forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
776 lines
19 KiB
776 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* linux/arch/arm/mach-sa1100/assabet.c |
|
* |
|
* Author: Nicolas Pitre |
|
* |
|
* This file contains all Assabet-specific tweaks. |
|
*/ |
|
#include <linux/init.h> |
|
#include <linux/kernel.h> |
|
#include <linux/module.h> |
|
#include <linux/errno.h> |
|
#include <linux/gpio/gpio-reg.h> |
|
#include <linux/gpio/machine.h> |
|
#include <linux/gpio_keys.h> |
|
#include <linux/ioport.h> |
|
#include <linux/platform_data/sa11x0-serial.h> |
|
#include <linux/regulator/fixed.h> |
|
#include <linux/regulator/machine.h> |
|
#include <linux/serial_core.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/mfd/ucb1x00.h> |
|
#include <linux/mtd/mtd.h> |
|
#include <linux/mtd/partitions.h> |
|
#include <linux/delay.h> |
|
#include <linux/mm.h> |
|
#include <linux/leds.h> |
|
#include <linux/slab.h> |
|
|
|
#include <video/sa1100fb.h> |
|
|
|
#include <mach/hardware.h> |
|
#include <asm/mach-types.h> |
|
#include <asm/setup.h> |
|
#include <asm/page.h> |
|
#include <asm/pgtable-hwdef.h> |
|
#include <asm/tlbflush.h> |
|
|
|
#include <asm/mach/arch.h> |
|
#include <asm/mach/flash.h> |
|
#include <linux/platform_data/irda-sa11x0.h> |
|
#include <asm/mach/map.h> |
|
#include <mach/assabet.h> |
|
#include <linux/platform_data/mfd-mcp-sa11x0.h> |
|
#include <mach/irqs.h> |
|
|
|
#include "generic.h" |
|
|
|
#define ASSABET_BCR_DB1110 \ |
|
(ASSABET_BCR_SPK_OFF | \ |
|
ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ |
|
ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ |
|
ASSABET_BCR_IRDA_MD0) |
|
|
|
#define ASSABET_BCR_DB1111 \ |
|
(ASSABET_BCR_SPK_OFF | \ |
|
ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ |
|
ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ |
|
ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_STEREO_LB | \ |
|
ASSABET_BCR_IRDA_MD0 | ASSABET_BCR_CF_RST) |
|
|
|
unsigned long SCR_value = ASSABET_SCR_INIT; |
|
EXPORT_SYMBOL(SCR_value); |
|
|
|
static struct gpio_chip *assabet_bcr_gc; |
|
|
|
static const char *assabet_names[] = { |
|
"cf_pwr", "cf_gfx_reset", "nsoft_reset", "irda_fsel", |
|
"irda_md0", "irda_md1", "stereo_loopback", "ncf_bus_on", |
|
"audio_pwr_on", "light_pwr_on", "lcd16data", "lcd_pwr_on", |
|
"rs232_on", "nred_led", "ngreen_led", "vib_on", |
|
"com_dtr", "com_rts", "radio_wake_mod", "i2c_enab", |
|
"tvir_enab", "qmute", "radio_pwr_on", "spkr_off", |
|
"rs232_valid", "com_dcd", "com_cts", "com_dsr", |
|
"radio_cts", "radio_dsr", "radio_dcd", "radio_ri", |
|
}; |
|
|
|
/* The old deprecated interface */ |
|
void ASSABET_BCR_frob(unsigned int mask, unsigned int val) |
|
{ |
|
unsigned long m = mask, v = val; |
|
|
|
assabet_bcr_gc->set_multiple(assabet_bcr_gc, &m, &v); |
|
} |
|
EXPORT_SYMBOL(ASSABET_BCR_frob); |
|
|
|
static int __init assabet_init_gpio(void __iomem *reg, u32 def_val) |
|
{ |
|
struct gpio_chip *gc; |
|
|
|
writel_relaxed(def_val, reg); |
|
|
|
gc = gpio_reg_init(NULL, reg, -1, 32, "assabet", 0xff000000, def_val, |
|
assabet_names, NULL, NULL); |
