mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 06:12:08 +00:00
729fae44dd
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
314 lines
6.8 KiB
C
314 lines
6.8 KiB
C
/*
|
|
* Support for Compaq iPAQ H3100 and H3600 handheld computers (common code)
|
|
*
|
|
* Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
|
|
* Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/gpio_keys.h>
|
|
#include <linux/input.h>
|
|
#include <linux/mfd/htc-egpio.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/serial_core.h>
|
|
|
|
#include <asm/mach/flash.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/serial_sa1100.h>
|
|
|
|
#include <mach/h3xxx.h>
|
|
|
|
#include "generic.h"
|
|
|
|
void h3xxx_init_gpio(struct gpio_default_state *s, size_t n)
|
|
{
|
|
while (n--) {
|
|
const char *name = s->name;
|
|
int err;
|
|
|
|
if (!name)
|
|
name = "[init]";
|
|
err = gpio_request(s->gpio, name);
|
|
if (err) {
|
|
printk(KERN_ERR "gpio%u: unable to request: %d\n",
|
|
s->gpio, err);
|
|
continue;
|
|
}
|
|
if (s->mode >= 0) {
|
|
err = gpio_direction_output(s->gpio, s->mode);
|
|
} else {
|
|
err = gpio_direction_input(s->gpio);
|
|
}
|
|
if (err) {
|
|
printk(KERN_ERR "gpio%u: unable to set direction: %d\n",
|
|
s->gpio, err);
|
|
continue;
|
|
}
|
|
if (!s->name)
|
|
gpio_free(s->gpio);
|
|
s++;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* H3xxx flash support
|
|
*/
|
|
static struct mtd_partition h3xxx_partitions[] = {
|
|
{
|
|
.name = "H3XXX boot firmware",
|
|
.size = 0x00040000,
|
|
.offset = 0,
|
|
.mask_flags = MTD_WRITEABLE, /* force read-only */
|
|
}, {
|
|
.name = "H3XXX rootfs",
|
|
.size = MTDPART_SIZ_FULL,
|
|
.offset = 0x00040000,
|
|
}
|
|
};
|
|
|
|
static void h3xxx_set_vpp(int vpp)
|
|
{
|
|
gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
|
|
}
|
|
|
|
static int h3xxx_flash_init(void)
|
|
{
|
|
int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
|
|
if (err) {
|
|
pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
|
|
return err;
|
|
}
|
|
|
|
err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
|
|
if (err)
|
|
gpio_free(H3XXX_EGPIO_VPP_ON);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void h3xxx_flash_exit(void)
|
|
{
|
|
gpio_free(H3XXX_EGPIO_VPP_ON);
|
|
}
|
|
|
|
static struct flash_platform_data h3xxx_flash_data = {
|
|
.map_name = "cfi_probe",
|
|
.set_vpp = h3xxx_set_vpp,
|
|
.init = h3xxx_flash_init,
|
|
.exit = h3xxx_flash_exit,
|
|
.parts = h3xxx_partitions,
|
|
.nr_parts = ARRAY_SIZE(h3xxx_partitions),
|
|
};
|
|
|
|
static struct resource h3xxx_flash_resource = {
|
|
.start = SA1100_CS0_PHYS,
|
|
.end = SA1100_CS0_PHYS + SZ_32M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
|
|
/*
|
|
* H3xxx uart support
|
|
*/
|
|
static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
|
|
{
|
|
if (port->mapbase == _Ser3UTCR0) {
|
|
gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
|
|
}
|
|
}
|
|
|
|
static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
|
|
{
|
|
u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
|
|
|
|
if (port->mapbase == _Ser3UTCR0) {
|
|
/*
|
|
* DCD and CTS bits are inverted in GPLR by RS232 transceiver
|
|
*/
|
|
if (gpio_get_value(H3XXX_GPIO_COM_DCD))
|
|
ret &= ~TIOCM_CD;
|
|
if (gpio_get_value(H3XXX_GPIO_COM_CTS))
|
|
ret &= ~TIOCM_CTS;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
|
|
{
|
|
if (port->mapbase == _Ser3UTCR0) {
|
|
if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
|
|
gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
|
|
gpio_free(H3XXX_EGPIO_RS232_ON);
|
|
} else {
|
|
pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
|
|
__func__);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable/Disable wake up events for this serial port.
|
|
* Obviously, we only support this on the normal COM port.
