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dm: i2c: Convert uclass to livetree

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Update the i2c uclass to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-05-18 20:09:30 -06:00
parent a7d0021063
commit 1704308eb6
2 changed files with 14 additions and 17 deletions
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28
drivers/i2c/i2c-uclass.c
View file

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

3
include/i2c.h
View file

@ -525,8 +525,7 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
* @node: Node offset to read from * @node: Node offset to read from
* @spi: Place to put the decoded information * @spi: Place to put the decoded information
*/ */
int i2c_chip_ofdata_to_platdata(const void *blob, int node, int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip);
struct dm_i2c_chip *chip);
/** /**
* i2c_dump_msgs() - Dump a list of I2C messages * i2c_dump_msgs() - Dump a list of I2C messages