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Terje Bergstromd43f81c2013-03-22 16:34:09 +02001/*
Terje Bergstromd43f81c2013-03-22 16:34:09 +02002 * Copyright (c) 2012-2013, NVIDIA Corporation.
3 *
Thierry Redingd105a6c2014-02-11 15:53:33 +01004 * 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 Bergstromd43f81c2013-03-22 16:34:09 +02007 */
8
Terje Bergstromd43f81c2013-03-22 16:34:09 +02009#include <linux/clk.h>
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030010#include <linux/iommu.h>
Thierry Reding840fd212018-05-16 17:06:36 +020011#include <linux/of_device.h>
Terje Bergstromd43f81c2013-03-22 16:34:09 +020012
Terje Bergstromd43f81c2013-03-22 16:34:09 +020013#include "drm.h"
14#include "gem.h"
Thierry Reding497c56a2013-10-07 09:55:57 +020015#include "gr2d.h"
Thierry Redingc1bef812013-09-26 16:09:43 +020016
Thierry Reding840fd212018-05-16 17:06:36 +020017struct gr2d_soc {
18 unsigned int version;
19};
20
Terje Bergstromd43f81c2013-03-22 16:34:09 +020021struct gr2d {
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030022 struct iommu_group *group;
Thierry Reding53fa7f72013-09-24 15:35:40 +020023 struct tegra_drm_client client;
Terje Bergstromd43f81c2013-03-22 16:34:09 +020024 struct host1x_channel *channel;
Thierry Redingc1bef812013-09-26 16:09:43 +020025 struct clk *clk;
26
Thierry Reding840fd212018-05-16 17:06:36 +020027 const struct gr2d_soc *soc;
28
Thierry Redingc1bef812013-09-26 16:09:43 +020029 DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS);
Terje Bergstromd43f81c2013-03-22 16:34:09 +020030};
31
Thierry Reding53fa7f72013-09-24 15:35:40 +020032static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)
Terje Bergstromd43f81c2013-03-22 16:34:09 +020033{
34 return container_of(client, struct gr2d, client);
35}
36
Thierry Reding776dc382013-10-14 14:43:22 +020037static int gr2d_init(struct host1x_client *client)
Terje Bergstromd43f81c2013-03-22 16:34:09 +020038{
Thierry Reding776dc382013-10-14 14:43:22 +020039 struct tegra_drm_client *drm = host1x_to_drm_client(client);
Thierry Reding9910f5c2014-05-22 09:57:15 +020040 struct drm_device *dev = dev_get_drvdata(client->parent);
Arto Merilainen61644dc2013-10-14 15:21:55 +030041 unsigned long flags = HOST1X_SYNCPT_HAS_BASE;
Thierry Reding776dc382013-10-14 14:43:22 +020042 struct gr2d *gr2d = to_gr2d(drm);
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030043 int err;
Thierry Reding776dc382013-10-14 14:43:22 +020044
45 gr2d->channel = host1x_channel_request(client->dev);
46 if (!gr2d->channel)
47 return -ENOMEM;
48
Thierry Reding617dd7c2017-08-30 12:48:31 +020049 client->syncpts[0] = host1x_syncpt_request(client, flags);
Thierry Reding776dc382013-10-14 14:43:22 +020050 if (!client->syncpts[0]) {
Thierry Redingdd99b4b2018-05-04 14:58:26 +020051 err = -ENOMEM;
52 dev_err(client->dev, "failed to request syncpoint: %d\n", err);
53 goto put;
Thierry Reding776dc382013-10-14 14:43:22 +020054 }
55
Thierry Reding0c407de2018-05-04 15:02:24 +020056 gr2d->group = host1x_client_iommu_attach(client, false);
57 if (IS_ERR(gr2d->group)) {
58 err = PTR_ERR(gr2d->group);
59 dev_err(client->dev, "failed to attach to domain: %d\n", err);
60 goto free;
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030061 }
62
Thierry Reding0c407de2018-05-04 15:02:24 +020063 err = tegra_drm_register_client(dev->dev_private, drm);
Thierry Redingdd99b4b2018-05-04 14:58:26 +020064 if (err < 0) {
65 dev_err(client->dev, "failed to register client: %d\n", err);
66 goto detach;
67 }
68
69 return 0;
70
71detach:
Thierry Reding0c407de2018-05-04 15:02:24 +020072 host1x_client_iommu_detach(client, gr2d->group);
Thierry Redingdd99b4b2018-05-04 14:58:26 +020073free:
74 host1x_syncpt_free(client->syncpts[0]);
75put:
76 host1x_channel_put(gr2d->channel);
77 return err;
Terje Bergstromd43f81c2013-03-22 16:34:09 +020078}
79
Thierry Reding776dc382013-10-14 14:43:22 +020080static int gr2d_exit(struct host1x_client *client)
Terje Bergstromd43f81c2013-03-22 16:34:09 +020081{
