Merge tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

ti-sysc driver related changes for omap variants

This series improves the ti-sysc interconnect target module driver to
the point where a most of SoC can be booted with interconnect target
module data configured in device tree instead of legacy platform data.
The related device tree changes need some more work though, and can
wait for v4.19. Also some drivers using nested interconnects like DSS
need more work.

We can now remove the unused pm-noop code that is not doing anything
any longer. And we can now initialize things for PM and display pdata
later to prepare things for using ti-sysc driver.

We also need to add  some more quirk handling so we can boot both with
platform data and dts data.

* tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Show module information for suspend if DEBUG is enabled
  bus: ti-sysc: Tag sdio and wdt with legacy mode for suspend
  bus: ti-sysc: Detect UARTs for SYSC_QUIRK_LEGACY_IDLE quirk on omap4
  bus: ti-sysc: Detect omap4 type timers for quirk
  bus: ti-sysc: Add initial support for external resets
  bus: ti-sysc: Improve suspend and resume handling
  bus: ti-sysc: Tag some modules resource providers for noirq suspend
  bus: ti-sysc: Add handling for clkctrl opt clocks
  bus: ti-sysc: Make child clock alias handling more generic
  bus: ti-sysc: Handle simple-bus for nested children
  ARM: OMAP2+: Make display related init into device_initcall
  ARM: OMAP2+: Initialize SoC PM later
  ARM: OMAP2+: Only probe SDMA via ti-sysc if configured in dts
  ARM: OMAP2+: Use signed value for sysc register offsets
  ARM: OMAP2+: Allow using ti-sysc for system timers
  ARM: OMAP2+: Drop unused pm-noop

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 52 insertions, 16 deletions

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 4fb4dc2..5a70ab6 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -50,7 +50,6 @@
 #include "omap_device.h"
 #include <plat/counter-32k.h>
 #include <clocksource/timer-ti-dm.h>
-#include "omap-pm.h"
 
 #include "soc.h"
 #include "common.h"
@@ -168,6 +167,43 @@ static const struct of_device_id omap_timer_match[] __initconst = {
 	{ }
 };
 
+static int omap_timer_add_disabled_property(struct device_node *np)
+{
+	struct property *prop;
+
+	prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+	if (!prop)
+		return -ENOMEM;
+
+	prop->name = "status";
+	prop->value = "disabled";
+	prop->length = strlen(prop->value);
+
+	return of_add_property(np, prop);
+}
+
+static int omap_timer_update_dt(struct device_node *np)
+{
+	int error = 0;
+
+	if (!of_device_is_compatible(np, "ti,omap-counter32k")) {
+		error = omap_timer_add_disabled_property(np);
+		if (error)
+			return error;
+	}
+
+	/* No parent interconnect target module configured? */
+	if (of_get_property(np, "ti,hwmods", NULL))
+		return error;
+
+	/* Tag parent interconnect target module disabled */
+	error = omap_timer_add_disabled_property(np->parent);
+	if (error)
+		return error;
+
+	return 0;
+}
+
 /**
  * omap_get_timer_dt - get a timer using device-tree
  * @match	- device-tree match structure for matching a device type
@@ -183,6 +219,7 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id *
 						     const char *property)
 {
 	struct device_node *np;
+	int error;
 
 	for_each_matching_node(np, match) {
 		if (!of_device_is_available(np))
@@ -197,17 +234,9 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id *
 				  of_get_property(np, "ti,timer-secure", NULL)))
 			continue;
 
-		if (!of_device_is_compatible(np, "ti,omap-counter32k")) {
-			struct property *prop;
+		error = omap_timer_update_dt(np);
+		WARN(error, "%s: Could not update dt: %i\n", __func__, error);
 
-			prop = kzalloc(sizeof(*prop), GFP_KERNEL);
-			if (!prop)
-				return NULL;
-			prop->name = "status";
-			prop->value = "disabled";
-			prop->length = strlen(prop->value);
-			of_add_property(np, prop);
-		}
 		return np;
 	}
 
@@ -266,8 +295,12 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 		return -ENODEV;
 
 	of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
-	if (!oh_name)
-		return -ENODEV;
+	if (!oh_name) {
+		of_property_read_string_index(np->parent, "ti,hwmods", 0,
+					      &oh_name);
+		if (!oh_name)
+			return -ENODEV;
+	}
 
 	timer->irq = irq_of_parse_and_map(np, 0);
 	if (!timer->irq)
@@ -419,9 +452,12 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
 	if (!np)
 		return -ENODEV;
 
-	of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
-	if (!oh_name)
-		return -ENODEV;
+	of_property_read_string_index(np->parent, "ti,hwmods", 0, &oh_name);
+	if (!oh_name) {
+		of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
+		if (!oh_name)
+			return -ENODEV;
+	}
 
 	/*
 	 * First check hwmod data is available for sync32k counter