PMIC: MAX77686: Add FDT Support

This patch adds fdt support to MAX77686.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/drivers/power/pmic/pmic_max77686.c b/drivers/power/pmic/pmic_max77686.c
index fce0183..7fcb4c0 100644 (file)
--- a/drivers/power/pmic/pmic_max77686.c
+++ b/drivers/power/pmic/pmic_max77686.c
@@ -22,10 +22,14 @@
  */
 
 #include <common.h>
+#include <fdtdec.h>
+#include <i2c.h>
 #include <power/pmic.h>
 #include <power/max77686_pmic.h>
 #include <errno.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 int pmic_init(unsigned char bus)
 {
        static const char name[] = "MAX77686_PMIC";
@@ -36,13 +40,40 @@ int pmic_init(unsigned char bus)
                return -ENOMEM;
        }
 
-       puts("Board PMIC init\n");
+#ifdef CONFIG_OF_CONTROL
+       const void *blob = gd->fdt_blob;
+       int node, parent;
+
+       node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
+       if (node < 0) {
+               debug("PMIC: No node for PMIC Chip in device tree\n");
+               debug("node = %d\n", node);
+               return -1;
+       }
+
+       parent = fdt_parent_offset(blob, node);
+       if (parent < 0) {
+               debug("%s: Cannot find node parent\n", __func__);
+               return -1;
+       }
+
+       p->bus = i2c_get_bus_num_fdt(parent);
+       if (p->bus < 0) {
+               debug("%s: Cannot find I2C bus\n", __func__);
+               return -1;
+       }
+       p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
+#else
+       p->bus = bus;
+       p->hw.i2c.addr = MAX77686_I2C_ADDR;
+#endif
+
        p->name = name;
        p->interface = PMIC_I2C;
        p->number_of_regs = PMIC_NUM_OF_REGS;
-       p->hw.i2c.addr = MAX77686_I2C_ADDR;
        p->hw.i2c.tx_num = 1;
-       p->bus = bus;
+
+       puts("Board PMIC init\n");
 
        return 0;
 }