diff options
Diffstat (limited to 'drivers/gpu/drm/imx/imx-drm-core.c')
| -rw-r--r-- | drivers/gpu/drm/imx/imx-drm-core.c | 443 |
1 files changed, 0 insertions, 443 deletions
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c deleted file mode 100644 index 95e2181963d9..000000000000 --- a/drivers/gpu/drm/imx/imx-drm-core.c +++ /dev/null @@ -1,443 +0,0 @@ -/* - * Freescale i.MX drm driver - * - * Copyright (C) 2011 Sascha Hauer, Pengutronix - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * 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/component.h> -#include <linux/device.h> -#include <linux/dma-buf.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <drm/drmP.h> -#include <drm/drm_atomic.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_plane_helper.h> -#include <drm/drm_of.h> -#include <video/imx-ipu-v3.h> - -#include "imx-drm.h" -#include "ipuv3-plane.h" - -#define MAX_CRTC 4 - -struct imx_drm_device { - struct drm_device *drm; - unsigned int pipes; - struct drm_fbdev_cma *fbhelper; - struct drm_atomic_state *state; -}; - -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) -static int legacyfb_depth = 16; -module_param(legacyfb_depth, int, 0444); -#endif - -static void imx_drm_driver_lastclose(struct drm_device *drm) -{ - struct imx_drm_device *imxdrm = drm->dev_private; - - drm_fbdev_cma_restore_mode(imxdrm->fbhelper); -} - -DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops); - -void imx_drm_connector_destroy(struct drm_connector *connector) -{ - drm_connector_unregister(connector); - drm_connector_cleanup(connector); -} -EXPORT_SYMBOL_GPL(imx_drm_connector_destroy); - -void imx_drm_encoder_destroy(struct drm_encoder *encoder) -{ - drm_encoder_cleanup(encoder); -} -EXPORT_SYMBOL_GPL(imx_drm_encoder_destroy); - -static void imx_drm_output_poll_changed(struct drm_device *drm) -{ - struct imx_drm_device *imxdrm = drm->dev_private; - - drm_fbdev_cma_hotplug_event(imxdrm->fbhelper); -} - -static int imx_drm_atomic_check(struct drm_device *dev, - struct drm_atomic_state *state) -{ - int ret; - - ret = drm_atomic_helper_check_modeset(dev, state); - if (ret) - return ret; - - ret = drm_atomic_helper_check_planes(dev, state); - if (ret) - return ret; - - /* - * Check modeset again in case crtc_state->mode_changed is - * updated in plane's ->atomic_check callback. - */ - ret = drm_atomic_helper_check_modeset(dev, state); - if (ret) - return ret; - - /* Assign PRG/PRE channels and check if all constrains are satisfied. */ - ret = ipu_planes_assign_pre(dev, state); - if (ret) - return ret; - - return ret; -} - -static const struct drm_mode_config_funcs imx_drm_mode_config_funcs = { - .fb_create = drm_fb_cma_create, - .output_poll_changed = imx_drm_output_poll_changed, - .atomic_check = imx_drm_atomic_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state) -{ - struct drm_device *dev = state->dev; - struct drm_plane *plane; - struct drm_plane_state *old_plane_state; - bool plane_disabling = false; - int i; - - drm_atomic_helper_commit_modeset_disables(dev, state); - - drm_atomic_helper_commit_planes(dev, state, - DRM_PLANE_COMMIT_ACTIVE_ONLY | - DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET); - - drm_atomic_helper_commit_modeset_enables(dev, state); - - for_each_plane_in_state(state, plane, old_plane_state, i) { - if (drm_atomic_plane_disabling(old_plane_state, plane->state)) - plane_disabling = true; - } - - if (plane_disabling) { - drm_atomic_helper_wait_for_vblanks(dev, state); - - for_each_plane_in_state(state, plane, old_plane_state, i) - ipu_plane_disable_deferred(plane); - - } - - drm_atomic_helper_commit_hw_done(state); -} - -static const struct drm_mode_config_helper_funcs