|
|
|
if (IS_ERR(gc)) |
|
return PTR_ERR(gc); |
|
|
|
assabet_bcr_gc = gc; |
|
|
|
return gc->base; |
|
} |
|
|
|
/* |
|
* The codec reset goes to three devices, so we need to release |
|
* the rest when any one of these requests it. However, that |
|
* causes the ADV7171 to consume around 100mA - more than half |
|
* the LCD-blanked power. |
|
* |
|
* With the ADV7171, LCD and backlight enabled, we go over |
|
* budget on the MAX846 Li-Ion charger, and if no Li-Ion battery |
|
* is connected, the Assabet crashes. |
|
*/ |
|
#define RST_UCB1X00 (1 << 0) |
|
#define RST_UDA1341 (1 << 1) |
|
#define RST_ADV7171 (1 << 2) |
|
|
|
#define SDA GPIO_GPIO(15) |
|
#define SCK GPIO_GPIO(18) |
|
#define MOD GPIO_GPIO(17) |
|
|
|
static void adv7171_start(void) |
|
{ |
|
GPSR = SCK; |
|
udelay(1); |
|
GPSR = SDA; |
|
udelay(2); |
|
GPCR = SDA; |
|
} |
|
|
|
static void adv7171_stop(void) |
|
{ |
|
GPSR = SCK; |
|
udelay(2); |
|
GPSR = SDA; |
|
udelay(1); |
|
} |
|
|
|
static void adv7171_send(unsigned byte) |
|
{ |
|
unsigned i; |
|
|
|
for (i = 0; i < 8; i++, byte <<= 1) { |
|
GPCR = SCK; |
|
udelay(1); |
|
if (byte & 0x80) |
|
GPSR = SDA; |
|
else |
|
GPCR = SDA; |
|
udelay(1); |
|
GPSR = SCK; |
|
udelay(1); |
|
} |
|
GPCR = SCK; |
|
udelay(1); |
|
GPSR = SDA; |
|
udelay(1); |
|
GPDR &= ~SDA; |
|
GPSR = SCK; |
|
udelay(1); |
|
if (GPLR & SDA) |
|
printk(KERN_WARNING "No ACK from ADV7171\n"); |
|
udelay(1); |
|
GPCR = SCK | SDA; |
|
udelay(1); |
|
GPDR |= SDA; |
|
udelay(1); |
|
} |
|
|
|
static void adv7171_write(unsigned reg, unsigned val) |
|
{ |
|
unsigned gpdr = GPDR; |
|
unsigned gplr = GPLR; |
|
|
|
ASSABET_BCR_frob(ASSABET_BCR_AUDIO_ON, ASSABET_BCR_AUDIO_ON); |
|
udelay(100); |
|
|
|
GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */ |
|
GPDR = (GPDR | SCK | MOD) & ~SDA; |
|
udelay(10); |
|
if (!(GPLR & SDA)) |
|
printk(KERN_WARNING "Something dragging SDA down?\n"); |
|
GPDR |= SDA; |
|
|
|
adv7171_start(); |
|
adv7171_send(0x54); |
|
adv7171_send(reg); |
|
adv7171_send(val); |
|
adv7171_stop(); |
|
|
|
/* Restore GPIO state for L3 bus */ |
|
GPSR = gplr & (SDA | SCK | MOD); |
|
GPCR = (~gplr) & (SDA | SCK | MOD); |
|
GPDR = gpdr; |
|
} |
|
|
|
static void adv7171_sleep(void) |
|
{ |
|
/* Put the ADV7171 into sleep mode */ |
|
adv7171_write(0x04, 0x40); |
|
} |
|
|
|
static unsigned codec_nreset; |
|
|
|
static void assabet_codec_reset(unsigned mask, int set) |
|
{ |
|
unsigned long flags; |
|
bool old; |
|
|
|
local_irq_save(flags); |
|
old = !codec_nreset; |
|
if (set) |
|
codec_nreset &= ~mask; |
|
else |
|
codec_nreset |= mask; |
|
|
|
if (old != !codec_nreset) { |
|
if (codec_nreset) { |
|
ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST); |
|
adv7171_sleep(); |
|
} else { |
|
ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST); |
|
} |
|
} |
|
local_irq_restore(flags); |
|
} |
|
|
|
static void assabet_ucb1x00_reset(enum ucb1x00_reset state) |
|
{ |
|
int set = state == UCB_RST_REMOVE || state == UCB_RST_SUSPEND || |
|
state == UCB_RST_PROBE_FAIL; |
|
assabet_codec_reset(RST_UCB1X00, set); |
|
} |
|
|
|
