1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2013-2015 Ideas on Board
6  * Copyright (C) 2013-2015 Xilinx, Inc.
18 #include "xilinx-vip.h"
19 #include "xilinx-vtc.h"
66  * The following registers exist in two blocks, one at 0x0020 for the detector
145  * struct xvtc_device - Xilinx Video Timing Controller device structure
148  * @has_detector: the VTC has a timing detector
167 	xvip_write(&xvtc->xvip, XVTC_GENERATOR_OFFSET + addr, value);  in xvtc_gen_write()
170 /* -----------------------------------------------------------------------------
179 	if (!xvtc->has_generator)  in xvtc_generator_start()
180 		return -ENXIO;  in xvtc_generator_start()
182 	ret = clk_prepare_enable(xvtc->xvip.clk);  in xvtc_generator_start()
196 	 * AXI4-stream core.  in xvtc_generator_start()
204 		       (config->vblank_start << XVTC_ACTIVE_VSIZE_SHIFT) |  in xvtc_generator_start()
205 		       (config->hblank_start << XVTC_ACTIVE_HSIZE_SHIFT));  in xvtc_generator_start()
206 	xvtc_gen_write(xvtc, XVTC_HSIZE, config->hsize);  in xvtc_generator_start()
207 	xvtc_gen_write(xvtc, XVTC_VSIZE, config->vsize);  in xvtc_generator_start()
209 		       (config->hsync_end << XVTC_HSYNC_END_SHIFT) |  in xvtc_generator_start()
210 		       (config->hsync_start << XVTC_HSYNC_START_SHIFT));  in xvtc_generator_start()
213 		       (config->vsync_end << XVTC_F0_VSYNC_VEND_SHIFT) |  in xvtc_generator_start()
214 		       (config->vsync_start << XVTC_F0_VSYNC_VSTART_SHIFT));  in xvtc_generator_start()
217 	/* Enable the generator. Set the source of all generator parameters to  in xvtc_generator_start()
220 	xvip_write(&xvtc->xvip, XVIP_CTRL_CONTROL,  in xvtc_generator_start()
240 	if (!xvtc->has_generator)  in xvtc_generator_stop()
241 		return -ENXIO;  in xvtc_generator_stop()
243 	xvip_write(&xvtc->xvip, XVIP_CTRL_CONTROL, 0);  in xvtc_generator_stop()
245 	clk_disable_unprepare(xvtc->xvip.clk);  in xvtc_generator_stop()
262 		return ERR_PTR(-EINVAL);  in xvtc_of_get()
266 		if (xvtc->xvip.dev->of_node == xvtc_node) {  in xvtc_of_get()
276 		return ERR_PTR(-EPROBE_DEFER);  in xvtc_of_get()
287 /* -----------------------------------------------------------------------------
294 	list_add_tail(&xvtc->list, &xvtc_list);  in xvtc_register_device()
301 	list_del(&xvtc->list);  in xvtc_unregister_device()
305 /* -----------------------------------------------------------------------------
311 	struct device_node *node = xvtc->xvip.dev->of_node;  in xvtc_parse_of()
313 	xvtc->has_detector = of_property_read_bool(node, "xlnx,detector");  in xvtc_parse_of()
314 	xvtc->has_generator = of_property_read_bool(node, "xlnx,generator");  in xvtc_parse_of()
324 	xvtc = devm_kzalloc(&pdev->dev, sizeof(*xvtc), GFP_KERNEL);  in xvtc_probe()
326 		return -ENOMEM;  in xvtc_probe()
328 	xvtc->xvip.dev = &pdev->dev;  in xvtc_probe()
334 	ret = xvip_init_resources(&xvtc->xvip);  in xvtc_probe()
340 	xvip_print_version(&xvtc->xvip);  in xvtc_probe()
353 	xvip_cleanup_resources(&xvtc->xvip);  in xvtc_remove()
359 	{ .compatible = "xlnx,v-tc-6.1" },
366 		.name = "xilinx-vtc",