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1/*
2 * Copyright (c) 2012-2013, NVIDIA Corporation.
3 *
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.
7 */
8
9#include <linux/clk.h>
10
11#include "drm.h"
12#include "gem.h"
13#include "gr2d.h"
14
15struct gr2d {
16 struct tegra_drm_client client;
17 struct host1x_channel *channel;
18 struct clk *clk;
19
20 DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS);
21};
22
23static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)
24{
25 return container_of(client, struct gr2d, client);
26}
27
28static int gr2d_init(struct host1x_client *client)
29{
30 struct tegra_drm_client *drm = host1x_to_drm_client(client);
31 struct drm_device *dev = dev_get_drvdata(client->parent);
32 unsigned long flags = HOST1X_SYNCPT_HAS_BASE;
33 struct gr2d *gr2d = to_gr2d(drm);
34
35 gr2d->channel = host1x_channel_request(client->dev);
36 if (!gr2d->channel)
37 return -ENOMEM;
38
39 client->syncpts[0] = host1x_syncpt_request(client->dev, flags);
40 if (!client->syncpts[0]) {
41 host1x_channel_free(gr2d->channel);
42 return -ENOMEM;
43 }
44
45 return tegra_drm_register_client(dev->dev_private, drm);
46}
47
48static int gr2d_exit(struct host1x_client *client)
49{
50 struct tegra_drm_client *drm = host1x_to_drm_client(client);
51 struct drm_device *dev = dev_get_drvdata(client->parent);
52 struct gr2d *gr2d = to_gr2d(drm);
53 int err;
54
55 err = tegra_drm_unregister_client(dev->dev_private, drm);
56 if (err < 0)
57 return err;
58
59 host1x_syncpt_free(client->syncpts[0]);
60 host1x_channel_free(gr2d->channel);
61
62 return 0;
63}
64
65static const struct host1x_client_ops gr2d_client_ops = {
66 .init = gr2d_init,
67 .exit = gr2d_exit,
68};
69
70static int gr2d_open_channel(struct tegra_drm_client *client,
71 struct tegra_drm_context *context)
72{
73 struct gr2d *gr2d = to_gr2d(client);
74
75 context->channel = host1x_channel_get(gr2d->channel);
76 if (!context->channel)
77 return -ENOMEM;
78
79 return 0;
80}
81
82static void gr2d_close_channel(struct tegra_drm_context *context)
83{
84 host1x_channel_put(context->channel);
85}
86
87static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
88{
89 struct gr2d *gr2d = dev_get_drvdata(dev);
90
91 switch (class) {
92 case HOST1X_CLASS_HOST1X:
93 if (offset == 0x2b)
94 return 1;
95
96 break;
97
98 case HOST1X_CLASS_GR2D:
99 case HOST1X_CLASS_GR2D_SB:
100 if (offset >= GR2D_NUM_REGS)
101 break;
102
103 if (test_bit(offset, gr2d->addr_regs))
104 return 1;
105
106 break;
107 }
108
109 return 0;
110}
111
112static const struct tegra_drm_client_ops gr2d_ops = {
113 .open_channel = gr2d_open_channel,
114 .close_channel = gr2d_close_channel,
115 .is_addr_reg = gr2d_is_addr_reg,
116 .submit = tegra_drm_submit,
117};
118
119static const struct of_device_id gr2d_match[] = {
120 { .compatible = "nvidia,tegra30-gr2d" },
121 { .compatible = "nvidia,tegra20-gr2d" },
122 { },
123};
124MODULE_DEVICE_TABLE(of, gr2d_match);
125
126static const u32 gr2d_addr_regs[] = {
127 GR2D_UA_BASE_ADDR,
128 GR2D_VA_BASE_ADDR,
129 GR2D_PAT_BASE_ADDR,
130 GR2D_DSTA_BASE_ADDR,
131 GR2D_DSTB_BASE_ADDR,
132 GR2D_DSTC_BASE_ADDR,
133 GR2D_SRCA_BASE_ADDR,
134 GR2D_SRCB_BASE_ADDR,
135 GR2D_SRC_BASE_ADDR_SB,
136 GR2D_DSTA_BASE_ADDR_SB,
137 GR2D_DSTB_BASE_ADDR_SB,
138 GR2D_UA_BASE_ADDR_SB,
139 GR2D_VA_BASE_ADDR_SB,
140};
141
142static int gr2d_probe(struct platform_device *pdev)
143{
144 struct device *dev = &pdev->dev;
145 struct host1x_syncpt **syncpts;
146 struct gr2d *gr2d;
147 unsigned int i;
148 int err;
149
150 gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);
151 if (!gr2d)
152 return -ENOMEM;
153
154 syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
155 if (!syncpts)
156 return -ENOMEM;
157
158 gr2d->clk = devm_clk_get(dev, NULL);
159 if (IS_ERR(gr2d->clk)) {
160 dev_err(dev, "cannot get clock\n");
161 return PTR_ERR(gr2d->clk);
162 }
163
164 err = clk_prepare_enable(gr2d->clk);
165 if (err) {
