Support for the Video Engine Unit (VEU) on SuperH and
SH-Mobile SoCs.
+config VIDEO_RENESAS_VSP1
+ tristate "Renesas VSP1 Video Processing Engine"
+ depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ select VIDEOBUF2_DMA_CONTIG
+ ---help---
+ This is a V4L2 driver for the Renesas VSP1 video processing engine.
+
+ To compile this driver as a module, choose M here: the module
+ will be called vsp1.
+
endif # V4L_MEM2MEM_DRIVERS
menuconfig V4L_TEST_DRIVERS
obj-$(CONFIG_SOC_CAMERA) += soc_camera/
+obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
+
obj-y += davinci/
obj-$(CONFIG_ARCH_OMAP) += omap/
--- /dev/null
+vsp1-y := vsp1_drv.o vsp1_entity.o vsp1_video.o
+vsp1-y += vsp1_rpf.o vsp1_rwpf.o vsp1_wpf.o
+vsp1-y += vsp1_lif.o vsp1_uds.o
+
+obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1.o
--- /dev/null
+/*
+ * vsp1.h -- R-Car VSP1 Driver
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_H__
+#define __VSP1_H__
+
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/platform_data/vsp1.h>
+
+#include <media/media-device.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_regs.h"
+
+struct clk;
+struct device;
+
+struct vsp1_platform_data;
+struct vsp1_lif;
+struct vsp1_rwpf;
+struct vsp1_uds;
+
+#define VPS1_MAX_RPF 5
+#define VPS1_MAX_UDS 3
+#define VPS1_MAX_WPF 4
+
+struct vsp1_device {
+ struct device *dev;
+ struct vsp1_platform_data *pdata;
+
+ void __iomem *mmio;
+ struct clk *clock;
+
+ struct mutex lock;
+ int ref_count;
+
+ struct vsp1_lif *lif;
+ struct vsp1_rwpf *rpf[VPS1_MAX_RPF];
+ struct vsp1_uds *uds[VPS1_MAX_UDS];
+ struct vsp1_rwpf *wpf[VPS1_MAX_WPF];
+
+ struct list_head entities;
+
+ struct v4l2_device v4l2_dev;
+ struct media_device media_dev;
+};
+
+struct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1);
+void vsp1_device_put(struct vsp1_device *vsp1);
+
+static inline u32 vsp1_read(struct vsp1_device *vsp1, u32 reg)
+{
+ return ioread32(vsp1->mmio + reg);
+}
+
+static inline void vsp1_write(struct vsp1_device *vsp1, u32 reg, u32 data)
+{
+ iowrite32(data, vsp1->mmio + reg);
+}
+
+#endif /* __VSP1_H__ */
--- /dev/null
+/*
+ * vsp1_drv.c -- R-Car VSP1 Driver
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/videodev2.h>
+
+#include "vsp1.h"
+#include "vsp1_lif.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_uds.h"
+
+/* -----------------------------------------------------------------------------
+ * Interrupt Handling
+ */
+
+static irqreturn_t vsp1_irq_handler(int irq, void *data)
+{
+ u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE;
+ struct vsp1_device *vsp1 = data;
+ irqreturn_t ret = IRQ_NONE;
+ unsigned int i;
+
+ for (i = 0; i < VPS1_MAX_WPF; ++i) {
+ struct vsp1_rwpf *wpf = vsp1->wpf[i];
+ struct vsp1_pipeline *pipe;
+ u32 status;
+
+ if (wpf == NULL)
+ continue;
+
+ pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
+ status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
+ vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
+
+ if (status & VI6_WFP_IRQ_STA_FRE) {
+ vsp1_pipeline_frame_end(pipe);
+ ret = IRQ_HANDLED;
+ }
+ }
+
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Entities
+ */
+
+/*
+ * vsp1_create_links - Create links from all sources to the given sink
+ *
+ * This function creates media links from all valid sources to the given sink
+ * pad. Links that would be invalid according to the VSP1 hardware capabilities
+ * are skipped. Those include all links
+ *
+ * - from a UDS to a UDS (UDS entities can't be chained)
+ * - from an entity to itself (no loops are allowed)
+ */
+static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink)
+{
+ struct media_entity *entity = &sink->subdev.entity;
+ struct vsp1_entity *source;
+ unsigned int pad;
+ int ret;
+
+ list_for_each_entry(source, &vsp1->entities, list_dev) {
+ u32 flags;
+
+ if (source->type == sink->type)
+ continue;
+
+ if (source->type == VSP1_ENTITY_LIF ||
+ source->type == VSP1_ENTITY_WPF)
+ continue;
+
+ flags = source->type == VSP1_ENTITY_RPF &&
+ sink->type == VSP1_ENTITY_WPF &&
+ source->index == sink->index
+ ? MEDIA_LNK_FL_ENABLED : 0;
+
+ for (pad = 0; pad < entity->num_pads; ++pad) {
+ if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
+ continue;
+
+ ret = media_entity_create_link(&source->subdev.entity,
+ source->source_pad,
+ entity, pad, flags);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void vsp1_destroy_entities(struct vsp1_device *vsp1)
+{
+ struct vsp1_entity *entity;
+ struct vsp1_entity *next;
+
+ list_for_each_entry_safe(entity, next, &vsp1->entities, list_dev) {
+ list_del(&entity->list_dev);
+ vsp1_entity_destroy(entity);
+ }
+
+ v4l2_device_unregister(&vsp1->v4l2_dev);
+ media_device_unregister(&vsp1->media_dev);
+}
+
+static int vsp1_create_entities(struct vsp1_device *vsp1)
+{
+ struct media_device *mdev = &vsp1->media_dev;
+ struct v4l2_device *vdev = &vsp1->v4l2_dev;
+ struct vsp1_entity *entity;
+ unsigned int i;
+ int ret;
+
+ mdev->dev = vsp1->dev;
+ strlcpy(mdev->model, "VSP1", sizeof(mdev->model));
+ ret = media_device_register(mdev);
+ if (ret < 0) {
+ dev_err(vsp1->dev, "media device registration failed (%d)\n",
+ ret);
+ return ret;
+ }
+
+ vdev->mdev = mdev;
+ ret = v4l2_device_register(vsp1->dev, vdev);
+ if (ret < 0) {
+ dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
+ ret);
+ goto done;
+ }
+
+ /* Instantiate all the entities. */
+ if (vsp1->pdata->features & VSP1_HAS_LIF) {
+ vsp1->lif = vsp1_lif_create(vsp1);
+ if (IS_ERR(vsp1->lif)) {
+ ret = PTR_ERR(vsp1->lif);
+ goto done;
+ }
+
+ list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities);
+ }
+
+ for (i = 0; i < vsp1->pdata->rpf_count; ++i) {
+ struct vsp1_rwpf *rpf;
+
+ rpf = vsp1_rpf_create(vsp1, i);
+ if (IS_ERR(rpf)) {
+ ret = PTR_ERR(rpf);
+ goto done;
+ }
+
+ vsp1->rpf[i] = rpf;
+ list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
+ }
+
+ for (i = 0; i < vsp1->pdata->uds_count; ++i) {
+ struct vsp1_uds *uds;
+
+ uds = vsp1_uds_create(vsp1, i);
+ if (IS_ERR(uds)) {
+ ret = PTR_ERR(uds);
+ goto done;
+ }
+
+ vsp1->uds[i] = uds;
+ list_add_tail(&uds->entity.list_dev, &vsp1->entities);
+ }
+
+ for (i = 0; i < vsp1->pdata->wpf_count; ++i) {
+ struct vsp1_rwpf *wpf;
+
+ wpf = vsp1_wpf_create(vsp1, i);
+ if (IS_ERR(wpf)) {
+ ret = PTR_ERR(wpf);
+ goto done;
+ }
+
+ vsp1->wpf[i] = wpf;
+ list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
+ }
+
+ /* Create links. */
+ list_for_each_entry(entity, &vsp1->entities, list_dev) {
+ if (entity->type == VSP1_ENTITY_LIF ||
+ entity->type == VSP1_ENTITY_RPF)
+ continue;
+
+ ret = vsp1_create_links(vsp1, entity);
+ if (ret < 0)
+ goto done;
+ }
+
+ if (vsp1->pdata->features & VSP1_HAS_LIF) {
+ ret = media_entity_create_link(
+ &vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE,
+ &vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* Register all subdevs. */
+ list_for_each_entry(entity, &vsp1->entities, list_dev) {
+ ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
+ &entity->subdev);
+ if (ret < 0)
+ goto done;
+ }
+
+ ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
+
+done:
+ if (ret < 0)
+ vsp1_destroy_entities(vsp1);
+
+ return ret;
+}
+
+static int vsp1_device_init(struct vsp1_device *vsp1)
+{
+ unsigned int i;
+ u32 status;
+
+ /* Reset any channel that might be running. */
+ status = vsp1_read(vsp1, VI6_STATUS);
+
+ for (i = 0; i < VPS1_MAX_WPF; ++i) {
+ unsigned int timeout;
+
+ if (!(status & VI6_STATUS_SYS_ACT(i)))
+ continue;
+
+ vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(i));
+ for (timeout = 10; timeout > 0; --timeout) {
+ status = vsp1_read(vsp1, VI6_STATUS);
+ if (!(status & VI6_STATUS_SYS_ACT(i)))
+ break;
+
+ usleep_range(1000, 2000);
+ }
+
+ if (!timeout) {
+ dev_err(vsp1->dev, "failed to reset wpf.%u\n", i);
+ return -ETIMEDOUT;
+ }
+ }
+
+ vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
+ (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
+
+ for (i = 0; i < VPS1_MAX_RPF; ++i)
+ vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
+
+ for (i = 0; i < VPS1_MAX_UDS; ++i)
+ vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
+
+ vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
+ vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
+ vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
+ vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
+ vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
+ vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
+
+ vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
+ (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
+ vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
+ (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
+
+ return 0;
+}
+
+/*
+ * vsp1_device_get - Acquire the VSP1 device
+ *
+ * Increment the VSP1 reference count and initialize the device if the first
+ * reference is taken.
+ *
+ * Return a pointer to the VSP1 device or NULL if an error occured.
+ */
+struct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1)
+{
+ struct vsp1_device *__vsp1 = vsp1;
+ int ret;
+
+ mutex_lock(&vsp1->lock);
+ if (vsp1->ref_count > 0)
+ goto done;
+
+ ret = clk_prepare_enable(vsp1->clock);
+ if (ret < 0) {
+ __vsp1 = NULL;
+ goto done;
+ }
+
+ ret = vsp1_device_init(vsp1);
+ if (ret < 0) {
+ clk_disable_unprepare(vsp1->clock);
+ __vsp1 = NULL;
+ goto done;
+ }
+
+done:
+ if (__vsp1)
+ vsp1->ref_count++;
+
+ mutex_unlock(&vsp1->lock);
+ return __vsp1;
+}
+
+/*
+ * vsp1_device_put - Release the VSP1 device
+ *
+ * Decrement the VSP1 reference count and cleanup the device if the last
+ * reference is released.
