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linux/arch/arm/mach-sa1100/h3600.c
Dmitry Artamonow 22f9740552 ARM: 5814/1: SA1100: h3100/h3600: convert all users of assign_h3600_egpio to gpiolib 
Use of gpio_request/gpio_free in some callbacks may look ugly, but
corresponding drivers (sa1100_serial and sa1100_fb) don't provide (yet)
init/exit hooks and registering these gpios in *_mach_init is also
not possible, because htc-gpio driver starts a bit later...

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-06 16:52:55 +00:00

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/*
* Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
*
* Copyright 2000,1 Compaq Computer Corporation.
*
* Use consistent with the GNU GPL is permitted,
* provided that this copyright notice is
* preserved in its entirety in all copies and derived works.
*
* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
* FITNESS FOR ANY PARTICULAR PURPOSE.
*
* Author: Jamey Hicks.
*
* History:
*
* 2001-10-?? Andrew Christian Added support for iPAQ H3800
* and abstracted EGPIO interface.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/mfd/htc-egpio.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/serial_core.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/mach/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/irda.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include <mach/h3600.h>
#include <mach/h3600_gpio.h>
#include "generic.h"
void (*assign_h3600_egpio)(enum ipaq_egpio_type x, int level);
EXPORT_SYMBOL(assign_h3600_egpio);
struct gpio_default_state {
int gpio;
int mode;
const char *name;
};
#define GPIO_MODE_IN -1
#define GPIO_MODE_OUT0 0
#define GPIO_MODE_OUT1 1
static 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)
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);
}
}
/*
* 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,
},
};
static struct platform_device *h3xxx_devices[] = {
&h3xxx_egpio,
};
static 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
*/
static 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;
PWER = PWER_GPIO0;
PCFR = PCFR_OPDE;
PSDR = 0;
}
/************************* H3100 *************************/
#ifdef CONFIG_SA1100_H3100
#define H3100_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3100_egpio = 0;
static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
{
unsigned int egpio = 0;
long gpio = 0;
unsigned long flags;
switch (x) {
case IPAQ_EGPIO_LCD_POWER:
egpio |= EGPIO_H3600_LCD_ON;
gpio |= GPIO_H3100_LCD_3V_ON;
break;
case IPAQ_EGPIO_LCD_ENABLE:
break;
case IPAQ_EGPIO_CODEC_NRESET:
egpio |= EGPIO_H3600_CODEC_NRESET;
break;
case IPAQ_EGPIO_AUDIO_ON:
gpio |= GPIO_H3100_AUD_PWR_ON
| GPIO_H3100_AUD_ON;
break;
case IPAQ_EGPIO_QMUTE:
gpio |= GPIO_H3100_QMUTE;
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
egpio |= EGPIO_H3600_OPT_NVRAM_ON;
break;
case IPAQ_EGPIO_OPT_ON:
egpio |= EGPIO_H3600_OPT_ON;
break;
case IPAQ_EGPIO_CARD_RESET:
egpio |= EGPIO_H3600_CARD_RESET;
break;
case IPAQ_EGPIO_OPT_RESET:
egpio |= EGPIO_H3600_OPT_RESET;
break;
case IPAQ_EGPIO_IR_ON:
gpio |= GPIO_H3100_IR_ON;
break;
case IPAQ_EGPIO_IR_FSEL:
gpio |= GPIO_H3100_IR_FSEL;
break;
case IPAQ_EGPIO_RS232_ON:
egpio |= EGPIO_H3600_RS232_ON;
break;
case IPAQ_EGPIO_VPP_ON:
egpio |= EGPIO_H3600_VPP_ON;
break;
}
if (egpio || gpio) {
local_irq_save(flags);
if (setp) {
h3100_egpio |= egpio;
GPSR = gpio;
} else {
h3100_egpio &= ~egpio;
GPCR = gpio;
}
H3100_EGPIO = h3100_egpio;
local_irq_restore(flags);
}
}
#define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON \
| GPIO_H3100_GPIO3 \
| GPIO_H3100_QMUTE \
| GPIO_H3100_LCD_3V_ON \
| GPIO_H3100_AUD_ON \
| GPIO_H3100_AUD_PWR_ON \
| GPIO_H3100_IR_ON \
| GPIO_H3100_IR_FSEL)
/*
* helper for sa1100fb
*/
static void h3100_lcd_power(int enable)
{
if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
gpio_free(H3XXX_EGPIO_LCD_ON);
}
}
static void __init h3100_map_io(void)
{
h3xxx_map_io();
sa1100fb_lcd_power = h3100_lcd_power;
