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/*
* board/amlogic/gxtvbb_skt_v1/firmware/scp_task/pwr_ctrl.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>
static unsigned 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 ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#ifdef CONFIG_CEC_WAKEUP
#include <cec_tx_reg.h>
#endif
#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 + (0x2196 << 2))))
#define P_PWM_PWM_D (*((volatile unsigned *)(0xc1100000 + (0x2195 << 2))))
#define P_AO_PWM_PWM_B1 (*((volatile unsigned *)(0xc8100400 + (0x55 << 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,
pwm_ao_a,
pwm_ao_b,
};
static unsigned int ao_timer_ctrl;
static unsigned int ao_timera;
static void reset_ao_timera(void)
{
unsigned int val;
ao_timer_ctrl = readl(AO_TIMER_REG);
ao_timera = readl(AO_TIMERA_REG);
/* set ao timera work mode and interrrupt time 100us resolution*/
val = (1 << 2) | (3 << 0) | (1 << 3);
writel(val, AO_TIMER_REG);
/* periodic time 10ms */
writel(100,AO_TIMERA_REG);
}
static void restore_ao_timer(void)
{
writel(ao_timer_ctrl,AO_TIMER_REG);
writel(ao_timera,AO_TIMERA_REG);
}
static void pwm_set_voltage(unsigned int id, unsigned int voltage)
{
int to;
uart_puts("set vddee to 0x");
uart_put_hex(voltage, 16);
uart_puts("mv\n");
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_ao_b:
P_AO_PWM_PWM_B1 = pwm_voltage_table[to][0];
break;
case pwm_d:
P_PWM_PWM_D = pwm_voltage_table[to][0];
break;
default:
break;
}
_udelay(200);
}
/*p310:GPIOAO_2: L= POWER on mode, H = standby mode*/
static void power_off_3v3_5v(void)
{
aml_update_bits(AO_GPIO_O_EN_N, 1<<2, 0);
aml_update_bits(AO_GPIO_O_EN_N, 1<<18, 1<<18);
}
static void power_on_3v3_5v(void)
{
aml_update_bits(AO_GPIO_O_EN_N, 1<<2, 0);
aml_update_bits(AO_GPIO_O_EN_N, 1<<18, 0);
}
/*p310 GPIOAO_3 powr on :1, standby :0*/
static void power_off_vcck(void)
{
aml_update_bits(AO_GPIO_O_EN_N, 1<<3, 0);
aml_update_bits(AO_GPIO_O_EN_N, 1<<19, 0);
}
static void power_on_vcck(void)
{
aml_update_bits(AO_GPIO_O_EN_N, 1<<3, 0);
aml_update_bits(AO_GPIO_O_EN_N, 1<<19, 1<<19);
}
static void power_off_at_clk81(void)
{
pwm_set_voltage(pwm_ao_b, CONFIG_VDDEE_SLEEP_VOLTAGE); // reduce power
power_off_3v3_5v();
power_off_vcck();
}
static void power_on_at_clk81(unsigned int suspend_from)
{
pwm_set_voltage(pwm_ao_b, CONFIG_VDDEE_INIT_VOLTAGE);
power_on_vcck();
power_on_3v3_5v();
}
static void power_off_at_24M(void)
{
}
static void power_on_at_24M(void)
{
}
static void power_off_at_32k(unsigned int suspend_from)
{
}
static void power_on_at_32k(unsigned int suspend_from)
{
}
static void wakeup_timer_setup(void)
{
/* 1ms resolution*/
unsigned value;
value = readl(P_ISA_TIMER_MUX);
