2 * Copyright (C) 2014-2015 Broadcom
3 * Copyright (C) 2013 Red Hat
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #include <linux/clk.h>
11 #include <linux/component.h>
12 #include <linux/device.h>
14 #include <linux/module.h>
15 #include <linux/of_platform.h>
16 #include <linux/platform_device.h>
17 #include "drm_fb_cma_helper.h"
19 #include "uapi/drm/vc4_drm.h"
23 #define DRIVER_NAME "vc4"
24 #define DRIVER_DESC "Broadcom VC4 graphics"
25 #define DRIVER_DATE "20140616"
26 #define DRIVER_MAJOR 0
27 #define DRIVER_MINOR 0
28 #define DRIVER_PATCHLEVEL 0
30 /* Helper function for mapping the regs on a platform device. */
31 void __iomem
*vc4_ioremap_regs(struct platform_device
*dev
, int index
)
36 res
= platform_get_resource(dev
, IORESOURCE_MEM
, index
);
37 map
= devm_ioremap_resource(&dev
->dev
, res
);
39 DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map
));
46 static void vc4_drm_preclose(struct drm_device
*dev
, struct drm_file
*file
)
48 struct drm_crtc
*crtc
;
50 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
51 vc4_cancel_page_flip(crtc
, file
);
54 static void vc4_lastclose(struct drm_device
*dev
)
56 struct vc4_dev
*vc4
= to_vc4_dev(dev
);
59 drm_fbdev_cma_restore_mode(vc4
->fbdev
);
62 static const struct file_operations vc4_drm_fops
= {
65 .release
= drm_release
,
66 .unlocked_ioctl
= drm_ioctl
,
71 .compat_ioctl
= drm_compat_ioctl
,
73 .llseek
= noop_llseek
,
76 static const struct drm_ioctl_desc vc4_drm_ioctls
[] = {
77 DRM_IOCTL_DEF_DRV(VC4_CREATE_BO
, vc4_create_bo_ioctl
, 0),
78 DRM_IOCTL_DEF_DRV(VC4_MMAP_BO
, vc4_mmap_bo_ioctl
, 0),
79 DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO
, vc4_create_shader_bo_ioctl
, 0),
82 static struct drm_driver vc4_drm_driver
= {
83 .driver_features
= (DRIVER_MODESET
|
87 .lastclose
= vc4_lastclose
,
88 .preclose
= vc4_drm_preclose
,
90 .enable_vblank
= vc4_enable_vblank
,
91 .disable_vblank
= vc4_disable_vblank
,
92 .get_vblank_counter
= drm_vblank_count
,
94 #if defined(CONFIG_DEBUG_FS)
95 .debugfs_init
= vc4_debugfs_init
,
96 .debugfs_cleanup
= vc4_debugfs_cleanup
,
99 .gem_create_object
= vc4_create_object
,
100 .gem_free_object
= vc4_free_object
,
101 .gem_vm_ops
= &drm_gem_cma_vm_ops
,
103 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
104 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
105 .gem_prime_import
= drm_gem_prime_import
,
106 .gem_prime_export
= vc4_prime_export
,
107 .gem_prime_get_sg_table
= drm_gem_cma_prime_get_sg_table
,
108 .gem_prime_import_sg_table
= drm_gem_cma_prime_import_sg_table
,
109 .gem_prime_vmap
= vc4_prime_vmap
,
110 .gem_prime_vunmap
= drm_gem_cma_prime_vunmap
,
111 .gem_prime_mmap
= vc4_prime_mmap
,
113 .dumb_create
= vc4_dumb_create
,
114 .dumb_map_offset
= drm_gem_cma_dumb_map_offset
,
115 .dumb_destroy
= drm_gem_dumb_destroy
,
117 .ioctls
= vc4_drm_ioctls
,
118 .num_ioctls
= ARRAY_SIZE(vc4_drm_ioctls
),
119 .fops
= &vc4_drm_fops
,
124 .major
= DRIVER_MAJOR
,
125 .minor
= DRIVER_MINOR
,
126 .patchlevel
= DRIVER_PATCHLEVEL
,
129 static int compare_dev(struct device
*dev
, void *data
)
134 static void vc4_match_add_drivers(struct device
*dev
,
135 struct component_match
**match
,
136 struct platform_driver
*const *drivers
,
141 for (i
= 0; i
< count
