 << 2) |
| +#define RCAR_VIN_BT656 (1 << 3) |
| + |
| +struct rcar_vin_platform_data { |
| + unsigned int flags; |
| +}; |
| + |
| +#endif /* __CAMERA_RCAR_H_ */ |
| -- |
| 1.8.4.3.gca3854a |
| |