+ */
+void vsp1_device_put(struct vsp1_device *vsp1)
+{
+ mutex_lock(&vsp1->lock);
+
+ if (--vsp1->ref_count == 0)
+ clk_disable_unprepare(vsp1->clock);
+
+ mutex_unlock(&vsp1->lock);
+}
+
+/* -----------------------------------------------------------------------------
+ * Power Management
+ */
+
+#ifdef CONFIG_PM_SLEEP
+static int vsp1_pm_suspend(struct device *dev)
+{
+ struct vsp1_device *vsp1 = dev_get_drvdata(dev);
+
+ WARN_ON(mutex_is_locked(&vsp1->lock));
+
+ if (vsp1->ref_count == 0)
+ return 0;
+
+ clk_disable_unprepare(vsp1->clock);
+ return 0;
+}
+
+static int vsp1_pm_resume(struct device *dev)
+{
+ struct vsp1_device *vsp1 = dev_get_drvdata(dev);
+
+ WARN_ON(mutex_is_locked(&vsp1->lock));
+
+ if (vsp1->ref_count)
+ return 0;
+
+ return clk_prepare_enable(vsp1->clock);
+}
+#endif
+
+static const struct dev_pm_ops vsp1_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
+};
+
+/* -----------------------------------------------------------------------------
+ * Platform Driver
+ */
+
+static struct vsp1_platform_data *
+vsp1_get_platform_data(struct platform_device *pdev)
+{
+ struct vsp1_platform_data *pdata = pdev->dev.platform_data;
+
+ if (pdata == NULL) {
+ dev_err(&pdev->dev, "missing platform data\n");
+ return NULL;
+ }
+
+ if (pdata->rpf_count <= 0 || pdata->rpf_count > VPS1_MAX_RPF) {
+ dev_err(&pdev->dev, "invalid number of RPF (%u)\n",
+ pdata->rpf_count);
+ return NULL;
+ }
+
+ if (pdata->uds_count <= 0 || pdata->uds_count > VPS1_MAX_UDS) {
+ dev_err(&pdev->dev, "invalid number of UDS (%u)\n",
+ pdata->uds_count);
+ return NULL;
+ }
+
+ if (pdata->wpf_count <= 0 || pdata->wpf_count > VPS1_MAX_WPF) {
+ dev_err(&pdev->dev, "invalid number of WPF (%u)\n",
+ pdata->wpf_count);
+ return NULL;
+ }
+
+ return pdata;
+}
+
+static int vsp1_probe(struct platform_device *pdev)
+{
+ struct vsp1_device *vsp1;
+ struct resource *irq;
+ struct resource *io;
+ int ret;
+
+ vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
+ if (vsp1 == NULL)
+ return -ENOMEM;
+
+ vsp1->dev = &pdev->dev;
+ mutex_init(&vsp1->lock);
+ INIT_LIST_HEAD(&vsp1->entities);
+
+ vsp1->pdata = vsp1_get_platform_data(pdev);
+ if (vsp1->pdata == NULL)
+ return -ENODEV;
+
+ /* I/O, IRQ and clock resources */
+ io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
+ if (IS_ERR((void *)vsp1->mmio))
+ return PTR_ERR((void *)vsp1->mmio);
+
+ vsp1->clock = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(vsp1->clock)) {
+ dev_err(&pdev->dev, "failed to get clock\n");
+ return PTR_ERR(vsp1->clock);
+ }
+
+ irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "missing IRQ\n");
+ return -EINVAL;
+ }
+
+ ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
+ IRQF_SHARED, dev_name(&pdev->dev), vsp1);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request IRQ\n");
+ return ret;
+ }
+
+ /* Instanciate entities */
+ ret = vsp1_create_entities(vsp1);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to create entities\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, vsp1);
+
+ return 0;
+}
+
+static int vsp1_remove(struct platform_device *pdev)
+{
+ struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
+
+ vsp1_destroy_entities(vsp1);
+
+ return 0;
+}
+
+static struct platform_driver vsp1_platform_driver = {
+ .probe = vsp1_probe,
+ .remove = vsp1_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "vsp1",
+ .pm = &vsp1_pm_ops,
+ },
+};
+
+module_platform_driver(vsp1_platform_driver);
+
+MODULE_ALIAS("vsp1");
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_DESCRIPTION("Renesas VSP1 Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * vsp1_entity.c -- R-Car VSP1 Base Entity
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_entity.h"
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+struct v4l2_mbus_framefmt *
+vsp1_entity_get_pad_format(struct vsp1_entity *entity,
+ struct v4l2_subdev_fh *fh,
+ unsigned int pad, u32 which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(fh, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &entity->formats[pad];
+ default:
+ return NULL;
+ }
+}
+
+/*
+ * vsp1_entity_init_formats - Initialize formats on all pads
+ * @subdev: V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values. If fh is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_subdev_format format;
+ unsigned int pad;
+
+ for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
+ memset(&format, 0, sizeof(format));
+
+ format.pad = pad;
+ format.which = fh ? V4L2_SUBDEV_FORMAT_TRY
+ : V4L2_SUBDEV_FORMAT_ACTIVE;
+
+ v4l2_subdev_call(subdev, pad, set_fmt, fh, &format);
+ }
+}
+
+static int vsp1_entity_open(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh)
+{
+ vsp1_entity_init_formats(subdev, fh);
+
+ return 0;
+}
+
+const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = {
+ .open = vsp1_entity_open,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media Operations
+ */
+
+static int vsp1_entity_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct vsp1_entity *source;
+
+ if (!(local->flags & MEDIA_PAD_FL_SOURCE))
+ return 0;
+
+ source = container_of(local->entity, struct vsp1_entity, subdev.entity);
+
+ if (!source->route)
+ return 0;
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (source->sink)
+ return -EBUSY;
+ source->sink = remote->entity;
+ } else {
+ source->sink = NULL;
+ }
+
+ return 0;
+}
+
+const struct media_entity_operations vsp1_media_ops = {
+ .link_setup = vsp1_entity_link_setup,
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization
+ */
+
+int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
+ unsigned int num_pads)
+{
+ static const struct {
+ unsigned int id;
+ unsigned int reg;
+ } routes[] = {
+ { VI6_DPR_NODE_LIF, 0 },
+ { VI6_DPR_NODE_RPF(0), VI6_DPR_RPF_ROUTE(0) },
+ { VI6_DPR_NODE_RPF(1), VI6_DPR_RPF_ROUTE(1) },
+ { VI6_DPR_NODE_RPF(2), VI6_DPR_RPF_ROUTE(2) },
+ { VI6_DPR_NODE_RPF(3), VI6_DPR_RPF_ROUTE(3) },
+ { VI6_DPR_NODE_RPF(4), VI6_DPR_RPF_ROUTE(4) },
+ { VI6_DPR_NODE_UDS(0), VI6_DPR_UDS_ROUTE(0) },
+ { VI6_DPR_NODE_UDS(1), VI6_DPR_UDS_ROUTE(1) },
+ { VI6_DPR_NODE_UDS(2), VI6_DPR_UDS_ROUTE(2) },
+ { VI6_DPR_NODE_WPF(0), 0 },
+ { VI6_DPR_NODE_WPF(1), 0 },
+ { VI6_DPR_NODE_WPF(2), 0 },
+ { VI6_DPR_NODE_WPF(3), 0 },
+ };
+
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(routes); ++i) {
+ if (routes[i].id == entity->id) {
+ entity->route = routes[i].reg;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(routes))
+ return -EINVAL;
+
+ entity->vsp1 = vsp1;
+ entity->source_pad = num_pads - 1;
+
+ /* Allocate formats and pads. */
+ entity->formats = devm_kzalloc(vsp1->dev,
+ num_pads * sizeof(*entity->formats),
+ GFP_KERNEL);
+ if (entity->formats == NULL)
+ return -ENOMEM;
+
+ entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
+ GFP_KERNEL);
+ if (entity->pads == NULL)
+ return -ENOMEM;
+
+ /* Initialize pads. */
+ for (i = 0; i < num_pads - 1; ++i)
+ entity->pads[i].flags = MEDIA_PAD_FL_SINK;
+
+ entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
+
+ /* Initialize the media entity. */
+ return media_entity_init(&entity->subdev.entity, num_pads,
+ entity->pads, 0);
+}
+
+void vsp1_entity_destroy(struct vsp1_entity *entity)
+{
+ media_entity_cleanup(&entity->subdev.entity);
+}
--- /dev/null
+/*
+ * vsp1_entity.h -- R-Car VSP1 Base Entity
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_ENTITY_H__
+#define __VSP1_ENTITY_H__
+
+#include <linux/list.h>
+
+#include <media/v4l2-subdev.h>
+
+struct vsp1_device;
+
+enum vsp1_entity_type {
+ VSP1_ENTITY_LIF,
+ VSP1_ENTITY_RPF,
+ VSP1_ENTITY_UDS,
+ VSP1_ENTITY_WPF,
+};
+
+struct vsp1_entity {
+ struct vsp1_device *vsp1;
+
+ enum vsp1_entity_type type;
+ unsigned int index;
+ unsigned int id;
+ unsigned int route;
+
+ struct list_head list_dev;
+ struct list_head list_pipe;
+
+ struct media_pad *pads;
+ unsigned int source_pad;
+
+ struct media_entity *sink;
+
+ struct v4l2_subdev subdev;
+ struct v4l2_mbus_framefmt *formats;
+};
+
+static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
+{
+ return container_of(subdev, struct vsp1_entity, subdev);
+}
+
+int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
+ unsigned int num_pads);
+void vsp1_entity_destroy(struct vsp1_entity *entity);
+
+extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
+extern const struct media_entity_operations vsp1_media_ops;
+
+struct v4l2_mbus_framefmt *
+vsp1_entity_get_pad_format(struct vsp1_entity *entity,
+ struct v4l2_subdev_fh *fh,
+ unsigned int pad, u32 which);
+void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh);
+
+#endif /* __VSP1_ENTITY_H__ */
--- /dev/null
+/*
+ * vsp1_lif.c -- R-Car VSP1 LCD Controller Interface
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_lif.h"
+
+#define LIF_MIN_SIZE 2U
+#define LIF_MAX_SIZE 2048U
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_lif_read(struct vsp1_lif *lif, u32 reg)
+{
+ return vsp1_read(lif->entity.vsp1, reg);
+}
+
+static inline void vsp1_lif_write(struct vsp1_lif *lif, u32 reg, u32 data)
+{
+ vsp1_write(lif->entity.vsp1, reg, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int lif_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ const struct v4l2_mbus_framefmt *format;
+ struct vsp1_lif *lif = to_lif(subdev);
+ unsigned int hbth = 1300;
+ unsigned int obth = 400;
+ unsigned int lbth = 200;
+
+ if (!enable) {
+ vsp1_lif_write(lif, VI6_LIF_CTRL, 0);
+ return 0;
+ }
+
+ format = &lif->entity.formats[LIF_PAD_SOURCE];
+
+ obth = min(obth, (format->width + 1) / 2 * format->height - 4);
+
+ vsp1_lif_write(lif, VI6_LIF_CSBTH,
+ (hbth << VI6_LIF_CSBTH_HBTH_SHIFT) |
+ (lbth << VI6_LIF_CSBTH_LBTH_SHIFT));
+
+ vsp1_lif_write(lif, VI6_LIF_CTRL,
+ (obth << VI6_LIF_CTRL_OBTH_SHIFT) |
+ (format->code == 0 ? VI6_LIF_CTRL_CFMT : 0) |
+ VI6_LIF_CTRL_REQSEL | VI6_LIF_CTRL_LIF_EN);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+static int lif_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ static const unsigned int codes[] = {
+ V4L2_MBUS_FMT_ARGB8888_1X32,
+ V4L2_MBUS_FMT_AYUV8_1X32,
+ };
+
+ if (code->pad == LIF_PAD_SINK) {
+ if (code->index >= ARRAY_SIZE(codes))
+ return -EINVAL;
+
+ code->code = codes[code->index];
+ } else {
+ struct v4l2_mbus_framefmt *format;
+
+ /* The LIF can't perform format conversion, the sink format is
+ * always identical to the source format.
+ */
+ if (code->index)
+ return -EINVAL;
+
+ format = v4l2_subdev_get_try_format(fh, LIF_PAD_SINK);
+ code->code = format->code;
+ }
+
+ return 0;
+}
+
+static int lif_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_get_try_format(fh, LIF_PAD_SINK);
+
+ if (fse->index || fse->code != format->code)
+ return -EINVAL;
+
+ if (fse->pad == LIF_PAD_SINK) {
+ fse->min_width = LIF_MIN_SIZE;
+ fse->max_width = LIF_MAX_SIZE;
+ fse->min_height = LIF_MIN_SIZE;
+ fse->max_height = LIF_MAX_SIZE;
+ } else {
+ fse->min_width = format->width;
+ fse->max_width = format->width;
+ fse->min_height = format->height;
+ fse->max_height = format->height;
+ }
+
+ return 0;
+}
+
+static int lif_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_lif *lif = to_lif(subdev);
+
+ fmt->format = *vsp1_entity_get_pad_format(&lif->entity, fh, fmt->pad,
+ fmt->which);
+
+ return 0;
+}
+
+static int lif_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_lif *lif = to_lif(subdev);
+ struct v4l2_mbus_framefmt *format;
+
+ /* Default to YUV if the requested format is not supported. */
+ if (fmt->format.code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
+ fmt->format.code != V4L2_MBUS_FMT_AYUV8_1X32)
+ fmt->format.code = V4L2_MBUS_FMT_AYUV8_1X32;
+
+ format = vsp1_entity_get_pad_format(&lif->entity, fh, fmt->pad,
+ fmt->which);
+
+ if (fmt->pad == LIF_PAD_SOURCE) {
+ /* The LIF source format is always identical to its sink
+ * format.
+ */
+ fmt->format = *format;
