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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-pxa/generic.c
downloadlinux-stericsson-2.6.12-rc2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
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diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
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+++ b/arch/arm/mach-pxa/generic.c
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+/*
+ * linux/arch/arm/mach-pxa/generic.c
+ *
+ * Author: Nicolas Pitre
+ * Created: Jun 15, 2001
+ * Copyright: MontaVista Software Inc.
+ *
+ * Code common to all PXA machines.
+ *
+ * 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.
+ *
+ * Since this file should be linked before any other machine specific file,
+ * the __initcall() here will be executed first. This serves as default
+ * initialization stuff for PXA machines which can be overridden later if
+ * need be.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/ioport.h>
+#include <linux/pm.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/udc.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/mmc.h>
+
+#include "generic.h"
+
+/*
+ * Handy function to set GPIO alternate functions
+ */
+
+void pxa_gpio_mode(int gpio_mode)
+{
+ unsigned long flags;
+ int gpio = gpio_mode & GPIO_MD_MASK_NR;
+ int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
+ int gafr;
+
+ local_irq_save(flags);
+ if (gpio_mode & GPIO_DFLT_LOW)
+ GPCR(gpio) = GPIO_bit(gpio);
+ else if (gpio_mode & GPIO_DFLT_HIGH)
+ GPSR(gpio) = GPIO_bit(gpio);
+ if (gpio_mode & GPIO_MD_MASK_DIR)
+ GPDR(gpio) |= GPIO_bit(gpio);
+ else
+ GPDR(gpio) &= ~GPIO_bit(gpio);
+ gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
+ GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
+ local_irq_restore(flags);
+}
+
+EXPORT_SYMBOL(pxa_gpio_mode);
+
+/*
+ * Routine to safely enable or disable a clock in the CKEN
+ */
+void pxa_set_cken(int clock, int enable)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+
+ if (enable)
+ CKEN |= clock;
+ else
+ CKEN &= ~clock;
+
+ local_irq_restore(flags);
+}
+
+EXPORT_SYMBOL(pxa_set_cken);
+
+/*
+ * Intel PXA2xx internal register mapping.
+ *
+ * Note 1: not all PXA2xx variants implement all those addresses.
+ *
+ * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
+ * and cache flush area.
+ */
+static struct map_desc standard_io_desc[] __initdata = {
+ /* virtual physical length type */
+ { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */
+ { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */
+ { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */
+ { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */
+ { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */
+ { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */
+ { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE } /* UNCACHED_PHYS_0 */
+};
+
+void __init pxa_map_io(void)
+{
+ iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
+ get_clk_frequency_khz(1);
+}
+
+
+static struct resource pxamci_resources[] = {
+ [0] = {
+ .start = 0x41100000,
+ .end = 0x41100fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_MMC,
+ .end = IRQ_MMC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 pxamci_dmamask = 0xffffffffUL;
+
+static struct platform_device pxamci_device = {
+ .name = "pxa2xx-mci",
+ .id = -1,
+ .dev = {
+ .dma_mask = &pxamci_dmamask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(pxamci_resources),
+ .resource = pxamci_resources,
+};
+
+void __init pxa_set_mci_info(struct pxamci_platform_data *info)
+{
+ pxamci_device.dev.platform_data = info;
+}
+
+
+static struct pxa2xx_udc_mach_info pxa_udc_info;
+
+void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
+{
+ memcpy(&pxa_udc_info, info, sizeof *info);
+}
+
+static struct resource pxa2xx_udc_resources[] = {
+ [0] = {
+ .start = 0x40600000,
+ .end = 0x4060ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_USB,
+ .end = IRQ_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 udc_dma_mask = ~(u32)0;
+
+static struct platform_device udc_device = {
+ .name = "pxa2xx-udc",
+ .id = -1,
+ .resource = pxa2xx_udc_resources,
+ .num_resources = ARRAY_SIZE(pxa2xx_udc_resources),
+ .dev = {
+ .platform_data = &pxa_udc_info,
+ .dma_mask = &udc_dma_mask,
+ }
+};
+
+static struct pxafb_mach_info pxa_fb_info;
+
+void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info)
+{
+ memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info));
+}
+
+static struct resource pxafb_resources[] = {
+ [0] = {
+ .start = 0x44000000,
+ .end = 0x4400ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_LCD,
+ .end = IRQ_LCD,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 fb_dma_mask = ~(u64)0;
+
+static struct platform_device pxafb_device = {
+ .name = "pxa2xx-fb",
+ .id = -1,
+ .dev = {
+ .platform_data = &pxa_fb_info,
+ .dma_mask = &fb_dma_mask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(pxafb_resources),
+ .resource = pxafb_resources,
+};
+
+static struct platform_device ffuart_device = {
+ .name = "pxa2xx-uart",
+ .id = 0,
+};
+static struct platform_device btuart_device = {
+ .name = "pxa2xx-uart",
+ .id = 1,
+};
+static struct platform_device stuart_device = {
+ .name = "pxa2xx-uart",
+ .id = 2,
+};
+
+static struct platform_device *devices[] __initdata = {
+ &pxamci_device,
+ &udc_device,
+ &pxafb_device,
+ &ffuart_device,
+ &btuart_device,
+ &stuart_device,
+};
+
+static int __init pxa_init(void)
+{
+ return platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+subsys_initcall(pxa_init);