1 // SPDX-License-Identifier: GPL-2.0-only
9 #include <linux/host1x.h>
61 	struct drm_device *dev = dev_get_drvdata(client->host);  in gr3d_init()
66 	gr3d->channel = host1x_channel_request(client);  in gr3d_init()
67 	if (!gr3d->channel)  in gr3d_init()
68 		return -ENOMEM;  in gr3d_init()
70 	client->syncpts[0] = host1x_syncpt_request(client, flags);  in gr3d_init()
71 	if (!client->syncpts[0]) {  in gr3d_init()
72 		err = -ENOMEM;  in gr3d_init()
73 		dev_err(client->dev, "failed to request syncpoint: %d\n", err);  in gr3d_init()
79 		dev_err(client->dev, "failed to attach to domain: %d\n", err);  in gr3d_init()
83 	pm_runtime_enable(client->dev);  in gr3d_init()
84 	pm_runtime_use_autosuspend(client->dev);  in gr3d_init()
85 	pm_runtime_set_autosuspend_delay(client->dev, 200);  in gr3d_init()
87 	err = tegra_drm_register_client(dev->dev_private, drm);  in gr3d_init()
89 		dev_err(client->dev, "failed to register client: %d\n", err);  in gr3d_init()
96 	pm_runtime_dont_use_autosuspend(client->dev);  in gr3d_init()
97 	pm_runtime_force_suspend(client->dev);  in gr3d_init()
101 	host1x_syncpt_put(client->syncpts[0]);  in gr3d_init()
103 	host1x_channel_put(gr3d->channel);  in gr3d_init()
110 	struct drm_device *dev = dev_get_drvdata(client->host);  in gr3d_exit()
114 	err = tegra_drm_unregister_client(dev->dev_private, drm);  in gr3d_exit()
118 	pm_runtime_dont_use_autosuspend(client->dev);  in gr3d_exit()
119 	pm_runtime_force_suspend(client->dev);  in gr3d_exit()
122 	host1x_syncpt_put(client->syncpts[0]);  in gr3d_exit()
123 	host1x_channel_put(gr3d->channel);  in gr3d_exit()
125 	gr3d->channel = NULL;  in gr3d_exit()
140 	context->channel = host1x_channel_get(gr3d->channel);  in gr3d_open_channel()
141 	if (!context->channel)  in gr3d_open_channel()
142 		return -ENOMEM;  in gr3d_open_channel()
149 	host1x_channel_put(context->channel);  in gr3d_close_channel()
152 static int gr3d_is_addr_reg(struct device *dev, u32 class, u32 offset)  in gr3d_is_addr_reg()  argument
156 	switch (class) {  in gr3d_is_addr_reg()
167 		if (test_bit(offset, gr3d->addr_regs))  in gr3d_is_addr_reg()
202 	{ .compatible = "nvidia,tegra114-gr3d", .data = &tegra114_gr3d_soc },
203 	{ .compatible = "nvidia,tegra30-gr3d", .data = &tegra30_gr3d_soc },
204 	{ .compatible = "nvidia,tegra20-gr3d", .data = &tegra20_gr3d_soc },
324 	 * Tegra20 device-tree doesn't specify 3d clock name and there is only  in gr3d_power_up_legacy_domain()
325 	 * one clock for Tegra20. Tegra30+ device-trees always specified names  in gr3d_power_up_legacy_domain()
328 	if (gr3d->nclocks == 1) {  in gr3d_power_up_legacy_domain()
332 		clk = gr3d->clocks[0].clk;  in gr3d_power_up_legacy_domain()
334 		for (i = 0; i < gr3d->nclocks; i++) {  in gr3d_power_up_legacy_domain()
335 			if (WARN_ON(!gr3d->clocks[i].id))  in gr3d_power_up_legacy_domain()
338 			if (!strcmp(gr3d->clocks[i].id, name)) {  in gr3d_power_up_legacy_domain()
339 				clk = gr3d->clocks[i].clk;  in gr3d_power_up_legacy_domain()
344 		if (WARN_ON(i == gr3d->nclocks))  in gr3d_power_up_legacy_domain()
345 			return -EINVAL;  in gr3d_power_up_legacy_domain()
372 	 * while GENPD not. Hence keep clock-enable balanced.  in gr3d_power_up_legacy_domain()
393 	err = of_count_phandle_with_args(dev->of_node, "power-domains",  in gr3d_init_power()
394 					 "#power-domain-cells");  in gr3d_init_power()
396 		if (err != -ENOENT)  in gr3d_init_power()
400 		 * Older device-trees don't use GENPD. In this case we should  in gr3d_init_power()
421 	if (dev->pm_domain)  in gr3d_init_power()
