1 // SPDX-License-Identifier: GPL-2.0-or-later
7  * Copyright (C) 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
12 #include <linux/dma-mapping.h>
81 	clk_prepare_enable(mxsfb->clk_axi);  in mxsfb_enable_axi_clk()
86 	clk_disable_unprepare(mxsfb->clk_axi);  in mxsfb_disable_axi_clk()
97 		return ERR_PTR(-EINVAL);  in mxsfb_fb_create()
99 	if (mode_cmd->width * info->cpp[0] != mode_cmd->pitches[0]) {  in mxsfb_fb_create()
100 		dev_dbg(dev->dev, "Invalid pitch: fb width must match pitch\n");  in mxsfb_fb_create()
101 		return ERR_PTR(-EINVAL);  in mxsfb_fb_create()
119 	struct drm_device *drm = mxsfb->drm;  in mxsfb_attach_bridge()
125 	ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel,  in mxsfb_attach_bridge()
131 		bridge = devm_drm_panel_bridge_add_typed(drm->dev, panel,  in mxsfb_attach_bridge()
138 		return -ENODEV;  in mxsfb_attach_bridge()
140 	ret = drm_bridge_attach(&mxsfb->encoder, bridge, NULL, 0);  in mxsfb_attach_bridge()
142 		return dev_err_probe(drm->dev, ret, "Failed to attach bridge\n");  in mxsfb_attach_bridge()
144 	mxsfb->bridge = bridge;  in mxsfb_attach_bridge()
151 	mxsfb->connector = drm_connector_list_iter_next(&iter);  in mxsfb_attach_bridge()
160 	struct mxsfb_drm_private *mxsfb = drm->dev_private;  in mxsfb_irq_handler()
164 	reg = readl(mxsfb->base + LCDC_CTRL1);  in mxsfb_irq_handler()
167 		drm_crtc_handle_vblank(&mxsfb->crtc);  in mxsfb_irq_handler()
168 		if (mxsfb->crc_active) {  in mxsfb_irq_handler()
169 			crc = readl(mxsfb->base + LCDC_V4_CRC_STAT);  in mxsfb_irq_handler()
170 			vbc = drm_crtc_accurate_vblank_count(&mxsfb->crtc);  in mxsfb_irq_handler()
171 			drm_crtc_add_crc_entry(&mxsfb->crtc, true, vbc, &crc);  in mxsfb_irq_handler()
175 	writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);  in mxsfb_irq_handler()
182 	struct mxsfb_drm_private *mxsfb = drm->dev_private;  in mxsfb_irq_disable()
187 	writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR);  in mxsfb_irq_disable()
188 	writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);  in mxsfb_irq_disable()
196 		return -ENOTCONN;  in mxsfb_irq_install()
200 	return request_irq(irq, mxsfb_irq_handler, 0,  dev->driver->name, dev);  in mxsfb_irq_install()
205 	struct mxsfb_drm_private *mxsfb = dev->dev_private;  in mxsfb_irq_uninstall()
208 	free_irq(mxsfb->irq, dev);  in mxsfb_irq_uninstall()
214 	struct platform_device *pdev = to_platform_device(drm->dev);  in mxsfb_load()
219 	mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL);  in mxsfb_load()
221 		return -ENOMEM;  in mxsfb_load()
223 	mxsfb->drm = drm;  in mxsfb_load()
224 	drm->dev_private = mxsfb;  in mxsfb_load()
225 	mxsfb->devdata = devdata;  in mxsfb_load()
228 	mxsfb->base = devm_ioremap_resource(drm->dev, res);  in mxsfb_load()
229 	if (IS_ERR(mxsfb->base))  in mxsfb_load()
230 		return PTR_ERR(mxsfb->base);  in mxsfb_load()
232 	mxsfb->clk = devm_clk_get(drm->dev, NULL);  in mxsfb_load()
233 	if (IS_ERR(mxsfb->clk))  in mxsfb_load()
234 		return PTR_ERR(mxsfb->clk);  in mxsfb_load()
236 	mxsfb->clk_axi = devm_clk_get_optional(drm->dev, "axi");  in mxsfb_load()
237 	if (IS_ERR(mxsfb->clk_axi))  in mxsfb_load()
238 		return PTR_ERR(mxsfb->clk_axi);  in mxsfb_load()
240 	mxsfb->clk_disp_axi = devm_clk_get(drm->dev, "disp_axi");  in mxsfb_load()
241 	if (IS_ERR(mxsfb->clk_disp_axi))  in mxsfb_load()
242 		mxsfb->clk_disp_axi = NULL;  in mxsfb_load()
244 	ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32));  in mxsfb_load()
248 	pm_runtime_enable(drm->dev);  in mxsfb_load()
255 		dev_err(drm->dev, "Failed to initialize KMS pipeline\n");  in mxsfb_load()
259 	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);  in mxsfb_load()
261 		dev_err(drm->dev, "Failed to initialise vblank\n");  in mxsfb_load()
266 	drm_crtc_vblank_off(&mxsfb->crtc);  in mxsfb_load()
270 		dev_err_probe(drm->dev, ret, "Cannot connect bridge\n");  in mxsfb_load()
274 	drm->mode_config.min_width	= MXSFB_MIN_XRES;  in mxsfb_load()
275 	drm->mode_config.min_height	= MXSFB_MIN_YRES;  in mxsfb_load()
276 	drm->mode_config.max_width	= MXSFB_MAX_XRES;  in mxsfb_load()
277 	drm->mode_config.max_height	= MXSFB_MAX_YRES;  in mxsfb_load()
278 	drm->mode_config.funcs		= &mxsfb_mode_config_funcs;  in mxsfb_load()
279 	drm->mode_config.helper_private	= &mxsfb_mode_config_helpers;  in mxsfb_load()
286 	mxsfb->irq = ret;  in mxsfb_load()
288 	pm_runtime_get_sync(drm->dev);  in mxsfb_load()
289 	ret = mxsfb_irq_install(drm, mxsfb->irq);  in mxsfb_load()
290 	pm_runtime_put_sync(drm->dev);  in mxsfb_load()
293 		dev_err(drm->dev, "Failed to install IRQ handler\n");  in mxsfb_load()
306 	pm_runtime_disable(drm->dev);  in mxsfb_load()
316 	pm_runtime_get_sync(drm->dev);  in mxsfb_unload()
318 	pm_runtime_put_sync(drm->dev);  in mxsfb_unload()
320 	drm->dev_private = NULL;  in mxsfb_unload()
322 	pm_runtime_disable(drm->dev);  in mxsfb_unload()
331 	.name	= "mxsfb-drm",
339 	{ .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devdata[MXSFB_V3], },
340 	{ .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devdata[MXSFB_V4], },
341 	{ .compatible = "fsl,imx6sx-lcdif", .data = &mxsfb_devdata[MXSFB_V6], },
350 			of_match_device(mxsfb_dt_ids, &pdev->dev);  in mxsfb_probe()
353 	if (!pdev->dev.of_node)  in mxsfb_probe()
354 		return -ENODEV;  in mxsfb_probe()
356 	drm = drm_dev_alloc(&mxsfb_driver, &pdev->dev);  in mxsfb_probe()
360 	ret = mxsfb_load(drm, of_id->data);  in mxsfb_probe()