[media] v4l: vsp1: Add HST and HSI support
authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Wed, 10 Jul 2013 20:30:14 +0000 (17:30 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Wed, 11 Dec 2013 11:22:44 +0000 (09:22 -0200)
The Hue Saturation value Transform and Hue Saturation value Inverse
transform entities convert from RGB to HSV and back.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
drivers/media/platform/vsp1/Makefile
drivers/media/platform/vsp1/vsp1.h
drivers/media/platform/vsp1/vsp1_drv.c
drivers/media/platform/vsp1/vsp1_entity.c
drivers/media/platform/vsp1/vsp1_entity.h
drivers/media/platform/vsp1/vsp1_hsit.c [new file with mode: 0644]
drivers/media/platform/vsp1/vsp1_hsit.h [new file with mode: 0644]
drivers/media/platform/vsp1/vsp1_regs.h

index 4da226169e154f3c15380d232c6293461b818a25..587b8009b35757af79e490f07ba2d13e2ad6e8ed 100644 (file)
@@ -1,5 +1,5 @@
 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
+vsp1-y                                 += vsp1_hsit.o vsp1_lif.o vsp1_uds.o
 
 obj-$(CONFIG_VIDEO_RENESAS_VSP1)       += vsp1.o
index d6c6ecd039fff7df6503225de92ab96002a9776c..275286e0bf42d759e453e7c28a7bb7094cb79640 100644 (file)
@@ -28,6 +28,7 @@ struct clk;
 struct device;
 
 struct vsp1_platform_data;
+struct vsp1_hsit;
 struct vsp1_lif;
 struct vsp1_rwpf;
 struct vsp1_uds;
@@ -47,6 +48,8 @@ struct vsp1_device {
        struct mutex lock;
        int ref_count;
 
+       struct vsp1_hsit *hsi;
+       struct vsp1_hsit *hst;
        struct vsp1_lif *lif;
        struct vsp1_rwpf *rpf[VPS1_MAX_RPF];
        struct vsp1_uds *uds[VPS1_MAX_UDS];
index d16bf0f41e247bd69e3af1ebdc31e0309861e0fd..bcede46c4a952e1b9dc8811f2076c9a42f066474 100644 (file)
@@ -20,6 +20,7 @@
 #include <linux/videodev2.h>
 
 #include "vsp1.h"
+#include "vsp1_hsit.h"
 #include "vsp1_lif.h"
 #include "vsp1_rwpf.h"
 #include "vsp1_uds.h"
@@ -152,6 +153,22 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
        }
 
        /* Instantiate all the entities. */
+       vsp1->hsi = vsp1_hsit_create(vsp1, true);
+       if (IS_ERR(vsp1->hsi)) {
+               ret = PTR_ERR(vsp1->hsi);
+               goto done;
+       }
+
+       list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
+
+       vsp1->hst = vsp1_hsit_create(vsp1, false);
+       if (IS_ERR(vsp1->hst)) {
+               ret = PTR_ERR(vsp1->hst);
+               goto done;
+       }
+
+       list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
+
        if (vsp1->pdata->features & VSP1_HAS_LIF) {
                vsp1->lif = vsp1_lif_create(vsp1);
                if (IS_ERR(vsp1->lif)) {
index 9028f9d524f4b3e42e9e5d84243bb29df8023f9f..3798ef4a272b791c51cc120e5fbe12d5f8a0269a 100644 (file)
@@ -122,6 +122,8 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
                unsigned int id;
                unsigned int reg;
        } routes[] = {
+               { VI6_DPR_NODE_HSI, VI6_DPR_HSI_ROUTE },
+               { VI6_DPR_NODE_HST, VI6_DPR_HST_ROUTE },
                { 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) },
index c4feab2cbb8183b79146b08bb76fc60893f44f06..0d617467066b92987f4a9f024a661317e8b3d985 100644 (file)
@@ -20,6 +20,8 @@
 struct vsp1_device;
 
