From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oleksandr G Zhadan <oleks@arcturusnetworks.com>
Date: Fri, 27 Mar 2015 10:51:32 -0400
Subject: [U-Boot] [PATCH 1/2] mpc85xx gpio related header files changes
 to compile common cmd_gpio.c
In-Reply-To: <1427415986.13051.48.camel@transmode.se>
References: <55147741.80406@arcturusnetworks.com>
 <1427415986.13051.48.camel@transmode.se>
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To: u-boot@lists.denx.de

Extra gpio bank argument at low level may be discussable, but IMPO we 
should not brake standard int gpio_set_value(unsigned gpio, int value) 
definition.

And the reason of this patch is to fix:

1. Incompatibility in functions gpio_free() and gpio_set_value() 
definitions between <asm/gpio.h> and <asm-generic/gpio.h> (void vs int)

2. Compilation error when build common/cmd_gpio.c for mpc85xx (p1020)

On 03/26/2015 08:26 PM, Joakim Tjernlund wrote:
> On Thu, 2015-03-26 at 17:16 -0400, Oleksandr G Zhadan wrote:
>> From: Oleksandr Zhadan <oleks@arcturusnetworks.com>
>>
>> Signed-off-by: Oleksandr Zhadan <oleks@arcturusnetworks.com>
>> Signed-off-by: Michael Durrant <mdurrant@arcturusnetworks.com>
>> ---
>>
>>    arch/powerpc/include/asm/arch-mpc85xx/gpio.h |    2 ++
>>    arch/powerpc/include/asm/mpc85xx_gpio.h      |    6 ++++--
>>    2 files changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/powerpc/include/asm/arch-mpc85xx/gpio.h
>> b/arch/powerpc/include/asm/arch-mpc85xx/gpio.h
>> index 8beed30..71794a8 100644
>> --- a/arch/powerpc/include/asm/arch-mpc85xx/gpio.h
>> +++ b/arch/powerpc/include/asm/arch-mpc85xx/gpio.h
>> @@ -12,4 +12,6 @@
>>    #ifndef __ASM_ARCH_MX85XX_GPIO_H
>>    #define __ASM_ARCH_MX85XX_GPIO_H
>>
>> +#include <asm/mpc85xx_gpio.h>
>> +
>>    #endif
>> diff --git a/arch/powerpc/include/asm/mpc85xx_gpio.h
>> b/arch/powerpc/include/asm/mpc85xx_gpio.h
>> index 87bb4a0..1d0dad4 100644
>> --- a/arch/powerpc/include/asm/mpc85xx_gpio.h
>> +++ b/arch/powerpc/include/asm/mpc85xx_gpio.h
>> @@ -72,9 +72,10 @@ static inline int gpio_request(unsigned gpio, const
>> char *label)
>>        return 0;
>>    }
>>
>> -static inline void gpio_free(unsigned gpio)
>> +static inline int gpio_free(unsigned gpio)
>>    {
>>        /* Compatibility shim */
>> +    return 0;
>>    }
>>
>>    static inline int gpio_direction_input(unsigned gpio)
>> @@ -97,12 +98,13 @@ static inline int gpio_get_value(unsigned gpio)
>>        return !!mpc85xx_gpio_get(1U << gpio);
>>    }
>>
>> -static inline void gpio_set_value(unsigned gpio, int value)
>> +static inline int gpio_set_value(unsigned gpio, int value)
>>    {
>>        if (value)
>>            mpc85xx_gpio_set_high(1U << gpio);
>>        else
>>            mpc85xx_gpio_set_low(1U << gpio);
>> +    return 0;
>>    }
>
> mpc85xx_gpio_xxx really needs an extra bank argument such as:
> static inline void my_mpc85xx_gpio_set(unsigned int bank, unsigned int mask,
>                                         unsigned int dir, unsigned int val)
> {
>          ccsr_gpio_t *gpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR +
>                                       bank * 0x1000);
> ....
>
> so one can choose which GPIO bank to use
>
>   Jocke
>
>


-- 
Oleksandr Zhadan
Arcturus Networks
T 416 621-0125 x235
F 416 621-0190