1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
296f60e37SRussell King /*
396f60e37SRussell King * Copyright (C) 2012 Russell King
496f60e37SRussell King */
525e28ef2SSam Ravnborg
696f60e37SRussell King #include <linux/clk.h>
70101fd00SRussell King #include <linux/component.h>
896f60e37SRussell King #include <linux/module.h>
91c9da7dbSThomas Zimmermann #include <linux/of.h>
100101fd00SRussell King #include <linux/of_graph.h>
1125e28ef2SSam Ravnborg #include <linux/platform_device.h>
1225e28ef2SSam Ravnborg
136848c291SThomas Zimmermann #include <drm/drm_aperture.h>
146bd02908SRussell King #include <drm/drm_atomic_helper.h>
1525e28ef2SSam Ravnborg #include <drm/drm_drv.h>
1625e28ef2SSam Ravnborg #include <drm/drm_ioctl.h>
17780e41edSDaniel Vetter #include <drm/drm_managed.h>
1825e28ef2SSam Ravnborg #include <drm/drm_prime.h>
19fcd70cd3SDaniel Vetter #include <drm/drm_probe_helper.h>
207fc7e86dSLiviu Dudau #include <drm/drm_of.h>
2125e28ef2SSam Ravnborg #include <drm/drm_vblank.h>
2225e28ef2SSam Ravnborg
2396f60e37SRussell King #include "armada_crtc.h"
2496f60e37SRussell King #include "armada_drm.h"
2596f60e37SRussell King #include "armada_gem.h"
263382a6b9SRussell King #include "armada_fb.h"
2796f60e37SRussell King #include "armada_hw.h"
2896f60e37SRussell King #include <drm/armada_drm.h>
2996f60e37SRussell King #include "armada_ioctlP.h"
3096f60e37SRussell King
3170a59dd8SDaniel Vetter static const struct drm_ioctl_desc armada_ioctls[] = {
32f8c47144SDaniel Vetter DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0),
33f8c47144SDaniel Vetter DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0),
34f8c47144SDaniel Vetter DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0),
3596f60e37SRussell King };
3696f60e37SRussell King
37f42e1819SDaniel Vetter DEFINE_DRM_GEM_FOPS(armada_drm_fops);
3896f60e37SRussell King
3970a59dd8SDaniel Vetter static const struct drm_driver armada_drm_driver = {
4096f60e37SRussell King .gem_prime_import = armada_gem_prime_import,
4196f60e37SRussell King .dumb_create = armada_gem_dumb_create,
4296f60e37SRussell King .major = 1,
4396f60e37SRussell King .minor = 0,
4496f60e37SRussell King .name = "armada-drm",
4596f60e37SRussell King .desc = "Armada SoC DRM",
4696f60e37SRussell King .date = "20120730",
470424fdafSDaniel Vetter .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
4896f60e37SRussell King .ioctls = armada_ioctls,
4970a59dd8SDaniel Vetter .num_ioctls = ARRAY_SIZE(armada_ioctls),
5096f60e37SRussell King .fops = &armada_drm_fops,
5196f60e37SRussell King };
5296f60e37SRussell King
533382a6b9SRussell King static const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
543382a6b9SRussell King .fb_create = armada_fb_create,
556bd02908SRussell King .atomic_check = drm_atomic_helper_check,
566bd02908SRussell King .atomic_commit = drm_atomic_helper_commit,
573382a6b9SRussell King };
583382a6b9SRussell King
armada_drm_bind(struct device * dev)590101fd00SRussell King static int armada_drm_bind(struct device *dev)
600101fd00SRussell King {
61917a3cbeSRussell King struct armada_private *priv;
62917a3cbeSRussell King struct resource *mem = NULL;
63917a3cbeSRussell King int ret, n;
64917a3cbeSRussell King
65917a3cbeSRussell King for (n = 0; ; n++) {
66917a3cbeSRussell King struct resource *r = platform_get_resource(to_platform_device(dev),
67917a3cbeSRussell King IORESOURCE_MEM, n);
68917a3cbeSRussell King if (!r)