 enum vsp1_entity_type {
+       VSP1_ENTITY_HSI,
+       VSP1_ENTITY_HST,
        VSP1_ENTITY_LIF,
        VSP1_ENTITY_RPF,
        VSP1_ENTITY_UDS,
diff --git a/drivers/media/platform/vsp1/vsp1_hsit.c b/drivers/media/platform/vsp1/vsp1_hsit.c
new file mode 100644 (file)
index 0000000..2854853
--- /dev/null
@@ -0,0 +1,222 @@
+/*
+ * vsp1_hsit.c  --  R-Car VSP1 Hue Saturation value (Inverse) Transform
+ *
+ * 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_hsit.h"
+
+#define HSIT_MIN_SIZE                          4U
+#define HSIT_MAX_SIZE                          8190U
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_hsit_read(struct vsp1_hsit *hsit, u32 reg)
+{
+       return vsp1_read(hsit->entity.vsp1, reg);
+}
+
+static inline void vsp1_hsit_write(struct vsp1_hsit *hsit, u32 reg, u32 data)
+{
+       vsp1_write(hsit->entity.vsp1, reg, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int hsit_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+       struct vsp1_hsit *hsit = to_hsit(subdev);
+
+       if (!enable)
+               return 0;
+
+       if (hsit->inverse)
+               vsp1_hsit_write(hsit, VI6_HSI_CTRL, VI6_HSI_CTRL_EN);
+       else
+               vsp1_hsit_write(hsit, VI6_HST_CTRL, VI6_HST_CTRL_EN);
+
+       return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+static int hsit_enum_mbus_code(struct v4l2_subdev *subdev,
+                              struct v4l2_subdev_fh *fh,
+                              struct v4l2_subdev_mbus_code_enum *code)
+{
+       struct vsp1_hsit *hsit = to_hsit(subdev);
+
+       if (code->index > 0)
+               return -EINVAL;
+
+       if ((code->pad == HSIT_PAD_SINK && !hsit->inverse) |
+           (code->pad == HSIT_PAD_SOURCE && hsit->inverse))
+               code->code = V4L2_MBUS_FMT_ARGB8888_1X32;
+       else
+               code->code = V4L2_MBUS_FMT_AHSV8888_1X32;
+
+       return 0;
+}
+
+static int hsit_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, fse->pad);
+
+       if (fse->index || fse->code != format->code)
+               return -EINVAL;
+
+       if (fse->pad == HSIT_PAD_SINK) {
+               fse->min_width = HSIT_MIN_SIZE;
+               fse->max_width = HSIT_MAX_SIZE;
+               fse->min_height = HSIT_MIN_SIZE;
+               fse->max_height = HSIT_MAX_SIZE;
+       } 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;
+}
+
+static int hsit_get_format(struct v4l2_subdev *subdev,
+                          struct v4l2_subdev_fh *fh,
+                          struct v4l2_subdev_format *fmt)
+{
+       struct vsp1_hsit *hsit = to_hsit(subdev);
+
+       fmt->format = *vsp1_entity_get_pad_format(&hsit->entity, fh, fmt->pad,
+                                                 fmt->which);
+
+       return 0;
+}
+
+static int hsit_set_format(struct v4l2_subdev *subdev,
+                          struct v4l2_subdev_fh *fh,
+                          struct v4l2_subdev_format *fmt)
+{
+       struct vsp1_hsit *hsit = to_hsit(subdev);
+       struct v4l2_mbus_framefmt *format;
+
+       format = vsp1_entity_get_pad_format(&hsit->entity, fh, fmt->pad,
+                                           fmt->which);
+
+       if (fmt->pad == HSIT_PAD_SOURCE) {
+               /* The HST and HSI output format code and resolution can't be
+                * modified.
+                */
+               fmt->format = *format;
+               return 0;
+       }
+
+       format->code = hsit->inverse ? V4L2_MBUS_FMT_AHSV8888_1X32
+                    : V4L2_MBUS_FMT_ARGB8888_1X32;
+       format->width = clamp_t(unsigned int, fmt->format.width,
+                               HSIT_MIN_SIZE, HSIT_MAX_SIZE);
