dm: i2c: Convert uclass to livetree

Update the i2c uclass to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c
index f3184c71d9e84d1ac35393ddacee5f44f1f782d5..1397f34dda0a6d6cf9d7a35eb2c2068e3d945611 100644 (file)
--- a/drivers/i2c/i2c-uclass.c
+++ b/drivers/i2c/i2c-uclass.c
@@ -7,7 +7,6 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
-#include <fdtdec.h>
 #include <i2c.h>
 #include <malloc.h>
 #include <dm/device-internal.h>
@@ -467,18 +466,20 @@ int i2c_deblock(struct udevice *bus)
 }
 
 #if CONFIG_IS_ENABLED(OF_CONTROL)
-int i2c_chip_ofdata_to_platdata(const void *blob, int node,
-                               struct dm_i2c_chip *chip)
+int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip)
 {
-       chip->offset_len = fdtdec_get_int(gd->fdt_blob, node,
-                                         "u-boot,i2c-offset-len", 1);
+       int addr;
+
+       chip->offset_len = dev_read_u32_default(dev, "u-boot,i2c-offset-len",
+                                               1);
        chip->flags = 0;
-       chip->chip_addr = fdtdec_get_int(gd->fdt_blob, node, "reg", -1);
-       if (chip->chip_addr == -1) {
-               debug("%s: I2C Node '%s' has no 'reg' property\n", __func__,
-                     fdt_get_name(blob, node, NULL));
+       addr = dev_read_u32_default(dev, "reg", -1);
+       if (addr == -1) {
+               debug("%s: I2C Node '%s' has no 'reg' property %s\n", __func__,
+                     dev_read_name(dev), dev->name);
                return -EINVAL;
        }
+       chip->chip_addr = addr;
 
        return 0;
 }
@@ -489,8 +490,7 @@ static int i2c_post_probe(struct udevice *dev)
 #if CONFIG_IS_ENABLED(OF_CONTROL)
        struct dm_i2c_bus *i2c = dev_get_uclass_priv(dev);
 
-       i2c->speed_hz = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
-                                    "clock-frequency", 100000);
+       i2c->speed_hz = dev_read_u32_default(dev, "clock-frequency", 100000);
 
        return dm_i2c_set_bus_speed(dev, i2c->speed_hz);
 #else
@@ -503,11 +503,9 @@ static int i2c_child_post_bind(struct udevice *dev)
 #if CONFIG_IS_ENABLED(OF_CONTROL)
        struct dm_i2c_chip *plat = dev_get_parent_platdata(dev);
 
-       if (dev_of_offset(dev) == -1)
+       if (!dev_of_valid(dev))
                return 0;
-
-       return i2c_chip_ofdata_to_platdata(gd->fdt_blob, dev_of_offset(dev),
-                                          plat);
+       return i2c_chip_ofdata_to_platdata(dev, plat);
 #else
        return 0;
 #endif

diff --git a/include/i2c.h b/include/i2c.h
index 2c1643d65067d3400bbf81a0a0b24ae63fc7b32a..7726028044e32c4d2ebeb949283c4564d8cbd0ee 100644 (file)
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -525,8 +525,7 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
  * @node:      Node offset to read from
  * @spi:       Place to put the decoded information
  */
-int i2c_chip_ofdata_to_platdata(const void *blob, int node,
-                               struct dm_i2c_chip *chip);
+int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip);
 
 /**
  * i2c_dump_msgs() - Dump a list of I2C messages