; i
++) {
142 struct device_driver
*drv
= &drivers
[i
]->driver
;
143 struct device
*p
= NULL
, *d
;
145 while ((d
= bus_find_device(&platform_bus_type
, p
, drv
,
146 (void *)platform_bus_type
.match
))) {
148 component_match_add(dev
, match
, compare_dev
, d
);
155 static int vc4_drm_bind(struct device
*dev
)
157 struct platform_device
*pdev
= to_platform_device(dev
);
158 struct drm_device
*drm
;
159 struct drm_connector
*connector
;
163 dev
->coherent_dma_mask
= DMA_BIT_MASK(32);
165 vc4
= devm_kzalloc(dev
, sizeof(*vc4
), GFP_KERNEL
);
169 drm
= drm_dev_alloc(&vc4_drm_driver
, dev
);
172 platform_set_drvdata(pdev
, drm
);
174 drm
->dev_private
= vc4
;
176 drm_dev_set_unique(drm
, dev_name(dev
));
178 vc4_bo_cache_init(drm
);
180 drm_mode_config_init(drm
);
184 ret
= component_bind_all(dev
, drm
);
188 ret
= drm_dev_register(drm
, 0);
192 /* Connector registration has to occur after DRM device
193 * registration, because it creates sysfs entries based on the
196 list_for_each_entry(connector
, &drm
->mode_config
.connector_list
, head
) {
197 ret
= drm_connector_register(connector
);
207 drm_dev_unregister(drm
);
209 component_unbind_all(dev
, drm
);
212 vc4_bo_cache_destroy(drm
);
216 static void vc4_drm_unbind(struct device
*dev
)
218 struct platform_device
*pdev
= to_platform_device(dev
);
219 struct drm_device
*drm
= platform_get_drvdata(pdev
);
220 struct vc4_dev
*vc4
= to_vc4_dev(drm
);
223 drm_fbdev_cma_fini(vc4
->fbdev
);
225 drm_mode_config_cleanup(drm
);
230 static const struct component_master_ops vc4_drm_ops
= {
231 .bind
= vc4_drm_bind
,
232 .unbind
= vc4_drm_unbind
,
235 static struct platform_driver
*const component_drivers
[] = {
242 static int vc4_platform_drm_probe(struct platform_device
*pdev
)
244 struct component_match
*match
= NULL
;
245 struct device
*dev
= &pdev
->dev
;
247 vc4_match_add_drivers(dev
, &match
,
248 component_drivers
, ARRAY_SIZE(component_drivers
));
250 return component_master_add_with_match(dev
, &vc4_drm_ops
, match
);
253 static int vc4_platform_drm_remove(struct platform_device
*pdev
)
255 component_master_del(&pdev
->dev
, &vc4_drm_ops
);
260 static const struct of_device_id vc4_of_match
[] = {
261 { .compatible
= "brcm,bcm2835-vc4", },
264 MODULE_DEVICE_TABLE(of
, vc4_of_match
);
266 static struct platform_driver vc4_platform_driver
= {
267 .probe
= vc4_platform_drm_probe
,
268 .remove
= vc4_platform_drm_remove
,
271 .owner
= THIS_MODULE
,
272 .of_match_table
= vc4_of_match
,
276 static int __init
vc4_drm_register(void)
280 for (i
= 0; i
< ARRAY_SIZE(component_drivers
); i
++) {
281 ret
= platform_driver_register(component_drivers
[i
]);
284 platform_driver_unregister(component_drivers
[i
]);
288 return platform_driver_register(&vc4_platform_driver
);
291 static void __exit
vc4_drm_unregister(void)
295 for (i
= ARRAY_SIZE(component_drivers
) - 1; i
>= 0; i
--)
296 platform_driver_unregister(component_drivers
[i
]);
298 platform_driver_unregister(&vc4_platform_driver
);
301 module_init(vc4_drm_register
);
302 module_exit(vc4_drm_unregister
);
304 MODULE_ALIAS("platform:vc4-drm");
305 MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
306 MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
307 MODULE_LICENSE("GPL v2");