linux_dsm_epyc7002/drivers/gpu/drm/arc/arcpgu_drv.c
Dave Airlie 3154b13371 Merge tag 'drm-misc-next-2017-08-16' of git://anongit.freedesktop.org/git/drm-misc into drm-next
UAPI Changes:
- vc4: Allow userspace to dictate rendering order in submit_cl ioctl (Eric)

Cross-subsystem Changes:
- vboxvideo: One of Cihangir's patches applies to vboxvideo which is maintained
	     in staging

Core Changes:
- atomic_legacy_backoff is officially killed (Daniel)
- Extract drm_device.h (Daniel)
- Unregister drm device on unplug (Daniel)
- Rename deprecated drm_*_(un)?reference functions to drm_*_{get|put} (Cihangir)

Driver Changes:
- vc4: Error/destroy path cleanups, log level demotion, edid leak (Eric)
- various: Make various drm_*_funcs structs const (Bhumika)
- tinydrm: add support for LEGO MINDSTORMS EV3 LCD (David)
- various: Second half of .dumb_{map_offset|destroy} defaults set (Noralf)

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Eric Anholt <eric@anholt.net>
Cc: Bhumika Goyal <bhumirks@gmail.com>
Cc: Cihangir Akturk <cakturk@gmail.com>
Cc: David Lechner <david@lechnology.com>
Cc: Noralf Trønnes <noralf@tronnes.org>

* tag 'drm-misc-next-2017-08-16' of git://anongit.freedesktop.org/git/drm-misc: (50 commits)
  drm/gem-cma-helper: Remove drm_gem_cma_dumb_map_offset()
  drm/virtio: Use the drm_driver.dumb_destroy default
  drm/bochs: Use the drm_driver.dumb_destroy default
  drm/mgag200: Use the drm_driver.dumb_destroy default
  drm/exynos: Use .dumb_map_offset and .dumb_destroy defaults
  drm/msm: Use the drm_driver.dumb_destroy default
  drm/ast: Use the drm_driver.dumb_destroy default
  drm/qxl: Use the drm_driver.dumb_destroy default
  drm/udl: Use the drm_driver.dumb_destroy default
  drm/cirrus: Use the drm_driver.dumb_destroy default
  drm/tegra: Use .dumb_map_offset and .dumb_destroy defaults
  drm/gma500: Use .dumb_map_offset and .dumb_destroy defaults
  drm/mxsfb: Use .dumb_map_offset and .dumb_destroy defaults
  drm/meson: Use .dumb_map_offset and .dumb_destroy defaults
  drm/kirin: Use .dumb_map_offset and .dumb_destroy defaults
  drm/vc4: Continue the switch to drm_*_put() helpers
  drm/vc4: Fix leak of HDMI EDID
  dma-buf: fix reservation_object_wait_timeout_rcu to wait correctly v2
  dma-buf: add reservation_object_copy_fences (v2)
  drm/tinydrm: add support for LEGO MINDSTORMS EV3 LCD
  ...
2017-08-17 07:33:41 +10:00

