mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 04:20:54 +07:00
85eb226c44
Patch from David Brownell
Lubbock updates:
* Provide an address for the SMC91x chip that doesn't generate
a boot-time warning (matching the EEPROM).
* Update MMC support to (a) detect card insert/remove, and
(b) report the readonly switch setting for SD cards.
Previously, MMC/SD cards had to be present at boot time else they
couldn't be detected.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
368 lines
8.5 KiB
C
368 lines
8.5 KiB
C
/*
|
|
* linux/arch/arm/mach-pxa/lubbock.c
|
|
*
|
|
* Support for the Intel DBPXA250 Development Platform.
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Jun 15, 2001
|
|
* 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/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/sysdev.h>
|
|
#include <linux/major.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/memory.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/irq.h>
|
|
|
|
#include <asm/hardware/sa1111.h>
|
|
|
|
#include <asm/arch/pxa-regs.h>
|
|
#include <asm/arch/lubbock.h>
|
|
#include <asm/arch/udc.h>
|
|
#include <asm/arch/irda.h>
|
|
#include <asm/arch/pxafb.h>
|
|
#include <asm/arch/mmc.h>
|
|
|
|
#include "generic.h"
|
|
|
|
|
|
#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
|
|
|
|
void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
|
|
{
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
|
|
local_irq_restore(flags);
|
|
}
|
|
EXPORT_SYMBOL(lubbock_set_misc_wr);
|
|
|
|
static unsigned long lubbock_irq_enabled;
|
|
|
|
static void lubbock_mask_irq(unsigned int irq)
|
|
{
|
|
int lubbock_irq = (irq - LUBBOCK_IRQ(0));
|
|
LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
|
|
}
|
|
|
|
static void lubbock_unmask_irq(unsigned int irq)
|
|
{
|
|
int lubbock_irq = (irq - LUBBOCK_IRQ(0));
|
|
/* the irq can be acknowledged only if deasserted, so it's done here */
|
|
LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
|
|
LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
|
|
}
|
|
|
|
static struct irqchip lubbock_irq_chip = {
|
|
.ack = lubbock_mask_irq,
|
|
.mask = lubbock_mask_irq,
|
|
.unmask = lubbock_unmask_irq,
|
|
};
|
|
|
|
static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
|
|
struct pt_regs *regs)
|
|
{
|
|
unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
|
|
do {
|
|
GEDR(0) = GPIO_bit(0); /* clear our parent irq */
|
|
if (likely(pending)) {
|
|
irq = LUBBOCK_IRQ(0) + __ffs(pending);
|
|
desc = irq_desc + irq;
|
|
desc_handle_irq(irq, desc, regs);
|
|
}
|
|
pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
|
|
} while (pending);
|
|
}
|
|
|
|
static void __init lubbock_init_irq(void)
|
|
{
|
|
int irq;
|
|
|
|
pxa_init_irq();
|
|
|
|
/* setup extra lubbock irqs */
|
|
for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
|
|
set_irq_chip(irq, &lubbock_irq_chip);
|
|
set_irq_handler(irq, do_level_IRQ);
|
|
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
|
|
}
|
|
|
|
set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
|
|
set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int lubbock_irq_resume(struct sys_device *dev)
|
|
{
|
|
LUB_IRQ_MASK_EN = lubbock_irq_enabled;
|
|
return 0;
|
|
}
|
|
|
|
static struct sysdev_class lubbock_irq_sysclass = {
