Imre Kaloz
18 years ago
parent
73c3a907a3
commit
1ada6a88e7
@ -0,0 +1,39 @@ |
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diff -Nur linux-2.6.19.2/arch/arm/mach-ixp4xx/ixdp425-pci.c linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/ixdp425-pci.c
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--- linux-2.6.19.2/arch/arm/mach-ixp4xx/ixdp425-pci.c 2007-04-15 14:26:04.000000000 +0200
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+++ linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/ixdp425-pci.c 2007-05-10 11:10:40.000000000 +0200
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@@ -66,7 +66,7 @@
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int __init ixdp425_pci_init(void)
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{
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if (machine_is_ixdp425() || machine_is_ixcdp1100() ||
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- machine_is_avila() || machine_is_ixdp465() || machine_is_compex())
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+ machine_is_ixdp465() || machine_is_compex())
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pci_common_init(&ixdp425_pci);
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return 0;
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}
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diff -Nur linux-2.6.19.2/arch/arm/mach-ixp4xx/ixdp425-setup.c linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/ixdp425-setup.c
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--- linux-2.6.19.2/arch/arm/mach-ixp4xx/ixdp425-setup.c 2007-04-15 14:26:49.000000000 +0200
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+++ linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/ixdp425-setup.c 2007-05-10 11:10:01.000000000 +0200
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@@ -205,23 +205,3 @@
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.init_machine = ixdp425_init,
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MACHINE_END
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#endif
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-
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-/*
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- * Avila is functionally equivalent to IXDP425 except that it adds
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- * a CF IDE slot hanging off the expansion bus. When we have a
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- * driver for IXP4xx CF IDE with driver model support we'll move
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- * Avila to it's own setup file.
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- */
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-#ifdef CONFIG_ARCH_AVILA
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-MACHINE_START(AVILA, "Gateworks Avila Network Platform")
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- /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
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- .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
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- .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
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- .map_io = ixp4xx_map_io,
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- .init_irq = ixp4xx_init_irq,
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- .timer = &ixp4xx_timer,
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- .boot_params = 0x0100,
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- .init_machine = ixdp425_init,
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-MACHINE_END
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-#endif
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-
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@ -0,0 +1,381 @@ |
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This patch adds support for the Gateworks Avila Network Platform in
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a separate set of setup files to the IXDP425. This is necessary now
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that a driver for the Avila CF card slot is available. It also adds
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support for a minor variant on the Avila board known as the Loft,
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which has a different number of maximum PCI devices.
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Signed-off-by: Michael-Luke Jones <mlj28 <at> cam.ac.uk>
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Index: linux-2.6.19/arch/arm/mach-ixp4xx/Kconfig
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===================================================================
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--- linux-2.6.19.orig/arch/arm/mach-ixp4xx/Kconfig
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+++ linux-2.6.19/arch/arm/mach-ixp4xx/Kconfig
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@@ -17,7 +17,7 @@ config MACH_NSLU2
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NSLU2 NAS device. For more information on this platform,
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see http://www.nslu2-linux.org
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-config ARCH_AVILA
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+config MACH_AVILA
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bool "Avila"
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select PCI
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help
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@@ -25,6 +25,14 @@ config ARCH_AVILA
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Avila Network Platform. For more information on this platform,
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see <file:Documentation/arm/IXP4xx>.
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+config MACH_LOFT
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+ bool "Loft"
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+ depends on MACH_AVILA
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+ help
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+ Say 'Y' here if you want your kernel to support the Giant
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+ Shoulder Inc Loft board (a minor variation on the standard
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+ Gateworks Avila Network Platform).
