Release 4.7 drivers/gpu/drm/vc4/vc4_drv.c
/*
* Copyright (C) 2014-2015 Broadcom
* Copyright (C) 2013 Red Hat
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include "drm_fb_cma_helper.h"
#include "uapi/drm/vc4_drm.h"
#include "vc4_drv.h"
#include "vc4_regs.h"
#define DRIVER_NAME "vc4"
#define DRIVER_DESC "Broadcom VC4 graphics"
#define DRIVER_DATE "20140616"
#define DRIVER_MAJOR 0
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
/* Helper function for mapping the regs on a platform device. */
void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index)
{
struct resource *res;
void __iomem *map;
res = platform_get_resource(dev, IORESOURCE_MEM, index);
map = devm_ioremap_resource(&dev->dev, res);
if (IS_ERR(map)) {
DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map));
return map;
}
return map;
}
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static void vc4_lastclose(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
if (vc4->fbdev)
drm_fbdev_cma_restore_mode(vc4->fbdev);
}
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static const struct file_operations vc4_drm_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.mmap = vc4_mmap,
.poll = drm_poll,
.read = drm_read,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.llseek = noop_llseek,
};
static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl,
DRM_ROOT_ONLY),
};
static struct drm_driver vc4_drm_driver = {
.driver_features = (DRIVER_MODESET |
DRIVER_ATOMIC |
DRIVER_GEM |
DRIVER_HAVE_IRQ |
DRIVER_RENDER |
DRIVER_PRIME),
.lastclose = vc4_lastclose,
.irq_handler = vc4_irq,
.irq_preinstall = vc4_irq_preinstall,
.irq_postinstall = vc4_irq_postinstall,
.irq_uninstall = vc4_irq_uninstall,
.enable_vblank = vc4_enable_vblank,
.disable_vblank = vc4_disable_vblank,
.get_vblank_counter = drm_vblank_no_hw_counter,
#if defined(CONFIG_DEBUG_FS)
.debugfs_init = vc4_debugfs_init,
.debugfs_cleanup = vc4_debugfs_cleanup,
#endif
.gem_create_object = vc4_create_object,
.gem_free_object = vc4_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 = vc4_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 = vc4_prime_vmap,
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = vc4_prime_mmap,
.dumb_create = vc4_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
.dumb_destroy = drm_gem_dumb_destroy,
.ioctls = vc4_drm_ioctls,
.num_ioctls = ARRAY_SIZE(vc4_drm_ioctls),
.fops = &vc4_drm_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
};
static int compare_dev(struct device *dev, void *data)
{
return dev == data;
}
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static void vc4_match_add_drivers(struct device *dev,
struct component_match **match,
struct platform_driver *const *drivers,
int count)
{
int i;
for (i = 0; i < count; i++) {
struct device_driver *drv = &drivers[i]->driver;
struct device *p = NULL, *d;
while ((d = bus_find_device(&platform_bus_type, p, drv,
(void *)platform_bus_type.match))) {
put_device(p);
component_match_add(dev, match, compare_dev, d);
p = d;
}
put_device(p);
}
}
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static void vc4_kick_out_firmware_fb(void)
{
struct apertures_struct *ap;
ap = alloc_apertures(1);
if (!ap)
return;
/* Since VC4 is a UMA device, the simplefb node may have been
* located anywhere in memory.
*/
ap->ranges[0].base = 0;
ap->ranges[0].size = ~0;
remove_conflicting_framebuffers(ap, "vc4drmfb", false);
kfree(ap);
}
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static int vc4_drm_bind(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm;
struct drm_connector *connector;
struct vc4_dev *vc4;
int ret = 0;
dev->coherent_dma_mask = DMA_BIT_MASK(32);
vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL);
if (!vc4)
return -ENOMEM;
drm = drm_dev_alloc(&vc4_drm_driver, dev);
if (!drm)
return -ENOMEM;
platform_set_drvdata(pdev, drm);
vc4->dev = drm;
drm->dev_private = vc4;
vc4_bo_cache_init(drm);
drm_mode_config_init(drm);
if (ret)
goto unref;
vc4_gem_init(drm);
ret = component_bind_all(dev, drm);
if (ret)
goto gem_destroy;
vc4_kick_out_firmware_fb();
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unbind_all;
/* Connector registration has to occur after DRM device
* registration, because it creates sysfs entries based on the
* DRM device.
*/
list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
ret = drm_connector_register(connector);
if (ret)
goto unregister;
}
vc4_kms_load(drm);
return 0;
unregister:
drm_dev_unregister(drm);
unbind_all:
component_unbind_all(dev, drm);
gem_destroy:
vc4_gem_destroy(drm);
unref:
drm_dev_unref(drm);
vc4_bo_cache_destroy(drm);
return ret;
}
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static void vc4_drm_unbind(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = platform_get_drvdata(pdev);
struct vc4_dev *vc4 = to_vc4_dev(drm);
if (vc4->fbdev)
drm_fbdev_cma_fini(vc4->fbdev);
drm_mode_config_cleanup(drm);
drm_put_dev(drm);
}
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static const struct component_master_ops vc4_drm_ops = {
.bind = vc4_drm_bind,
.unbind = vc4_drm_unbind,
};
static struct platform_driver *const component_drivers[] = {
&vc4_hdmi_driver,
&vc4_dpi_driver,
&vc4_crtc_driver,
&vc4_hvs_driver,
&vc4_v3d_driver,
};
static int vc4_platform_drm_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
struct device *dev = &pdev->dev;
vc4_match_add_drivers(dev, &match,
component_drivers, ARRAY_SIZE(component_drivers));
return component_master_add_with_match(dev, &vc4_drm_ops, match);
}
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static int vc4_platform_drm_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &vc4_drm_ops);
return 0;
}
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static const struct of_device_id vc4_of_match[] = {
{ .compatible = "brcm,bcm2835-vc4", },
{},
};
MODULE_DEVICE_TABLE(of, vc4_of_match);
static struct platform_driver vc4_platform_driver = {
.probe = vc4_platform_drm_probe,
.remove = vc4_platform_drm_remove,
.driver = {
.name = "vc4-drm",
.of_match_table = vc4_of_match,
},
};
static int __init vc4_drm_register(void)
{
int i, ret;
for (i = 0; i < ARRAY_SIZE(component_drivers); i++) {
ret = platform_driver_register(component_drivers[i]);
if (ret) {
while (--i >= 0)
platform_driver_unregister(component_drivers[i]);
return ret;
}
}
return platform_driver_register(&vc4_platform_driver);
}
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| eric anholt | eric anholt | 73 | 100.00% | 1 | 100.00% |
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static void __exit vc4_drm_unregister(void)
{
int i;
for (i = ARRAY_SIZE(component_drivers) - 1; i >= 0; i--)
platform_driver_unregister(component_drivers[i]);
platform_driver_unregister(&vc4_platform_driver);
}
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module_init(vc4_drm_register);
module_exit(vc4_drm_unregister);
MODULE_ALIAS("platform:vc4-drm");
MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
MODULE_LICENSE("GPL v2");
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| herve jourdain | herve jourdain | 6 | 0.45% | 1 | 7.69% |
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| Total | 1338 | 100.00% | 13 | 100.00% |
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