1 // SPDX-License-Identifier: GPL-2.0+
3  * AMD Yellow Carp ACP PCI Driver
8 #include <linux/pci.h>
45 	return -ETIMEDOUT;  in acp6x_power_on()
69 	return -ETIMEDOUT;  in acp6x_reset()
133 	val = acp6x_readl(adata->acp6x_base + ACP_EXTERNAL_INTR_STAT);  in acp6x_irq_handler()
135 		yc_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);  in acp6x_irq_handler()
136 		acp6x_writel(BIT(PDM_DMA_STAT), adata->acp6x_base + ACP_EXTERNAL_INTR_STAT);  in acp6x_irq_handler()
137 		if (yc_pdm_data->capture_stream)  in acp6x_irq_handler()
138 			snd_pcm_period_elapsed(yc_pdm_data->capture_stream);  in acp6x_irq_handler()
144 static int snd_acp6x_probe(struct pci_dev *pci,  in snd_acp6x_probe()  argument
157 	switch (pci->revision) {  in snd_acp6x_probe()
162 		dev_dbg(&pci->dev, "acp6x pci device not found\n");  in snd_acp6x_probe()
163 		return -ENODEV;  in snd_acp6x_probe()
165 	if (pci_enable_device(pci)) {  in snd_acp6x_probe()
166 		dev_err(&pci->dev, "pci_enable_device failed\n");  in snd_acp6x_probe()
167 		return -ENODEV;  in snd_acp6x_probe()
170 	ret = pci_request_regions(pci, "AMD ACP3x audio");  in snd_acp6x_probe()
172 		dev_err(&pci->dev, "pci_request_regions failed\n");  in snd_acp6x_probe()
176 	adata = devm_kzalloc(&pci->dev, sizeof(struct acp6x_dev_data),  in snd_acp6x_probe()
179 		ret = -ENOMEM;  in snd_acp6x_probe()
183 	addr = pci_resource_start(pci, 0);  in snd_acp6x_probe()
184 	adata->acp6x_base = devm_ioremap(&pci->dev, addr,  in snd_acp6x_probe()
185 					 pci_resource_len(pci, 0));  in snd_acp6x_probe()
186 	if (!adata->acp6x_base) {  in snd_acp6x_probe()
187 		ret = -ENOMEM;  in snd_acp6x_probe()
190 	pci_set_master(pci);  in snd_acp6x_probe()
191 	pci_set_drvdata(pci, adata);  in snd_acp6x_probe()
192 	ret = acp6x_init(adata->acp6x_base);  in snd_acp6x_probe()
195 	val = acp6x_readl(adata->acp6x_base + ACP_PIN_CONFIG);  in snd_acp6x_probe()
203 		dev_info(&pci->dev, "Audio Mode %d\n", val);  in snd_acp6x_probe()
206 		adata->res = devm_kzalloc(&pci->dev,  in snd_acp6x_probe()
209 		if (!adata->res) {  in snd_acp6x_probe()
210 			ret = -ENOMEM;  in snd_acp6x_probe()
214 		adata->res->name = "acp_iomem";  in snd_acp6x_probe()
215 		adata->res->flags = IORESOURCE_MEM;  in snd_acp6x_probe()
216 		adata->res->start = addr;  in snd_acp6x_probe()
217 		adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);  in snd_acp6x_probe()
219 		adata->acp6x_audio_mode = ACP6x_PDM_MODE;  in snd_acp6x_probe()
224 		pdevinfo[0].parent = &pci->dev;  in snd_acp6x_probe()
226 		pdevinfo[0].res = adata->res;  in snd_acp6x_probe()
228 		pdevinfo[1].name = "dmic-codec";  in snd_acp6x_probe()
230 		pdevinfo[1].parent = &pci->dev;  in snd_acp6x_probe()
234 		pdevinfo[2].parent = &pci->dev;  in snd_acp6x_probe()
237 			adata->pdev[index] =  in snd_acp6x_probe()
239 			if (IS_ERR(adata->pdev[index])) {  in snd_acp6x_probe()
240 				dev_err(&pci->dev, "cannot register %s device\n",  in snd_acp6x_probe()
242 				ret = PTR_ERR(adata->pdev[index]);  in snd_acp6x_probe()
248 	ret = devm_request_irq(&pci->dev, pci->irq, acp6x_irq_handler,  in snd_acp6x_probe()
251 		dev_err(&pci->dev, "ACP PCI IRQ request failed\n");  in snd_acp6x_probe()
254 	pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);  in snd_acp6x_probe()
255 	pm_runtime_use_autosuspend(&pci->dev);  in snd_acp6x_probe()
256 	pm_runtime_put_noidle(&pci->dev);  in snd_acp6x_probe()
257 	pm_runtime_allow(&pci->dev);  in snd_acp6x_probe()
261 	for (--index; index >= 0; index--)  in snd_acp6x_probe()
262 		platform_device_unregister(adata->pdev[index]);  in snd_acp6x_probe()
264 	if (acp6x_deinit(adata->acp6x_base))  in snd_acp6x_probe()
265 		dev_err(&pci->dev, "ACP de-init failed\n");  in snd_acp6x_probe()
267 	pci_release_regions(pci);  in snd_acp6x_probe()
269 	pci_disable_device(pci);  in snd_acp6x_probe()
274 static int __maybe_unused snd_acp6x_suspend(struct device *dev)  in snd_acp6x_suspend()  argument
279 	adata = dev_get_drvdata(dev);  in snd_acp6x_suspend()
280 	ret = acp6x_deinit(adata->acp6x_base);  in snd_acp6x_suspend()
282 		dev_err(dev, "ACP de-init failed\n");  in snd_acp6x_suspend()
286 static int __maybe_unused snd_acp6x_resume(struct device *dev)  in snd_acp6x_resume()  argument
291 	adata = dev_get_drvdata(dev);  in snd_acp6x_resume()
292 	ret = acp6x_init(adata->acp6x_base);  in snd_acp6x_resume()
294 		dev_err(dev, "ACP init failed\n");  in snd_acp6x_resume()
303 static void snd_acp6x_remove(struct pci_dev *pci)  in snd_acp6x_remove()  argument
308 	adata = pci_get_drvdata(pci);  in snd_acp6x_remove()
309 	if (adata->acp6x_audio_mode == ACP6x_PDM_MODE) {  in snd_acp6x_remove()
311 			platform_device_unregister(adata->pdev[index]);  in snd_acp6x_remove()
313 	ret = acp6x_deinit(adata->acp6x_base);  in snd_acp6x_remove()
315 		dev_err(&pci->dev, "ACP de-init failed\n");  in snd_acp6x_remove()
316 	pm_runtime_forbid(&pci->dev);  in snd_acp6x_remove()
317 	pm_runtime_get_noresume(&pci->dev);  in snd_acp6x_remove()
318 	pci_release_regions(pci);  in snd_acp6x_remove()
319 	pci_disable_device(pci);  in snd_acp6x_remove()
328 MODULE_DEVICE_TABLE(pci, snd_acp6x_ids);
343 MODULE_DESCRIPTION("AMD ACP Yellow Carp PCI driver");