From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tarun Kanti DebBarma Subject: [PATCH v9 22/31] gpio/omap: save and restore debounce registers Date: Wed, 14 Dec 2011 01:50:24 +0530 Message-ID: <1323807633-23713-23-git-send-email-tarun.kanti@ti.com> References: <1323807633-23713-1-git-send-email-tarun.kanti@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from devils.ext.ti.com ([198.47.26.153]:45714 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755884Ab1LMUUw (ORCPT ); Tue, 13 Dec 2011 15:20:52 -0500 In-Reply-To: <1323807633-23713-1-git-send-email-tarun.kanti@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Cc: khilman@ti.com, tony@atomide.com, linux-arm-kernel@lists.infradead.org, Nishanth Menon , Tarun Kanti DebBarma From: Nishanth Menon GPIO debounce registers need to be saved and restored for proper functioning of driver. Signed-off-by: Nishanth Menon tarun.kanti@ti.com: Debounce context save is moved to _set_gpio_debounce() as part of dynamic context save to remove overhead. Signed-off-by: Tarun Kanti DebBarma Reviewed-by: Santosh Shilimkar --- drivers/gpio/gpio-omap.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 8fba691..6f8a7d3 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -44,6 +44,8 @@ struct gpio_regs { u32 risingdetect; u32 fallingdetect; u32 dataout; + u32 debounce; + u32 debounce_en; }; struct gpio_bank { @@ -231,6 +233,10 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio, * that point. Therefore we have to enable dbck here. */ _gpio_dbck_enable(bank); + if (bank->dbck_enable_mask) { + bank->context.debounce = debounce; + bank->context.debounce_en = val; + } } static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio, @@ -1372,6 +1378,12 @@ static void omap_gpio_restore_context(struct gpio_bank *bank) __raw_writel(bank->context.fallingdetect, bank->base + bank->regs->fallingdetect); __raw_writel(bank->context.dataout, bank->base + bank->regs->dataout); + if (bank->dbck_enable_mask) { + __raw_writel(bank->context.debounce, bank->base + + bank->regs->debounce); + __raw_writel(bank->context.debounce_en, + bank->base + bank->regs->debounce_en); + } } #else #define omap_gpio_suspend NULL -- 1.7.0.4