16 #include <drm/clients/drm_client_setup.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_drv.h>
19 #include <drm/drm_fbdev_dma.h>
20 #include <drm/drm_gem_dma_helper.h>
21 #include <drm/drm_gem_framebuffer_helper.h>
22 #include <drm/drm_module.h>
23 #include <drm/drm_probe_helper.h>
24 #include <drm/drm_vblank.h>
36 		drm_err(&kmb->drm, "Failed to enable LCD clock: %d\n", ret);  in kmb_display_clk_enable()
50 		drm_err(&kmb->drm, "clk_get() failed clk_lcd\n");  in kmb_initialize_clocks()
56 		drm_err(&kmb->drm, "clk_get() failed clk_pll0 ");  in kmb_initialize_clocks()
60 	drm_info(&kmb->drm, "system clk = %d Mhz", kmb->sys_clk_mhz);  in kmb_initialize_clocks()
67 		drm_err(&kmb->drm, "failed to set to clk_lcd to %d\n",  in kmb_initialize_clocks()
71 	drm_dbg(&kmb->drm, "clk_lcd = %ld\n", clk_get_rate(kmb->kmb_clk.clk_lcd));  in kmb_initialize_clocks()
79 		drm_err(&kmb->drm, "failed to get msscam syscon");  in kmb_initialize_clocks()
94 static void __iomem *kmb_map_mmio(struct drm_device *drm,  in kmb_map_mmio()  argument
103 		drm_err(drm, "failed to get resource for %s", name);  in kmb_map_mmio()
106 	mem = devm_ioremap_resource(drm->dev, res);  in kmb_map_mmio()
108 		drm_err(drm, "failed to ioremap %s registers", name);  in kmb_map_mmio()
112 static int kmb_hw_init(struct drm_device *drm, unsigned long flags)  in kmb_hw_init()  argument
114 	struct kmb_drm_private *kmb = to_kmb(drm);  in kmb_hw_init()
115 	struct platform_device *pdev = to_platform_device(drm->dev);  in kmb_hw_init()
120 	kmb->lcd_mmio = kmb_map_mmio(drm, pdev, "lcd");  in kmb_hw_init()
122 		drm_err(&kmb->drm, "failed to map LCD registers\n");  in kmb_hw_init()
143 		drm_err(&kmb->drm, "irq_lcd not found");  in kmb_hw_init()
148 	ret = of_reserved_mem_device_init(drm->dev);  in kmb_hw_init()
159 	of_reserved_mem_device_release(drm->dev);  in kmb_hw_init()
170 static int kmb_setup_mode_config(struct drm_device *drm)  in kmb_setup_mode_config()  argument
173 	struct kmb_drm_private *kmb = to_kmb(drm);  in kmb_setup_mode_config()
175 	ret = drmm_mode_config_init(drm);  in kmb_setup_mode_config()
178 	drm->mode_config.min_width = KMB_FB_MIN_WIDTH;  in kmb_setup_mode_config()
179 	drm->mode_config.min_height = KMB_FB_MIN_HEIGHT;  in kmb_setup_mode_config()
180 	drm->mode_config.max_width = KMB_FB_MAX_WIDTH;  in kmb_setup_mode_config()
181 	drm->mode_config.max_height = KMB_FB_MAX_HEIGHT;  in kmb_setup_mode_config()
182 	drm->mode_config.preferred_depth = 24;  in kmb_setup_mode_config()
183 	drm->mode_config.funcs = &kmb_mode_config_funcs;  in kmb_setup_mode_config()
185 	ret = kmb_setup_crtc(drm);  in kmb_setup_mode_config()
187 		drm_err(drm, "failed to create crtc\n");  in kmb_setup_mode_config()
190 	ret = kmb_dsi_encoder_init(drm, kmb->kmb_dsi);  in kmb_setup_mode_config()
192 	kmb->crtc.port = of_graph_get_port_by_id(drm->dev->of_node, 0);  in kmb_setup_mode_config()
193 	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);  in kmb_setup_mode_config()
195 		drm_err(drm, "failed to initialize vblank\n");  in kmb_setup_mode_config()
196 		pm_runtime_disable(drm->dev);  in kmb_setup_mode_config()
200 	drm_mode_config_reset(drm);  in kmb_setup_mode_config()
312 			drm_info(&kmb->drm,  in handle_lcd_irq()
332 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
335 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