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+
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config ARCH_ADI_COYOTE
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bool "Coyote"
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select PCI
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@@ -86,7 +94,7 @@ config MACH_NAS100D
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#
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config ARCH_IXDP4XX
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bool
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- depends on ARCH_IXDP425 || ARCH_AVILA || MACH_IXDP465
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+ depends on ARCH_IXDP425 || MACH_IXDP465
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default y
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#
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Index: linux-2.6.19/arch/arm/mach-ixp4xx/Makefile
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===================================================================
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--- linux-2.6.19.orig/arch/arm/mach-ixp4xx/Makefile
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+++ linux-2.6.19/arch/arm/mach-ixp4xx/Makefile
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@@ -6,6 +6,7 @@ obj-pci-y :=
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obj-pci-n :=
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obj-pci-$(CONFIG_ARCH_IXDP4XX) += ixdp425-pci.o
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+obj-pci-$(CONFIG_MACH_AVILA) += avila-pci.o
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obj-pci-$(CONFIG_MACH_IXDPG425) += ixdpg425-pci.o
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obj-pci-$(CONFIG_ARCH_ADI_COYOTE) += coyote-pci.o
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obj-pci-$(CONFIG_MACH_GTWX5715) += gtwx5715-pci.o
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@@ -15,6 +16,7 @@ obj-pci-$(CONFIG_MACH_NAS100D) += nas10
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obj-y += common.o
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obj-$(CONFIG_ARCH_IXDP4XX) += ixdp425-setup.o
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+obj-$(CONFIG_MACH_AVILA) += avila-setup.o
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obj-$(CONFIG_MACH_IXDPG425) += coyote-setup.o
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obj-$(CONFIG_ARCH_ADI_COYOTE) += coyote-setup.o
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obj-$(CONFIG_MACH_GTWX5715) += gtwx5715-setup.o
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Index: linux-2.6.19/arch/arm/mach-ixp4xx/avila-pci.c
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===================================================================
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--- /dev/null
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+++ linux-2.6.19/arch/arm/mach-ixp4xx/avila-pci.c
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@@ -0,0 +1,78 @@
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+/*
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+ * arch/arm/mach-ixp4xx/avila-pci.c
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+ *
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+ * Gateworks Avila board-level PCI initialization
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+ *
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+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
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+ *
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+ * Based on ixdp-pci.c
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+ * Copyright (C) 2002 Intel Corporation.
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+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
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+ *
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+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/pci.h>
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+#include <linux/init.h>
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+#include <linux/irq.h>
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+#include <linux/delay.h>
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+
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+#include <asm/mach/pci.h>
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+#include <asm/irq.h>
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+#include <asm/hardware.h>
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+#include <asm/mach-types.h>
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+
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+void __init avila_pci_preinit(void)
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+{
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+ set_irq_type(IRQ_AVILA_PCI_INTA, IRQT_LOW);
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+ set_irq_type(IRQ_AVILA_PCI_INTB, IRQT_LOW);
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+ set_irq_type(IRQ_AVILA_PCI_INTC, IRQT_LOW);
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+ set_irq_type(IRQ_AVILA_PCI_INTD, IRQT_LOW);
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+
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+ ixp4xx_pci_preinit();
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+}
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+
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+static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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+{
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+ static int pci_irq_table[AVILA_PCI_IRQ_LINES] = {
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+ IRQ_AVILA_PCI_INTA,
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+ IRQ_AVILA_PCI_INTB,
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+ IRQ_AVILA_PCI_INTC,
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+ IRQ_AVILA_PCI_INTD
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+ };
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+
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+ int irq = -1;
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+
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+ if (slot >= 1 &&
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+ slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) &&
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+ pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) {
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+ irq = pci_irq_table[(slot + pin - 2) % 4];
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+ }
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+
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+ return irq;
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+}
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+
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+struct hw_pci avila_pci __initdata = {
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+ .nr_controllers = 1,
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+ .preinit = avila_pci_preinit,
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+ .swizzle = pci_std_swizzle,
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+ .setup = ixp4xx_setup,
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+ .scan = ixp4xx_scan_bus,
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+ .map_irq = avila_map_irq,
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+};
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+
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+int __init avila_pci_init(void)
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+{
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+ if (machine_is_avila() || machine_is_loft())
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+ pci_common_init(&avila_pci);
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+ return 0;
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+}
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+
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+subsys_initcall(avila_pci_init);
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+
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Index: linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c
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===================================================================
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--- /dev/null
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+++ linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c
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@@ -0,0 +1,152 @@
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+/*
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+ * arch/arm/mach-ixp4xx/avila-setup.c
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+ *
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+ * Gateworks Avila board-setup
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+ *
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+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
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+ *
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+ * Based on ixdp-setup.c
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+ * Copyright (C) 2003-2005 MontaVista Software, Inc.
