1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
7 // Hardware interface for audio DSP on i.MX8M
20 #include <linux/firmware/imx/dsp.h>
23 #include "../sof-of-dev.h"
24 #include "imx-common.h"
35 /* DSP audio mix registers */
47 	/* DSP IPC handler */
73 	spin_lock_irqsave(&priv->sdev->ipc_lock, flags);  in imx8m_dsp_handle_reply()
74 	snd_sof_ipc_process_reply(priv->sdev, 0);  in imx8m_dsp_handle_reply()
75 	spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);  in imx8m_dsp_handle_reply()
84 	sof_mailbox_read(priv->sdev, priv->sdev->debug_box.offset + 4, &p, sizeof(p));  in imx8m_dsp_handle_request()
88 		snd_sof_dsp_panic(priv->sdev, p, true);  in imx8m_dsp_handle_request()
90 		snd_sof_ipc_msgs_rx(priv->sdev);  in imx8m_dsp_handle_request()
100 	struct imx8m_priv *priv = sdev->pdata->hw_pdata;  in imx8m_send_msg()
102 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,  in imx8m_send_msg()
103 			  msg->msg_size);  in imx8m_send_msg()
104 	imx_dsp_ring_doorbell(priv->dsp_ipc, 0);  in imx8m_send_msg()
110  * DSP control.
114 	struct imx8m_priv *priv = (struct imx8m_priv *)sdev->pdata->hw_pdata;  in imx8m_run()
116 	regmap_update_bits(priv->regmap, AudioDSP_REG2, AudioDSP_REG2_RUNSTALL, 0);  in imx8m_run()
123 	struct imx8m_priv *priv = (struct imx8m_priv *)sdev->pdata->hw_pdata;  in imx8m_reset()
126 	/* put DSP into reset and stall */  in imx8m_reset()
127 	pwrctl = readl(priv->dap + IMX8M_DAP_PWRCTL);  in imx8m_reset()
129 	writel(pwrctl, priv->dap + IMX8M_DAP_PWRCTL);  in imx8m_reset()
131 	/* keep reset asserted for 10 cycles */  in imx8m_reset()
134 	regmap_update_bits(priv->regmap, AudioDSP_REG2,  in imx8m_reset()
137 	/* take the DSP out of reset and keep stalled for FW loading */  in imx8m_reset()
138 	pwrctl = readl(priv->dap + IMX8M_DAP_PWRCTL);  in imx8m_reset()
140 	writel(pwrctl, priv->dap + IMX8M_DAP_PWRCTL);  in imx8m_reset()
148 		container_of(sdev->dev, struct platform_device, dev);  in imx8m_probe()
149 	struct device_node *np = pdev->dev.of_node;  in imx8m_probe()
157 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in imx8m_probe()
159 		return -ENOMEM;  in imx8m_probe()
161 	sdev->num_cores = 1;  in imx8m_probe()
162 	sdev->pdata->hw_pdata = priv;  in imx8m_probe()
163 	priv->dev = sdev->dev;  in imx8m_probe()
164 	priv->sdev = sdev;  in imx8m_probe()
166 	priv->ipc_dev = platform_device_register_data(sdev->dev, "imx-dsp",  in imx8m_probe()
169 	if (IS_ERR(priv->ipc_dev))  in imx8m_probe()
170 		return PTR_ERR(priv->ipc_dev);  in imx8m_probe()
172 	priv->dsp_ipc = dev_get_drvdata(&priv->ipc_dev->dev);  in imx8m_probe()
173 	if (!priv->dsp_ipc) {  in imx8m_probe()
174 		/* DSP IPC driver not probed yet, try later */  in imx8m_probe()
175 		ret = -EPROBE_DEFER;  in imx8m_probe()
176 		dev_err(sdev->dev, "Failed to get drvdata\n");  in imx8m_probe()
180 	imx_dsp_set_data(priv->dsp_ipc, priv);  in imx8m_probe()
181 	priv->dsp_ipc->ops = &imx8m_dsp_ops;  in imx8m_probe()
183 	/* DSP base */  in imx8m_probe()
186 		base = mmio->start;  in imx8m_probe()
189 		dev_err(sdev->dev, "error: failed to get DSP base at idx 0\n");  in imx8m_probe()
190 		ret = -EINVAL;  in imx8m_probe()
194 	priv->dap = devm_ioremap(sdev->dev, IMX8M_DAP_DEBUG, IMX8M_DAP_DEBUG_SIZE);  in imx8m_probe()
195 	if (!priv->dap) {  in imx8m_probe()
196 		dev_err(sdev->dev, "error: failed to map DAP debug memory area");  in imx8m_probe()
197 		ret = -ENODEV;  in imx8m_probe()
201 	sdev->bar[SOF_FW_BLK_TYPE_IRAM] = devm_ioremap(sdev->dev, base, size);  in imx8m_probe()
