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_lastclose(struct drm_device
*dev
)
48 struct vc4_dev
*vc4
= to_vc4_dev(dev
);
51 drm_fbdev_cma_restore_mode(vc4
->fbdev
);
54 static const struct file_operations vc4_drm_fops
= {
57 .release
= drm_release
,
58 .unlocked_ioctl
= drm_ioctl
,
63 .compat_ioctl
= drm_compat_ioctl
,
65 .llseek
= noop_llseek
,
68 static const struct drm_ioctl_desc vc4_drm_ioctls
[] = {
69 DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL
, vc4_submit_cl_ioctl
, DRM_RENDER_ALLOW
),
70 DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO
, vc4_wait_seqno_ioctl
, DRM_RENDER_ALLOW
),
71 DRM_IOCTL_DEF_DRV(VC4_WAIT_BO
, vc4_wait_bo_ioctl
, DRM_RENDER_ALLOW
),
72 DRM_IOCTL_DEF_DRV(VC4_CREATE_BO
, vc4_create_bo_ioctl
, DRM_RENDER_ALLOW
),
73 DRM_IOCTL_DEF_DRV(VC4_MMAP_BO
, vc4_mmap_bo_ioctl
, DRM_RENDER_ALLOW
),
74 DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO
, vc4_create_shader_bo_ioctl
, DRM_RENDER_ALLOW
),
75 DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE
, vc4_get_hang_state_ioctl
,
79 static struct drm_driver vc4_drm_driver
= {
80 .driver_features
= (DRIVER_MODESET
|
86 .lastclose
= vc4_lastclose
,
87 .irq_handler
= vc4_irq
,
88 .irq_preinstall
= vc4_irq_preinstall
,
89 .irq_postinstall
= vc4_irq_postinstall
,
90 .irq_uninstall
= vc4_irq_uninstall
,
92 .enable_vblank
= vc4_enable_vblank
,
93 .disable_vblank
= vc4_disable_vblank
,
94 .get_vblank_counter
= drm_vblank_no_hw_counter
,
96 #if defined(CONFIG_DEBUG_FS)
97 .debugfs_init
= vc4_debugfs_init
,
98 .debugfs_cleanup
= vc4_debugfs_cleanup
,
101 .gem_create_object
= vc4_create_object
,
102 .gem_free_object
= vc4_free_object
,
103 .gem_vm_ops
= &drm_gem_cma_vm_ops
,
105 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
106 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
107 .gem_prime_import
= drm_gem_prime_import
,
108 .gem_prime_export
= vc4_prime_export
,
109 .gem_prime_get_sg_table
= drm_gem_cma_prime_get_sg_table
,
110 .gem_prime_import_sg_table
= drm_gem_cma_prime_import_sg_table
,
111 .gem_prime_vmap
= vc4_prime_vmap
,
112 .gem_prime_vunmap
= drm_gem_cma_prime_vunmap
,
113 .gem_prime_mmap
= vc4_prime_mmap
,
115 .dumb_create
= vc4_dumb_create
,
116 .dumb_map_offset
= drm_gem_cma_dumb_map_offset
,
117 .dumb_destroy
= drm_gem_dumb_destroy
,
119 .ioctls
= vc4_drm_ioctls
,
120 .num_ioctls
= ARRAY_SIZE(vc4_drm_ioctls
),
121 .fops
= &vc4_drm_fops
,
126 .major
= DRIVER_MAJOR
,
127 .minor
= DRIVER_MINOR
,
128 .patchlevel
= DRIVER_PATCHLEVEL
,
131 static int compare_dev(struct device
*dev
, void *data
)
136 static void vc4_match_add_drivers(struct device
*dev
,
137 struct component_match
**match
,
138 struct platform_driver
*const *drivers
,
143 for (i
= 0; i
< count
; i
++) {
144 struct device_driver
*drv
= &drivers
[i
]->driver
;
145 struct device
*p
= NULL
, *d
;
147 while ((d
= bus_find_device(&platform_bus_type
, p
, drv
,
148 (void *)platform_bus_type
.match
))) {
150 component_match_add(dev
, match
, compare_dev
, d
);
157 static void vc4_kick_out_firmware_fb(void)
159 struct apertures_struct
*ap
;
161 ap
= alloc_apertures(1);
165 /* Since VC4 is a UMA device, the simplefb node may have been
166 * located anywhere in memory.