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+ *
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+ * Author: Deepak Saxena <dsaxena@plexity.net>
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/device.h>
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+#include <linux/serial.h>
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+#include <linux/tty.h>
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+#include <linux/serial_8250.h>
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+#include <linux/slab.h>
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+
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+#include <asm/types.h>
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+#include <asm/setup.h>
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+#include <asm/memory.h>
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+#include <asm/hardware.h>
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+#include <asm/mach-types.h>
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+#include <asm/irq.h>
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+#include <asm/mach/arch.h>
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+#include <asm/mach/flash.h>
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+
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+static struct flash_platform_data avila_flash_data = {
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+ .map_name = "cfi_probe",
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+ .width = 2,
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+};
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+
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+static struct resource avila_flash_resource = {
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+ .flags = IORESOURCE_MEM,
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+};
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+
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+static struct platform_device avila_flash = {
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+ .name = "IXP4XX-Flash",
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+ .id = 0,
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+ .dev = {
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+ .platform_data = &avila_flash_data,
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+ },
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+ .num_resources = 1,
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+ .resource = &avila_flash_resource,
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+};
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+
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+static struct ixp4xx_i2c_pins avila_i2c_gpio_pins = {
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+ .sda_pin = AVILA_SDA_PIN,
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+ .scl_pin = AVILA_SCL_PIN,
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+};
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+
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+static struct platform_device avila_i2c_controller = {
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+ .name = "IXP4XX-I2C",
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+ .id = 0,
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+ .dev = {
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+ .platform_data = &avila_i2c_gpio_pins,
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+ },
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+ .num_resources = 0
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+};
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+
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+static struct resource avila_uart_resources[] = {
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+ {
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+ .start = IXP4XX_UART1_BASE_PHYS,
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+ .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
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+ .flags = IORESOURCE_MEM
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+ },
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+ {
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+ .start = IXP4XX_UART2_BASE_PHYS,
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+ .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
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+ .flags = IORESOURCE_MEM
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+ }
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+};
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+
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+static struct plat_serial8250_port avila_uart_data[] = {
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+ {
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+ .mapbase = IXP4XX_UART1_BASE_PHYS,
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+ .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
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+ .irq = IRQ_IXP4XX_UART1,
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+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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+ .iotype = UPIO_MEM,
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+ .regshift = 2,
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+ .uartclk = IXP4XX_UART_XTAL,
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+ },
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+ {
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+ .mapbase = IXP4XX_UART2_BASE_PHYS,
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+ .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
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+ .irq = IRQ_IXP4XX_UART2,
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+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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+ .iotype = UPIO_MEM,
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+ .regshift = 2,
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+ .uartclk = IXP4XX_UART_XTAL,
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+ },
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+ { },
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+};
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+
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+static struct platform_device avila_uart = {
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+ .name = "serial8250",
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+ .id = PLAT8250_DEV_PLATFORM,
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+ .dev.platform_data = avila_uart_data,
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+ .num_resources = 2,
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+ .resource = avila_uart_resources
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+};
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+
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+static struct platform_device *avila_devices[] __initdata = {
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+ &avila_i2c_controller,
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+ &avila_flash,
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+ &avila_uart
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+};
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+
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+static void __init avila_init(void)
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+{
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+ ixp4xx_sys_init();
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+
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+ avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
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+ avila_flash_resource.end =
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+ IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
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+
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+ platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
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+}
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+
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+MACHINE_START(AVILA, "Gateworks Avila Network Platform")
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+ /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
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+ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
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+ .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
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+ .map_io = ixp4xx_map_io,
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+ .init_irq = ixp4xx_init_irq,
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+ .timer = &ixp4xx_timer,
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+ .boot_params = 0x0100,
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+ .init_machine = avila_init,
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+MACHINE_END
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+
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+ /*
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+ * Loft is functionally equivalent to Avila except that it has a
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+ * different number for the maximum PCI devices. The MACHINE
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+ * structure below is identical to Avila except for the comment.