value |= ((0x3<<0) | (0x1<<12) | (0x1<<16));
writel(value, P_ISA_TIMER_MUX);
writel(9, P_ISA_TIMERA);
}
static void wakeup_timer_clear(void)
{
unsigned value;
value = readl(P_ISA_TIMER_MUX);
value &= ~((0x1<<12) | (0x1<<16));
writel(value, P_ISA_TIMER_MUX);
}
static void get_wakeup_source(void *response, unsigned int suspend_from)
{
struct wakeup_info *p = (struct wakeup_info *)response;
unsigned val;
p->gpio_info_count = 0;
p->status = RESPONSE_OK;
val = (AUTO_WAKEUP_SRC | REMOTE_WAKEUP_SRC);
#ifdef CONFIG_CEC_WAKEUP
val |= CEC_WAKEUP_SRC;
#endif
p->sources = val;
}
static unsigned int detect_key(unsigned int suspend_from)
{
int exit_reason = 0;
unsigned int time_out = readl(AO_DEBUG_REG2);
unsigned time_out_ms = time_out*100;
unsigned char adc_key_cnt = 0;
unsigned *irq = (unsigned *)WAKEUP_SRC_IRQ_ADDR_BASE;
/* unsigned *wakeup_en = (unsigned *)SECURE_TASK_RESPONSE_WAKEUP_EN; */
/* setup wakeup resources*/
/*auto suspend: timerA 10ms resolution*/
if (time_out_ms != 0)
wakeup_timer_setup();
saradc_enable();
reset_ao_timera();
init_remote();
#ifdef CONFIG_CEC_WAKEUP
if (hdmi_cec_func_config & 0x1) {
remote_cec_hw_reset();
cec_node_init();
}
#endif
/* *wakeup_en = 1;*/
do {
#ifdef CONFIG_CEC_WAKEUP
if (irq[IRQ_AO_CEC] == IRQ_AO_CEC_NUM) {
irq[IRQ_AO_CEC] = 0xFFFFFFFF;
if (suspend_from == SYS_POWEROFF)
continue;
if (cec_msg.log_addr) {
if (hdmi_cec_func_config & 0x1) {
cec_handler();
if (cec_msg.cec_power == 0x1) {
/*cec power key*/
exit_reason = CEC_WAKEUP;
break;
}
}
} else if (hdmi_cec_func_config & 0x1)
cec_node_init();
}
#endif
if (irq[IRQ_TIMERA] == IRQ_TIMERA_NUM) {
irq[IRQ_TIMERA] = 0xFFFFFFFF;
if (time_out_ms != 0)
time_out_ms--;
if (time_out_ms == 0) {
wakeup_timer_clear();
exit_reason = AUTO_WAKEUP;
}
}
if (irq[IRQ_AO_TIMERA] == IRQ_AO_TIMERA_NUM) {
irq[IRQ_AO_TIMERA] = 0xFFFFFFFF;
if (check_adc_key_resume()) {
adc_key_cnt++;
/*using variable 'adc_key_cnt' to eliminate the dithering of the key*/
if (2 == adc_key_cnt)
exit_reason = POWER_KEY_WAKEUP;
} else {
adc_key_cnt = 0;
}
}
if (irq[IRQ_AO_IR_DEC] == IRQ_AO_IR_DEC_NUM) {
irq[IRQ_AO_IR_DEC] = 0xFFFFFFFF;
if (remote_detect_key())
exit_reason = REMOTE_WAKEUP;
}
if (exit_reason)
break;
else
asm volatile("wfi");
} while (1);
wakeup_timer_clear();
restore_ao_timer();
saradc_disable();
return exit_reason;
}
static void pwr_op_init(struct pwr_op *pwr_op)
{
pwr_op->power_off_at_clk81 = power_off_at_clk81;
pwr_op->power_on_at_clk81 = power_on_at_clk81;
pwr_op->power_off_at_24M = power_off_at_24M;
pwr_op->power_on_at_24M = power_on_at_24M;
pwr_op->power_off_at_32k = power_off_at_32k;
pwr_op->power_on_at_32k = power_on_at_32k;
pwr_op->detect_key = detect_key;
pwr_op->get_wakeup_source = get_wakeup_source;
}