1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2012-2013, NVIDIA Corporation.
18 #include "gr2d.h"
30 struct gr2d {  struct
43 static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)  in to_gr2d()  argument
45 	return container_of(client, struct gr2d, client);  in to_gr2d()
51 	struct drm_device *dev = dev_get_drvdata(client->host);  in gr2d_init()
53 	struct gr2d *gr2d = to_gr2d(drm);  in gr2d_init()  local
56 	gr2d->channel = host1x_channel_request(client);  in gr2d_init()
57 	if (!gr2d->channel)  in gr2d_init()
58 		return -ENOMEM;  in gr2d_init()
60 	client->syncpts[0] = host1x_syncpt_request(client, flags);  in gr2d_init()
61 	if (!client->syncpts[0]) {  in gr2d_init()
62 		err = -ENOMEM;  in gr2d_init()
63 		dev_err(client->dev, "failed to request syncpoint: %d\n", err);  in gr2d_init()
69 		dev_err(client->dev, "failed to attach to domain: %d\n", err);  in gr2d_init()
73 	pm_runtime_enable(client->dev);  in gr2d_init()
74 	pm_runtime_use_autosuspend(client->dev);  in gr2d_init()
75 	pm_runtime_set_autosuspend_delay(client->dev, 200);  in gr2d_init()
77 	err = tegra_drm_register_client(dev->dev_private, drm);  in gr2d_init()
79 		dev_err(client->dev, "failed to register client: %d\n", err);  in gr2d_init()
86 	pm_runtime_dont_use_autosuspend(client->dev);  in gr2d_init()
87 	pm_runtime_force_suspend(client->dev);  in gr2d_init()
91 	host1x_syncpt_put(client->syncpts[0]);  in gr2d_init()
93 	host1x_channel_put(gr2d->channel);  in gr2d_init()
100 	struct drm_device *dev = dev_get_drvdata(client->host);  in gr2d_exit()
101 	struct tegra_drm *tegra = dev->dev_private;  in gr2d_exit()
102 	struct gr2d *gr2d = to_gr2d(drm);  in gr2d_exit()  local
109 	pm_runtime_dont_use_autosuspend(client->dev);  in gr2d_exit()
110 	pm_runtime_force_suspend(client->dev);  in gr2d_exit()
113 	host1x_syncpt_put(client->syncpts[0]);  in gr2d_exit()
114 	host1x_channel_put(gr2d->channel);  in gr2d_exit()
116 	gr2d->channel = NULL;  in gr2d_exit()
129 	struct gr2d *gr2d = to_gr2d(client);  in gr2d_open_channel()  local
131 	context->channel = host1x_channel_get(gr2d->channel);  in gr2d_open_channel()
132 	if (!context->channel)  in gr2d_open_channel()
133 		return -ENOMEM;  in gr2d_open_channel()
140 	host1x_channel_put(context->channel);  in gr2d_close_channel()
145 	struct gr2d *gr2d = dev_get_drvdata(dev);  in gr2d_is_addr_reg()  local
159 		if (test_bit(offset, gr2d->addr_regs))  in gr2d_is_addr_reg()
195 	{ .compatible = "nvidia,tegra114-gr2d", .data = &tegra114_gr2d_soc },
196 	{ .compatible = "nvidia,tegra30-gr2d", .data = &tegra30_gr2d_soc },
197 	{ .compatible = "nvidia,tegra20-gr2d", .data = &tegra20_gr2d_soc },
219 static int gr2d_get_resets(struct device *dev, struct gr2d *gr2d)  in gr2d_get_resets()  argument
223 	gr2d->resets[RST_MC].id = "mc";  in gr2d_get_resets()
224 	gr2d->resets[RST_GR2D].id = "2d";  in gr2d_get_resets()
225 	gr2d->nresets = RST_GR2D_MAX;  in gr2d_get_resets()
228 				dev, gr2d->nresets, gr2d->resets);  in gr2d_get_resets()
234 	if (WARN_ON(!gr2d->resets[RST_GR2D].rstc))  in gr2d_get_resets()
235 		return -ENOENT;  in gr2d_get_resets()
242 	struct device *dev = &pdev->dev;  in gr2d_probe()