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+ */
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+#ifdef CONFIG_MACH_LOFT
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+MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
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+ /* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
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+ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
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+ .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
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+ .map_io = ixp4xx_map_io,
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+ .init_irq = ixp4xx_init_irq,
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+ .timer = &ixp4xx_timer,
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+ .boot_params = 0x0100,
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+ .init_machine = avila_init,
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+MACHINE_END
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+#endif
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+
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Index: linux-2.6.19/include/asm-arm/arch-ixp4xx/avila.h
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===================================================================
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--- /dev/null
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+++ linux-2.6.19/include/asm-arm/arch-ixp4xx/avila.h
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@@ -0,0 +1,39 @@
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+/*
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+ * include/asm-arm/arch-ixp4xx/avila.h
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+ *
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+ * Gateworks Avila platform specific definitions
|
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+ *
|
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+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
|
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+ *
|
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+ * Based on ixdp425.h
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+ * Author: Deepak Saxena <dsaxena@plexity.net>
|
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+ *
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+ * Copyright 2004 (c) MontaVista, Software, Inc.
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+ *
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+ * This file is licensed under the terms of the GNU General Public
|
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+ * License version 2. This program is licensed "as is" without any
|
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+ * warranty of any kind, whether express or implied.
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+ */
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+
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+#ifndef __ASM_ARCH_HARDWARE_H__
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+#error "Do not include this directly, instead #include <asm/hardware.h>"
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+#endif
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+
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+#define AVILA_SDA_PIN 7
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+#define AVILA_SCL_PIN 6
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+
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+/*
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+ * AVILA PCI IRQs
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+ */
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+#define AVILA_PCI_MAX_DEV 4
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+#define LOFT_PCI_MAX_DEV 6
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+#define AVILA_PCI_IRQ_LINES 4