imx_drm_mode_config_helpers = { - .atomic_commit_tail = imx_drm_atomic_commit_tail, -}; - - -int imx_drm_encoder_parse_of(struct drm_device *drm, - struct drm_encoder *encoder, struct device_node *np) -{ - uint32_t crtc_mask = drm_of_find_possible_crtcs(drm, np); - - /* - * If we failed to find the CRTC(s) which this encoder is - * supposed to be connected to, it's because the CRTC has - * not been registered yet. Defer probing, and hope that - * the required CRTC is added later. - */ - if (crtc_mask == 0) - return -EPROBE_DEFER; - - encoder->possible_crtcs = crtc_mask; - - /* FIXME: this is the mask of outputs which can clone this output. */ - encoder->possible_clones = ~0; - - return 0; -} -EXPORT_SYMBOL_GPL(imx_drm_encoder_parse_of); - -static const struct drm_ioctl_desc imx_drm_ioctls[] = { - /* none so far */ -}; - -static struct drm_driver imx_drm_driver = { - .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | - DRIVER_ATOMIC, - .lastclose = imx_drm_driver_lastclose, - .gem_free_object_unlocked = drm_gem_cma_free_object, - .gem_vm_ops = &drm_gem_cma_vm_ops, - .dumb_create = drm_gem_cma_dumb_create, - .dumb_map_offset = drm_gem_cma_dumb_map_offset, - .dumb_destroy = drm_gem_dumb_destroy, - - .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 = drm_gem_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 = drm_gem_cma_prime_vmap, - .gem_prime_vunmap = drm_gem_cma_prime_vunmap, - .gem_prime_mmap = drm_gem_cma_prime_mmap, - .ioctls = imx_drm_ioctls, - .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), - .fops = &imx_drm_driver_fops, - .name = "imx-drm", - .desc = "i.MX DRM graphics", - .date = "20120507", - .major = 1, - .minor = 0, - .patchlevel = 0, -}; - -static int compare_of(struct device *dev, void *data) -{ - struct device_node *np = data; - - /* Special case for DI, dev->of_node may not be set yet */ - if (strcmp(dev->driver->name, "imx-ipuv3-crtc") == 0) { - struct ipu_client_platformdata *pdata = dev->platform_data; - - return pdata->of_node == np; - } - - /* Special case for LDB, one device for two channels */ - if (of_node_cmp(np->name, "lvds-channel") == 0) { - np = of_get_parent(np); - of_node_put(np); - } - - return dev->of_node == np; -} - -static int imx_drm_bind(struct device *dev) -{ - struct drm_device *drm; - struct imx_drm_device *imxdrm; - int ret; - - drm = drm_dev_alloc(&imx_drm_driver, dev); - if (IS_ERR(drm)) - return PTR_ERR(drm); - - imxdrm = devm_kzalloc(dev, sizeof(*imxdrm), GFP_KERNEL); - if (!imxdrm) { - ret = -ENOMEM; - goto err_unref; - } - - imxdrm->drm = drm; - drm->dev_private = imxdrm; - - /* - * enable drm irq mode. - * - with irq_enabled = true, we can use the vblank feature. - * - * P.S. note that we wouldn't use drm irq handler but - * just specific driver own one instead because - * drm framework supports only one irq handler and - * drivers can well take care of their interrupts - */ - drm->irq_enabled = true; - - /* - * set max width and height as default value(4096x4096). - * this value would be used to check framebuffer size limitation - * at drm_mode_addfb(). - */ - drm->mode_config.min_width = 1; - drm->mode_config.min_height = 1; - drm->mode_config.max_width = 4096; - drm->mode_config.max_height = 4096; - drm->mode_config.funcs = &imx_drm_mode_config_funcs; - drm->mode_config.helper_private = &imx_drm_mode_config_helpers; - - drm_mode_config_init(drm); - - ret = drm_vblank_init(drm, MAX_CRTC); - if (ret) - goto err_kms; - - dev_set_drvdata(dev, drm); - - /* Now try and bind all our sub-components */ - ret = component_bind_all(dev, drm); - if (ret) - goto err_kms; - - drm_mode_config_reset(drm); - - /* - * All components are now initialised, so setup the fb helper. - * The