diff options
Diffstat (limited to 'drivers/gpu/drm/arc/arcpgu_drv.c')
| -rw-r--r-- | drivers/gpu/drm/arc/arcpgu_drv.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c deleted file mode 100644 index 077d006b1fbf..000000000000 --- a/drivers/gpu/drm/arc/arcpgu_drv.c +++ /dev/null @@ -1,224 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * ARC PGU DRM driver. - * - * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com) - */ - -#include <linux/clk.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_debugfs.h> -#include <drm/drm_device.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_of.h> -#include <drm/drm_probe_helper.h> -#include <linux/dma-mapping.h> -#include <linux/module.h> -#include <linux/of_reserved_mem.h> -#include <linux/platform_device.h> - -#include "arcpgu.h" -#include "arcpgu_regs.h" - -static const struct drm_mode_config_funcs arcpgu_drm_modecfg_funcs = { - .fb_create = drm_gem_fb_create, - .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 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 = NULL, *endpoint_node = NULL; - 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; - - /* - * There is only one output port inside each device. It is linked with - * encoder endpoint. - */ - endpoint_node = of_graph_get_next_endpoint(pdev->dev.of_node, NULL); - if (endpoint_node) { - encoder_node = of_graph_get_remote_port_parent(endpoint_node); - of_node_put(endpoint_node); - } - - if (encoder_node) { - ret = arcpgu_drm_hdmi_init(drm, encoder_node); - of_node_put(encoder_node); - if (ret < 0) - return ret; - } else { - dev_info(drm->dev, "no encoder found. Assumed virtual LCD on simulation platform\n"); - ret = arcpgu_drm_sim_init(drm, NULL); - if (ret < 0) - return ret; - } - - drm_mode_config_reset(drm); - drm_kms_helper_poll_init(drm); - - platform_set_drvdata(pdev, drm); - return 0; -} - -static int arcpgu_unload(struct drm_device *drm) -{ - drm_kms_helper_poll_fini(drm); - drm_atomic_helper_shutdown(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 }, -}; - -static void arcpgu_debugfs_init(struct drm_minor *minor) -{ - drm_debugfs_create_files(arcpgu_debugfs_list, - ARRAY_SIZE(arcpgu_debugfs_list), - minor->debugfs_root, minor); -} -#endif - -static const struct drm_driver arcpgu_drm_driver = { - .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, - .name = "arcpgu", - .desc = "ARC PGU Controller", - .date = "20160219", - .major = 1, - .minor = 0, - .patchlevel = 0, - .fops = &arcpgu_drm_ops, - DRM_GEM_CMA_DRIVER_OPS, -#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; - - drm_fbdev_generic_setup(drm, 16); - - return 0; - -err_unload: - arcpgu_unload(drm); - -err_unref: - drm_dev_put(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_put(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"); |