338 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
346 			drm_info(&kmb->drm,  in handle_lcd_irq()
366 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
369 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
372 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
377 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
380 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
385 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
388 			drm_dbg(&kmb->drm,  in handle_lcd_irq()
413 static void kmb_irq_reset(struct drm_device *drm)  in kmb_irq_reset()  argument
415 	kmb_write_lcd(to_kmb(drm), LCD_INT_CLEAR, 0xFFFF);  in kmb_irq_reset()
416 	kmb_write_lcd(to_kmb(drm), LCD_INT_ENABLE, 0);  in kmb_irq_reset()
419 static int kmb_irq_install(struct drm_device *drm, unsigned int irq)  in kmb_irq_install()  argument
424 	kmb_irq_reset(drm);  in kmb_irq_install()
426 	return request_irq(irq, kmb_isr, 0, drm->driver->name, drm);  in kmb_irq_install()
429 static void kmb_irq_uninstall(struct drm_device *drm)  in kmb_irq_uninstall()  argument
431 	struct kmb_drm_private *kmb = to_kmb(drm);  in kmb_irq_uninstall()
433 	kmb_irq_reset(drm);  in kmb_irq_uninstall()
434 	free_irq(kmb->irq_lcd, drm);  in kmb_irq_uninstall()
446 	.name = "kmb-drm",
455 	struct drm_device *drm = dev_get_drvdata(dev);  in kmb_remove()  local
456 	struct kmb_drm_private *kmb = to_kmb(drm);  in kmb_remove()
458 	drm_dev_unregister(drm);  in kmb_remove()
459 	drm_kms_helper_poll_fini(drm);  in kmb_remove()
462 	pm_runtime_get_sync(drm->dev);  in kmb_remove()
463 	kmb_irq_uninstall(drm);  in kmb_remove()
464 	pm_runtime_put_sync(drm->dev);  in kmb_remove()
465 	pm_runtime_disable(drm->dev);  in kmb_remove()
467 	of_reserved_mem_device_release(drm->dev);  in kmb_remove()
476 	drm_atomic_helper_shutdown(drm);  in kmb_remove()
526 	/* Create DRM device */  in kmb_probe()
528 				 struct kmb_drm_private, drm);  in kmb_probe()
532 	dev_set_drvdata(dev, &kmb->drm);  in kmb_probe()
537 		drm_err(&kmb->drm, "failed to initialize DSI\n");  in kmb_probe()
544 	ret = kmb_hw_init(&kmb->drm, 0);  in kmb_probe()
548 	ret = kmb_setup_mode_config(&kmb->drm);  in kmb_probe()
552 	ret = kmb_irq_install(&kmb->drm, kmb->irq_lcd);  in kmb_probe()
554 		drm_err(&kmb->drm, "failed to install IRQ handler\n");  in kmb_probe()
558 	drm_kms_helper_poll_init(&kmb->drm);  in kmb_probe()
561 	ret = drm_dev_register(&kmb->drm, 0);  in kmb_probe()
565 	drm_client_setup(&kmb->drm, NULL);  in kmb_probe()
570 	drm_kms_helper_poll_fini(&kmb->drm);  in kmb_probe()
572 	pm_runtime_disable(kmb->drm.dev);  in kmb_probe()
575 	drm_mode_config_cleanup(&kmb->drm);  in kmb_probe()
592 	struct drm_device *drm = dev_get_drvdata(dev);  in kmb_pm_suspend()  local
593 	struct kmb_drm_private *kmb = to_kmb(drm);  in kmb_pm_suspend()
595 	drm_kms_helper_poll_disable(drm);  in kmb_pm_suspend()
597 	kmb->state = drm_atomic_helper_suspend(drm);  in kmb_pm_suspend()
599 		drm_kms_helper_poll_enable(drm);  in kmb_pm_suspend()
608 	struct drm_device *drm = dev_get_drvdata(dev);  in kmb_pm_resume()  local
609 	struct kmb_drm_private *kmb = drm ? to_kmb(drm) : NULL;  in kmb_pm_resume()
614 	drm_atomic_helper_resume(drm, kmb->state);  in kmb_pm_resume()
615 	drm_kms_helper_poll_enable(drm);  in kmb_pm_resume()
626 		.name = "kmb-drm",