1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
3 // Copyright 2021-2022 NXP
7 // Hardware interface for audio DSP on i.MX8ULP
9 #include <linux/arm-smccc.h>
12 #include <linux/firmware/imx/dsp.h>
26 #include "../sof-of-dev.h"
27 #include "imx-common.h"
47 	/* DSP IPC handler */
58 	/* Controls the HiFi4 DSP Reset: 1 in reset, 0 out of reset */  in imx8ulp_sim_lpav_start()
59 	regmap_update_bits(priv->regmap, SYSCTRL0, RESET_BIT, 0);  in imx8ulp_sim_lpav_start()
61 	/* Reset HiFi4 DSP Debug logic: 1 debug reset, 0  out of reset*/  in imx8ulp_sim_lpav_start()
62 	regmap_update_bits(priv->regmap, SYSCTRL0, DEBUG_LOGIC_BIT, 0);  in imx8ulp_sim_lpav_start()
64 	/* Stall HIFI4 DSP Execution: 1 stall, 0 run */  in imx8ulp_sim_lpav_start()
65 	regmap_update_bits(priv->regmap, SYSCTRL0, EXECUTE_BIT, 0);  in imx8ulp_sim_lpav_start()
83 	spin_lock_irqsave(&priv->sdev->ipc_lock, flags);  in imx8ulp_dsp_handle_reply()
85 	snd_sof_ipc_process_reply(priv->sdev, 0);  in imx8ulp_dsp_handle_reply()
87 	spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);  in imx8ulp_dsp_handle_reply()
96 	sof_mailbox_read(priv->sdev, priv->sdev->debug_box.offset + 4, &p, sizeof(p));  in imx8ulp_dsp_handle_request()
100 		snd_sof_dsp_panic(priv->sdev, p, true);  in imx8ulp_dsp_handle_request()
102 		snd_sof_ipc_msgs_rx(priv->sdev);  in imx8ulp_dsp_handle_request()
112 	struct imx8ulp_priv *priv = sdev->pdata->hw_pdata;  in imx8ulp_send_msg()
114 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,  in imx8ulp_send_msg()
115 			  msg->msg_size);  in imx8ulp_send_msg()
116 	imx_dsp_ring_doorbell(priv->dsp_ipc, 0);  in imx8ulp_send_msg()
123 	struct imx8ulp_priv *priv = sdev->pdata->hw_pdata;  in imx8ulp_run()
132 	struct imx8ulp_priv *priv = sdev->pdata->hw_pdata;  in imx8ulp_reset()
136 	regmap_update_bits(priv->regmap, SYSCTRL0, PLAT_CLK_BIT, PLAT_CLK_BIT);  in imx8ulp_reset()
139 	regmap_update_bits(priv->regmap, SYSCTRL0, PB_CLK_BIT, PB_CLK_BIT);  in imx8ulp_reset()
142 	regmap_update_bits(priv->regmap, SYSCTRL0, HIFI4_CLK_BIT, HIFI4_CLK_BIT);  in imx8ulp_reset()
144 	regmap_update_bits(priv->regmap, SYSCTRL0, RESET_BIT, RESET_BIT);  in imx8ulp_reset()
147 	/* Stall HIFI4 DSP Execution: 1 stall, 0 not stall */  in imx8ulp_reset()
148 	regmap_update_bits(priv->regmap, SYSCTRL0, EXECUTE_BIT, EXECUTE_BIT);  in imx8ulp_reset()
159 		container_of(sdev->dev, struct platform_device, dev);  in imx8ulp_probe()
160 	struct device_node *np = pdev->dev.of_node;  in imx8ulp_probe()
168 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in imx8ulp_probe()
170 		return -ENOMEM;  in imx8ulp_probe()
172 	sdev->num_cores = 1;  in imx8ulp_probe()
173 	sdev->pdata->hw_pdata = priv;  in imx8ulp_probe()
174 	priv->dev = sdev->dev;  in imx8ulp_probe()
175 	priv->sdev = sdev;  in imx8ulp_probe()
177 	/* System integration module(SIM) control dsp configuration */  in imx8ulp_probe()
178 	priv->regmap = syscon_regmap_lookup_by_phandle(np, "fsl,dsp-ctrl");  in imx8ulp_probe()
179 	if (IS_ERR(priv->regmap))  in imx8ulp_probe()
180 		return PTR_ERR(priv->regmap);  in imx8ulp_probe()
182 	priv->ipc_dev = platform_device_register_data(sdev->dev, "imx-dsp",  in imx8ulp_probe()
185 	if (IS_ERR(priv->ipc_dev))  in imx8ulp_probe()
186 		return PTR_ERR(priv->ipc_dev);  in imx8ulp_probe()
188 	priv->dsp_ipc = dev_get_drvdata(&priv->ipc_dev->dev);  in imx8ulp_probe()
189 	if (!priv->dsp_ipc) {  in imx8ulp_probe()
190 		/* DSP IPC driver not probed yet, try later */  in imx8ulp_probe()
191 		ret = -EPROBE_DEFER;  in imx8ulp_probe()
192 		dev_err(sdev->dev, "Failed to get drvdata\n");  in imx8ulp_probe()
196 	imx_dsp_set_data(priv->dsp_ipc, priv);  in imx8ulp_probe()
197 	priv->dsp_ipc->ops = &dsp_ops;  in imx8ulp_probe()
199 	/* DSP base */  in imx8ulp_probe()