168 ap
->ranges
[0].base
= 0;
169 ap
->ranges
[0].size
= ~0;
171 remove_conflicting_framebuffers(ap
, "vc4drmfb", false);
175 static int vc4_drm_bind(struct device
*dev
)
177 struct platform_device
*pdev
= to_platform_device(dev
);
178 struct drm_device
*drm
;
179 struct drm_connector
*connector
;
183 dev
->coherent_dma_mask
= DMA_BIT_MASK(32);
185 vc4
= devm_kzalloc(dev
, sizeof(*vc4
), GFP_KERNEL
);
189 drm
= drm_dev_alloc(&vc4_drm_driver
, dev
);
192 platform_set_drvdata(pdev
, drm
);
194 drm
->dev_private
= vc4
;
196 vc4_bo_cache_init(drm
);
198 drm_mode_config_init(drm
);
204 ret
= component_bind_all(dev
, drm
);
208 vc4_kick_out_firmware_fb();
210 ret
= drm_dev_register(drm
, 0);
214 /* Connector registration has to occur after DRM device
215 * registration, because it creates sysfs entries based on the
218 list_for_each_entry(connector
, &drm
->mode_config
.connector_list
, head
) {
219 ret
= drm_connector_register(connector
);
229 drm_dev_unregister(drm
);
231 component_unbind_all(dev
, drm
);
233 vc4_gem_destroy(drm
);
236 vc4_bo_cache_destroy(drm
);
240 static void vc4_drm_unbind(struct device
*dev
)
242 struct platform_device
*pdev
= to_platform_device(dev
);
243 struct drm_device
*drm
= platform_get_drvdata(pdev
);
244 struct vc4_dev
*vc4
= to_vc4_dev(drm
);
247 drm_fbdev_cma_fini(vc4
->fbdev
);
249 drm_mode_config_cleanup(drm
);
254 static const struct component_master_ops vc4_drm_ops
= {
255 .bind
= vc4_drm_bind
,
256 .unbind
= vc4_drm_unbind
,
259 static struct platform_driver
*const component_drivers
[] = {
267 static int vc4_platform_drm_probe(struct platform_device
*pdev
)
269 struct component_match
*match
= NULL
;
270 struct device
*dev
= &pdev
->dev
;
272 vc4_match_add_drivers(dev
, &match
,
273 component_drivers
, ARRAY_SIZE(component_drivers
));
275 return component_master_add_with_match(dev
, &vc4_drm_ops
, match
);
278 static int vc4_platform_drm_remove(struct platform_device
*pdev
)
280 component_master_del(&pdev
->dev
, &vc4_drm_ops
);
285 static const struct of_device_id vc4_of_match
[] = {
286 { .compatible
= "brcm,bcm2835-vc4", },
289 MODULE_DEVICE_TABLE(of
, vc4_of_match
);
291 static struct platform_driver vc4_platform_driver
= {
292 .probe
= vc4_platform_drm_probe
,
293 .remove
= vc4_platform_drm_remove
,
296 .of_match_table
= vc4_of_match
,
300 static int __init
vc4_drm_register(void)
304 for (i
= 0; i
< ARRAY_SIZE(component_drivers
); i
++) {
305 ret
= platform_driver_register(component_drivers
[i
]);
308 platform_driver_unregister(component_drivers
[i
]);
312 return platform_driver_register(&vc4_platform_driver
);
315 static void __exit
vc4_drm_unregister(void)
319 for (i
= ARRAY_SIZE(component_drivers
) - 1; i
>= 0; i
--)
320 platform_driver_unregister(component_drivers
[i
]);
322 platform_driver_unregister(&vc4_platform_driver
);
325 module_init(vc4_drm_register
);
326 module_exit(vc4_drm_unregister
);
328 MODULE_ALIAS("platform:vc4-drm");
329 MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
330 MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
331 MODULE_LICENSE("GPL v2");