void assabet_uda1341_reset(int set) |
|
{ |
|
assabet_codec_reset(RST_UDA1341, set); |
|
} |
|
EXPORT_SYMBOL(assabet_uda1341_reset); |
|
|
|
|
|
/* |
|
* Assabet flash support code. |
|
*/ |
|
|
|
#ifdef ASSABET_REV_4 |
|
/* |
|
* Phase 4 Assabet has two 28F160B3 flash parts in bank 0: |
|
*/ |
|
static struct mtd_partition assabet_partitions[] = { |
|
{ |
|
.name = "bootloader", |
|
.size = 0x00020000, |
|
.offset = 0, |
|
.mask_flags = MTD_WRITEABLE, |
|
}, { |
|
.name = "bootloader params", |
|
.size = 0x00020000, |
|
.offset = MTDPART_OFS_APPEND, |
|
.mask_flags = MTD_WRITEABLE, |
|
}, { |
|
.name = "jffs", |
|
.size = MTDPART_SIZ_FULL, |
|
.offset = MTDPART_OFS_APPEND, |
|
} |
|
}; |
|
#else |
|
/* |
|
* Phase 5 Assabet has two 28F128J3A flash parts in bank 0: |
|
*/ |
|
static struct mtd_partition assabet_partitions[] = { |
|
{ |
|
.name = "bootloader", |
|
.size = 0x00040000, |
|
.offset = 0, |
|
.mask_flags = MTD_WRITEABLE, |
|
}, { |
|
.name = "bootloader params", |
|
.size = 0x00040000, |
|
.offset = MTDPART_OFS_APPEND, |
|
.mask_flags = MTD_WRITEABLE, |
|
}, { |
|
.name = "jffs", |
|
.size = MTDPART_SIZ_FULL, |
|
.offset = MTDPART_OFS_APPEND, |
|
} |
|
}; |
|
#endif |
|
|
|
static struct flash_platform_data assabet_flash_data = { |
|
.map_name = "cfi_probe", |
|
.parts = assabet_partitions, |
|
.nr_parts = ARRAY_SIZE(assabet_partitions), |
|
}; |
|
|
|
static struct resource assabet_flash_resources[] = { |
|
DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M), |
|
DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_32M), |
|
}; |
|
|
|
|
|
/* |
|
* Assabet IrDA support code. |
|
*/ |
|
|
|
static int assabet_irda_set_power(struct device *dev, unsigned int state) |
|
{ |
|
static unsigned int bcr_state[4] = { |
|
ASSABET_BCR_IRDA_MD0, |
|
ASSABET_BCR_IRDA_MD1|ASSABET_BCR_IRDA_MD0, |
|
ASSABET_BCR_IRDA_MD1, |
|
0 |
|
}; |
|
|
|
if (state < 4) |
|
ASSABET_BCR_frob(ASSABET_BCR_IRDA_MD1 | ASSABET_BCR_IRDA_MD0, |
|
bcr_state[state]); |
|
return 0; |
|
} |
|
|
|
static void assabet_irda_set_speed(struct device *dev, unsigned int speed) |
|
{ |
|
if (speed < 4000000) |
|
ASSABET_BCR_clear(ASSABET_BCR_IRDA_FSEL); |
|
else |
|
ASSABET_BCR_set(ASSABET_BCR_IRDA_FSEL); |
|
} |
|
|
|
static struct irda_platform_data assabet_irda_data = { |
|
.set_power = assabet_irda_set_power, |
|
.set_speed = assabet_irda_set_speed, |
|
}; |
|
|
|
static struct ucb1x00_plat_data assabet_ucb1x00_data = { |
|
.reset = assabet_ucb1x00_reset, |
|
.gpio_base = -1, |
|
.can_wakeup = 1, |
|
}; |
|
|
|
static struct mcp_plat_data assabet_mcp_data = { |
|
.mccr0 = MCCR0_ADM, |
|
.sclk_rate = 11981000, |
|
.codec_pdata = &assabet_ucb1x00_data, |
|
}; |
|
|
|
static void assabet_lcd_set_visual(u32 visual) |
|
{ |
|
u_int is_true_color = visual == FB_VISUAL_TRUECOLOR; |
|
|
|
if (machine_is_assabet()) { |
|
#if 1 // phase 4 or newer Assabet's |
|
if (is_true_color) |
|
ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); |
|
else |
|
ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); |
|
#else |
|
// older Assabet's |
|
if (is_true_color) |
|
ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); |
|
else |
|
ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); |
|
#endif |
|
} |
|
} |
|
|
|
#ifndef ASSABET_PAL_VIDEO |
|
static void assabet_lcd_backlight_power(int on) |
|
{ |
|
if (on) |
|
ASSABET_BCR_set(ASSABET_BCR_LIGHT_ON); |
|
else |
|
ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON); |
|
} |
|
|
|
/* |
|
* Turn on/off the backlight. When turning the backlight on, we wait |
|
* 500us after turning it on so we don't cause the supplies to droop |
|
* when we enable the LCD controller (and cause a hard reset.) |
|
*/ |
|
static void assabet_lcd_power(int on) |
|
{ |
|
if (on) { |
|
ASSABET_BCR_set(ASSABET_BCR_LCD_ON); |
|
udelay(500); |
|
} else |
|
ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); |
|
} |
|
|
|
/* |
|
* The assabet uses a sharp LQ039Q2DS54 LCD module. It is actually |
|
* takes an RGB666 signal, but we provide it with an RGB565 signal |
|
* instead (def_rgb_16). |
|
*/ |
|
static struct sa1100fb_mach_info lq039q2ds54_info = { |
|
.pixclock = 171521, .bpp = 16, |
|
.xres = 320, .yres = 240, |
|
|
|
.hsync_len = 5, .vsync_len = 1, |
|
.left_margin = 61, .upper_margin = 3, |
|
.right_margin = 9, .lower_margin = 0, |
|
|
|
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
|
|
|
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
|
.lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), |
|
|
|
.backlight_power = assabet_lcd_backlight_power, |
|
.lcd_power = assabet_lcd_power, |
|
.set_visual = assabet_lcd_set_visual, |
|
}; |
|
#else |
|
static void assabet_pal_backlight_power(int on) |
|
{ |
|
ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON); |
|
} |
|
|
|
static void assabet_pal_power(int on) |
|
{ |
|
ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); |
|
} |
|
|
|
static struct sa1100fb_mach_info pal_info = { |
|
.pixclock = 67797, .bpp = 16, |
|
.xres = 640, .yres = 512, |
|
|
|
.hsync_len = 64, .vsync_len = 6, |
|
.left_margin = 125, .upper_margin = 70, |
|
.right_margin = 115, .lower_margin = 36, |
|
|
|
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
|
.lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512), |
|
|
|
.backlight_power = assabet_pal_backlight_power, |
|
.lcd_power = assabet_pal_power, |
|
.set_visual = assabet_lcd_set_visual, |
|
}; |
|
#endif |
|
|
|
#ifdef CONFIG_ASSABET_NEPONSET |
|
static struct resource neponset_resources[] = { |
|
DEFINE_RES_MEM(0x10000000, 0x08000000), |
|
DEFINE_RES_MEM(0x18000000, 0x04000000), |
|
DEFINE_RES_MEM(0x40000000, SZ_8K), |
|
DEFINE_RES_IRQ(IRQ_GPIO25), |
|
}; |
|
#endif |
|
|
|
static struct gpiod_lookup_table assabet_cf_gpio_table = { |
|
.dev_id = "sa11x0-pcmcia.1", |
|
.table = { |
|
GPIO_LOOKUP("gpio", 21, "ready", GPIO_ACTIVE_HIGH), |
|
GPIO_LOOKUP("gpio", 22, "detect", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("gpio", 24, "bvd2", GPIO_ACTIVE_HIGH), |
|
GPIO_LOOKUP("gpio", 25, "bvd1", GPIO_ACTIVE_HIGH), |
|
GPIO_LOOKUP("assabet", 1, "reset", GPIO_ACTIVE_HIGH), |
|
GPIO_LOOKUP("assabet", 7, "bus-enable", GPIO_ACTIVE_LOW), |
|
{ }, |
|
}, |
|
}; |
