Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 1 | /* |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 2 | * Copyright (c) 2012-2013, NVIDIA Corporation. |
| 3 | * |
Thierry Reding | d105a6c | 2014-02-11 15:53:33 +0100 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 7 | */ |
| 8 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 9 | #include <linux/clk.h> |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 10 | #include <linux/iommu.h> |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 11 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 12 | #include "drm.h" |
| 13 | #include "gem.h" |
Thierry Reding | 497c56a | 2013-10-07 09:55:57 +0200 | [diff] [blame] | 14 | #include "gr2d.h" |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 15 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 16 | struct gr2d { |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 17 | struct iommu_group *group; |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 18 | struct tegra_drm_client client; |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 19 | struct host1x_channel *channel; |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 20 | struct clk *clk; |
| 21 | |
| 22 | DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 23 | }; |
| 24 | |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 25 | static inline struct gr2d *to_gr2d(struct tegra_drm_client *client) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 26 | { |
| 27 | return container_of(client, struct gr2d, client); |
| 28 | } |
| 29 | |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 30 | static int gr2d_init(struct host1x_client *client) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 31 | { |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 32 | struct tegra_drm_client *drm = host1x_to_drm_client(client); |
Thierry Reding | 9910f5c | 2014-05-22 09:57:15 +0200 | [diff] [blame] | 33 | struct drm_device *dev = dev_get_drvdata(client->parent); |
Arto Merilainen | 61644dc | 2013-10-14 15:21:55 +0300 | [diff] [blame] | 34 | unsigned long flags = HOST1X_SYNCPT_HAS_BASE; |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 35 | struct tegra_drm *tegra = dev->dev_private; |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 36 | struct gr2d *gr2d = to_gr2d(drm); |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 37 | int err; |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 38 | |
| 39 | gr2d->channel = host1x_channel_request(client->dev); |
| 40 | if (!gr2d->channel) |
| 41 | return -ENOMEM; |
| 42 | |
Thierry Reding | 617dd7c | 2017-08-30 12:48:31 +0200 | [diff] [blame] | 43 | client->syncpts[0] = host1x_syncpt_request(client, flags); |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 44 | if (!client->syncpts[0]) { |
Thierry Reding | dd99b4b | 2018-05-04 14:58:26 +0200 | [diff] [blame^] | 45 | err = -ENOMEM; |
| 46 | dev_err(client->dev, "failed to request syncpoint: %d\n", err); |
| 47 | goto put; |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 48 | } |
| 49 | |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 50 | if (tegra->domain) { |
| 51 | gr2d->group = iommu_group_get(client->dev); |
| 52 | |
| 53 | if (gr2d->group) { |
| 54 | err = iommu_attach_group(tegra->domain, gr2d->group); |
| 55 | if (err < 0) { |
| 56 | dev_err(client->dev, |
| 57 | "failed to attach to domain: %d\n", |
| 58 | err); |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 59 | iommu_group_put(gr2d->group); |
Thierry Reding | dd99b4b | 2018-05-04 14:58:26 +0200 | [diff] [blame^] | 60 | goto free; |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 61 | } |
| 62 | } |
| 63 | } |
| 64 | |
Thierry Reding | dd99b4b | 2018-05-04 14:58:26 +0200 | [diff] [blame^] | 65 | err = tegra_drm_register_client(tegra, drm); |
| 66 | if (err < 0) { |
| 67 | dev_err(client->dev, "failed to register client: %d\n", err); |
| 68 | goto detach; |
| 69 | } |
| 70 | |
| 71 | return 0; |
| 72 | |
| 73 | detach: |
| 74 | if (gr2d->group) { |
| 75 | iommu_detach_group(tegra->domain, gr2d->group); |
| 76 | iommu_group_put(gr2d->group); |
| 77 | } |
| 78 | free: |
| 79 | host1x_syncpt_free(client->syncpts[0]); |
| 80 | put: |
| 81 | host1x_channel_put(gr2d->channel); |
| 82 | return err; |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 83 | } |
