From: Przemyslaw Marczak Date: Wed, 13 May 2015 11:38:31 +0000 (+0200) Subject: sandbox: i2c: search child emul dev and check its uclass id X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=a989ec8dd4bb548708220146391d5ed7b575331f;p=u-boot.git sandbox: i2c: search child emul dev and check its uclass id The function get_emul() in sandbox i2c bus driver, always returns first child as i2c emul device. This may only work for i2c devices with a single child, which is an only i2c emul device. In case when i2c device has more than one child (e.g. PMIC), and one is i2c emul, then the function should search it by check uclass id for each child. This patch add this change to the get_emul(). Signed-off-by: Przemyslaw Marczak Cc: Simon Glass Acked-by: Simon Glass Tested on sandbox: Tested-by: Simon Glass --- diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c index dd1c7e59e4..2c84c41643 100644 --- a/drivers/i2c/sandbox_i2c.c +++ b/drivers/i2c/sandbox_i2c.c @@ -26,6 +26,7 @@ static int get_emul(struct udevice *dev, struct udevice **devp, struct dm_i2c_ops **opsp) { struct dm_i2c_chip *plat; + struct udevice *child; int ret; *devp = NULL; @@ -37,9 +38,22 @@ static int get_emul(struct udevice *dev, struct udevice **devp, if (ret) return ret; - ret = device_get_child(dev, 0, &plat->emul); - if (ret) - return ret; + for (device_find_first_child(dev, &child); child; + device_find_next_child(&child)) { + if (device_get_uclass_id(child) != UCLASS_I2C_EMUL) + continue; + + ret = device_probe(child); + if (ret) + return ret; + + break; + } + + if (child) + plat->emul = child; + else + return -ENODEV; } *devp = plat->emul; *opsp = i2c_get_ops(plat->emul);