[v2,3/5] ARM: OMAP2+: hwmod: Extract no-idle and no-reset info from DT

Commit Message

Rajendra Nayak Oct. 9, 2013, 10:11 a.m. UTC

Now that we have DT bindings to specify which devices should not
be reset and idled during init, make hwmod extract the information
(and store them in internal flags) from Device tree.

Signed-off-by: Rajendra Nayak <[e-mail]>
---
 arch/arm/mach-omap2/omap_hwmod.c |   23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

Comments

Paul Walmsley Oct. 9, 2013, 2:55 p.m. UTC | #1

On Wed, 9 Oct 2013, Rajendra Nayak wrote:

> Now that we have DT bindings to specify which devices should not
> be reset and idled during init, make hwmod extract the information
> (and store them in internal flags) from Device tree.
> 
> Signed-off-by: Rajendra Nayak <[e-mail]>

Thanks, queued.

- Paul

Patch

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index d9ee0ff..b55923a 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2363,11 +2363,11 @@  static struct device_node *of_dev_hwmod_lookup(struct device_node *np,
  * are part of the device's address space can be ioremapped properly.
  * No return value.
  */
-static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)
+static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
+				     struct device_node *np)
 {
 	struct omap_hwmod_addr_space *mem;
 	void __iomem *va_start = NULL;
-	struct device_node *np;
 
 	if (!oh)
 		return;
@@ -2383,12 +2383,10 @@  static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)
 			 oh->name);
 
 		/* Extract the IO space from device tree blob */
-		if (!of_have_populated_dt())
+		if (!np)
 			return;
 
-		np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, "ocp"), oh);
-		if (np)
-			va_start = of_iomap(np, oh->mpu_rt_idx);
+		va_start = of_iomap(np, oh->mpu_rt_idx);
 	} else {
 		va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);
 	}
@@ -2420,12 +2418,16 @@  static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)
 static int __init _init(struct omap_hwmod *oh, void *data)
 {
 	int r;
+	struct device_node *np = NULL;
 
 	if (oh->_state != _HWMOD_STATE_REGISTERED)
 		return 0;
 
+	if (of_have_populated_dt())
+		np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, "ocp"), oh);
+
 	if (oh->class->sysc)
-		_init_mpu_rt_base(oh, NULL);
+		_init_mpu_rt_base(oh, NULL, np);
 
 	r = _init_clocks(oh, NULL);
 	if (r < 0) {
@@ -2433,6 +2435,13 @@  static int __init _init(struct omap_hwmod *oh, void *data)
 		return -EINVAL;
 	}
 
+	if (np) {
+		if (of_find_property(np, "ti,no-reset-on-init", NULL))
+			oh->flags |= HWMOD_INIT_NO_RESET;
+		if (of_find_property(np, "ti,no-idle-on-init", NULL))
+			oh->flags |= HWMOD_INIT_NO_IDLE;
+	}
+
 	oh->_state = _HWMOD_STATE_INITIALIZED;
 
 	return 0;