On 07/11/2012 02:00 PM, Simon Glass wrote:
Hi Michal,

On Wed, Jul 11, 2012 at 1:21 PM, Michal Simek <mon...@monstr.eu 
<mailto:mon...@monstr.eu>> wrote:

    On 07/11/2012 12:59 PM, Simon Glass wrote:

        Hi,


        On Wed, Jul 11, 2012 at 12:43 PM, Michal Simek <mon...@monstr.eu 
<mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>> 
wrote:

             On 07/11/2012 11:59 AM, Simon Glass wrote:

                 Hi Michal,


                 On Wed, Jul 11, 2012 at 10:19 AM, Michal Simek <mon...@monstr.eu <mailto:mon...@monstr.eu> 
<mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu> 
<mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>>> wrote:

                      On 07/10/2012 11:13 PM, Simon Glass wrote:

                          Hi Michal,


                          On Tue, Jul 10, 2012 at 11:56 AM, Michal Simek <mon...@monstr.eu <mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu 
<mailto:mon...@monstr.eu>> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>> 
<mailto:mon...@monstr.eu <mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>> <mailto:mon...@monstr.eu 
<mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>>>> wrote:

                               Also include arch specific gpio.h which can 
contain
                               gpio function implementation.

                               Signed-off-by: Michal Simek <mon...@monstr.eu <mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>> 
<mailto:mon...@monstr.eu <mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>> <mailto:mon...@monstr.eu 
<mailto:mon...@monstr.eu> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>> <mailto:mon...@monstr.eu <mailto:mon...@monstr.eu> 
<mailto:mon...@monstr.eu <mailto:mon...@monstr.eu>>>>>
                               CC: Simon Glass <s...@chromium.org <mailto:s...@chromium.org> <mailto:s...@chromium.org <mailto:s...@chromium.org>> 
<mailto:s...@chromium.org <mailto:s...@chromium.org> <mailto:s...@chromium.org <mailto:s...@chromium.org>>> <mailto:s...@chromium.org 
<mailto:s...@chromium.org> <mailto:s...@chromium.org <mailto:s...@chromium.org>> <mailto:s...@chromium.org <mailto:s...@chromium.org> 
<mailto:s...@chromium.org <mailto:s...@chromium.org>>>>>



                               ---
                                 lib/fdtdec.c |    1 +
                                 1 files changed, 1 insertions(+), 0 
deletions(-)

                               diff --git a/lib/fdtdec.c b/lib/fdtdec.c
                               index cc09e06..b12eb77 100644
                               --- a/lib/fdtdec.c
                               +++ b/lib/fdtdec.c
                               @@ -25,6 +25,7 @@
                                 #include <fdtdec.h>

                                 /* we need the generic GPIO interface here */
                               +#include <asm/gpio.h>


                          Can you not instead support the generic functions? 
What are you missing from from there that fdtdec.c needs?


                      OK. The problem is with fdtdec_setup_gpio function where 
you called gpio_request which
                      is gpio specific function which you haven't included.

                      The most archs have this defined in 
arch/<cpuname>/include/asm/______gpio.h.




                 This is there in my tree. Please see commit:

                 5f533aeb gpio: Modify common gpio.h to more closely match Linux


             This is generic gpio cleanup but I don't think this is the same 
thing.
             I think you should get some warnings for fdtdec compilation around 
missing gpio_request
             declaration or you include gpio.h in any other header file which 
is in fdtdec.c/h.


        Sorry I don't really understand that. For me fdtdec.c has #include 
<asm-generic/gpio.h> and that is enough to get gpio_request(). Can you please 
advise what warning you see and for what board?


    Microblaze:
    lib/libgeneric.o: In function `fdtdec_setup_gpio':
    /mnt/projects/u-boot/lib/__fdtdec.c:477: undefined reference to 
`gpio_request'

    The same error will be for nios2, openrisc and blackfin because they define
    gpio_request as static inline function in arch/<arch>/include/asm/gpio.h

    Because I think there should be asm/gpio.h included which can include 
asm-generic/gpio.h
    (this is arm case).


OK I see, that makes sense.


    diff --git a/lib/fdtdec.c b/lib/fdtdec.c
    index cc09e06..50a5061 100644
    --- a/lib/fdtdec.c
    +++ b/lib/fdtdec.c
    @@ -25,7 +25,7 @@

      #include <fdtdec.h>

      /* we need the generic GPIO interface here */


Can we remove this comment then?

Yes, we can! :-)

I will create proper patch.

Thanks,
Michal



--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
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