From mboxrd@z Thu Jan 1 00:00:00 1970 From: jhnikula@gmail.com (Jarkko Nikula) Date: Thu, 12 May 2011 14:28:23 +0300 Subject: [PATCH 2/2] omap: rx51: Don't power up speaker amplifier at bootup In-Reply-To: <1305199703-32589-1-git-send-email-jhnikula@gmail.com> References: <1305199703-32589-1-git-send-email-jhnikula@gmail.com> Message-ID: <1305199703-32589-2-git-send-email-jhnikula@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Speaker amplifier is accidentally powered up in early TWL gpio setup. This causes a few mA of needless battery current consumption. Without this patch the amplifier can be shutdown only by having one active audio playback and shutdown cycle to speaker output. Thanks to Kalle Jokiniemi for noticing the issue. Signed-off-by: Jarkko Nikula Cc: Kalle Jokiniemi --- arch/arm/mach-omap2/board-rx51-peripherals.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c index 8242e99..0374562 100644 --- a/arch/arm/mach-omap2/board-rx51-peripherals.c +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c @@ -561,7 +561,7 @@ static int rx51_twlgpio_setup(struct device *dev, unsigned gpio, unsigned n) gpio_request(gpio + 6, "backlight_pwm"); gpio_direction_output(gpio + 6, 0); gpio_request(gpio + 7, "speaker_en"); - gpio_direction_output(gpio + 7, 1); + gpio_direction_output(gpio + 7, 0); return 0; } -- 1.7.4.4