drivers/dma/stm32-dmamux.c

31 struct stm32_dmamux {
67 	struct stm32_dmamux *mux = route_data;
91 	struct stm32_dmamux *mux;
183 	struct stm32_dmamux_data *stm32_dmamux;
198 	stm32_dmamux = devm_kzalloc(&pdev->dev, sizeof(*stm32_dmamux) +
200 	if (!stm32_dmamux)
215 					 &stm32_dmamux->dma_reqs[i])) {
219 			stm32_dmamux->dma_reqs[i] =
222 		dma_req += stm32_dmamux->dma_reqs[i];
231 	stm32_dmamux->dma_requests = dma_req;
232 	stm32_dmamux->dma_reqs[0] = count;
235 				     &stm32_dmamux->dmamux_requests)) {
236 		stm32_dmamux->dmamux_requests = STM32_DMAMUX_MAX_REQUESTS;
238 			 stm32_dmamux->dmamux_requests);
246 	spin_lock_init(&stm32_dmamux->lock);
248 	stm32_dmamux->clk = devm_clk_get(&pdev->dev, NULL);
249 	if (IS_ERR(stm32_dmamux->clk))
250 		return dev_err_probe(&pdev->dev, PTR_ERR(stm32_dmamux->clk),
253 	ret = clk_prepare_enable(stm32_dmamux->clk);
270 	stm32_dmamux->iomem = iomem;
271 	stm32_dmamux->dmarouter.dev = &pdev->dev;
272 	stm32_dmamux->dmarouter.route_free = stm32_dmamux_free;
274 	platform_set_drvdata(pdev, stm32_dmamux);
281 	for (i = 0; i < stm32_dmamux->dma_requests; i++)
282 		stm32_dmamux_write(stm32_dmamux->iomem, STM32_DMAMUX_CCR(i), 0);
287 				     &stm32_dmamux->dmarouter);
296 	clk_disable_unprepare(stm32_dmamux->clk);
305 	struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
307 	clk_disable_unprepare(stm32_dmamux->clk);
315 	struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
318 	ret = clk_prepare_enable(stm32_dmamux->clk);
332 	struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
339 	for (i = 0; i < stm32_dmamux->dma_requests; i++)
340 		stm32_dmamux->ccr[i] = stm32_dmamux_read(stm32_dmamux->iomem,
353 	struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
364 	for (i = 0; i < stm32_dmamux->dma_requests; i++)
365 		stm32_dmamux_write(stm32_dmamux->iomem, STM32_DMAMUX_CCR(i),
366 				   stm32_dmamux->ccr[i]);