linux-kernel - [PATCH v9 25/25] gpio/omap: handle set

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Date:	Thu, 2 Feb 2012 23:00:51 +0530
From:	Tarun Kanti DebBarma <tarun.kanti@...com>
To:	<linux-omap@...r.kernel.org>
CC:	<grant.likely@...retlab.ca>, <khilman@...com>, <tony@...mide.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, Nishanth Menon <nm@...com>,
	Tarun Kanti DebBarma <tarun.kanti@...com>
Subject: [PATCH v9 25/25] gpio/omap: handle set_dataout reg capable IP on restore

From: Nishanth Menon <nm@...com>

GPIO IP revisions such as those used in OMAP4 have a set_dataout
while the previous revisions used a single dataout register.
Depending on what is available restore the dataout settings
to the right register.

Signed-off-by: Nishanth Menon <nm@...com>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@...com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@...com>
---
 drivers/gpio/gpio-omap.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 81fdbcf..4273401 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1359,7 +1359,12 @@ static void omap_gpio_restore_context(struct gpio_bank *bank)
 				bank->base + bank->regs->risingdetect);
 	__raw_writel(bank->context.fallingdetect,
 				bank->base + bank->regs->fallingdetect);
-	__raw_writel(bank->context.dataout, bank->base + bank->regs->dataout);
+	if (bank->regs->set_dataout && bank->regs->clr_dataout)
+		__raw_writel(bank->context.dataout,
+				bank->base + bank->regs->set_dataout);
+	else
+		__raw_writel(bank->context.dataout,
+				bank->base + bank->regs->dataout);
 	__raw_writel(bank->context.oe, bank->base + bank->regs->direction);
 
 	if (bank->dbck_enable_mask) {
-- 
1.7.0.4

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