2 * rcar_du_drv.c -- R-Car Display Unit DRM driver
4 * Copyright (C) 2013 Renesas Corporation
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/clk.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
20 #include <linux/slab.h>
23 #include <drm/drm_crtc_helper.h>
24 #include <drm/drm_fb_cma_helper.h>
25 #include <drm/drm_gem_cma_helper.h>
27 #include "rcar_du_crtc.h"
28 #include "rcar_du_drv.h"
29 #include "rcar_du_kms.h"
30 #include "rcar_du_regs.h"
32 /* -----------------------------------------------------------------------------
36 static int rcar_du_unload(struct drm_device *dev)
38 struct rcar_du_device *rcdu = dev->dev_private;
41 drm_fbdev_cma_fini(rcdu->fbdev);
43 drm_kms_helper_poll_fini(dev);
44 drm_mode_config_cleanup(dev);
45 drm_vblank_cleanup(dev);
48 dev->dev_private = NULL;
53 static int rcar_du_load(struct drm_device *dev, unsigned long flags)
55 struct platform_device *pdev = dev->platformdev;
56 struct rcar_du_platform_data *pdata = pdev->dev.platform_data;
57 struct rcar_du_device *rcdu;
62 dev_err(dev->dev, "no platform data\n");
66 rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
68 dev_err(dev->dev, "failed to allocate private data\n");
72 rcdu->dev = &pdev->dev;
74 rcdu->info = (struct rcar_du_device_info *)pdev->id_entry->driver_data;
76 dev->dev_private = rcdu;
79 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
80 rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
81 if (IS_ERR(rcdu->mmio))
82 return PTR_ERR(rcdu->mmio);
85 ret = rcar_du_modeset_init(rcdu);
87 dev_err(&pdev->dev, "failed to initialize DRM/KMS\n");
92 ret = drm_vblank_init(dev, (1 << rcdu->num_crtcs) - 1);
94 dev_err(&pdev->dev, "failed to initialize vblank\n");
100 platform_set_drvdata(pdev, rcdu);
109 static void rcar_du_preclose(struct drm_device *dev, struct drm_file *file)
111 struct rcar_du_device *rcdu = dev->dev_private;
114 for (i = 0; i < rcdu->num_crtcs; ++i)
115 rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
118 static void rcar_du_lastclose(struct drm_device *dev)
120 struct rcar_du_device *rcdu = dev->dev_private;
122 drm_fbdev_cma_restore_mode(rcdu->fbdev);
125 static int rcar_du_enable_vblank(struct drm_device *dev, int crtc)
127 struct rcar_du_device *rcdu = dev->dev_private;
129 rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], true);
134 static void rcar_du_disable_vblank(struct drm_device *dev, int crtc)
136 struct rcar_du_device *rcdu = dev->dev_private;
138 rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], false);
141 static const struct file_operations rcar_du_fops = {
142 .owner = THIS_MODULE,
144 .release = drm_release,
145 .unlocked_ioctl = drm_ioctl,
147 .compat_ioctl = drm_compat_ioctl,
152 .mmap = drm_gem_cma_mmap,
155 static struct drm_driver rcar_du_driver = {
156 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME,
157 .load = rcar_du_load,
158 .unload = rcar_du_unload,
159 .preclose = rcar_du_preclose,
160 .lastclose = rcar_du_lastclose,
161 .get_vblank_counter = drm_vblank_count,
162 .enable_vblank = rcar_du_enable_vblank,
163 .disable_vblank = rcar_du_disable_vblank,
164 .gem_free_object = drm_gem_cma_free_object,
165 .gem_vm_ops = &drm_gem_cma_vm_ops,
166 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
167 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
168 .gem_prime_import = drm_gem_prime_import,
169 .gem_prime_export = drm_gem_prime_export,
170 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
171 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
172 .gem_prime_vmap = drm_gem_cma_prime_vmap,
173 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
174 .gem_prime_mmap = drm_gem_cma_prime_mmap,
175 .dumb_create = rcar_du_dumb_create,
176 .dumb_map_offset = drm_gem_cma_dumb_map_offset,
177 .dumb_destroy = drm_gem_dumb_destroy,
178 .fops = &rcar_du_fops,
180 .desc = "Renesas R-Car Display Unit",
186 /* -----------------------------------------------------------------------------
191 static int rcar_du_pm_suspend(struct device *dev)
193 struct rcar_du_device *rcdu = dev_get_drvdata(dev);
195 drm_kms_helper_poll_disable(rcdu->ddev);
196 /* TODO Suspend the CRTC */
201 static int rcar_du_pm_resume(struct device *dev)
203 struct rcar_du_device *rcdu = dev_get_drvdata(dev);
205 /* TODO Resume the CRTC */
207 drm_kms_helper_poll_enable(rcdu->ddev);
212 static const struct dev_pm_ops rcar_du_pm_ops = {
213 SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
216 /* -----------------------------------------------------------------------------
220 static int rcar_du_probe(struct platform_device *pdev)
222 return drm_platform_init(&rcar_du_driver, pdev);
225 static int rcar_du_remove(struct platform_device *pdev)
227 drm_platform_exit(&rcar_du_driver, pdev);
232 static const struct rcar_du_device_info rcar_du_r8a7779_info = {
236 /* R8A7779 has two RGB outputs and one (currently unsupported)
239 [RCAR_DU_OUTPUT_DPAD0] = {
240 .possible_crtcs = BIT(0),
241 .encoder_type = DRM_MODE_ENCODER_NONE,
243 [RCAR_DU_OUTPUT_DPAD1] = {
244 .possible_crtcs = BIT(1) | BIT(0),
245 .encoder_type = DRM_MODE_ENCODER_NONE,
251 static const struct rcar_du_device_info rcar_du_r8a7790_info = {
252 .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_ALIGN_128B
253 | RCAR_DU_FEATURE_DEFR8,
256 /* R8A7790 has one RGB output, two LVDS outputs and one
257 * (currently unsupported) TCON output.
259 [RCAR_DU_OUTPUT_DPAD0] = {
260 .possible_crtcs = BIT(2) | BIT(1) | BIT(0),
261 .encoder_type = DRM_MODE_ENCODER_NONE,
263 [RCAR_DU_OUTPUT_LVDS0] = {
264 .possible_crtcs = BIT(0),
265 .encoder_type = DRM_MODE_ENCODER_LVDS,
267 [RCAR_DU_OUTPUT_LVDS1] = {
268 .possible_crtcs = BIT(2) | BIT(1),
269 .encoder_type = DRM_MODE_ENCODER_LVDS,
275 static const struct platform_device_id rcar_du_id_table[] = {
276 { "rcar-du-r8a7779", (kernel_ulong_t)&rcar_du_r8a7779_info },
277 { "rcar-du-r8a7790", (kernel_ulong_t)&rcar_du_r8a7790_info },
281 MODULE_DEVICE_TABLE(platform, rcar_du_id_table);
283 static struct platform_driver rcar_du_platform_driver = {
284 .probe = rcar_du_probe,
285 .remove = rcar_du_remove,
287 .owner = THIS_MODULE,
289 .pm = &rcar_du_pm_ops,
291 .id_table = rcar_du_id_table,
294 module_platform_driver(rcar_du_platform_driver);
296 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
297 MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
298 MODULE_LICENSE("GPL");