104 	struct stm32_crc *crc;  in stm32_crc_get_next_crc()  local
107 	crc = list_first_entry(&crc_list.dev_list, struct stm32_crc, list);  in stm32_crc_get_next_crc()
108 	if (crc)  in stm32_crc_get_next_crc()
109 		list_move_tail(&crc->list, &crc_list.dev_list);  in stm32_crc_get_next_crc()
112 	return crc;  in stm32_crc_get_next_crc()
119 	struct stm32_crc *crc;  in stm32_crc_init()  local
122 	crc = stm32_crc_get_next_crc();  in stm32_crc_init()
123 	if (!crc)  in stm32_crc_init()
126 	pm_runtime_get_sync(crc->dev);  in stm32_crc_init()
128 	spin_lock_irqsave(&crc->lock, flags);  in stm32_crc_init()
131 	writel_relaxed(bitrev32(mctx->key), crc->regs + CRC_INIT);  in stm32_crc_init()
132 	writel_relaxed(bitrev32(mctx->poly), crc->regs + CRC_POL);  in stm32_crc_init()
134 		       crc->regs + CRC_CR);  in stm32_crc_init()
137 	ctx->partial = readl_relaxed(crc->regs + CRC_DR);  in stm32_crc_init()
139 	spin_unlock_irqrestore(&crc->lock, flags);  in stm32_crc_init()
141 	pm_runtime_mark_last_busy(crc->dev);  in stm32_crc_init()
142 	pm_runtime_put_autosuspend(crc->dev);  in stm32_crc_init()
152 	struct stm32_crc *crc;  in burst_update()  local
154 	crc = stm32_crc_get_next_crc();  in burst_update()
155 	if (!crc)  in burst_update()
158 	pm_runtime_get_sync(crc->dev);  in burst_update()
160 	if (!spin_trylock(&crc->lock)) {  in burst_update()
171 	 * Restore previously calculated CRC for this context as init value  in burst_update()
176 	writel_relaxed(bitrev32(ctx->partial), crc->regs + CRC_INIT);  in burst_update()
177 	writel_relaxed(bitrev32(mctx->poly), crc->regs + CRC_POL);  in burst_update()
179 		       crc->regs + CRC_CR);  in burst_update()
184 			       crc->regs + CRC_CR);  in burst_update()
186 			writeb_relaxed(*d8++, crc->regs + CRC_DR);  in burst_update()
191 			       crc->regs + CRC_CR);  in burst_update()
195 		writel_relaxed(*((u32 *)d8), crc->regs + CRC_DR);  in burst_update()
200 			       crc->regs + CRC_CR);  in burst_update()
202 			writeb_relaxed(*d8++, crc->regs + CRC_DR);  in burst_update()
206 	ctx->partial = readl_relaxed(crc->regs + CRC_DR);  in burst_update()
208 	spin_unlock(&crc->lock);  in burst_update()
211 	pm_runtime_mark_last_busy(crc->dev);  in burst_update()
212 	pm_runtime_put_autosuspend(crc->dev);  in burst_update()
247 	/* Send computed CRC */  in stm32_crc_final()
270 	/* CRC-32 */
292 	/* CRC-32Castagnoli */
319 	struct stm32_crc *crc;  in stm32_crc_probe()  local
322 	crc = devm_kzalloc(dev, sizeof(*crc), GFP_KERNEL);  in stm32_crc_probe()
323 	if (!crc)  in stm32_crc_probe()
326 	crc->dev = dev;  in stm32_crc_probe()
328 	crc->regs = devm_platform_ioremap_resource(pdev, 0);  in stm32_crc_probe()
329 	if (IS_ERR(crc->regs)) {  in stm32_crc_probe()
330 		dev_err(dev, "Cannot map CRC IO\n");  in stm32_crc_probe()
331 		return PTR_ERR(crc->regs);  in stm32_crc_probe()
334 	crc->clk = devm_clk_get(dev, NULL);  in stm32_crc_probe()
335 	if (IS_ERR(crc->clk)) {  in stm32_crc_probe()
337 		return PTR_ERR(crc->clk);  in stm32_crc_probe()
340 	ret = clk_prepare_enable(crc->clk);  in stm32_crc_probe()
342 		dev_err(crc->dev, "Failed to enable clock\n");  in stm32_crc_probe()
354 	spin_lock_init(&crc->lock);  in stm32_crc_probe()
356 	platform_set_drvdata(pdev, crc);  in stm32_crc_probe()
359 	list_add(&crc->list, &crc_list.dev_list);  in stm32_crc_probe()
368 			clk_disable_unprepare(crc->clk);  in stm32_crc_probe()
384 	struct stm32_crc *crc = platform_get_drvdata(pdev);  in stm32_crc_remove()  local
385 	int ret = pm_runtime_get_sync(crc->dev);  in stm32_crc_remove()
388 		pm_runtime_put_noidle(crc->dev);  in stm32_crc_remove()
393 	list_del(&crc->list);  in stm32_crc_remove()
401 	pm_runtime_disable(crc->dev);  in stm32_crc_remove()
402 	pm_runtime_put_noidle(crc->dev);  in stm32_crc_remove()
404 	clk_disable_unprepare(crc->clk);  in stm32_crc_remove()
411 	struct stm32_crc *crc = dev_get_drvdata(dev);  in stm32_crc_suspend()  local
418 	clk_unprepare(crc->clk);  in stm32_crc_suspend()
425 	struct stm32_crc *crc = dev_get_drvdata(dev);  in stm32_crc_resume()  local
428 	ret = clk_prepare(crc->clk);  in stm32_crc_resume()
430 		dev_err(crc->dev, "Failed to prepare clock\n");  in stm32_crc_resume()
439 	struct stm32_crc *crc = dev_get_drvdata(dev);  in stm32_crc_runtime_suspend()  local
441 	clk_disable(crc->clk);  in stm32_crc_runtime_suspend()
448 	struct stm32_crc *crc = dev_get_drvdata(dev);  in stm32_crc_runtime_resume()  local
451 	ret = clk_enable(crc->clk);  in stm32_crc_runtime_resume()
453 		dev_err(crc->dev, "Failed to enable clock\n");  in stm32_crc_runtime_resume()
468 	{ .compatible = "st,stm32f7-crc", },