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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_irq.h>
20#include <drm/drm_managed.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
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_get_sync(tidss->dev);
37 WARN_ON(r < 0);
38 return r < 0 ? r : 0;
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 r = pm_runtime_put_sync(tidss->dev);
48 WARN_ON(r < 0);
49}
50
51static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
52{
53 struct tidss_device *tidss = dev_get_drvdata(dev);
54
55 dev_dbg(dev, "%s\n", __func__);
56
57 return dispc_runtime_suspend(tidss->dispc);
58}
59
60static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
61{
62 struct tidss_device *tidss = dev_get_drvdata(dev);
63 int r;
64
65 dev_dbg(dev, "%s\n", __func__);
66
67 r = dispc_runtime_resume(tidss->dispc);
68 if (r)
69 return r;
70
71 return 0;
72}
73
74static int __maybe_unused tidss_suspend(struct device *dev)
75{
76 struct tidss_device *tidss = dev_get_drvdata(dev);
77
78 dev_dbg(dev, "%s\n", __func__);
79
80 return drm_mode_config_helper_suspend(&tidss->ddev);
81}
82
83static int __maybe_unused tidss_resume(struct device *dev)
84{
85 struct tidss_device *tidss = dev_get_drvdata(dev);
86
87 dev_dbg(dev, "%s\n", __func__);
88
89 return drm_mode_config_helper_resume(&tidss->ddev);
90}
91
92#ifdef CONFIG_PM
93
94static const struct dev_pm_ops tidss_pm_ops = {
95 .runtime_suspend = tidss_pm_runtime_suspend,
96 .runtime_resume = tidss_pm_runtime_resume,
97 SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
98};
99
100#endif
101
102
103
104static void tidss_release(struct drm_device *ddev)
105{
106 drm_kms_helper_poll_fini(ddev);
107}
108
109DEFINE_DRM_GEM_CMA_FOPS(tidss_fops);
110
111static struct drm_driver tidss_driver = {
112 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
113 .fops = &tidss_fops,
114 .release = tidss_release,
115 DRM_GEM_CMA_DRIVER_OPS_VMAP,
116 .name = "tidss",
117 .desc = "TI Keystone DSS",
118 .date = "20180215",
119 .major = 1,
120 .minor = 0,
121
122 .irq_preinstall = tidss_irq_preinstall,
123 .irq_postinstall = tidss_irq_postinstall,
124 .irq_handler = tidss_irq_handler,
125 .irq_uninstall = tidss_irq_uninstall,
126};
127
128static int tidss_probe(struct platform_device *pdev)
129{
130 struct device *dev = &pdev->dev;
131 struct tidss_device *tidss;
132 struct drm_device *ddev;
133 int ret;
134 int irq;
135
136 dev_dbg(dev, "%s\n", __func__);
137
138 tidss = devm_drm_dev_alloc(&pdev->dev, &tidss_driver,
139 struct tidss_device, ddev);
140 if (IS_ERR(tidss))
141 return PTR_ERR(tidss);
142
143 ddev = &tidss->ddev;
144
145 tidss->dev = dev;
146 tidss->feat = of_device_get_match_data(dev);
147
148 platform_set_drvdata(pdev, tidss);
149
150 ret = dispc_init(tidss);
151 if (ret) {
152 dev_err(dev, "failed to initialize dispc: %d\n", ret);
153 return ret;
154 }
155
156 pm_runtime_enable(dev);
157
158#ifndef CONFIG_PM
159
160 dispc_runtime_resume(tidss->dispc);
161#endif
162
163 ret = tidss_modeset_init(tidss);
164 if (ret < 0) {
165 if (ret != -EPROBE_DEFER)
166 dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
167 goto err_runtime_suspend;
168 }
169
170 irq = platform_get_irq(pdev, 0);
171 if (irq < 0) {
172 ret = irq;
173 goto err_runtime_suspend;
174 }
175
176 ret = drm_irq_install(ddev, irq);
177 if (ret) {
178 dev_err(dev, "drm_irq_install failed: %d\n", ret);
179 goto err_runtime_suspend;
180 }
181
182 drm_kms_helper_poll_init(ddev);
183
184 drm_mode_config_reset(ddev);
185
186 ret = drm_dev_register(ddev, 0);
187 if (ret) {
188 dev_err(dev, "failed to register DRM device\n");
189 goto err_irq_uninstall;
190 }
191
192 drm_fbdev_generic_setup(ddev, 32);
193
194 dev_dbg(dev, "%s done\n", __func__);
195
196 return 0;
197
198err_irq_uninstall:
199 drm_irq_uninstall(ddev);
200
201err_runtime_suspend:
202#ifndef CONFIG_PM
203 dispc_runtime_suspend(tidss->dispc);
204#endif
205 pm_runtime_disable(dev);
206
207 return ret;
208}
209
210static int 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 drm_irq_uninstall(ddev);
223
224#ifndef CONFIG_PM
225
226 dispc_runtime_suspend(tidss->dispc);
227#endif
228 pm_runtime_disable(dev);
229
230
231 dispc_remove(tidss);
232
233 dev_dbg(dev, "%s done\n", __func__);
234
235 return 0;
236}
237
238static void tidss_shutdown(struct platform_device *pdev)
239{
240 drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
241}
242
243static const struct of_device_id tidss_of_table[] = {
244 { .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
245 { .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
246 { .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
247 { }
248};
249
250MODULE_DEVICE_TABLE(of, tidss_of_table);
251
252static struct platform_driver tidss_platform_driver = {
253 .probe = tidss_probe,
254 .remove = tidss_remove,
255 .shutdown = tidss_shutdown,
256 .driver = {
257 .name = "tidss",
258#ifdef CONFIG_PM
259 .pm = &tidss_pm_ops,
260#endif
261 .of_match_table = tidss_of_table,
262 .suppress_bind_attrs = true,
263 },
264};
265
266module_platform_driver(tidss_platform_driver);
267
268MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
269MODULE_DESCRIPTION("TI Keystone DSS Driver");
270MODULE_LICENSE("GPL v2");
271
