123 lines
2.7 KiB
C
123 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/io.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include "dvfsrc.h"
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#include <sspm_ipi.h>
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#include <sspm_ipi_pin.h>
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enum {
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IPI_DVFSRC_ENABLE,
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IPI_OPP_TABLE,
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IPI_VCORE_OPP,
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IPI_DDR_OPP,
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};
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struct dvfsrc_ipi_data {
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unsigned int cmd;
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union {
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struct {
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unsigned int dvfsrc_en;
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} dvfsrc_enable;
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struct {
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unsigned int vcore_dvfs_opp;
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unsigned int vcore_uv;
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unsigned int ddr_khz;
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} opp_table;
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struct {
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unsigned int vcore_dvfs_opp;
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unsigned int vcore_opp;
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} vcore_opp;
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struct {
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unsigned int vcore_dvfs_opp;
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unsigned int ddr_opp;
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} ddr_opp;
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} u;
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};
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static const int mt6761_qos_ipi_pin[] = {
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[IPI_DVFSRC_ENABLE] = 0,
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[IPI_OPP_TABLE] = 1,
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[IPI_VCORE_OPP] = 2,
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[IPI_DDR_OPP] = 3,
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};
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static const int mt6779_qos_ipi_pin[] = {
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[IPI_DVFSRC_ENABLE] = 1,
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[IPI_OPP_TABLE] = 2,
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[IPI_VCORE_OPP] = 3,
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[IPI_DDR_OPP] = 4,
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};
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static int mt6779_qos_ipi_to_sspm(void *buffer, int slot)
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{
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#if IS_ENABLED(CONFIG_MTK_TINYSYS_SSPM_SUPPORT)
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int ack_data = 0;
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return sspm_ipi_send_sync(IPI_ID_QOS, IPI_OPT_POLLING,
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buffer, slot, &ack_data, 1);
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#else
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return 0;
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#endif
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}
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static int mt6779_qos_dvfsrc_init(struct mtk_dvfsrc_up *dvfsrc)
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{
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int i;
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const int *ipi_pin;
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struct dvfsrc_opp_desc *opp_desc;
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struct dvfsrc_opp *opp;
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struct dvfsrc_ipi_data ipi_d;
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unsigned int opp_idx, v_opp_idx, d_opp_idx;
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ipi_pin = dvfsrc->dvd->qos->ipi_pin;
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opp_desc = dvfsrc->opp_desc;
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for (i = 0; i < dvfsrc->opp_desc->num_opp; i++) {
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opp = &opp_desc->opps[i];
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opp_idx = opp_desc->num_opp - (i + 1);
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v_opp_idx = opp_desc->num_vcore_opp - (opp->vcore_opp + 1);
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d_opp_idx = opp_desc->num_dram_opp - (opp->dram_opp + 1);
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ipi_d.cmd = ipi_pin[IPI_VCORE_OPP];
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ipi_d.u.vcore_opp.vcore_dvfs_opp = opp_idx;
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ipi_d.u.vcore_opp.vcore_opp = v_opp_idx;
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mt6779_qos_ipi_to_sspm(&ipi_d, 3);
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ipi_d.cmd = ipi_pin[IPI_DDR_OPP];
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ipi_d.u.ddr_opp.vcore_dvfs_opp = opp_idx;
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ipi_d.u.ddr_opp.ddr_opp = d_opp_idx;
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mt6779_qos_ipi_to_sspm(&ipi_d, 3);
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ipi_d.cmd = ipi_pin[IPI_OPP_TABLE];
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ipi_d.u.opp_table.vcore_dvfs_opp = opp_idx;
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ipi_d.u.opp_table.vcore_uv = opp->vcore_uv;
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ipi_d.u.opp_table.ddr_khz = opp->dram_khz;
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mt6779_qos_ipi_to_sspm(&ipi_d, 4);
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}
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ipi_d.cmd = ipi_pin[IPI_DVFSRC_ENABLE];
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ipi_d.u.dvfsrc_enable.dvfsrc_en = 1;
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mt6779_qos_ipi_to_sspm(&ipi_d, 2);
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return 0;
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}
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const struct dvfsrc_qos_config mt6779_qos_config = {
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.ipi_pin = mt6779_qos_ipi_pin,
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.qos_dvfsrc_init = mt6779_qos_dvfsrc_init,
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};
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const struct dvfsrc_qos_config mt6761_qos_config = {
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.ipi_pin = mt6761_qos_ipi_pin,
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.qos_dvfsrc_init = mt6779_qos_dvfsrc_init,
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};
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