202 	if (!sdev->bar[SOF_FW_BLK_TYPE_IRAM]) {  in imx8m_probe()
203 		dev_err(sdev->dev, "failed to ioremap base 0x%x size 0x%x\n",  in imx8m_probe()
205 		ret = -ENODEV;  in imx8m_probe()
208 	sdev->mmio_bar = SOF_FW_BLK_TYPE_IRAM;  in imx8m_probe()
210 	res_node = of_parse_phandle(np, "memory-region", 0);  in imx8m_probe()
212 		dev_err(&pdev->dev, "failed to get memory region node\n");  in imx8m_probe()
213 		ret = -ENODEV;  in imx8m_probe()
220 		dev_err(&pdev->dev, "failed to get reserved region address\n");  in imx8m_probe()
224 	sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev, res.start,  in imx8m_probe()
226 	if (!sdev->bar[SOF_FW_BLK_TYPE_SRAM]) {  in imx8m_probe()
227 		dev_err(sdev->dev, "failed to ioremap mem 0x%x size 0x%x\n",  in imx8m_probe()
229 		ret = -ENOMEM;  in imx8m_probe()
232 	sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM;  in imx8m_probe()
235 	sdev->dsp_box.offset = MBOX_OFFSET;  in imx8m_probe()
237 	priv->regmap = syscon_regmap_lookup_by_phandle(np, "fsl,dsp-ctrl");  in imx8m_probe()
238 	if (IS_ERR(priv->regmap)) {  in imx8m_probe()
239 		dev_err(sdev->dev, "cannot find dsp-ctrl registers");  in imx8m_probe()
240 		ret = PTR_ERR(priv->regmap);  in imx8m_probe()
244 	ret = devm_clk_bulk_get_all(sdev->dev, &priv->clks);  in imx8m_probe()
246 		dev_err(sdev->dev, "failed to fetch clocks: %d\n", ret);  in imx8m_probe()
249 	priv->clk_num = ret;  in imx8m_probe()
251 	ret = clk_bulk_prepare_enable(priv->clk_num, priv->clks);  in imx8m_probe()
253 		dev_err(sdev->dev, "failed to enable clocks: %d\n", ret);  in imx8m_probe()
260 	platform_device_unregister(priv->ipc_dev);  in imx8m_probe()
266 	struct imx8m_priv *priv = sdev->pdata->hw_pdata;  in imx8m_remove()
268 	clk_bulk_disable_unprepare(priv->clk_num, priv->clks);  in imx8m_remove()
269 	platform_device_unregister(priv->ipc_dev);  in imx8m_remove()
281 		return -EINVAL;  in imx8m_get_bar_index()
320 	sdev->dsp_power_state = *target_state;  in imx8m_dsp_set_power_state()
327 	struct imx8m_priv *priv = (struct imx8m_priv *)sdev->pdata->hw_pdata;  in imx8m_resume()
331 	ret = clk_bulk_prepare_enable(priv->clk_num, priv->clks);  in imx8m_resume()
333 		dev_err(sdev->dev, "failed to enable clocks: %d\n", ret);  in imx8m_resume()
338 		imx_dsp_request_channel(priv->dsp_ipc, i);  in imx8m_resume()
345 	struct imx8m_priv *priv = (struct imx8m_priv *)sdev->pdata->hw_pdata;  in imx8m_suspend()
349 		imx_dsp_free_channel(priv->dsp_ipc, i);  in imx8m_suspend()
351 	clk_bulk_disable_unprepare(priv->clk_num, priv->clks);  in imx8m_suspend()
390 	if (pm_runtime_suspended(sdev->dev)) {  in imx8m_dsp_resume()
391 		pm_runtime_disable(sdev->dev);  in imx8m_dsp_resume()
392 		pm_runtime_set_active(sdev->dev);  in imx8m_dsp_resume()
393 		pm_runtime_mark_last_busy(sdev->dev);  in imx8m_dsp_resume()
394 		pm_runtime_enable(sdev->dev);  in imx8m_dsp_resume()
395 		pm_runtime_idle(sdev->dev);  in imx8m_dsp_resume()
407 	if (!pm_runtime_suspended(sdev->dev))  in imx8m_dsp_suspend()
418 	/* DSP core boot */
420 	.reset		= imx8m_reset,
475 		.compatible = "fsl,imx8mp-evk",
476 		.sof_tplg_filename = "sof-imx8mp-wm8960.tplg",
477 		.drv_name = "asoc-audio-graph-card2",
490 		[SOF_IPC_TYPE_3] = "imx/sof-tplg",
493 		[SOF_IPC_TYPE_3] = "sof-imx8m.ri",
495 	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
500 	{ .compatible = "fsl,imx8mp-dsp", .data = &sof_of_imx8mp_desc},
510 		.name = "sof-audio-of-imx8m",