Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / power / mfd / fg_max77693.c

diff --git a/qemu/roms/u-boot/drivers/power/mfd/fg_max77693.c b/qemu/roms/u-boot/drivers/power/mfd/fg_max77693.c
new file mode 100644 (file)
index 0000000..4519fed
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/power/mfd/fg_max77693.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics
+ * Piotr Wilczek <p.wilczek@samsung.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <power/pmic.h>
+#include <power/max77693_fg.h>
+#include <i2c.h>
+#include <power/power_chrg.h>
+#include <power/battery.h>
+#include <power/fg_battery_cell_params.h>
+#include <errno.h>
+
+static int max77693_get_vcell(u32 *vcell)
+{
+       u16 value;
+       u8 ret;
+
+       ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VCELL, 1,
+                      (u8 *)&value, 2);
+       if (ret)
+               return ret;
+
+       *vcell = (u32)(value >> 3);
+       *vcell = *vcell * 625;
+
+       return 0;
+}
+
+static int max77693_get_soc(u32 *soc)
+{
+       u16 value;
+       u8 ret;
+
+       ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VFSOC, 1,
+                      (u8 *)&value, 2);
+       if (ret)
+               return ret;
+
+       *soc = (u32)(value >> 8);
+
+       return 0;
+}
+
+static int power_update_battery(struct pmic *p, struct pmic *bat)
+{
+       struct power_battery *pb = bat->pbat;
+       int ret;
+
+       if (pmic_probe(p)) {
+               puts("Can't find max77693 fuel gauge\n");
+               return -1;
+       }
+
+       ret = max77693_get_soc(&pb->bat->state_of_chrg);
+       if (ret)
+               return ret;
+
+       max77693_get_vcell(&pb->bat->voltage_uV);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static int power_check_battery(struct pmic *p, struct pmic *bat)
+{
+       struct power_battery *pb = bat->pbat;
+       unsigned int val;
+       int ret = 0;
+
+       if (pmic_probe(p)) {
+               puts("Can't find max77693 fuel gauge\n");
+               return -1;
+       }
+
+       ret = pmic_reg_read(p, MAX77693_STATUS, &val);
+       if (ret)
+               return ret;
+       debug("fg status: 0x%x\n", val);
+
+       ret = pmic_reg_read(p, MAX77693_VERSION, &pb->bat->version);
+       if (ret)
+               return ret;
+
+       ret = power_update_battery(p, bat);
+       if (ret)
+               return ret;
+       debug("fg ver: 0x%x\n", pb->bat->version);
+       printf("BAT: state_of_charge(SOC):%d%%\n",
+              pb->bat->state_of_chrg);
+
+       printf("     voltage: %d.%6.6d [V] (expected to be %d [mAh])\n",
+              pb->bat->voltage_uV / 1000000,
+              pb->bat->voltage_uV % 1000000,
+              pb->bat->capacity);
+
+       if (pb->bat->voltage_uV > 3850000)
+               pb->bat->state = EXT_SOURCE;
+       else if (pb->bat->voltage_uV < 3600000 || pb->bat->state_of_chrg < 5)
+               pb->bat->state = CHARGE;
+       else
+               pb->bat->state = NORMAL;
+
+       return 0;
+}
+
+static struct power_fg power_fg_ops = {
+       .fg_battery_check = power_check_battery,
+       .fg_battery_update = power_update_battery,
+};
+
+int power_fg_init(unsigned char bus)
+{
+       static const char name[] = "MAX77693_FG";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       debug("Board Fuel Gauge init\n");
+
+       p->name = name;
+       p->interface = PMIC_I2C;
+       p->number_of_regs = FG_NUM_OF_REGS;
+       p->hw.i2c.addr = MAX77693_FUEL_I2C_ADDR;
+       p->hw.i2c.tx_num = 2;
+       p->sensor_byte_order = PMIC_SENSOR_BYTE_ORDER_BIG;
+       p->bus = bus;
+
+       p->fg = &power_fg_ops;
+
+       return 0;
+}