/* * rcar_du_drv.c -- R-Car Display Unit DRM driver * * Copyright (C) 2013-2014 Renesas Electronics Corporation * * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "rcar_du_crtc.h" #include "rcar_du_drv.h" #include "rcar_du_kms.h" #include "rcar_du_regs.h" /* ----------------------------------------------------------------------------- * Device Information */ static const struct rcar_du_device_info rcar_du_r8a7779_info = { .features = 0, .num_crtcs = 2, .routes = { /* R8A7779 has two RGB outputs and one (currently unsupported) * TCON output. */ [RCAR_DU_OUTPUT_DPAD0] = { .possible_crtcs = BIT(0), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 0, }, [RCAR_DU_OUTPUT_DPAD1] = { .possible_crtcs = BIT(1) | BIT(0), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 1, }, }, .num_lvds = 0, }; static const struct rcar_du_device_info rcar_du_r8a7790_info = { .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES, .num_crtcs = 3, .routes = { /* R8A7790 has one RGB output, two LVDS outputs and one * (currently unsupported) TCON output. */ [RCAR_DU_OUTPUT_DPAD0] = { .possible_crtcs = BIT(2) | BIT(1) | BIT(0), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 0, }, [RCAR_DU_OUTPUT_LVDS0] = { .possible_crtcs = BIT(0), .encoder_type = DRM_MODE_ENCODER_LVDS, .port = 1, }, [RCAR_DU_OUTPUT_LVDS1] = { .possible_crtcs = BIT(2) | BIT(1), .encoder_type = DRM_MODE_ENCODER_LVDS, .port = 2, }, }, .num_lvds = 2, }; /* M2-W (r8a7791) and M2-N (r8a7793) are identical */ static const struct rcar_du_device_info rcar_du_r8a7791_info = { .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, .routes = { /* R8A779[13] has one RGB output, one LVDS output and one * (currently unsupported) TCON output. */ [RCAR_DU_OUTPUT_DPAD0] = { .possible_crtcs = BIT(1) | BIT(0), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 0, }, [RCAR_DU_OUTPUT_LVDS0] = { .possible_crtcs = BIT(0), .encoder_type = DRM_MODE_ENCODER_LVDS, .port = 1, }, }, .num_lvds = 1, }; static const struct rcar_du_device_info rcar_du_r8a7794_info = { .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, .routes = { /* R8A7794 has two RGB outputs and one (currently unsupported) * TCON output. */ [RCAR_DU_OUTPUT_DPAD0] = { .possible_crtcs = BIT(0), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 0, }, [RCAR_DU_OUTPUT_DPAD1] = { .possible_crtcs = BIT(1), .encoder_type = DRM_MODE_ENCODER_NONE, .port = 1, }, }, .num_lvds = 0, }; static const struct of_device_id rcar_du_of_table[] = { { .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info }, { .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info }, { .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info }, { .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info }, { .compatible = "renesas,du-r8a7794", .data = &rcar_du_r8a7794_info }, { } }; MODULE_DEVICE_TABLE(of, rcar_du_of_table); /* ----------------------------------------------------------------------------- * DRM operations */ static int rcar_du_unload(struct drm_device *dev) { struct rcar_du_device *rcdu = dev->dev_private; if (rcdu->fbdev) drm_fbdev_cma_fini(rcdu->fbdev); drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); drm_vblank_cleanup(dev); dev->irq_enabled = 0; dev->dev_private = NULL; return 0; } static int rcar_du_load(struct drm_device *dev, unsigned long flags) { struct platform_device *pdev = dev->platformdev; struct device_node *np = pdev->dev.of_node; struct rcar_du_device *rcdu; struct resource *mem; int ret; if (np == NULL) { dev_err(dev->dev, "no platform data\n"); return -ENODEV; } rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL); if (rcdu == NULL) { dev_err(dev->dev, "failed to allocate private data\n"); return -ENOMEM; } init_waitqueue_head(&rcdu->commit.wait); rcdu->dev = &pdev->dev; rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data; rcdu->ddev = dev; dev->dev_private = rcdu; /* I/O resources */ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(rcdu->mmio)) return PTR_ERR(rcdu->mmio); /* Initialize vertical blanking interrupts handling. Start with vblank * disabled for all CRTCs. */ ret = drm_vblank_init(dev, (1 << rcdu->info->num_crtcs) - 1); if (ret < 0) { dev_err(&pdev->dev, "failed to initialize vblank\n"); goto done; } /* DRM/KMS objects */ ret = rcar_du_modeset_init(rcdu); if (ret < 0) { dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret); goto done; } dev->irq_enabled = 1; platform_set_drvdata(pdev, rcdu); done: if (ret) rcar_du_unload(dev); return ret; } static void rcar_du_lastclose(struct drm_device *dev) { struct rcar_du_device *rcdu = dev->dev_private; drm_fbdev_cma_restore_mode(rcdu->fbdev); } static int rcar_du_enable_vblank(struct drm_device *dev, unsigned int pipe) { struct rcar_du_device *rcdu = dev->dev_private; rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], true); return 0; } static void rcar_du_disable_vblank(struct drm_device *dev, unsigned int pipe) { struct rcar_du_device *rcdu = dev->dev_private; rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], false); } static const struct file_operations rcar_du_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .poll = drm_poll, .read = drm_read, .llseek = no_llseek, .mmap = drm_gem_cma_mmap, }; static struct drm_driver rcar_du_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC, .load = rcar_du_load, .unload = rcar_du_unload, .lastclose = rcar_du_lastclose, .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = rcar_du_enable_vblank, .disable_vblank = rcar_du_disable_vblank, .gem_free_object = drm_gem_cma_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = drm_gem_prime_import, .gem_prime_export = drm_gem_prime_export, .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, .gem_prime_vmap = drm_gem_cma_prime_vmap, .gem_prime_vunmap = drm_gem_cma_prime_vunmap, .gem_prime_mmap = drm_gem_cma_prime_mmap, .dumb_create = rcar_du_dumb_create, .dumb_map_offset = drm_gem_cma_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, .fops = &rcar_du_fops, .name = "rcar-du", .desc = "Renesas R-Car Display Unit", .date = "20130110", .major = 1, .minor = 0, }; /* ----------------------------------------------------------------------------- * Power management */ #ifdef CONFIG_PM_SLEEP static int rcar_du_pm_suspend(struct device *dev) { struct rcar_du_device *rcdu = dev_get_drvdata(dev); drm_kms_helper_poll_disable(rcdu->ddev); /* TODO Suspend the CRTC */ return 0; } static int rcar_du_pm_resume(struct device *dev) { struct rcar_du_device *rcdu = dev_get_drvdata(dev); /* TODO Resume the CRTC */ drm_kms_helper_poll_enable(rcdu->ddev); return 0; } #endif static const struct dev_pm_ops rcar_du_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume) }; /* ----------------------------------------------------------------------------- * Platform driver */ static int rcar_du_probe(struct platform_device *pdev) { return drm_platform_init(&rcar_du_driver, pdev); } static int rcar_du_remove(struct platform_device *pdev) { struct rcar_du_device *rcdu = platform_get_drvdata(pdev); drm_put_dev(rcdu->ddev); return 0; } static struct platform_driver rcar_du_platform_driver = { .probe = rcar_du_probe, .remove = rcar_du_remove, .driver = { .name = "rcar-du", .pm = &rcar_du_pm_ops, .of_match_table = rcar_du_of_table, }, }; module_platform_driver(rcar_du_platform_driver); MODULE_AUTHOR("Laurent Pinchart "); MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver"); MODULE_LICENSE("GPL");