![Eric Miao](/assets/img/avatar_default.png)
This isn't perfect but at least solves the problem of pm.c's dependency on register definitions in <mach/lubbock.h>, which doesn't make much sense. Signed-off-by: Eric Miao <eric.miao@marvell.com>
564 lines
13 KiB
C
564 lines
13 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/platform_device.h>
|
|
#include <linux/sysdev.h>
|
|
#include <linux/major.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/smc91x.h>
|
|
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/spi/ads7846.h>
|
|
#include <mach/pxa2xx_spi.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/memory.h>
|
|
#include <asm/mach-types.h>
|
|
#include <mach/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/hardware/sa1111.h>
|
|
|
|
#include <mach/pxa25x.h>
|
|
#include <mach/gpio.h>
|
|
#include <mach/audio.h>
|
|
#include <mach/lubbock.h>
|
|
#include <mach/udc.h>
|
|
#include <mach/irda.h>
|
|
#include <mach/pxafb.h>
|
|
#include <mach/mmc.h>
|
|
#include <mach/pm.h>
|
|
|
|
#include "generic.h"
|
|
#include "clock.h"
|
|
#include "devices.h"
|
|
|
|
static unsigned long lubbock_pin_config[] __initdata = {
|
|
GPIO15_nCS_1, /* CS1 - Flash */
|
|
GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
|
|
GPIO79_nCS_3, /* CS3 - SMC ethernet */
|
|
GPIO80_nCS_4, /* CS4 - SA1111 */
|
|
|
|
/* SSP data pins */
|
|
GPIO23_SSP1_SCLK,
|
|
GPIO25_SSP1_TXD,
|
|
GPIO26_SSP1_RXD,
|
|
|
|
/* LCD - 16bpp DSTN */
|
|
GPIO58_LCD_LDD_0,
|
|
GPIO59_LCD_LDD_1,
|
|
GPIO60_LCD_LDD_2,
|
|
GPIO61_LCD_LDD_3,
|
|
GPIO62_LCD_LDD_4,
|
|
GPIO63_LCD_LDD_5,
|
|
GPIO64_LCD_LDD_6,
|
|
GPIO65_LCD_LDD_7,
|
|
GPIO66_LCD_LDD_8,
|
|
GPIO67_LCD_LDD_9,
|
|
GPIO68_LCD_LDD_10,
|
|
GPIO69_LCD_LDD_11,
|
|
GPIO70_LCD_LDD_12,
|
|
GPIO71_LCD_LDD_13,
|
|
GPIO72_LCD_LDD_14,
|
|
GPIO73_LCD_LDD_15,
|
|
GPIO74_LCD_FCLK,
|
|
GPIO75_LCD_LCLK,
|
|
GPIO76_LCD_PCLK,
|
|
|
|
/* BTUART */
|
|
GPIO42_BTUART_RXD,
|
|
GPIO43_BTUART_TXD,
|
|
GPIO44_BTUART_CTS,
|
|
GPIO45_BTUART_RTS,
|
|
|
|
/* PC Card */
|
|
GPIO48_nPOE,
|
|
GPIO49_nPWE,
|
|
GPIO50_nPIOR,
|
|
GPIO51_nPIOW,
|
|
GPIO52_nPCE_1,
|
|
GPIO53_nPCE_2,
|
|
GPIO54_nPSKTSEL,
|
|
GPIO55_nPREG,
|
|
GPIO56_nPWAIT,
|
|
GPIO57_nIOIS16,
|
|
|
|
/* MMC */
|
|
GPIO6_MMC_CLK,
|
|
GPIO8_MMC_CS0,
|
|
|
|
/* wakeup */
|
|
GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
|
|
};
|
|
|
|
#define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
|
|
#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
|
|
|
|
void lubbock_set_hexled(uint32_t value)
|
|
{
|
|
LUB_HEXLED = value;
|
|
}
|
|
|
|
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 irq_chip lubbock_irq_chip = {
|
|
.name = "FPGA",
|
|
.ack = lubbock_mask_irq,
|
|
.mask = lubbock_mask_irq,
|
|
.unmask = lubbock_unmask_irq,
|
|
};
|
|
|
|
static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
|
|
{
|
|
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);
|
|
generic_handle_irq(irq);
|
|
}
|
|
pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
|
|
} while (pending);
|
|
}
|
|
|
|
static void __init lubbock_init_irq(void)
|
|
{
|
|
int irq;
|
|
|
|
pxa25x_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, handle_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), IRQ_TYPE_EDGE_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 = {
|
|
.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 = -ENODEV;
|
|
|
|
if (machine_is_lubbock()) {
|
|
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 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,
|
|
};
|
|
|
|
/* ADS7846 is connected through SSP ... and if your board has J5 populated,
|
|
* you can select it to replace the ucb1400 by switching the touchscreen cable
|
|
* (to J5) and poking board registers (as done below). Else it's only useful
|
|
* for the temperature sensors.