166 dev_err(dev, "cannot turn on clock\n");
167 return err;
168 }
169
170 INIT_LIST_HEAD(&gr2d->client.base.list);
171 gr2d->client.base.ops = &gr2d_client_ops;
172 gr2d->client.base.dev = dev;
173 gr2d->client.base.class = HOST1X_CLASS_GR2D;
174 gr2d->client.base.syncpts = syncpts;
175 gr2d->client.base.num_syncpts = 1;
176
177 INIT_LIST_HEAD(&gr2d->client.list);
178 gr2d->client.ops = &gr2d_ops;
179
180 err = host1x_client_register(&gr2d->client.base);
181 if (err < 0) {
182 dev_err(dev, "failed to register host1x client: %d\n", err);
183 clk_disable_unprepare(gr2d->clk);
184 return err;
185 }
186
187 /* initialize address register map */
188 for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++)
189 set_bit(gr2d_addr_regs[i], gr2d->addr_regs);
190
191 platform_set_drvdata(pdev, gr2d);
192
193 return 0;
194}
195
196static int gr2d_remove(struct platform_device *pdev)
197{
198 struct gr2d *gr2d = platform_get_drvdata(pdev);
199 int err;
200
201 err = host1x_client_unregister(&gr2d->client.base);
202 if (err < 0) {
203 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
204 err);
205 return err;
206 }
207
208 clk_disable_unprepare(gr2d->clk);
209
210 return 0;
211}
212
213struct platform_driver tegra_gr2d_driver = {
214 .driver = {
215 .name = "tegra-gr2d",
216 .of_match_table = gr2d_match,
217 },
218 .probe = gr2d_probe,
219 .remove = gr2d_remove,
220};
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2012-2013, NVIDIA Corporation.
4 */
5
6#include <linux/clk.h>
7#include <linux/iommu.h>
8#include <linux/module.h>
9#include <linux/of_device.h>
10
11#include "drm.h"
12#include "gem.h"
13#include "gr2d.h"
14
15struct gr2d_soc {
16 unsigned int version;
17};
18
19struct gr2d {
20 struct iommu_group *group;
21 struct tegra_drm_client client;
22 struct host1x_channel *channel;
23 struct clk *clk;
24
25 const struct gr2d_soc *soc;
26
27 DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS);
28};
29
30static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)
31{
32 return container_of(client, struct gr2d, client);
33}
34
35static int gr2d_init(struct host1x_client *client)
36{
37 struct tegra_drm_client *drm = host1x_to_drm_client(client);
38 struct drm_device *dev = dev_get_drvdata(client->parent);
39 unsigned long flags = HOST1X_SYNCPT_HAS_BASE;
40 struct gr2d *gr2d = to_gr2d(drm);
41 int err;
42
43 gr2d->channel = host1x_channel_request(client->dev);
44 if (!gr2d->channel)
45 return -ENOMEM;
46
47 client->syncpts[0] = host1x_syncpt_request(client, flags);
48 if (!client->syncpts[0]) {
49 err = -ENOMEM;
50 dev_err(client->dev, "failed to request syncpoint: %d\n", err);
51 goto put;
52 }
53
54 gr2d->group = host1x_client_iommu_attach(client, false);
55 if (IS_ERR(gr2d->group)) {
56 err = PTR_ERR(gr2d->group);
57 dev_err(client->dev, "failed to attach to domain: %d\n", err);
58 goto free;
59 }
60
61 err = tegra_drm_register_client(dev->dev_private, drm);
62 if (err < 0) {
63 dev_err(client->dev, "failed to register client: %d\n", err);
64 goto detach;
65 }
66
67 return 0;
68
69detach:
70 host1x_client_iommu_detach(client, gr2d->group);
71free:
72 host1x_syncpt_free(client->syncpts[0]);
73put:
74 host1x_channel_put(gr2d->channel);
75 return err;
76}
77
78static int gr2d_exit(struct host1x_client *client)
79{
80 struct tegra_drm_client *drm = host1x_to_drm_client(client);
81 struct drm_device *dev = dev_get_drvdata(client->parent);
82 struct tegra_drm *tegra = dev->dev_private;
83 struct gr2d *gr2d = to_gr2d(drm);
84 int err;
85
86 err = tegra_drm_unregister_client(tegra, drm);
87 if (err < 0)
88 return err;
89
90 host1x_client_iommu_detach(client, gr2d->group);
91 host1x_syncpt_free(client->syncpts[0]);
92 host1x_channel_put(gr2d->channel);
93
94 return 0;
95}
96
97static const struct host1x_client_ops gr2d_client_ops = {
98 .init = gr2d_init,
99 .exit = gr2d_exit,
100};
101
102static int gr2d_open_channel(struct tegra_drm_client *client,
103 struct tegra_drm_context *context)