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+
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+
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+/* PCI controller GPIO to IRQ pin mappings */
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+#define AVILA_PCI_INTA_PIN 11
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+#define AVILA_PCI_INTB_PIN 10
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+#define AVILA_PCI_INTC_PIN 9
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+#define AVILA_PCI_INTD_PIN 8
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+
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+
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Index: linux-2.6.19/include/asm-arm/arch-ixp4xx/hardware.h
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===================================================================
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--- linux-2.6.19.orig/include/asm-arm/arch-ixp4xx/hardware.h
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+++ linux-2.6.19/include/asm-arm/arch-ixp4xx/hardware.h
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@@ -42,6 +42,7 @@ extern unsigned int processor_id;
|
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|
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/* Platform specific details */
|
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#include "ixdp425.h"
|
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+#include "avila.h"
|
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#include "coyote.h"
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#include "prpmc1100.h"
|
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#include "nslu2.h"
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Index: linux-2.6.19/include/asm-arm/arch-ixp4xx/irqs.h
|
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===================================================================
|
||||
--- linux-2.6.19.orig/include/asm-arm/arch-ixp4xx/irqs.h
|
||||
+++ linux-2.6.19/include/asm-arm/arch-ixp4xx/irqs.h
|
||||
@@ -79,6 +79,15 @@
|
||||
#define IRQ_IXDP425_PCI_INTD IRQ_IXP4XX_GPIO8
|
||||
|
||||
/*
|
||||
+ * Gateworks Avila board IRQs
|
||||
+ */
|
||||
+#define IRQ_AVILA_PCI_INTA IRQ_IXP4XX_GPIO11
|
||||
+#define IRQ_AVILA_PCI_INTB IRQ_IXP4XX_GPIO10
|
||||
+#define IRQ_AVILA_PCI_INTC IRQ_IXP4XX_GPIO9
|
||||
+#define IRQ_AVILA_PCI_INTD IRQ_IXP4XX_GPIO8
|
||||
+
|
||||
+
|
||||
+/*
|
||||
* PrPMC1100 Board IRQs
|
||||
*/
|
||||
#define IRQ_PRPMC1100_PCI_INTA IRQ_IXP4XX_GPIO11
|
||||
@ -0,0 +1,70 @@ |
||||
---
|
||||
arch/arm/mach-ixp4xx/avila-setup.c | 50 ++++++++++++++++++++++++++++++++++++-
|
||||
1 file changed, 49 insertions(+), 1 deletion(-)
|
||||
|
||||
Index: linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c
|
||||
===================================================================
|
||||
--- linux-2.6.19.orig/arch/arm/mach-ixp4xx/avila-setup.c
|
||||
+++ linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c
|
||||
@@ -104,10 +104,60 @@ static struct platform_device avila_uart
|
||||
.resource = avila_uart_resources
|
||||
};
|
||||
|
||||
+/* MACs */
|
||||
+static struct resource res_mac0 = {
|
||||
+ .start = IXP4XX_EthB_BASE_PHYS,
|
||||
+ .end = IXP4XX_EthB_BASE_PHYS + 0x1ff,
|
||||
+ .flags = IORESOURCE_MEM,
|
||||
+};
|
||||
+
|
||||
+static struct resource res_mac1 = {
|
||||
+ .start = IXP4XX_EthC_BASE_PHYS,
|
||||
+ .end = IXP4XX_EthC_BASE_PHYS + 0x1ff,
|
||||
+ .flags = IORESOURCE_MEM,
|
||||
+};
|
||||
+
|
||||
+static struct mac_plat_info plat_mac0 = {
|
||||
+ .npe_id = 1,
|
||||
+ .phy_id = 0,
|
||||
+ .eth_id = 0,
|
||||
+ .rxq_id = 27,
|
||||
+ .txq_id = 24,
|
||||
+ .rxdoneq_id = 4,
|
||||
+};
|
||||
+
|
||||
+static struct mac_plat_info plat_mac1 = {
|
||||
+ .npe_id = 2,
|
||||
+ .phy_id = 1,
|
||||
+ .eth_id = 1,
|
||||
+ .rxq_id = 28,
|
||||
+ .txq_id = 25,
|
||||
+ .rxdoneq_id = 5,
|
||||
+};
