mirror of https://gitee.com/openkylin/linux.git
1491 lines
38 KiB
C
1491 lines
38 KiB
C
/*
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* SoC-camera host driver for Renesas R-Car VIN unit
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*
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* Copyright (C) 2011-2013 Renesas Solutions Corp.
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* Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
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*
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* Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c"
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*
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* Copyright (C) 2008 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_data/camera-rcar.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <media/soc_camera.h>
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#include <media/soc_mediabus.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-mediabus.h>
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#include <media/v4l2-subdev.h>
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#include <media/videobuf2-dma-contig.h>
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#include "soc_scale_crop.h"
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#define DRV_NAME "rcar_vin"
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/* Register offsets for R-Car VIN */
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#define VNMC_REG 0x00 /* Video n Main Control Register */
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#define VNMS_REG 0x04 /* Video n Module Status Register */
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#define VNFC_REG 0x08 /* Video n Frame Capture Register */
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#define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */
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#define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */
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#define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */
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#define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */
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#define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */
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#define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */
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#define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */
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#define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */
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#define VNIS_REG 0x2C /* Video n Image Stride Register */
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#define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */
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#define VNIE_REG 0x40 /* Video n Interrupt Enable Register */
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#define VNINTS_REG 0x44 /* Video n Interrupt Status Register */
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#define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */
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#define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */
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#define VNYS_REG 0x50 /* Video n Y Scale Register */
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#define VNXS_REG 0x54 /* Video n X Scale Register */
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#define VNDMR_REG 0x58 /* Video n Data Mode Register */
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#define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */
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#define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */
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/* Register bit fields for R-Car VIN */
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/* Video n Main Control Register bits */
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#define VNMC_FOC (1 << 21)
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#define VNMC_YCAL (1 << 19)
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#define VNMC_INF_YUV8_BT656 (0 << 16)
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#define VNMC_INF_YUV8_BT601 (1 << 16)
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#define VNMC_INF_YUV16 (5 << 16)
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#define VNMC_VUP (1 << 10)
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#define VNMC_IM_ODD (0 << 3)
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#define VNMC_IM_ODD_EVEN (1 << 3)
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#define VNMC_IM_EVEN (2 << 3)
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#define VNMC_IM_FULL (3 << 3)
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#define VNMC_BPS (1 << 1)
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#define VNMC_ME (1 << 0)
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/* Video n Module Status Register bits */
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#define VNMS_FBS_MASK (3 << 3)
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#define VNMS_FBS_SHIFT 3
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#define VNMS_AV (1 << 1)
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#define VNMS_CA (1 << 0)
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/* Video n Frame Capture Register bits */
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#define VNFC_C_FRAME (1 << 1)
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#define VNFC_S_FRAME (1 << 0)
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/* Video n Interrupt Enable Register bits */
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#define VNIE_FIE (1 << 4)
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#define VNIE_EFE (1 << 1)
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/* Video n Data Mode Register bits */
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#define VNDMR_EXRGB (1 << 8)
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#define VNDMR_BPSM (1 << 4)
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#define VNDMR_DTMD_YCSEP (1 << 1)
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#define VNDMR_DTMD_ARGB1555 (1 << 0)
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/* Video n Data Mode Register 2 bits */
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#define VNDMR2_VPS (1 << 30)
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#define VNDMR2_HPS (1 << 29)
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#define VNDMR2_FTEV (1 << 17)
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#define VIN_MAX_WIDTH 2048
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#define VIN_MAX_HEIGHT 2048
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enum chip_id {
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RCAR_H2,
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RCAR_H1,
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RCAR_M1,
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RCAR_E1,
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};
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enum rcar_vin_state {
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STOPPED = 0,
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RUNNING,
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STOPPING,
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};
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struct rcar_vin_priv {
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void __iomem *base;
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spinlock_t lock;
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int sequence;
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/* State of the VIN module in capturing mode */
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enum rcar_vin_state state;
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struct rcar_vin_platform_data *pdata;
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struct soc_camera_host ici;
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struct list_head capture;
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#define MAX_BUFFER_NUM 3
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struct vb2_buffer *queue_buf[MAX_BUFFER_NUM];
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struct vb2_alloc_ctx *alloc_ctx;
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enum v4l2_field field;
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unsigned int vb_count;
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unsigned int nr_hw_slots;
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bool request_to_stop;
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struct completion capture_stop;
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enum chip_id chip;
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};
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#define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM)