| 84 | |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 85 | static int gr2d_exit(struct host1x_client *client) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 86 | { |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 87 | struct tegra_drm_client *drm = host1x_to_drm_client(client); |
Thierry Reding | 9910f5c | 2014-05-22 09:57:15 +0200 | [diff] [blame] | 88 | struct drm_device *dev = dev_get_drvdata(client->parent); |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 89 | struct tegra_drm *tegra = dev->dev_private; |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 90 | struct gr2d *gr2d = to_gr2d(drm); |
| 91 | int err; |
| 92 | |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 93 | err = tegra_drm_unregister_client(tegra, drm); |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 94 | if (err < 0) |
| 95 | return err; |
| 96 | |
| 97 | host1x_syncpt_free(client->syncpts[0]); |
Mikko Perttunen | 8474b02 | 2017-06-15 02:18:42 +0300 | [diff] [blame] | 98 | host1x_channel_put(gr2d->channel); |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 99 | |
Dmitry Osipenko | 5fda01b | 2018-05-04 02:47:20 +0300 | [diff] [blame] | 100 | if (gr2d->group) { |
| 101 | iommu_detach_group(tegra->domain, gr2d->group); |
| 102 | iommu_group_put(gr2d->group); |
| 103 | } |
| 104 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 105 | return 0; |
| 106 | } |
| 107 | |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 108 | static const struct host1x_client_ops gr2d_client_ops = { |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 109 | .init = gr2d_init, |
| 110 | .exit = gr2d_exit, |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | static int gr2d_open_channel(struct tegra_drm_client *client, |
Thierry Reding | c88c363 | 2013-09-26 16:08:22 +0200 | [diff] [blame] | 114 | struct tegra_drm_context *context) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 115 | { |
| 116 | struct gr2d *gr2d = to_gr2d(client); |
| 117 | |
| 118 | context->channel = host1x_channel_get(gr2d->channel); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 119 | if (!context->channel) |
| 120 | return -ENOMEM; |
| 121 | |
| 122 | return 0; |
| 123 | } |
| 124 | |
Thierry Reding | c88c363 | 2013-09-26 16:08:22 +0200 | [diff] [blame] | 125 | static void gr2d_close_channel(struct tegra_drm_context *context) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 126 | { |
| 127 | host1x_channel_put(context->channel); |
| 128 | } |
| 129 | |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 130 | static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset) |
| 131 | { |
| 132 | struct gr2d *gr2d = dev_get_drvdata(dev); |
| 133 | |
| 134 | switch (class) { |
| 135 | case HOST1X_CLASS_HOST1X: |
| 136 | if (offset == 0x2b) |
| 137 | return 1; |
| 138 | |
| 139 | break; |
| 140 | |
| 141 | case HOST1X_CLASS_GR2D: |
| 142 | case HOST1X_CLASS_GR2D_SB: |
| 143 | if (offset >= GR2D_NUM_REGS) |
| 144 | break; |
| 145 | |
| 146 | if (test_bit(offset, gr2d->addr_regs)) |
| 147 | return 1; |
| 148 | |
| 149 | break; |
| 150 | } |
| 151 | |
| 152 | return 0; |
| 153 | } |
| 154 | |
Dmitry Osipenko | 0f563a4 | 2017-06-15 02:18:37 +0300 | [diff] [blame] | 155 | static int gr2d_is_valid_class(u32 class) |
| 156 | { |
| 157 | return (class == HOST1X_CLASS_GR2D || |
| 158 | class == HOST1X_CLASS_GR2D_SB); |
| 159 | } |
| 160 | |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 161 | static const struct tegra_drm_client_ops gr2d_ops = { |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 162 | .open_channel = gr2d_open_channel, |
| 163 | .close_channel = gr2d_close_channel, |
Thierry Reding | c40f0f1 | 2013-10-10 11:00:33 +0200 | [diff] [blame] | 164 | .is_addr_reg = gr2d_is_addr_reg, |
Dmitry Osipenko | 0f563a4 | 2017-06-15 02:18:37 +0300 | [diff] [blame] | 165 | .is_valid_class = gr2d_is_valid_class, |
Thierry Reding | c40f0f1 | 2013-10-10 11:00:33 +0200 | [diff] [blame] | 166 | .submit = tegra_drm_submit, |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 167 | }; |
| 168 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 169 | static const struct of_device_id gr2d_match[] = { |
| 170 | { .compatible = "nvidia,tegra30-gr2d" }, |
| 171 | { .compatible = "nvidia,tegra20-gr2d" }, |
| 172 | { }, |
| 173 | }; |
Stephen Warren | ef70728 | 2014-06-18 16:21:55 -0600 | [diff] [blame] | 174 | MODULE_DEVICE_TABLE(of, gr2d_match); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 175 | |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 176 | static const u32 gr2d_addr_regs[] = { |