202 		base = mmio->start;  in imx8ulp_probe()
205 		dev_err(sdev->dev, "error: failed to get DSP base at idx 0\n");  in imx8ulp_probe()
206 		ret = -EINVAL;  in imx8ulp_probe()
210 	sdev->bar[SOF_FW_BLK_TYPE_IRAM] = devm_ioremap(sdev->dev, base, size);  in imx8ulp_probe()
211 	if (!sdev->bar[SOF_FW_BLK_TYPE_IRAM]) {  in imx8ulp_probe()
212 		dev_err(sdev->dev, "failed to ioremap base 0x%x size 0x%x\n",  in imx8ulp_probe()
214 		ret = -ENODEV;  in imx8ulp_probe()
217 	sdev->mmio_bar = SOF_FW_BLK_TYPE_IRAM;  in imx8ulp_probe()
219 	res_node = of_parse_phandle(np, "memory-reserved", 0);  in imx8ulp_probe()
221 		dev_err(&pdev->dev, "failed to get memory region node\n");  in imx8ulp_probe()
222 		ret = -ENODEV;  in imx8ulp_probe()
229 		dev_err(&pdev->dev, "failed to get reserved region address\n");  in imx8ulp_probe()
233 	sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev, res.start,  in imx8ulp_probe()
235 	if (!sdev->bar[SOF_FW_BLK_TYPE_SRAM]) {  in imx8ulp_probe()
236 		dev_err(sdev->dev, "failed to ioremap mem 0x%x size 0x%x\n",  in imx8ulp_probe()
238 		ret = -ENOMEM;  in imx8ulp_probe()
241 	sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM;  in imx8ulp_probe()
244 	sdev->dsp_box.offset = MBOX_OFFSET;  in imx8ulp_probe()
246 	ret = of_reserved_mem_device_init(sdev->dev);  in imx8ulp_probe()
248 		dev_err(&pdev->dev, "failed to init reserved memory region %d\n", ret);  in imx8ulp_probe()
252 	ret = devm_clk_bulk_get_all(sdev->dev, &priv->clks);  in imx8ulp_probe()
254 		dev_err(sdev->dev, "failed to fetch clocks: %d\n", ret);  in imx8ulp_probe()
257 	priv->clk_num = ret;  in imx8ulp_probe()
259 	ret = clk_bulk_prepare_enable(priv->clk_num, priv->clks);  in imx8ulp_probe()
261 		dev_err(sdev->dev, "failed to enable clocks: %d\n", ret);  in imx8ulp_probe()
268 	platform_device_unregister(priv->ipc_dev);  in imx8ulp_probe()
275 	struct imx8ulp_priv *priv = sdev->pdata->hw_pdata;  in imx8ulp_remove()
277 	clk_bulk_disable_unprepare(priv->clk_num, priv->clks);  in imx8ulp_remove()
278 	platform_device_unregister(priv->ipc_dev);  in imx8ulp_remove()
290 	struct imx8ulp_priv *priv = (struct imx8ulp_priv *)sdev->pdata->hw_pdata;  in imx8ulp_suspend()
292 	/*Stall DSP,  release in .run() */  in imx8ulp_suspend()
293 	regmap_update_bits(priv->regmap, SYSCTRL0, EXECUTE_BIT, EXECUTE_BIT);  in imx8ulp_suspend()
296 		imx_dsp_free_channel(priv->dsp_ipc, i);  in imx8ulp_suspend()
298 	clk_bulk_disable_unprepare(priv->clk_num, priv->clks);  in imx8ulp_suspend()
305 	struct imx8ulp_priv *priv = (struct imx8ulp_priv *)sdev->pdata->hw_pdata;  in imx8ulp_resume()
308 	ret = clk_bulk_prepare_enable(priv->clk_num, priv->clks);  in imx8ulp_resume()
310 		dev_err(sdev->dev, "failed to enable clocks: %d\n", ret);  in imx8ulp_resume()
315 		imx_dsp_request_channel(priv->dsp_ipc, i);  in imx8ulp_resume()
351 	if (!pm_runtime_suspended(sdev->dev))  in imx8ulp_dsp_suspend()
366 	if (pm_runtime_suspended(sdev->dev)) {  in imx8ulp_dsp_resume()
367 		pm_runtime_disable(sdev->dev);  in imx8ulp_dsp_resume()
368 		pm_runtime_set_active(sdev->dev);  in imx8ulp_dsp_resume()
369 		pm_runtime_mark_last_busy(sdev->dev);  in imx8ulp_dsp_resume()
370 		pm_runtime_enable(sdev->dev);  in imx8ulp_dsp_resume()
371 		pm_runtime_idle(sdev->dev);  in imx8ulp_dsp_resume()
405 	sdev->dsp_power_state = *target_state;  in imx8ulp_dsp_set_power_state()
415 	/* DSP core boot */
417 	.reset		= imx8ulp_reset,
477 		.compatible = "fsl,imx8ulp-evk",
478 		.sof_tplg_filename = "sof-imx8ulp-btsco.tplg",
479 		.drv_name = "asoc-audio-graph-card2",
492 		[SOF_IPC_TYPE_3] = "imx/sof-tplg",
495 		[SOF_IPC_TYPE_3] = "sof-imx8ulp.ri",
497 	.nocodec_tplg_filename = "sof-imx8ulp-nocodec.tplg",
502 	{ .compatible = "fsl,imx8ulp-dsp", .data = &sof_of_imx8ulp_desc},
512 		.name = "sof-audio-of-imx8ulp",