104{
105 struct gr2d *gr2d = to_gr2d(client);
106
107 context->channel = host1x_channel_get(gr2d->channel);
108 if (!context->channel)
109 return -ENOMEM;
110
111 return 0;
112}
113
114static void gr2d_close_channel(struct tegra_drm_context *context)
115{
116 host1x_channel_put(context->channel);
117}
118
119static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
120{
121 struct gr2d *gr2d = dev_get_drvdata(dev);
122
123 switch (class) {
124 case HOST1X_CLASS_HOST1X:
125 if (offset == 0x2b)
126 return 1;
127
128 break;
129
130 case HOST1X_CLASS_GR2D:
131 case HOST1X_CLASS_GR2D_SB:
132 if (offset >= GR2D_NUM_REGS)
133 break;
134
135 if (test_bit(offset, gr2d->addr_regs))
136 return 1;
137
138 break;
139 }
140
141 return 0;
142}
143
144static int gr2d_is_valid_class(u32 class)
145{
146 return (class == HOST1X_CLASS_GR2D ||
147 class == HOST1X_CLASS_GR2D_SB);
148}
149
150static const struct tegra_drm_client_ops gr2d_ops = {
151 .open_channel = gr2d_open_channel,
152 .close_channel = gr2d_close_channel,
153 .is_addr_reg = gr2d_is_addr_reg,
154 .is_valid_class = gr2d_is_valid_class,
155 .submit = tegra_drm_submit,
156};
157
158static const struct gr2d_soc tegra20_gr2d_soc = {
159 .version = 0x20,
160};
161
162static const struct gr2d_soc tegra30_gr2d_soc = {
163 .version = 0x30,
164};
165
166static const struct of_device_id gr2d_match[] = {
167 { .compatible = "nvidia,tegra30-gr2d", .data = &tegra20_gr2d_soc },
168 { .compatible = "nvidia,tegra20-gr2d", .data = &tegra30_gr2d_soc },
169 { },
170};
171MODULE_DEVICE_TABLE(of, gr2d_match);
172
173static const u32 gr2d_addr_regs[] = {
174 GR2D_UA_BASE_ADDR,
175 GR2D_VA_BASE_ADDR,
176 GR2D_PAT_BASE_ADDR,
177 GR2D_DSTA_BASE_ADDR,
178 GR2D_DSTB_BASE_ADDR,
179 GR2D_DSTC_BASE_ADDR,
180 GR2D_SRCA_BASE_ADDR,
181 GR2D_SRCB_BASE_ADDR,
182 GR2D_SRC_BASE_ADDR_SB,
183 GR2D_DSTA_BASE_ADDR_SB,
184 GR2D_DSTB_BASE_ADDR_SB,
185 GR2D_UA_BASE_ADDR_SB,
186 GR2D_VA_BASE_ADDR_SB,
187};
188
189static int gr2d_probe(struct platform_device *pdev)
190{
191 struct device *dev = &pdev->dev;
192 struct host1x_syncpt **syncpts;
193 struct gr2d *gr2d;
194 unsigned int i;
195 int err;
196
197 gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);
198 if (!gr2d)
199 return -ENOMEM;
200
201 gr2d->soc = of_device_get_match_data(dev);
202
203 syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
204 if (!syncpts)
205 return -ENOMEM;
206
207 gr2d->clk = devm_clk_get(dev, NULL);
208 if (IS_ERR(gr2d->clk)) {
209 dev_err(dev, "cannot get clock\n");
210 return PTR_ERR(gr2d->clk);
211 }
212
213 err = clk_prepare_enable(gr2d->clk);
214 if (err) {
215 dev_err(dev, "cannot turn on clock\n");
216 return err;
217 }
218
219 INIT_LIST_HEAD(&gr2d->client.base.list);
220 gr2d->client.base.ops = &gr2d_client_ops;
221 gr2d->client.base.dev = dev;
222 gr2d->client.base.class = HOST1X_CLASS_GR2D;
223 gr2d->client.base.syncpts = syncpts;
224 gr2d->client.base.num_syncpts = 1;
225
226 INIT_LIST_HEAD(&gr2d->client.list);
227 gr2d->client.version = gr2d->soc->version;
228 gr2d->client.ops = &gr2d_ops;
229
230 err = host1x_client_register(&gr2d->client.base);
231 if (err < 0) {
232 dev_err(dev, "failed to register host1x client: %d\n", err);
233 clk_disable_unprepare(gr2d->clk);
234 return err;
235 }
236
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);
240
241 platform_set_drvdata(pdev, gr2d);
242
243 return 0;
244}
245
246static int gr2d_remove(struct platform_device *pdev)
247{
248 struct gr2d *gr2d = platform_get_drvdata(pdev);
249 int err;
250
251 err = host1x_client_unregister(&gr2d->client.base);
252 if (err < 0) {
253 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
254 err);
255 return err;
256 }
257
258 clk_disable_unprepare(gr2d->clk);
259
260 return 0;
261}
262
263struct platform_driver tegra_gr2d_driver = {
264 .driver = {
265 .name = "tegra-gr2d",
266 .of_match_table = gr2d_match,
267 },
268 .probe = gr2d_probe,
269 .remove = gr2d_remove,
270};