[Maverick SRU][PATCH 1/6] UBUNTU - ARM: igepv2: Adding support for VBUS and overcurrent

[Lee Jones]

On 11/10/10 17:36, Mathieu Poirier wrote:
> SRU Justification:
> 
> Impact: This patch is part of a series of fix for the IGEPv2.  The board
> features multiple GPIOs that must be initialized in order for signals to
> be considered by the processor.  
> 
> Fix: GPIOs for VBUS and over current are requested and their direction
> set in the GPIO setup routine, part of the initial initialization of the
> board.
> 
> Testcase: Booting the board without the fix will see input and outputs
> from the external VBUS power switch and over current ignored.
> 
> 
>>From 452f4fd729b6a464a91ab5e461189f2a0a637fe5 Mon Sep 17 00:00:00 2001
> From: Enric Balletbo i Serra <eballetbo at gmail.com>
> Date: Mon, 11 Oct 2010 10:08:18 -0600
> Subject: [PATCH 1/6] UBUNTU - ARM: igepv2: Adding support for VBUS and overcurrent
> 
> GPIO for various devices are missing from the board initialization.
> This patch adds support for the VBUS and over current gpios.
> Without this patch, input/outputs from these two sources are ignored.
> 
> This work has also been submitted here:
> http://marc.info/?l=linux-omap&m=128628834619169&w=2
> 
> BugLink: https://bugs.launchpad.net/bugs/651589
> 
> Signed-off-by: Enric Balletbo i Serra <eballetbo at gmail.com>
> Signed-off-by: Mathieu J Poirier <mathieu.poirier at canonical.com>
> ---
>  arch/arm/mach-omap2/board-igep0020.c |   16 ++++++++++++++++
>  1 files changed, 16 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
> index d55c57b..0b999f8 100644
> --- a/arch/arm/mach-omap2/board-igep0020.c
> +++ b/arch/arm/mach-omap2/board-igep0020.c
> @@ -274,6 +274,22 @@ static int igep2_twl_gpio_setup(struct device *dev,
>  	igep2_vmmc1_supply.dev = mmc[0].dev;
>  	igep2_vmmc2_supply.dev = mmc[1].dev;
>  
> +	/*
> +	 * REVISIT: need ehci-omap hooks for external VBUS
> +	 * power switch and overcurrent detect
> +	 */
> +	if ((gpio_request(gpio + 1, "GPIO_EHCI_NOC") < 0) ||
> +	    (gpio_direction_input(gpio + 1) < 0))
> +		pr_err("IGEP2: Could not obtain gpio for EHCI NOC");
> +
> +	/*
> +	 * TWL4030_GPIO_MAX + 0 == ledA, GPIO_USBH_CPEN
> +	 * (out, active low)
> +	 */
> +	if ((gpio_request(gpio + TWL4030_GPIO_MAX, "GPIO_USBH_CPEN") < 0) ||
> +	    (gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0) < 0))
> +		pr_err("IGEP2: Could not obtain gpio for USBH_CPEN");
> +
>  	return 0;
>  };
>  
Signed-off-by: Lee Jones <lee.jones at canonical.com>