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-rw-r--r--packages/linux/linux-2.6.21/compact-flash.patch249
1 files changed, 249 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.21/compact-flash.patch b/packages/linux/linux-2.6.21/compact-flash.patch
new file mode 100644
index 0000000000..86455e335d
--- /dev/null
+++ b/packages/linux/linux-2.6.21/compact-flash.patch
@@ -0,0 +1,249 @@
+Index: linux-2.6.21gum/drivers/pcmcia/Makefile
+===================================================================
+--- linux-2.6.21gum.orig/drivers/pcmcia/Makefile
++++ linux-2.6.21gum/drivers/pcmcia/Makefile
+@@ -69,4 +69,4 @@ sa1100_cs-$(CONFIG_SA1100_SIMPAD) += sa
+ pxa2xx_cs-$(CONFIG_ARCH_LUBBOCK) += pxa2xx_lubbock.o sa1111_generic.o
+ pxa2xx_cs-$(CONFIG_MACH_MAINSTONE) += pxa2xx_mainstone.o
+ pxa2xx_cs-$(CONFIG_PXA_SHARPSL) += pxa2xx_sharpsl.o
+-
++pxa2xx_cs-$(CONFIG_ARCH_GUMSTIX) += pxa2xx_gumstix.o
+Index: linux-2.6.21gum/drivers/pcmcia/pxa2xx_gumstix.c
+===================================================================
+--- /dev/null
++++ linux-2.6.21gum/drivers/pcmcia/pxa2xx_gumstix.c
+@@ -0,0 +1,234 @@
++/*
++ * linux/drivers/pcmcia/pxa2xx_gumstix.c
++ *
++ * Gumstix PCMCIA specific routines. Based on Mainstone
++ *
++ * Copyright 2004, Craig Hughes <craig@gumstix.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++
++#include <pcmcia/ss.h>
++
++#include <asm/hardware.h>
++#include <asm/delay.h>
++#include <asm/arch/pxa-regs.h>
++#include <asm/irq.h>
++
++#include <asm/arch/gumstix.h>
++
++#include "soc_common.h"
++
++static struct pcmcia_irqs gumstix_pcmcia_irqs0[] = {
++ { 0, GUMSTIX_S0_nCD_IRQ, "CF0 nCD" },
++ { 0, GUMSTIX_S0_nSTSCHG_IRQ, "CF0 nSTSCHG" },
++};
++
++static struct pcmcia_irqs gumstix_pcmcia_irqs1[] = {
++ { 1, GUMSTIX_S1_nCD_IRQ, "CF1 nCD" },
++ { 1, GUMSTIX_S1_nSTSCHG_IRQ, "CF1 nSTSCHG" },
++};
++
++static int gumstix_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
++{
++ if(skt->nr == 0)
++ {
++ pxa_gpio_mode(GPIO_GUMSTIX_nSTSCHG_0_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nCD_0_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_PRDY_nBSY_0_MD);
++ } else {
++ pxa_gpio_mode(GPIO_GUMSTIX_nSTSCHG_1_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nCD_1_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_PRDY_nBSY_1_MD);
++ }
++
++ pxa_gpio_mode(GPIO_GUMSTIX_nPOE_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPWE_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPIOR_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPIOW_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPCE_1_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPCE_2_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_pSKTSEL_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPREG_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPWAIT_MD);
++ pxa_gpio_mode(GPIO_GUMSTIX_nIOIS16_MD);
++
++ skt->irq = (skt->nr == 0) ? GUMSTIX_S0_PRDY_nBSY_IRQ : GUMSTIX_S1_PRDY_nBSY_IRQ;
++
++ return (skt->nr == 0) ? soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0)) :
++ soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
++}
++
++static void gumstix_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
++{
++ if(skt->nr == 0)
++ {
++ soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
++ } else {
++ soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
++ }
++}
++
++static void gumstix_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
++ struct pcmcia_state *state)
++{
++ unsigned int cd, prdy_nbsy, nbvd1;
++ if(skt->nr == 0)
++ {
++ cd = GPIO_GUMSTIX_nCD_0;
++ prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0;
++ nbvd1 = GPIO_GUMSTIX_nBVD1_0;
++ } else {
++ cd = GPIO_GUMSTIX_nCD_1;
++ prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_1;
++ nbvd1 = GPIO_GUMSTIX_nBVD1_1;
++ }
++ state->detect = !(GPLR(cd) & GPIO_bit(cd));
++ state->ready = !!(GPLR(prdy_nbsy) & GPIO_bit(prdy_nbsy));
++ state->bvd1 = !!(GPLR(nbvd1) & GPIO_bit(nbvd1));
++ state->bvd2 = 1;
++ state->vs_3v = 0;
++ state->vs_Xv = 0;
++ state->wrprot = 0;
