* Copyright (C) 2012 Samsung Electronics
* Rajeshwari Shinde <rajeshwari.s@samsung.com>
*
- * 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 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
+static const char max77686_buck_addr[] = {
+ 0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38
+};
+
+static unsigned int max77686_ldo_volt2hex(int ldo, ulong uV)
+{
+ unsigned int hex = 0;
+
+ switch (ldo) {
+ case 1:
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 15:
+ hex = (uV - 800000) / 25000;
+ break;
+ default:
+ hex = (uV - 800000) / 50000;
+ }
+
+ if (hex >= 0 && hex <= MAX77686_LDO_VOLT_MAX_HEX)
+ return hex;
+
+ debug("%s: %ld is wrong voltage value for LDO%d\n", __func__, uV, ldo);
+ return 0;
+}
+
+static int max77686_buck_volt2hex(int buck, ulong uV)
+{
+ int hex = 0;
+
+ if (buck < 5 || buck > 9) {
+ debug("%s: buck %d is not supported\n", __func__, buck);
+ return -EINVAL;
+ }
+
+ hex = (uV - 750000) / 50000;
+
+ if (hex >= 0 && hex <= MAX77686_BUCK_VOLT_MAX_HEX)
+ return hex;
+
+ debug("%s: %ld is wrong voltage value for BUCK%d\n",
+ __func__, uV, buck);
+ return -EINVAL;
+}
+
+int max77686_set_ldo_voltage(struct pmic *p, int ldo, ulong uV)
+{
+ unsigned int val, ret, hex, adr;
+
+ if (ldo < 1 || ldo > 26) {
+ printf("%s: %d is wrong ldo number\n", __func__, ldo);
+ return -1;
+ }
+
+ adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
+ hex = max77686_ldo_volt2hex(ldo, uV);
+
+ if (!hex)
+ return -1;
+
+ ret = pmic_reg_read(p, adr, &val);
+ if (ret)
+ return ret;
+
+ val &= ~MAX77686_LDO_VOLT_MASK;
+ val |= hex;
+ ret |= pmic_reg_write(p, adr, val);
+
+ return ret;
+}
+
+int max77686_set_buck_voltage(struct pmic *p, int buck, ulong uV)
+{
+ unsigned int val, adr;
+ int hex, ret;
+
+ if (buck < 5 || buck > 9) {
+ printf("%s: %d is an unsupported bucket number\n",
+ __func__, buck);
+ return -EINVAL;
+ }
+
+ adr = max77686_buck_addr[buck] + 1;
+ hex = max77686_buck_volt2hex(buck, uV);
+
+ if (hex < 0)
+ return hex;
+
+ ret = pmic_reg_read(p, adr, &val);
+ if (ret)
+ return ret;
+
+ val &= ~MAX77686_BUCK_VOLT_MASK;
+ ret |= pmic_reg_write(p, adr, val | hex);
+
+ return ret;
+}
+
+int max77686_set_ldo_mode(struct pmic *p, int ldo, char opmode)
+{
+ unsigned int val, ret, adr, mode;
+
+ if (ldo < 1 || 26 < ldo) {
+ printf("%s: %d is wrong ldo number\n", __func__, ldo);
+ return -1;
+ }
+
+ adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
+
+ /* mode */
+ switch (opmode) {
+ case OPMODE_OFF:
+ mode = MAX77686_LDO_MODE_OFF;
+ break;
+ case OPMODE_STANDBY:
+ switch (ldo) {
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ case 16:
+ mode = MAX77686_LDO_MODE_STANDBY;
+ break;
+ default:
+ mode = 0xff;
+ }
+ break;
+ case OPMODE_LPM:
+ mode = MAX77686_LDO_MODE_LPM;
+ break;
+ case OPMODE_ON:
+ mode = MAX77686_LDO_MODE_ON;
+ break;
+ default:
+ mode = 0xff;
+ }
+
+ if (mode == 0xff) {
+ printf("%s: %d is not supported on LDO%d\n",
+ __func__, opmode, ldo);
+ return -1;
+ }
+
+ ret = pmic_reg_read(p, adr, &val);
+ if (ret)
+ return ret;
+
+ val &= ~MAX77686_LDO_MODE_MASK;
+ val |= mode;
+ ret |= pmic_reg_write(p, adr, val);
+
+ return ret;
+}
+
+int max77686_set_buck_mode(struct pmic *p, int buck, char opmode)
+{
+ unsigned int val, ret, mask, adr, size, mode, mode_shift;
+
+ size = ARRAY_SIZE(max77686_buck_addr);
+ if (buck >= size) {
+ printf("%s: %d is wrong buck number\n", __func__, buck);
+ return -1;
+ }
+
+ adr = max77686_buck_addr[buck];
+
+ /* mask */
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
+ break;
+ default:
+ mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
+ }
+
+ mask = MAX77686_BUCK_MODE_MASK << mode_shift;
+
+ /* mode */
+ switch (opmode) {
+ case OPMODE_OFF:
+ mode = MAX77686_BUCK_MODE_OFF << mode_shift;
+ break;
+ case OPMODE_STANDBY:
+ switch (buck) {
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+ break;
+ case OPMODE_LPM:
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ mode = MAX77686_BUCK_MODE_LPM << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+ break;
+ case OPMODE_ON:
+ mode = MAX77686_BUCK_MODE_ON << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+
+ if (mode == 0xff) {
+ printf("%s: %d is not supported on BUCK%d\n",
+ __func__, opmode, buck);
+ return -1;
+ }
+
+ ret = pmic_reg_read(p, adr, &val);
+ if (ret)
+ return ret;
+
+ val &= ~mask;
+ val |= mode;
+ ret |= pmic_reg_write(p, adr, val);
+
+ return ret;
+}
+
int pmic_init(unsigned char bus)
{
static const char name[] = "MAX77686_PMIC";
struct pmic *p = pmic_alloc();
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+ const void *blob = gd->fdt_blob;
+ int node, parent, tmp;
+#endif
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
-#ifdef CONFIG_OF_CONTROL
- const void *blob = gd->fdt_blob;
- int node, parent;
-
+#if CONFIG_IS_ENABLED(OF_CONTROL)
node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
if (node < 0) {
debug("PMIC: No node for PMIC Chip in device tree\n");
return -1;
}
- p->bus = i2c_get_bus_num_fdt(parent);
- if (p->bus < 0) {
+ /* tmp since p->bus is unsigned */
+ tmp = i2c_get_bus_num_fdt(parent);
+ if (tmp < 0) {
debug("%s: Cannot find I2C bus\n", __func__);
return -1;
}
+ p->bus = tmp;
p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
#else
p->bus = bus;
p->name = name;
p->interface = PMIC_I2C;
- p->number_of_regs = PMIC_NUM_OF_REGS;
+ p->number_of_regs = MAX77686_NUM_OF_REGS;
p->hw.i2c.tx_num = 1;
puts("Board PMIC init\n");
projects / karo-tx-uboot.git / blobdiff