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-rw-r--r--target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch203
1 files changed, 203 insertions, 0 deletions
diff --git a/target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch b/target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch
new file mode 100644
index 0000000000..98fdd4ca38
--- /dev/null
+++ b/target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch
@@ -0,0 +1,203 @@
+Index: linux-2.6.21gum/drivers/net/Kconfig
+===================================================================
+--- linux-2.6.21gum.orig/drivers/net/Kconfig
++++ linux-2.6.21gum/drivers/net/Kconfig
+@@ -836,6 +836,12 @@ config SMC91X
+ module, say M here and read <file:Documentation/modules.txt> as well
+ as <file:Documentation/networking/net-modules.txt>.
+
++config SMC91X_GUMSTIX
++ tristate
++ default m if SMC91X=m
++ default y if SMC91X=y
++ depends on SMC91X && ARCH_GUMSTIX
++
+ config SMC9194
+ tristate "SMC 9194 support"
+ depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN)
+Index: linux-2.6.21gum/drivers/net/Makefile
+===================================================================
+--- linux-2.6.21gum.orig/drivers/net/Makefile
++++ linux-2.6.21gum/drivers/net/Makefile
+@@ -200,6 +200,7 @@ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
+
+ obj-$(CONFIG_MACB) += macb.o
+
++obj-$(CONFIG_SMC91X_GUMSTIX) += gumstix-smc91x.o
+ obj-$(CONFIG_ARM) += arm/
+ obj-$(CONFIG_DEV_APPLETALK) += appletalk/
+ obj-$(CONFIG_TR) += tokenring/
+Index: linux-2.6.21gum/drivers/net/smc91x.c
+===================================================================
+--- linux-2.6.21gum.orig/drivers/net/smc91x.c
++++ linux-2.6.21gum/drivers/net/smc91x.c
+@@ -2373,6 +2373,10 @@ static struct platform_driver smc_driver
+ },
+ };
+
++#ifdef CONFIG_ARCH_GUMSTIX
++extern void gumstix_smc91x_load(void);
++#endif
++
+ static int __init smc_init(void)
+ {
+ #ifdef MODULE
+@@ -2384,6 +2388,10 @@ static int __init smc_init(void)
+ #endif
+ #endif
+
++#ifdef CONFIG_ARCH_GUMSTIX
++ gumstix_smc91x_load();
++#endif
++
+ return platform_driver_register(&smc_driver);
+ }
+
+Index: linux-2.6.21gum/drivers/net/gumstix-smc91x.c
+===================================================================
+--- /dev/null
++++ linux-2.6.21gum/drivers/net/gumstix-smc91x.c
+@@ -0,0 +1,143 @@
++/*
++ * Gumstix SMC91C111 chip intialization driver
++ *
++ * Author: Craig Hughes
++ * Created: December 9, 2004
++ * Copyright: (C) 2004 Craig Hughes
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/ioport.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++
++#include <asm/hardware.h>
++#include <asm/arch/pxa-regs.h>
++#include <asm/delay.h>
++
++#include <asm/arch/gumstix.h>
++
++#define SMC_DEBUG 0
++#include <asm/io.h>
++#include "smc91x.h"
++
++static struct resource gumstix_smc91x0_resources[] = {
++ [0] = {
++ .name = "smc91x-regs",
++ .start = PXA_CS1_PHYS + 0x00000300,
++ .end = PXA_CS1_PHYS + 0x000fffff,
++ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = GUMSTIX_ETH0_IRQ,
++ .end = GUMSTIX_ETH0_IRQ,
++ .flags = IORESOURCE_IRQ,
++ },
++};
++
++static struct resource gumstix_smc91x1_resources[] = {
++ [0] = {
++ .name = "smc91x-regs",
++ .start = PXA_CS2_PHYS + 0x00000300,
++ .end = PXA_CS2_PHYS + 0x000fffff,
++ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = GUMSTIX_ETH1_IRQ,
++ .end = GUMSTIX_ETH1_IRQ,
++ .flags = IORESOURCE_IRQ,
++ },
++};
++
++static struct platform_device gumstix_smc91x0_device = {
++ .name = "smc91x",
++ .id = 0,
++ .num_resources = ARRAY_SIZE(gumstix_smc91x0_resources),
++ .resource = gumstix_smc91x0_resources,
++};
++
++static struct platform_device gumstix_smc91x1_device = {
++ .name = "smc91x",
++ .id = 1,
++ .num_resources = ARRAY_SIZE(gumstix_smc91x1_resources),
++ .resource = gumstix_smc91x1_resources,
++};
++
++static struct platform_device *smc91x_devices[] = {
++ &gumstix_smc91x0_device,
++ &gumstix_smc91x1_device,
++};
++
++/* First we're going to test if there's a 2nd SMC91C111, and if not, then we'll free up those resources and the GPIO lines
++ * that it would otherwise use. We have no choice but to probe by doing:
++ * Set nCS2 to CS2 mode
++ * Set the reset line to GPIO out mode, and pull it high, then drop it low (to trigger reset)
++ * Read from the memory space to check for the sentinel sequence identifying a likely SMC91C111 device
++ */
++int __init gumstix_smc91x_init(void)
++{
++ unsigned int val, num_devices=ARRAY_SIZE(smc91x_devices);
++ void *ioaddr;
++
++ /* Set up nPWE */
++ pxa_gpio_mode(GPIO49_nPWE_MD);
++
++ pxa_gpio_mode(GPIO78_nCS_2_MD);
++ // If either if statement fails, then we'll drop out and turn_off_eth1,
++ // if both succeed, then we'll skip that and just proceed with 2 cards
++ if(request_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT, "smc91x probe"))
++ {
++ ioaddr = ioremap(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
++ val = ioread16(ioaddr + BANK_SELECT);
++ iounmap(ioaddr);
++ release_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
++ if ((val & 0xFF00) == 0x3300) {
++ goto proceed;
++ }
++ }
++
++turn_off_eth1:
++ // This is apparently not an SMC91C111
++ // So, let's decrement the number of devices to request, and reset the GPIO lines to GPIO IN mode
++ num_devices--;
++ smc91x_devices[1] = NULL;
++ pxa_gpio_mode(78 | GPIO_IN);
++
++proceed:
++ pxa_gpio_mode(GPIO15_nCS_1_MD);
++
++ if(smc91x_devices[1]) pxa_gpio_mode(GPIO_GUMSTIX_ETH1_RST_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_ETH0_RST_MD);
++ if(smc91x_devices[1]) GPSR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
++ GPSR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
++ udelay(1); // Hold RESET for at least 100ns
++ if(smc91x_devices[1]) GPCR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
++ GPCR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
++ msleep(50);
++
++ return platform_add_devices(smc91x_devices, num_devices);
++}
++
++void __exit gumstix_smc91x_exit(void)
++{
++ if(smc91x_devices[1] != NULL) platform_device_unregister(&gumstix_smc91x1_device);
++ platform_device_unregister(&gumstix_smc91x0_device);
++}
++
++void gumstix_smc91x_load(void) {}
++EXPORT_SYMBOL(gumstix_smc91x_load);
++
++module_init(gumstix_smc91x_init);
++module_exit(gumstix_smc91x_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Craig Hughes <craig@gumstix.com>");
++MODULE_DESCRIPTION("Gumstix board SMC91C111 chip initialization driver");
++MODULE_VERSION("1:0.1");