255 lines
6.3 KiB
C

/*
* ARC PGU DRM driver.
*
* Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/clk.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_atomic_helper.h>
#include <linux/of_reserved_mem.h>
#include "arcpgu.h"
#include "arcpgu_regs.h"
static void arcpgu_fb_output_poll_changed(struct drm_device *dev)
{
struct arcpgu_drm_private *arcpgu = dev->dev_private;
drm_fbdev_cma_hotplug_event(arcpgu->fbdev);
}
static const struct drm_mode_config_funcs arcpgu_drm_modecfg_funcs = {
.fb_create = drm_fb_cma_create,
.output_poll_changed = arcpgu_fb_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static void arcpgu_setup_mode_config(struct drm_device *drm)
{
drm_mode_config_init(drm);
drm->mode_config.min_width = 0;
drm->mode_config.min_height = 0;
drm->mode_config.max_width = 1920;
drm->mode_config.max_height = 1080;
drm->mode_config.funcs = &arcpgu_drm_modecfg_funcs;
}
DEFINE_DRM_GEM_CMA_FOPS(arcpgu_drm_ops);
static void arcpgu_lastclose(struct drm_device *drm)
{
struct arcpgu_drm_private *arcpgu = drm->dev_private;
drm_fbdev_cma_restore_mode(arcpgu->fbdev);
}
static int arcpgu_load(struct drm_device *drm)
{
struct platform_device *pdev = to_platform_device(drm->dev);
struct arcpgu_drm_private *arcpgu;
struct device_node *encoder_node;
struct resource *res;
int ret;
arcpgu = devm_kzalloc(&pdev->dev, sizeof(*arcpgu), GFP_KERNEL);
if (arcpgu == NULL)
return -ENOMEM;
drm->dev_private = arcpgu;
arcpgu->clk = devm_clk_get(drm->dev, "pxlclk");
if (IS_ERR(arcpgu->clk))
return PTR_ERR(arcpgu->clk);
arcpgu_setup_mode_config(drm);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
arcpgu->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(arcpgu->regs))
return PTR_ERR(arcpgu->regs);
dev_info(drm->dev, "arc_pgu ID: 0x%x\n",
arc_pgu_read(arcpgu, ARCPGU_REG_ID));
/* Get the optional framebuffer memory resource */
ret = of_reserved_mem_device_init(drm->dev);
if (ret && ret != -ENODEV)
return ret;
if (dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32)))
return -ENODEV;
if (arc_pgu_setup_crtc(drm) < 0)
return -ENODEV;
/* find the encoder node and initialize it */
encoder_node = of_parse_phandle(drm->dev->of_node, "encoder-slave", 0);
if (encoder_node) {
ret = arcpgu_drm_hdmi_init(drm, encoder_node);
of_node_put(encoder_node);
if (ret < 0)
return ret;
} else {
ret = arcpgu_drm_sim_init(drm, NULL);
if (ret < 0)
return ret;
}
drm_mode_config_reset(drm);
drm_kms_helper_poll_init(drm);
arcpgu->fbdev = drm_fbdev_cma_init(drm, 16,
drm->mode_config.num_connector);
if (IS_ERR(arcpgu->fbdev)) {
ret = PTR_ERR(arcpgu->fbdev);
arcpgu->fbdev = NULL;
return -ENODEV;
}
platform_set_drvdata(pdev, drm);
return 0;
}
static int arcpgu_unload(struct drm_device *drm)
{
struct arcpgu_drm_private *arcpgu = drm->dev_private;
if (arcpgu->fbdev) {
drm_fbdev_cma_fini(arcpgu->fbdev);
arcpgu->fbdev = NULL;
}
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
return 0;
}
#ifdef CONFIG_DEBUG_FS
static int arcpgu_show_pxlclock(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_device *drm = node->minor->dev;
struct arcpgu_drm_private *arcpgu = drm->dev_private;
unsigned long clkrate = clk_get_rate(arcpgu->clk);
unsigned long mode_clock = arcpgu->crtc.mode.crtc_clock * 1000;
seq_printf(m, "hw : %lu\n", clkrate);
seq_printf(m, "mode: %lu\n", mode_clock);
return 0;
}
static struct drm_info_list arcpgu_debugfs_list[] = {
{ "clocks", arcpgu_show_pxlclock, 0 },
{ "fb", drm_fb_cma_debugfs_show, 0 },
};
static int arcpgu_debugfs_init(struct drm_minor *minor)
{
return drm_debugfs_create_files(arcpgu_debugfs_list,
ARRAY_SIZE(arcpgu_debugfs_list), minor->debugfs_root, minor);
}
#endif
static struct drm_driver arcpgu_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
DRIVER_ATOMIC,
.lastclose = arcpgu_lastclose,
.name = "arcpgu",
.desc = "ARC PGU Controller",
.date = "20160219",
.major = 1,
.minor = 0,
.patchlevel = 0,
.fops = &arcpgu_drm_ops,
.dumb_create = drm_gem_cma_dumb_create,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_free_object_unlocked = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.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,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = arcpgu_debugfs_init,
#endif
};
static int arcpgu_probe(struct platform_device *pdev)
{
struct drm_device *drm;
int ret;
drm = drm_dev_alloc(&arcpgu_drm_driver, &pdev->dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
ret = arcpgu_load(drm);
if (ret)
goto err_unref;
ret = drm_dev_register(drm, 0);
if (ret)
goto err_unload;
return 0;
err_unload:
arcpgu_unload(drm);
err_unref:
drm_dev_unref(drm);
return ret;
}
static int arcpgu_remove(struct platform_device *pdev)
{
struct drm_device *drm = platform_get_drvdata(pdev);
drm_dev_unregister(drm);
arcpgu_unload(drm);
drm_dev_unref(drm);
return 0;
}
static const struct of_device_id arcpgu_of_table[] = {
{.compatible = "snps,arcpgu"},
{}
};
MODULE_DEVICE_TABLE(of, arcpgu_of_table);
static struct platform_driver arcpgu_platform_driver = {
.probe = arcpgu_probe,
.remove = arcpgu_remove,
.driver = {
.name = "arcpgu",
.of_match_table = arcpgu_of_table,
},
};
module_platform_driver(arcpgu_platform_driver);
MODULE_AUTHOR("Carlos Palminha <palminha@synopsys.com>");
MODULE_DESCRIPTION("ARC PGU DRM driver");
MODULE_LICENSE("GPL");