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Message-ID: <20090220204320.GC7414@atomide.com>
Date: Fri, 20 Feb 2009 12:43:21 -0800
From: Tony Lindgren <tony@...mide.com>
To: Steve Sakoman <sakoman@...il.com>
Cc: linux-omap <linux-omap@...r.kernel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH] ARM: Add SMSC911X support to Overo platform (V2)
* Steve Sakoman <sakoman@...il.com> [090201 22:28]:
> Gumstix will soon be shipping a variant of their Summit board that
> includes an SMSC LAN9221 ethernet interface. This patch provides
> support via the smsc911x driver when enabled in kernel config.
>
> The Overo defconfig is not updated since the LAN9221 is an option
> not present on all systems.
Adding this to omap3-upstream and pushing to linux-omap.
Tony
> Signed-off-by: Steve Sakoman <steve@...oman.com>
> ---
> arch/arm/mach-omap2/board-overo.c | 62 +++++++++++++++++++++++++
> arch/arm/plat-omap/include/mach/board-overo.h | 3 +
> 2 files changed, 65 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-overo.c
> b/arch/arm/mach-omap2/board-overo.c
> index 9995ac2..032a2c9 100644
> --- a/arch/arm/mach-omap2/board-overo.c
> +++ b/arch/arm/mach-omap2/board-overo.c
> @@ -55,6 +55,67 @@
> #define GPMC_CS0_BASE 0x60
> #define GPMC_CS_SIZE 0x30
>
> +#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
> +
> +#include <linux/smsc911x.h>
> +
> +static struct resource overo_smsc911x_resources[] = {
> + {
> + .name = "smsc911x-memory",
> + .flags = IORESOURCE_MEM,
> + },
> + {
> + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
> + },
> +};
> +
> +static struct smsc911x_platform_config overo_smsc911x_config = {
> + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
> + .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
> + .flags = SMSC911X_USE_32BIT ,
> + .phy_interface = PHY_INTERFACE_MODE_MII,
> +};
> +
> +static struct platform_device overo_smsc911x_device = {
> + .name = "smsc911x",
> + .id = -1,
> + .num_resources = ARRAY_SIZE(overo_smsc911x_resources),
> + .resource = &overo_smsc911x_resources,
> + .dev = {
> + .platform_data = &overo_smsc911x_config,
> + },
> +};
> +
> +static inline void __init overo_init_smsc911x(void)
> +{
> + unsigned long cs_mem_base;
> +
> + if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
> + printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
> + return;
> + }
> +
> + overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
> + overo_smsc911x_resources[0].end = cs_mem_base + 0xff;
> +
> + if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
> + (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
> + gpio_export(OVERO_SMSC911X_GPIO, 0);
> + } else {
> + printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
> + return;
> + }
> +
> + overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
> + overo_smsc911x_resources[1].end = 0;
> +
> + platform_device_register(&overo_smsc911x_device);
> +}
> +
> +#else
> +static inline void __init overo_init_smsc911x(void) { return; }
> +#endif
> +
> static struct mtd_partition overo_nand_partitions[] = {
> {
> .name = "xloader",
> @@ -234,6 +295,7 @@ static void __init overo_init(void)
> usb_musb_init();
> usb_ehci_init();
> overo_flash_init();
> + overo_init_smsc911x();
>
> if ((gpio_request(OVERO_GPIO_W2W_NRESET,
> "OVERO_GPIO_W2W_NRESET") == 0) &&
> diff --git a/arch/arm/plat-omap/include/mach/board-overo.h
> b/arch/arm/plat-omap/include/mach/board-overo.h
> index 7ecae66..8635171 100644
> --- a/arch/arm/plat-omap/include/mach/board-overo.h
> +++ b/arch/arm/plat-omap/include/mach/board-overo.h
> @@ -22,5 +22,8 @@
> #define OVERO_GPIO_USBH_CPEN 168
> #define OVERO_GPIO_USBH_NRESET 183
>
> +#define OVERO_SMSC911X_CS 5
> +#define OVERO_SMSC911X_GPIO 176
> +
> #endif /* ____ASM_ARCH_OVERO_H */
>
> --
> 1.5.6.3
> --
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