Thierry Reding776dc382013-10-14 14:43:22 +020082 struct tegra_drm_client *drm = host1x_to_drm_client(client);
Thierry Reding9910f5c2014-05-22 09:57:15 +020083 struct drm_device *dev = dev_get_drvdata(client->parent);
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030084 struct tegra_drm *tegra = dev->dev_private;
Thierry Reding776dc382013-10-14 14:43:22 +020085 struct gr2d *gr2d = to_gr2d(drm);
86 int err;
87
Dmitry Osipenko5fda01b2018-05-04 02:47:20 +030088 err = tegra_drm_unregister_client(tegra, drm);
Thierry Reding776dc382013-10-14 14:43:22 +020089 if (err < 0)
90 return err;
91
Thierry Reding0c407de2018-05-04 15:02:24 +020092 host1x_client_iommu_detach(client, gr2d->group);
Thierry Reding776dc382013-10-14 14:43:22 +020093 host1x_syncpt_free(client->syncpts[0]);
Mikko Perttunen8474b022017-06-15 02:18:42 +030094 host1x_channel_put(gr2d->channel);
Thierry Reding776dc382013-10-14 14:43:22 +020095
Terje Bergstromd43f81c2013-03-22 16:34:09 +020096 return 0;
97}
98
Thierry Reding53fa7f72013-09-24 15:35:40 +020099static const struct host1x_client_ops gr2d_client_ops = {
Thierry Reding776dc382013-10-14 14:43:22 +0200100 .init = gr2d_init,
101 .exit = gr2d_exit,
Thierry Reding53fa7f72013-09-24 15:35:40 +0200102};
103
104static int gr2d_open_channel(struct tegra_drm_client *client,
Thierry Redingc88c3632013-09-26 16:08:22 +0200105 struct tegra_drm_context *context)
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200106{
107 struct gr2d *gr2d = to_gr2d(client);
108
109 context->channel = host1x_channel_get(gr2d->channel);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200110 if (!context->channel)
111 return -ENOMEM;
112
113 return 0;
114}
115
Thierry Redingc88c3632013-09-26 16:08:22 +0200116static void gr2d_close_channel(struct tegra_drm_context *context)
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200117{
118 host1x_channel_put(context->channel);
119}
120
Thierry Redingc1bef812013-09-26 16:09:43 +0200121static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
122{
123 struct gr2d *gr2d = dev_get_drvdata(dev);
124
125 switch (class) {
126 case HOST1X_CLASS_HOST1X:
127 if (offset == 0x2b)
128 return 1;
129
130 break;
131
132 case HOST1X_CLASS_GR2D:
133 case HOST1X_CLASS_GR2D_SB:
134 if (offset >= GR2D_NUM_REGS)
135 break;
136
137 if (test_bit(offset, gr2d->addr_regs))
138 return 1;
139
140 break;
141 }
142
143 return 0;
144}
145
Dmitry Osipenko0f563a42017-06-15 02:18:37 +0300146static int gr2d_is_valid_class(u32 class)
147{
148 return (class == HOST1X_CLASS_GR2D ||
149 class == HOST1X_CLASS_GR2D_SB);
150}
151
Thierry Reding53fa7f72013-09-24 15:35:40 +0200152static const struct tegra_drm_client_ops gr2d_ops = {
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200153 .open_channel = gr2d_open_channel,
154 .close_channel = gr2d_close_channel,
Thierry Redingc40f0f12013-10-10 11:00:33 +0200155 .is_addr_reg = gr2d_is_addr_reg,
Dmitry Osipenko0f563a42017-06-15 02:18:37 +0300156 .is_valid_class = gr2d_is_valid_class,
Thierry Redingc40f0f12013-10-10 11:00:33 +0200157 .submit = tegra_drm_submit,
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200158};
159
Thierry Reding840fd212018-05-16 17:06:36 +0200160static const struct gr2d_soc tegra20_gr2d_soc = {
161 .version = 0x20,
162};
163
164static const struct gr2d_soc tegra30_gr2d_soc = {
165 .version = 0x30,
166};
167
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200168static const struct of_device_id gr2d_match[] = {
Thierry Reding840fd212018-05-16 17:06:36 +0200169 { .compatible = "nvidia,tegra30-gr2d", .data = &tegra20_gr2d_soc },
170 { .compatible = "nvidia,tegra20-gr2d", .data = &tegra30_gr2d_soc },
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200171 { },
172};
Stephen Warrenef707282014-06-18 16:21:55 -0600173MODULE_DEVICE_TABLE(of, gr2d_match);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200174
Thierry Redingc1bef812013-09-26 16:09:43 +0200175static const u32 gr2d_addr_regs[] = {
Thierry Reding497c56a2013-10-07 09:55:57 +0200176 GR2D_UA_BASE_ADDR,
177 GR2D_VA_BASE_ADDR,
