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/* SPDX-License-Identifier: GPL-2.0-only */
#include <assert.h>
#include <console/console.h>
#include <delay.h>
#include <soc/mt6359p.h>
#include <soc/pmif.h>
#include <timer.h>
static const struct pmic_setting key_protect_setting[] = {
{0x3A8, 0x9CA6, 0xFFFF, 0},
{0x44A, 0xBADE, 0xFFFF, 0},
{0xA3A, 0x4729, 0xFFFF, 0},
{0xC58, 0x1605, 0xFFFF, 0},
{0xC5A, 0x1706, 0xFFFF, 0},
{0xC5C, 0x1807, 0xFFFF, 0},
{0xFB4, 0x6359, 0xFFFF, 0},
{0x1432, 0x5543, 0xFFFF, 0},
};
static const struct pmic_efuse efuse_setting[] = {
{79, 0xa0e, 0x1, 0xf},
{886, 0x198c, 0xf, 0x8},
{890, 0x198e, 0xf, 0x0},
{902, 0x1998, 0xf, 0x8},
{906, 0x1998, 0xf, 0xc},
{918, 0x19a2, 0xf, 0x8},
{922, 0x19a2, 0xf, 0xc},
{1014, 0x19ae, 0xf, 0x7},
{1018, 0x19ae, 0xf, 0xb},
{1158, 0x1a0a, 0xf, 0x7},
{1162, 0x1a0a, 0xf, 0xb},
{1206, 0x1a16, 0xf, 0x7},
{1210, 0x1a16, 0xf, 0xb},
{1254, 0x1a22, 0xf, 0x7},
{1258, 0x1a22, 0xf, 0xb},
{1304, 0x1a2c, 0x7, 0x4},
{1307, 0x1a32, 0x7, 0x8},
{1336, 0x1a34, 0x7, 0x4},
{1339, 0x1a3a, 0x7, 0x8},
{1683, 0x79c, 0xf, 0x4},
{1688, 0xc8a, 0x1, 0x3},
{1689, 0xc88, 0x1, 0x3},
{1690, 0xc88, 0x7, 0x0},
};
static struct pmif *pmif_arb = NULL;
static void mt6359p_write(u32 reg, u32 data)
{
pmif_arb->write(pmif_arb, 0, reg, data);
}
static u32 mt6359p_read_field(u32 reg, u32 mask, u32 shift)
{
return pmif_arb->read_field(pmif_arb, 0, reg, mask, shift);
}
void mt6359p_write_field(u32 reg, u32 val, u32 mask, u32 shift)
{
pmif_arb->write_field(pmif_arb, 0, reg, val, mask, shift);
}
static void pmic_set_power_hold(void)
{
mt6359p_write_field(PMIC_PWRHOLD, 0x1, 0x1, 0);
}
static void pmic_wdt_set(void)
{
/* [5]=1, RG_WDTRSTB_DEB */
mt6359p_write_field(PMIC_TOP_RST_MISC_SET, 0x20, 0xFFFF, 0);
/* [1]=0, RG_WDTRSTB_MODE */
mt6359p_write_field(PMIC_TOP_RST_MISC_CLR, 0x02, 0xFFFF, 0);
/* [0]=1, RG_WDTRSTB_EN */
mt6359p_write_field(PMIC_TOP_RST_MISC_SET, 0x01, 0xFFFF, 0);
}
static void pmic_protect_key_setting(bool lock)
{
for (int i = 0; i < ARRAY_SIZE(key_protect_setting); i++)
mt6359p_write(key_protect_setting[i].addr,
lock ? 0 : key_protect_setting[i].val);
}
static int check_idle(u32 timeout, u32 addr, u32 mask)
{
if (!wait_us(timeout, !mt6359p_read_field(addr, mask, 0)))
return -1;
return 0;
}
static u32 pmic_read_efuse(u32 efuse_bit, u32 mask)
{
u32 efuse_data;
int index, shift;
index = efuse_bit / 16;
shift = efuse_bit % 16;
mt6359p_write_field(PMIC_TOP_CKHWEN_CON0, 0, 0x1, 2);
mt6359p_write_field(PMIC_TOP_CKPDN_CON0, 0, 0x1, 4);
mt6359p_write_field(PMIC_OTP_CON11, 1, 0x1, 0);
mt6359p_write_field(PMIC_OTP_CON0, index * 2, 0xFF, 0);
if (mt6359p_read_field(PMIC_OTP_CON8, 1, 0))
mt6359p_write_field(PMIC_OTP_CON8, 0, 1, 0);
else
mt6359p_write_field(PMIC_OTP_CON8, 1, 1, 0);
udelay(300);
if (check_idle(EFUSE_WAIT_US, PMIC_OTP_CON13, EFUSE_BUSY))
die("[%s] timeout after %d usecs\n", __func__, EFUSE_WAIT_US);
udelay(100);
efuse_data = mt6359p_read_field(PMIC_OTP_CON12, 0xFFFF, 0);
efuse_data = (efuse_data >> shift) & mask;
mt6359p_write_field(PMIC_TOP_CKHWEN_CON0, 1, 0x1, 2);
mt6359p_write_field(PMIC_TOP_CKPDN_CON0, 1, 0x1, 4);
return efuse_data;
}
static void pmic_efuse_setting(void)
{
u32 efuse_data;
struct stopwatch sw;
stopwatch_init(&sw);
for (int i = 0; i < ARRAY_SIZE(efuse_setting); i++) {
