1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
  4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
  5 */
  6
  7#include <linux/console.h>
  8#include <linux/of.h>
  9#include <linux/module.h>
 10#include <linux/pm_runtime.h>
 11
 12#include <drm/drm_atomic.h>
 13#include <drm/drm_atomic_helper.h>
 14#include <drm/drm_client_setup.h>
 15#include <drm/drm_crtc.h>
 16#include <drm/drm_drv.h>
 17#include <drm/drm_fbdev_dma.h>
 18#include <drm/drm_gem_dma_helper.h>
 19#include <drm/drm_managed.h>
 20#include <drm/drm_module.h>
 21#include <drm/drm_probe_helper.h>
 22
 23#include "tidss_dispc.h"
 24#include "tidss_drv.h"
 25#include "tidss_kms.h"
 26#include "tidss_irq.h"
 27
 28/* Power management */
 29
 30int tidss_runtime_get(struct tidss_device *tidss)
 31{
 32	int r;
 33
 34	dev_dbg(tidss->dev, "%s\n", __func__);
 35
 36	r = pm_runtime_resume_and_get(tidss->dev);
 37	WARN_ON(r < 0);
 38	return r;
 39}
 40
 41void tidss_runtime_put(struct tidss_device *tidss)
 42{
 43	int r;
 44
 45	dev_dbg(tidss->dev, "%s\n", __func__);
 46
 47	pm_runtime_mark_last_busy(tidss->dev);
 48
 49	r = pm_runtime_put_autosuspend(tidss->dev);
 50	WARN_ON(r < 0);
 51}
 52
 53static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
 54{
 55	struct tidss_device *tidss = dev_get_drvdata(dev);
 56
 57	dev_dbg(dev, "%s\n", __func__);
 58
 59	return dispc_runtime_suspend(tidss->dispc);
 60}
 61
 62static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
 63{
 64	struct tidss_device *tidss = dev_get_drvdata(dev);
 65	int r;
 66
 67	dev_dbg(dev, "%s\n", __func__);
 68
 69	r = dispc_runtime_resume(tidss->dispc);
 70	if (r)
 71		return r;
 72
 73	return 0;
 74}
 75
 76static int __maybe_unused tidss_suspend(struct device *dev)
 77{
 78	struct tidss_device *tidss = dev_get_drvdata(dev);
 79
 80	dev_dbg(dev, "%s\n", __func__);
 81
 82	return drm_mode_config_helper_suspend(&tidss->ddev);
 83}
 84
 85static int __maybe_unused tidss_resume(struct device *dev)
 86{
 87	struct tidss_device *tidss = dev_get_drvdata(dev);
 88
 89	dev_dbg(dev, "%s\n", __func__);
 90
 91	return drm_mode_config_helper_resume(&tidss->ddev);
 92}
 93
 94static __maybe_unused const struct dev_pm_ops tidss_pm_ops = {
 95	SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
 96	SET_RUNTIME_PM_OPS(tidss_pm_runtime_suspend, tidss_pm_runtime_resume, NULL)
 97};
 98
 99/* DRM device Information */
100
101static void tidss_release(struct drm_device *ddev)
102{
103	drm_kms_helper_poll_fini(ddev);
104}
105
106DEFINE_DRM_GEM_DMA_FOPS(tidss_fops);
107
108static const struct drm_driver tidss_driver = {
109	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
110	.fops			= &tidss_fops,
111	.release		= tidss_release,
112	DRM_GEM_DMA_DRIVER_OPS_VMAP,
113	DRM_FBDEV_DMA_DRIVER_OPS,
114	.name			= "tidss",
115	.desc			= "TI Keystone DSS",
116	.date			= "20180215",
117	.major			= 1,
118	.minor			= 0,
119};
120
121static int tidss_probe(struct platform_device *pdev)
122{
123	struct device *dev = &pdev->dev;
124	struct tidss_device *tidss;
125	struct drm_device *ddev;
126	int ret;
127	int irq;
128
129	dev_dbg(dev, "%s\n", __func__);
130
131	tidss = devm_drm_dev_alloc(&pdev->dev, &tidss_driver,
132				   struct tidss_device, ddev);
133	if (IS_ERR(tidss))
134		return PTR_ERR(tidss);
135
136	ddev = &tidss->ddev;
137
138	tidss->dev = dev;