+ return 0;
+ }
+
+ format->code = fmt->format.code;
+ format->width = clamp_t(unsigned int, fmt->format.width,
+ LIF_MIN_SIZE, LIF_MAX_SIZE);
+ format->height = clamp_t(unsigned int, fmt->format.height,
+ LIF_MIN_SIZE, LIF_MAX_SIZE);
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_SRGB;
+
+ fmt->format = *format;
+
+ /* Propagate the format to the source pad. */
+ format = vsp1_entity_get_pad_format(&lif->entity, fh, LIF_PAD_SOURCE,
+ fmt->which);
+ *format = fmt->format;
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops lif_video_ops = {
+ .s_stream = lif_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops lif_pad_ops = {
+ .enum_mbus_code = lif_enum_mbus_code,
+ .enum_frame_size = lif_enum_frame_size,
+ .get_fmt = lif_get_format,
+ .set_fmt = lif_set_format,
+};
+
+static struct v4l2_subdev_ops lif_ops = {
+ .video = &lif_video_ops,
+ .pad = &lif_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_lif *vsp1_lif_create(struct vsp1_device *vsp1)
+{
+ struct v4l2_subdev *subdev;
+ struct vsp1_lif *lif;
+ int ret;
+
+ lif = devm_kzalloc(vsp1->dev, sizeof(*lif), GFP_KERNEL);
+ if (lif == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ lif->entity.type = VSP1_ENTITY_LIF;
+ lif->entity.id = VI6_DPR_NODE_LIF;
+
+ ret = vsp1_entity_init(vsp1, &lif->entity, 2);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ /* Initialize the V4L2 subdev. */
+ subdev = &lif->entity.subdev;
+ v4l2_subdev_init(subdev, &lif_ops);
+
+ subdev->entity.ops = &vsp1_media_ops;
+ subdev->internal_ops = &vsp1_subdev_internal_ops;
+ snprintf(subdev->name, sizeof(subdev->name), "%s lif",
+ dev_name(vsp1->dev));
+ v4l2_set_subdevdata(subdev, lif);
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ vsp1_entity_init_formats(subdev, NULL);
+
+ return lif;
+}
--- /dev/null
+/*
+ * vsp1_lif.h -- R-Car VSP1 LCD Controller Interface
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_LIF_H__
+#define __VSP1_LIF_H__
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_entity.h"
+
+struct vsp1_device;
+
+#define LIF_PAD_SINK 0
+#define LIF_PAD_SOURCE 1
+
+struct vsp1_lif {
+ struct vsp1_entity entity;
+};
+
+static inline struct vsp1_lif *to_lif(struct v4l2_subdev *subdev)
+{
+ return container_of(subdev, struct vsp1_lif, entity.subdev);
+}
+
+struct vsp1_lif *vsp1_lif_create(struct vsp1_device *vsp1);
+
+#endif /* __VSP1_LIF_H__ */
--- /dev/null
+/*
+ * vsp1_regs.h -- R-Car VSP1 Registers Definitions
+ *
+ * Copyright (C) 2013 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __VSP1_REGS_H__
+#define __VSP1_REGS_H__
+
+/* -----------------------------------------------------------------------------
+ * General Control Registers
+ */
+
+#define VI6_CMD(n) (0x0000 + (n) * 4)
+#define VI6_CMD_STRCMD (1 << 0)
+
+#define VI6_CLK_DCSWT 0x0018
+#define VI6_CLK_DCSWT_CSTPW_MASK (0xff << 8)
+#define VI6_CLK_DCSWT_CSTPW_SHIFT 8
+#define VI6_CLK_DCSWT_CSTRW_MASK (0xff << 0)
+#define VI6_CLK_DCSWT_CSTRW_SHIFT 0
+
+#define VI6_SRESET 0x0028
+#define VI6_SRESET_SRTS(n) (1 << (n))
+
+#define VI6_STATUS 0x0038
+#define VI6_STATUS_SYS_ACT(n) (1 << ((n) + 8))
+
+#define VI6_WPF_IRQ_ENB(n) (0x0048 + (n) * 12)
+#define VI6_WFP_IRQ_ENB_DFEE (1 << 1)
+#define VI6_WFP_IRQ_ENB_FREE (1 << 0)
+
+#define VI6_WPF_IRQ_STA(n) (0x004c + (n) * 12)
+#define VI6_WFP_IRQ_STA_DFE (1 << 1)
+#define VI6_WFP_IRQ_STA_FRE (1 << 0)
+
+#define VI6_DISP_IRQ_ENB 0x0078
+#define VI6_DISP_IRQ_ENB_DSTE (1 << 8)
+#define VI6_DISP_IRQ_ENB_MAEE (1 << 5)
+#define VI6_DISP_IRQ_ENB_LNEE(n) (1 << ((n) + 4))
+
+#define VI6_DISP_IRQ_STA 0x007c
+#define VI6_DISP_IRQ_STA_DSE (1 << 8)
+#define VI6_DISP_IRQ_STA_MAE (1 << 5)
+#define VI6_DISP_IRQ_STA_LNE(n) (1 << ((n) + 4))
+
+#define VI6_WPF_LINE_COUNT(n) (0x0084 + (n) * 4)
+#define VI6_WPF_LINE_COUNT_MASK (0x1fffff << 0)
+
+/* -----------------------------------------------------------------------------
+ * Display List Control Registers
+ */
+
+#define VI6_DL_CTRL 0x0100
+#define VI6_DL_CTRL_AR_WAIT_MASK (0xffff << 16)
+#define VI6_DL_CTRL_AR_WAIT_SHIFT 16
+#define VI6_DL_CTRL_DC2 (1 << 12)
+#define VI6_DL_CTRL_DC1 (1 << 8)
+#define VI6_DL_CTRL_DC0 (1 << 4)
+#define VI6_DL_CTRL_CFM0 (1 << 2)
+#define VI6_DL_CTRL_NH0 (1 << 1)
+#define VI6_DL_CTRL_DLE (1 << 0)
+
+#define VI6_DL_HDR_ADDR(n) (0x0104 + (n) * 4)
+
+#define VI6_DL_SWAP 0x0114
+#define VI6_DL_SWAP_LWS (1 << 2)
+#define VI6_DL_SWAP_WDS (1 << 1)
+#define VI6_DL_SWAP_BTS (1 << 0)
+
+#define VI6_DL_EXT_CTRL 0x011c
+#define VI6_DL_EXT_CTRL_NWE (1 << 16)
+#define VI6_DL_EXT_CTRL_POLINT_MASK (0x3f << 8)
+#define VI6_DL_EXT_CTRL_POLINT_SHIFT 8
+#define VI6_DL_EXT_CTRL_DLPRI (1 << 5)
+#define VI6_DL_EXT_CTRL_EXPRI (1 << 4)
+#define VI6_DL_EXT_CTRL_EXT (1 << 0)
+
+#define VI6_DL_BODY_SIZE 0x0120
+#define VI6_DL_BODY_SIZE_UPD (1 << 24)
+#define VI6_DL_BODY_SIZE_BS_MASK (0x1ffff << 0)
+#define VI6_DL_BODY_SIZE_BS_SHIFT 0
+
+/* -----------------------------------------------------------------------------
+ * RPF Control Registers
+ */
+
+#define VI6_RPF_OFFSET 0x100
+
+#define VI6_RPF_SRC_BSIZE 0x0300
+#define VI6_RPF_SRC_BSIZE_BHSIZE_MASK (0x1fff << 16)
+#define VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT 16
+#define VI6_RPF_SRC_BSIZE_BVSIZE_MASK (0x1fff << 0)
+#define VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT 0
+
+#define VI6_RPF_SRC_ESIZE 0x0304
+#define VI6_RPF_SRC_ESIZE_EHSIZE_MASK (0x1fff << 16)
+#define VI6_RPF_SRC_ESIZE_EHSIZE_SHIFT 16
+#define VI6_RPF_SRC_ESIZE_EVSIZE_MASK (0x1fff << 0)
+#define VI6_RPF_SRC_ESIZE_EVSIZE_SHIFT 0
+
+#define VI6_RPF_INFMT 0x0308
+#define VI6_RPF_INFMT_VIR (1 << 28)
+#define VI6_RPF_INFMT_CIPM (1 << 16)
+#define VI6_RPF_INFMT_SPYCS (1 << 15)
+#define VI6_RPF_INFMT_SPUVS (1 << 14)
+#define VI6_RPF_INFMT_CEXT_ZERO (0 << 12)
+#define VI6_RPF_INFMT_CEXT_EXT (1 << 12)
+#define VI6_RPF_INFMT_CEXT_ONE (2 << 12)
+#define VI6_RPF_INFMT_CEXT_MASK (3 << 12)
+#define VI6_RPF_INFMT_RDTM_BT601 (0 << 9)
+#define VI6_RPF_INFMT_RDTM_BT601_EXT (1 << 9)
+#define VI6_RPF_INFMT_RDTM_BT709 (2 << 9)
+#define VI6_RPF_INFMT_RDTM_BT709_EXT (3 << 9)
+#define VI6_RPF_INFMT_RDTM_MASK (7 << 9)
+#define VI6_RPF_INFMT_CSC (1 << 8)
+#define VI6_RPF_INFMT_RDFMT_MASK (0x7f << 0)
+#define VI6_RPF_INFMT_RDFMT_SHIFT 0
+
+#define VI6_RPF_DSWAP 0x030c
+#define VI6_RPF_DSWAP_A_LLS (1 << 11)
+#define VI6_RPF_DSWAP_A_LWS (1 << 10)
+#define VI6_RPF_DSWAP_A_WDS (1 << 9)
+#define VI6_RPF_DSWAP_A_BTS (1 << 8)
+#define VI6_RPF_DSWAP_P_LLS (1 << 3)
+#define VI6_RPF_DSWAP_P_LWS (1 << 2)
+#define VI6_RPF_DSWAP_P_WDS (1 << 1)
+#define VI6_RPF_DSWAP_P_BTS (1 << 0)
+
+#define VI6_RPF_LOC 0x0310
+#define VI6_RPF_LOC_HCOORD_MASK (0x1fff << 16)
+#define VI6_RPF_LOC_HCOORD_SHIFT 16
+#define VI6_RPF_LOC_VCOORD_MASK (0x1fff << 0)
+#define VI6_RPF_LOC_VCOORD_SHIFT 0
+
+#define VI6_RPF_ALPH_SEL 0x0314
+#define VI6_RPF_ALPH_SEL_ASEL_PACKED (0 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_8B_PLANE (1 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_SELECT (2 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_1B_PLANE (3 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_FIXED (4 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_MASK (7 << 28)
+#define VI6_RPF_ALPH_SEL_ASEL_SHIFT 28
+#define VI6_RPF_ALPH_SEL_IROP_MASK (0xf << 24)
+#define VI6_RPF_ALPH_SEL_IROP_SHIFT 24
+#define VI6_RPF_ALPH_SEL_BSEL (1 << 23)
+#define VI6_RPF_ALPH_SEL_AEXT_ZERO (0 << 18)
+#define VI6_RPF_ALPH_SEL_AEXT_EXT (1 << 18)
+#define VI6_RPF_ALPH_SEL_AEXT_ONE (2 << 18)
+#define VI6_RPF_ALPH_SEL_AEXT_MASK (3 << 18)
+#define VI6_RPF_ALPH_SEL_ALPHA0_MASK (0xff << 8)
+#define VI6_RPF_ALPH_SEL_ALPHA0_SHIFT 8
+#define VI6_RPF_ALPH_SEL_ALPHA1_MASK (0xff << 0)
+#define VI6_RPF_ALPH_SEL_ALPHA1_SHIFT 0
+
+#define VI6_RPF_VRTCOL_SET 0x0318
+#define VI6_RPF_VRTCOL_SET_LAYA_MASK (0xff << 24)
+#define VI6_RPF_VRTCOL_SET_LAYA_SHIFT 24
+#define VI6_RPF_VRTCOL_SET_LAYR_MASK (0xff << 16)
+#define VI6_RPF_VRTCOL_SET_LAYR_SHIFT 16
+#define VI6_RPF_VRTCOL_SET_LAYG_MASK (0xff << 8)
+#define VI6_RPF_VRTCOL_SET_LAYG_SHIFT 8
+#define VI6_RPF_VRTCOL_SET_LAYB_MASK (0xff << 0)
+#define VI6_RPF_VRTCOL_SET_LAYB_SHIFT 0
+
+#define VI6_RPF_MSK_CTRL 0x031c
+#define VI6_RPF_MSK_CTRL_MSK_EN (1 << 24)
+#define VI6_RPF_MSK_CTRL_MGR_MASK (0xff << 16)
+#define VI6_RPF_MSK_CTRL_MGR_SHIFT 16
+#define VI6_RPF_MSK_CTRL_MGG_MASK (0xff << 8)
+#define VI6_RPF_MSK_CTRL_MGG_SHIFT 8
+#define VI6_RPF_MSK_CTRL_MGB_MASK (0xff << 0)
+#define VI6_RPF_MSK_CTRL_MGB_SHIFT 0
+
+#define VI6_RPF_MSK_SET0 0x0320
+#define VI6_RPF_MSK_SET1 0x0324
+#define VI6_RPF_MSK_SET_MSA_MASK (0xff << 24)
+#define VI6_RPF_MSK_SET_MSA_SHIFT 24
+#define VI6_RPF_MSK_SET_MSR_MASK (0xff << 16)
+#define VI6_RPF_MSK_SET_MSR_SHIFT 16
+#define VI6_RPF_MSK_SET_MSG_MASK (0xff << 8)
+#define VI6_RPF_MSK_SET_MSG_SHIFT 8
+#define VI6_RPF_MSK_SET_MSB_MASK (0xff << 0)
+#define VI6_RPF_MSK_SET_MSB_SHIFT 0
+
+#define VI6_RPF_CKEY_CTRL 0x0328
+#define VI6_RPF_CKEY_CTRL_CV (1 << 4)
+#define VI6_RPF_CKEY_CTRL_SAPE1 (1 << 1)
+#define VI6_RPF_CKEY_CTRL_SAPE0 (1 << 0)
+
+#define VI6_RPF_CKEY_SET0 0x032c
+#define VI6_RPF_CKEY_SET1 0x0330
+#define VI6_RPF_CKEY_SET_AP_MASK (0xff << 24)
+#define VI6_RPF_CKEY_SET_AP_SHIFT 24
+#define VI6_RPF_CKEY_SET_R_MASK (0xff << 16)
+#define VI6_RPF_CKEY_SET_R_SHIFT 16
+#define VI6_RPF_CKEY_SET_GY_MASK (0xff << 8)
+#define VI6_RPF_CKEY_SET_GY_SHIFT 8
+#define VI6_RPF_CKEY_SET_B_MASK (0xff << 0)
+#define VI6_RPF_CKEY_SET_B_SHIFT 0
+
+#define VI6_RPF_SRCM_PSTRIDE 0x0334
+#define VI6_RPF_SRCM_PSTRIDE_Y_SHIFT 16
+#define VI6_RPF_SRCM_PSTRIDE_C_SHIFT 0
+
+#define VI6_RPF_SRCM_ASTRIDE 0x0338
+#define VI6_RPF_SRCM_PSTRIDE_A_SHIFT 0
+
+#define VI6_RPF_SRCM_ADDR_Y 0x033c
+#define VI6_RPF_SRCM_ADDR_C0 0x0340
+#define VI6_RPF_SRCM_ADDR_C1 0x0344
+#define VI6_RPF_SRCM_ADDR_AI 0x0348
+
+/* -----------------------------------------------------------------------------
+ * WPF Control Registers
+ */
+
+#define VI6_WPF_OFFSET 0x100
+
+#define VI6_WPF_SRCRPF 0x1000
+#define VI6_WPF_SRCRPF_VIRACT_DIS (0 << 28)
+#define VI6_WPF_SRCRPF_VIRACT_SUB (1 << 28)
+#define VI6_WPF_SRCRPF_VIRACT_MST (2 << 28)
+#define VI6_WPF_SRCRPF_VIRACT_MASK (3 << 28)
+#define VI6_WPF_SRCRPF_RPF_ACT_DIS(n) (0 << ((n) * 2))
+#define VI6_WPF_SRCRPF_RPF_ACT_SUB(n) (1 << ((n) * 2))
+#define VI6_WPF_SRCRPF_RPF_ACT_MST(n) (2 << ((n) * 2))
+#define VI6_WPF_SRCRPF_RPF_ACT_MASK(n) (3 << ((n) * 2))
+
+#define VI6_WPF_HSZCLIP 0x1004
+#define VI6_WPF_VSZCLIP 0x1008
+#define VI6_WPF_SZCLIP_EN (1 << 28)
+#define VI6_WPF_SZCLIP_OFST_MASK (0xff << 16)
+#define VI6_WPF_SZCLIP_OFST_SHIFT 16
+#define VI6_WPF_SZCLIP_SIZE_MASK (0x1fff << 0)
+#define VI6_WPF_SZCLIP_SIZE_SHIFT 0
+
+#define VI6_WPF_OUTFMT 0x100c
+#define VI6_WPF_OUTFMT_PDV_MASK (0xff << 24)
+#define VI6_WPF_OUTFMT_PDV_SHIFT 24
+#define VI6_WPF_OUTFMT_PXA (1 << 23)
+#define VI6_WPF_OUTFMT_FLP (1 << 16)
+#define VI6_WPF_OUTFMT_SPYCS (1 << 15)
+#define VI6_WPF_OUTFMT_SPUVS (1 << 14)
+#define VI6_WPF_OUTFMT_DITH_DIS (0 << 12)
+#define VI6_WPF_OUTFMT_DITH_EN (3 << 12)
+#define VI6_WPF_OUTFMT_DITH_MASK (3 << 12)
+#define VI6_WPF_OUTFMT_WRTM_BT601 (0 << 9)
+#define VI6_WPF_OUTFMT_WRTM_BT601_EXT (1 << 9)
+#define VI6_WPF_OUTFMT_WRTM_BT709 (2 << 9)
+#define VI6_WPF_OUTFMT_WRTM_BT709_EXT (3 << 9)
+#define VI6_WPF_OUTFMT_WRTM_MASK (7 << 9)
+#define VI6_WPF_OUTFMT_CSC (1 << 8)
+#define VI6_WPF_OUTFMT_WRFMT_MASK (0x7f << 0)
+#define VI6_WPF_OUTFMT_WRFMT_SHIFT 0
+
+#define VI6_WPF_DSWAP 0x1010
+#define VI6_WPF_DSWAP_P_LLS (1 << 3)
+#define VI6_WPF_DSWAP_P_LWS (1 << 2)
+#define VI6_WPF_DSWAP_P_WDS (1 << 1)
+#define VI6_WPF_DSWAP_P_BTS (1 << 0)
+
+#define VI6_WPF_RNDCTRL 0x1014
+#define VI6_WPF_RNDCTRL_CBRM (1 << 28)
+#define VI6_WPF_RNDCTRL_ABRM_TRUNC (0 << 24)
+#define VI6_WPF_RNDCTRL_ABRM_ROUND (1 << 24)
+#define VI6_WPF_RNDCTRL_ABRM_THRESH (2 << 24)
+#define VI6_WPF_RNDCTRL_ABRM_MASK (3 << 24)