+       format->height = clamp_t(unsigned int, fmt->format.height,
+                                HSIT_MIN_SIZE, HSIT_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(&hsit->entity, fh, HSIT_PAD_SOURCE,
+                                           fmt->which);
+       *format = fmt->format;
+       format->code = hsit->inverse ? V4L2_MBUS_FMT_ARGB8888_1X32
+                    : V4L2_MBUS_FMT_AHSV8888_1X32;
+
+       return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops hsit_video_ops = {
+       .s_stream = hsit_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops hsit_pad_ops = {
+       .enum_mbus_code = hsit_enum_mbus_code,
+       .enum_frame_size = hsit_enum_frame_size,
+       .get_fmt = hsit_get_format,
+       .set_fmt = hsit_set_format,
+};
+
+static struct v4l2_subdev_ops hsit_ops = {
+       .video  = &hsit_video_ops,
+       .pad    = &hsit_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_hsit *vsp1_hsit_create(struct vsp1_device *vsp1, bool inverse)
+{
+       struct v4l2_subdev *subdev;
+       struct vsp1_hsit *hsit;
+       int ret;
+
+       hsit = devm_kzalloc(vsp1->dev, sizeof(*hsit), GFP_KERNEL);
+       if (hsit == NULL)
+               return ERR_PTR(-ENOMEM);
+
+       hsit->inverse = inverse;
+
+       if (inverse) {
+               hsit->entity.type = VSP1_ENTITY_HSI;
+               hsit->entity.id = VI6_DPR_NODE_HSI;
+       } else {
+               hsit->entity.type = VSP1_ENTITY_HST;
+               hsit->entity.id = VI6_DPR_NODE_HST;
+       }
+
+       ret = vsp1_entity_init(vsp1, &hsit->entity, 2);
+       if (ret < 0)
+               return ERR_PTR(ret);
+
+       /* Initialize the V4L2 subdev. */
+       subdev = &hsit->entity.subdev;
+       v4l2_subdev_init(subdev, &hsit_ops);
+
+       subdev->entity.ops = &vsp1_media_ops;
+       subdev->internal_ops = &vsp1_subdev_internal_ops;
+       snprintf(subdev->name, sizeof(subdev->name), "%s %s",
+                dev_name(vsp1->dev), inverse ? "hsi" : "hst");
+       v4l2_set_subdevdata(subdev, hsit);
+       subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+       vsp1_entity_init_formats(subdev, NULL);
+
+       return hsit;
+}
diff --git a/drivers/media/platform/vsp1/vsp1_hsit.h b/drivers/media/platform/vsp1/vsp1_hsit.h
new file mode 100644 (file)
index 0000000..82f1c84
--- /dev/null
@@ -0,0 +1,38 @@
+/*
+ * vsp1_hsit.h  --  R-Car VSP1 Hue Saturation value (Inverse) Transform
+ *
+ * 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_HSIT_H__
+#define __VSP1_HSIT_H__
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_entity.h"
+
+struct vsp1_device;
+
+#define HSIT_PAD_SINK                          0
+#define HSIT_PAD_SOURCE                                1
+
+struct vsp1_hsit {
+       struct vsp1_entity entity;
+       bool inverse;
+};
+
+static inline struct vsp1_hsit *to_hsit(struct v4l2_subdev *subdev)
+{
+       return container_of(subdev, struct vsp1_hsit, entity.subdev);
+}
+
+struct vsp1_hsit *vsp1_hsit_create(struct vsp1_device *vsp1, bool inverse);
+
+#endif /* __VSP1_HSIT_H__ */
index 1d3304f1365b3fcbfd9fcfc86ed4171ebd09f41d..0b93f882791676deb360f459a2e9c91691eb2b5a 100644 (file)
  */
 
 #define VI6_HST_CTRL                   0x2a00
+#define VI6_HST_CTRL_EN                        (1 << 0)
 
 /* -----------------------------------------------------------------------------
  * HSI Control Registers
  */
 
 #define VI6_HSI_CTRL                   0x2b00
+#define VI6_HSI_CTRL_EN                        (1 << 0)
 
 /* -----------------------------------------------------------------------------
  * BRU Control Registers