|
|
set_kset_name("cpld_irq"),
|
|
.resume = lubbock_irq_resume,
|
|
};
|
|
|
|
static struct sys_device lubbock_irq_device = {
|
|
.cls = &lubbock_irq_sysclass,
|
|
};
|
|
|
|
static int __init lubbock_irq_device_init(void)
|
|
{
|
|
int ret = sysdev_class_register(&lubbock_irq_sysclass);
|
|
if (ret == 0)
|
|
ret = sysdev_register(&lubbock_irq_device);
|
|
return ret;
|
|
}
|
|
|
|
device_initcall(lubbock_irq_device_init);
|
|
|
|
#endif
|
|
|
|
static int lubbock_udc_is_connected(void)
|
|
{
|
|
return (LUB_MISC_RD & (1 << 9)) == 0;
|
|
}
|
|
|
|
static struct pxa2xx_udc_mach_info udc_info __initdata = {
|
|
.udc_is_connected = lubbock_udc_is_connected,
|
|
// no D+ pullup; lubbock can't connect/disconnect in software
|
|
};
|
|
|
|
static struct platform_device lub_audio_device = {
|
|
.name = "pxa2xx-ac97",
|
|
.id = -1,
|
|
};
|
|
|
|
static struct resource sa1111_resources[] = {
|
|
[0] = {
|
|
.start = 0x10000000,
|
|
.end = 0x10001fff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = LUBBOCK_SA1111_IRQ,
|
|
.end = LUBBOCK_SA1111_IRQ,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device sa1111_device = {
|
|
.name = "sa1111",
|
|
.id = -1,
|
|
.num_resources = ARRAY_SIZE(sa1111_resources),
|
|
.resource = sa1111_resources,
|
|
};
|
|
|
|
static struct resource smc91x_resources[] = {
|
|
[0] = {
|
|
.name = "smc91x-regs",
|
|
.start = 0x0c000c00,
|
|
.end = 0x0c0fffff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = LUBBOCK_ETH_IRQ,
|
|
.end = LUBBOCK_ETH_IRQ,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[2] = {
|
|
.name = "smc91x-attrib",
|
|
.start = 0x0e000000,
|
|
.end = 0x0e0fffff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct platform_device smc91x_device = {
|
|
.name = "smc91x",
|
|
.id = -1,
|
|
.num_resources = ARRAY_SIZE(smc91x_resources),
|
|
.resource = smc91x_resources,
|
|
};
|
|
|
|
static struct platform_device *devices[] __initdata = {
|
|
&sa1111_device,
|
|
&lub_audio_device,
|
|
&smc91x_device,
|
|
};
|
|
|
|
static struct pxafb_mach_info sharp_lm8v31 __initdata = {
|
|
.pixclock = 270000,
|
|
.xres = 640,
|
|
.yres = 480,
|
|
.bpp = 16,
|
|
.hsync_len = 1,
|
|
.left_margin = 3,
|
|
.right_margin = 3,
|
|
.vsync_len = 1,
|
|
.upper_margin = 0,
|
|
.lower_margin = 0,
|
|
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
|
|
.cmap_greyscale = 0,
|
|
.cmap_inverse = 0,
|
|
.cmap_static = 0,
|
|
.lccr0 = LCCR0_SDS,
|
|
.lccr3 = LCCR3_PCP | LCCR3_Acb(255),
|
|
};
|
|
|
|
#define MMC_POLL_RATE msecs_to_jiffies(1000)
|
|
|
|
static void lubbock_mmc_poll(unsigned long);
|
|
static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
|
|
|
|
static struct timer_list mmc_timer = {
|
|
.function = lubbock_mmc_poll,
|
|
};
|
|
|
|
static void lubbock_mmc_poll(unsigned long data)
|
|
{
|
|
unsigned long flags;
|
|
|
|
/* clear any previous irq state, then ... */
|
|
local_irq_save(flags);
|
|
LUB_IRQ_SET_CLR &= ~(1 << 0);
|
|
local_irq_restore(flags);
|
|
|
|
/* poll until mmc/sd card is removed */
|
|
if (LUB_IRQ_SET_CLR & (1 << 0))
|
|
mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
|
|
else {
|
|
(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
|
|
enable_irq(LUBBOCK_SD_IRQ);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