+#define VI6_WPF_RNDCTRL_ATHRESH_MASK (0xff << 16)
+#define VI6_WPF_RNDCTRL_ATHRESH_SHIFT 16
+#define VI6_WPF_RNDCTRL_CLMD_FULL (0 << 12)
+#define VI6_WPF_RNDCTRL_CLMD_CLIP (1 << 12)
+#define VI6_WPF_RNDCTRL_CLMD_EXT (2 << 12)
+#define VI6_WPF_RNDCTRL_CLMD_MASK (3 << 12)
+
+#define VI6_WPF_DSTM_STRIDE_Y 0x101c
+#define VI6_WPF_DSTM_STRIDE_C 0x1020
+#define VI6_WPF_DSTM_ADDR_Y 0x1024
+#define VI6_WPF_DSTM_ADDR_C0 0x1028
+#define VI6_WPF_DSTM_ADDR_C1 0x102c
+
+#define VI6_WPF_WRBCK_CTRL 0x1034
+#define VI6_WPF_WRBCK_CTRL_WBMD (1 << 0)
+
+/* -----------------------------------------------------------------------------
+ * DPR Control Registers
+ */
+
+#define VI6_DPR_RPF_ROUTE(n) (0x2000 + (n) * 4)
+
+#define VI6_DPR_WPF_FPORCH(n) (0x2014 + (n) * 4)
+#define VI6_DPR_WPF_FPORCH_FP_WPFN (5 << 8)
+
+#define VI6_DPR_SRU_ROUTE 0x2024
+#define VI6_DPR_UDS_ROUTE(n) (0x2028 + (n) * 4)
+#define VI6_DPR_LUT_ROUTE 0x203c
+#define VI6_DPR_CLU_ROUTE 0x2040
+#define VI6_DPR_HST_ROUTE 0x2044
+#define VI6_DPR_HSI_ROUTE 0x2048
+#define VI6_DPR_BRU_ROUTE 0x204c
+#define VI6_DPR_ROUTE_FXA_MASK (0xff << 8)
+#define VI6_DPR_ROUTE_FXA_SHIFT 16
+#define VI6_DPR_ROUTE_FP_MASK (0xff << 8)
+#define VI6_DPR_ROUTE_FP_SHIFT 8
+#define VI6_DPR_ROUTE_RT_MASK (0x3f << 0)
+#define VI6_DPR_ROUTE_RT_SHIFT 0
+
+#define VI6_DPR_HGO_SMPPT 0x2050
+#define VI6_DPR_HGT_SMPPT 0x2054
+#define VI6_DPR_SMPPT_TGW_MASK (7 << 8)
+#define VI6_DPR_SMPPT_TGW_SHIFT 8
+#define VI6_DPR_SMPPT_PT_MASK (0x3f << 0)
+#define VI6_DPR_SMPPT_PT_SHIFT 0
+
+#define VI6_DPR_NODE_RPF(n) (n)
+#define VI6_DPR_NODE_SRU 16
+#define VI6_DPR_NODE_UDS(n) (17 + (n))
+#define VI6_DPR_NODE_LUT 22
+#define VI6_DPR_NODE_BRU_IN(n) (23 + (n))
+#define VI6_DPR_NODE_BRU_OUT 27
+#define VI6_DPR_NODE_CLU 29
+#define VI6_DPR_NODE_HST 30
+#define VI6_DPR_NODE_HSI 31
+#define VI6_DPR_NODE_LIF 55
+#define VI6_DPR_NODE_WPF(n) (56 + (n))
+#define VI6_DPR_NODE_UNUSED 63
+
+/* -----------------------------------------------------------------------------
+ * SRU Control Registers
+ */
+
+#define VI6_SRU_CTRL0 0x2200
+#define VI6_SRU_CTRL1 0x2204
+#define VI6_SRU_CTRL2 0x2208
+
+/* -----------------------------------------------------------------------------
+ * UDS Control Registers
+ */
+
+#define VI6_UDS_OFFSET 0x100
+
+#define VI6_UDS_CTRL 0x2300
+#define VI6_UDS_CTRL_AMD (1 << 30)
+#define VI6_UDS_CTRL_FMD (1 << 29)
+#define VI6_UDS_CTRL_BLADV (1 << 28)
+#define VI6_UDS_CTRL_AON (1 << 25)
+#define VI6_UDS_CTRL_ATHON (1 << 24)
+#define VI6_UDS_CTRL_BC (1 << 20)
+#define VI6_UDS_CTRL_NE_A (1 << 19)
+#define VI6_UDS_CTRL_NE_RCR (1 << 18)
+#define VI6_UDS_CTRL_NE_GY (1 << 17)
+#define VI6_UDS_CTRL_NE_BCB (1 << 16)
+#define VI6_UDS_CTRL_TDIPC (1 << 1)
+
+#define VI6_UDS_SCALE 0x2304
+#define VI6_UDS_SCALE_HMANT_MASK (0xf << 28)
+#define VI6_UDS_SCALE_HMANT_SHIFT 28
+#define VI6_UDS_SCALE_HFRAC_MASK (0xfff << 16)
+#define VI6_UDS_SCALE_HFRAC_SHIFT 16
+#define VI6_UDS_SCALE_VMANT_MASK (0xf << 12)
+#define VI6_UDS_SCALE_VMANT_SHIFT 12
+#define VI6_UDS_SCALE_VFRAC_MASK (0xfff << 0)
+#define VI6_UDS_SCALE_VFRAC_SHIFT 0
+
+#define VI6_UDS_ALPTH 0x2308
+#define VI6_UDS_ALPTH_TH1_MASK (0xff << 8)
+#define VI6_UDS_ALPTH_TH1_SHIFT 8
+#define VI6_UDS_ALPTH_TH0_MASK (0xff << 0)
+#define VI6_UDS_ALPTH_TH0_SHIFT 0
+
+#define VI6_UDS_ALPVAL 0x230c
+#define VI6_UDS_ALPVAL_VAL2_MASK (0xff << 16)
+#define VI6_UDS_ALPVAL_VAL2_SHIFT 16
+#define VI6_UDS_ALPVAL_VAL1_MASK (0xff << 8)
+#define VI6_UDS_ALPVAL_VAL1_SHIFT 8
+#define VI6_UDS_ALPVAL_VAL0_MASK (0xff << 0)
+#define VI6_UDS_ALPVAL_VAL0_SHIFT 0
+
+#define VI6_UDS_PASS_BWIDTH 0x2310
+#define VI6_UDS_PASS_BWIDTH_H_MASK (0x7f << 16)
+#define VI6_UDS_PASS_BWIDTH_H_SHIFT 16
+#define VI6_UDS_PASS_BWIDTH_V_MASK (0x7f << 0)
+#define VI6_UDS_PASS_BWIDTH_V_SHIFT 0
+
+#define VI6_UDS_IPC 0x2318
+#define VI6_UDS_IPC_FIELD (1 << 27)
+#define VI6_UDS_IPC_VEDP_MASK (0xfff << 0)
+#define VI6_UDS_IPC_VEDP_SHIFT 0
+
+#define VI6_UDS_CLIP_SIZE 0x2324
+#define VI6_UDS_CLIP_SIZE_HSIZE_MASK (0x1fff << 16)
+#define VI6_UDS_CLIP_SIZE_HSIZE_SHIFT 16
+#define VI6_UDS_CLIP_SIZE_VSIZE_MASK (0x1fff << 0)
+#define VI6_UDS_CLIP_SIZE_VSIZE_SHIFT 0
+
+#define VI6_UDS_FILL_COLOR 0x2328
+#define VI6_UDS_FILL_COLOR_RFILC_MASK (0xff << 16)
+#define VI6_UDS_FILL_COLOR_RFILC_SHIFT 16
+#define VI6_UDS_FILL_COLOR_GFILC_MASK (0xff << 8)
+#define VI6_UDS_FILL_COLOR_GFILC_SHIFT 8
+#define VI6_UDS_FILL_COLOR_BFILC_MASK (0xff << 0)
+#define VI6_UDS_FILL_COLOR_BFILC_SHIFT 0
+
+/* -----------------------------------------------------------------------------
+ * LUT Control Registers
+ */
+
+#define VI6_LUT_CTRL 0x2800
+
+/* -----------------------------------------------------------------------------
+ * CLU Control Registers
+ */
+
+#define VI6_CLU_CTRL 0x2900
+
+/* -----------------------------------------------------------------------------
+ * HST Control Registers
+ */
+
+#define VI6_HST_CTRL 0x2a00
+
+/* -----------------------------------------------------------------------------
+ * HSI Control Registers
+ */
+
+#define VI6_HSI_CTRL 0x2b00
+
+/* -----------------------------------------------------------------------------
+ * BRU Control Registers
+ */
+
+#define VI6_BRU_INCTRL 0x2c00
+#define VI6_BRU_VIRRPF_SIZE 0x2c04
+#define VI6_BRU_VIRRPF_LOC 0x2c08
+#define VI6_BRU_VIRRPF_COL 0x2c0c
+#define VI6_BRU_CTRL(n) (0x2c10 + (n) * 8)
+#define VI6_BRU_BLD(n) (0x2c14 + (n) * 8)
+#define VI6_BRU_ROP 0x2c30
+
+/* -----------------------------------------------------------------------------
+ * HGO Control Registers
+ */
+
+#define VI6_HGO_OFFSET 0x3000
+#define VI6_HGO_SIZE 0x3004
+#define VI6_HGO_MODE 0x3008
+#define VI6_HGO_LB_TH 0x300c
+#define VI6_HGO_LBn_H(n) (0x3010 + (n) * 8)
+#define VI6_HGO_LBn_V(n) (0x3014 + (n) * 8)
+#define VI6_HGO_R_HISTO 0x3030
+#define VI6_HGO_R_MAXMIN 0x3130
+#define VI6_HGO_R_SUM 0x3134
+#define VI6_HGO_R_LB_DET 0x3138
+#define VI6_HGO_G_HISTO 0x3140
+#define VI6_HGO_G_MAXMIN 0x3240
+#define VI6_HGO_G_SUM 0x3244
+#define VI6_HGO_G_LB_DET 0x3248
+#define VI6_HGO_B_HISTO 0x3250
+#define VI6_HGO_B_MAXMIN 0x3350
+#define VI6_HGO_B_SUM 0x3354
+#define VI6_HGO_B_LB_DET 0x3358
+#define VI6_HGO_REGRST 0x33fc
+
+/* -----------------------------------------------------------------------------
+ * HGT Control Registers
+ */
+
+#define VI6_HGT_OFFSET 0x3400
+#define VI6_HGT_SIZE 0x3404
+#define VI6_HGT_MODE 0x3408
+#define VI6_HGT_HUE_AREA(n) (0x340c + (n) * 4)
+#define VI6_HGT_LB_TH 0x3424
+#define VI6_HGT_LBn_H(n) (0x3438 + (n) * 8)
+#define VI6_HGT_LBn_V(n) (0x342c + (n) * 8)
+#define VI6_HGT_HISTO(m, n) (0x3450 + (m) * 128 + (n) * 4)
+#define VI6_HGT_MAXMIN 0x3750
+#define VI6_HGT_SUM 0x3754
+#define VI6_HGT_LB_DET 0x3758
+#define VI6_HGT_REGRST 0x37fc
+
+/* -----------------------------------------------------------------------------
+ * LIF Control Registers
+ */
+
+#define VI6_LIF_CTRL 0x3b00
+#define VI6_LIF_CTRL_OBTH_MASK (0x7ff << 16)
+#define VI6_LIF_CTRL_OBTH_SHIFT 16
+#define VI6_LIF_CTRL_CFMT (1 << 4)
+#define VI6_LIF_CTRL_REQSEL (1 << 1)
+#define VI6_LIF_CTRL_LIF_EN (1 << 0)
+
+#define VI6_LIF_CSBTH 0x3b04
+#define VI6_LIF_CSBTH_HBTH_MASK (0x7ff << 16)
+#define VI6_LIF_CSBTH_HBTH_SHIFT 16
+#define VI6_LIF_CSBTH_LBTH_MASK (0x7ff << 0)
+#define VI6_LIF_CSBTH_LBTH_SHIFT 0
+
+/* -----------------------------------------------------------------------------
+ * Security Control Registers
+ */
+
+#define VI6_SECURITY_CTRL0 0x3d00
+#define VI6_SECURITY_CTRL1 0x3d04
+
+/* -----------------------------------------------------------------------------
+ * RPF CLUT Registers
+ */
+
+#define VI6_CLUT_TABLE 0x4000
+
+/* -----------------------------------------------------------------------------
+ * 1D LUT Registers
+ */
+
+#define VI6_LUT_TABLE 0x7000
+
+/* -----------------------------------------------------------------------------
+ * 3D LUT Registers
+ */
+
+#define VI6_CLU_ADDR 0x7400
+#define VI6_CLU_DATA 0x7404
+
+/* -----------------------------------------------------------------------------
+ * Formats
+ */
+
+#define VI6_FMT_RGB_332 0x00
+#define VI6_FMT_XRGB_4444 0x01
+#define VI6_FMT_RGBX_4444 0x02
+#define VI6_FMT_XRGB_1555 0x04
+#define VI6_FMT_RGBX_5551 0x05
+#define VI6_FMT_RGB_565 0x06
+#define VI6_FMT_AXRGB_86666 0x07
+#define VI6_FMT_RGBXA_66668 0x08
+#define VI6_FMT_XRGBA_66668 0x09
+#define VI6_FMT_ARGBX_86666 0x0a
+#define VI6_FMT_AXRXGXB_8262626 0x0b
+#define VI6_FMT_XRXGXBA_2626268 0x0c
+#define VI6_FMT_ARXGXBX_8626262 0x0d
+#define VI6_FMT_RXGXBXA_6262628 0x0e
+#define VI6_FMT_XRGB_6666 0x0f
+#define VI6_FMT_RGBX_6666 0x10
+#define VI6_FMT_XRXGXB_262626 0x11
+#define VI6_FMT_RXGXBX_626262 0x12
+#define VI6_FMT_ARGB_8888 0x13
+#define VI6_FMT_RGBA_8888 0x14
+#define VI6_FMT_RGB_888 0x15
+#define VI6_FMT_XRGXGB_763763 0x16
+#define VI6_FMT_XXRGB_86666 0x17
+#define VI6_FMT_BGR_888 0x18
+#define VI6_FMT_ARGB_4444 0x19
+#define VI6_FMT_RGBA_4444 0x1a
+#define VI6_FMT_ARGB_1555 0x1b
+#define VI6_FMT_RGBA_5551 0x1c
+#define VI6_FMT_ABGR_4444 0x1d
+#define VI6_FMT_BGRA_4444 0x1e
+#define VI6_FMT_ABGR_1555 0x1f
+#define VI6_FMT_BGRA_5551 0x20
+#define VI6_FMT_XBXGXR_262626 0x21
+#define VI6_FMT_ABGR_8888 0x22
+#define VI6_FMT_XXRGB_88565 0x23
+
+#define VI6_FMT_Y_UV_444 0x40
+#define VI6_FMT_Y_UV_422 0x41
+#define VI6_FMT_Y_UV_420 0x42
+#define VI6_FMT_YUV_444 0x46
+#define VI6_FMT_YUYV_422 0x47
+#define VI6_FMT_YYUV_422 0x48
+#define VI6_FMT_YUV_420 0x49
+#define VI6_FMT_Y_U_V_444 0x4a
+#define VI6_FMT_Y_U_V_422 0x4b
+#define VI6_FMT_Y_U_V_420 0x4c
+
+#endif /* __VSP1_REGS_H__ */
--- /dev/null
+/*
+ * vsp1_rpf.c -- R-Car VSP1 Read Pixel Formatter
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/device.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define RPF_MAX_WIDTH 8190
+#define RPF_MAX_HEIGHT 8190
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_rpf_read(struct vsp1_rwpf *rpf, u32 reg)
+{
+ return vsp1_read(rpf->entity.vsp1,
+ reg + rpf->entity.index * VI6_RPF_OFFSET);
+}
+
+static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf, u32 reg, u32 data)
+{
+ vsp1_write(rpf->entity.vsp1,
+ reg + rpf->entity.index * VI6_RPF_OFFSET, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int rpf_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ struct vsp1_rwpf *rpf = to_rwpf(subdev);
+ const struct vsp1_format_info *fmtinfo = rpf->video.fmtinfo;
+ const struct v4l2_pix_format_mplane *format = &rpf->video.format;
+ u32 pstride;
+ u32 infmt;
+
+ if (!enable)
+ return 0;
+
+ /* Source size and stride. Cropping isn't supported yet. */
+ vsp1_rpf_write(rpf, VI6_RPF_SRC_BSIZE,
+ (format->width << VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT) |
+ (format->height << VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT));
+ vsp1_rpf_write(rpf, VI6_RPF_SRC_ESIZE,
+ (format->width << VI6_RPF_SRC_ESIZE_EHSIZE_SHIFT) |
+ (format->height << VI6_RPF_SRC_ESIZE_EVSIZE_SHIFT));
+
+ pstride = format->plane_fmt[0].bytesperline
+ << VI6_RPF_SRCM_PSTRIDE_Y_SHIFT;
+ if (format->num_planes > 1)
+ pstride |= format->plane_fmt[1].bytesperline
+ << VI6_RPF_SRCM_PSTRIDE_C_SHIFT;
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_PSTRIDE, pstride);
+
+ /* Format */
+ infmt = VI6_RPF_INFMT_CIPM
+ | (fmtinfo->hwfmt << VI6_RPF_INFMT_RDFMT_SHIFT);
+
+ if (fmtinfo->swap_yc)
+ infmt |= VI6_RPF_INFMT_SPYCS;
+ if (fmtinfo->swap_uv)
+ infmt |= VI6_RPF_INFMT_SPUVS;
+
+ if (rpf->entity.formats[RWPF_PAD_SINK].code !=
+ rpf->entity.formats[RWPF_PAD_SOURCE].code)
+ infmt |= VI6_RPF_INFMT_CSC;
+
+ vsp1_rpf_write(rpf, VI6_RPF_INFMT, infmt);
+ vsp1_rpf_write(rpf, VI6_RPF_DSWAP, fmtinfo->swap);
+
+ /* Output location. Composing isn't supported yet. */
+ vsp1_rpf_write(rpf, VI6_RPF_LOC, 0);
+
+ /* Disable alpha, mask and color key. Set the alpha channel to a fixed
+ * value of 255.
