Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 1 | /* |
| 2 | * vsp1_entity.c -- R-Car VSP1 Base Entity |
| 3 | * |
Laurent Pinchart | 8a1edc5 | 2014-02-06 14:42:31 -0300 | [diff] [blame^] | 4 | * Copyright (C) 2013-2014 Renesas Electronics Corporation |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 5 | * |
| 6 | * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/device.h> |
| 15 | #include <linux/gfp.h> |
| 16 | |
| 17 | #include <media/media-entity.h> |
Laurent Pinchart | a626e64 | 2013-07-10 12:03:30 -0300 | [diff] [blame] | 18 | #include <media/v4l2-ctrls.h> |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 19 | #include <media/v4l2-subdev.h> |
| 20 | |
| 21 | #include "vsp1.h" |
| 22 | #include "vsp1_entity.h" |
| 23 | |
| 24 | /* ----------------------------------------------------------------------------- |
| 25 | * V4L2 Subdevice Operations |
| 26 | */ |
| 27 | |
| 28 | struct v4l2_mbus_framefmt * |
| 29 | vsp1_entity_get_pad_format(struct vsp1_entity *entity, |
| 30 | struct v4l2_subdev_fh *fh, |
| 31 | unsigned int pad, u32 which) |
| 32 | { |
| 33 | switch (which) { |
| 34 | case V4L2_SUBDEV_FORMAT_TRY: |
| 35 | return v4l2_subdev_get_try_format(fh, pad); |
| 36 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
| 37 | return &entity->formats[pad]; |
| 38 | default: |
| 39 | return NULL; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | * vsp1_entity_init_formats - Initialize formats on all pads |
| 45 | * @subdev: V4L2 subdevice |
| 46 | * @fh: V4L2 subdev file handle |
| 47 | * |
| 48 | * Initialize all pad formats with default values. If fh is not NULL, try |
| 49 | * formats are initialized on the file handle. Otherwise active formats are |
| 50 | * initialized on the device. |
| 51 | */ |
| 52 | void vsp1_entity_init_formats(struct v4l2_subdev *subdev, |
| 53 | struct v4l2_subdev_fh *fh) |
| 54 | { |
| 55 | struct v4l2_subdev_format format; |
| 56 | unsigned int pad; |
| 57 | |
| 58 | for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { |
| 59 | memset(&format, 0, sizeof(format)); |
| 60 | |
| 61 | format.pad = pad; |
| 62 | format.which = fh ? V4L2_SUBDEV_FORMAT_TRY |
| 63 | : V4L2_SUBDEV_FORMAT_ACTIVE; |
| 64 | |
| 65 | v4l2_subdev_call(subdev, pad, set_fmt, fh, &format); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | static int vsp1_entity_open(struct v4l2_subdev *subdev, |
| 70 | struct v4l2_subdev_fh *fh) |
| 71 | { |
| 72 | vsp1_entity_init_formats(subdev, fh); |
| 73 | |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = { |
| 78 | .open = vsp1_entity_open, |
| 79 | }; |
| 80 | |
| 81 | /* ----------------------------------------------------------------------------- |
| 82 | * Media Operations |
| 83 | */ |
| 84 | |
| 85 | static int vsp1_entity_link_setup(struct media_entity *entity, |
| 86 | const struct media_pad *local, |
| 87 | const struct media_pad *remote, u32 flags) |
| 88 | { |
| 89 | struct vsp1_entity *source; |
| 90 | |
| 91 | if (!(local->flags & MEDIA_PAD_FL_SOURCE)) |
| 92 | return 0; |
| 93 | |
| 94 | source = container_of(local->entity, struct vsp1_entity, subdev.entity); |
| 95 | |
| 96 | if (!source->route) |
| 97 | return 0; |
| 98 | |
| 99 | if (flags & MEDIA_LNK_FL_ENABLED) { |
| 100 | if (source->sink) |
| 101 | return -EBUSY; |
| 102 | source->sink = remote->entity; |
| 103 | } else { |
| 104 | source->sink = NULL; |