|
|
|
static struct regulator_consumer_supply assabet_cf_vcc_consumers[] = { |
|
REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.1"), |
|
}; |
|
|
|
static struct fixed_voltage_config assabet_cf_vcc_pdata __initdata = { |
|
.supply_name = "cf-power", |
|
.microvolts = 3300000, |
|
}; |
|
|
|
static struct gpiod_lookup_table assabet_cf_vcc_gpio_table = { |
|
.dev_id = "reg-fixed-voltage.0", |
|
.table = { |
|
GPIO_LOOKUP("assabet", 0, NULL, GPIO_ACTIVE_HIGH), |
|
{ }, |
|
}, |
|
}; |
|
|
|
static struct gpio_led assabet_leds[] __initdata = { |
|
{ |
|
.name = "assabet:red", |
|
.default_trigger = "cpu0", |
|
.active_low = 1, |
|
.default_state = LEDS_GPIO_DEFSTATE_KEEP, |
|
}, { |
|
.name = "assabet:green", |
|
.default_trigger = "heartbeat", |
|
.active_low = 1, |
|
.default_state = LEDS_GPIO_DEFSTATE_KEEP, |
|
}, |
|
}; |
|
|
|
static const struct gpio_led_platform_data assabet_leds_pdata __initconst = { |
|
.num_leds = ARRAY_SIZE(assabet_leds), |
|
.leds = assabet_leds, |
|
}; |
|
|
|
static struct gpio_keys_button assabet_keys_buttons[] = { |
|
{ |
|
.gpio = 0, |
|
.irq = IRQ_GPIO0, |
|
.desc = "gpio0", |
|
.wakeup = 1, |
|
.can_disable = 1, |
|
.debounce_interval = 5, |
|
}, { |
|
.gpio = 1, |
|
.irq = IRQ_GPIO1, |
|
.desc = "gpio1", |
|
.wakeup = 1, |
|
.can_disable = 1, |
|
.debounce_interval = 5, |
|
}, |
|
}; |
|
|
|
static const struct gpio_keys_platform_data assabet_keys_pdata = { |
|
.buttons = assabet_keys_buttons, |
|
.nbuttons = ARRAY_SIZE(assabet_keys_buttons), |
|
.rep = 0, |
|
}; |
|
|
|
static struct gpiod_lookup_table assabet_uart1_gpio_table = { |
|
.dev_id = "sa11x0-uart.1", |
|
.table = { |
|
GPIO_LOOKUP("assabet", 16, "dtr", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 17, "rts", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 25, "dcd", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 26, "cts", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 27, "dsr", GPIO_ACTIVE_LOW), |
|
{ }, |
|
}, |
|
}; |
|
|
|
static struct gpiod_lookup_table assabet_uart3_gpio_table = { |
|
.dev_id = "sa11x0-uart.3", |
|
.table = { |
|
GPIO_LOOKUP("assabet", 28, "cts", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 29, "dsr", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 30, "dcd", GPIO_ACTIVE_LOW), |
|
GPIO_LOOKUP("assabet", 31, "rng", GPIO_ACTIVE_LOW), |
|
{ }, |
|
}, |
|
}; |
|
|
|
static void __init assabet_init(void) |
|
{ |
|
/* |
|
* Ensure that the power supply is in "high power" mode. |
|
*/ |
|
GPSR = GPIO_GPIO16; |
|
GPDR |= GPIO_GPIO16; |
|
|
|
/* |
|
* Ensure that these pins are set as outputs and are driving |
|
* logic 0. This ensures that we won't inadvertently toggle |
|
* the WS latch in the CPLD, and we don't float causing |
|
* excessive power drain. --rmk |
|
*/ |
|
GPCR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; |
|
GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; |
|
|
|
/* |
|
* Also set GPIO27 as an output; this is used to clock UART3 |
|
* via the FPGA and as otherwise has no pullups or pulldowns, |
|
* so stop it floating. |
|
*/ |
|
GPCR = GPIO_GPIO27; |