+ */
+ vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_ASEL_FIXED);
+ vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET,
+ 255 << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
+ vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0);
+ vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops rpf_video_ops = {
+ .s_stream = rpf_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops rpf_pad_ops = {
+ .enum_mbus_code = vsp1_rwpf_enum_mbus_code,
+ .enum_frame_size = vsp1_rwpf_enum_frame_size,
+ .get_fmt = vsp1_rwpf_get_format,
+ .set_fmt = vsp1_rwpf_set_format,
+};
+
+static struct v4l2_subdev_ops rpf_ops = {
+ .video = &rpf_video_ops,
+ .pad = &rpf_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Video Device Operations
+ */
+
+static void rpf_vdev_queue(struct vsp1_video *video,
+ struct vsp1_video_buffer *buf)
+{
+ struct vsp1_rwpf *rpf = container_of(video, struct vsp1_rwpf, video);
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_Y, buf->addr[0]);
+ if (buf->buf.num_planes > 1)
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C0, buf->addr[1]);
+ if (buf->buf.num_planes > 2)
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C1, buf->addr[2]);
+}
+
+static const struct vsp1_video_operations rpf_vdev_ops = {
+ .queue = rpf_vdev_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
+{
+ struct v4l2_subdev *subdev;
+ struct vsp1_video *video;
+ struct vsp1_rwpf *rpf;
+ int ret;
+
+ rpf = devm_kzalloc(vsp1->dev, sizeof(*rpf), GFP_KERNEL);
+ if (rpf == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ rpf->max_width = RPF_MAX_WIDTH;
+ rpf->max_height = RPF_MAX_HEIGHT;
+
+ rpf->entity.type = VSP1_ENTITY_RPF;
+ rpf->entity.index = index;
+ rpf->entity.id = VI6_DPR_NODE_RPF(index);
+
+ ret = vsp1_entity_init(vsp1, &rpf->entity, 2);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ /* Initialize the V4L2 subdev. */
+ subdev = &rpf->entity.subdev;
+ v4l2_subdev_init(subdev, &rpf_ops);
+
+ subdev->entity.ops = &vsp1_media_ops;
+ subdev->internal_ops = &vsp1_subdev_internal_ops;
+ snprintf(subdev->name, sizeof(subdev->name), "%s rpf.%u",
+ dev_name(vsp1->dev), index);
+ v4l2_set_subdevdata(subdev, rpf);
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ vsp1_entity_init_formats(subdev, NULL);
+
+ /* Initialize the video device. */
+ video = &rpf->video;
+
+ video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ video->vsp1 = vsp1;
+ video->ops = &rpf_vdev_ops;
+
+ ret = vsp1_video_init(video, &rpf->entity);
+ if (ret < 0)
+ goto error_video;
+
+ /* Connect the video device to the RPF. */
+ ret = media_entity_create_link(&rpf->video.video.entity, 0,
+ &rpf->entity.subdev.entity,
+ RWPF_PAD_SINK,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret < 0)
+ goto error_link;
+
+ return rpf;
+
+error_link:
+ vsp1_video_cleanup(video);
+error_video:
+ media_entity_cleanup(&rpf->entity.subdev.entity);
+ return ERR_PTR(ret);
+}
--- /dev/null
+/*
+ * vsp1_rwpf.c -- R-Car VSP1 Read and Write Pixel Formatters
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define RWPF_MIN_WIDTH 1
+#define RWPF_MIN_HEIGHT 1
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ static const unsigned int codes[] = {
+ V4L2_MBUS_FMT_ARGB8888_1X32,
+ V4L2_MBUS_FMT_AYUV8_1X32,
+ };
+
+ if (code->index >= ARRAY_SIZE(codes))
+ return -EINVAL;
+
+ code->code = codes[code->index];
+
+ return 0;
+}
+
+int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_get_try_format(fh, fse->pad);
+
+ if (fse->index || fse->code != format->code)
+ return -EINVAL;
+
+ if (fse->pad == RWPF_PAD_SINK) {
+ fse->min_width = RWPF_MIN_WIDTH;
+ fse->max_width = rwpf->max_width;
+ fse->min_height = RWPF_MIN_HEIGHT;
+ fse->max_height = rwpf->max_height;
+ } else {
+ /* The size on the source pad are fixed and always identical to
+ * the size on the sink pad.
+ */
+ fse->min_width = format->width;
+ fse->max_width = format->width;
+ fse->min_height = format->height;
+ fse->max_height = format->height;
+ }
+
+ return 0;
+}
+
+int vsp1_rwpf_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+
+ fmt->format = *vsp1_entity_get_pad_format(&rwpf->entity, fh, fmt->pad,
+ fmt->which);
+
+ return 0;
+}
+
+int vsp1_rwpf_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+ struct v4l2_mbus_framefmt *format;
+
+ /* Default to YUV if the requested format is not supported. */
+ if (fmt->format.code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
+ fmt->format.code != V4L2_MBUS_FMT_AYUV8_1X32)
+ fmt->format.code = V4L2_MBUS_FMT_AYUV8_1X32;
+
+ format = vsp1_entity_get_pad_format(&rwpf->entity, fh, fmt->pad,
+ fmt->which);
+
+ if (fmt->pad == RWPF_PAD_SOURCE) {
+ /* The RWPF performs format conversion but can't scale, only the
+ * format code can be changed on the source pad.
+ */
+ format->code = fmt->format.code;
+ fmt->format = *format;
+ return 0;
+ }
+
+ format->code = fmt->format.code;
+ format->width = clamp_t(unsigned int, fmt->format.width,
+ RWPF_MIN_WIDTH, rwpf->max_width);
+ format->height = clamp_t(unsigned int, fmt->format.height,
+ RWPF_MIN_HEIGHT, rwpf->max_height);
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_SRGB;
+
+ fmt->format = *format;
+
+ /* Propagate the format to the source pad. */
+ format = vsp1_entity_get_pad_format(&rwpf->entity, fh, RWPF_PAD_SOURCE,
+ fmt->which);
+ *format = fmt->format;
+
+ return 0;
+}
--- /dev/null
+/*
+ * vsp1_rwpf.h -- R-Car VSP1 Read and Write Pixel Formatters
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_RWPF_H__
+#define __VSP1_RWPF_H__
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_entity.h"
+#include "vsp1_video.h"
+
+#define RWPF_PAD_SINK 0
+#define RWPF_PAD_SOURCE 1
+
+struct vsp1_rwpf {
+ struct vsp1_entity entity;
+ struct vsp1_video video;
+
+ unsigned int max_width;
+ unsigned int max_height;
+};
+
+static inline struct vsp1_rwpf *to_rwpf(struct v4l2_subdev *subdev)
+{
+ return container_of(subdev, struct vsp1_rwpf, entity.subdev);
+}
+
+struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index);
+struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index);
+
+int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code);
+int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse);
+int vsp1_rwpf_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt);
+int vsp1_rwpf_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt);
+
+#endif /* __VSP1_RWPF_H__ */
--- /dev/null
+/*
+ * vsp1_uds.c -- R-Car VSP1 Up and Down Scaler
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_uds.h"
+
+#define UDS_MIN_SIZE 4U
+#define UDS_MAX_SIZE 8190U
+
+#define UDS_MIN_FACTOR 0x0100
+#define UDS_MAX_FACTOR 0xffff
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_uds_read(struct vsp1_uds *uds, u32 reg)
+{
+ return vsp1_read(uds->entity.vsp1,
+ reg + uds->entity.index * VI6_UDS_OFFSET);
+}
+
+static inline void vsp1_uds_write(struct vsp1_uds *uds, u32 reg, u32 data)
+{
+ vsp1_write(uds->entity.vsp1,
+ reg + uds->entity.index * VI6_UDS_OFFSET, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * Scaling Computation
+ */
+
+/*
+ * uds_output_size - Return the output size for an input size and scaling ratio
+ * @input: input size in pixels
+ * @ratio: scaling ratio in U4.12 fixed-point format
+ */
+static unsigned int uds_output_size(unsigned int input, unsigned int ratio)
+{
+ if (ratio > 4096) {
+ /* Down-scaling */
+ unsigned int mp;
+
+ mp = ratio / 4096;
+ mp = mp < 4 ? 1 : (mp < 8 ? 2 : 4);
+
+ return (input - 1) / mp * mp * 4096 / ratio + 1;
+ } else {
+ /* Up-scaling */
+ return (input - 1) * 4096 / ratio + 1;
+ }
+}
+
+/*
+ * uds_output_limits - Return the min and max output sizes for an input size
+ * @input: input size in pixels
+ * @minimum: minimum output size (returned)
+ * @maximum: maximum output size (returned)
+ */
+static void uds_output_limits(unsigned int input,
+ unsigned int *minimum, unsigned int *maximum)
+{
+ *minimum = max(uds_output_size(input, UDS_MAX_FACTOR), UDS_MIN_SIZE);
+ *maximum = min(uds_output_size(input, UDS_MIN_FACTOR), UDS_MAX_SIZE);
+}
+
+/*
+ * uds_passband_width - Return the passband filter width for a scaling ratio
+ * @ratio: scaling ratio in U4.12 fixed-point format
+ */
+static unsigned int uds_passband_width(unsigned int ratio)
+{
+ if (ratio >= 4096) {
+ /* Down-scaling */
+ unsigned int mp;
+
+ mp = ratio / 4096;
+ mp = mp < 4 ? 1 : (mp < 8 ? 2 : 4);
+
+ return 64 * 4096 * mp / ratio;
+ } else {
+ /* Up-scaling */
+ return 64;
+ }
+}
+
+static unsigned int uds_compute_ratio(unsigned int input, unsigned int output)
+{
+ /* TODO: This is an approximation that will need to be refined. */
+ return (input - 1) * 4096 / (output - 1);
+}
+
+static void uds_compute_ratios(struct vsp1_uds *uds)
+{
+ struct v4l2_mbus_framefmt *input = &uds->entity.formats[UDS_PAD_SINK];
+ struct v4l2_mbus_framefmt *output =
+ &uds->entity.formats[UDS_PAD_SOURCE];
+
+ uds->hscale = uds_compute_ratio(input->width, output->width);
+ uds->vscale = uds_compute_ratio(input->height, output->height);
+
+ dev_dbg(uds->entity.vsp1->dev, "hscale %u vscale %u\n",
+ uds->hscale, uds->vscale);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int uds_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ const struct v4l2_mbus_framefmt *format;
+ struct vsp1_uds *uds = to_uds(subdev);
+
+ if (!enable)
+ return 0;
+
+ /* Enable multi-tap scaling. */
+ vsp1_uds_write(uds, VI6_UDS_CTRL, VI6_UDS_CTRL_BC);
+
+ vsp1_uds_write(uds, VI6_UDS_PASS_BWIDTH,
+ (uds_passband_width(uds->hscale)
+ << VI6_UDS_PASS_BWIDTH_H_SHIFT) |
+ (uds_passband_width(uds->vscale)
+ << VI6_UDS_PASS_BWIDTH_V_SHIFT));
+
+
+ /* Set the scaling ratios and the output size. */
+ format = &uds->entity.formats[UDS_PAD_SOURCE];
+
+ vsp1_uds_write(uds, VI6_UDS_SCALE,
+ (uds->hscale << VI6_UDS_SCALE_HFRAC_SHIFT) |
+ (uds->vscale << VI6_UDS_SCALE_VFRAC_SHIFT));
+ vsp1_uds_write(uds, VI6_UDS_CLIP_SIZE,
+ (format->width << VI6_UDS_CLIP_SIZE_HSIZE_SHIFT) |
+ (format->height << VI6_UDS_CLIP_SIZE_VSIZE_SHIFT));
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+static int uds_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ static const unsigned int codes[] = {
+ V4L2_MBUS_FMT_ARGB8888_1X32,
+ V4L2_MBUS_FMT_AYUV8_1X32,
+ };
+
+ if (code->pad == UDS_PAD_SINK) {
+ if (code->index >= ARRAY_SIZE(codes))
+ return -EINVAL;
+
+ code->code = codes[code->index];
+ } else {
+ struct v4l2_mbus_framefmt *format;
+
+ /* The UDS can't perform format conversion, the sink format is
+ * always identical to the source format.