139	tidss->feat = of_device_get_match_data(dev);
140
141	platform_set_drvdata(pdev, tidss);
142
143	spin_lock_init(&tidss->wait_lock);
144
145	ret = dispc_init(tidss);
146	if (ret) {
147		dev_err(dev, "failed to initialize dispc: %d\n", ret);
148		return ret;
149	}
150
151	pm_runtime_enable(dev);
152
153	pm_runtime_set_autosuspend_delay(dev, 1000);
154	pm_runtime_use_autosuspend(dev);
155
156#ifndef CONFIG_PM
157	/* If we don't have PM, we need to call resume manually */
158	dispc_runtime_resume(tidss->dispc);
159#endif
160
161	ret = tidss_modeset_init(tidss);
162	if (ret < 0) {
163		if (ret != -EPROBE_DEFER)
164			dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
165		goto err_runtime_suspend;
166	}
167
168	irq = platform_get_irq(pdev, 0);
169	if (irq < 0) {
170		ret = irq;
171		goto err_runtime_suspend;
172	}
173	tidss->irq = irq;
174
175	ret = tidss_irq_install(ddev, irq);
176	if (ret) {
177		dev_err(dev, "tidss_irq_install failed: %d\n", ret);
178		goto err_runtime_suspend;
179	}
180
181	drm_kms_helper_poll_init(ddev);
182
183	drm_mode_config_reset(ddev);
184
185	ret = drm_dev_register(ddev, 0);
186	if (ret) {
187		dev_err(dev, "failed to register DRM device\n");
188		goto err_irq_uninstall;
189	}
190
191	drm_client_setup(ddev, NULL);
192
193	dev_dbg(dev, "%s done\n", __func__);
194
195	return 0;
196
197err_irq_uninstall:
198	tidss_irq_uninstall(ddev);
199
200err_runtime_suspend:
201#ifndef CONFIG_PM
202	dispc_runtime_suspend(tidss->dispc);
203#endif
204	pm_runtime_dont_use_autosuspend(dev);
205	pm_runtime_disable(dev);
206
207	return ret;
208}
209
210static void tidss_remove(struct platform_device *pdev)
211{
212	struct device *dev = &pdev->dev;
213	struct tidss_device *tidss = platform_get_drvdata(pdev);
214	struct drm_device *ddev = &tidss->ddev;
215
216	dev_dbg(dev, "%s\n", __func__);
217
218	drm_dev_unregister(ddev);
219
220	drm_atomic_helper_shutdown(ddev);
221
222	tidss_irq_uninstall(ddev);
223
224#ifndef CONFIG_PM
225	/* If we don't have PM, we need to call suspend manually */
226	dispc_runtime_suspend(tidss->dispc);
227#endif
228	pm_runtime_dont_use_autosuspend(dev);
229	pm_runtime_disable(dev);
230
231	/* devm allocated dispc goes away with the dev so mark it NULL */
232	dispc_remove(tidss);
233
234	dev_dbg(dev, "%s done\n", __func__);
235}
236
237static void tidss_shutdown(struct platform_device *pdev)
238{
239	drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
240}
241
242static const struct of_device_id tidss_of_table[] = {
243	{ .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
244	{ .compatible = "ti,am625-dss", .data = &dispc_am625_feats, },
245	{ .compatible = "ti,am62a7-dss", .data = &dispc_am62a7_feats, },
246	{ .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
247	{ .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
248	{ }
249};
250
251MODULE_DEVICE_TABLE(of, tidss_of_table);
252
253static struct platform_driver tidss_platform_driver = {
254	.probe		= tidss_probe,
255	.remove		= tidss_remove,
256	.shutdown	= tidss_shutdown,
257	.driver		= {
258		.name	= "tidss",
259		.pm	= pm_ptr(&tidss_pm_ops),
260		.of_match_table = tidss_of_table,
261		.suppress_bind_attrs = true,
262	},
263};
264
265drm_module_platform_driver(tidss_platform_driver);
266
267MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
268MODULE_DESCRIPTION("TI Keystone DSS Driver");