|
|
*/
|
|
static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
|
|
{
|
|
int err = -EINVAL;
|
|
|
|
if (port->mapbase == _Ser3UTCR0) {
|
|
if (enable)
|
|
PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
|
|
else
|
|
PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
|
|
err = 0;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static struct sa1100_port_fns h3xxx_port_fns __initdata = {
|
|
.set_mctrl = h3xxx_uart_set_mctrl,
|
|
.get_mctrl = h3xxx_uart_get_mctrl,
|
|
.pm = h3xxx_uart_pm,
|
|
.set_wake = h3xxx_uart_set_wake,
|
|
};
|
|
|
|
/*
|
|
* EGPIO
|
|
*/
|
|
|
|
static struct resource egpio_resources[] = {
|
|
[0] = {
|
|
.start = H3600_EGPIO_PHYS,
|
|
.end = H3600_EGPIO_PHYS + 0x4 - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct htc_egpio_chip egpio_chips[] = {
|
|
[0] = {
|
|
.reg_start = 0,
|
|
.gpio_base = H3XXX_EGPIO_BASE,
|
|
.num_gpios = 16,
|
|
.direction = HTC_EGPIO_OUTPUT,
|
|
.initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
|
|
},
|
|
};
|
|
|
|
static struct htc_egpio_platform_data egpio_info = {
|
|
.reg_width = 16,
|
|
.bus_width = 16,
|
|
.chip = egpio_chips,
|
|
.num_chips = ARRAY_SIZE(egpio_chips),
|
|
};
|
|
|
|
static struct platform_device h3xxx_egpio = {
|
|
.name = "htc-egpio",
|
|
.id = -1,
|
|
.resource = egpio_resources,
|
|
.num_resources = ARRAY_SIZE(egpio_resources),
|
|
.dev = {
|
|
.platform_data = &egpio_info,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* GPIO keys
|
|
*/
|
|
|
|
static struct gpio_keys_button h3xxx_button_table[] = {
|
|
{
|
|
.code = KEY_POWER,
|
|
.gpio = H3XXX_GPIO_PWR_BUTTON,
|
|
.desc = "Power Button",
|
|
.active_low = 1,
|
|
.type = EV_KEY,
|
|
.wakeup = 1,
|
|
}, {
|
|
.code = KEY_ENTER,
|
|
.gpio = H3XXX_GPIO_ACTION_BUTTON,
|
|
.active_low = 1,
|
|
.desc = "Action button",
|
|
.type = EV_KEY,
|
|
.wakeup = 0,
|
|
},
|
|
};
|
|
|
|
static struct gpio_keys_platform_data h3xxx_keys_data = {
|
|
.buttons = h3xxx_button_table,
|
|
.nbuttons = ARRAY_SIZE(h3xxx_button_table),
|
|
};
|
|
|
|
static struct platform_device h3xxx_keys = {
|
|
.name = "gpio-keys",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &h3xxx_keys_data,
|
|
},
|
|
};
|
|
|
|
static struct platform_device *h3xxx_devices[] = {
|
|
&h3xxx_egpio,
|
|
&h3xxx_keys,
|
|
};
|
|
|
|
void __init h3xxx_mach_init(void)
|
|
{
|
|
sa1100_register_uart_fns(&h3xxx_port_fns);
|
|
sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
|
|
platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
|
|
}
|
|
|
|
static struct map_desc h3600_io_desc[] __initdata = {
|
|
{ /* static memory bank 2 CS#2 */
|
|
.virtual = H3600_BANK_2_VIRT,
|
|
.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
|
|
.length = 0x02800000,
|
|
.type = MT_DEVICE
|
|
}, { /* static memory bank 4 CS#4 */
|
|
.virtual = H3600_BANK_4_VIRT,
|
|
.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
|
|
.length = 0x00800000,
|
|
.type = MT_DEVICE
|
|
}, { /* EGPIO 0 CS#5 */
|
|
.virtual = H3600_EGPIO_VIRT,
|
|
.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
|
|
.length = 0x01000000,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Common map_io initialization
|
|
*/
|
|
|
|
void __init h3xxx_map_io(void)
|
|
{
|
|
sa1100_map_io();
|
|
iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
|
|
|
|
sa1100_register_uart(0, 3); /* Common serial port */
|
|
// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
|
|
|
|
/* Ensure those pins are outputs and driving low */
|
|
PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
|
|
PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
|
|
|
|
/* Configure suspend conditions */
|
|
PGSR = 0;
|
|
PCFR = PCFR_OPDE;
|
|
PSDR = 0;
|
|
|
|
GPCR = 0x0fffffff; /* All outputs are set low by default */
|
|
GPDR = 0; /* Configure all GPIOs as input */
|
|
}
|
|
|