+ */
+ if (code->index)
+ return -EINVAL;
+
+ format = v4l2_subdev_get_try_format(fh, UDS_PAD_SINK);
+ code->code = format->code;
+ }
+
+ return 0;
+}
+
+static int uds_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_get_try_format(fh, UDS_PAD_SINK);
+
+ if (fse->index || fse->code != format->code)
+ return -EINVAL;
+
+ if (fse->pad == UDS_PAD_SINK) {
+ fse->min_width = UDS_MIN_SIZE;
+ fse->max_width = UDS_MAX_SIZE;
+ fse->min_height = UDS_MIN_SIZE;
+ fse->max_height = UDS_MAX_SIZE;
+ } else {
+ uds_output_limits(format->width, &fse->min_width,
+ &fse->max_width);
+ uds_output_limits(format->height, &fse->min_height,
+ &fse->max_height);
+ }
+
+ return 0;
+}
+
+static int uds_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_uds *uds = to_uds(subdev);
+
+ fmt->format = *vsp1_entity_get_pad_format(&uds->entity, fh, fmt->pad,
+ fmt->which);
+
+ return 0;
+}
+
+static void uds_try_format(struct vsp1_uds *uds, struct v4l2_subdev_fh *fh,
+ unsigned int pad, struct v4l2_mbus_framefmt *fmt,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_mbus_framefmt *format;
+ unsigned int minimum;
+ unsigned int maximum;
+
+ switch (pad) {
+ case UDS_PAD_SINK:
+ /* Default to YUV if the requested format is not supported. */
+ if (fmt->code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
+ fmt->code != V4L2_MBUS_FMT_AYUV8_1X32)
+ fmt->code = V4L2_MBUS_FMT_AYUV8_1X32;
+
+ fmt->width = clamp(fmt->width, UDS_MIN_SIZE, UDS_MAX_SIZE);
+ fmt->height = clamp(fmt->height, UDS_MIN_SIZE, UDS_MAX_SIZE);
+ break;
+
+ case UDS_PAD_SOURCE:
+ /* The UDS scales but can't perform format conversion. */
+ format = vsp1_entity_get_pad_format(&uds->entity, fh,
+ UDS_PAD_SINK, which);
+ fmt->code = format->code;
+
+ uds_output_limits(format->width, &minimum, &maximum);
+ fmt->width = clamp(fmt->width, minimum, maximum);
+ uds_output_limits(format->height, &minimum, &maximum);
+ fmt->height = clamp(fmt->height, minimum, maximum);
+ break;
+ }
+
+ fmt->field = V4L2_FIELD_NONE;
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+}
+
+static int uds_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_uds *uds = to_uds(subdev);
+ struct v4l2_mbus_framefmt *format;
+
+ uds_try_format(uds, fh, fmt->pad, &fmt->format, fmt->which);
+
+ format = vsp1_entity_get_pad_format(&uds->entity, fh, fmt->pad,
+ fmt->which);
+ *format = fmt->format;
+
+ if (fmt->pad == UDS_PAD_SINK) {
+ /* Propagate the format to the source pad. */
+ format = vsp1_entity_get_pad_format(&uds->entity, fh,
+ UDS_PAD_SOURCE, fmt->which);
+ *format = fmt->format;
+
+ uds_try_format(uds, fh, UDS_PAD_SOURCE, format, fmt->which);
+ }
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ uds_compute_ratios(uds);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops uds_video_ops = {
+ .s_stream = uds_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops uds_pad_ops = {
+ .enum_mbus_code = uds_enum_mbus_code,
+ .enum_frame_size = uds_enum_frame_size,
+ .get_fmt = uds_get_format,
+ .set_fmt = uds_set_format,
+};
+
+static struct v4l2_subdev_ops uds_ops = {
+ .video = &uds_video_ops,
+ .pad = &uds_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_uds *vsp1_uds_create(struct vsp1_device *vsp1, unsigned int index)
+{
+ struct v4l2_subdev *subdev;
+ struct vsp1_uds *uds;
+ int ret;
+
+ uds = devm_kzalloc(vsp1->dev, sizeof(*uds), GFP_KERNEL);
+ if (uds == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ uds->entity.type = VSP1_ENTITY_UDS;
+ uds->entity.index = index;
+ uds->entity.id = VI6_DPR_NODE_UDS(index);
+
+ ret = vsp1_entity_init(vsp1, &uds->entity, 2);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ /* Initialize the V4L2 subdev. */
+ subdev = &uds->entity.subdev;
+ v4l2_subdev_init(subdev, &uds_ops);
+
+ subdev->entity.ops = &vsp1_media_ops;
+ subdev->internal_ops = &vsp1_subdev_internal_ops;
+ snprintf(subdev->name, sizeof(subdev->name), "%s uds.%u",
+ dev_name(vsp1->dev), index);
+ v4l2_set_subdevdata(subdev, uds);
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ vsp1_entity_init_formats(subdev, NULL);
+
+ return uds;
+}
--- /dev/null
+/*
+ * vsp1_uds.h -- R-Car VSP1 Up and Down Scaler
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_UDS_H__
+#define __VSP1_UDS_H__
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_entity.h"
+
+struct vsp1_device;
+
+#define UDS_PAD_SINK 0
+#define UDS_PAD_SOURCE 1
+
+struct vsp1_uds {
+ struct vsp1_entity entity;
+
+ unsigned int hscale;
+ unsigned int vscale;
+};
+
+static inline struct vsp1_uds *to_uds(struct v4l2_subdev *subdev)
+{
+ return container_of(subdev, struct vsp1_uds, entity.subdev);
+}
+
+struct vsp1_uds *vsp1_uds_create(struct vsp1_device *vsp1, unsigned int index);
+
+#endif /* __VSP1_UDS_H__ */
--- /dev/null
+/*
+ * vsp1_video.c -- R-Car VSP1 Video Node
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/videodev2.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-subdev.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "vsp1.h"
+#include "vsp1_entity.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
+#define VSP1_VIDEO_DEF_WIDTH 1024
+#define VSP1_VIDEO_DEF_HEIGHT 768
+
+#define VSP1_VIDEO_MIN_WIDTH 2U
+#define VSP1_VIDEO_MAX_WIDTH 8190U
+#define VSP1_VIDEO_MIN_HEIGHT 2U
+#define VSP1_VIDEO_MAX_HEIGHT 8190U
+
+/* -----------------------------------------------------------------------------
+ * Helper functions
+ */
+
+static const struct vsp1_format_info vsp1_video_formats[] = {
+ { V4L2_PIX_FMT_RGB332, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 8, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_RGB444, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS,
+ 1, { 16, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_RGB555, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS,
+ 1, { 16, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_RGB565, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS,
+ 1, { 16, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_BGR24, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_BGR_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 24, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_RGB24, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 24, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_BGR32, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
+ 1, { 32, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_RGB32, V4L2_MBUS_FMT_ARGB8888_1X32,
+ VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 32, 0, 0 }, false, false, 1, 1 },
+ { V4L2_PIX_FMT_UYVY, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 16, 0, 0 }, false, false, 2, 1 },
+ { V4L2_PIX_FMT_VYUY, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 16, 0, 0 }, false, true, 2, 1 },
+ { V4L2_PIX_FMT_YUYV, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 16, 0, 0 }, true, false, 2, 1 },
+ { V4L2_PIX_FMT_YVYU, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 1, { 16, 0, 0 }, true, true, 2, 1 },
+ { V4L2_PIX_FMT_NV12M, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 2, { 8, 16, 0 }, false, false, 2, 2 },
+ { V4L2_PIX_FMT_NV21M, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 2, { 8, 16, 0 }, false, true, 2, 2 },
+ { V4L2_PIX_FMT_NV16M, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 2, { 8, 16, 0 }, false, false, 2, 1 },
+ { V4L2_PIX_FMT_NV61M, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 2, { 8, 16, 0 }, false, true, 2, 1 },
+ { V4L2_PIX_FMT_YUV420M, V4L2_MBUS_FMT_AYUV8_1X32,
+ VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
+ VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
+ 3, { 8, 8, 8 }, false, false, 2, 2 },
+};
+
+/*
+ * vsp1_get_format_info - Retrieve format information for a 4CC
+ * @fourcc: the format 4CC
+ *
+ * Return a pointer to the format information structure corresponding to the
+ * given V4L2 format 4CC, or NULL if no corresponding format can be found.
+ */
+static const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
+ const struct vsp1_format_info *info = &vsp1_video_formats[i];
+
+ if (info->fourcc == fourcc)
+ return info;
+ }
+
+ return NULL;
+}
+
+
+static struct v4l2_subdev *
+vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
+{
+ struct media_pad *remote;
+
+ remote = media_entity_remote_pad(local);
+ if (remote == NULL ||
+ media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+ return NULL;
+
+ if (pad)
+ *pad = remote->index;
+
+ return media_entity_to_v4l2_subdev(remote->entity);
+}
+
+static int vsp1_video_verify_format(struct vsp1_video *video)
+{
+ struct v4l2_subdev_format fmt;
+ struct v4l2_subdev *subdev;
+ int ret;
+
+ subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
+ if (subdev == NULL)
+ return -EINVAL;
+
+ fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
+ if (ret < 0)
+ return ret == -ENOIOCTLCMD ? -EINVAL : ret;
+
+ if (video->fmtinfo->mbus != fmt.format.code ||
+ video->format.height != fmt.format.height ||
+ video->format.width != fmt.format.width)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int __vsp1_video_try_format(struct vsp1_video *video,
+ struct v4l2_pix_format_mplane *pix,
+ const struct vsp1_format_info **fmtinfo)
+{
+ const struct vsp1_format_info *info;
+ unsigned int width = pix->width;
+ unsigned int height = pix->height;
+ unsigned int i;
+
+ /* Retrieve format information and select the default format if the
+ * requested format isn't supported.
+ */
+ info = vsp1_get_format_info(pix->pixelformat);
+ if (info == NULL)
+ info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
+
+ pix->pixelformat = info->fourcc;
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ pix->field = V4L2_FIELD_NONE;
+ memset(pix->reserved, 0, sizeof(pix->reserved));
+
+ /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
+ width = round_down(width, info->hsub);
+ height = round_down(height, info->vsub);
+
+ /* Clamp the width and height. */
+ pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
+ pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
+ VSP1_VIDEO_MAX_HEIGHT);
+
+ /* Compute and clamp the stride and image size. While not documented in
+ * the datasheet, strides not aligned to a multiple of 128 bytes result
+ * in image corruption.
+ */
+ for (i = 0; i < max(info->planes, 2U); ++i) {
+ unsigned int hsub = i > 0 ? info->hsub : 1;
+ unsigned int vsub = i > 0 ? info->vsub : 1;
+ unsigned int align = 128;
+ unsigned int bpl;
+
+ bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
+ pix->width / hsub * info->bpp[i] / 8,
+ round_down(65535U, align));
+
+ pix->plane_fmt[i].bytesperline = round_up(bpl, align);
+ pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
+ * pix->height / vsub;
+ }
+
+ if (info->planes == 3) {
+ /* The second and third planes must have the same stride. */
+ pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
+ pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
+ }
+
+ pix->num_planes = info->planes;
+
+ if (fmtinfo)
+ *fmtinfo = info;
+
+ return 0;
+}
+
+static bool
+vsp1_video_format_adjust(struct vsp1_video *video,
+ const struct v4l2_pix_format_mplane *format,
+ struct v4l2_pix_format_mplane *adjust)
+{
+ unsigned int i;
+
+ *adjust = *format;
+ __vsp1_video_try_format(video, adjust, NULL);
+
+ if (format->width != adjust->width ||
+ format->height != adjust->height ||
+ format->pixelformat != adjust->pixelformat ||
+ format->num_planes != adjust->num_planes)
+ return false;
+
+ for (i = 0; i < format->num_planes; ++i) {
+ if (format->plane_fmt[i].bytesperline !=
+ adjust->plane_fmt[i].bytesperline)
+ return false;
+
+ adjust->plane_fmt[i].sizeimage =
+ max(adjust->plane_fmt[i].sizeimage,
+ format->plane_fmt[i].sizeimage);
+ }
+
+ return true;
+}
+
+/* -----------------------------------------------------------------------------
+ * Pipeline Management
+ */
+
+static int vsp1_pipeline_validate_branch(struct vsp1_rwpf *input,
+ struct vsp1_rwpf *output)
+{
+ struct vsp1_entity *entity;
+ unsigned int entities = 0;
+ struct media_pad *pad;
+ bool uds_found = false;
+
+ pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
+
+ while (1) {
+ if (pad == NULL)
+ return -EPIPE;
+
+ /* We've reached a video node, that shouldn't have happened. */
+ if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+ return -EPIPE;
+
+ entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
+
+ /* We've reached the WPF, we're done. */
+ if (entity->type == VSP1_ENTITY_WPF)
+ break;
+
+ /* Ensure the branch has no loop. */
+ if (entities & (1 << entity->subdev.entity.id))
+ return -EPIPE;
+
+ entities |= 1 << entity->subdev.entity.id;
+
+ /* UDS can't be chained. */
+ if (entity->type == VSP1_ENTITY_UDS) {
+ if (uds_found)
+ return -EPIPE;
+ uds_found = true;
+ }
+
+ /* Follow the source link. The link setup operations ensure
+ * that the output fan-out can't be more than one, there is thus
+ * no need to verify here that only a single source link is
+ * activated.
+ */
+ pad = &entity->pads[entity->source_pad];
+ pad = media_entity_remote_pad(pad);
+ }
+
+ /* The last entity must be the output WPF. */
+ if (entity != &output->entity)
+ return -EPIPE;
+
+ return 0;
+}
+
+static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
+ struct vsp1_video *video)
+{
+ struct media_entity_graph graph;
+ struct media_entity *entity = &video->video.entity;
+ struct media_device *mdev = entity->parent;
+ unsigned int i;
+ int ret;
+
+ mutex_lock(&mdev->graph_mutex);
+
+ /* Walk the graph to locate the entities and video nodes. */
+ media_entity_graph_walk_start(&graph, entity);
+
+ while ((entity = media_entity_graph_walk_next(&graph))) {
+ struct v4l2_subdev *subdev;
+ struct vsp1_rwpf *rwpf;
+ struct vsp1_entity *e;
+
+ if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
+ pipe->num_video++;
+ continue;
+ }
+
+ subdev = media_entity_to_v4l2_subdev(entity);
+ e = to_vsp1_entity(subdev);
+ list_add_tail(&e->list_pipe, &pipe->entities);
+
+ if (e->type == VSP1_ENTITY_RPF) {
+ rwpf = to_rwpf(subdev);
+ pipe->inputs[pipe->num_inputs++] = rwpf;
+ rwpf->video.pipe_index = pipe->num_inputs;
+ } else if (e->type == VSP1_ENTITY_WPF) {
+ rwpf = to_rwpf(subdev);
+ pipe->output = to_rwpf(subdev);
+ rwpf->video.pipe_index = 0;
+ } else if (e->type == VSP1_ENTITY_LIF) {
+ pipe->lif = e;
+ }
+ }
+
+ mutex_unlock(&mdev->graph_mutex);
+
+ /* We need one output and at least one input. */
+ if (pipe->num_inputs == 0 || !pipe->output) {
+ ret = -EPIPE;
+ goto error;
+ }
+
+ /* Follow links downstream for each input and make sure the graph
+ * contains no loop and that all branches end at the output WPF.