Thierry Reding | 497c56a | 2013-10-07 09:55:57 +0200 | [diff] [blame] | 177 | GR2D_UA_BASE_ADDR, |
| 178 | GR2D_VA_BASE_ADDR, |
| 179 | GR2D_PAT_BASE_ADDR, |
| 180 | GR2D_DSTA_BASE_ADDR, |
| 181 | GR2D_DSTB_BASE_ADDR, |
| 182 | GR2D_DSTC_BASE_ADDR, |
| 183 | GR2D_SRCA_BASE_ADDR, |
| 184 | GR2D_SRCB_BASE_ADDR, |
| 185 | GR2D_SRC_BASE_ADDR_SB, |
| 186 | GR2D_DSTA_BASE_ADDR_SB, |
| 187 | GR2D_DSTB_BASE_ADDR_SB, |
| 188 | GR2D_UA_BASE_ADDR_SB, |
| 189 | GR2D_VA_BASE_ADDR_SB, |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 190 | }; |
| 191 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 192 | static int gr2d_probe(struct platform_device *pdev) |
| 193 | { |
| 194 | struct device *dev = &pdev->dev; |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 195 | struct host1x_syncpt **syncpts; |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 196 | struct gr2d *gr2d; |
| 197 | unsigned int i; |
| 198 | int err; |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 199 | |
| 200 | gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL); |
| 201 | if (!gr2d) |
| 202 | return -ENOMEM; |
| 203 | |
| 204 | syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL); |
| 205 | if (!syncpts) |
| 206 | return -ENOMEM; |
| 207 | |
| 208 | gr2d->clk = devm_clk_get(dev, NULL); |
| 209 | if (IS_ERR(gr2d->clk)) { |
| 210 | dev_err(dev, "cannot get clock\n"); |
| 211 | return PTR_ERR(gr2d->clk); |
| 212 | } |
| 213 | |
| 214 | err = clk_prepare_enable(gr2d->clk); |
| 215 | if (err) { |
| 216 | dev_err(dev, "cannot turn on clock\n"); |
| 217 | return err; |
| 218 | } |
| 219 | |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 220 | INIT_LIST_HEAD(&gr2d->client.base.list); |
| 221 | gr2d->client.base.ops = &gr2d_client_ops; |
| 222 | gr2d->client.base.dev = dev; |
| 223 | gr2d->client.base.class = HOST1X_CLASS_GR2D; |
| 224 | gr2d->client.base.syncpts = syncpts; |
| 225 | gr2d->client.base.num_syncpts = 1; |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 226 | |
| 227 | INIT_LIST_HEAD(&gr2d->client.list); |
Thierry Reding | 53fa7f7 | 2013-09-24 15:35:40 +0200 | [diff] [blame] | 228 | gr2d->client.ops = &gr2d_ops; |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 229 | |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 230 | err = host1x_client_register(&gr2d->client.base); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 231 | if (err < 0) { |
| 232 | dev_err(dev, "failed to register host1x client: %d\n", err); |
Wei Yongjun | b008403 | 2013-10-21 13:38:34 +0800 | [diff] [blame] | 233 | clk_disable_unprepare(gr2d->clk); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 234 | return err; |
| 235 | } |
| 236 | |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 237 | /* initialize address register map */ |
| 238 | for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++) |
| 239 | set_bit(gr2d_addr_regs[i], gr2d->addr_regs); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 240 | |
| 241 | platform_set_drvdata(pdev, gr2d); |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 246 | static int gr2d_remove(struct platform_device *pdev) |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 247 | { |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 248 | struct gr2d *gr2d = platform_get_drvdata(pdev); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 249 | int err; |
| 250 | |
Thierry Reding | 776dc38 | 2013-10-14 14:43:22 +0200 | [diff] [blame] | 251 | err = host1x_client_unregister(&gr2d->client.base); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 252 | if (err < 0) { |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 253 | dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", |
| 254 | err); |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 255 | return err; |
| 256 | } |
| 257 | |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 258 | clk_disable_unprepare(gr2d->clk); |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | struct platform_driver tegra_gr2d_driver = { |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 264 | .driver = { |
Thierry Reding | a137ce3 | 2013-10-14 14:44:54 +0200 | [diff] [blame] | 265 | .name = "tegra-gr2d", |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 266 | .of_match_table = gr2d_match, |
Thierry Reding | c1bef81 | 2013-09-26 16:09:43 +0200 | [diff] [blame] | 267 | }, |
| 268 | .probe = gr2d_probe, |
| 269 | .remove = gr2d_remove, |
Terje Bergstrom | d43f81c | 2013-03-22 16:34:09 +0200 | [diff] [blame] | 270 | }; |