Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / power / pmic / pmic_tps65910.c

diff --git a/qemu/roms/u-boot/drivers/power/pmic/pmic_tps65910.c b/qemu/roms/u-boot/drivers/power/pmic/pmic_tps65910.c
new file mode 100644 (file)
index 0000000..7ee1160
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/power/pmic/pmic_tps65910.c
@@ -0,0 +1,83 @@
+/*
+ * (C) Copyright 2011-2013
+ * Texas Instruments, <www.ti.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <power/tps65910.h>
+
+/*
+ * tps65910_set_i2c_control() - Set the TPS65910 to be controlled via the I2C
+ *                             interface.
+ * @return:                   0 on success, not 0 on failure
+ */
+int tps65910_set_i2c_control(void)
+{
+       int ret;
+       uchar buf;
+
+       /* VDD1/2 voltage selection register access by control i/f */
+       ret = i2c_read(TPS65910_CTRL_I2C_ADDR, TPS65910_DEVCTRL_REG, 1,
+                      &buf, 1);
+
+       if (ret)
+               return ret;
+
+       buf |= TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_CTL_I2C;
+
+       return i2c_write(TPS65910_CTRL_I2C_ADDR, TPS65910_DEVCTRL_REG, 1,
+                        &buf, 1);
+}
+
+/*
+ * tps65910_voltage_update() - Voltage switching for MPU frequency switching.
+ * @module:                   mpu - 0, core - 1
+ * @vddx_op_vol_sel:          vdd voltage to set
+ * @return:                   0 on success, not 0 on failure
+ */
+int tps65910_voltage_update(unsigned int module, unsigned char vddx_op_vol_sel)
+{
+       uchar buf;
+       unsigned int reg_offset;
+       int ret;
+
+       if (module == MPU)
+               reg_offset = TPS65910_VDD1_OP_REG;
+       else
+               reg_offset = TPS65910_VDD2_OP_REG;
+
+       /* Select VDDx OP   */
+       ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+       if (ret)
+               return ret;
+
+       buf &= ~TPS65910_OP_REG_CMD_MASK;
+
+       ret = i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+       if (ret)
+               return ret;
+
+       /* Configure VDDx OP  Voltage */
+       ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+       if (ret)
+               return ret;
+
+       buf &= ~TPS65910_OP_REG_SEL_MASK;
+       buf |= vddx_op_vol_sel;
+
+       ret = i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+       if (ret)
+               return ret;
+
+       ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+       if (ret)
+               return ret;
+
+       if ((buf & TPS65910_OP_REG_SEL_MASK) != vddx_op_vol_sel)
+               return 1;
+
+       return 0;
+}