+ */
+ for (i = 0; i < pipe->num_inputs; ++i) {
+ ret = vsp1_pipeline_validate_branch(pipe->inputs[i],
+ pipe->output);
+ if (ret < 0)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ INIT_LIST_HEAD(&pipe->entities);
+ pipe->buffers_ready = 0;
+ pipe->num_video = 0;
+ pipe->num_inputs = 0;
+ pipe->output = NULL;
+ pipe->lif = NULL;
+ return ret;
+}
+
+static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
+ struct vsp1_video *video)
+{
+ int ret;
+
+ mutex_lock(&pipe->lock);
+
+ /* If we're the first user validate and initialize the pipeline. */
+ if (pipe->use_count == 0) {
+ ret = vsp1_pipeline_validate(pipe, video);
+ if (ret < 0)
+ goto done;
+ }
+
+ pipe->use_count++;
+ ret = 0;
+
+done:
+ mutex_unlock(&pipe->lock);
+ return ret;
+}
+
+static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
+{
+ mutex_lock(&pipe->lock);
+
+ /* If we're the last user clean up the pipeline. */
+ if (--pipe->use_count == 0) {
+ INIT_LIST_HEAD(&pipe->entities);
+ pipe->state = VSP1_PIPELINE_STOPPED;
+ pipe->buffers_ready = 0;
+ pipe->num_video = 0;
+ pipe->num_inputs = 0;
+ pipe->output = NULL;
+ pipe->lif = NULL;
+ }
+
+ mutex_unlock(&pipe->lock);
+}
+
+static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
+{
+ struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
+
+ vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
+ pipe->state = VSP1_PIPELINE_RUNNING;
+ pipe->buffers_ready = 0;
+}
+
+static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
+{
+ struct vsp1_entity *entity;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+ pipe->state = VSP1_PIPELINE_STOPPING;
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+
+ ret = wait_event_timeout(pipe->wq, pipe->state == VSP1_PIPELINE_STOPPED,
+ msecs_to_jiffies(500));
+ ret = ret == 0 ? -ETIMEDOUT : 0;
+
+ list_for_each_entry(entity, &pipe->entities, list_pipe) {
+ if (entity->route)
+ vsp1_write(entity->vsp1, entity->route,
+ VI6_DPR_NODE_UNUSED);
+
+ v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
+ }
+
+ return ret;
+}
+
+static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
+{
+ unsigned int mask;
+
+ mask = ((1 << pipe->num_inputs) - 1) << 1;
+ if (!pipe->lif)
+ mask |= 1 << 0;
+
+ return pipe->buffers_ready == mask;
+}
+
+/*
+ * vsp1_video_complete_buffer - Complete the current buffer
+ * @video: the video node
+ *
+ * This function completes the current buffer by filling its sequence number,
+ * time stamp and payload size, and hands it back to the videobuf core.
+ *
+ * Return the next queued buffer or NULL if the queue is empty.
+ */
+static struct vsp1_video_buffer *
+vsp1_video_complete_buffer(struct vsp1_video *video)
+{
+ struct vsp1_video_buffer *next = NULL;
+ struct vsp1_video_buffer *done;
+ unsigned long flags;
+ unsigned int i;
+
+ spin_lock_irqsave(&video->irqlock, flags);
+
+ if (list_empty(&video->irqqueue)) {
+ spin_unlock_irqrestore(&video->irqlock, flags);
+ return NULL;
+ }
+
+ done = list_first_entry(&video->irqqueue,
+ struct vsp1_video_buffer, queue);
+ list_del(&done->queue);
+
+ if (!list_empty(&video->irqqueue))
+ next = list_first_entry(&video->irqqueue,
+ struct vsp1_video_buffer, queue);
+
+ spin_unlock_irqrestore(&video->irqlock, flags);
+
+ done->buf.v4l2_buf.sequence = video->sequence++;
+ v4l2_get_timestamp(&done->buf.v4l2_buf.timestamp);
+ for (i = 0; i < done->buf.num_planes; ++i)
+ vb2_set_plane_payload(&done->buf, i, done->length[i]);
+ vb2_buffer_done(&done->buf, VB2_BUF_STATE_DONE);
+
+ return next;
+}
+
+static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
+ struct vsp1_video *video)
+{
+ struct vsp1_video_buffer *buf;
+ unsigned long flags;
+
+ buf = vsp1_video_complete_buffer(video);
+ if (buf == NULL)
+ return;
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+
+ video->ops->queue(video, buf);
+ pipe->buffers_ready |= 1 << video->pipe_index;
+
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+}
+
+void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
+{
+ unsigned long flags;
+ unsigned int i;
+
+ if (pipe == NULL)
+ return;
+
+ /* Complete buffers on all video nodes. */
+ for (i = 0; i < pipe->num_inputs; ++i)
+ vsp1_video_frame_end(pipe, &pipe->inputs[i]->video);
+
+ if (!pipe->lif)
+ vsp1_video_frame_end(pipe, &pipe->output->video);
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+
+ /* If a stop has been requested, mark the pipeline as stopped and
+ * return.
+ */
+ if (pipe->state == VSP1_PIPELINE_STOPPING) {
+ pipe->state = VSP1_PIPELINE_STOPPED;
+ wake_up(&pipe->wq);
+ goto done;
+ }
+
+ /* Restart the pipeline if ready. */
+ if (vsp1_pipeline_ready(pipe))
+ vsp1_pipeline_run(pipe);
+
+done:
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+}
+
+/* -----------------------------------------------------------------------------
+ * videobuf2 Queue Operations
+ */
+
+static int
+vsp1_video_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct vsp1_video *video = vb2_get_drv_priv(vq);
+ const struct v4l2_pix_format_mplane *format;
+ struct v4l2_pix_format_mplane pix_mp;
+ unsigned int i;
+
+ if (fmt) {
+ /* Make sure the format is valid and adjust the sizeimage field
+ * if needed.
+ */
+ if (!vsp1_video_format_adjust(video, &fmt->fmt.pix_mp, &pix_mp))
+ return -EINVAL;
+
+ format = &pix_mp;
+ } else {
+ format = &video->format;
+ }
+
+ *nplanes = format->num_planes;
+
+ for (i = 0; i < format->num_planes; ++i) {
+ sizes[i] = format->plane_fmt[i].sizeimage;
+ alloc_ctxs[i] = video->alloc_ctx;
+ }
+
+ return 0;
+}
+
+static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
+ struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
+ const struct v4l2_pix_format_mplane *format = &video->format;
+ unsigned int i;
+
+ if (vb->num_planes < format->num_planes)
+ return -EINVAL;
+
+ buf->video = video;
+
+ for (i = 0; i < vb->num_planes; ++i) {
+ buf->addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
+ buf->length[i] = vb2_plane_size(vb, i);
+
+ if (buf->length[i] < format->plane_fmt[i].sizeimage)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
+{
+ struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
+ struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
+ struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
+ unsigned long flags;
+ bool empty;
+
+ spin_lock_irqsave(&video->irqlock, flags);
+ empty = list_empty(&video->irqqueue);
+ list_add_tail(&buf->queue, &video->irqqueue);
+ spin_unlock_irqrestore(&video->irqlock, flags);
+
+ if (!empty)
+ return;
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+
+ video->ops->queue(video, buf);
+ pipe->buffers_ready |= 1 << video->pipe_index;
+
+ if (vb2_is_streaming(&video->queue) &&
+ vsp1_pipeline_ready(pipe))
+ vsp1_pipeline_run(pipe);
+
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+}
+
+static void vsp1_entity_route_setup(struct vsp1_entity *source)
+{
+ struct vsp1_entity *sink;
+
+ if (source->route == 0)
+ return;
+
+ sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
+ vsp1_write(source->vsp1, source->route, sink->id);
+}
+
+static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct vsp1_video *video = vb2_get_drv_priv(vq);
+ struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
+ struct vsp1_entity *entity;
+ unsigned long flags;
+ int ret;
+
+ mutex_lock(&pipe->lock);
+ if (pipe->stream_count == pipe->num_video - 1) {
+ list_for_each_entry(entity, &pipe->entities, list_pipe) {
+ vsp1_entity_route_setup(entity);
+
+ ret = v4l2_subdev_call(&entity->subdev, video,
+ s_stream, 1);
+ if (ret < 0) {
+ mutex_unlock(&pipe->lock);
+ return ret;
+ }
+ }
+ }
+
+ pipe->stream_count++;
+ mutex_unlock(&pipe->lock);
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+ if (vsp1_pipeline_ready(pipe))
+ vsp1_pipeline_run(pipe);
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+
+ return 0;
+}
+
+static int vsp1_video_stop_streaming(struct vb2_queue *vq)
+{
+ struct vsp1_video *video = vb2_get_drv_priv(vq);
+ struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
+ unsigned long flags;
+ int ret;
+
+ mutex_lock(&pipe->lock);
+ if (--pipe->stream_count == 0) {
+ /* Stop the pipeline. */
+ ret = vsp1_pipeline_stop(pipe);
+ if (ret == -ETIMEDOUT)
+ dev_err(video->vsp1->dev, "pipeline stop timeout\n");
+ }
+ mutex_unlock(&pipe->lock);
+
+ vsp1_pipeline_cleanup(pipe);
+ media_entity_pipeline_stop(&video->video.entity);
+
+ /* Remove all buffers from the IRQ queue. */
+ spin_lock_irqsave(&video->irqlock, flags);
+ INIT_LIST_HEAD(&video->irqqueue);
+ spin_unlock_irqrestore(&video->irqlock, flags);
+
+ return 0;
+}
+
+static struct vb2_ops vsp1_video_queue_qops = {
+ .queue_setup = vsp1_video_queue_setup,
+ .buf_prepare = vsp1_video_buffer_prepare,
+ .buf_queue = vsp1_video_buffer_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = vsp1_video_start_streaming,
+ .stop_streaming = vsp1_video_stop_streaming,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 ioctls
+ */
+
+static int
+vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
+{
+ struct v4l2_fh *vfh = file->private_data;
+ struct vsp1_video *video = to_vsp1_video(vfh->vdev);
+
+ cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
+ | V4L2_CAP_VIDEO_CAPTURE_MPLANE
+ | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
+
+ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
+ | V4L2_CAP_STREAMING;
+ else
+ cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
+ | V4L2_CAP_STREAMING;
+
+ strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
+ strlcpy(cap->card, video->video.name, sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(video->vsp1->dev));
+
+ return 0;
+}
+
+static int
+vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
+{
+ struct v4l2_fh *vfh = file->private_data;
+ struct vsp1_video *video = to_vsp1_video(vfh->vdev);
+
+ if (format->type != video->queue.type)
+ return -EINVAL;
+
+ mutex_lock(&video->lock);
+ format->fmt.pix_mp = video->format;
+ mutex_unlock(&video->lock);
+
+ return 0;
+}
+
+static int
+vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
+{
+ struct v4l2_fh *vfh = file->private_data;
+ struct vsp1_video *video = to_vsp1_video(vfh->vdev);
+
+ if (format->type != video->queue.type)
+ return -EINVAL;
+
+ return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
+}
+
+static int
+vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
+{
+ struct v4l2_fh *vfh = file->private_data;
+ struct vsp1_video *video = to_vsp1_video(vfh->vdev);
+ const struct vsp1_format_info *info;
+ int ret;
+
+ if (format->type != video->queue.type)
+ return -EINVAL;
+
+ ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&video->lock);
+
+ if (vb2_is_busy(&video->queue)) {
+ ret = -EBUSY;
+ goto done;
+ }
+
+ video->format = format->fmt.pix_mp;
+ video->fmtinfo = info;
+
+done:
+ mutex_unlock(&video->lock);
+ return ret;
+}
+
+static int
+vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
+{
+ struct v4l2_fh *vfh = file->private_data;
+ struct vsp1_video *video = to_vsp1_video(vfh->vdev);
+ struct vsp1_pipeline *pipe;
+ int ret;
+
+ mutex_lock(&video->lock);
+
+ if (video->queue.owner && video->queue.owner != file->private_data)
+ return -EBUSY;
+
+ video->sequence = 0;
+
+ /* Start streaming on the pipeline. No link touching an entity in the
+ * pipeline can be activated or deactivated once streaming is started.
+ *
+ * Use the VSP1 pipeline object embedded in the first video object that
+ * starts streaming.
+ */
+ pipe = video->video.entity.pipe
+ ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
+
+ ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
+ if (ret < 0)
+ return ret;
+
+ /* Verify that the configured format matches the output of the connected
+ * subdev.
