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https://github.com/torvalds/linux
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d14b272bc6
Add the ability to have pxafb use only certain fixed video modes (selected on a per platform basis). This is useful on production hardware such as the Zaurus cxx00 models where the valid modes are known in advance and any other modes could result in hardware damage. Following this, add support for the cxx00 QVGA mode. Mode information is passed to the lcd_power call to allowing the panel drivers to configure the display hardware accordingly (corgi_lcd already contains the functionality for the cxx00 panel). This mirrors the setup already used by w100fb. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
355 lines
7.4 KiB
C
355 lines
7.4 KiB
C
/*
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* linux/arch/arm/mach-pxa/generic.c
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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*
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* Code common to all PXA machines.
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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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* Since this file should be linked before any other machine specific file,
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* the __initcall() here will be executed first. This serves as default
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* initialization stuff for PXA machines which can be overridden later if
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* need be.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/ioport.h>
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#include <linux/pm.h>
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#include <linux/string.h>
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#include <asm/hardware.h>
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#include <asm/irq.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/mach/map.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/udc.h>
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#include <asm/arch/pxafb.h>
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#include <asm/arch/mmc.h>
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#include <asm/arch/irda.h>
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#include <asm/arch/i2c.h>
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#include "generic.h"
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/*
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* Handy function to set GPIO alternate functions
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*/
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void pxa_gpio_mode(int gpio_mode)
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{
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unsigned long flags;
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int gpio = gpio_mode & GPIO_MD_MASK_NR;
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int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
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int gafr;
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local_irq_save(flags);
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if (gpio_mode & GPIO_DFLT_LOW)
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GPCR(gpio) = GPIO_bit(gpio);
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else if (gpio_mode & GPIO_DFLT_HIGH)
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GPSR(gpio) = GPIO_bit(gpio);
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if (gpio_mode & GPIO_MD_MASK_DIR)
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GPDR(gpio) |= GPIO_bit(gpio);
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else
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GPDR(gpio) &= ~GPIO_bit(gpio);
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gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
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GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
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local_irq_restore(flags);
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}
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EXPORT_SYMBOL(pxa_gpio_mode);
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/*
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* Routine to safely enable or disable a clock in the CKEN
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*/
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void pxa_set_cken(int clock, int enable)
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{
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unsigned long flags;
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local_irq_save(flags);
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if (enable)
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CKEN |= clock;
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else
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CKEN &= ~clock;
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local_irq_restore(flags);
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}
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EXPORT_SYMBOL(pxa_set_cken);
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/*
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* Intel PXA2xx internal register mapping.
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*
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* Note 1: not all PXA2xx variants implement all those addresses.
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*
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* Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
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* and cache flush area.
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*/
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static struct map_desc standard_io_desc[] __initdata = {
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{ /* Devs */
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.virtual = 0xf2000000,
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.pfn = __phys_to_pfn(0x40000000),
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.length = 0x02000000,
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.type = MT_DEVICE
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}, { /* LCD */
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.virtual = 0xf4000000,
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.pfn = __phys_to_pfn(0x44000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}, { /* Mem Ctl */
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.virtual = 0xf6000000,
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.pfn = __phys_to_pfn(0x48000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}, { /* USB host */
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.virtual = 0xf8000000,
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.pfn = __phys_to_pfn(0x4c000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}, { /* Camera */
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.virtual = 0xfa000000,
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.pfn = __phys_to_pfn(0x50000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}, { /* IMem ctl */
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.virtual = 0xfe000000,
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.pfn = __phys_to_pfn(0x58000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}, { /* UNCACHED_PHYS_0 */
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.virtual = 0xff000000,
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.pfn = __phys_to_pfn(0x00000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}
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};
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void __init pxa_map_io(void)
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{
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iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
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get_clk_frequency_khz(1);
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}
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static struct resource pxamci_resources[] = {
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[0] = {
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.start = 0x41100000,
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.end = 0x41100fff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_MMC,
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.end = IRQ_MMC,
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.flags = IORESOURCE_IRQ,
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},
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};
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static u64 pxamci_dmamask = 0xffffffffUL;
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static struct platform_device pxamci_device = {
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.name = "pxa2xx-mci",
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.id = -1,
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.dev = {
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.dma_mask = &pxamci_dmamask,
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.coherent_dma_mask = 0xffffffff,
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},
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.num_resources = ARRAY_SIZE(pxamci_resources),
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.resource = pxamci_resources,
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};
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void __init pxa_set_mci_info(struct pxamci_platform_data *info)
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{
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pxamci_device.dev.platform_data = info;
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}
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static struct pxa2xx_udc_mach_info pxa_udc_info;
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void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
