| |
| /* |
| * board/amlogic/gxb_p200_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] = { |
| { 0x1c0000, 860}, |
| { 0x1b0001, 870}, |
| { 0x1a0002, 880}, |
| { 0x190003, 890}, |
| { 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_REG1 (*((volatile unsigned *)(0xda834400 + (0x2d << 2)))) |
| #define P_PIN_MUX_REG2 (*((volatile unsigned *)(0xda834400 + (0x2e << 2)))) |
| #define P_PIN_MUX_REG3 (*((volatile unsigned *)(0xda834400 + (0x2f << 2)))) |
| #define P_PIN_MUX_REG7 (*((volatile unsigned *)(0xda834400 + (0x33 << 2)))) |
| |
| #define P_PWM_MISC_REG_AB (*((volatile unsigned *)(0xc1100000 + (0x2156 << 2)))) |
| #define P_PWM_PWM_B (*((volatile unsigned *)(0xc1100000 + (0x2155 << 2)))) |
| #define P_PWM_MISC_REG_CD (*((volatile unsigned *)(0xc1100000 + (0x2192 << 2)))) |
| #define P_PWM_PWM_D (*((volatile unsigned *)(0xc1100000 + (0x2191 << 2)))) |
| |
| #define P_EE_TIMER_E (*((volatile unsigned *)(0xc1100000 + (0x2662 << 2)))) |
| |
| enum pwm_id { |
| pwm_a = 0, |
| pwm_b, |
| pwm_c, |
| pwm_d, |
| pwm_e, |
| pwm_f, |
| }; |
| |
| unsigned int _get_time(void) |
| { |
| return P_EE_TIMER_E; |
| } |
| |
| void _udelay_(unsigned int us) |
| { |
| unsigned int t0 = _get_time(); |
| |
| while (_get_time() - t0 <= us) |
| ; |
| } |
| |
| void pwm_init(int id) |
| { |
| unsigned int reg; |
| |
| /* |
| * TODO: support more pwm controllers, right now only support |
| * PWM_B, PWM_D |
| */ |
| |
| switch (id) { |
| case pwm_b: |
| reg = P_PWM_MISC_REG_AB; |
| reg &= ~(0x7f << 16); |
| reg |= ((1 << 23) | (1 << 1)); |
| P_PWM_MISC_REG_AB = reg; |
| /* |
| * default set to max voltage |
| */ |
| P_PWM_PWM_B = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0]; |
| reg = P_PIN_MUX_REG1; |
| reg &= ~(1 << 10); |
| P_PIN_MUX_REG1 = reg; |
| |
| reg = P_PIN_MUX_REG2; |
| reg &= ~(1 << 5); |
| reg |= (1 << 11); // enable PWM_B |
| P_PIN_MUX_REG2 = reg; |
| break; |
| |
| case pwm_d: |
| reg = P_PWM_MISC_REG_CD; |
| reg &= ~(0x7f << 16); |
| reg |= ((1 << 23) | (1 << 1)); |
| P_PWM_MISC_REG_CD = reg; |
| /* |
| * default set to max voltage |
| */ |
| P_PWM_PWM_D = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0]; |
| reg = P_PIN_MUX_REG1; |
| reg &= ~(1 << 9); |
| reg &= ~(1 << 11); |
| P_PIN_MUX_REG1 = reg; |
| |
| reg = P_PIN_MUX_REG2; |
| reg |= (1 << 12); // enable PWM_D |
| P_PIN_MUX_REG2 = 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; |
| } |
| switch (id) { |
| case pwm_b: |
| P_PWM_PWM_B = pwm_voltage_table[to][0]; |
| break; |
| |
| case pwm_d: |
| P_PWM_PWM_D = pwm_voltage_table[to][0]; |
| break; |
| default: |
| break; |
| } |
| _udelay_(200); |
| } |
| |
| void power_init(int mode) |
| { |
| pwm_init(pwm_b); |
| pwm_init(pwm_d); |
| serial_puts("set vcck to "); |
| serial_put_dec(CONFIG_VCCK_INIT_VOLTAGE); |
| serial_puts(" mv\n"); |
| pwm_set_voltage(pwm_b, CONFIG_VCCK_INIT_VOLTAGE); |
| serial_puts("set vddee to "); |
| serial_put_dec(CONFIG_VDDEE_INIT_VOLTAGE); |
| serial_puts(" mv\n"); |
| pwm_set_voltage(pwm_d, CONFIG_VDDEE_INIT_VOLTAGE); |
| } |