board/hardkernel/odroidc2/firmware/scp_task/pwr_ctrl.c

/*
* Copyright (C) 2017 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* *
Description:
*/

/*p200/201	GPIOAO_2  powr on	:0, power_off	:1*/

#define __SUSPEND_FIRMWARE__
#include <config.h>
#undef __SUSPEND_FIRMWARE__

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#ifdef CONFIG_CEC_WAKEUP
#include <cec_tx_reg.h>
#endif

#include <gpio-gxbb.h>

extern int pwm_voltage_table[31][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 + (0x2196 << 2))))
#define P_PWM_PWM_D		(*((volatile unsigned *)(0xc1100000 + (0x2195 << 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,
};

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_d:
		P_PWM_PWM_D = pwm_voltage_table[to][0];
		break;
	default:
		break;
	}
	_udelay(200);
}

static void power_off_3v3(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(void)
{
	aml_update_bits(AO_GPIO_O_EN_N, 1<<2, 0);
	aml_update_bits(AO_GPIO_O_EN_N, 1<<18, 0);
}

/*p200/201	GPIOAO_4  powr on	:1, power_off	:0*/
static void power_off_vcck(void)
{
	aml_update_bits(AO_GPIO_O_EN_N, 1<<4, 0);
	aml_update_bits(AO_GPIO_O_EN_N, 1<<20, 0);
}
static void power_on_vcck(void)
{
	aml_update_bits(AO_GPIO_O_EN_N, 1<<4, 0);
	aml_update_bits(AO_GPIO_O_EN_N, 1<<20, 1<<20);
}

static void power_off_at_clk81(void)
{
	power_off_3v3();
	power_off_vcck();
	pwm_set_voltage(pwm_d, CONFIG_VDDEE_SLEEP_VOLTAGE);	// reduce power
}
static void power_on_at_clk81(void)
{
	pwm_set_voltage(pwm_d, CONFIG_VDDEE_INIT_VOLTAGE);
	power_on_vcck();
	power_on_3v3();
}

static void power_off_at_24M(void)
{
	//LED gpioao_13
	aml_update_bits(AO_GPIO_O_EN_N, 1<<29, 0);
}

static void power_on_at_24M(void)
{
	aml_update_bits(AO_GPIO_O_EN_N, 1<<29, 1<<29);
}

static void power_off_at_32k(void)
{
}

static void power_on_at_32k(void)
{
}

void get_wakeup_source(void *response, unsigned int suspend_from)
{
	struct wakeup_info *p = (struct wakeup_info *)response;
	unsigned val;
	struct wakeup_gpio_info *gpio;
	unsigned i = 0;

	p->status = RESPONSE_OK;
	val = (POWER_KEY_WAKEUP_SRC | AUTO_WAKEUP_SRC | REMOTE_WAKEUP_SRC);
#ifdef CONFIG_BT_WAKEUP
	val |= BT_WAKEUP_SRC;
#endif

#ifdef CONFIG_CEC_WAKEUP
	if (suspend_from != SYS_POWEROFF)
		val |= CEC_WAKEUP_SRC;
#endif
#ifdef CONFIG_WIFI_WAKEUP
	if (suspend_from != SYS_POWEROFF)
		val |= WIFI_WAKEUP_SRC;
#endif

	p->sources = val;

	/* Power Key: AO_GPIO[3]*/
	gpio = &(p->gpio_info[i]);
	gpio->wakeup_id = POWER_KEY_WAKEUP_SRC;
	gpio->gpio_in_idx = GPIOAO_3;
	gpio->gpio_in_ao = 1;
	gpio->gpio_out_idx = -1;
	gpio->gpio_out_ao = -1;
	gpio->irq = IRQ_AO_GPIO0_NUM;
	gpio->trig_type = GPIO_IRQ_FALLING_EDGE;
	p->gpio_info_count = ++i;

	/* BT Wakeup: IN: GPIOX[21], OUT: GPIOX[20]*/
	gpio = &(p->gpio_info[i]);
	gpio->wakeup_id = BT_WAKEUP;
	gpio->gpio_in_idx = GPIOX_21;
	gpio->gpio_in_ao = 0;
	gpio->gpio_out_idx = GPIOX_20;
	gpio->gpio_out_ao = 0;
	gpio->irq = IRQ_GPIO0_NUM;
	gpio->trig_type = GPIO_IRQ_FALLING_EDGE;
	p->gpio_info_count = ++i;

#ifdef CONFIG_WIFI_WAKEUP
	if (suspend_from != SYS_POWEROFF) {
		/*WIFI Wakeup: IN: GPIOX[7], OUT: GPIOX[6]*/
		gpio = &(p->gpio_info[i]);
		gpio->wakeup_id = WIFI_WAKEUP;
		gpio->gpio_in_idx = GPIOX_7;
		gpio->gpio_in_ao = 0;
		gpio->gpio_out_idx = GPIOX_6;
		gpio->gpio_out_ao = 0;
		gpio->irq = IRQ_GPIO1_NUM;
		gpio->trig_type = GPIO_IRQ_FALLING_EDGE;
		p->gpio_info_count = ++i;
	}
#endif
}

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(10, P_ISA_TIMERA);
}
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 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 *irq = (unsigned *)SECURE_TASK_SHARE_IRQ;
	/* 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();

	init_remote();
#ifdef CONFIG_CEC_WAKEUP
	if (hdmi_cec_func_config & 0x1) {
		remote_cec_hw_reset();
		cec_node_init();
	}
#endif

	/* *wakeup_en = 1;*/
	do {
		switch (*irq) {
#ifdef CONFIG_CEC_WAKEUP
		case IRQ_AO_CEC_NUM:
			if (suspend_from == SYS_POWEROFF)
				break;
			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();
		break;
#endif
		case IRQ_TIMERA_NUM:
			if (time_out_ms != 0)
				time_out_ms--;
			if (time_out_ms == 0) {
				wakeup_timer_clear();
				exit_reason = AUTO_WAKEUP;
			}
			break;

		case IRQ_AO_IR_DEC_NUM:
			if (remote_detect_key())
				exit_reason = REMOTE_WAKEUP;
			break;

		case IRQ_AO_GPIO0_NUM:
			if ((readl(AO_GPIO_I) & (1<<3)) == 0)
				exit_reason = POWER_KEY_WAKEUP;
			break;

#ifdef CONFIG_BT_WAKEUP
		case IRQ_GPIO0_NUM:
			if (!(readl(PREG_PAD_GPIO4_EN_N)
					&(0x01 << 20)) &&
					(readl(PREG_PAD_GPIO4_O)
					& (0x01 << 20)) &&
					!(readl(PREG_PAD_GPIO4_I)
					& (0x01 << 21)))
						exit_reason = BT_WAKEUP;
			break;
#endif
#ifdef CONFIG_WIFI_WAKEUP
		case IRQ_GPIO1_NUM:
			if (suspend_from) {
				if (!(readl(PREG_PAD_GPIO4_EN_N)
						& (0x01 << 6)) &&
						(readl(PREG_PAD_GPIO4_O)
						& (0x01 << 6)) &&
						!(readl(PREG_PAD_GPIO4_I)
						& (0x01 << 7)))
						exit_reason = WIFI_WAKEUP;
			}
			break;
#endif
		default:
			break;
		}
		*irq = 0xffffffff;
		if (exit_reason)
			break;
		else
			asm volatile("wfi");
	} while (1);

	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;
}