269MODULE_LICENSE("GPL v2");

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
  4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
  5 */
  6
  7#include <linux/console.h>
  8#include <linux/of.h>
  9#include <linux/module.h>
 10#include <linux/pm_runtime.h>
 11
 12#include <drm/drm_atomic.h>
 13#include <drm/drm_atomic_helper.h>
 
 14#include <drm/drm_crtc.h>
 15#include <drm/drm_drv.h>
 16#include <drm/drm_fbdev_dma.h>
 17#include <drm/drm_gem_dma_helper.h>
 18#include <drm/drm_managed.h>
 19#include <drm/drm_module.h>
 20#include <drm/drm_probe_helper.h>
 21
 22#include "tidss_dispc.h"
 23#include "tidss_drv.h"
 24#include "tidss_kms.h"
 25#include "tidss_irq.h"
 26
 27/* Power management */
 28
 29int tidss_runtime_get(struct tidss_device *tidss)
 30{
 31	int r;
 32
 33	dev_dbg(tidss->dev, "%s\n", __func__);
 34
 35	r = pm_runtime_resume_and_get(tidss->dev);
 36	WARN_ON(r < 0);
 37	return r;
 38}
 39
 40void tidss_runtime_put(struct tidss_device *tidss)
 41{
 42	int r;
 43
 44	dev_dbg(tidss->dev, "%s\n", __func__);
 45
 46	pm_runtime_mark_last_busy(tidss->dev);
 47
 48	r = pm_runtime_put_autosuspend(tidss->dev);
 49	WARN_ON(r < 0);
 50}
 51
 52static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
 53{
 54	struct tidss_device *tidss = dev_get_drvdata(dev);
 55
 56	dev_dbg(dev, "%s\n", __func__);
 57
 58	return dispc_runtime_suspend(tidss->dispc);
 59}
 60
 61static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
 62{
 63	struct tidss_device *tidss = dev_get_drvdata(dev);
 64	int r;
 65
 66	dev_dbg(dev, "%s\n", __func__);
 67
 68	r = dispc_runtime_resume(tidss->dispc);
 69	if (r)
 70		return r;
 71
 72	return 0;
 73}
 74
 75static int __maybe_unused tidss_suspend(struct device *dev)
 76{
 77	struct tidss_device *tidss = dev_get_drvdata(dev);
 78
 79	dev_dbg(dev, "%s\n", __func__);
 80
 81	return drm_mode_config_helper_suspend(&tidss->ddev);
 82}
 83
 84static int __maybe_unused tidss_resume(struct device *dev)
 85{
 86	struct tidss_device *tidss = dev_get_drvdata(dev);
 87
 88	dev_dbg(dev, "%s\n", __func__);
 89
 90	return drm_mode_config_helper_resume(&tidss->ddev);
 91}
 92
 93static __maybe_unused const struct dev_pm_ops tidss_pm_ops = {
 94	SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
 95	SET_RUNTIME_PM_OPS(tidss_pm_runtime_suspend, tidss_pm_runtime_resume, NULL)
 96};
 97
 98/* DRM device Information */
 99
100static void tidss_release(struct drm_device *ddev)
101{
102	drm_kms_helper_poll_fini(ddev);
103}
104
105DEFINE_DRM_GEM_DMA_FOPS(tidss_fops);
106
107static const struct drm_driver tidss_driver = {
108	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
109	.fops			= &tidss_fops,
110	.release		= tidss_release,
111	DRM_GEM_DMA_DRIVER_OPS_VMAP,
 
112	.name			= "tidss",
113	.desc			= "TI Keystone DSS",
114	.date			= "20180215",
115	.major			= 1,
116	.minor			= 0,
117};
118
119static int tidss_probe(struct platform_device *pdev)
120{
121	struct device *dev = &pdev->dev;
122	struct tidss_device *tidss;
123	struct drm_device *ddev;
124	int ret;
125	int irq;
126
127	dev_dbg(dev, "%s\n", __func__);
128
129	tidss = devm_drm_dev_alloc(&pdev->dev, &tidss_driver,
130				   struct tidss_device, ddev);
131	if (IS_ERR(tidss))
132		return PTR_ERR(tidss);
133
134	ddev = &tidss->ddev;
135
136	tidss->dev = dev;
137	tidss->feat = of_device_get_match_data(dev);