efuse_data = pmic_read_efuse(efuse_setting[i].efuse_bit, efuse_setting[i].mask);
mt6359p_write_field(efuse_setting[i].addr, efuse_data,
efuse_setting[i].mask, efuse_setting[i].shift);
}
efuse_data = pmic_read_efuse(EFUSE_RG_VPA_OC_FT, 0x1);
if (efuse_data) {
/* restore VPA_DLC initial setting */
mt6359p_write(PMIC_BUCK_VPA_DLC_CON0, 0x2810);
mt6359p_write(PMIC_BUCK_VPA_DLC_CON1, 0x800);
}
printk(BIOS_DEBUG, "%s: Set efuses in %ld msecs\n",
__func__, stopwatch_duration_msecs(&sw));
}
static void pmic_wk_vs2_voter_setting(void)
{
/*
* 1. Set VS2_VOTER_VOSEL = 1.35V
* 2. Clear VS2_VOTER
* 3. Set VS2_VOSEL = 1.4V
*/
mt6359p_write_field(PMIC_VS2_VOTER_CFG, 0x2C, 0x7F, 0);
mt6359p_write_field(PMIC_VS2_VOTER, 0, 0xFFF, 0);
mt6359p_write_field(PMIC_VS2_ELR0, 0x30, 0x7F, 0);
}
void mt6359p_buck_set_voltage(u32 buck_id, u32 buck_uv)
{
u32 vol_offset, vol_reg, vol;
if (!pmif_arb)
die("ERROR: pmif_arb not initialized");
switch (buck_id) {
case MT6359P_GPU11:
vol_offset = 400000;
vol_reg = PMIC_VGPU11_ELR0;
break;
case MT6359P_SRAM_PROC1:
vol_offset = 500000;
vol_reg = PMIC_VSRAM_PROC1_ELR;
break;
case MT6359P_SRAM_PROC2:
vol_offset = 500000;
vol_reg = PMIC_VSRAM_PROC2_ELR;
break;
case MT6359P_CORE:
vol_offset = 506250;
vol_reg = PMIC_VCORE_ELR0;
break;
default:
die("ERROR: Unknown buck_id %u", buck_id);
return;
};
vol = (buck_uv - vol_offset) / 6250;
mt6359p_write_field(vol_reg, vol, 0x7F, 0);
}
u32 mt6359p_buck_get_voltage(u32 buck_id)
{
u32 vol_shift, vol_offset, vol_reg, vol;
if (!pmif_arb)
die("ERROR: pmif_arb not initialized");
switch (buck_id) {
case MT6359P_GPU11:
vol_shift = 0;
vol_offset = 400000;
vol_reg = PMIC_VGPU11_DBG0;
break;
case MT6359P_SRAM_PROC1:
vol_shift = 8;
vol_offset = 500000;
vol_reg = PMIC_VSRAM_PROC1_VOSEL1;
break;
case MT6359P_SRAM_PROC2:
vol_shift = 8;
vol_offset = 500000;
vol_reg = PMIC_VSRAM_PROC2_VOSEL1;
break;
case MT6359P_CORE:
vol_shift = 0;
vol_offset = 506250;
vol_reg = PMIC_VCORE_DBG0;
break;
default:
die("ERROR: Unknown buck_id %u", buck_id);
return 0;
};
vol = mt6359p_read_field(vol_reg, 0x7F, vol_shift);
return vol_offset + vol * 6250;
}
void mt6359p_set_vm18_voltage(u32 vm18_uv)
{
u32 reg_vol, reg_cali;
if (!pmif_arb)
die("ERROR: pmif_arb not initialized");
assert(vm18_uv >= 1700000);
assert(vm18_uv < 2000000);
reg_vol = (vm18_uv / 1000 - VM18_VOL_OFFSET) / 100;
reg_cali = ((vm18_uv / 1000) % 100) / 10;
mt6359p_write(PMIC_VM18_ANA_CON0, (reg_vol << VM18_VOL_REG_SHIFT) | reg_cali);
}
u32 mt6359p_get_vm18_voltage(void)
{
u32 reg_vol, reg_cali;
if (!pmif_arb)
die("ERROR: pmif_arb not initialized");
reg_vol = 100 * mt6359p_read_field(PMIC_VM18_ANA_CON0, 0xF, VM18_VOL_REG_SHIFT);
reg_cali = 10 * mt6359p_read_field(PMIC_VM18_ANA_CON0, 0xF, 0);
return 1000 * (VM18_VOL_OFFSET + reg_vol + reg_cali);
}
static void init_pmif_arb(void)
{
if (!pmif_arb) {
pmif_arb = get_pmif_controller(PMIF_SPI, 0);
if (!pmif_arb)
die("ERROR: No spi device");
}
if (pmif_arb->is_pmif_init_done(pmif_arb))
die("ERROR - Failed to initialize pmif spi");
}
void mt6359p_init(void)
{
init_pmif_arb();
pmic_set_power_hold();
pmic_wdt_set();
pmic_protect_key_setting(false);
pmic_init_setting();
pmic_lp_setting();
pmic_efuse_setting();
pmic_protect_key_setting(true);
pmic_wk_vs2_voter_setting();
}
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