From ea9dc35aab9fd9e87cbb73a3a63fcbea4d6378c3 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Thu, 28 Feb 2019 00:26:55 +0530 Subject: reset: Get the RESET by index without device Getting a RESET by index with device is not straight forward for some use-cases like handling clock operations for child node in parent driver. So we need to process the child node in parent probe via ofnode and process RESET operation for child without udevice but with ofnode. So add reset_get_by_index_nodev() and move the common code in reset_get_by_index_tail() to use for reset_get_by_index() Cc: Stephen Warren Signed-off-by: Jagan Teki Reviewed-by: Simon Glass --- drivers/reset/reset-uclass.c | 53 ++++++++++++++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 17 deletions(-) (limited to 'drivers/reset') diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c index 89e39c6b5a..ee1a423ffb 100644 --- a/drivers/reset/reset-uclass.c +++ b/drivers/reset/reset-uclass.c @@ -29,41 +29,34 @@ static int reset_of_xlate_default(struct reset_ctl *reset_ctl, return 0; } -int reset_get_by_index(struct udevice *dev, int index, - struct reset_ctl *reset_ctl) +static int reset_get_by_index_tail(int ret, ofnode node, + struct ofnode_phandle_args *args, + const char *list_name, int index, + struct reset_ctl *reset_ctl) { - struct ofnode_phandle_args args; - int ret; struct udevice *dev_reset; struct reset_ops *ops; - debug("%s(dev=%p, index=%d, reset_ctl=%p)\n", __func__, dev, index, - reset_ctl); + assert(reset_ctl); reset_ctl->dev = NULL; - - ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0, - index, &args); - if (ret) { - debug("%s: fdtdec_parse_phandle_with_args() failed: %d\n", - __func__, ret); + if (ret) return ret; - } - ret = uclass_get_device_by_ofnode(UCLASS_RESET, args.node, + ret = uclass_get_device_by_ofnode(UCLASS_RESET, args->node, &dev_reset); if (ret) { debug("%s: uclass_get_device_by_ofnode() failed: %d\n", __func__, ret); - debug("%s %d\n", ofnode_get_name(args.node), args.args[0]); + debug("%s %d\n", ofnode_get_name(args->node), args->args[0]); return ret; } ops = reset_dev_ops(dev_reset); reset_ctl->dev = dev_reset; if (ops->of_xlate) - ret = ops->of_xlate(reset_ctl, &args); + ret = ops->of_xlate(reset_ctl, args); else - ret = reset_of_xlate_default(reset_ctl, &args); + ret = reset_of_xlate_default(reset_ctl, args); if (ret) { debug("of_xlate() failed: %d\n", ret); return ret; @@ -78,6 +71,32 @@ int reset_get_by_index(struct udevice *dev, int index, return 0; } +int reset_get_by_index(struct udevice *dev, int index, + struct reset_ctl *reset_ctl) +{ + struct ofnode_phandle_args args; + int ret; + + ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0, + index, &args); + + return reset_get_by_index_tail(ret, dev_ofnode(dev), &args, "resets", + index > 0, reset_ctl); +} + +int reset_get_by_index_nodev(ofnode node, int index, + struct reset_ctl *reset_ctl) +{ + struct ofnode_phandle_args args; + int ret; + + ret = ofnode_parse_phandle_with_args(node, "resets", "#reset-cells", 0, + index > 0, &args); + + return reset_get_by_index_tail(ret, node, &args, "resets", + index > 0, reset_ctl); +} + int reset_get_bulk(struct udevice *dev, struct reset_ctl_bulk *bulk) { int i, ret, err, count; -- cgit v1.2.1