1 // SPDX-License-Identifier: GPL-2.0
3 * mt2701-afe-clock-ctrl.c -- Mediatek 2701 afe clock ctrl
5 * Copyright (c) 2016 MediaTek Inc.
6 * Author: Garlic Tseng <garlic.tseng@mediatek.com>
7 * Ryder Lee <ryder.lee@mediatek.com>
10 #include "mt2701-afe-common.h"
11 #include "mt2701-afe-clock-ctrl.h"
13 static const char *const base_clks[] = {
14 [MT2701_INFRA_SYS_AUDIO] = "infra_sys_audio_clk",
15 [MT2701_TOP_AUD_MCLK_SRC0] = "top_audio_mux1_sel",
16 [MT2701_TOP_AUD_MCLK_SRC1] = "top_audio_mux2_sel",
17 [MT2701_TOP_AUD_A1SYS] = "top_audio_a1sys_hp",
18 [MT2701_TOP_AUD_A2SYS] = "top_audio_a2sys_hp",
19 [MT2701_AUDSYS_AFE] = "audio_afe_pd",
20 [MT2701_AUDSYS_AFE_CONN] = "audio_afe_conn_pd",
21 [MT2701_AUDSYS_A1SYS] = "audio_a1sys_pd",
22 [MT2701_AUDSYS_A2SYS] = "audio_a2sys_pd",
25 int mt2701_init_clock(struct mtk_base_afe *afe)
27 struct mt2701_afe_private *afe_priv = afe->platform_priv;
30 for (i = 0; i < MT2701_BASE_CLK_NUM; i++) {
31 afe_priv->base_ck[i] = devm_clk_get(afe->dev, base_clks[i]);
32 if (IS_ERR(afe_priv->base_ck[i])) {
33 dev_err(afe->dev, "failed to get %s\n", base_clks[i]);
34 return PTR_ERR(afe_priv->base_ck[i]);
38 /* Get I2S related clocks */
39 for (i = 0; i < afe_priv->soc->i2s_num; i++) {
40 struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[i];
44 snprintf(name, sizeof(name), "i2s%d_src_sel", i);
45 i2s_path->sel_ck = devm_clk_get(afe->dev, name);
46 if (IS_ERR(i2s_path->sel_ck)) {
47 dev_err(afe->dev, "failed to get %s\n", name);
48 return PTR_ERR(i2s_path->sel_ck);
51 snprintf(name, sizeof(name), "i2s%d_src_div", i);
52 i2s_path->div_ck = devm_clk_get(afe->dev, name);
53 if (IS_ERR(i2s_path->div_ck)) {
54 dev_err(afe->dev, "failed to get %s\n", name);
55 return PTR_ERR(i2s_path->div_ck);
58 snprintf(name, sizeof(name), "i2s%d_mclk_en", i);
59 i2s_path->mclk_ck = devm_clk_get(afe->dev, name);
60 if (IS_ERR(i2s_path->mclk_ck)) {
61 dev_err(afe->dev, "failed to get %s\n", name);
62 return PTR_ERR(i2s_path->mclk_ck);
65 snprintf(name, sizeof(name), "i2so%d_hop_ck", i);
66 i2s_ck = devm_clk_get(afe->dev, name);
68 dev_err(afe->dev, "failed to get %s\n", name);
69 return PTR_ERR(i2s_ck);
71 i2s_path->hop_ck[SNDRV_PCM_STREAM_PLAYBACK] = i2s_ck;
73 snprintf(name, sizeof(name), "i2si%d_hop_ck", i);
74 i2s_ck = devm_clk_get(afe->dev, name);
76 dev_err(afe->dev, "failed to get %s\n", name);
77 return PTR_ERR(i2s_ck);
79 i2s_path->hop_ck[SNDRV_PCM_STREAM_CAPTURE] = i2s_ck;
81 snprintf(name, sizeof(name), "asrc%d_out_ck", i);
82 i2s_path->asrco_ck = devm_clk_get(afe->dev, name);
83 if (IS_ERR(i2s_path->asrco_ck)) {
84 dev_err(afe->dev, "failed to get %s\n", name);
85 return PTR_ERR(i2s_path->asrco_ck);
89 /* Some platforms may support BT path */
90 afe_priv->mrgif_ck = devm_clk_get(afe->dev, "audio_mrgif_pd");
91 if (IS_ERR(afe_priv->mrgif_ck)) {
92 if (PTR_ERR(afe_priv->mrgif_ck) == -EPROBE_DEFER)
95 afe_priv->mrgif_ck = NULL;
101 int mt2701_afe_enable_i2s(struct mtk_base_afe *afe,
102 struct mt2701_i2s_path *i2s_path,
107 ret = clk_prepare_enable(i2s_path->asrco_ck);
109 dev_err(afe->dev, "failed to enable ASRC clock %d\n", ret);
113 ret = clk_prepare_enable(i2s_path->hop_ck[dir]);
115 dev_err(afe->dev, "failed to enable I2S clock %d\n", ret);
122 clk_disable_unprepare(i2s_path->asrco_ck);
127 void mt2701_afe_disable_i2s(struct mtk_base_afe *afe,
128 struct mt2701_i2s_path *i2s_path,
131 clk_disable_unprepare(i2s_path->hop_ck[dir]);
132 clk_disable_unprepare(i2s_path->asrco_ck);
135 int mt2701_afe_enable_mclk(struct mtk_base_afe *afe, int id)
137 struct mt2701_afe_private *afe_priv = afe->platform_priv;
138 struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[id];
140 return clk_prepare_enable(i2s_path->mclk_ck);
143 void mt2701_afe_disable_mclk(struct mtk_base_afe *afe, int id)