69917a3cbeSRussell King break;
70917a3cbeSRussell King
71917a3cbeSRussell King /* Resources above 64K are graphics memory */
72917a3cbeSRussell King if (resource_size(r) > SZ_64K)
73917a3cbeSRussell King mem = r;
74917a3cbeSRussell King else
75917a3cbeSRussell King return -EINVAL;
76917a3cbeSRussell King }
77917a3cbeSRussell King
78917a3cbeSRussell King if (!mem)
79917a3cbeSRussell King return -ENXIO;
80917a3cbeSRussell King
81917a3cbeSRussell King if (!devm_request_mem_region(dev, mem->start, resource_size(mem),
82917a3cbeSRussell King "armada-drm"))
83917a3cbeSRussell King return -EBUSY;
84917a3cbeSRussell King
8590ad200bSDaniel Vetter priv = devm_drm_dev_alloc(dev, &armada_drm_driver,
8690ad200bSDaniel Vetter struct armada_private, drm);
8790ad200bSDaniel Vetter if (IS_ERR(priv)) {
8890ad200bSDaniel Vetter dev_err(dev, "[" DRM_NAME ":%s] devm_drm_dev_alloc failed: %li\n",
8990ad200bSDaniel Vetter __func__, PTR_ERR(priv));
9090ad200bSDaniel Vetter return PTR_ERR(priv);
91917a3cbeSRussell King }
92917a3cbeSRussell King
93f54a5990SLubomir Rintel /* Remove early framebuffers */
9462aeaeaaSDaniel Vetter ret = drm_aperture_remove_framebuffers(&armada_drm_driver);
95f54a5990SLubomir Rintel if (ret) {
96f54a5990SLubomir Rintel dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
97f54a5990SLubomir Rintel __func__, ret);
98f54a5990SLubomir Rintel return ret;
99f54a5990SLubomir Rintel }
100f54a5990SLubomir Rintel
10176adb460SLaurent Pinchart dev_set_drvdata(dev, &priv->drm);
102917a3cbeSRussell King
103917a3cbeSRussell King /* Mode setting support */
104917a3cbeSRussell King drm_mode_config_init(&priv->drm);
105917a3cbeSRussell King priv->drm.mode_config.min_width = 320;
106917a3cbeSRussell King priv->drm.mode_config.min_height = 200;
107917a3cbeSRussell King
108917a3cbeSRussell King /*
109917a3cbeSRussell King * With vscale enabled, the maximum width is 1920 due to the
110917a3cbeSRussell King * 1920 by 3 lines RAM
111917a3cbeSRussell King */
112917a3cbeSRussell King priv->drm.mode_config.max_width = 1920;
113917a3cbeSRussell King priv->drm.mode_config.max_height = 2048;
114917a3cbeSRussell King
115917a3cbeSRussell King priv->drm.mode_config.preferred_depth = 24;
116917a3cbeSRussell King priv->drm.mode_config.funcs = &armada_drm_mode_config_funcs;
117917a3cbeSRussell King drm_mm_init(&priv->linear, mem->start, resource_size(mem));
118917a3cbeSRussell King mutex_init(&priv->linear_lock);
119917a3cbeSRussell King
120917a3cbeSRussell King ret = component_bind_all(dev, &priv->drm);
121917a3cbeSRussell King if (ret)
122917a3cbeSRussell King goto err_kms;
123917a3cbeSRussell King
124917a3cbeSRussell King ret = drm_vblank_init(&priv->drm, priv->drm.mode_config.num_crtc);
125917a3cbeSRussell King if (ret)
126917a3cbeSRussell King goto err_comp;
127917a3cbeSRussell King
12880c63aeeSRussell King drm_mode_config_reset(&priv->drm);
12980c63aeeSRussell King
130917a3cbeSRussell King drm_kms_helper_poll_init(&priv->drm);
131917a3cbeSRussell King
132917a3cbeSRussell King ret = drm_dev_register(&priv->drm, 0);
133917a3cbeSRussell King if (ret)
134917a3cbeSRussell King goto err_poll;
135917a3cbeSRussell King
136917a3cbeSRussell King #ifdef CONFIG_DEBUG_FS
137917a3cbeSRussell King armada_drm_debugfs_init(priv->drm.primary);
138917a3cbeSRussell King #endif
139917a3cbeSRussell King
140*63c38155SThomas Zimmermann armada_fbdev_setup(&priv->drm);
141*63c38155SThomas Zimmermann
