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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // Copyright(c) 2021 Mediatek Corporation. All rights reserved. // // Author: YC Hung <yc.hung@mediatek.com> // // Hardware interface for mt8195 DSP clock #include <linux/clk.h> #include <linux/io.h> #include "mt8195.h" #include "mt8195-clk.h" #include "../adsp_helper.h" #include "../../sof-audio.h" static const char *adsp_clks[ADSP_CLK_MAX] = { [CLK_TOP_ADSP] = "adsp_sel", [CLK_TOP_CLK26M] = "clk26m_ck", [CLK_TOP_AUDIO_LOCAL_BUS] = "audio_local_bus", [CLK_TOP_MAINPLL_D7_D2] = "mainpll_d7_d2", [CLK_SCP_ADSP_AUDIODSP] = "scp_adsp_audiodsp", [CLK_TOP_AUDIO_H] = "audio_h", }; int mt8195_adsp_init_clock(struct snd_sof_dev *sdev) { struct device *dev = sdev->dev; struct adsp_priv *priv = sdev->pdata->hw_pdata; int i; priv->clk = devm_kcalloc(dev, ADSP_CLK_MAX, sizeof(*priv->clk), GFP_KERNEL); if (!priv->clk) return -ENOMEM; for (i = 0; i < ADSP_CLK_MAX; i++) { priv->clk[i] = devm_clk_get(dev, adsp_clks[i]); if (IS_ERR(priv->clk[i])) return PTR_ERR(priv->clk[i]); } return 0; } static int adsp_enable_all_clock(struct snd_sof_dev *sdev) { struct device *dev = sdev->dev; struct adsp_priv *priv = sdev->pdata->hw_pdata; int ret; ret = clk_prepare_enable(priv->clk[CLK_TOP_MAINPLL_D7_D2]); if (ret) { dev_err(dev, "%s clk_prepare_enable(mainpll_d7_d2) fail %d\n", __func__, ret); return ret; } ret = clk_prepare_enable(priv->clk[CLK_TOP_ADSP]); if (ret) { dev_err(dev, "%s clk_prepare_enable(adsp_sel) fail %d\n", __func__, ret); goto disable_mainpll_d7_d2_clk; } ret = clk_prepare_enable(priv->clk[CLK_TOP_AUDIO_LOCAL_BUS]); if (ret) { dev_err(dev, "%s clk_prepare_enable(audio_local_bus) fail %d\n", __func__, ret); goto disable_dsp_sel_clk; } ret = clk_prepare_enable(priv->clk[CLK_SCP_ADSP_AUDIODSP]); if (ret) { dev_err(dev, "%s clk_prepare_enable(scp_adsp_audiodsp) fail %d\n", __func__, ret); goto disable_audio_local_bus_clk; } ret = clk_prepare_enable(priv->clk[CLK_TOP_AUDIO_H]); if (ret) { dev_err(dev, "%s clk_prepare_enable(audio_h) fail %d\n", __func__, ret); goto disable_scp_adsp_audiodsp_clk; } return 0; disable_scp_adsp_audiodsp_clk: clk_disable_unprepare(priv->clk[CLK_SCP_ADSP_AUDIODSP]); disable_audio_local_bus_clk: clk_disable_unprepare(priv->clk[CLK_TOP_AUDIO_LOCAL_BUS]); disable_dsp_sel_clk: clk_disable_unprepare(priv->clk[CLK_TOP_ADSP]); disable_mainpll_d7_d2_clk: clk_disable_unprepare(priv->clk[CLK_TOP_MAINPLL_D7_D2]); return ret; } static void adsp_disable_all_clock(struct snd_sof_dev *sdev) { struct adsp_priv *priv = sdev->pdata->hw_pdata; clk_disable_unprepare(priv->clk[CLK_TOP_AUDIO_H]); clk_disable_unprepare(priv->clk[CLK_SCP_ADSP_AUDIODSP]); clk_disable_unprepare(priv->clk[CLK_TOP_AUDIO_LOCAL_BUS]); clk_disable_unprepare(priv->clk[CLK_TOP_ADSP]); clk_disable_unprepare(priv->clk[CLK_TOP_MAINPLL_D7_D2]); } static int adsp_default_clk_init(struct snd_sof_dev *sdev, bool enable) { struct device *dev = sdev->dev; struct adsp_priv *priv = sdev->pdata->hw_pdata; int ret; dev_dbg(dev, "%s: %s\n", __func__, enable ? "on" : "off"); if (enable) { ret = clk_set_parent(priv->clk[CLK_TOP_ADSP], priv->clk[CLK_TOP_CLK26M]); if (ret) { dev_err(dev, "failed to set dsp_sel to clk26m: %d\n", ret); return ret; } ret = clk_set_parent(priv->clk[CLK_TOP_AUDIO_LOCAL_BUS], priv->clk[CLK_TOP_MAINPLL_D7_D2]); if (ret) { dev_err(dev, "set audio_local_bus failed %d\n", ret); return ret; } ret = clk_set_parent(priv->clk[CLK_TOP_AUDIO_H], priv->clk[CLK_TOP_CLK26M]); if (ret) { dev_err(dev, "set audio_h_sel failed %d\n", ret); return ret; } ret = adsp_enable_all_clock(sdev); if (ret) { dev_err(dev, "failed to adsp_enable_clock: %d\n", ret); return ret; } } else { adsp_disable_all_clock(sdev); } return 0; } int adsp_clock_on(struct snd_sof_dev *sdev) { /* Open ADSP clock */ return adsp_default_clk_init(sdev, 1); } int adsp_clock_off(struct snd_sof_dev *sdev) { /* Close ADSP clock */ return adsp_default_clk_init(sdev, 0); } |