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{
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memcpy(&pxa_udc_info, info, sizeof *info);
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}
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static struct resource pxa2xx_udc_resources[] = {
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[0] = {
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.start = 0x40600000,
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.end = 0x4060ffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_USB,
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.end = IRQ_USB,
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.flags = IORESOURCE_IRQ,
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},
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};
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static u64 udc_dma_mask = ~(u32)0;
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static struct platform_device udc_device = {
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.name = "pxa2xx-udc",
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.id = -1,
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.resource = pxa2xx_udc_resources,
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.num_resources = ARRAY_SIZE(pxa2xx_udc_resources),
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.dev = {
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.platform_data = &pxa_udc_info,
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.dma_mask = &udc_dma_mask,
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}
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};
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static struct resource pxafb_resources[] = {
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[0] = {
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.start = 0x44000000,
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.end = 0x4400ffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_LCD,
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.end = IRQ_LCD,
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.flags = IORESOURCE_IRQ,
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},
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};
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static u64 fb_dma_mask = ~(u64)0;
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static struct platform_device pxafb_device = {
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.name = "pxa2xx-fb",
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.id = -1,
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.dev = {
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.dma_mask = &fb_dma_mask,
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.coherent_dma_mask = 0xffffffff,
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},
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.num_resources = ARRAY_SIZE(pxafb_resources),
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.resource = pxafb_resources,
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};
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void __init set_pxa_fb_info(struct pxafb_mach_info *info)
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{
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pxafb_device.dev.platform_data = info;
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}
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void __init set_pxa_fb_parent(struct device *parent_dev)
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{
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pxafb_device.dev.parent = parent_dev;
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}
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static struct platform_device ffuart_device = {
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.name = "pxa2xx-uart",
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.id = 0,
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};
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static struct platform_device btuart_device = {
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.name = "pxa2xx-uart",
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.id = 1,
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};
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static struct platform_device stuart_device = {
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.name = "pxa2xx-uart",
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.id = 2,
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};
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static struct platform_device hwuart_device = {
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.name = "pxa2xx-uart",
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.id = 3,
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};
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static struct resource i2c_resources[] = {
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{
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.start = 0x40301680,
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.end = 0x403016a3,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_I2C,
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.end = IRQ_I2C,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device i2c_device = {
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.name = "pxa2xx-i2c",
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.id = 0,
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.resource = i2c_resources,
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.num_resources = ARRAY_SIZE(i2c_resources),
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};
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void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
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{
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i2c_device.dev.platform_data = info;
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}
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static struct resource i2s_resources[] = {
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{
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.start = 0x40400000,
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.end = 0x40400083,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_I2S,
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.end = IRQ_I2S,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device i2s_device = {
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.name = "pxa2xx-i2s",
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.id = -1,
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.resource = i2s_resources,
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.num_resources = ARRAY_SIZE(i2s_resources),
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};
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static u64 pxaficp_dmamask = ~(u32)0;
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static struct platform_device pxaficp_device = {
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.name = "pxa2xx-ir",
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.id = -1,
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.dev = {
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.dma_mask = &pxaficp_dmamask,
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.coherent_dma_mask = 0xffffffff,
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},
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};
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void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
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{
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pxaficp_device.dev.platform_data = info;
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}
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static struct platform_device pxartc_device = {
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.name = "sa1100-rtc",
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.id = -1,
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};
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static struct platform_device *devices[] __initdata = {
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&pxamci_device,
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&udc_device,
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&pxafb_device,
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&ffuart_device,
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&btuart_device,
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&stuart_device,
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&pxaficp_device,
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&i2c_device,
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&i2s_device,
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&pxartc_device,
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};
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static int __init pxa_init(void)
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{
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int cpuid, ret;
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ret = platform_add_devices(devices, ARRAY_SIZE(devices));
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if (ret)
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return ret;
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/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
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cpuid = read_cpuid(CPUID_ID);
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if (((cpuid >> 4) & 0xfff) == 0x2d0 ||
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((cpuid >> 4) & 0xfff) == 0x290)
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ret = platform_device_register(&hwuart_device);
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return ret;
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}
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subsys_initcall(pxa_init);
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