diff options
Diffstat (limited to 'src/soc/rockchip/rk3288/rk808.c')
| -rw-r--r-- | src/soc/rockchip/rk3288/rk808.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/src/soc/rockchip/rk3288/rk808.c b/src/soc/rockchip/rk3288/rk808.c deleted file mode 100644 index 562e76b720..0000000000 --- a/src/soc/rockchip/rk3288/rk808.c +++ /dev/null @@ -1,203 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 Rockchip Inc. - * - * 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; version 2 of the License. - * - * 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. - */ - -#include <assert.h> -#include <bcd.h> -#include <console/console.h> -#include <delay.h> -#include <device/i2c.h> -#include <rtc.h> -#include <soc/rk808.h> -#include <stdint.h> -#include <stdlib.h> - -#if CONFIG_PMIC_BUS < 0 -#error "PMIC_BUS must be set in mainboard's Kconfig." -#endif - -#define RK808_ADDR 0x1b - -#define DCDC_EN 0x23 -#define LDO_EN 0x24 -#define BUCK1SEL 0x2f -#define BUCK4SEL 0x38 -#define LDO_ONSEL(i) (0x39 + 2 * i) -#define LDO_SLPSEL(i) (0x3a + 2 * i) - -#define RTC_SECOND 0x00 -#define RTC_MINUTE 0x01 -#define RTC_HOUR 0x02 -#define RTC_DAY 0x03 -#define RTC_MONTH 0x04 -#define RTC_YEAR 0x05 -#define RTC_WEEKS 0x06 -#define RTC_CTRL 0x10 -#define RTC_STATUS 0x11 - -#define RTC_CTRL_STOP_RTC (1 << 0) -#define RTC_CTRL_GET_TIME (1 << 6) -#define RTC_CTRL_RTC_READSEL (1 << 7) - -#define DCDC_UV_ACT 0x28 -#define DCDC_ILMAX 0x90 - -static int rk808_read(uint8_t reg, uint8_t *value) -{ - return i2c_readb(CONFIG_PMIC_BUS, RK808_ADDR, reg, value); -} - -static int rk808_write(uint8_t reg, uint8_t value) -{ - return i2c_writeb(CONFIG_PMIC_BUS, RK808_ADDR, reg, value); -} - -static void rk808_clrsetbits(uint8_t reg, uint8_t clr, uint8_t set) -{ - uint8_t value; - - if (rk808_read(reg, &value) || rk808_write(reg, (value & ~clr) | set)) - printk(BIOS_ERR, "ERROR: Cannot set Rk808[%#x]!\n", reg); -} - -void rk808_configure_switch(int sw, int enabled) -{ - assert(sw == 1 || sw == 2); - rk808_clrsetbits(DCDC_EN, 1 << (sw + 4), !!enabled << (sw + 4)); -} - -void rk808_configure_ldo(int ldo, int millivolts) -{ - uint8_t vsel; - - if (!millivolts) { - rk808_clrsetbits(LDO_EN, 1 << (ldo - 1), 0); - return; - } - - switch (ldo) { - case 1: - case 2: - case 4: - case 5: - case 8: - vsel = div_round_up(millivolts, 100) - 18; - assert(vsel <= 0x10); - break; - case 3: - case 6: - case 7: - vsel = div_round_up(millivolts, 100) - 8; - assert(vsel <= 0x11); - break; - default: - die("Unknown LDO index!"); - } - - rk808_clrsetbits(LDO_ONSEL(ldo), 0x1f, vsel); - rk808_clrsetbits(LDO_EN, 0, 1 << (ldo - 1)); -} - -void rk808_configure_buck(int buck, int millivolts) -{ - uint8_t vsel; - uint8_t buck_reg; - - switch (buck) { - case 1: - case 2: - /* 25mV steps. base = 29 * 25mV = 725 */ - vsel = (div_round_up(millivolts, 25) - 29) * 2 + 1; - assert(vsel <= 0x3f); - buck_reg = BUCK1SEL + 4 * (buck - 1); - break; - case 4: - vsel = div_round_up(millivolts, 100) - 18; - assert(vsel <= 0xf); - buck_reg = BUCK4SEL; - break; - default: - die("Unknown buck index!"); - } - rk808_clrsetbits(DCDC_ILMAX, 0, 3 << ((buck - 1) * 2)); - - /* undervoltage detection may be wrong, disable it */ - rk808_clrsetbits(DCDC_UV_ACT, 1 << (buck - 1), 0); - - rk808_clrsetbits(buck_reg, 0x3f, vsel); - rk808_clrsetbits(DCDC_EN, 0, 1 << (buck - 1)); -} - -static void rk808rtc_stop(void) -{ - rk808_clrsetbits(RTC_CTRL, RTC_CTRL_STOP_RTC, 0); -} - -static void rk808rtc_start(void) -{ - rk808_clrsetbits(RTC_CTRL, 0, RTC_CTRL_STOP_RTC); -} - -int rtc_set(const struct rtc_time *time) -{ - int ret = 0; - - /* RTC time can only be set when RTC is frozen */ - rk808rtc_stop(); - - ret |= rk808_write(RTC_SECOND, bin2bcd(time->sec)); - ret |= rk808_write(RTC_MINUTE, bin2bcd(time->min)); - ret |= rk808_write(RTC_HOUR, bin2bcd(time->hour)); - ret |= rk808_write(RTC_DAY, bin2bcd(time->mday)); - ret |= rk808_write(RTC_MONTH, bin2bcd(time->mon)); - ret |= rk808_write(RTC_YEAR, bin2bcd(time->year)); - - rk808rtc_start(); - return ret; -} - -int rtc_get(struct rtc_time *time) -{ - uint8_t value; - int ret = 0; - - /* - * Set RTC_READSEL to cause reads to access shadow registers and - * transition GET_TIME from 0 to 1 to cause dynamic register content - * to be copied into shadow registers. This ensures a coherent reading - * of time values as we access each register using slow I2C transfers. - */ - rk808_clrsetbits(RTC_CTRL, RTC_CTRL_GET_TIME, 0); - rk808_clrsetbits(RTC_CTRL, 0, RTC_CTRL_GET_TIME | RTC_CTRL_RTC_READSEL); - - ret |= rk808_read(RTC_SECOND, &value); - time->sec = bcd2bin(value & 0x7f); - - ret |= rk808_read(RTC_MINUTE, &value); - time->min = bcd2bin(value & 0x7f); - - ret |= rk808_read(RTC_HOUR, &value); - time->hour = bcd2bin(value & 0x3f); - - ret |= rk808_read(RTC_DAY, &value); - time->mday = bcd2bin(value & 0x3f); - - ret |= rk808_read(RTC_MONTH, &value); - time->mon = bcd2bin(value & 0x1f); - - ret |= rk808_read(RTC_YEAR, &value); - time->year = bcd2bin(value); - - return ret; -} |