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linux/arch/arm/mach-pxa/lpd270.c
Lennert Buytenhek e9937d4b0a [ARM] 3417/1: add support for logicpd pxa270 card engine 
Patch from Lennert Buytenhek

Add support for the LogicPD PXA270 Card Engine.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-28 21:08:13 +01:00

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8.8 KiB
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/*
* linux/arch/arm/mach-pxa/lpd270.c
*
* Support for the LogicPD PXA270 Card Engine.
* Derived from the mainstone code, which carries these notices:
*
* Author: Nicolas Pitre
* Created: Nov 05, 2002
* Copyright: MontaVista Software Inc.
*
* 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/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/lpd270.h>
#include <asm/arch/audio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/irda.h>
#include <asm/arch/ohci.h>
#include "generic.h"
static unsigned int lpd270_irq_enabled;
static void lpd270_mask_irq(unsigned int irq)
{
int lpd270_irq = irq - LPD270_IRQ(0);
__raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
lpd270_irq_enabled &= ~(1 << lpd270_irq);
__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
}
static void lpd270_unmask_irq(unsigned int irq)
{
int lpd270_irq = irq - LPD270_IRQ(0);
lpd270_irq_enabled |= 1 << lpd270_irq;
__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
}
static struct irqchip lpd270_irq_chip = {
.ack = lpd270_mask_irq,
.mask = lpd270_mask_irq,
.unmask = lpd270_unmask_irq,
};
static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
struct pt_regs *regs)
{
unsigned long pending;
pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
do {
GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
if (likely(pending)) {
irq = LPD270_IRQ(0) + __ffs(pending);
desc = irq_desc + irq;
desc_handle_irq(irq, desc, regs);
pending = __raw_readw(LPD270_INT_STATUS) &
lpd270_irq_enabled;
}
} while (pending);
}
static void __init lpd270_init_irq(void)
{
int irq;
pxa_init_irq();
__raw_writew(0, LPD270_INT_MASK);
__raw_writew(0, LPD270_INT_STATUS);
/* setup extra LogicPD PXA270 irqs */
for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
set_irq_chip(irq, &lpd270_irq_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
}
#ifdef CONFIG_PM
static int lpd270_irq_resume(struct sys_device *dev)
{
__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
return 0;
}
static struct sysdev_class lpd270_irq_sysclass = {
set_kset_name("cpld_irq"),
.resume = lpd270_irq_resume,
};
static struct sys_device lpd270_irq_device = {
.cls = &lpd270_irq_sysclass,
};
static int __init lpd270_irq_device_init(void)
{
int ret = sysdev_class_register(&lpd270_irq_sysclass);
if (ret == 0)
ret = sysdev_register(&lpd270_irq_device);
return ret;
}
device_initcall(lpd270_irq_device_init);
#endif
static struct resource smc91x_resources[] = {
[0] = {
.start = LPD270_ETH_PHYS,
.end = (LPD270_ETH_PHYS + 0xfffff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = LPD270_ETHERNET_IRQ,
.end = LPD270_ETHERNET_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
static struct platform_device lpd270_audio_device = {
.name = "pxa2xx-ac97",
.id = -1,
};
static struct resource lpd270_flash_resources[] = {
[0] = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = PXA_CS1_PHYS,
.end = PXA_CS1_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
},
};
static struct mtd_partition lpd270_flash0_partitions[] = {
{
.name = "Bootloader",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE /* force read-only */
}, {
.name = "Kernel",
.size = 0x00400000,
.offset = 0x00040000,
}, {
.name = "Filesystem",
.size = MTDPART_SIZ_FULL,
.offset = 0x00440000
},
};
static struct flash_platform_data lpd270_flash_data[2] = {
{
.name = "processor-flash",
.map_name = "cfi_probe",
.parts = lpd270_flash0_partitions,
.nr_parts = ARRAY_SIZE(lpd270_flash0_partitions),
}, {
.name = "mainboard-flash",
.map_name = "cfi_probe",
.parts = NULL,