|
||||
+
|
||||
+static struct platform_device mac0 = {
|
||||
+ .name = "ixp4xx_mac",
|
||||
+ .id = 0,
|
||||
+ .dev.platform_data = &plat_mac0,
|
||||
+ .num_resources = 1,
|
||||
+ .resource = &res_mac0,
|
||||
+};
|
||||
+
|
||||
+static struct platform_device mac1 = {
|
||||
+ .name = "ixp4xx_mac",
|
||||
+ .id = 1,
|
||||
+ .dev.platform_data = &plat_mac1,
|
||||
+ .num_resources = 1,
|
||||
+ .resource = &res_mac1,
|
||||
+};
|
||||
+
|
||||
static struct platform_device *avila_devices[] __initdata = {
|
||||
&avila_i2c_controller,
|
||||
&avila_flash,
|
||||
- &avila_uart
|
||||
+ &avila_uart,
|
||||
+ &mac0,
|
||||
+ &mac1,
|
||||
+
|
||||
};
|
||||
|
||||
static void __init avila_init(void)
|
||||
@ -0,0 +1,50 @@ |
||||
Index: linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c
|
||||
===================================================================
|
||||
--- linux-2.6.19.orig/arch/arm/mach-ixp4xx/avila-setup.c 2007-01-23 03:12:36.000000000 -0800
|
||||
+++ linux-2.6.19/arch/arm/mach-ixp4xx/avila-setup.c 2007-01-23 03:12:47.000000000 -0800
|
||||
@@ -18,6 +18,10 @@
|
||||
#include <linux/tty.h>
|
||||
#include <linux/serial_8250.h>
|
||||
#include <linux/slab.h>
|
||||
+#ifdef CONFIG_SENSORS_EEPROM
|
||||
+#include <linux/i2c.h>
|
||||
+#include <linux/eeprom.h>
|
||||
+#endif
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/setup.h>
|
||||
@@ -198,9 +202,34 @@
|
||||
&avila_npe_ucode,
|
||||
};
|
||||
|
||||
+#ifdef CONFIG_SENSORS_EEPROM
|
||||
+static int loft_eeprom_do(struct notifier_block *self, unsigned long event, void *t)
|
||||
+{
|
||||
+ struct eeprom_data *data = t;
|
||||
+
|
||||
+ char macs[12];
|
||||
+
|
||||
+ /* The MACs are the first 12 bytes in the eeprom at address 0x51 */
|
||||
+ if (event == EEPROM_REGISTER && data->client.addr == 0x51) {
|
||||
+ data->attr->read(&data->client.dev.kobj, macs, 0, 12);
|
||||
+ memcpy(&plat_mac0.hwaddr, macs, 6);
|
||||
+ memcpy(&plat_mac1.hwaddr, macs + 6, 6);
|
||||
+ }
|
||||
+
|
||||
+ return NOTIFY_DONE;
|
||||
+}
|
||||
+
|
||||
+static struct notifier_block loft_eeprom_notifier = {
|
||||
+ .notifier_call = loft_eeprom_do
|
||||
+};
|
||||
+#endif
|
||||
+
|
||||
static void __init avila_init(void)
|
||||
{
|
||||
ixp4xx_sys_init();
|
||||
+#ifdef CONFIG_SENSORS_EEPROM
|
||||
+ register_eeprom_notifier(&loft_eeprom_notifier);
|
||||
+#endif
|
||||
|
||||
avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
|
||||
avila_flash_resource.end =
|
||||
@ -0,0 +1,28 @@ |
||||
diff -Nur linux-2.6.19.2/arch/arm/mach-ixp4xx/avila-setup.c linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/avila-setup.c
|
||||
--- linux-2.6.19.2/arch/arm/mach-ixp4xx/avila-setup.c 2007-05-10 12:30:54.000000000 +0200
|
||||
+++ linux-2.6.19.2-owrt/arch/arm/mach-ixp4xx/avila-setup.c 2007-05-10 12:33:08.000000000 +0200
|
||||
@@ -155,13 +155,23 @@
|
||||
.resource = &res_mac1,
|
||||
};
|
||||
|
||||
+struct npe_ucode_platform_data avila_npe_ucode_data = {
|
||||
+ .mtd_partition = "RedBoot",
|
||||
+};
|
||||
+
|
||||
+static struct platform_device avila_npe_ucode = {
|
||||
+ .name = "ixp4xx_npe_ucode",
|
||||
+ .id = 0,
|
||||
+ .dev.platform_data = &avila_npe_ucode_data,
|
||||
+};
|
||||
+
|
||||
static struct platform_device *avila_devices[] __initdata = {
|
||||
&avila_i2c_controller,
|
||||
&avila_flash,
|
||||
&avila_uart,
|
||||
&mac0,
|
||||
&mac1,
|
||||
-
|
||||
+ &avila_npe_ucode,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_SENSORS_EEPROM
|
||||
@ -0,0 +1,201 @@ |
||||
Add EEPROM notifiers
|
||||
|
||||
These help board level code by allowing a callback when EEPROMs are
|
||||
loaded, this permits system level configuration to be loaded from the
|
||||
EEPROM. This is particularly useful when the ethernet MAC ids are
|
||||
stored in EEPROM and when the ethernet hardware is generic (so it
|
||||
has no board level knowledge), then the MACs can be loaded into
|
||||
the 'maclist' code and read out by the ethernet config.
