Re: [PATCH v2 2/5] ARM: dove: add DT parsing for legacy mv643xx_eth

[Andrew Lunn]

On Fri, May 03, 2013 at 01:48:36AM +0200, Sebastian Hesselbarth wrote:
> To allow to move to orion irqchip driver, existing legacy devices
> have to map their irqs. This patch adds init code to map the
> corresponding irqs. It will vanish as soon as there is true device tree
> support for mv643xx_eth.
> 
> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
> ---
> Changelog:
> v1->v2:
> - split off DT changes (Suggested by Jason Cooper)
> 
> Cc: Grant Likely <grant.likely@xxxxxxxxxx>
> Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
> Cc: Rob Landley <rob@xxxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
> Cc: Andrew Lunn <andrew@xxxxxxx>
> Cc: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
> Cc: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
> Cc: Gregory Clement <gregory.clement@xxxxxxxxxxxxxxxxxx>
> Cc: Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx>
> Cc: Jean-Francois Moine <moinejf@xxxxxxx>
> Cc: devicetree-discuss@xxxxxxxxxxxxxxxx
> Cc: linux-doc@xxxxxxxxxxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
>  arch/arm/mach-dove/board-dt.c |   31 ++++++++++++++++++++++++++++++-
>  1 file changed, 30 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-dove/board-dt.c b/arch/arm/mach-dove/board-dt.c
> index fbde1dd..9df6dd7 100644
> --- a/arch/arm/mach-dove/board-dt.c
> +++ b/arch/arm/mach-dove/board-dt.c
> @@ -12,6 +12,7 @@
>  #include <linux/clk-provider.h>
>  #include <linux/clk/mvebu.h>
>  #include <linux/of.h>
> +#include <linux/of_irq.h>
>  #include <linux/of_platform.h>
>  #include <linux/platform_data/usb-ehci-orion.h>
>  #include <asm/hardware/cache-tauros2.h>
> @@ -57,6 +58,34 @@ static struct mv643xx_eth_platform_data dove_dt_ge00_data = {
>  	.phy_addr = MV643XX_ETH_PHY_ADDR_DEFAULT,
>  };
>  
> +#define DOVE_GE00_PHYS_BASE	0xf1070000
> +
> +static void __init dove_legacy_ge00_init(void)
> +{
> +	struct device_node *np = of_find_compatible_node(NULL, NULL,
> +					 "marvell,mv643xx-eth-block");
> +	int irq_sum, irq_err;
> +
> +	if (!np)
> +		return;
> +
> +	irq_sum = irq_of_parse_and_map(np, 0);
> +	if (!irq_sum) {
> +		pr_err("%s: missing sum irq\n", np->full_name);
> +		return;
> +	}
> +
> +	irq_err = irq_of_parse_and_map(np, 1);
> +	if (!irq_err) {
> +		pr_err("%s: missing err irq\n", np->full_name);
> +		return;
> +	}
> +
> +	/* legacy ge00_init wants phys base */
> +	orion_ge00_init(&dove_dt_ge00_data, DOVE_GE00_PHYS_BASE,
> +			irq_sum, irq_err, 1600);
> +}

Hi Sebastian

I know the above code is throw away, but it might help with getting
Kirkwood, Orion5x, mv78xx00 supported if we refactor this code and
move most of it into plat-orion/common.c. I could imaging a function

orion_ge00_irq_init(struct mv643xx_eth_platform_data *eth_data,
                    unsigned long mapbase, unsigned int tx_csum_limit)

which does the irq lookup and then calls orion_ge00_init().


Jason: what is the status of the ethernet driver conversion to DT?
Will it get merged this week, or is it material for the next merge
window?

      Andrew
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