1 // SPDX-License-Identifier: GPL-2.0-only
2 // SPDX-FileCopyrightText: Copyright (c) 2020-2025 NVIDIA CORPORATION. All rights reserved.
4 // tegra_audio_graph_card.c - Audio Graph based Tegra Machine Driver
12 #include <sound/soc-dai.h>
41 /* Tegra audio chip data */
50 	    !dai->driver->ops ||  in need_clk_update()
51 	    !dai->driver->name)  in need_clk_update()
54 	if (strstr(dai->driver->name, "I2S") ||  in need_clk_update()
55 	    strstr(dai->driver->name, "DMIC") ||  in need_clk_update()
56 	    strstr(dai->driver->name, "DSPK"))  in need_clk_update()
67 	struct simple_util_priv *simple = snd_soc_card_get_drvdata(rtd->card);  in tegra_audio_graph_update_pll()
69 	struct device *dev = rtd->card->dev;  in tegra_audio_graph_update_pll()
81 		plla_out0_rate = data->plla_out0_rates[x11_RATE];  in tegra_audio_graph_update_pll()
82 		plla_rate = data->plla_rates[x11_RATE];  in tegra_audio_graph_update_pll()
90 		plla_out0_rate = data->plla_out0_rates[x8_RATE];  in tegra_audio_graph_update_pll()
91 		plla_rate = data->plla_rates[x8_RATE];  in tegra_audio_graph_update_pll()
94 		dev_err(rtd->card->dev, "Unsupported sample rate %u\n",  in tegra_audio_graph_update_pll()
96 		return -EINVAL;  in tegra_audio_graph_update_pll()
104 	 *	  |--> PLLA_OUT0  in tegra_audio_graph_update_pll()
106 	 *		  |---> I2S modules  in tegra_audio_graph_update_pll()
108 	 *		  |---> DMIC modules  in tegra_audio_graph_update_pll()
110 	 *		  |---> DSPK modules  in tegra_audio_graph_update_pll()
115 	 * clock rates and glitchy audio. The maximum divider is 128  in tegra_audio_graph_update_pll()
126 	dev_dbg(rtd->card->dev,  in tegra_audio_graph_update_pll()
131 	err = clk_set_rate(priv->clk_plla, plla_rate);  in tegra_audio_graph_update_pll()
133 		dev_err(rtd->card->dev,  in tegra_audio_graph_update_pll()
140 	err = clk_set_rate(priv->clk_plla_out0, plla_out0_rate);  in tegra_audio_graph_update_pll()
142 		dev_err(rtd->card->dev,  in tegra_audio_graph_update_pll()
178 	priv->clk_plla = devm_clk_get(card->dev, "pll_a");  in tegra_audio_graph_card_probe()
179 	if (IS_ERR(priv->clk_plla)) {  in tegra_audio_graph_card_probe()
180 		dev_err(card->dev, "Can't retrieve clk pll_a\n");  in tegra_audio_graph_card_probe()
181 		return PTR_ERR(priv->clk_plla);  in tegra_audio_graph_card_probe()
184 	priv->clk_plla_out0 = devm_clk_get(card->dev, "plla_out0");  in tegra_audio_graph_card_probe()
185 	if (IS_ERR(priv->clk_plla_out0)) {  in tegra_audio_graph_card_probe()
186 		dev_err(card->dev, "Can't retrieve clk plla_out0\n");  in tegra_audio_graph_card_probe()
187 		return PTR_ERR(priv->clk_plla_out0);  in tegra_audio_graph_card_probe()
196 	struct device *dev = &pdev->dev;  in tegra_audio_graph_probe()
201 		return -ENOMEM;  in tegra_audio_graph_probe()
203 	card = simple_priv_to_card(&priv->simple);  in tegra_audio_graph_probe()
204 	card->driver_name = "tegra-ape";  in tegra_audio_graph_probe()
206 	card->probe = tegra_audio_graph_card_probe;  in tegra_audio_graph_probe()
209 	card->component_chaining = 1;  in tegra_audio_graph_probe()
210 	priv->simple.ops = &tegra_audio_graph_ops;  in tegra_audio_graph_probe()
211 	priv->simple.force_dpcm = 1;  in tegra_audio_graph_probe()
213 	return audio_graph_parse_of(&priv->simple, dev);  in tegra_audio_graph_probe()
244 	{ .compatible = "nvidia,tegra210-audio-graph-card",
246 	{ .compatible = "nvidia,tegra186-audio-graph-card",
248 	{ .compatible = "nvidia,tegra264-audio-graph-card",
256 		.name = "tegra-audio-graph-card",
266 MODULE_DESCRIPTION("ASoC Tegra Audio Graph Sound Card");