|
||||
|
||||
Signed-off-by: John Bowler <jbowler@acm.org>
|
||||
|
||||
Index: linux-2.6.19/drivers/i2c/chips/eeprom.c
|
||||
===================================================================
|
||||
--- linux-2.6.19.orig/drivers/i2c/chips/eeprom.c
|
||||
+++ linux-2.6.19/drivers/i2c/chips/eeprom.c
|
||||
@@ -34,6 +34,8 @@
|
||||
#include <linux/jiffies.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/mutex.h>
|
||||
+#include <linux/notifier.h>
|
||||
+#include <linux/eeprom.h>
|
||||
|
||||
/* Addresses to scan */
|
||||
static unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
|
||||
@@ -42,26 +44,7 @@ static unsigned short normal_i2c[] = { 0
|
||||
/* Insmod parameters */
|
||||
I2C_CLIENT_INSMOD_1(eeprom);
|
||||
|
||||
-
|
||||
-/* Size of EEPROM in bytes */
|
||||
-#define EEPROM_SIZE 256
|
||||
-
|
||||
-/* possible types of eeprom devices */
|
||||
-enum eeprom_nature {
|
||||
- UNKNOWN,
|
||||
- VAIO,
|
||||
-};
|
||||
-
|
||||
-/* Each client has this additional data */
|
||||
-struct eeprom_data {
|
||||
- struct i2c_client client;
|
||||
- struct mutex update_lock;
|
||||
- u8 valid; /* bitfield, bit!=0 if slice is valid */
|
||||
- unsigned long last_updated[8]; /* In jiffies, 8 slices */
|
||||
- u8 data[EEPROM_SIZE]; /* Register values */
|
||||
- enum eeprom_nature nature;
|
||||
-};
|
||||
-
|
||||
+ATOMIC_NOTIFIER_HEAD(eeprom_chain);
|
||||
|
||||
static int eeprom_attach_adapter(struct i2c_adapter *adapter);
|
||||
static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind);
|
||||
@@ -190,6 +173,7 @@ static int eeprom_detect(struct i2c_adap
|
||||
data->valid = 0;
|
||||
mutex_init(&data->update_lock);
|
||||
data->nature = UNKNOWN;
|
||||
+ data->attr = &eeprom_attr;
|
||||
|
||||
/* Tell the I2C layer a new client has arrived */
|
||||
if ((err = i2c_attach_client(new_client)))
|
||||
@@ -213,6 +197,9 @@ static int eeprom_detect(struct i2c_adap
|
||||
if (err)
|
||||
goto exit_detach;
|
||||
|
||||
+ /* call the notifier chain */
|
||||
+ atomic_notifier_call_chain(&eeprom_chain, EEPROM_REGISTER, data);
|
||||
+
|
||||
return 0;
|
||||
|
||||
exit_detach:
|
||||
@@ -238,6 +225,41 @@ static int eeprom_detach_client(struct i
|
||||
return 0;
|
||||
}
|
||||
|
||||
+/**
|
||||
+ * register_eeprom_notifier - register a 'user' of EEPROM devices.
|
||||
+ * @nb: pointer to notifier info structure
|
||||
+ *
|
||||
+ * Registers a callback function to be called upon detection
|
||||
+ * of an EEPROM device. Detection invokes the 'add' callback
|
||||
+ * with the kobj of the mutex and a bin_attribute which allows
|
||||
+ * read from the EEPROM. The intention is that the notifier
|
||||
+ * will be able to read system configuration from the notifier.
|
||||
+ *
|
||||
+ * Only EEPROMs detected *after* the addition of the notifier
|
||||
+ * are notified. I.e. EEPROMs already known to the system
|
||||
+ * will not be notified - add the notifier from board level
|
||||
+ * code!
|
||||
+ */
|
||||
+int register_eeprom_notifier(struct notifier_block *nb)
|
||||
+{
|
||||
+ return atomic_notifier_chain_register(&eeprom_chain, nb);
|
||||
+}
|
||||
+
|
||||
+/**
|
||||
+ * unregister_eeprom_notifier - unregister a 'user' of EEPROM devices.
|
||||
+ * @old: pointer to notifier info structure
|
||||
+ *
|
||||
+ * Removes a callback function from the list of 'users' to be
|
||||
+ * notified upon detection of EEPROM devices.