138
139	platform_set_drvdata(pdev, tidss);
140
141	spin_lock_init(&tidss->wait_lock);
142
143	ret = dispc_init(tidss);
144	if (ret) {
145		dev_err(dev, "failed to initialize dispc: %d\n", ret);
146		return ret;
147	}
148
149	pm_runtime_enable(dev);
150
151	pm_runtime_set_autosuspend_delay(dev, 1000);
152	pm_runtime_use_autosuspend(dev);
153
154#ifndef CONFIG_PM
155	/* If we don't have PM, we need to call resume manually */
156	dispc_runtime_resume(tidss->dispc);
157#endif
158
159	ret = tidss_modeset_init(tidss);
160	if (ret < 0) {
161		if (ret != -EPROBE_DEFER)
162			dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
163		goto err_runtime_suspend;
164	}
165
166	irq = platform_get_irq(pdev, 0);
167	if (irq < 0) {
168		ret = irq;
169		goto err_runtime_suspend;
170	}
171	tidss->irq = irq;
172
173	ret = tidss_irq_install(ddev, irq);
174	if (ret) {
175		dev_err(dev, "tidss_irq_install failed: %d\n", ret);
176		goto err_runtime_suspend;
177	}
178
179	drm_kms_helper_poll_init(ddev);
180
181	drm_mode_config_reset(ddev);
182
183	ret = drm_dev_register(ddev, 0);
184	if (ret) {
185		dev_err(dev, "failed to register DRM device\n");
186		goto err_irq_uninstall;
187	}
188
189	drm_fbdev_dma_setup(ddev, 32);
190
191	dev_dbg(dev, "%s done\n", __func__);
192
193	return 0;
194
195err_irq_uninstall:
196	tidss_irq_uninstall(ddev);
197
198err_runtime_suspend:
199#ifndef CONFIG_PM
200	dispc_runtime_suspend(tidss->dispc);
201#endif
202	pm_runtime_dont_use_autosuspend(dev);
203	pm_runtime_disable(dev);
204
205	return ret;
206}
207
208static void tidss_remove(struct platform_device *pdev)
209{
210	struct device *dev = &pdev->dev;
211	struct tidss_device *tidss = platform_get_drvdata(pdev);
212	struct drm_device *ddev = &tidss->ddev;
213
214	dev_dbg(dev, "%s\n", __func__);
215
216	drm_dev_unregister(ddev);
217
218	drm_atomic_helper_shutdown(ddev);
219
220	tidss_irq_uninstall(ddev);
221
222#ifndef CONFIG_PM
223	/* If we don't have PM, we need to call suspend manually */
224	dispc_runtime_suspend(tidss->dispc);
225#endif
226	pm_runtime_dont_use_autosuspend(dev);
227	pm_runtime_disable(dev);
228
229	/* devm allocated dispc goes away with the dev so mark it NULL */
230	dispc_remove(tidss);
231
232	dev_dbg(dev, "%s done\n", __func__);
233}
234
235static void tidss_shutdown(struct platform_device *pdev)
236{
237	drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
238}
239
240static const struct of_device_id tidss_of_table[] = {
241	{ .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
242	{ .compatible = "ti,am625-dss", .data = &dispc_am625_feats, },
243	{ .compatible = "ti,am62a7-dss", .data = &dispc_am62a7_feats, },
244	{ .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
245	{ .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
246	{ }
247};
248
249MODULE_DEVICE_TABLE(of, tidss_of_table);
250
251static struct platform_driver tidss_platform_driver = {
252	.probe		= tidss_probe,
253	.remove_new	= tidss_remove,
254	.shutdown	= tidss_shutdown,
255	.driver		= {
256		.name	= "tidss",
257		.pm	= pm_ptr(&tidss_pm_ops),
258		.of_match_table = tidss_of_table,
259		.suppress_bind_attrs = true,
260	},
261};
262
263drm_module_platform_driver(tidss_platform_driver);
264
265MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
266MODULE_DESCRIPTION("TI Keystone DSS Driver");
267MODULE_LICENSE("GPL v2");