| 105 | } |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | const struct media_entity_operations vsp1_media_ops = { |
| 111 | .link_setup = vsp1_entity_link_setup, |
| 112 | .link_validate = v4l2_subdev_link_validate, |
| 113 | }; |
| 114 | |
| 115 | /* ----------------------------------------------------------------------------- |
| 116 | * Initialization |
| 117 | */ |
| 118 | |
| 119 | int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, |
| 120 | unsigned int num_pads) |
| 121 | { |
| 122 | static const struct { |
| 123 | unsigned int id; |
| 124 | unsigned int reg; |
| 125 | } routes[] = { |
Laurent Pinchart | 5cdf574 | 2013-07-10 17:30:14 -0300 | [diff] [blame] | 126 | { VI6_DPR_NODE_HSI, VI6_DPR_HSI_ROUTE }, |
| 127 | { VI6_DPR_NODE_HST, VI6_DPR_HST_ROUTE }, |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 128 | { VI6_DPR_NODE_LIF, 0 }, |
Laurent Pinchart | 989af88 | 2013-07-10 12:03:30 -0300 | [diff] [blame] | 129 | { VI6_DPR_NODE_LUT, VI6_DPR_LUT_ROUTE }, |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 130 | { VI6_DPR_NODE_RPF(0), VI6_DPR_RPF_ROUTE(0) }, |
| 131 | { VI6_DPR_NODE_RPF(1), VI6_DPR_RPF_ROUTE(1) }, |
| 132 | { VI6_DPR_NODE_RPF(2), VI6_DPR_RPF_ROUTE(2) }, |
| 133 | { VI6_DPR_NODE_RPF(3), VI6_DPR_RPF_ROUTE(3) }, |
| 134 | { VI6_DPR_NODE_RPF(4), VI6_DPR_RPF_ROUTE(4) }, |
Laurent Pinchart | a626e64 | 2013-07-10 12:03:30 -0300 | [diff] [blame] | 135 | { VI6_DPR_NODE_SRU, VI6_DPR_SRU_ROUTE }, |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 136 | { VI6_DPR_NODE_UDS(0), VI6_DPR_UDS_ROUTE(0) }, |
| 137 | { VI6_DPR_NODE_UDS(1), VI6_DPR_UDS_ROUTE(1) }, |
| 138 | { VI6_DPR_NODE_UDS(2), VI6_DPR_UDS_ROUTE(2) }, |
| 139 | { VI6_DPR_NODE_WPF(0), 0 }, |
| 140 | { VI6_DPR_NODE_WPF(1), 0 }, |
| 141 | { VI6_DPR_NODE_WPF(2), 0 }, |
| 142 | { VI6_DPR_NODE_WPF(3), 0 }, |
| 143 | }; |
| 144 | |
| 145 | unsigned int i; |
| 146 | |
| 147 | for (i = 0; i < ARRAY_SIZE(routes); ++i) { |
| 148 | if (routes[i].id == entity->id) { |
| 149 | entity->route = routes[i].reg; |
| 150 | break; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | if (i == ARRAY_SIZE(routes)) |
| 155 | return -EINVAL; |
| 156 | |
| 157 | entity->vsp1 = vsp1; |
| 158 | entity->source_pad = num_pads - 1; |
| 159 | |
| 160 | /* Allocate formats and pads. */ |
| 161 | entity->formats = devm_kzalloc(vsp1->dev, |
| 162 | num_pads * sizeof(*entity->formats), |
| 163 | GFP_KERNEL); |
| 164 | if (entity->formats == NULL) |
| 165 | return -ENOMEM; |
| 166 | |
| 167 | entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads), |
| 168 | GFP_KERNEL); |
| 169 | if (entity->pads == NULL) |
| 170 | return -ENOMEM; |
| 171 | |
| 172 | /* Initialize pads. */ |
| 173 | for (i = 0; i < num_pads - 1; ++i) |
| 174 | entity->pads[i].flags = MEDIA_PAD_FL_SINK; |
| 175 | |
| 176 | entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE; |
| 177 | |
| 178 | /* Initialize the media entity. */ |
| 179 | return media_entity_init(&entity->subdev.entity, num_pads, |
| 180 | entity->pads, 0); |
| 181 | } |
| 182 | |
| 183 | void vsp1_entity_destroy(struct vsp1_entity *entity) |
| 184 | { |
Laurent Pinchart | a626e64 | 2013-07-10 12:03:30 -0300 | [diff] [blame] | 185 | if (entity->subdev.ctrl_handler) |
| 186 | v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); |
Laurent Pinchart | 26e0ca2 | 2013-06-04 11:22:30 -0300 | [diff] [blame] | 187 | media_entity_cleanup(&entity->subdev.entity); |
| 188 | } |