Re: [PATCH 2/6] raspberry-pi: add leds support

[Sascha Hauer <s.hauer@pengutronix.de>]

On Mon, Jan 19, 2015 at 02:08:58AM +0400, Antony Pavlov wrote:
> On Tue, 13 Jan 2015 07:33:06 +0100
> Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> wrote:
> 
> > Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> > ---
> >  arch/arm/boards/raspberry-pi/rpi.c | 55 ++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 55 insertions(+)
> > 
> > diff --git a/arch/arm/boards/raspberry-pi/rpi.c b/arch/arm/boards/raspberry-pi/rpi.c
> > index ae1e92a..81b485e 100644
> > --- a/arch/arm/boards/raspberry-pi/rpi.c
> > +++ b/arch/arm/boards/raspberry-pi/rpi.c
> ...
> > @@ -160,6 +205,15 @@ unknown_rev:
> >  	barebox_set_model("RaspberryPi (BCM2835/ARM1176JZF-S)");
> >  }
> >  
> > +static void rpi_model_init(void)
> > +{
> > +	if (!models[rpi_board_rev].init)
> > +		return;
> 
> Houston, we have a problem here.
> Please see current arch/arm/boards/raspberry-pi/rpi.c:
> 
> /* See comments in mbox.h for data source */
> static const struct {
> 	const char *name;
> 	bool has_onboard_eth;
> 	void (*init)(void);
> } models[] = {
> 	RPI_MODEL(0, "Unknown model", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_I2C0_2, "Model B (no P5)", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_I2C0_3, "Model B (no P5)", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_I2C1_4, "Model B", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_I2C1_5, "Model B", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_I2C1_6, "Model B", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_A_7, "Model A", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_A_8, "Model A", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_A_9, "Model A", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_REV2_d, "Model B rev2", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_REV2_e, "Model B rev2", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_REV2_f, "Model B rev2", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_B_PLUS, "Model B+", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_CM, "Compute Module", NULL),
> 	RPI_MODEL(BCM2835_BOARD_REV_A_PLUS, "Model A+", NULL),
> };
> 
> All inits are NULLs!
> 
> Have we any chance to run rpi_add_led()?

Hm, no, this is never called. Maybe rpi_model_init() should look like
this instead?

static void rpi_model_init(void)
{
	if (!models[rpi_board_rev].init)
		models[rpi_board_rev].init();

	rpi_add_led();
}

But then again, why is rpi_add_led called from rpi_model_init()?

Sascha

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