|
GPDR |= GPIO_GPIO27; |
|
|
|
/* |
|
* Set up registers for sleep mode. |
|
*/ |
|
PWER = PWER_GPIO0; |
|
PGSR = 0; |
|
PCFR = 0; |
|
PSDR = 0; |
|
PPDR |= PPC_TXD3 | PPC_TXD1; |
|
PPSR |= PPC_TXD3 | PPC_TXD1; |
|
|
|
sa11x0_ppc_configure_mcp(); |
|
|
|
if (machine_has_neponset()) { |
|
#ifndef CONFIG_ASSABET_NEPONSET |
|
printk( "Warning: Neponset detected but full support " |
|
"hasn't been configured in the kernel\n" ); |
|
#else |
|
platform_device_register_simple("neponset", 0, |
|
neponset_resources, ARRAY_SIZE(neponset_resources)); |
|
#endif |
|
} else { |
|
gpiod_add_lookup_table(&assabet_uart1_gpio_table); |
|
gpiod_add_lookup_table(&assabet_uart3_gpio_table); |
|
gpiod_add_lookup_table(&assabet_cf_vcc_gpio_table); |
|
|
|
sa11x0_register_fixed_regulator(0, &assabet_cf_vcc_pdata, |
|
assabet_cf_vcc_consumers, |
|
ARRAY_SIZE(assabet_cf_vcc_consumers), |
|
true); |
|
|
|
} |
|
|
|
platform_device_register_resndata(NULL, "gpio-keys", 0, |
|
NULL, 0, |
|
&assabet_keys_pdata, |
|
sizeof(assabet_keys_pdata)); |
|
|
|
gpio_led_register_device(-1, &assabet_leds_pdata); |
|
|
|
#ifndef ASSABET_PAL_VIDEO |
|
sa11x0_register_lcd(&lq039q2ds54_info); |
|
#else |
|
sa11x0_register_lcd(&pal_video); |
|
#endif |
|
sa11x0_register_mtd(&assabet_flash_data, assabet_flash_resources, |
|
ARRAY_SIZE(assabet_flash_resources)); |
|
sa11x0_register_irda(&assabet_irda_data); |
|
sa11x0_register_mcp(&assabet_mcp_data); |
|
|
|
if (!machine_has_neponset()) |
|
sa11x0_register_pcmcia(1, &assabet_cf_gpio_table); |
|
} |
|
|
|
/* |
|
* On Assabet, we must probe for the Neponset board _before_ |
|
* paging_init() has occurred to actually determine the amount |
|
* of RAM available. To do so, we map the appropriate IO section |
|
* in the page table here in order to access GPIO registers. |
|
*/ |
|
static void __init map_sa1100_gpio_regs( void ) |
|
{ |
|
unsigned long phys = __PREG(GPLR) & PMD_MASK; |
|
unsigned long virt = (unsigned long)io_p2v(phys); |
|
int prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO); |
|
pmd_t *pmd; |
|
|
|
pmd = pmd_off_k(virt); |
|
*pmd = __pmd(phys | prot); |
|
flush_pmd_entry(pmd); |
|
} |
|
|
|
/* |
|
* Read System Configuration "Register" |
|
* (taken from "Intel StrongARM SA-1110 Microprocessor Development Board |
|
* User's Guide", section 4.4.1) |
|
* |
|
* This same scan is performed in arch/arm/boot/compressed/head-sa1100.S |
|
* to set up the serial port for decompression status messages. We |
|
* repeat it here because the kernel may not be loaded as a zImage, and |
|
* also because it's a hassle to communicate the SCR value to the kernel |
|
* from the decompressor. |
|
* |
|
* Note that IRQs are guaranteed to be disabled. |
|
*/ |
|
static void __init get_assabet_scr(void) |
|
{ |
|
unsigned long scr, i; |
|
|
|
GPDR |= 0x3fc; /* Configure GPIO 9:2 as outputs */ |
|
GPSR = 0x3fc; /* Write 0xFF to GPIO 9:2 */ |
|
GPDR &= ~(0x3fc); /* Configure GPIO 9:2 as inputs */ |
|
for(i = 100; i--; ) /* Read GPIO 9:2 */ |
|
scr = GPLR; |
|
GPDR |= 0x3fc; /* restore correct pin direction */ |
|
