-/*
- * Copyright (C) 2014 Lothar Waßmann <LW@KARO-electronics.de>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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 <common.h>
-#include <i2c.h>
-
-#include "../common/karo.h"
-#include "pmic.h"
-
-#define RN5T618_NOETIMSET 0x11
-#define RN5T618_LDORTC1_SLOT 0x2a
-#define RN5T618_DC1CTL 0x2c
-#define RN5T618_DC1CTL2 0x2d
-#define RN5T618_DC2CTL 0x2e
-#define RN5T618_DC2CTL2 0x2f
-#define RN5T618_DC3CTL 0x30
-#define RN5T618_DC3CTL2 0x31
-#define RN5T618_DC1DAC 0x36 /* CORE */
-#define RN5T618_DC2DAC 0x37 /* SOC */
-#define RN5T618_DC3DAC 0x38 /* DDR */
-#define RN5T618_DC1DAC_SLP 0x3b
-#define RN5T618_DC2DAC_SLP 0x3c
-#define RN5T618_DC3DAC_SLP 0x3d
-#define RN5T618_LDOEN1 0x44
-#define RN5T618_LDOEN2 0x45
-#define RN5T618_LDODIS 0x46
-#define RN5T618_LDO3DAC 0x4e /* IO */
-#define RN5T618_LDORTCDAC 0x56 /* VBACKUP */
-
-#define VDD_RTC_VAL mV_to_regval_rtc(3000)
-#define VDD_HIGH_VAL mV_to_regval3(3000)
-#define VDD_HIGH_VAL_LP mV_to_regval3(3000)
-#define VDD_CORE_VAL mV_to_regval(1425) /* DCDC1 */
-#define VDD_CORE_VAL_LP mV_to_regval(900)
-#define VDD_SOC_VAL mV_to_regval(1425) /* DCDC2 */
-#define VDD_SOC_VAL_LP mV_to_regval(900)
-#define VDD_DDR_VAL mV_to_regval(1500) /* DCDC3 */
-#define VDD_DDR_VAL_LP mV_to_regval(1500)
-
-/* calculate voltages in 10mV */
-#define v2r(v,n,m) DIV_ROUND(((((v) < (n)) ? (n) : (v)) - (n)), (m))
-#define r2v(r,n,m) (((r) * (m) + (n)) / 10)
-
-/* DCDC1-3 */
-#define mV_to_regval(mV) v2r((mV) * 10, 6000, 125)
-#define regval_to_mV(r) r2v(r, 6000, 125)
-
-/* LDO1-2 */
-#define mV_to_regval2(mV) v2r((mV) * 10, 9000, 250)
-#define regval2_to_mV(r) r2v(r, 9000, 250)
-
-/* LDO3 */
-#define mV_to_regval3(mV) v2r((mV) * 10, 6000, 250)
-#define regval3_to_mV(r) r2v(r, 6000, 250)
-
-/* LDORTC */
-#define mV_to_regval_rtc(mV) v2r((mV) * 10, 17000, 250)
-#define regval_rtc_to_mV(r) r2v(r, 17000, 250)
-
-static struct pmic_regs rn5t618_regs[] = {
- { RN5T618_NOETIMSET, 0, },
- { RN5T618_DC1DAC, VDD_CORE_VAL, },
- { RN5T618_DC2DAC, VDD_SOC_VAL, },
- { RN5T618_DC3DAC, VDD_DDR_VAL, },
- { RN5T618_DC1DAC_SLP, VDD_CORE_VAL_LP, },
- { RN5T618_DC2DAC_SLP, VDD_SOC_VAL_LP, },
- { RN5T618_DC3DAC_SLP, VDD_DDR_VAL_LP, },
- { RN5T618_LDOEN1, 0x01f, ~0x1f, },
- { RN5T618_LDOEN2, 0x10, ~0x30, },
- { RN5T618_LDODIS, 0x00, },
- { RN5T618_LDO3DAC, VDD_HIGH_VAL, },
- { RN5T618_LDORTCDAC, VDD_RTC_VAL, },
- { RN5T618_LDORTC1_SLOT, 0x0f, ~0x3f, },
-};
-
-static int rn5t618_setup_regs(uchar slave_addr, struct pmic_regs *r,
- size_t count)
-{
- int ret;
- int i;
-
- for (i = 0; i < count; i++, r++) {
-#ifdef DEBUG
- unsigned char value;
-
- ret = i2c_read(slave_addr, r->addr, 1, &value, 1);
- if (ret) {
- printf("%s: failed to read PMIC register %02x: %d\n",
- __func__, r->addr, ret);
- return ret;
- }
- if ((value & ~r->mask) != r->val) {
- printf("Changing PMIC reg %02x from %02x to %02x\n",
- r->addr, value, r->val);
- }
-#endif
- ret = i2c_write(slave_addr, r->addr, 1, &r->val, 1);
- if (ret) {
- printf("%s: failed to write PMIC register %02x: %d\n",
- __func__, r->addr, ret);
- return ret;
- }
-#ifdef DEBUG
- ret = i2c_read(slave_addr, r->addr, 1, &value, 1);
- if (ret) {
- printf("%s: failed to read PMIC register %02x: %d\n",
- __func__, r->addr, ret);
- return ret;
- }
- if (value != r->val) {
- printf("Failed to set PMIC reg %02x to %02x; actual value: %02x\n",
- r->addr, r->val, value);
- }
-#endif
- }
- return 0;
-}
-
-int rn5t618_pmic_setup(uchar slave_addr, struct pmic_regs *regs,
- size_t count)
-{
- int ret;
- unsigned char value;
-
- ret = i2c_read(slave_addr, 0x11, 1, &value, 1);
- if (ret) {
- printf("%s: i2c_read error: %d\n", __func__, ret);
- return ret;
- }
-
- ret = rn5t618_setup_regs(slave_addr, rn5t618_regs,
- ARRAY_SIZE(rn5t618_regs));
- if (ret)
- return ret;
-
- ret = i2c_read(slave_addr, RN5T618_DC1DAC, 1, &value, 1);
- if (ret == 0) {
- printf("VDDCORE set to %umV\n", regval_to_mV(value));
- } else {
- printf("Failed to read VDDCORE register setting\n");
- }
-
- ret = i2c_read(slave_addr, RN5T618_DC2DAC, 1, &value, 1);
- if (ret == 0) {
- printf("VDDSOC set to %umV\n", regval_to_mV(value));
- } else {
- printf("Failed to read VDDSOC register setting\n");
- }
-
- return ret;
-}
projects / karo-tx-uboot.git / commitdiff