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7#include <linux/console.h>
8#include <linux/of_device.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_crtc_helper.h>
16#include <drm/drm_drv.h>
17#include <drm/drm_fb_helper.h>
18#include <drm/drm_gem_cma_helper.h>
19#include <drm/drm_managed.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
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_get_sync(tidss->dev);
36 WARN_ON(r < 0);
37 return r < 0 ? r : 0;
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 r = pm_runtime_put_sync(tidss->dev);
47 WARN_ON(r < 0);
48}
49
50static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
51{
52 struct tidss_device *tidss = dev_get_drvdata(dev);
53
54 dev_dbg(dev, "%s\n", __func__);
55
56 return dispc_runtime_suspend(tidss->dispc);
57}
58
59static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
60{
61 struct tidss_device *tidss = dev_get_drvdata(dev);
62 int r;
63
64 dev_dbg(dev, "%s\n", __func__);
65
66 r = dispc_runtime_resume(tidss->dispc);
67 if (r)
68 return r;
69
70 return 0;
71}
72
73static int __maybe_unused tidss_suspend(struct device *dev)
74{
75 struct tidss_device *tidss = dev_get_drvdata(dev);
76
77 dev_dbg(dev, "%s\n", __func__);
78
79 return drm_mode_config_helper_suspend(&tidss->ddev);
80}
81
82static int __maybe_unused tidss_resume(struct device *dev)
83{
84 struct tidss_device *tidss = dev_get_drvdata(dev);
85
86 dev_dbg(dev, "%s\n", __func__);
87
88 return drm_mode_config_helper_resume(&tidss->ddev);
89}
90
91#ifdef CONFIG_PM
92
93static const struct dev_pm_ops tidss_pm_ops = {
94 .runtime_suspend = tidss_pm_runtime_suspend,
95 .runtime_resume = tidss_pm_runtime_resume,
96 SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
97};
98
99#endif
100
101
102
103static void tidss_release(struct drm_device *ddev)
104{
105 drm_kms_helper_poll_fini(ddev);
106}
107
108DEFINE_DRM_GEM_CMA_FOPS(tidss_fops);
109
110static const struct drm_driver tidss_driver = {
111 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
112 .fops = &tidss_fops,
113 .release = tidss_release,
114 DRM_GEM_CMA_DRIVER_OPS_VMAP,
115 .name = "tidss",
116 .desc = "TI Keystone DSS",
117 .date = "20180215",
118 .major = 1,
119 .minor = 0,
120};
121
122static int tidss_probe(struct platform_device *pdev)
123{
124 struct device *dev = &pdev->dev;
125 struct tidss_device *tidss;
126 struct drm_device *ddev;
127 int ret;
128 int irq;
129
130 dev_dbg(dev, "%s\n", __func__);
131
132 tidss = devm_drm_dev_alloc(&pdev->dev, &tidss_driver,
133 struct tidss_device, ddev);
134 if (IS_ERR(tidss))
135 return PTR_ERR(tidss);
136
137 ddev = &tidss->ddev;
138
139 tidss->dev = dev;
140 tidss->feat = of_device_get_match_data(dev);
141
142 platform_set_drvdata(pdev, tidss);
143
144 ret = dispc_init(tidss);
145 if (ret) {
146 dev_err(dev, "failed to initialize dispc: %d\n", ret);
147 return ret;
148 }
149
150 pm_runtime_enable(dev);
151
152#ifndef CONFIG_PM
153
154 dispc_runtime_resume(tidss->dispc);
155#endif
156
157 ret = tidss_modeset_init(tidss);
158 if (ret < 0) {
159 if (ret != -EPROBE_DEFER)
160 dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
161 goto err_runtime_suspend;
162 }
163
164 irq = platform_get_irq(pdev, 0);
165 if (irq < 0) {
166 ret = irq;
167 goto err_runtime_suspend;
168 }
169 tidss->irq = irq;
170
171 ret = tidss_irq_install(ddev, irq);
172 if (ret) {
173 dev_err(dev, "tidss_irq_install failed: %d\n", ret);
174 goto err_runtime_suspend;
175 }
176
177 drm_kms_helper_poll_init(ddev);
178
179 drm_mode_config_reset(ddev);
180
181 ret = drm_dev_register(ddev, 0);
182 if (ret) {
183 dev_err(dev, "failed to register DRM device\n");
184 goto err_irq_uninstall;
185 }
186
187 drm_fbdev_generic_setup(ddev, 32);
188
189 dev_dbg(dev, "%s done\n", __func__);
190
191 return 0;
192
193err_irq_uninstall:
194 tidss_irq_uninstall(ddev);
195
196err_runtime_suspend:
197#ifndef CONFIG_PM
198 dispc_runtime_suspend(tidss->dispc);
199#endif
200 pm_runtime_disable(dev);
201
202 return ret;
203}
204
205static int tidss_remove(struct platform_device *pdev)
206{
207 struct device *dev = &pdev->dev;
208 struct tidss_device *tidss = platform_get_drvdata(pdev);
209 struct drm_device *ddev = &tidss->ddev;
210
211 dev_dbg(dev, "%s\n", __func__);
212
213 drm_dev_unregister(ddev);
214
215 drm_atomic_helper_shutdown(ddev);
216
217 tidss_irq_uninstall(ddev);
218
219#ifndef CONFIG_PM
220
221 dispc_runtime_suspend(tidss->dispc);
222#endif
223 pm_runtime_disable(dev);
224
225
226 dispc_remove(tidss);
227
228 dev_dbg(dev, "%s done\n", __func__);
229
230 return 0;
231}
232
233static void tidss_shutdown(struct platform_device *pdev)
234{
235 drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
236}
237
238static const struct of_device_id tidss_of_table[] = {
239 { .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
240 { .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
241 { .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
242 { }
243};
244
245MODULE_DEVICE_TABLE(of, tidss_of_table);
246
247static struct platform_driver tidss_platform_driver = {
248 .probe = tidss_probe,
249 .remove = tidss_remove,
250 .shutdown = tidss_shutdown,
251 .driver = {
252 .name = "tidss",
253#ifdef CONFIG_PM
254 .pm = &tidss_pm_ops,
255#endif
256 .of_match_table = tidss_of_table,
257 .suppress_bind_attrs = true,
258 },
259};
260
261module_platform_driver(tidss_platform_driver);
262
263MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
264MODULE_DESCRIPTION("TI Keystone DSS Driver");
265MODULE_LICENSE("GPL v2");
266
