1 // SPDX-License-Identifier: GPL-2.0
3  * ZynqMP DisplayPort Subsystem Driver
5  * Copyright (C) 2017 - 2020 Xilinx, Inc.
8  * - Hyun Woo Kwon <hyun.kwon@xilinx.com>
9  * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
13 #include <linux/dma-mapping.h>
35 /* -----------------------------------------------------------------------------
43 	struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm);  in zynqmp_dpsub_dumb_create()  local
44 	unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8);  in zynqmp_dpsub_dumb_create()
47 	args->pitch = ALIGN(pitch, dpsub->dma_align);  in zynqmp_dpsub_dumb_create()
56 	struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm);  in zynqmp_dpsub_fb_create()  local
62 		cmd.pitches[i] = ALIGN(cmd.pitches[i], dpsub->dma_align);  in zynqmp_dpsub_fb_create()
73 /* -----------------------------------------------------------------------------
87 	.name				= "zynqmp-dpsub",
90 	.major				= 1,
94 static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)  in zynqmp_dpsub_drm_init()  argument
96 	struct drm_device *drm = &dpsub->drm;  in zynqmp_dpsub_drm_init()
104 	drm->mode_config.funcs = &zynqmp_dpsub_mode_config_funcs;  in zynqmp_dpsub_drm_init()
105 	drm->mode_config.min_width = 0;  in zynqmp_dpsub_drm_init()
106 	drm->mode_config.min_height = 0;  in zynqmp_dpsub_drm_init()
107 	drm->mode_config.max_width = ZYNQMP_DISP_MAX_WIDTH;  in zynqmp_dpsub_drm_init()
108 	drm->mode_config.max_height = ZYNQMP_DISP_MAX_HEIGHT;  in zynqmp_dpsub_drm_init()
110 	ret = drm_vblank_init(drm, 1);  in zynqmp_dpsub_drm_init()
121 	ret = zynqmp_disp_drm_init(dpsub);  in zynqmp_dpsub_drm_init()
125 	ret = zynqmp_dp_drm_init(dpsub);  in zynqmp_dpsub_drm_init()
146 /* -----------------------------------------------------------------------------
152 	struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);  in zynqmp_dpsub_suspend()  local
154 	return drm_mode_config_helper_suspend(&dpsub->drm);  in zynqmp_dpsub_suspend()
159 	struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);  in zynqmp_dpsub_resume()  local
161 	return drm_mode_config_helper_resume(&dpsub->drm);  in zynqmp_dpsub_resume()
168 /* -----------------------------------------------------------------------------
172 static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub)  in zynqmp_dpsub_init_clocks()  argument
176 	dpsub->apb_clk = devm_clk_get(dpsub->dev, "dp_apb_clk");  in zynqmp_dpsub_init_clocks()
177 	if (IS_ERR(dpsub->apb_clk))  in zynqmp_dpsub_init_clocks()
178 		return PTR_ERR(dpsub->apb_clk);  in zynqmp_dpsub_init_clocks()
180 	ret = clk_prepare_enable(dpsub->apb_clk);  in zynqmp_dpsub_init_clocks()
182 		dev_err(dpsub->dev, "failed to enable the APB clock\n");  in zynqmp_dpsub_init_clocks()
191 	struct zynqmp_dpsub *dpsub;  in zynqmp_dpsub_probe()  local
195 	dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver,  in zynqmp_dpsub_probe()
197 	if (IS_ERR(dpsub))  in zynqmp_dpsub_probe()
198 		return PTR_ERR(dpsub);  in zynqmp_dpsub_probe()
200 	dpsub->dev = &pdev->dev;  in zynqmp_dpsub_probe()
201 	platform_set_drvdata(pdev, dpsub);  in zynqmp_dpsub_probe()
203 	dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));  in zynqmp_dpsub_probe()
206 	of_reserved_mem_device_init(&pdev->dev);  in zynqmp_dpsub_probe()
208 	ret = zynqmp_dpsub_init_clocks(dpsub);  in zynqmp_dpsub_probe()
212 	pm_runtime_enable(&pdev->dev);  in zynqmp_dpsub_probe()
218 	ret = zynqmp_dp_probe(dpsub, &dpsub->drm);  in zynqmp_dpsub_probe()
222 	ret = zynqmp_disp_probe(dpsub, &dpsub->drm);  in zynqmp_dpsub_probe()
226 	ret = zynqmp_dpsub_drm_init(dpsub);  in zynqmp_dpsub_probe()
230 	dev_info(&pdev->dev, "ZynqMP DisplayPort Subsystem driver probed");  in zynqmp_dpsub_probe()
235 	zynqmp_disp_remove(dpsub);  in zynqmp_dpsub_probe()
237 	zynqmp_dp_remove(dpsub);  in zynqmp_dpsub_probe()
239 	pm_runtime_disable(&pdev->dev);  in zynqmp_dpsub_probe()
240 	clk_disable_unprepare(dpsub->apb_clk);  in zynqmp_dpsub_probe()
242 	of_reserved_mem_device_release(&pdev->dev);  in zynqmp_dpsub_probe()
248 	struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);  in zynqmp_dpsub_remove()  local
249 	struct drm_device *drm = &dpsub->drm;  in zynqmp_dpsub_remove()
255 	zynqmp_disp_remove(dpsub);  in zynqmp_dpsub_remove()
256 	zynqmp_dp_remove(dpsub);  in zynqmp_dpsub_remove()
258 	pm_runtime_disable(&pdev->dev);  in zynqmp_dpsub_remove()
259 	clk_disable_unprepare(dpsub->apb_clk);  in zynqmp_dpsub_remove()
260 	of_reserved_mem_device_release(&pdev->dev);  in zynqmp_dpsub_remove()
267 	struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);  in zynqmp_dpsub_shutdown()  local
269 	drm_atomic_helper_shutdown(&dpsub->drm);  in zynqmp_dpsub_shutdown()
273 	{ .compatible = "xlnx,zynqmp-dpsub-1.7", },
283 		.name		= "zynqmp-dpsub",
292 MODULE_DESCRIPTION("ZynqMP DP Subsystem Driver");