drivers/mfd/stm32-timers.c

55 	struct stm32_timers *ddata = dev_get_drvdata(dev);
57 	struct regmap *regmap = ddata->regmap;
58 	struct stm32_timers_dma *dma = &ddata->dma;
160 static void stm32_timers_get_arr_size(struct stm32_timers *ddata)
165 	regmap_read(ddata->regmap, TIM_ARR, &arr);
171 	regmap_write(ddata->regmap, TIM_ARR, ~0L);
172 	regmap_read(ddata->regmap, TIM_ARR, &ddata->max_arr);
173 	regmap_write(ddata->regmap, TIM_ARR, arr);
177 				   struct stm32_timers *ddata)
183 	init_completion(&ddata->dma.completion);
184 	mutex_init(&ddata->dma.lock);
189 		ddata->dma.chans[i] = dma_request_chan(dev, name);
191 	ddata->dma.chans[STM32_TIMERS_DMA_UP] = dma_request_chan(dev, "up");
192 	ddata->dma.chans[STM32_TIMERS_DMA_TRIG] = dma_request_chan(dev, "trig");
193 	ddata->dma.chans[STM32_TIMERS_DMA_COM] = dma_request_chan(dev, "com");
196 		if (IS_ERR(ddata->dma.chans[i])) {
198 			if (PTR_ERR(ddata->dma.chans[i]) != -ENODEV && !ret)
199 				ret = PTR_ERR(ddata->dma.chans[i]);
201 			ddata->dma.chans[i] = NULL;
209 				    struct stm32_timers *ddata)
214 		if (ddata->dma.chans[i])
215 			dma_release_channel(ddata->dma.chans[i]);
223 				  struct stm32_timers *ddata)
237 		ddata->irq[STM32_TIMERS_IRQ_GLOBAL_BRK] = ret;
238 		ddata->nr_irqs = 1;
247 			ddata->irq[i] = ret;
248 			ddata->nr_irqs++;
252 	if (ddata->nr_irqs && ddata->nr_irqs != STM32_TIMERS_MAX_IRQS) {
253 		dev_err(&pdev->dev, "Invalid number of IRQs %d\n", ddata->nr_irqs);
263 	struct stm32_timers *ddata;
268 	ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
269 	if (!ddata)
277 	ddata->dma.phys_base = res->start;
279 	ddata->regmap = devm_regmap_init_mmio_clk(dev, "int", mmio,
281 	if (IS_ERR(ddata->regmap))
282 		return PTR_ERR(ddata->regmap);
284 	ddata->clk = devm_clk_get(dev, NULL);
285 	if (IS_ERR(ddata->clk))
286 		return PTR_ERR(ddata->clk);
288 	stm32_timers_get_arr_size(ddata);
290 	ret = stm32_timers_irq_probe(pdev, ddata);
294 	ret = stm32_timers_dma_probe(dev, ddata);
296 		stm32_timers_dma_remove(dev, ddata);
300 	platform_set_drvdata(pdev, ddata);
304 		stm32_timers_dma_remove(dev, ddata);
311 	struct stm32_timers *ddata = platform_get_drvdata(pdev);
318 	stm32_timers_dma_remove(&pdev->dev, ddata);