drm/mxsfb/lcdif_drv.c

5  * This code is based on drivers/gpu/drm/mxsfb/mxsfb*
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_bridge.h>
19 #include <drm/drm_drv.h>
20 #include <drm/drm_encoder.h>
21 #include <drm/drm_fbdev_dma.h>
22 #include <drm/drm_gem_dma_helper.h>
23 #include <drm/drm_gem_framebuffer_helper.h>
24 #include <drm/drm_mode_config.h>
25 #include <drm/drm_module.h>
26 #include <drm/drm_of.h>
27 #include <drm/drm_probe_helper.h>
28 #include <drm/drm_vblank.h>
49 	struct device *dev = lcdif->drm->dev;
90 		ret = drm_encoder_init(lcdif->drm, encoder, &lcdif_encoder_funcs,
113 	struct drm_device *drm = data;
114 	struct lcdif_drm_private *lcdif = drm->dev_private;
132 static int lcdif_load(struct drm_device *drm)
134 	struct platform_device *pdev = to_platform_device(drm->dev);
143 	lcdif->drm = drm;
144 	drm->dev_private = lcdif;
147 	lcdif->base = devm_ioremap_resource(drm->dev, res);
151 	lcdif->clk = devm_clk_get(drm->dev, "pix");
155 	lcdif->clk_axi = devm_clk_get(drm->dev, "axi");
159 	lcdif->clk_disp_axi = devm_clk_get(drm->dev, "disp_axi");
163 	platform_set_drvdata(pdev, drm);
165 	ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(36));
170 	ret = drmm_mode_config_init(drm);
172 		dev_err(drm->dev, "Failed to initialize mode config\n");
178 		dev_err(drm->dev, "Failed to initialize KMS pipeline\n");
182 	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
184 		dev_err(drm->dev, "Failed to initialise vblank\n");
193 		return dev_err_probe(drm->dev, ret, "Cannot connect bridge\n");
195 	drm->mode_config.min_width	= LCDIF_MIN_XRES;
196 	drm->mode_config.min_height	= LCDIF_MIN_YRES;
197 	drm->mode_config.max_width	= LCDIF_MAX_XRES;
198 	drm->mode_config.max_height	= LCDIF_MAX_YRES;
199 	drm->mode_config.funcs		= &lcdif_mode_config_funcs;
200 	drm->mode_config.helper_private	= &lcdif_mode_config_helpers;
202 	drm_mode_config_reset(drm);
209 	ret = devm_request_irq(drm->dev, lcdif->irq, lcdif_irq_handler, 0,
210 			       drm->driver->name, drm);
212 		dev_err(drm->dev, "Failed to install IRQ handler\n");
216 	drm_kms_helper_poll_init(drm);
218 	drm_helper_hpd_irq_event(drm);
220 	pm_runtime_enable(drm->dev);
225 static void lcdif_unload(struct drm_device *drm)
227 	struct lcdif_drm_private *lcdif = drm->dev_private;
229 	pm_runtime_get_sync(drm->dev);
233 	drm_kms_helper_poll_fini(drm);
235 	pm_runtime_put_sync(drm->dev);
236 	pm_runtime_disable(drm->dev);
238 	drm->dev_private = NULL;
263 	struct drm_device *drm;
266 	drm = drm_dev_alloc(&lcdif_driver, &pdev->dev);
267 	if (IS_ERR(drm))
268 		return PTR_ERR(drm);
270 	ret = lcdif_load(drm);
274 	ret = drm_dev_register(drm, 0);
278 	drm_fbdev_dma_setup(drm, 32);
283 	lcdif_unload(drm);
285 	drm_dev_put(drm);
292 	struct drm_device *drm = platform_get_drvdata(pdev);
294 	drm_dev_unregister(drm);
295 	drm_atomic_helper_shutdown(drm);
296 	lcdif_unload(drm);
297 	drm_dev_put(drm);
302 	struct drm_device *drm = platform_get_drvdata(pdev);
304 	drm_atomic_helper_shutdown(drm);
309 	struct drm_device *drm = dev_get_drvdata(dev);
310 	struct lcdif_drm_private *lcdif = drm->dev_private;
324 	struct drm_device *drm = dev_get_drvdata(dev);
325 	struct lcdif_drm_private *lcdif = drm->dev_private;
339 	struct drm_device *drm = dev_get_drvdata(dev);
342 	ret = drm_mode_config_helper_suspend(drm);
351 	struct drm_device *drm = dev_get_drvdata(dev);
355 	return drm_mode_config_helper_resume(drm);