+ i2c = max8998->iodev->i2c;
+
+ /* NOTE: */
+ /* For unused GPIO NOT marked as -1 (thereof equal to 0) WARN_ON */
+ /* will be displayed */
+
+ /* Check if MAX8998 voltage selection GPIOs are defined */
+ if (gpio_is_valid(pdata->buck1_set1) &&
+ gpio_is_valid(pdata->buck1_set2)) {
+ /* Check if SET1 is not equal to 0 */
+ if (!pdata->buck1_set1) {
+ printk(KERN_ERR "MAX8998 SET1 GPIO defined as 0 !\n");
+ WARN_ON(!pdata->buck1_set1);
+ return -EIO;
+ }
+ /* Check if SET2 is not equal to 0 */
+ if (!pdata->buck1_set2) {
+ printk(KERN_ERR "MAX8998 SET2 GPIO defined as 0 !\n");
+ WARN_ON(!pdata->buck1_set2);
+ return -EIO;
+ }
+
+ gpio_request(pdata->buck1_set1, "MAX8998 BUCK1_SET1");
+ gpio_direction_output(pdata->buck1_set1,
+ max8998->buck1_idx & 0x1);
+
+
+ gpio_request(pdata->buck1_set2, "MAX8998 BUCK1_SET2");
+ gpio_direction_output(pdata->buck1_set2,
+ (max8998->buck1_idx >> 1) & 0x1);
+ /* Set predefined value for BUCK1 register 1 */
+ i = 0;
+ while (buck12_voltage_map_desc.min +
+ buck12_voltage_map_desc.step*i
+ != (pdata->buck1_max_voltage1 / 1000))
+ i++;
+ printk(KERN_ERR "i:%d, buck1_idx:%d\n", i, max8998->buck1_idx);
+ max8998->buck1_vol[0] = i;
+ ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE1, i);
+
+ /* Set predefined value for BUCK1 register 2 */
+ i = 0;
+ while (buck12_voltage_map_desc.min +
+ buck12_voltage_map_desc.step*i
+ != (pdata->buck1_max_voltage2 / 1000))
+ i++;
+
+ max8998->buck1_vol[1] = i;
+ printk(KERN_ERR "i:%d, buck1_idx:%d\n", i, max8998->buck1_idx);
+ ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE2, i)
+ + ret;
+ if (ret)
+ return ret;
+
+ }
+
+ if (gpio_is_valid(pdata->buck2_set3)) {
+ /* Check if SET3 is not equal to 0 */
+ if (!pdata->buck2_set3) {
+ printk(KERN_ERR "MAX8998 SET3 GPIO defined as 0 !\n");
+ WARN_ON(!pdata->buck2_set3);
+ return -EIO;
+ }
+ gpio_request(pdata->buck2_set3, "MAX8998 BUCK2_SET3");
+ gpio_direction_output(pdata->buck2_set3,
+ max8998->buck2_idx & 0x1);
+
+ /* BUCK2 - set preset default voltage value to buck2_vol[0] */
+ i = 0;
+ while (buck12_voltage_map_desc.min +
+ buck12_voltage_map_desc.step*i
+ != (pdata->buck2_max_voltage / 1000))
+ i++;
+ printk(KERN_ERR "i:%d, buck2_idx:%d\n", i, max8998->buck2_idx);
+ max8998->buck2_vol[0] = i;
+ ret = max8998_write_reg(i2c, MAX8998_REG_BUCK2_VOLTAGE1, i);
+ if (ret)
+ return ret;
+
+ }