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/*
* Copyright 2020 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include "core_types.h"
#include "clk_mgr_internal.h"
#include "reg_helper.h"
#include <linux/delay.h>
#include "dcn301_smu.h"
#include "vangogh_ip_offset.h"
#include "mp/mp_11_5_0_offset.h"
#include "mp/mp_11_5_0_sh_mask.h"
#define REG(reg_name) \
(MP0_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name)
#define FN(reg_name, field) \
FD(reg_name##__##field)
#define VBIOSSMC_MSG_GetSmuVersion 0x2
#define VBIOSSMC_MSG_SetDispclkFreq 0x4
#define VBIOSSMC_MSG_SetDprefclkFreq 0x5
#define VBIOSSMC_MSG_SetDppclkFreq 0x6
#define VBIOSSMC_MSG_SetHardMinDcfclkByFreq 0x7
#define VBIOSSMC_MSG_SetMinDeepSleepDcfclk 0x8
//#define VBIOSSMC_MSG_SetPhyclkVoltageByFreq 0xA
#define VBIOSSMC_MSG_GetFclkFrequency 0xA
//#define VBIOSSMC_MSG_SetDisplayCount 0xC
//#define VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown 0xD
#define VBIOSSMC_MSG_UpdatePmeRestore 0xD
#define VBIOSSMC_MSG_SetVbiosDramAddrHigh 0xE //Used for WM table txfr
#define VBIOSSMC_MSG_SetVbiosDramAddrLow 0xF
#define VBIOSSMC_MSG_TransferTableSmu2Dram 0x10
#define VBIOSSMC_MSG_TransferTableDram2Smu 0x11
#define VBIOSSMC_MSG_SetDisplayIdleOptimizations 0x12
#define VBIOSSMC_Status_BUSY 0x0
#define VBIOSSMC_Result_OK 0x1
#define VBIOSSMC_Result_Failed 0xFF
#define VBIOSSMC_Result_UnknownCmd 0xFE
#define VBIOSSMC_Result_CmdRejectedPrereq 0xFD
#define VBIOSSMC_Result_CmdRejectedBusy 0xFC
/*
* Function to be used instead of REG_WAIT macro because the wait ends when
* the register is NOT EQUAL to zero, and because the translation in msg_if.h
* won't work with REG_WAIT.
*/
static uint32_t dcn301_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries)
{
uint32_t res_val = VBIOSSMC_Status_BUSY;
do {
res_val = REG_READ(MP1_SMN_C2PMSG_91);
if (res_val != VBIOSSMC_Status_BUSY)
break;
if (delay_us >= 1000)
msleep(delay_us/1000);
else if (delay_us > 0)
udelay(delay_us);
} while (max_retries--);
return res_val;
}
int dcn301_smu_send_msg_with_param(
struct clk_mgr_internal *clk_mgr,
unsigned int msg_id, unsigned int param)
{
uint32_t result;
/* First clear response register */
REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY);
/* Set the parameter register for the SMU message, unit is Mhz */
REG_WRITE(MP1_SMN_C2PMSG_83, param);
/* Trigger the message transaction by writing the message ID */
REG_WRITE(MP1_SMN_C2PMSG_67, msg_id);
result = dcn301_smu_wait_for_response(clk_mgr, 10, 1000);
ASSERT(result == VBIOSSMC_Result_OK);
/* Actual dispclk set is returned in the parameter register */
return REG_READ(MP1_SMN_C2PMSG_83);
}
int dcn301_smu_get_smu_version(struct clk_mgr_internal *clk_mgr)
{
return dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_GetSmuVersion,
0);
}
int dcn301_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz)
{
int actual_dispclk_set_mhz = -1;
/* Unit of SMU msg parameter is Mhz */
actual_dispclk_set_mhz = dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDispclkFreq,
requested_dispclk_khz / 1000);
return actual_dispclk_set_mhz * 1000;
}
int dcn301_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr)
{
int actual_dprefclk_set_mhz = -1;
actual_dprefclk_set_mhz = dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDprefclkFreq,
clk_mgr->base.dprefclk_khz / 1000);
/* TODO: add code for programing DP DTO, currently this is down by command table */
return actual_dprefclk_set_mhz * 1000;
}
int dcn301_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz)
{
int actual_dcfclk_set_mhz = -1;
actual_dcfclk_set_mhz = dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
requested_dcfclk_khz / 1000);
return actual_dcfclk_set_mhz * 1000;
}
int dcn301_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz)
{
int actual_min_ds_dcfclk_mhz = -1;
actual_min_ds_dcfclk_mhz = dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetMinDeepSleepDcfclk,
requested_min_ds_dcfclk_khz / 1000);
return actual_min_ds_dcfclk_mhz * 1000;
}
int dcn301_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz)
{
int actual_dppclk_set_mhz = -1;
actual_dppclk_set_mhz = dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDppclkFreq,
requested_dpp_khz / 1000);
return actual_dppclk_set_mhz * 1000;
}
void dcn301_smu_set_display_idle_optimization(struct clk_mgr_internal *clk_mgr, uint32_t idle_info)
{
//TODO: Work with smu team to define optimization options.
dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDisplayIdleOptimizations,
idle_info);
}
void dcn301_smu_enable_phy_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable)
{
union display_idle_optimization_u idle_info = { 0 };
if (enable) {
idle_info.idle_info.df_request_disabled = 1;
idle_info.idle_info.phy_ref_clk_off = 1;
}
dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDisplayIdleOptimizations,
idle_info.data);
}
void dcn301_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr)
{
dcn301_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_UpdatePmeRestore,
0);
}
void dcn301_smu_set_dram_addr_high(struct clk_mgr_internal *clk_mgr, uint32_t addr_high)
{
dcn301_smu_send_msg_with_param(clk_mgr,
VBIOSSMC_MSG_SetVbiosDramAddrHigh, addr_high);
}
void dcn301_smu_set_dram_addr_low(struct clk_mgr_internal *clk_mgr, uint32_t addr_low)
{
dcn301_smu_send_msg_with_param(clk_mgr,
VBIOSSMC_MSG_SetVbiosDramAddrLow, addr_low);
}
void dcn301_smu_transfer_dpm_table_smu_2_dram(struct clk_mgr_internal *clk_mgr)
{
dcn301_smu_send_msg_with_param(clk_mgr,
VBIOSSMC_MSG_TransferTableSmu2Dram, TABLE_DPMCLOCKS);
}
void dcn301_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr)
{
dcn301_smu_send_msg_with_param(clk_mgr,
VBIOSSMC_MSG_TransferTableDram2Smu, TABLE_WATERMARKS);
}
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