142917a3cbeSRussell King return 0;
143917a3cbeSRussell King
144917a3cbeSRussell King err_poll:
145917a3cbeSRussell King drm_kms_helper_poll_fini(&priv->drm);
146917a3cbeSRussell King err_comp:
147917a3cbeSRussell King component_unbind_all(dev, &priv->drm);
148917a3cbeSRussell King err_kms:
149917a3cbeSRussell King drm_mode_config_cleanup(&priv->drm);
150917a3cbeSRussell King drm_mm_takedown(&priv->linear);
151917a3cbeSRussell King return ret;
1520101fd00SRussell King }
1530101fd00SRussell King
armada_drm_unbind(struct device * dev)1540101fd00SRussell King static void armada_drm_unbind(struct device *dev)
1550101fd00SRussell King {
156917a3cbeSRussell King struct drm_device *drm = dev_get_drvdata(dev);
157dad75a52SDaniel Vetter struct armada_private *priv = drm_to_armada_dev(drm);
158917a3cbeSRussell King
159917a3cbeSRussell King drm_kms_helper_poll_fini(&priv->drm);
160917a3cbeSRussell King
161917a3cbeSRussell King drm_dev_unregister(&priv->drm);
162917a3cbeSRussell King
1630ab17499SRussell King drm_atomic_helper_shutdown(&priv->drm);
1640ab17499SRussell King
165917a3cbeSRussell King component_unbind_all(dev, &priv->drm);
166917a3cbeSRussell King
167917a3cbeSRussell King drm_mode_config_cleanup(&priv->drm);
168917a3cbeSRussell King drm_mm_takedown(&priv->linear);
1690101fd00SRussell King }
1700101fd00SRussell King
armada_add_endpoints(struct device * dev,struct component_match ** match,struct device_node * dev_node)1710101fd00SRussell King static void armada_add_endpoints(struct device *dev,
172989b9a7dSRussell King struct component_match **match, struct device_node *dev_node)
1730101fd00SRussell King {
1740101fd00SRussell King struct device_node *ep, *remote;
1750101fd00SRussell King
176989b9a7dSRussell King for_each_endpoint_of_node(dev_node, ep) {
1770101fd00SRussell King remote = of_graph_get_remote_port_parent(ep);
178837567c1SRussell King if (remote && of_device_is_available(remote))
1791434fc3fSYong Wu drm_of_component_match_add(dev, match, component_compare_of,
1804bf99144SRob Herring remote);
1810101fd00SRussell King of_node_put(remote);
1820101fd00SRussell King }
1830101fd00SRussell King }
1840101fd00SRussell King
1857fc7e86dSLiviu Dudau static const struct component_master_ops armada_master_ops = {
1867fc7e86dSLiviu Dudau .bind = armada_drm_bind,
1877fc7e86dSLiviu Dudau .unbind = armada_drm_unbind,
1887fc7e86dSLiviu Dudau };
1897fc7e86dSLiviu Dudau
armada_drm_probe(struct platform_device * pdev)1907fc7e86dSLiviu Dudau static int armada_drm_probe(struct platform_device *pdev)
1910101fd00SRussell King {
1927fc7e86dSLiviu Dudau struct component_match *match = NULL;
1937fc7e86dSLiviu Dudau struct device *dev = &pdev->dev;
1947fc7e86dSLiviu Dudau int ret;
1957fc7e86dSLiviu Dudau
1961434fc3fSYong Wu ret = drm_of_component_probe(dev, component_compare_dev_name, &armada_master_ops);
1977fc7e86dSLiviu Dudau if (ret != -EINVAL)
1987fc7e86dSLiviu Dudau return ret;
1997fc7e86dSLiviu Dudau
2007fc7e86dSLiviu Dudau if (dev->platform_data) {
2017fc7e86dSLiviu Dudau char **devices = dev->platform_data;
2027fc7e86dSLiviu Dudau struct device *d;
2030101fd00SRussell King int i;
2040101fd00SRussell King
2050101fd00SRussell King for (i = 0; devices[i]; i++)
2061434fc3fSYong Wu component_match_add(dev, &match, component_compare_dev_name,
2070101fd00SRussell King devices[i]);
2080101fd00SRussell King
2090101fd00SRussell King if (i == 0) {