|
|
*/
|
|
static struct pxa2xx_spi_master pxa_ssp_master_info = {
|
|
.num_chipselect = 1,
|
|
};
|
|
|
|
static int lubbock_ads7846_pendown_state(void)
|
|
{
|
|
/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
|
|
return 0;
|
|
}
|
|
|
|
static struct ads7846_platform_data ads_info = {
|
|
.model = 7846,
|
|
.vref_delay_usecs = 100, /* internal, no cap */
|
|
.get_pendown_state = lubbock_ads7846_pendown_state,
|
|
// .x_plate_ohms = 500, /* GUESS! */
|
|
// .y_plate_ohms = 500, /* GUESS! */
|
|
};
|
|
|
|
static void ads7846_cs(u32 command)
|
|
{
|
|
static const unsigned TS_nCS = 1 << 11;
|
|
lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
|
|
}
|
|
|
|
static struct pxa2xx_spi_chip ads_hw = {
|
|
.tx_threshold = 1,
|
|
.rx_threshold = 2,
|
|
.cs_control = ads7846_cs,
|
|
};
|
|
|
|
static struct spi_board_info spi_board_info[] __initdata = { {
|
|
.modalias = "ads7846",
|
|
.platform_data = &ads_info,
|
|
.controller_data = &ads_hw,
|
|
.irq = LUBBOCK_BB_IRQ,
|
|
.max_speed_hz = 120000 /* max sample rate at 3V */
|
|
* 26 /* command + data + overhead */,
|
|
.bus_num = 1,
|
|
.chip_select = 0,
|
|
},
|
|
};
|
|
|
|
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 | IORESOURCE_IRQ_HIGHEDGE,
|
|
},
|
|
[2] = {
|
|
.name = "smc91x-attrib",
|
|
.start = 0x0e000000,
|
|
.end = 0x0e0fffff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct smc91x_platdata lubbock_smc91x_info = {
|
|
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
|
|
};
|
|
|
|
static struct platform_device smc91x_device = {
|
|
.name = "smc91x",
|
|
.id = -1,
|
|
.num_resources = ARRAY_SIZE(smc91x_resources),
|
|
.resource = smc91x_resources,
|
|
.dev = {
|
|
.platform_data = &lubbock_smc91x_info,
|
|
},
|
|
};
|
|
|
|
static struct resource flash_resources[] = {
|
|
[0] = {
|
|
.start = 0x00000000,
|
|
.end = SZ_64M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 0x04000000,
|
|
.end = 0x04000000 + SZ_64M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct mtd_partition lubbock_partitions[] = {
|
|
{
|
|
.name = "Bootloader",
|
|
.size = 0x00040000,
|
|
.offset = 0,
|
|
.mask_flags = MTD_WRITEABLE /* force read-only */
|
|
},{
|
|
.name = "Kernel",
|
|
.size = 0x00100000,
|
|
.offset = 0x00040000,
|
|
},{
|
|
.name = "Filesystem",
|
|
.size = MTDPART_SIZ_FULL,
|
|
.offset = 0x00140000
|
|
}
|
|
};
|
|
|
|
static struct flash_platform_data lubbock_flash_data[2] = {
|
|
{
|
|
.map_name = "cfi_probe",
|
|
.parts = lubbock_partitions,
|
|
.nr_parts = ARRAY_SIZE(lubbock_partitions),
|
|
}, {
|
|
.map_name = "cfi_probe",
|
|
.parts = NULL,
|
|
.nr_parts = 0,
|
|
}
|
|
};
|
|
|
|
static struct platform_device lubbock_flash_device[2] = {
|
|
{
|
|
.name = "pxa2xx-flash",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &lubbock_flash_data[0],
|
|
},
|
|
.resource = &flash_resources[0],
|
|
.num_resources = 1,
|
|
},
|
|
{
|
|
.name = "pxa2xx-flash",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &lubbock_flash_data[1],
|
|
},
|
|
.resource = &flash_resources[1],
|
|
.num_resources = 1,
|
|
},
|
|
};
|
|
|
|
static struct platform_device *devices[] __initdata = {
|
|
&sa1111_device,
|
|
&smc91x_device,
|
|
&lubbock_flash_device[0],
|
|
&lubbock_flash_device[1],
|
|
};
|
|
|
|
static struct pxafb_mode_info sharp_lm8v31_mode = {
|
|
.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,
|
|
};
|
|
|
|
static struct pxafb_mach_info sharp_lm8v31 = {
|
|
.modes = &sharp_lm8v31_mode,
|
|
.num_modes = 1,
|
|
.cmap_inverse = 0,
|
|
.cmap_static = 0,
|
|
.lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
|
|
LCD_AC_BIAS_FREQ(255),
|
|
};
|
|
|
|
#define MMC_POLL_RATE msecs_to_jiffies(1000)
|
|
|
|
static void lubbock_mmc_poll(unsigned long);
|
|
static irq_handler_t mmc_detect_int;
|
|
|
|
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);
|
|
enable_irq(LUBBOCK_SD_IRQ);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t lubbock_detect_int(int irq, void *data)
|
|
{
|
|
/* 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);
|
|
}
|
|
|
|
static int lubbock_mci_init(struct device *dev,
|
|
irq_handler_t detect_int,
|
|
void *data)
|
|
{
|
|
/* 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,
|
|
IRQF_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;
|
|
}
|
|
pxa2xx_transceiver_mode(dev, mode);
|
|
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)
|
|
{
|
|
int flashboot = (LUB_CONF_SWITCHES & 1);
|
|
|
|
pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
|
|
|
|
clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
|
|
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);
|
|
pxa_set_ac97_info(NULL);
|
|
|
|
lubbock_flash_data[0].width = lubbock_flash_data[1].width =
|
|
(BOOT_DEF & 1) ? 2 : 4;
|
|
/* Compensate for the nROMBT switch which swaps the flash banks */
|
|
printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
|
|
flashboot?"Flash":"ROM", flashboot);
|
|
|
|
lubbock_flash_data[flashboot^1].name = "application-flash";
|
|
lubbock_flash_data[flashboot].name = "boot-rom";
|
|
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
|
|
|
|
pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
|
|
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
|
|
}
|
|
|
|
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));
|
|
|
|
PCFR |= PCFR_OPDE;
|
|
}
|
|
|
|
MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
|
|
/* Maintainer: MontaVista Software Inc. */
|
|
.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
|