433 			return -EINVAL;  in gr3d_init_power()
439 			return -EINVAL;  in gr3d_init_power()
454 	err = devm_clk_bulk_get_all(dev, &gr3d->clocks);  in gr3d_get_clocks()
459 	gr3d->nclocks = err;  in gr3d_get_clocks()
461 	if (gr3d->nclocks != gr3d->soc->num_clocks) {  in gr3d_get_clocks()
462 		dev_err(dev, "invalid number of clocks: %u\n", gr3d->nclocks);  in gr3d_get_clocks()
463 		return -ENOENT;  in gr3d_get_clocks()
473 	gr3d->resets[RST_MC].id = "mc";  in gr3d_get_resets()
474 	gr3d->resets[RST_MC2].id = "mc2";  in gr3d_get_resets()
475 	gr3d->resets[RST_GR3D].id = "3d";  in gr3d_get_resets()
476 	gr3d->resets[RST_GR3D2].id = "3d2";  in gr3d_get_resets()
477 	gr3d->nresets = gr3d->soc->num_resets;  in gr3d_get_resets()
480 				dev, gr3d->nresets, gr3d->resets);  in gr3d_get_resets()
486 	if (WARN_ON(!gr3d->resets[RST_GR3D].rstc) ||  in gr3d_get_resets()
487 	    WARN_ON(!gr3d->resets[RST_GR3D2].rstc && gr3d->nresets == 4))  in gr3d_get_resets()
488 		return -ENOENT;  in gr3d_get_resets()
500 	gr3d = devm_kzalloc(&pdev->dev, sizeof(*gr3d), GFP_KERNEL);  in gr3d_probe()
502 		return -ENOMEM;  in gr3d_probe()
506 	gr3d->soc = of_device_get_match_data(&pdev->dev);  in gr3d_probe()
508 	syncpts = devm_kzalloc(&pdev->dev, sizeof(*syncpts), GFP_KERNEL);  in gr3d_probe()
510 		return -ENOMEM;  in gr3d_probe()
512 	err = gr3d_get_clocks(&pdev->dev, gr3d);  in gr3d_probe()
516 	err = gr3d_get_resets(&pdev->dev, gr3d);  in gr3d_probe()
520 	err = gr3d_init_power(&pdev->dev, gr3d);  in gr3d_probe()
524 	INIT_LIST_HEAD(&gr3d->client.base.list);  in gr3d_probe()
525 	gr3d->client.base.ops = &gr3d_client_ops;  in gr3d_probe()
526 	gr3d->client.base.dev = &pdev->dev;  in gr3d_probe()
527 	gr3d->client.base.class = HOST1X_CLASS_GR3D;  in gr3d_probe()
528 	gr3d->client.base.syncpts = syncpts;  in gr3d_probe()
529 	gr3d->client.base.num_syncpts = 1;  in gr3d_probe()
531 	INIT_LIST_HEAD(&gr3d->client.list);  in gr3d_probe()
532 	gr3d->client.version = gr3d->soc->version;  in gr3d_probe()
533 	gr3d->client.ops = &gr3d_ops;  in gr3d_probe()
535 	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);  in gr3d_probe()
539 	err = host1x_client_register(&gr3d->client.base);  in gr3d_probe()
541 		dev_err(&pdev->dev, "failed to register host1x client: %d\n",  in gr3d_probe()
548 		set_bit(gr3d_addr_regs[i], gr3d->addr_regs);  in gr3d_probe()
558 	err = host1x_client_unregister(&gr3d->client.base);  in gr3d_remove()
560 		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",  in gr3d_remove()
573 	host1x_channel_stop(gr3d->channel);  in gr3d_runtime_suspend()
575 	err = reset_control_bulk_assert(gr3d->nresets, gr3d->resets);  in gr3d_runtime_suspend()
584 	 * Older device-trees don't specify MC resets and power-gating can't  in gr3d_runtime_suspend()
586 	 * for older DTBs. For newer DTBs, GENPD will perform the power-gating.  in gr3d_runtime_suspend()
589 	clk_bulk_disable_unprepare(gr3d->nclocks, gr3d->clocks);  in gr3d_runtime_suspend()
590 	reset_control_bulk_release(gr3d->nresets, gr3d->resets);  in gr3d_runtime_suspend()
600 	err = reset_control_bulk_acquire(gr3d->nresets, gr3d->resets);  in gr3d_runtime_resume()
606 	err = clk_bulk_prepare_enable(gr3d->nclocks, gr3d->clocks);  in gr3d_runtime_resume()
612 	err = reset_control_bulk_deassert(gr3d->nresets, gr3d->resets);  in gr3d_runtime_resume()
621 	clk_bulk_disable_unprepare(gr3d->nclocks, gr3d->clocks);  in gr3d_runtime_resume()
623 	reset_control_bulk_release(gr3d->nresets, gr3d->resets);  in gr3d_runtime_resume()
636 		.name = "tegra-gr3d",