145 struct mt2701_afe_private *afe_priv = afe->platform_priv;
146 struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[id];
148 clk_disable_unprepare(i2s_path->mclk_ck);
151 int mt2701_enable_btmrg_clk(struct mtk_base_afe *afe)
153 struct mt2701_afe_private *afe_priv = afe->platform_priv;
155 return clk_prepare_enable(afe_priv->mrgif_ck);
158 void mt2701_disable_btmrg_clk(struct mtk_base_afe *afe)
160 struct mt2701_afe_private *afe_priv = afe->platform_priv;
162 clk_disable_unprepare(afe_priv->mrgif_ck);
165 static int mt2701_afe_enable_audsys(struct mtk_base_afe *afe)
167 struct mt2701_afe_private *afe_priv = afe->platform_priv;
170 /* Enable infra clock gate */
171 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
175 /* Enable top a1sys clock gate */
176 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
180 /* Enable top a2sys clock gate */
181 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
185 /* Internal clock gates */
186 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
190 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
192 goto err_audio_a1sys;
194 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
196 goto err_audio_a2sys;
198 ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_AFE_CONN]);
205 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
207 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
209 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
211 clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
213 clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
215 clk_disable_unprepare(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
220 static void mt2701_afe_disable_audsys(struct mtk_base_afe *afe)
222 struct mt2701_afe_private *afe_priv = afe->platform_priv;
224 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE_CONN]);
225 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
226 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
227 clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
228 clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
229 clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
230 clk_disable_unprepare(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
233 int mt2701_afe_enable_clock(struct mtk_base_afe *afe)
237 /* Enable audio system */
238 ret = mt2701_afe_enable_audsys(afe);
240 dev_err(afe->dev, "failed to enable audio system %d\n", ret);
244 regmap_update_bits(afe->regmap, ASYS_TOP_CON,
245 ASYS_TOP_CON_ASYS_TIMING_ON,
246 ASYS_TOP_CON_ASYS_TIMING_ON);
247 regmap_update_bits(afe->regmap, AFE_DAC_CON0,
249 AFE_DAC_CON0_AFE_ON);
252 regmap_write(afe->regmap, PWR1_ASM_CON1, PWR1_ASM_CON1_INIT_VAL);
253 regmap_write(afe->regmap, PWR2_ASM_CON1, PWR2_ASM_CON1_INIT_VAL);
258 int mt2701_afe_disable_clock(struct mtk_base_afe *afe)
260 regmap_update_bits(afe->regmap, ASYS_TOP_CON,
261 ASYS_TOP_CON_ASYS_TIMING_ON, 0);
262 regmap_update_bits(afe->regmap, AFE_DAC_CON0,
263 AFE_DAC_CON0_AFE_ON, 0);
265 mt2701_afe_disable_audsys(afe);
270 int mt2701_mclk_configuration(struct mtk_base_afe *afe, int id)
273 struct mt2701_afe_private *priv = afe->platform_priv;
274 struct mt2701_i2s_path *i2s_path = &priv->i2s_path[id];
277 /* Set mclk source */
278 if (!(MT2701_PLL_DOMAIN_0_RATE % i2s_path->mclk_rate))
279 ret = clk_set_parent(i2s_path->sel_ck,
280 priv->base_ck[MT2701_TOP_AUD_MCLK_SRC0]);
281 else if (!(MT2701_PLL_DOMAIN_1_RATE % i2s_path->mclk_rate))
282 ret = clk_set_parent(i2s_path->sel_ck,
283 priv->base_ck[MT2701_TOP_AUD_MCLK_SRC1]);
286 dev_err(afe->dev, "failed to set mclk source\n");
290 /* Set mclk divider */
291 ret = clk_set_rate(i2s_path->div_ck, i2s_path->mclk_rate);
293 dev_err(afe->dev, "failed to set mclk divider %d\n", ret);