2100101fd00SRussell King dev_err(dev, "missing 'ports' property\n");
2110101fd00SRussell King return -ENODEV;
2120101fd00SRussell King }
2130101fd00SRussell King
2140101fd00SRussell King for (i = 0; devices[i]; i++) {
2150101fd00SRussell King d = bus_find_device_by_name(&platform_bus_type, NULL,
2160101fd00SRussell King devices[i]);
217989b9a7dSRussell King if (d && d->of_node)
218989b9a7dSRussell King armada_add_endpoints(dev, &match, d->of_node);
2190101fd00SRussell King put_device(d);
2200101fd00SRussell King }
2210101fd00SRussell King }
2220101fd00SRussell King
2230fb2970bSRussell King return component_master_add_with_match(&pdev->dev, &armada_master_ops,
2240fb2970bSRussell King match);
2250101fd00SRussell King }
22696f60e37SRussell King
armada_drm_remove(struct platform_device * pdev)22796f60e37SRussell King static int armada_drm_remove(struct platform_device *pdev)
22896f60e37SRussell King {
2290101fd00SRussell King component_master_del(&pdev->dev, &armada_master_ops);
23096f60e37SRussell King return 0;
23196f60e37SRussell King }
23296f60e37SRussell King
23396f60e37SRussell King static const struct platform_device_id armada_drm_platform_ids[] = {
23496f60e37SRussell King {
23596f60e37SRussell King .name = "armada-drm",
23696f60e37SRussell King }, {
23796f60e37SRussell King .name = "armada-510-drm",
23896f60e37SRussell King },
23996f60e37SRussell King { },
24096f60e37SRussell King };
24196f60e37SRussell King MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
24296f60e37SRussell King
24396f60e37SRussell King static struct platform_driver armada_drm_platform_driver = {
24496f60e37SRussell King .probe = armada_drm_probe,
24596f60e37SRussell King .remove = armada_drm_remove,
24696f60e37SRussell King .driver = {
24796f60e37SRussell King .name = "armada-drm",
24896f60e37SRussell King },
24996f60e37SRussell King .id_table = armada_drm_platform_ids,
25096f60e37SRussell King };
25196f60e37SRussell King
armada_drm_init(void)25296f60e37SRussell King static int __init armada_drm_init(void)
25396f60e37SRussell King {
254d8c96083SRussell King int ret;
255d8c96083SRussell King
256d593767eSJavier Martinez Canillas if (drm_firmware_drivers_only())
257d593767eSJavier Martinez Canillas return -ENODEV;
258d593767eSJavier Martinez Canillas
259d8c96083SRussell King ret = platform_driver_register(&armada_lcd_platform_driver);
260d8c96083SRussell King if (ret)
261d8c96083SRussell King return ret;
262d8c96083SRussell King ret = platform_driver_register(&armada_drm_platform_driver);
263d8c96083SRussell King if (ret)
264d8c96083SRussell King platform_driver_unregister(&armada_lcd_platform_driver);
265d8c96083SRussell King return ret;
26696f60e37SRussell King }
26796f60e37SRussell King module_init(armada_drm_init);
26896f60e37SRussell King
armada_drm_exit(void)26996f60e37SRussell King static void __exit armada_drm_exit(void)
27096f60e37SRussell King {
27196f60e37SRussell King platform_driver_unregister(&armada_drm_platform_driver);
272d8c96083SRussell King platform_driver_unregister(&armada_lcd_platform_driver);
27396f60e37SRussell King }
27496f60e37SRussell King module_exit(armada_drm_exit);
27596f60e37SRussell King
2764f39467eSRussell King MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
27796f60e37SRussell King MODULE_DESCRIPTION("Armada DRM Driver");
27896f60e37SRussell King MODULE_LICENSE("GPL");
27996f60e37SRussell King MODULE_ALIAS("platform:armada-drm");
280