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dm: timer: Convert to livetree

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This updates dm_timer_init to support a live tree and deals with
some fallout (i.e. the need to restructure the code such, that we
don't need multiple discontinuous #if CONFIG_IS_ENABLED blocks).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
Philipp Tomsich
2017-09-11 22:04:10 +02:00
parent 148a139d65
commit b61e8b0c9e
1 changed files with 23 additions and 22 deletions
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45
drivers/timer/timer-uclass.c
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@@ -8,6 +8,7 @@
#include <dm.h> #include <dm.h>
#include <dm/lists.h> #include <dm/lists.h>
#include <dm/device-internal.h> #include <dm/device-internal.h>
#include <dm/root.h>
#include <clk.h> #include <clk.h>
#include <errno.h> #include <errno.h>
#include <timer.h> #include <timer.h>
@@ -54,9 +55,10 @@ static int timer_pre_probe(struct udevice *dev)
if (IS_ERR_VALUE(ret)) if (IS_ERR_VALUE(ret))
return ret; return ret;
uc_priv->clock_rate = ret; uc_priv->clock_rate = ret;
} else } else {
uc_priv->clock_rate = fdtdec_get_int(gd->fdt_blob, uc_priv->clock_rate =
dev_of_offset(dev), "clock-frequency", 0); dev_read_u32_default(dev, "clock-frequency", 0);
}
#endif #endif
return 0; return 0;
@@ -83,9 +85,8 @@ u64 timer_conv_64(u32 count)
int notrace dm_timer_init(void) int notrace dm_timer_init(void)
{ {
__maybe_unused const void *blob = gd->fdt_blob;
struct udevice *dev = NULL; struct udevice *dev = NULL;
int node = -ENOENT; __maybe_unused ofnode node;
int ret; int ret;
if (gd->timer) if (gd->timer)
@@ -93,27 +94,27 @@ int notrace dm_timer_init(void)
#if !CONFIG_IS_ENABLED(OF_PLATDATA) #if !CONFIG_IS_ENABLED(OF_PLATDATA)
/* Check for a chosen timer to be used for tick */ /* Check for a chosen timer to be used for tick */
node = fdtdec_get_chosen_node(blob, "tick-timer"); node = ofnode_get_chosen_node("tick-timer");
if (ofnode_valid(node) &&
uclass_get_device_by_ofnode(UCLASS_TIMER, node, &dev)) {
/*
* If the timer is not marked to be bound before
* relocation, bind it anyway.
*/
if (!lists_bind_fdt(dm_root(), node, &dev)) {
ret = device_probe(dev);
if (ret)
return ret;
}
}
#endif #endif
if (node < 0) {
/* No chosen timer, trying first available timer */ if (!dev) {
/* Fall back to the first available timer */
ret = uclass_first_device_err(UCLASS_TIMER, &dev); ret = uclass_first_device_err(UCLASS_TIMER, &dev);
if (ret) if (ret)
return ret; return ret;
} else {
if (uclass_get_device_by_of_offset(UCLASS_TIMER, node, &dev)) {
/*
* If the timer is not marked to be bound before
* relocation, bind it anyway.
*/
if (node > 0 &&
!lists_bind_fdt(gd->dm_root, offset_to_ofnode(node),
&dev)) {
ret = device_probe(dev);
if (ret)
return ret;
}
}
} }
if (dev) { if (dev) {