140 lines
2.7 KiB
C
140 lines
2.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/clk.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/arm-smccc.h>
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#include <linux/soc/mediatek/mtk_sip_svc.h>
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#include <mtu3.h>
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#include <mtu3_hal.h>
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#include <mtk_idle.h>
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#include "mtu3_priv.h"
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int get_ssusb_ext_rscs(struct ssusb_mtk *ssusb)
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{
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struct device *dev = ssusb->dev;
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struct ssusb_priv *priv;
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/* all elements are set to ZERO as default value */
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->vusb10 = devm_regulator_get(dev, "va09");
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if (IS_ERR(priv->vusb10)) {
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dev_info(dev, "failed to get vusb10\n");
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return PTR_ERR(priv->vusb10);
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}
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/* private mode setting */
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ssusb->force_vbus = true;
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ssusb->u1u2_disable = true;
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ssusb->u3_loopb_support = true;
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ssusb->priv_data = priv;
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return 0;
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}
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static int ssusb_host_clk_on(struct ssusb_mtk *ssusb)
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{
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return 0;
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}
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static int ssusb_host_clk_off(struct ssusb_mtk *ssusb)
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{
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return 0;
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}
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static int ssusb_sysclk_on(struct ssusb_mtk *ssusb)
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{
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int ret = 0;
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ret = clk_prepare_enable(ssusb->sys_clk);
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if (ret)
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dev_info(ssusb->dev, "failed to enable sys_clk\n");
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ret = clk_prepare_enable(ssusb->ref_clk);
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if (ret)
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dev_info(ssusb->dev, "failed to enable ref_clk\n");
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return ret;
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}
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static void ssusb_sysclk_off(struct ssusb_mtk *ssusb)
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{
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clk_disable_unprepare(ssusb->sys_clk);
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clk_disable_unprepare(ssusb->ref_clk);
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}
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int ssusb_clk_on(struct ssusb_mtk *ssusb, int host_mode)
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{
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if (host_mode) {
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ssusb_sysclk_on(ssusb);
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ssusb_host_clk_on(ssusb);
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} else {
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ssusb_sysclk_on(ssusb);
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}
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return 0;
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}
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int ssusb_clk_off(struct ssusb_mtk *ssusb, int host_mode)
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{
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if (host_mode) {
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ssusb_host_clk_off(ssusb);
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ssusb_sysclk_off(ssusb);
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} else {
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ssusb_sysclk_off(ssusb);
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}
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return 0;
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}
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int ssusb_ext_pwr_on(struct ssusb_mtk *ssusb, int mode)
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{
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int ret = 0;
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struct ssusb_priv *priv;
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priv = ssusb->priv_data;
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ret = regulator_enable(priv->vusb10);
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if (ret)
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dev_info(ssusb->dev, "failed to enable vusb10\n");
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return ret;
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}
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int ssusb_ext_pwr_off(struct ssusb_mtk *ssusb, int mode)
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{
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int ret = 0;
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struct ssusb_priv *priv;
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priv = ssusb->priv_data;
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ret = regulator_disable(priv->vusb10);
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if (ret)
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dev_info(ssusb->dev, "failed to disable vusb10\n");
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return ret;
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}
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void ssusb_dpidle_request(int mode)
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{
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struct arm_smccc_res res;
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int op;
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switch (mode) {
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case USB_DPIDLE_SUSPEND:
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op = MTK_USB_SMC_INFRA_REQUEST;
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break;
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case USB_DPIDLE_RESUME:
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op = MTK_USB_SMC_INFRA_RELEASE;
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break;
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default:
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return;
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}
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pr_info("%s operation = %d\n", __func__, op);
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arm_smccc_smc(MTK_SIP_USB_CONTROL, op, 0, 0, 0, 0, 0, 0, &res);
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}
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