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struct rcar_vin_buffer {
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struct vb2_buffer vb;
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struct list_head list;
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};
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#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
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struct rcar_vin_buffer, \
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vb)->list)
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struct rcar_vin_cam {
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/* VIN offsets within the camera output, before the VIN scaler */
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unsigned int vin_left;
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unsigned int vin_top;
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/* Client output, as seen by the VIN */
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unsigned int width;
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unsigned int height;
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/*
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* User window from S_CROP / G_CROP, produced by client cropping and
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* scaling, VIN scaling and VIN cropping, mapped back onto the client
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* input window
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*/
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struct v4l2_rect subrect;
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/* Camera cropping rectangle */
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struct v4l2_rect rect;
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const struct soc_mbus_pixelfmt *extra_fmt;
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};
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/*
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* .queue_setup() is called to check whether the driver can accept the requested
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* number of buffers and to fill in plane sizes for the current frame format if
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* required
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*/
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static int rcar_vin_videobuf_setup(struct vb2_queue *vq,
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const struct v4l2_format *fmt,
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unsigned int *count,
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unsigned int *num_planes,
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unsigned int sizes[], void *alloc_ctxs[])
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{
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struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
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struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
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struct rcar_vin_priv *priv = ici->priv;
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if (fmt) {
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const struct soc_camera_format_xlate *xlate;
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unsigned int bytes_per_line;
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int ret;
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xlate = soc_camera_xlate_by_fourcc(icd,
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fmt->fmt.pix.pixelformat);
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if (!xlate)
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return -EINVAL;
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ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
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xlate->host_fmt);
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if (ret < 0)
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return ret;
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bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret);
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ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line,
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fmt->fmt.pix.height);
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if (ret < 0)
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return ret;
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sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret);
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} else {
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/* Called from VIDIOC_REQBUFS or in compatibility mode */
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sizes[0] = icd->sizeimage;
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}
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alloc_ctxs[0] = priv->alloc_ctx;
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if (!vq->num_buffers)
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priv->sequence = 0;
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if (!*count)
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*count = 2;
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priv->vb_count = *count;
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*num_planes = 1;
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/* Number of hardware slots */
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if (is_continuous_transfer(priv))
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priv->nr_hw_slots = MAX_BUFFER_NUM;
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else
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priv->nr_hw_slots = 1;
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dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]);
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return 0;
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}
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static int rcar_vin_setup(struct rcar_vin_priv *priv)
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{
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struct soc_camera_device *icd = priv->ici.icd;
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struct rcar_vin_cam *cam = icd->host_priv;
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u32 vnmc, dmr, interrupts;
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bool progressive = false, output_is_yuv = false;
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switch (priv->field) {
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case V4L2_FIELD_TOP:
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vnmc = VNMC_IM_ODD;
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break;
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case V4L2_FIELD_BOTTOM:
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vnmc = VNMC_IM_EVEN;
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break;
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case V4L2_FIELD_INTERLACED:
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case V4L2_FIELD_INTERLACED_TB:
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vnmc = VNMC_IM_FULL;
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break;
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case V4L2_FIELD_INTERLACED_BT:
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vnmc = VNMC_IM_FULL | VNMC_FOC;
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break;
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case V4L2_FIELD_NONE:
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if (is_continuous_transfer(priv)) {
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vnmc = VNMC_IM_ODD_EVEN;
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progressive = true;
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} else {
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vnmc = VNMC_IM_ODD;
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}
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break;
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default:
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vnmc = VNMC_IM_ODD;
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break;
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}
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/* input interface */
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switch (icd->current_fmt->code) {
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case V4L2_MBUS_FMT_YUYV8_1X16:
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/* BT.601/BT.1358 16bit YCbCr422 */
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vnmc |= VNMC_INF_YUV16;
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break;
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case V4L2_MBUS_FMT_YUYV8_2X8:
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/* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
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vnmc |= priv->pdata->flags & RCAR_VIN_BT656 ?