+ */
+ ret = vsp1_video_verify_format(video);
+ if (ret < 0)
+ goto err_stop;
+
+ ret = vsp1_pipeline_init(pipe, video);
+ if (ret < 0)
+ goto err_stop;
+
+ /* Start the queue. */
+ ret = vb2_streamon(&video->queue, type);
+ if (ret < 0)
+ goto err_cleanup;
+
+ return 0;
+
+err_cleanup:
+ vsp1_pipeline_cleanup(pipe);
+err_stop:
+ media_entity_pipeline_stop(&video->video.entity);
+ return ret;
+}
+
+static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
+ .vidioc_querycap = vsp1_video_querycap,
+ .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
+ .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
+ .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
+ .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
+ .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
+ .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_streamon = vsp1_video_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 File Operations
+ */
+
+static int vsp1_video_open(struct file *file)
+{
+ struct vsp1_video *video = video_drvdata(file);
+ struct v4l2_fh *vfh;
+ int ret = 0;
+
+ vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
+ if (vfh == NULL)
+ return -ENOMEM;
+
+ v4l2_fh_init(vfh, &video->video);
+ v4l2_fh_add(vfh);
+
+ file->private_data = vfh;
+
+ if (!vsp1_device_get(video->vsp1)) {
+ ret = -EBUSY;
+ v4l2_fh_del(vfh);
+ kfree(vfh);
+ }
+
+ return ret;
+}
+
+static int vsp1_video_release(struct file *file)
+{
+ struct vsp1_video *video = video_drvdata(file);
+ struct v4l2_fh *vfh = file->private_data;
+
+ mutex_lock(&video->lock);
+ if (video->queue.owner == vfh) {
+ vb2_queue_release(&video->queue);
+ video->queue.owner = NULL;
+ }
+ mutex_unlock(&video->lock);
+
+ vsp1_device_put(video->vsp1);
+
+ v4l2_fh_release(file);
+
+ file->private_data = NULL;
+
+ return 0;
+}
+
+static struct v4l2_file_operations vsp1_video_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = video_ioctl2,
+ .open = vsp1_video_open,
+ .release = vsp1_video_release,
+ .poll = vb2_fop_poll,
+ .mmap = vb2_fop_mmap,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
+{
+ const char *direction;
+ int ret;
+
+ switch (video->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ direction = "output";
+ video->pad.flags = MEDIA_PAD_FL_SINK;
+ break;
+
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ direction = "input";
+ video->pad.flags = MEDIA_PAD_FL_SOURCE;
+ video->video.vfl_dir = VFL_DIR_TX;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ video->rwpf = rwpf;
+
+ mutex_init(&video->lock);
+ spin_lock_init(&video->irqlock);
+ INIT_LIST_HEAD(&video->irqqueue);
+
+ mutex_init(&video->pipe.lock);
+ spin_lock_init(&video->pipe.irqlock);
+ INIT_LIST_HEAD(&video->pipe.entities);
+ init_waitqueue_head(&video->pipe.wq);
+ video->pipe.state = VSP1_PIPELINE_STOPPED;
+
+ /* Initialize the media entity... */
+ ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
+ if (ret < 0)
+ return ret;
+
+ /* ... and the format ... */
+ video->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
+ video->format.pixelformat = video->fmtinfo->fourcc;
+ video->format.colorspace = V4L2_COLORSPACE_SRGB;
+ video->format.field = V4L2_FIELD_NONE;
+ video->format.width = VSP1_VIDEO_DEF_WIDTH;
+ video->format.height = VSP1_VIDEO_DEF_HEIGHT;
+ video->format.num_planes = 1;
+ video->format.plane_fmt[0].bytesperline =
+ video->format.width * video->fmtinfo->bpp[0] / 8;
+ video->format.plane_fmt[0].sizeimage =
+ video->format.plane_fmt[0].bytesperline * video->format.height;
+
+ /* ... and the video node... */
+ video->video.v4l2_dev = &video->vsp1->v4l2_dev;
+ video->video.fops = &vsp1_video_fops;
+ snprintf(video->video.name, sizeof(video->video.name), "%s %s",
+ rwpf->subdev.name, direction);
+ video->video.vfl_type = VFL_TYPE_GRABBER;
+ video->video.release = video_device_release_empty;
+ video->video.ioctl_ops = &vsp1_video_ioctl_ops;
+
+ video_set_drvdata(&video->video, video);
+
+ /* ... and the buffers queue... */
+ video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
+ if (IS_ERR(video->alloc_ctx))
+ goto error;
+
+ video->queue.type = video->type;
+ video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ video->queue.lock = &video->lock;
+ video->queue.drv_priv = video;
+ video->queue.buf_struct_size = sizeof(struct vsp1_video_buffer);
+ video->queue.ops = &vsp1_video_queue_qops;
+ video->queue.mem_ops = &vb2_dma_contig_memops;
+ video->queue.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ ret = vb2_queue_init(&video->queue);
+ if (ret < 0) {
+ dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
+ goto error;
+ }
+
+ /* ... and register the video device. */
+ video->video.queue = &video->queue;
+ ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
+ if (ret < 0) {
+ dev_err(video->vsp1->dev, "failed to register video device\n");
+ goto error;
+ }
+
+ return 0;
+
+error:
+ vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
+ vsp1_video_cleanup(video);
+ return ret;
+}
+
+void vsp1_video_cleanup(struct vsp1_video *video)
+{
+ if (video_is_registered(&video->video))
+ video_unregister_device(&video->video);
+
+ vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
+ media_entity_cleanup(&video->video.entity);
+}
--- /dev/null
+/*
+ * vsp1_video.h -- R-Car VSP1 Video Node
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_VIDEO_H__
+#define __VSP1_VIDEO_H__
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+
+#include <media/media-entity.h>
+#include <media/videobuf2-core.h>
+
+struct vsp1_video;
+
+/*
+ * struct vsp1_format_info - VSP1 video format description
+ * @mbus: media bus format code
+ * @fourcc: V4L2 pixel format FCC identifier
+ * @planes: number of planes
+ * @bpp: bits per pixel
+ * @hwfmt: VSP1 hardware format
+ * @swap_yc: the Y and C components are swapped (Y comes before C)
+ * @swap_uv: the U and V components are swapped (V comes before U)
+ * @hsub: horizontal subsampling factor
+ * @vsub: vertical subsampling factor
+ */
+struct vsp1_format_info {
+ u32 fourcc;
+ unsigned int mbus;
+ unsigned int hwfmt;
+ unsigned int swap;
+ unsigned int planes;
+ unsigned int bpp[3];
+ bool swap_yc;
+ bool swap_uv;
+ unsigned int hsub;
+ unsigned int vsub;
+};
+
+enum vsp1_pipeline_state {
+ VSP1_PIPELINE_STOPPED,
+ VSP1_PIPELINE_RUNNING,
+ VSP1_PIPELINE_STOPPING,
+};
+
+/*
+ * struct vsp1_pipeline - A VSP1 hardware pipeline
+ * @media: the media pipeline
+ * @irqlock: protects the pipeline state
+ * @lock: protects the pipeline use count and stream count
+ */
+struct vsp1_pipeline {
+ struct media_pipeline pipe;
+
+ spinlock_t irqlock;
+ enum vsp1_pipeline_state state;
+ wait_queue_head_t wq;
+
+ struct mutex lock;
+ unsigned int use_count;
+ unsigned int stream_count;
+ unsigned int buffers_ready;
+
+ unsigned int num_video;
+ unsigned int num_inputs;
+ struct vsp1_rwpf *inputs[VPS1_MAX_RPF];
+ struct vsp1_rwpf *output;
+ struct vsp1_entity *lif;
+
+ struct list_head entities;
+};
+
+static inline struct vsp1_pipeline *to_vsp1_pipeline(struct media_entity *e)
+{
+ if (likely(e->pipe))
+ return container_of(e->pipe, struct vsp1_pipeline, pipe);
+ else
+ return NULL;
+}
+
+struct vsp1_video_buffer {
+ struct vsp1_video *video;
+ struct vb2_buffer buf;
+ struct list_head queue;
+
+ dma_addr_t addr[3];
+ unsigned int length[3];
+};
+
+static inline struct vsp1_video_buffer *
+to_vsp1_video_buffer(struct vb2_buffer *vb)
+{
+ return container_of(vb, struct vsp1_video_buffer, buf);
+}
+
+struct vsp1_video_operations {
+ void (*queue)(struct vsp1_video *video, struct vsp1_video_buffer *buf);
+};
+
+struct vsp1_video {
+ struct vsp1_device *vsp1;
+ struct vsp1_entity *rwpf;
+
+ const struct vsp1_video_operations *ops;
+
+ struct video_device video;
+ enum v4l2_buf_type type;
+ struct media_pad pad;
+
+ struct mutex lock;
+ struct v4l2_pix_format_mplane format;
+ const struct vsp1_format_info *fmtinfo;
+
+ struct vsp1_pipeline pipe;
+ unsigned int pipe_index;
+
+ struct vb2_queue queue;
+ void *alloc_ctx;
+ spinlock_t irqlock;
+ struct list_head irqqueue;
+ unsigned int sequence;
+};
+
+static inline struct vsp1_video *to_vsp1_video(struct video_device *vdev)
+{
+ return container_of(vdev, struct vsp1_video, video);
+}
+
+int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf);
+void vsp1_video_cleanup(struct vsp1_video *video);
+
+void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
+
+#endif /* __VSP1_VIDEO_H__ */
--- /dev/null
+/*
+ * vsp1_wpf.c -- R-Car VSP1 Write Pixel Formatter
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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.
+ */
+
+#include <linux/device.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define WPF_MAX_WIDTH 2048
+#define WPF_MAX_HEIGHT 2048
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_wpf_read(struct vsp1_rwpf *wpf, u32 reg)
+{
+ return vsp1_read(wpf->entity.vsp1,
+ reg + wpf->entity.index * VI6_WPF_OFFSET);
+}
+
+static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, u32 reg, u32 data)
+{
+ vsp1_write(wpf->entity.vsp1,
+ reg + wpf->entity.index * VI6_WPF_OFFSET, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ struct vsp1_rwpf *wpf = to_rwpf(subdev);
+ struct vsp1_pipeline *pipe =
+ to_vsp1_pipeline(&wpf->entity.subdev.entity);
+ struct vsp1_device *vsp1 = wpf->entity.vsp1;
+ const struct v4l2_mbus_framefmt *format =
+ &wpf->entity.formats[RWPF_PAD_SOURCE];
+ unsigned int i;
+ u32 srcrpf = 0;
+ u32 outfmt = 0;
+
+ if (!enable) {
+ vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
+ return 0;
+ }
+
+ /* Sources */
+ for (i = 0; i < pipe->num_inputs; ++i) {
+ struct vsp1_rwpf *input = pipe->inputs[i];
+
+ srcrpf |= VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index);
+ }
+
+ vsp1_wpf_write(wpf, VI6_WPF_SRCRPF, srcrpf);
+
+ /* Destination stride. Cropping isn't supported yet. */
+ if (!pipe->lif) {
+ struct v4l2_pix_format_mplane *format = &wpf->video.format;
+
+ vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_Y,
+ format->plane_fmt[0].bytesperline);
+ if (format->num_planes > 1)
+ vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_C,
+ format->plane_fmt[1].bytesperline);
+ }
+
+ vsp1_wpf_write(wpf, VI6_WPF_HSZCLIP,
+ format->width << VI6_WPF_SZCLIP_SIZE_SHIFT);
+ vsp1_wpf_write(wpf, VI6_WPF_VSZCLIP,
+ format->height << VI6_WPF_SZCLIP_SIZE_SHIFT);
+
+ /* Format */
+ if (!pipe->lif) {
+ const struct vsp1_format_info *fmtinfo = wpf->video.fmtinfo;
+
+ outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
+
+ if (fmtinfo->swap_yc)
+ outfmt |= VI6_WPF_OUTFMT_SPYCS;
+ if (fmtinfo->swap_uv)
+ outfmt |= VI6_WPF_OUTFMT_SPUVS;
+
+ vsp1_wpf_write(wpf, VI6_WPF_DSWAP, fmtinfo->swap);
+ }
+
+ if (wpf->entity.formats[RWPF_PAD_SINK].code !=
+ wpf->entity.formats[RWPF_PAD_SOURCE].code)
+ outfmt |= VI6_WPF_OUTFMT_CSC;
+
+ vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt);
+
+ vsp1_write(vsp1, VI6_DPR_WPF_FPORCH(wpf->entity.index),
+ VI6_DPR_WPF_FPORCH_FP_WPFN);
+
+ vsp1_write(vsp1, VI6_WPF_WRBCK_CTRL, 0);
+
+ /* Enable interrupts */
+ vsp1_write(vsp1, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
+ vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index),
+ VI6_WFP_IRQ_ENB_FREE);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops wpf_video_ops = {
+ .s_stream = wpf_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops wpf_pad_ops = {
+ .enum_mbus_code = vsp1_rwpf_enum_mbus_code,
+ .enum_frame_size = vsp1_rwpf_enum_frame_size,
+ .get_fmt = vsp1_rwpf_get_format,
+ .set_fmt = vsp1_rwpf_set_format,
+};
+
+static struct v4l2_subdev_ops wpf_ops = {
+ .video = &wpf_video_ops,
+ .pad = &wpf_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Video Device Operations
+ */
+
+static void wpf_vdev_queue(struct vsp1_video *video,
+ struct vsp1_video_buffer *buf)
+{
+ struct vsp1_rwpf *wpf = container_of(video, struct vsp1_rwpf, video);
+
+ vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_Y, buf->addr[0]);
+ if (buf->buf.num_planes > 1)
+ vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C0, buf->addr[1]);
+ if (buf->buf.num_planes > 2)
+ vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C1, buf->addr[2]);
+}
+
+static const struct vsp1_video_operations wpf_vdev_ops = {
+ .queue = wpf_vdev_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
+{
+ struct v4l2_subdev *subdev;
+ struct vsp1_video *video;
+ struct vsp1_rwpf *wpf;
+ unsigned int flags;
+ int ret;
+
+ wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
+ if (wpf == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ wpf->max_width = WPF_MAX_WIDTH;
+ wpf->max_height = WPF_MAX_HEIGHT;
+
+ wpf->entity.type = VSP1_ENTITY_WPF;
+ wpf->entity.index = index;
+ wpf->entity.id = VI6_DPR_NODE_WPF(index);
+
+ ret = vsp1_entity_init(vsp1, &wpf->entity, 2);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ /* Initialize the V4L2 subdev. */
+ subdev = &wpf->entity.subdev;
+ v4l2_subdev_init(subdev, &wpf_ops);
+
+ subdev->entity.ops = &vsp1_media_ops;
+ subdev->internal_ops = &vsp1_subdev_internal_ops;
+ snprintf(subdev->name, sizeof(subdev->name), "%s wpf.%u",
+ dev_name(vsp1->dev), index);
+ v4l2_set_subdevdata(subdev, wpf);
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ vsp1_entity_init_formats(subdev, NULL);
+
+ /* Initialize the video device. */
+ video = &wpf->video;
+
+ video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ video->vsp1 = vsp1;
+ video->ops = &wpf_vdev_ops;
+
+ ret = vsp1_video_init(video, &wpf->entity);
+ if (ret < 0)
+ goto error_video;
+
+ /* Connect the video device to the WPF. All connections are immutable
+ * except for the WPF0 source link if a LIF is present.
+ */
+ flags = MEDIA_LNK_FL_ENABLED;
+ if (!(vsp1->pdata->features & VSP1_HAS_LIF) || index != 0)
+ flags |= MEDIA_LNK_FL_IMMUTABLE;
+
+ ret = media_entity_create_link(&wpf->entity.subdev.entity,
+ RWPF_PAD_SOURCE,
+ &wpf->video.video.entity, 0, flags);
+ if (ret < 0)
+ goto error_link;
+
+ wpf->entity.sink = &wpf->video.video.entity;
+
+ return wpf;
+
+error_link:
+ vsp1_video_cleanup(video);
+error_video:
+ media_entity_cleanup(&wpf->entity.subdev.entity);
+ return ERR_PTR(ret);
+}
--- /dev/null
+/*
+ * vsp1.h -- R-Car VSP1 Platform Data
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __PLATFORM_VSP1_H__
+#define __PLATFORM_VSP1_H__
+
+#define VSP1_HAS_LIF (1 << 0)
+
+struct vsp1_platform_data {
+ unsigned int features;
+ unsigned int rpf_count;
+ unsigned int uds_count;
+ unsigned int wpf_count;
+};
+
+#endif /* __PLATFORM_VSP1_H__ */
git.openpandora.org / pandora-kernel.git / commitdiff