178 GR2D_PAT_BASE_ADDR,
179 GR2D_DSTA_BASE_ADDR,
180 GR2D_DSTB_BASE_ADDR,
181 GR2D_DSTC_BASE_ADDR,
182 GR2D_SRCA_BASE_ADDR,
183 GR2D_SRCB_BASE_ADDR,
184 GR2D_SRC_BASE_ADDR_SB,
185 GR2D_DSTA_BASE_ADDR_SB,
186 GR2D_DSTB_BASE_ADDR_SB,
187 GR2D_UA_BASE_ADDR_SB,
188 GR2D_VA_BASE_ADDR_SB,
Thierry Redingc1bef812013-09-26 16:09:43 +0200189};
190
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200191static int gr2d_probe(struct platform_device *pdev)
192{
193 struct device *dev = &pdev->dev;
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200194 struct host1x_syncpt **syncpts;
Thierry Redingc1bef812013-09-26 16:09:43 +0200195 struct gr2d *gr2d;
196 unsigned int i;
197 int err;
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200198
199 gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);
200 if (!gr2d)
201 return -ENOMEM;
202
Thierry Reding840fd212018-05-16 17:06:36 +0200203 gr2d->soc = of_device_get_match_data(dev);
204
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200205 syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
206 if (!syncpts)
207 return -ENOMEM;
208
209 gr2d->clk = devm_clk_get(dev, NULL);
210 if (IS_ERR(gr2d->clk)) {
211 dev_err(dev, "cannot get clock\n");
212 return PTR_ERR(gr2d->clk);
213 }
214
215 err = clk_prepare_enable(gr2d->clk);
216 if (err) {
217 dev_err(dev, "cannot turn on clock\n");
218 return err;
219 }
220
Thierry Reding53fa7f72013-09-24 15:35:40 +0200221 INIT_LIST_HEAD(&gr2d->client.base.list);
222 gr2d->client.base.ops = &gr2d_client_ops;
223 gr2d->client.base.dev = dev;
224 gr2d->client.base.class = HOST1X_CLASS_GR2D;
225 gr2d->client.base.syncpts = syncpts;
226 gr2d->client.base.num_syncpts = 1;
Thierry Reding776dc382013-10-14 14:43:22 +0200227
228 INIT_LIST_HEAD(&gr2d->client.list);
Thierry Reding840fd212018-05-16 17:06:36 +0200229 gr2d->client.version = gr2d->soc->version;
Thierry Reding53fa7f72013-09-24 15:35:40 +0200230 gr2d->client.ops = &gr2d_ops;
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200231
Thierry Reding776dc382013-10-14 14:43:22 +0200232 err = host1x_client_register(&gr2d->client.base);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200233 if (err < 0) {
234 dev_err(dev, "failed to register host1x client: %d\n", err);
Wei Yongjunb0084032013-10-21 13:38:34 +0800235 clk_disable_unprepare(gr2d->clk);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200236 return err;
237 }
238
Thierry Redingc1bef812013-09-26 16:09:43 +0200239 /* initialize address register map */
240 for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++)
241 set_bit(gr2d_addr_regs[i], gr2d->addr_regs);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200242
243 platform_set_drvdata(pdev, gr2d);
244
245 return 0;
246}
247
Thierry Redingc1bef812013-09-26 16:09:43 +0200248static int gr2d_remove(struct platform_device *pdev)
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200249{
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200250 struct gr2d *gr2d = platform_get_drvdata(pdev);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200251 int err;
252
Thierry Reding776dc382013-10-14 14:43:22 +0200253 err = host1x_client_unregister(&gr2d->client.base);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200254 if (err < 0) {
Thierry Redingc1bef812013-09-26 16:09:43 +0200255 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
256 err);
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200257 return err;
258 }
259
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200260 clk_disable_unprepare(gr2d->clk);
261
262 return 0;
263}
264
265struct platform_driver tegra_gr2d_driver = {
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200266 .driver = {
Thierry Redinga137ce32013-10-14 14:44:54 +0200267 .name = "tegra-gr2d",
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200268 .of_match_table = gr2d_match,
Thierry Redingc1bef812013-09-26 16:09:43 +0200269 },
270 .probe = gr2d_probe,
271 .remove = gr2d_remove,
Terje Bergstromd43f81c2013-03-22 16:34:09 +0200272};