rockchip: mkimage: remove (left-over) assignment w/o effect [coverity]

[u-boot] / drivers / power / pmic / pmic_max8997.c

diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c
index 7fe1b53ff07872eea67562258bf0b2c09bd10528..32afb3f7d0a39aa3d74342dca2aec19d04106fb2 100644 (file)
--- a/drivers/power/pmic/pmic_max8997.c
+++ b/drivers/power/pmic/pmic_max8997.c
@@ -2,23 +2,7 @@
  *  Copyright (C) 2012 Samsung Electronics
  *  Lukasz Majewski <l.majewski@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>
@@ -27,6 +11,78 @@
 #include <i2c.h>
 #include <errno.h>
 
+unsigned char max8997_reg_ldo(int uV)
+{
+       unsigned char ret;
+       if (uV <= 800000)
+               return 0;
+       if (uV >= 3950000)
+               return MAX8997_LDO_MAX_VAL;
+       ret = (uV - 800000) / 50000;
+       if (ret > MAX8997_LDO_MAX_VAL) {
+               printf("MAX8997 LDO SETTING ERROR (%duV) -> %u\n", uV, ret);
+               ret = MAX8997_LDO_MAX_VAL;
+       }
+
+       return ret;
+}
+
+static int pmic_charger_state(struct pmic *p, int state, int current)
+{
+       unsigned char fc;
+       u32 val = 0;
+
+       if (pmic_probe(p))
+               return -ENODEV;
+
+       if (state == PMIC_CHARGER_DISABLE) {
+               puts("Disable the charger.\n");
+               pmic_reg_read(p, MAX8997_REG_MBCCTRL2, &val);
+               val &= ~(MBCHOSTEN | VCHGR_FC);
+               pmic_reg_write(p, MAX8997_REG_MBCCTRL2, val);
+
+               return -ENOTSUPP;
+       }
+
+       if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
+               printf("%s: Wrong charge current: %d [mA]\n",
+                      __func__, current);
+               return -EINVAL;
+       }
+
+       fc = (current - CHARGER_MIN_CURRENT) / CHARGER_CURRENT_RESOLUTION;
+       fc = fc & 0xf; /* up to 950 mA */
+
+       printf("Enable the charger @ %d [mA]\n", fc * CHARGER_CURRENT_RESOLUTION
+              + CHARGER_MIN_CURRENT);
+
+       val = fc | MBCICHFCSET;
+       pmic_reg_write(p, MAX8997_REG_MBCCTRL4, val);
+
+       pmic_reg_read(p, MAX8997_REG_MBCCTRL2, &val);
+       val = MBCHOSTEN | VCHGR_FC; /* enable charger & fast charge */
+       pmic_reg_write(p, MAX8997_REG_MBCCTRL2, val);
+
+       return 0;
+}
+
+static int pmic_charger_bat_present(struct pmic *p)
+{
+       u32 val;
+
+       if (pmic_probe(p))
+               return -ENODEV;
+
+       pmic_reg_read(p, MAX8997_REG_STATUS4, &val);
+
+       return !(val & DETBAT);
+}
+
+static struct power_chrg power_chrg_pmic_ops = {
+       .chrg_bat_present = pmic_charger_bat_present,
+       .chrg_state = pmic_charger_state,
+};
+
 int pmic_init(unsigned char bus)
 {
        static const char name[] = "MAX8997_PMIC";
@@ -37,7 +93,7 @@ int pmic_init(unsigned char bus)
                return -ENOMEM;
        }
 
-       puts("Board PMIC init\n");
+       debug("Board PMIC init\n");
 
        p->name = name;
        p->interface = PMIC_I2C;
@@ -46,5 +102,6 @@ int pmic_init(unsigned char bus)
        p->hw.i2c.tx_num = 1;
        p->bus = bus;
 
+       p->chrg = &power_chrg_pmic_ops;
        return 0;
 }