++}
++
++static int gumstix_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
++ const socket_state_t *state)
++{
++ return 0;
++}
++
++static void gumstix_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
++{
++ if(skt->nr) {
++ soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
++ } else {
++ soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
++ }
++}
++
++static void gumstix_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
++{
++ if(skt->nr) {
++ soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
++ } else {
++ soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
++ }
++}
++
++static struct pcmcia_low_level gumstix_pcmcia_ops = {
++ .owner = THIS_MODULE,
++ .hw_init = gumstix_pcmcia_hw_init,
++ .hw_shutdown = gumstix_pcmcia_hw_shutdown,
++ .socket_state = gumstix_pcmcia_socket_state,
++ .configure_socket = gumstix_pcmcia_configure_socket,
++ .socket_init = gumstix_pcmcia_socket_init,
++ .socket_suspend = gumstix_pcmcia_socket_suspend,
++ .nr = 2,
++};
++
++static struct platform_device *gumstix_pcmcia_device;
++
++inline void __init gumstix_pcmcia_cpld_clk(void)
++{
++ GPCR(GPIO_GUMSTIX_nPOE) = GPIO_bit(GPIO_GUMSTIX_nPOE);
++ GPSR(GPIO_GUMSTIX_nPOE) = GPIO_bit(GPIO_GUMSTIX_nPOE);
++}
++
++inline unsigned char __init gumstix_pcmcia_cpld_read_bits(int bits)
++{
++ unsigned char result = 0;
++ unsigned int shift = 0;
++ while(bits--)
++ {
++ result |= !!(GPLR(GPIO_GUMSTIX_nCD_0) & GPIO_bit(GPIO_GUMSTIX_nCD_0)) << shift;
++ shift ++;
++ gumstix_pcmcia_cpld_clk();
++ }
++ printk("CPLD responded with: %02x\n",result);
++ return result;
++}
++
++/* We use the CPLD on the CF-CF card to read a value from a shift register. If we can read that
++ * magic sequence, then we have 2 CF cards; otherwise we assume just one
++ * The CPLD will send the value of the shift register on GPIO11 (the CD line for slot 0)
++ * when RESET is held in reset. We use GPIO48 (nPOE) as a clock signal,
++ * GPIO52/53 (card enable for both cards) to control read/write to the shift register
++ */
++static int __init gumstix_count_cards(void)
++{
++ pxa_gpio_mode(GPIO_GUMSTIX_nPOE | GPIO_OUT);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPCE_1 | GPIO_OUT);
++ pxa_gpio_mode(GPIO_GUMSTIX_nPCE_2 | GPIO_OUT);
++ pxa_gpio_mode(GPIO_GUMSTIX_nCD_0 | GPIO_IN);
++ pxa_gpio_mode(GPIO_GUMSTIX_CF_RESET | GPIO_OUT);
++
++ // Enter reset
++ GPSR(GPIO_GUMSTIX_CF_RESET) = GPIO_bit(GPIO_GUMSTIX_CF_RESET);
++
++ // Setup the shift register
++ GPSR(GPIO_GUMSTIX_nPCE_1) = GPIO_bit(GPIO_GUMSTIX_nPCE_1);
++ GPCR(GPIO_GUMSTIX_nPCE_2) = GPIO_bit(GPIO_GUMSTIX_nPCE_2);
++
++ // Tick the clock to program the shift register
++ gumstix_pcmcia_cpld_clk();
++
++ // Now set shift register into read mode
++ GPCR(GPIO_GUMSTIX_nPCE_1) = GPIO_bit(GPIO_GUMSTIX_nPCE_1);
++ GPSR(GPIO_GUMSTIX_nPCE_2) = GPIO_bit(GPIO_GUMSTIX_nPCE_2);
++
++ // We can read the bits now -- 0xC2 means "Dual compact flash"
++ if(gumstix_pcmcia_cpld_read_bits(8) != 0xC2)
++ {
++ // We do not have 2 CF slots
++ gumstix_pcmcia_ops.nr = 1;
++ }
++}
++
++static int __init gumstix_pcmcia_init(void)
++{
++ int ret;
++
++ gumstix_count_cards();
++
++ udelay(50);
++ GPCR(GPIO_GUMSTIX_CF_RESET) = GPIO_bit(GPIO_GUMSTIX_CF_RESET);
++
++ gumstix_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
++ if (!gumstix_pcmcia_device)
++ return -ENOMEM;
++
++ gumstix_pcmcia_device->dev.platform_data = &gumstix_pcmcia_ops;
++
++ ret = platform_device_add(gumstix_pcmcia_device);
++ if (ret)
++ platform_device_put(gumstix_pcmcia_device);
++
++ return ret;
++}
++
++static void __exit gumstix_pcmcia_exit(void)
++{
++ /*
++ * This call is supposed to free our gumstix_pcmcia_device.
++ * Unfortunately platform_device don't have a free method, and
++ * we can't assume it's free of any reference at this point so we
++ * can't free it either.
++ */
++ platform_device_unregister(gumstix_pcmcia_device);
++}
++
++fs_initcall(gumstix_pcmcia_init);
++module_exit(gumstix_pcmcia_exit);
++
++MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 16:39:17 +0000