linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: paul@pwsan.com (Paul Walmsley)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 10/11] OMAP: hwmod: Force a softreset during _setup
Date: Tue, 21 Sep 2010 10:34:53 -0600	[thread overview]
Message-ID: <20100921163452.20258.37165.stgit@twilight.localdomain> (raw)
In-Reply-To: <20100921163021.20258.87587.stgit@twilight.localdomain>

From: Benoit Cousson <b-cousson@ti.com>

Force the softreset of every IPs during the _setup phase.
IPs that cannot support softreset or that should not
be reset must set the HWMOD_INIT_NO_RESET flag in the
hwmod struct.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
---
 arch/arm/mach-omap2/omap_hwmod.c |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index f4a569c..3e90984 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -980,8 +980,8 @@ static int _reset(struct omap_hwmod *oh)
 
 	/* clocks must be on for this operation */
 	if (oh->_state != _HWMOD_STATE_ENABLED) {
-		WARN(1, "omap_hwmod: %s: reset can only be entered from "
-		     "enabled state\n", oh->name);
+		pr_warning("omap_hwmod: %s: reset can only be entered from "
+			   "enabled state\n", oh->name);
 		return -EINVAL;
 	}
 
@@ -998,8 +998,8 @@ static int _reset(struct omap_hwmod *oh)
 			  MAX_MODULE_SOFTRESET_WAIT, c);
 
 	if (c == MAX_MODULE_SOFTRESET_WAIT)
-		WARN(1, "omap_hwmod: %s: softreset failed (waited %d usec)\n",
-		     oh->name, MAX_MODULE_SOFTRESET_WAIT);
+		pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
+			   oh->name, MAX_MODULE_SOFTRESET_WAIT);
 	else
 		pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
 
@@ -1198,12 +1198,12 @@ static int _setup(struct omap_hwmod *oh, void *data)
 	}
 
 	if (!(oh->flags & HWMOD_INIT_NO_RESET)) {
+		_reset(oh);
+
 		/*
-		 * XXX Do the OCP_SYSCONFIG bits need to be
-		 * reprogrammed after a reset?  If not, then this can
-		 * be removed.  If they do, then probably the
-		 * _omap_hwmod_enable() function should be split to avoid the
-		 * rewrite of the OCP_SYSCONFIG register.
+		 * OCP_SYSCONFIG bits need to be reprogrammed after a softreset.
+		 * The _omap_hwmod_enable() function should be split to
+		 * avoid the rewrite of the OCP_SYSCONFIG register.
 		 */
 		if (oh->class->sysc) {
 			_update_sysc_cache(oh);

  parent reply	other threads:[~2010-09-21 16:34 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-21 16:34 [PATCH 00/11] OMAP: hwmod: core patches for 2.6.37 Paul Walmsley
2010-09-21 16:34 ` [PATCH 01/11] OMAP: hwmod: Rename dma_ch to dma_req Paul Walmsley
2010-09-21 16:34 ` [PATCH 02/11] OMAP: hwmod: Do not disable clocks if hwmod already in idle Paul Walmsley
2010-09-21 16:34 ` [PATCH 03/11] OMAP: hwmod: Fix omap_hwmod_reset wrong state test Paul Walmsley
2010-09-21 16:34 ` [PATCH 04/11] OMAP4: prcm: Fix global warm reset bit position Paul Walmsley
2010-09-21 16:34 ` [PATCH 05/11] [PATCH] OMAP: hwmod: separate list locking and hwmod hardware locking Paul Walmsley
2010-09-21 16:34 ` [PATCH 06/11] OMAP4: prcm: Add temporarily helper functions for rmw and read inside the PRM Paul Walmsley
2010-09-21 16:34 ` [PATCH 07/11] OMAP4: PRM: add module hard reset support Paul Walmsley
2010-09-21 16:34 ` [PATCH 08/11] OMAP2/3: " Paul Walmsley
2010-09-21 16:34 ` [PATCH 09/11] OMAP: hwmod: Add hardreset management support Paul Walmsley
2010-09-21 16:34 ` Paul Walmsley [this message]
2010-09-21 16:34 ` [PATCH 11/11] OMAP: hwmod: add an hardreset API for use by other core code Paul Walmsley

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20100921163452.20258.37165.stgit@twilight.localdomain \
    --to=paul@pwsan.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).