Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / power / pmic / pmic_max8997.c

diff --git a/qemu/roms/u-boot/drivers/power/pmic/pmic_max8997.c b/qemu/roms/u-boot/drivers/power/pmic/pmic_max8997.c
new file mode 100644 (file)
index 0000000..ba01692
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/power/pmic/pmic_max8997.c
@@ -0,0 +1,107 @@
+/*
+ *  Copyright (C) 2012 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <power/pmic.h>
+#include <power/max8997_pmic.h>
+#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 -1;
+
+       if (state == 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 -1;
+       }
+
+       if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
+               printf("%s: Wrong charge current: %d [mA]\n",
+                      __func__, current);
+               return -1;
+       }
+
+       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 -1;
+
+       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";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       debug("Board PMIC init\n");
+
+       p->name = name;
+       p->interface = PMIC_I2C;
+       p->number_of_regs = PMIC_NUM_OF_REGS;
+       p->hw.i2c.addr = MAX8997_I2C_ADDR;
+       p->hw.i2c.tx_num = 1;
+       p->bus = bus;
+
+       p->chrg = &power_chrg_pmic_ops;
+       return 0;
+}