From mboxrd@z Thu Jan 1 00:00:00 1970 From: "eric miao" Subject: [PATCH 6/12] pxa: add debounce_interval configuration to the keypad platform data Date: Wed, 23 Jan 2008 15:28:37 +0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.183]:60584 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752646AbYAWH2h (ORCPT ); Wed, 23 Jan 2008 02:28:37 -0500 Received: by wa-out-1112.google.com with SMTP id v27so4885882wah.23 for ; Tue, 22 Jan 2008 23:28:37 -0800 (PST) Content-Disposition: inline Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-input@vger.kernel.org Cc: Dmitry Torokhov >>From 0a2922e52d091f46dafb22aca227dbf3b573153f Mon Sep 17 00:00:00 2001 From: eric miao Date: Wed, 23 Jan 2008 13:26:57 +0800 Subject: [PATCH] pxa: add debounce_interval configuration to the keypad platform data Currently, only one debounce_interval is introduced for both direct and matrix keys. This is true in most cases, although the keypad controller supports different debounce for direct/matrix keys. Some platforms do require this to be tuned, instead of the default reset value of 100ms. Rotary encoder will always use zero debounce time for now to achieve certain sensitivity. Signed-off-by: eric miao --- drivers/input/keyboard/pxa27x_keypad.c | 1 + include/asm-arm/arch-pxa/pxa27x_keypad.h | 6 ++++++ 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c index ceaf1e0..6224c2f 100644 --- a/drivers/input/keyboard/pxa27x_keypad.c +++ b/drivers/input/keyboard/pxa27x_keypad.c @@ -357,6 +357,7 @@ static void pxa27x_keypad_config(struct pxa27x_keypad *keypad) keypad_writel(KPC, kpc | KPC_RE_ZERO_DEB); keypad_writel(KPREC, DEFAULT_KPREC); + keypad_writel(KPKDI, pdata->debounce_interval); } static int pxa27x_keypad_open(struct input_dev *dev) diff --git a/include/asm-arm/arch-pxa/pxa27x_keypad.h b/include/asm-arm/arch-pxa/pxa27x_keypad.h index 6b83232..644f760 100644 --- a/include/asm-arm/arch-pxa/pxa27x_keypad.h +++ b/include/asm-arm/arch-pxa/pxa27x_keypad.h @@ -19,6 +19,9 @@ * * 3. rotary can be either interpreted as a relative input event (e.g. * REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT) + * + * 4. matrix key and direct key will use the same debounce_interval by + * default, which should be sufficient in most cases */ struct pxa27x_keypad_platform_data { @@ -43,6 +46,9 @@ struct pxa27x_keypad_platform_data { int rotary1_rel_code; int rotary1_up_key; int rotary1_down_key; + + /* key debounce interval */ + unsigned int debounce_interval; }; #define KEY(row, col, val) (((row) << 28) | ((col) << 24) | (val)) -- 1.5.2.5.GIT -- Cheers - eric