244 	struct gr2d *gr2d;  in gr2d_probe()  local
248 	gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);  in gr2d_probe()
249 	if (!gr2d)  in gr2d_probe()
250 		return -ENOMEM;  in gr2d_probe()
252 	platform_set_drvdata(pdev, gr2d);  in gr2d_probe()
254 	gr2d->soc = of_device_get_match_data(dev);  in gr2d_probe()
258 		return -ENOMEM;  in gr2d_probe()
260 	gr2d->clk = devm_clk_get(dev, NULL);  in gr2d_probe()
261 	if (IS_ERR(gr2d->clk)) {  in gr2d_probe()
263 		return PTR_ERR(gr2d->clk);  in gr2d_probe()
266 	err = gr2d_get_resets(dev, gr2d);  in gr2d_probe()
270 	INIT_LIST_HEAD(&gr2d->client.base.list);  in gr2d_probe()
271 	gr2d->client.base.ops = &gr2d_client_ops;  in gr2d_probe()
272 	gr2d->client.base.dev = dev;  in gr2d_probe()
273 	gr2d->client.base.class = HOST1X_CLASS_GR2D;  in gr2d_probe()
274 	gr2d->client.base.syncpts = syncpts;  in gr2d_probe()
275 	gr2d->client.base.num_syncpts = 1;  in gr2d_probe()
277 	INIT_LIST_HEAD(&gr2d->client.list);  in gr2d_probe()
278 	gr2d->client.version = gr2d->soc->version;  in gr2d_probe()
279 	gr2d->client.ops = &gr2d_ops;  in gr2d_probe()
285 	err = host1x_client_register(&gr2d->client.base);  in gr2d_probe()
293 		set_bit(gr2d_addr_regs[i], gr2d->addr_regs);  in gr2d_probe()
300 	struct gr2d *gr2d = platform_get_drvdata(pdev);  in gr2d_remove()  local
303 	err = host1x_client_unregister(&gr2d->client.base);  in gr2d_remove()
305 		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",  in gr2d_remove()
315 	struct gr2d *gr2d = dev_get_drvdata(dev);  in gr2d_runtime_suspend()  local
318 	host1x_channel_stop(gr2d->channel);  in gr2d_runtime_suspend()
319 	reset_control_bulk_release(gr2d->nresets, gr2d->resets);  in gr2d_runtime_suspend()
322 	 * GR2D module shouldn't be reset while hardware is idling, otherwise  in gr2d_runtime_suspend()
324 	 * after reset. GR2D module could be either hot-reset or reset after  in gr2d_runtime_suspend()
325 	 * power-gating of the HEG partition. Hence we will put in reset only  in gr2d_runtime_suspend()
327 	 * of resetting GR2D module across power-gating.  in gr2d_runtime_suspend()
329 	 * On Tegra20 there is no HEG partition, but it's okay to have  in gr2d_runtime_suspend()
333 	err = reset_control_acquire(gr2d->resets[RST_MC].rstc);  in gr2d_runtime_suspend()
339 	err = reset_control_assert(gr2d->resets[RST_MC].rstc);  in gr2d_runtime_suspend()
340 	reset_control_release(gr2d->resets[RST_MC].rstc);  in gr2d_runtime_suspend()
346 	clk_disable_unprepare(gr2d->clk);  in gr2d_runtime_suspend()
351 	reset_control_bulk_acquire(gr2d->nresets, gr2d->resets);  in gr2d_runtime_suspend()
352 	reset_control_bulk_deassert(gr2d->nresets, gr2d->resets);  in gr2d_runtime_suspend()
359 	struct gr2d *gr2d = dev_get_drvdata(dev);  in gr2d_runtime_resume()  local
362 	err = reset_control_bulk_acquire(gr2d->nresets, gr2d->resets);  in gr2d_runtime_resume()
368 	err = clk_prepare_enable(gr2d->clk);  in gr2d_runtime_resume()
377 	err = reset_control_bulk_deassert(gr2d->nresets, gr2d->resets);  in gr2d_runtime_resume()
386 	clk_disable_unprepare(gr2d->clk);  in gr2d_runtime_resume()
388 	reset_control_bulk_release(gr2d->nresets, gr2d->resets);  in gr2d_runtime_resume()
401 		.name = "tegra-gr2d",