scr &= 0x3fc; /* save as system configuration byte. */ |
|
SCR_value = scr; |
|
} |
|
|
|
static void __init |
|
fixup_assabet(struct tag *tags, char **cmdline) |
|
{ |
|
/* This must be done before any call to machine_has_neponset() */ |
|
map_sa1100_gpio_regs(); |
|
get_assabet_scr(); |
|
|
|
if (machine_has_neponset()) |
|
printk("Neponset expansion board detected\n"); |
|
} |
|
|
|
|
|
static void assabet_uart_pm(struct uart_port *port, u_int state, u_int oldstate) |
|
{ |
|
if (port->mapbase == _Ser1UTCR0) { |
|
if (state) |
|
ASSABET_BCR_clear(ASSABET_BCR_RS232EN); |
|
else |
|
ASSABET_BCR_set(ASSABET_BCR_RS232EN); |
|
} |
|
} |
|
|
|
static struct sa1100_port_fns assabet_port_fns __initdata = { |
|
.pm = assabet_uart_pm, |
|
}; |
|
|
|
static struct map_desc assabet_io_desc[] __initdata = { |
|
{ /* Board Control Register */ |
|
.virtual = 0xf1000000, |
|
.pfn = __phys_to_pfn(0x12000000), |
|
.length = 0x00100000, |
|
.type = MT_DEVICE |
|
}, { /* MQ200 */ |
|
.virtual = 0xf2800000, |
|
.pfn = __phys_to_pfn(0x4b800000), |
|
.length = 0x00800000, |
|
.type = MT_DEVICE |
|
} |
|
}; |
|
|
|
static void __init assabet_map_io(void) |
|
{ |
|
sa1100_map_io(); |
|
iotable_init(assabet_io_desc, ARRAY_SIZE(assabet_io_desc)); |
|
|
|
/* |
|
* Set SUS bit in SDCR0 so serial port 1 functions. |
|
* Its called GPCLKR0 in my SA1110 manual. |
|
*/ |
|
Ser1SDCR0 |= SDCR0_SUS; |
|
MSC1 = (MSC1 & ~0xffff) | |
|
MSC_NonBrst | MSC_32BitStMem | |
|
MSC_RdAcc(2) | MSC_WrAcc(2) | MSC_Rec(0); |
|
|
|
if (!machine_has_neponset()) |
|
sa1100_register_uart_fns(&assabet_port_fns); |
|
|
|
/* |
|
* When Neponset is attached, the first UART should be |
|
* UART3. That's what Angel is doing and many documents |
|
* are stating this. |
|
* |
|
* We do the Neponset mapping even if Neponset support |
|
* isn't compiled in so the user will still get something on |
|
* the expected physical serial port. |
|
* |
|
* We no longer do this; not all boot loaders support it, |
|
* and UART3 appears to be somewhat unreliable with blob. |
|
*/ |
|
sa1100_register_uart(0, 1); |
|
sa1100_register_uart(2, 3); |
|
} |
|
|
|
void __init assabet_init_irq(void) |
|
{ |
|
unsigned int assabet_gpio_base; |
|
u32 def_val; |
|
|
|
sa1100_init_irq(); |
|
|
|
if (machine_has_neponset()) |
|
def_val = ASSABET_BCR_DB1111; |
|
else |
|
def_val = ASSABET_BCR_DB1110; |
|
|
|
/* |
|
* Angel sets this, but other bootloaders may not. |
|
* |
|
* This must precede any driver calls to BCR_set() or BCR_clear(). |
|
*/ |
|
assabet_gpio_base = assabet_init_gpio((void *)&ASSABET_BCR, def_val); |
|
|
|
assabet_leds[0].gpio = assabet_gpio_base + 13; |
|
assabet_leds[1].gpio = assabet_gpio_base + 14; |
|
} |
|
|
|
MACHINE_START(ASSABET, "Intel-Assabet") |
|
.atag_offset = 0x100, |
|
.fixup = fixup_assabet, |
|
.map_io = assabet_map_io, |
|
.nr_irqs = SA1100_NR_IRQS, |
|
.init_irq = assabet_init_irq, |
|
.init_time = sa1100_timer_init, |
|
.init_machine = assabet_init, |
|
.init_late = sa11x0_init_late, |
|
#ifdef CONFIG_SA1111 |
|
.dma_zone_size = SZ_1M, |
|
#endif |
|
.restart = sa11x0_restart, |
|
MACHINE_END
|
|
|