3  * Microchip Image Sensor Controller (ISC) driver
13  * ISC video pipeline integrates the following submodules:
49 #include "atmel-isc-regs.h"
50 #include "atmel-isc.h"
57 static int isc_parse_dt(struct device *dev, struct isc_device *isc)  in isc_parse_dt()  argument
65 	INIT_LIST_HEAD(&isc->subdev_entities);  in isc_parse_dt()
126 		list_add_tail(&subdev_entity->list, &isc->subdev_entities);  in isc_parse_dt()
136 	struct isc_device *isc;  in atmel_isc_probe()  local
143 	isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);  in atmel_isc_probe()
144 	if (!isc)  in atmel_isc_probe()
147 	platform_set_drvdata(pdev, isc);  in atmel_isc_probe()
148 	isc->dev = dev;  in atmel_isc_probe()
155 	isc->regmap = devm_regmap_init_mmio(dev, io_base, &isc_regmap_config);  in atmel_isc_probe()
156 	if (IS_ERR(isc->regmap)) {  in atmel_isc_probe()
157 		ret = PTR_ERR(isc->regmap);  in atmel_isc_probe()
167 			       ATMEL_ISC_NAME, isc);  in atmel_isc_probe()
174 	ret = isc_pipeline_init(isc);  in atmel_isc_probe()
178 	isc->hclock = devm_clk_get(dev, "hclock");  in atmel_isc_probe()
179 	if (IS_ERR(isc->hclock)) {  in atmel_isc_probe()
180 		ret = PTR_ERR(isc->hclock);  in atmel_isc_probe()
185 	ret = clk_prepare_enable(isc->hclock);  in atmel_isc_probe()
191 	ret = isc_clk_init(isc);  in atmel_isc_probe()
193 		dev_err(dev, "failed to init isc clock: %d\n", ret);  in atmel_isc_probe()
197 	isc->ispck = isc->isc_clks[ISC_ISPCK].clk;  in atmel_isc_probe()
199 	ret = clk_prepare_enable(isc->ispck);  in atmel_isc_probe()
206 	ret = clk_set_rate(isc->ispck, clk_get_rate(isc->hclock));  in atmel_isc_probe()
212 	ret = v4l2_device_register(dev, &isc->v4l2_dev);  in atmel_isc_probe()
218 	ret = isc_parse_dt(dev, isc);  in atmel_isc_probe()
224 	if (list_empty(&isc->subdev_entities)) {  in atmel_isc_probe()
230 	list_for_each_entry(subdev_entity, &isc->subdev_entities, list) {  in atmel_isc_probe()
243 		ret = v4l2_async_notifier_register(&isc->v4l2_dev,  in atmel_isc_probe()
250 		if (video_is_registered(&isc->video_dev))  in atmel_isc_probe()
261 	isc_subdev_cleanup(isc);  in atmel_isc_probe()
264 	v4l2_device_unregister(&isc->v4l2_dev);  in atmel_isc_probe()
267 	clk_disable_unprepare(isc->ispck);  in atmel_isc_probe()
269 	clk_disable_unprepare(isc->hclock);  in atmel_isc_probe()
271 	isc_clk_cleanup(isc);  in atmel_isc_probe()
278 	struct isc_device *isc = platform_get_drvdata(pdev);  in atmel_isc_remove()  local
282 	isc_subdev_cleanup(isc);  in atmel_isc_remove()
284 	v4l2_device_unregister(&isc->v4l2_dev);  in atmel_isc_remove()
286 	clk_disable_unprepare(isc->ispck);  in atmel_isc_remove()
287 	clk_disable_unprepare(isc->hclock);  in atmel_isc_remove()
289 	isc_clk_cleanup(isc);  in atmel_isc_remove()
296 	struct isc_device *isc = dev_get_drvdata(dev);  in isc_runtime_suspend()  local
298 	clk_disable_unprepare(isc->ispck);  in isc_runtime_suspend()
299 	clk_disable_unprepare(isc->hclock);  in isc_runtime_suspend()
306 	struct isc_device *isc = dev_get_drvdata(dev);  in isc_runtime_resume()  local
309 	ret = clk_prepare_enable(isc->hclock);  in isc_runtime_resume()
313 	ret = clk_prepare_enable(isc->ispck);  in isc_runtime_resume()
315 		clk_disable_unprepare(isc->hclock);  in isc_runtime_resume()
326 	{ .compatible = "atmel,sama5d2-isc" },
345 MODULE_DESCRIPTION("The V4L2 driver for Atmel-ISC");