|
|
{
|
|
/* IRQ is level triggered; disable, and poll for removal */
|
|
disable_irq(irq);
|
|
mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
|
|
|
|
return mmc_detect_int(irq, data, regs);
|
|
}
|
|
|
|
static int lubbock_mci_init(struct device *dev,
|
|
irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
|
|
void *data)
|
|
{
|
|
/* setup GPIO for PXA25x MMC controller */
|
|
pxa_gpio_mode(GPIO6_MMCCLK_MD);
|
|
pxa_gpio_mode(GPIO8_MMCCS0_MD);
|
|
|
|
/* detect card insert/eject */
|
|
mmc_detect_int = detect_int;
|
|
init_timer(&mmc_timer);
|
|
mmc_timer.data = (unsigned long) data;
|
|
return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
|
|
SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
|
|
}
|
|
|
|
static int lubbock_mci_get_ro(struct device *dev)
|
|
{
|
|
return (LUB_MISC_RD & (1 << 2)) != 0;
|
|
}
|
|
|
|
static void lubbock_mci_exit(struct device *dev, void *data)
|
|
{
|
|
free_irq(LUBBOCK_SD_IRQ, data);
|
|
del_timer_sync(&mmc_timer);
|
|
}
|
|
|
|
static struct pxamci_platform_data lubbock_mci_platform_data = {
|
|
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
|
|
.detect_delay = 1,
|
|
.init = lubbock_mci_init,
|
|
.get_ro = lubbock_mci_get_ro,
|
|
.exit = lubbock_mci_exit,
|
|
};
|
|
|
|
static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
|
|
{
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
if (mode & IR_SIRMODE) {
|
|
LUB_MISC_WR &= ~(1 << 4);
|
|
} else if (mode & IR_FIRMODE) {
|
|
LUB_MISC_WR |= 1 << 4;
|
|
}
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static struct pxaficp_platform_data lubbock_ficp_platform_data = {
|
|
.transceiver_cap = IR_SIRMODE | IR_FIRMODE,
|
|
.transceiver_mode = lubbock_irda_transceiver_mode,
|
|
};
|
|
|
|
static void __init lubbock_init(void)
|
|
{
|
|
pxa_set_udc_info(&udc_info);
|
|
set_pxa_fb_info(&sharp_lm8v31);
|
|
pxa_set_mci_info(&lubbock_mci_platform_data);
|
|
pxa_set_ficp_info(&lubbock_ficp_platform_data);
|
|
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
|
|
}
|
|
|
|
static struct map_desc lubbock_io_desc[] __initdata = {
|
|
{ /* CPLD */
|
|
.virtual = LUBBOCK_FPGA_VIRT,
|
|
.pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
|
|
.length = 0x00100000,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
static void __init lubbock_map_io(void)
|
|
{
|
|
pxa_map_io();
|
|
iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
|
|
|
|
/* This enables the BTUART */
|
|
pxa_gpio_mode(GPIO42_BTRXD_MD);
|
|
pxa_gpio_mode(GPIO43_BTTXD_MD);
|
|
pxa_gpio_mode(GPIO44_BTCTS_MD);
|
|
pxa_gpio_mode(GPIO45_BTRTS_MD);
|
|
|
|
/* This is for the SMC chip select */
|
|
pxa_gpio_mode(GPIO79_nCS_3_MD);
|
|
|
|
/* setup sleep mode values */
|
|
PWER = 0x00000002;
|
|
PFER = 0x00000000;
|
|
PRER = 0x00000002;
|
|
PGSR0 = 0x00008000;
|
|
PGSR1 = 0x003F0202;
|
|
PGSR2 = 0x0001C000;
|
|
PCFR |= PCFR_OPDE;
|
|
}
|
|
|
|
MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
|
|
/* Maintainer: MontaVista Software Inc. */
|
|
.phys_ram = 0xa0000000,
|
|
.phys_io = 0x40000000,
|
|
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
|
|
.map_io = lubbock_map_io,
|
|
.init_irq = lubbock_init_irq,
|
|
.timer = &pxa_timer,
|
|
.init_machine = lubbock_init,
|
|
MACHINE_END
|