|
||||
+ */
|
||||
+int unregister_eeprom_notifier(struct notifier_block *nb)
|
||||
+{
|
||||
+ return atomic_notifier_chain_unregister(&eeprom_chain, nb);
|
||||
+}
|
||||
+
|
||||
+EXPORT_SYMBOL_GPL(register_eeprom_notifier);
|
||||
+EXPORT_SYMBOL_GPL(unregister_eeprom_notifier);
|
||||
+
|
||||
static int __init eeprom_init(void)
|
||||
{
|
||||
return i2c_add_driver(&eeprom_driver);
|
||||
Index: linux-2.6.19/include/linux/eeprom.h
|
||||
===================================================================
|
||||
--- /dev/null
|
||||
+++ linux-2.6.19/include/linux/eeprom.h
|
||||
@@ -0,0 +1,71 @@
|
||||
+#ifndef _LINUX_EEPROM_H
|
||||
+#define _LINUX_EEPROM_H
|
||||
+/*
|
||||
+ * $Id: 45-eeprom-new-notifier.patch,v 1.2 2006/03/27 11:10:19 azummo Exp $
|
||||
+ *
|
||||
+ * Copyright (C) 2006 John Bowler
|
||||
+ */
|
||||
+
|
||||
+/*
|
||||
+ * 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.
|
||||
+ *
|
||||
+ * This program is distributed in the hope that it will be useful,
|
||||
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
+ * GNU General Public License for more details.
|
||||
+ *
|
||||
+ * You should have received a copy of the GNU General Public License
|
||||
+ * along with this program; if not, write to the Free Software
|
||||
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
+ */
|
||||
+
|
||||
+#ifndef __KERNEL__
|
||||
+#error This is a kernel header
|
||||
+#endif
|
||||
+
|
||||
+#include <linux/list.h>
|
||||
+#include <linux/kobject.h>
|
||||
+#include <linux/sysfs.h>
|
||||
+
|
||||
+/* Size of EEPROM in bytes */
|
||||
+#define EEPROM_SIZE 256
|
||||
+
|
||||
+/* possible types of eeprom devices */
|
||||
+enum eeprom_nature {
|
||||
+ UNKNOWN,
|
||||
+ VAIO,
|
||||
+};
|
||||
+
|
||||
+/* Each client has this additional data */
|
||||
+struct eeprom_data {
|
||||
+ struct i2c_client client;
|
||||
+ struct mutex update_lock;
|
||||
+ u8 valid; /* bitfield, bit!=0 if slice is valid */
|
||||
+ unsigned long last_updated[8]; /* In jiffies, 8 slices */
|
||||
+ u8 data[EEPROM_SIZE]; /* Register values */
|
||||
+ enum eeprom_nature nature;
|
||||
+ struct bin_attribute *attr;
|
||||
+};
|
||||
+
|
||||
+/*
|
||||
+ * This is very basic.
|
||||
+ *
|
||||
+ * If an EEPROM is detected on the I2C bus (this only works for
|
||||
+ * I2C EEPROMs) the notifier chain is called with
|
||||
+ * both the I2C information and the kobject for the sysfs
|
||||
+ * device which has been registers. It is then possible to
|
||||
+ * read from the device via the bin_attribute::read method
|
||||
+ * to extract configuration information.
|
||||
+ *
|
||||
+ * Register the notifier in the board level code, there is no
|
||||
+ * need to unregister it but you can if you want (it will save
|
||||
+ * a little bit or kernel memory to do so).
|
||||
+ */
|
||||
+
|
||||
+extern int register_eeprom_notifier(struct notifier_block *nb);
|
||||
+extern int unregister_eeprom_notifier(struct notifier_block *nb);
|
||||
+
|
||||
+#endif /* _LINUX_EEPROM_H */
|
||||
Index: linux-2.6.19/include/linux/notifier.h
|
||||
===================================================================
|
||||
--- linux-2.6.19.orig/include/linux/notifier.h
|
||||
+++ linux-2.6.19/include/linux/notifier.h
|
||||
@@ -187,5 +187,8 @@ extern int srcu_notifier_call_chain(stru
|
||||
#define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */
|
||||
#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */
|
||||
|
||||
+/* eeprom notifier chain */
|
||||
+#define EEPROM_REGISTER 0x0001
|
||||
+
|
||||
#endif /* __KERNEL__ */
|
||||
#endif /* _LINUX_NOTIFIER_H */
|
||||
Loading…
Reference in new issue