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/*
* mt6797-afe-clk.c -- Mediatek 6797 afe clock ctrl
*
* Copyright (c) 2018 MediaTek Inc.
* Author: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk.h>
#include "mt6797-afe-common.h"
#include "mt6797-afe-clk.h"
enum {
CLK_INFRA_SYS_AUD,
CLK_INFRA_SYS_AUD_26M,
CLK_TOP_MUX_AUD,
CLK_TOP_MUX_AUD_BUS,
CLK_TOP_SYSPLL3_D4,
CLK_TOP_SYSPLL1_D4,
CLK_CLK26M,
CLK_NUM
};
static const char *aud_clks[CLK_NUM] = {
[CLK_INFRA_SYS_AUD] = "infra_sys_audio_clk",
[CLK_INFRA_SYS_AUD_26M] = "infra_sys_audio_26m",
[CLK_TOP_MUX_AUD] = "top_mux_audio",
[CLK_TOP_MUX_AUD_BUS] = "top_mux_aud_intbus",
[CLK_TOP_SYSPLL3_D4] = "top_sys_pll3_d4",
[CLK_TOP_SYSPLL1_D4] = "top_sys_pll1_d4",
[CLK_CLK26M] = "top_clk26m_clk",
};
int mt6797_init_clock(struct mtk_base_afe *afe)
{
struct mt6797_afe_private *afe_priv = afe->platform_priv;
int i;
afe_priv->clk = devm_kcalloc(afe->dev, CLK_NUM, sizeof(*afe_priv->clk),
GFP_KERNEL);
if (!afe_priv->clk)
return -ENOMEM;
for (i = 0; i < CLK_NUM; i++) {
afe_priv->clk[i] = devm_clk_get(afe->dev, aud_clks[i]);
if (IS_ERR(afe_priv->clk[i])) {
dev_err(afe->dev, "%s(), devm_clk_get %s fail, ret %ld\n",
__func__, aud_clks[i],
PTR_ERR(afe_priv->clk[i]));
return PTR_ERR(afe_priv->clk[i]);
}
}
return 0;
}
int mt6797_afe_enable_clock(struct mtk_base_afe *afe)
{
struct mt6797_afe_private *afe_priv = afe->platform_priv;
int ret;
ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_SYS_AUD]);
if (ret) {
dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
__func__, aud_clks[CLK_INFRA_SYS_AUD], ret);
goto CLK_INFRA_SYS_AUDIO_ERR;
}
ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
if (ret) {
dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
__func__, aud_clks[CLK_INFRA_SYS_AUD_26M], ret);
goto CLK_INFRA_SYS_AUD_26M_ERR;
}
ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD]);
if (ret) {
dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
__func__, aud_clks[CLK_TOP_MUX_AUD], ret);
goto CLK_MUX_AUDIO_ERR;
}
ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD],
afe_priv->clk[CLK_CLK26M]);
if (ret) {
dev_err(afe->dev, "%s(), clk_set_parent %s-%s fail %d\n",
__func__, aud_clks[CLK_TOP_MUX_AUD],
aud_clks[CLK_CLK26M], ret);
goto CLK_MUX_AUDIO_ERR;
}
ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
if (ret) {
dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
__func__, aud_clks[CLK_TOP_MUX_AUD_BUS], ret);
goto CLK_MUX_AUDIO_INTBUS_ERR;
}
return ret;
CLK_MUX_AUDIO_INTBUS_ERR:
clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
CLK_MUX_AUDIO_ERR:
clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD]);
CLK_INFRA_SYS_AUD_26M_ERR:
clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
CLK_INFRA_SYS_AUDIO_ERR:
clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD]);
return 0;
}
int mt6797_afe_disable_clock(struct mtk_base_afe *afe)
{
struct mt6797_afe_private *afe_priv = afe->platform_priv;
clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD]);
clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD]);
return 0;
}
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