linux_dsm_epyc7002/arch/arm/mach-sa1100/assabet.c

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// 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/pgtable.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,
};
regulator: fixed: Convert to use GPIO descriptor only As we augmented the regulator core to accept a GPIO descriptor instead of a GPIO number, we can augment the fixed GPIO regulator to look up and pass that descriptor directly from device tree or board GPIO descriptor look up tables. Some boards just auto-enumerate their fixed regulator platform devices and I have assumed they get names like "fixed-regulator.0" but it's pretty hard to guess this. I need some testing from board maintainers to be sure. Other boards are straight forward, using just plain "fixed-regulator" (ID -1) or "fixed-regulator.1" hammering down the device ID. It seems the da9055 and da9211 has never got around to actually passing any enable gpio into its platform data (not the in-tree code anyway) so we can just decide to simply pass a descriptor instead. The fixed GPIO-controlled regulator in mach-pxa/ezx.c was confusingly named "*_dummy_supply_device" while it is a very real device backed by a GPIO line. There is nothing dummy about it at all, so I renamed it with the infix *_regulator_* as part of this patch set. Intel MID portions tested by Andy. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Check the x86 BCM stuff Acked-by: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-06 19:24:36 +07:00
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);
regulator: fixed: Convert to use GPIO descriptor only As we augmented the regulator core to accept a GPIO descriptor instead of a GPIO number, we can augment the fixed GPIO regulator to look up and pass that descriptor directly from device tree or board GPIO descriptor look up tables. Some boards just auto-enumerate their fixed regulator platform devices and I have assumed they get names like "fixed-regulator.0" but it's pretty hard to guess this. I need some testing from board maintainers to be sure. Other boards are straight forward, using just plain "fixed-regulator" (ID -1) or "fixed-regulator.1" hammering down the device ID. It seems the da9055 and da9211 has never got around to actually passing any enable gpio into its platform data (not the in-tree code anyway) so we can just decide to simply pass a descriptor instead. The fixed GPIO-controlled regulator in mach-pxa/ezx.c was confusingly named "*_dummy_supply_device" while it is a very real device backed by a GPIO line. There is nothing dummy about it at all, so I renamed it with the infix *_regulator_* as part of this patch set. Intel MID portions tested by Andy. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Check the x86 BCM stuff Acked-by: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-06 19:24:36 +07:00
gpiod_add_lookup_table(&assabet_cf_vcc_gpio_table);
sa11x0_register_fixed_regulator(0, &assabet_cf_vcc_pdata,
regulator: fixed: Convert to use GPIO descriptor only As we augmented the regulator core to accept a GPIO descriptor instead of a GPIO number, we can augment the fixed GPIO regulator to look up and pass that descriptor directly from device tree or board GPIO descriptor look up tables. Some boards just auto-enumerate their fixed regulator platform devices and I have assumed they get names like "fixed-regulator.0" but it's pretty hard to guess this. I need some testing from board maintainers to be sure. Other boards are straight forward, using just plain "fixed-regulator" (ID -1) or "fixed-regulator.1" hammering down the device ID. It seems the da9055 and da9211 has never got around to actually passing any enable gpio into its platform data (not the in-tree code anyway) so we can just decide to simply pass a descriptor instead. The fixed GPIO-controlled regulator in mach-pxa/ezx.c was confusingly named "*_dummy_supply_device" while it is a very real device backed by a GPIO line. There is nothing dummy about it at all, so I renamed it with the infix *_regulator_* as part of this patch set. Intel MID portions tested by Andy. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Check the x86 BCM stuff Acked-by: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-06 19:24:36 +07:00
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_offset(pud_offset(pgd_offset_k(virt), virt), 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 uninitialized_var(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