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
158 	flag = snd_amd_acp_find_config(pci);  in snd_acp6x_probe()
160 		return -ENODEV;  in snd_acp6x_probe()
163 	switch (pci->revision) {  in snd_acp6x_probe()
168 		dev_dbg(&pci->dev, "acp6x pci device not found\n");  in snd_acp6x_probe()
169 		return -ENODEV;  in snd_acp6x_probe()
171 	if (pci_enable_device(pci)) {  in snd_acp6x_probe()
172 		dev_err(&pci->dev, "pci_enable_device failed\n");  in snd_acp6x_probe()
173 		return -ENODEV;  in snd_acp6x_probe()
176 	ret = pci_request_regions(pci, "AMD ACP3x audio");  in snd_acp6x_probe()
178 		dev_err(&pci->dev, "pci_request_regions failed\n");  in snd_acp6x_probe()
182 	adata = devm_kzalloc(&pci->dev, sizeof(struct acp6x_dev_data),  in snd_acp6x_probe()
185 		ret = -ENOMEM;  in snd_acp6x_probe()
189 	addr = pci_resource_start(pci, 0);  in snd_acp6x_probe()
190 	adata->acp6x_base = devm_ioremap(&pci->dev, addr,  in snd_acp6x_probe()
191 					 pci_resource_len(pci, 0));  in snd_acp6x_probe()
192 	if (!adata->acp6x_base) {  in snd_acp6x_probe()
193 		ret = -ENOMEM;  in snd_acp6x_probe()
196 	pci_set_master(pci);  in snd_acp6x_probe()
197 	pci_set_drvdata(pci, adata);  in snd_acp6x_probe()
198 	ret = acp6x_init(adata->acp6x_base);  in snd_acp6x_probe()
201 	val = acp6x_readl(adata->acp6x_base + ACP_PIN_CONFIG);  in snd_acp6x_probe()
209 		dev_info(&pci->dev, "Audio Mode %d\n", val);  in snd_acp6x_probe()
212 		adata->res = devm_kzalloc(&pci->dev,  in snd_acp6x_probe()
215 		if (!adata->res) {  in snd_acp6x_probe()
216 			ret = -ENOMEM;  in snd_acp6x_probe()
220 		adata->res->name = "acp_iomem";  in snd_acp6x_probe()
221 		adata->res->flags = IORESOURCE_MEM;  in snd_acp6x_probe()
222 		adata->res->start = addr;  in snd_acp6x_probe()
223 		adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);  in snd_acp6x_probe()
225 		adata->acp6x_audio_mode = ACP6x_PDM_MODE;  in snd_acp6x_probe()
230 		pdevinfo[0].parent = &pci->dev;  in snd_acp6x_probe()
232 		pdevinfo[0].res = adata->res;  in snd_acp6x_probe()
234 		pdevinfo[1].name = "dmic-codec";  in snd_acp6x_probe()
236 		pdevinfo[1].parent = &pci->dev;  in snd_acp6x_probe()
240 		pdevinfo[2].parent = &pci->dev;  in snd_acp6x_probe()
243 			adata->pdev[index] =  in snd_acp6x_probe()
245 			if (IS_ERR(adata->pdev[index])) {  in snd_acp6x_probe()
246 				dev_err(&pci->dev, "cannot register %s device\n",  in snd_acp6x_probe()
248 				ret = PTR_ERR(adata->pdev[index]);  in snd_acp6x_probe()
254 	ret = devm_request_irq(&pci->dev, pci->irq, acp6x_irq_handler,  in snd_acp6x_probe()
257 		dev_err(&pci->dev, "ACP PCI IRQ request failed\n");  in snd_acp6x_probe()
260 	pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);  in snd_acp6x_probe()
261 	pm_runtime_use_autosuspend(&pci->dev);  in snd_acp6x_probe()
262 	pm_runtime_put_noidle(&pci->dev);  in snd_acp6x_probe()
263 	pm_runtime_allow(&pci->dev);  in snd_acp6x_probe()
267 	for (--index; index >= 0; index--)  in snd_acp6x_probe()
268 		platform_device_unregister(adata->pdev[index]);  in snd_acp6x_probe()
270 	if (acp6x_deinit(adata->acp6x_base))  in snd_acp6x_probe()
271 		dev_err(&pci->dev, "ACP de-init failed\n");  in snd_acp6x_probe()
273 	pci_release_regions(pci);  in snd_acp6x_probe()
275 	pci_disable_device(pci);  in snd_acp6x_probe()
280 static int __maybe_unused snd_acp6x_suspend(struct device *dev)  in snd_acp6x_suspend()  argument
285 	adata = dev_get_drvdata(dev);  in snd_acp6x_suspend()
286 	ret = acp6x_deinit(adata->acp6x_base);  in snd_acp6x_suspend()
288 		dev_err(dev, "ACP de-init failed\n");  in snd_acp6x_suspend()
292 static int __maybe_unused snd_acp6x_resume(struct device *dev)  in snd_acp6x_resume()  argument
297 	adata = dev_get_drvdata(dev);  in snd_acp6x_resume()
298 	ret = acp6x_init(adata->acp6x_base);  in snd_acp6x_resume()
300 		dev_err(dev, "ACP init failed\n");  in snd_acp6x_resume()
309 static void snd_acp6x_remove(struct pci_dev *pci)  in snd_acp6x_remove()  argument
314 	adata = pci_get_drvdata(pci);  in snd_acp6x_remove()
315 	if (adata->acp6x_audio_mode == ACP6x_PDM_MODE) {  in snd_acp6x_remove()
317 			platform_device_unregister(adata->pdev[index]);  in snd_acp6x_remove()
319 	ret = acp6x_deinit(adata->acp6x_base);  in snd_acp6x_remove()
321 		dev_err(&pci->dev, "ACP de-init failed\n");  in snd_acp6x_remove()
322 	pm_runtime_forbid(&pci->dev);  in snd_acp6x_remove()
323 	pm_runtime_get_noresume(&pci->dev);  in snd_acp6x_remove()
324 	pci_release_regions(pci);  in snd_acp6x_remove()
325 	pci_disable_device(pci);  in snd_acp6x_remove()
334 MODULE_DEVICE_TABLE(pci, snd_acp6x_ids);
349 MODULE_DESCRIPTION("AMD ACP Yellow Carp PCI driver");