fb helper takes copies of key hardware information, so the - * crtcs/connectors/encoders must not change after this point. - */ -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) - if (legacyfb_depth != 16 && legacyfb_depth != 32) { - dev_warn(dev, "Invalid legacyfb_depth. Defaulting to 16bpp\n"); - legacyfb_depth = 16; - } - imxdrm->fbhelper = drm_fbdev_cma_init(drm, legacyfb_depth, MAX_CRTC); - if (IS_ERR(imxdrm->fbhelper)) { - ret = PTR_ERR(imxdrm->fbhelper); - imxdrm->fbhelper = NULL; - goto err_unbind; - } -#endif - - drm_kms_helper_poll_init(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - goto err_fbhelper; - - return 0; - -err_fbhelper: - drm_kms_helper_poll_fini(drm); -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) - if (imxdrm->fbhelper) - drm_fbdev_cma_fini(imxdrm->fbhelper); -err_unbind: -#endif - component_unbind_all(drm->dev, drm); -err_kms: - drm_mode_config_cleanup(drm); -err_unref: - drm_dev_unref(drm); - - return ret; -} - -static void imx_drm_unbind(struct device *dev) -{ - struct drm_device *drm = dev_get_drvdata(dev); - struct imx_drm_device *imxdrm = drm->dev_private; - - drm_dev_unregister(drm); - - drm_kms_helper_poll_fini(drm); - - if (imxdrm->fbhelper) - drm_fbdev_cma_fini(imxdrm->fbhelper); - - drm_mode_config_cleanup(drm); - - component_unbind_all(drm->dev, drm); - dev_set_drvdata(dev, NULL); - - drm_dev_unref(drm); -} - -static const struct component_master_ops imx_drm_ops = { - .bind = imx_drm_bind, - .unbind = imx_drm_unbind, -}; - -static int imx_drm_platform_probe(struct platform_device *pdev) -{ - int ret = drm_of_component_probe(&pdev->dev, compare_of, &imx_drm_ops); - - if (!ret) - ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - - return ret; -} - -static int imx_drm_platform_remove(struct platform_device *pdev) -{ - component_master_del(&pdev->dev, &imx_drm_ops); - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int imx_drm_suspend(struct device *dev) -{ - struct drm_device *drm_dev = dev_get_drvdata(dev); - struct imx_drm_device *imxdrm; - - /* The drm_dev is NULL before .load hook is called */ - if (drm_dev == NULL) - return 0; - - drm_kms_helper_poll_disable(drm_dev); - - imxdrm = drm_dev->dev_private; - imxdrm->state = drm_atomic_helper_suspend(drm_dev); - if (IS_ERR(imxdrm->state)) { - drm_kms_helper_poll_enable(drm_dev); - return PTR_ERR(imxdrm->state); - } - - return 0; -} - -static int imx_drm_resume(struct device *dev) -{ - struct drm_device *drm_dev = dev_get_drvdata(dev); - struct imx_drm_device *imx_drm; - - if (drm_dev == NULL) - return 0; - - imx_drm = drm_dev->dev_private; - drm_atomic_helper_resume(drm_dev, imx_drm->state); - drm_kms_helper_poll_enable(drm_dev); - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(imx_drm_pm_ops, imx_drm_suspend, imx_drm_resume); - -static const struct of_device_id imx_drm_dt_ids[] = { - { .compatible = "fsl,imx-display-subsystem", }, - { /* sentinel */ }, -}; -MODULE_DEVICE_TABLE(of, imx_drm_dt_ids); - -static struct platform_driver imx_drm_pdrv = { - .probe = imx_drm_platform_probe, - .remove = imx_drm_platform_remove, - .driver = { - .name = "imx-drm", - .pm = &imx_drm_pm_ops, - .of_match_table = imx_drm_dt_ids, - }, -}; - -static struct platform_driver * const drivers[] = { - &imx_drm_pdrv, - &ipu_drm_driver, -}; - -static int __init imx_drm_init(void) -{ - return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); -} -module_init(imx_drm_init); - -static void __exit imx_drm_exit(void) -{ - platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); -} -module_exit(imx_drm_exit); - -MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); -MODULE_DESCRIPTION("i.MX drm driver core"); -MODULE_LICENSE("GPL"); |