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/*
* board/amlogic/gxtvbb_p300_v1/firmware/power.c
*
* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <serial.h>
//#include <stdio.h>
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static int pwm_voltage_table[][2] = {
{ 0x180004, 900},
{ 0x170005, 910},
{ 0x160006, 920},
{ 0x150007, 930},
{ 0x140008, 940},
{ 0x130009, 950},
{ 0x12000a, 960},
{ 0x11000b, 970},
{ 0x10000c, 980},
{ 0x0f000d, 990},
{ 0x0e000e, 1000},
{ 0x0d000f, 1010},
{ 0x0c0010, 1020},
{ 0x0b0011, 1030},
{ 0x0a0012, 1040},
{ 0x090013, 1050},
{ 0x080014, 1060},
{ 0x070015, 1070},
{ 0x060016, 1080},
{ 0x050017, 1090},
{ 0x040018, 1100},
{ 0x030019, 1110},
{ 0x02001a, 1120},
{ 0x01001b, 1130},
{ 0x00001c, 1140},
};
#define P_PIN_MUX_AO (*((volatile unsigned *)(0xc8100000 + (0x05 << 2))))
#define P_PIN_MUX_REG10 (*((volatile unsigned *)(0xda834400 + (0x36 << 2))))
#define P_PWM_MISC_REG_AB (*((volatile unsigned *)(0xc1100000 + (0x2156 << 2))))
#define P_PWM_PWM_A (*((volatile unsigned *)(0xc1100000 + (0x2154 << 2))))
#define P_PWM_MISC_REG_EF (*((volatile unsigned *)(0xc1100000 + (0x21b2 << 2))))
#define P_PWM_PWM_F (*((volatile unsigned *)(0xc1100000 + (0x21b1 << 2))))
#ifdef P_AO_PWM_MISC_REG_AB
#undef P_AO_PWM_MISC_REG_AB
#endif
#define P_AO_PWM_MISC_REG_AB (*((volatile unsigned *)(0xc8100400 + (0x56 << 2))))
#ifdef P_AO_PWM_PWM_B
#undef P_AO_PWM_PWM_B
#endif
#define P_AO_PWM_PWM_B (*((volatile unsigned *)(0xc8100400 + (0x55 << 2))))
enum pwm_id {
pwm_a = 0,
pwm_b,
pwm_c,
pwm_d,
pwm_e,
pwm_f,
pwm_ao_a,
pwm_ao_b,
};
void pwm_init(int id)
{
unsigned int reg;
/*
* TODO: support more pwm controllers, right now only support
* PWM_A, PWM_AO_B,PWM_F
*/
switch (id) {
case pwm_a:
reg = P_PWM_MISC_REG_AB;
reg &= ~(0x7f << 8);
reg |= ((1 << 15) | (1 << 0));
P_PWM_MISC_REG_AB = reg;
/*
* default set to max voltage
*/
//P_PWM_PWM_A = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0];
reg = P_PIN_MUX_REG10;
reg &= ~((1 << 12)|(1<<14)|(1<<22));
P_PIN_MUX_REG10 = reg;
reg = P_PIN_MUX_REG10;
reg |= (1 << 21); // enable PWM_A
P_PIN_MUX_REG10 = reg;
break;
case pwm_ao_b:
reg = P_AO_PWM_MISC_REG_AB;
reg &= ~(0x7f << 16);
reg |= ((1 << 23) | (1 << 1)|(1<<0));
P_AO_PWM_MISC_REG_AB = reg;
/*
* default set to max voltage
*/
//P_AO_PWM_PWM_B = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0];
reg = P_PIN_MUX_AO;
reg &= ~(1 << 22);
P_PIN_MUX_AO = reg;
reg = P_PIN_MUX_AO;
reg |= (1 << 21); // enable PWM_AO_B
P_PIN_MUX_AO = reg;
break;
case pwm_f:
reg = P_PWM_MISC_REG_EF;
reg &= ~(0x7f << 16);
reg |= ((1 << 23) | (1 << 1) |(1 << 0));
P_PWM_MISC_REG_EF = reg;
/*
* default set to max voltage
*/
P_PWM_PWM_F = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0];
reg = P_PIN_MUX_AO;
reg &= ~(1 << 21);
P_PIN_MUX_AO = reg;
reg = P_PIN_MUX_AO;
reg |= (1 << 22); // enable PWM_f
P_PIN_MUX_AO = reg;
break;
default:
break;
}
_udelay(200);
}
void pwm_set_voltage(unsigned int id, unsigned int voltage)
{
int to;
for (to = 0; to < ARRAY_SIZE(pwm_voltage_table); to++) {
if (pwm_voltage_table[to][1] >= voltage) {
break;
}
}
if (to >= ARRAY_SIZE(pwm_voltage_table)) {
to = ARRAY_SIZE(pwm_voltage_table) - 1;
}
//serial_put_dec( pwm_voltage_table[to][1]);
//serial_puts(" mv\n");
//serial_put_dec( pwm_voltage_table[to][0]);
//serial_puts(" mv\n");
switch (id) {
case pwm_a:
P_PWM_PWM_A = pwm_voltage_table[to][0];
break;
case pwm_ao_b:
P_AO_PWM_PWM_B = pwm_voltage_table[to][0];
break;
case pwm_f:
P_PWM_PWM_F = pwm_voltage_table[to][0];
break;
default:
break;
}
_udelay(200);
}
void power_init(int mode)
{
unsigned int reg;
serial_puts("set vcck to ");
serial_put_dec(CONFIG_VCCK_INIT_VOLTAGE);
serial_puts(" mv\n");
pwm_set_voltage(pwm_a, CONFIG_VCCK_INIT_VOLTAGE);
serial_puts("set vddee to ");
serial_put_dec(CONFIG_VDDEE_INIT_VOLTAGE);
serial_puts(" mv\n");
pwm_set_voltage(pwm_ao_b, CONFIG_VDDEE_INIT_VOLTAGE);
pwm_init(pwm_a);
pwm_init(pwm_ao_b);
serial_puts("set vddee enable AO_8 to low\n ");
reg = readl(AO_GPIO_O_EN_N);
reg &= ~((1 << 8)|(1 << 24));
writel(reg, AO_GPIO_O_EN_N);
serial_puts("set vddee enable AO_2 to low\n ");
reg = readl(AO_GPIO_O_EN_N);
reg &= ~((1 << 2)|(1 << 18));
writel(reg, AO_GPIO_O_EN_N);
}