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PMIC: MAX77686: Add FDT Support

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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>
This commit is contained in:
Rajeshwari Shinde 2013-01-08 21:03:40 +00:00 committed by Minkyu Kang
parent e00be0d30b
commit 4050f0700f
1 changed files with 34 additions and 3 deletions
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37
drivers/power/pmic/pmic_max77686.c
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@ -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;
}