.nr_parts = 0,
}
};
static struct platform_device lpd270_flash_device[2] = {
{
.name = "pxa2xx-flash",
.id = 0,
.dev = {
.platform_data = &lpd270_flash_data[0],
},
.resource = &lpd270_flash_resources[0],
.num_resources = 1,
}, {
.name = "pxa2xx-flash",
.id = 1,
.dev = {
.platform_data = &lpd270_flash_data[1],
},
.resource = &lpd270_flash_resources[1],
.num_resources = 1,
},
};
static void lpd270_backlight_power(int on)
{
if (on) {
pxa_gpio_mode(GPIO16_PWM0_MD);
pxa_set_cken(CKEN0_PWM0, 1);
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x3ff;
PWM_PERVAL0 = 0x3ff;
} else {
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x0;
PWM_PERVAL0 = 0x3FF;
pxa_set_cken(CKEN0_PWM0, 0);
}
}
/* 5.7" TFT QVGA (LoLo display number 1) */
static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
.pixclock = 100000,
.xres = 240,
.yres = 320,
.bpp = 16,
.hsync_len = 64,
.left_margin = 0x27,
.right_margin = 0x09,
.vsync_len = 0x04,
.upper_margin = 0x08,
.lower_margin = 0x14,
.sync = 0,
.lccr0 = 0x07800080,
.lccr3 = 0x04400007,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 6.4" TFT VGA (LoLo display number 5) */
static struct pxafb_mach_info sharp_lq64d343 __initdata = {
.pixclock = 20000,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 49,
.left_margin = 0x89,
.right_margin = 0x19,
.vsync_len = 18,
.upper_margin = 0x22,
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.lccr0 = 0x07800080,
.lccr3 = 0x04400001,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 3.5" TFT QVGA (LoLo display number 8) */
static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
.pixclock = 100000,
.xres = 240,
.yres = 320,
.bpp = 16,
.hsync_len = 0x34,
.left_margin = 0x09,
.right_margin = 0x09,
.vsync_len = 0x08,
.upper_margin = 0x05,
.lower_margin = 0x14,
.sync = 0,
.lccr0 = 0x07800080,
.lccr3 = 0x04400007,
.pxafb_backlight_power = lpd270_backlight_power,
};
static struct platform_device *platform_devices[] __initdata = {
&smc91x_device,
&lpd270_audio_device,
&lpd270_flash_device[0],
&lpd270_flash_device[1],
};
static int lpd270_ohci_init(struct device *dev)
{
/* setup Port1 GPIO pin. */
pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN); /* USBHPWR1 */
pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
/* Set the Power Control Polarity Low and Power Sense
Polarity Low to active low. */
UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
return 0;
}
static struct pxaohci_platform_data lpd270_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.init = lpd270_ohci_init,
};
static void __init lpd270_init(void)
{
lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
lpd270_flash_data[1].width = 4;
/*
* System bus arbiter setting:
* - Core_Park
* - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
*/
ARB_CNTRL = ARB_CORE_PARK | 0x234;
/*
* On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
*/
pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
// set_pxa_fb_info(&sharp_lq057q3dc02);
set_pxa_fb_info(&sharp_lq64d343);
// set_pxa_fb_info(&sharp_lq035q7db02_20);
pxa_set_ohci_info(&lpd270_ohci_platform_data);
}
static struct map_desc lpd270_io_desc[] __initdata = {
{
.virtual = LPD270_CPLD_VIRT,
.pfn = __phys_to_pfn(LPD270_CPLD_PHYS),
.length = LPD270_CPLD_SIZE,
.type = MT_DEVICE,
},
};
static void __init lpd270_map_io(void)
{
pxa_map_io();
iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
/* initialize sleep mode regs (wake-up sources, etc) */
PGSR0 = 0x00008800;
PGSR1 = 0x00000002;
PGSR2 = 0x0001FC00;
PGSR3 = 0x00001F81;
PWER = 0xC0000002;
PRER = 0x00000002;
PFER = 0x00000002;
/* for use I SRAM as framebuffer. */
PSLR |= 0x00000F04;
PCFR = 0x00000066;
}
MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
/* Maintainer: Peter Barada */
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.boot_params = 0xa0000100,
.map_io = lpd270_map_io,
.init_irq = lpd270_init_irq,
.timer = &pxa_timer,
.init_machine = lpd270_init,
MACHINE_END
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