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VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
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default:
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break;
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}
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/* output format */
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switch (icd->current_fmt->host_fmt->fourcc) {
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case V4L2_PIX_FMT_NV16:
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iowrite32(ALIGN(cam->width * cam->height, 0x80),
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priv->base + VNUVAOF_REG);
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dmr = VNDMR_DTMD_YCSEP;
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output_is_yuv = true;
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break;
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case V4L2_PIX_FMT_YUYV:
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dmr = VNDMR_BPSM;
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output_is_yuv = true;
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break;
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case V4L2_PIX_FMT_UYVY:
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dmr = 0;
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output_is_yuv = true;
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break;
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case V4L2_PIX_FMT_RGB555X:
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dmr = VNDMR_DTMD_ARGB1555;
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break;
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case V4L2_PIX_FMT_RGB565:
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dmr = 0;
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break;
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case V4L2_PIX_FMT_RGB32:
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if (priv->chip == RCAR_H2 || priv->chip == RCAR_H1 ||
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priv->chip == RCAR_E1) {
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dmr = VNDMR_EXRGB;
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break;
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}
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default:
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dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n",
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icd->current_fmt->host_fmt->fourcc);
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return -EINVAL;
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}
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/* Always update on field change */
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vnmc |= VNMC_VUP;
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/* If input and output use the same colorspace, use bypass mode */
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if (output_is_yuv)
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vnmc |= VNMC_BPS;
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/* progressive or interlaced mode */
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interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE;
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/* ack interrupts */
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iowrite32(interrupts, priv->base + VNINTS_REG);
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/* enable interrupts */
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iowrite32(interrupts, priv->base + VNIE_REG);
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/* start capturing */
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iowrite32(dmr, priv->base + VNDMR_REG);
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iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG);
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return 0;
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}
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static void rcar_vin_capture(struct rcar_vin_priv *priv)
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{
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if (is_continuous_transfer(priv))
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/* Continuous Frame Capture Mode */
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iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG);
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else
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/* Single Frame Capture Mode */
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iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG);
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}
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static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv)
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{
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priv->state = STOPPING;
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/* set continuous & single transfer off */
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iowrite32(0, priv->base + VNFC_REG);
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/* disable capture (release DMA buffer), reset */
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iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
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priv->base + VNMC_REG);
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/* update the status if stopped already */
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if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA))
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priv->state = STOPPED;
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}
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static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv)
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{
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int slot;
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for (slot = 0; slot < priv->nr_hw_slots; slot++)
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if (priv->queue_buf[slot] == NULL)
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return slot;
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return -1;
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}
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static int rcar_vin_hw_ready(struct rcar_vin_priv *priv)
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{
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/* Ensure all HW slots are filled */
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return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0;
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}
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/* Moves a buffer from the queue to the HW slots */
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static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv)
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{
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struct vb2_buffer *vb;
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dma_addr_t phys_addr_top;
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int slot;
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if (list_empty(&priv->capture))
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return 0;
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/* Find a free HW slot */
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slot = rcar_vin_get_free_hw_slot(priv);
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if (slot < 0)
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return 0;
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vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb;
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list_del_init(to_buf_list(vb));
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priv->queue_buf[slot] = vb;
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phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0);
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iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
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return 1;
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}
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static void rcar_vin_videobuf_queue(struct vb2_buffer *vb)
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{
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struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
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struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
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struct rcar_vin_priv *priv = ici->priv;
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unsigned long size;
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size = icd->sizeimage;
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if (vb2_plane_size(vb, 0) < size) {
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dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n",
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vb->v4l2_buf.index, vb2_plane_size(vb, 0), size);
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goto error;
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}
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vb2_set_plane_payload(vb, 0, size);
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dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
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vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
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spin_lock_irq(&priv->lock);
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list_add_tail(to_buf_list(vb), &priv->capture);
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rcar_vin_fill_hw_slot(priv);
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/* If we weren't running, and have enough buffers, start capturing! */
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if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) {
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if (rcar_vin_setup(priv)) {
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/* Submit error */
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list_del_init(to_buf_list(vb));
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spin_unlock_irq(&priv->lock);
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goto error;
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}
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priv->request_to_stop = false;
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init_completion(&priv->capture_stop);
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priv->state = RUNNING;
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rcar_vin_capture(priv);
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}
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spin_unlock_irq(&priv->lock);
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return;
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error:
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vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
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}
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static void rcar_vin_videobuf_release(struct vb2_buffer *vb)
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{
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struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
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struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
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struct rcar_vin_priv *priv = ici->priv;
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unsigned int i;
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int buf_in_use = 0;
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spin_lock_irq(&priv->lock);
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/* Is the buffer in use by the VIN hardware? */
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for (i = 0; i < MAX_BUFFER_NUM; i++) {
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if (priv->queue_buf[i] == vb) {
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buf_in_use = 1;
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break;
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}
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}
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if (buf_in_use) {
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while (priv->state != STOPPED) {
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/* issue stop if running */
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if (priv->state == RUNNING)
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rcar_vin_request_capture_stop(priv);
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|
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/* wait until capturing has been stopped */
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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[] = {
|
|
{ "r8a7790-vin", RCAR_H2 },
|
|
{ "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");
|