/* Initialize h3100-specific values here */
GPCR = 0x0fffffff; /* All outputs are set low by default */
GPDR = GPIO_H3600_L3_CLOCK |
GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
H3100_DIRECT_EGPIO;
/* Older bootldrs put GPIO2-9 in alternate mode on the
assumption that they are used for video */
GAFR &= ~H3100_DIRECT_EGPIO;
H3100_EGPIO = h3100_egpio;
assign_h3600_egpio = h3100_control_egpio;
}
/*
* This turns the IRDA power on or off on the Compaq H3100
*/
static int h3100_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3100_GPIO_IR_ON, state);
return 0;
}
static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
{
gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
}
static struct irda_platform_data h3100_irda_data = {
.set_power = h3100_irda_set_power,
.set_speed = h3100_irda_set_speed,
};
static struct gpio_default_state h3100_default_gpio[] = {
{ H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" },
{ H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" },
{ H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" },
{ H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" },
{ H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" },
{ H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
};
static void __init h3100_mach_init(void)
{
h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
h3xxx_mach_init();
sa11x0_register_irda(&h3100_irda_data);
}
MACHINE_START(H3100, "Compaq iPAQ H3100")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.boot_params = 0xc0000100,
.map_io = h3100_map_io,
.init_irq = sa1100_init_irq,
.timer = &sa1100_timer,
.init_machine = h3100_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3100 */
/************************* H3600 *************************/
#ifdef CONFIG_SA1100_H3600
#define H3600_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;
static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
{
unsigned int egpio = 0;
unsigned long flags;
switch (x) {
case IPAQ_EGPIO_LCD_POWER:
egpio |= EGPIO_H3600_LCD_ON |
EGPIO_H3600_LCD_PCI |
EGPIO_H3600_LCD_5V_ON |
EGPIO_H3600_LVDD_ON;
break;
case IPAQ_EGPIO_LCD_ENABLE:
break;
case IPAQ_EGPIO_CODEC_NRESET:
egpio |= EGPIO_H3600_CODEC_NRESET;
break;
case IPAQ_EGPIO_AUDIO_ON:
egpio |= EGPIO_H3600_AUD_AMP_ON |
EGPIO_H3600_AUD_PWR_ON;
break;
case IPAQ_EGPIO_QMUTE:
egpio |= EGPIO_H3600_QMUTE;
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
egpio |= EGPIO_H3600_OPT_NVRAM_ON;
break;
case IPAQ_EGPIO_OPT_ON:
egpio |= EGPIO_H3600_OPT_ON;
break;
case IPAQ_EGPIO_CARD_RESET:
egpio |= EGPIO_H3600_CARD_RESET;
break;
case IPAQ_EGPIO_OPT_RESET:
egpio |= EGPIO_H3600_OPT_RESET;
break;
case IPAQ_EGPIO_IR_ON:
egpio |= EGPIO_H3600_IR_ON;
break;
case IPAQ_EGPIO_IR_FSEL:
egpio |= EGPIO_H3600_IR_FSEL;
break;
case IPAQ_EGPIO_RS232_ON:
egpio |= EGPIO_H3600_RS232_ON;
break;
case IPAQ_EGPIO_VPP_ON:
egpio |= EGPIO_H3600_VPP_ON;
break;
}
if (egpio) {
local_irq_save(flags);
if (setp)
h3600_egpio |= egpio;
else
h3600_egpio &= ~egpio;
H3600_EGPIO = h3600_egpio;
local_irq_restore(flags);
}
}
/*
* helper for sa1100fb
*/
static void h3600_lcd_power(int enable)
{
if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power"))
goto err1;
if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control"))
goto err2;
if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v"))
goto err3;
if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v"))
goto err4;
gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
gpio_free(H3600_EGPIO_LVDD_ON);
err4: gpio_free(H3600_EGPIO_LCD_5V_ON);
err3: gpio_free(H3600_EGPIO_LCD_PCI);
err2: gpio_free(H3XXX_EGPIO_LCD_ON);
err1: return;
}
static void __init h3600_map_io(void)
{
h3xxx_map_io();
sa1100fb_lcd_power = h3600_lcd_power;
/* Initialize h3600-specific values here */
GPCR = 0x0fffffff; /* All outputs are set low by default */
GPDR = GPIO_H3600_L3_CLOCK |
GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0;
H3600_EGPIO = h3600_egpio; /* Maintains across sleep? */
assign_h3600_egpio = h3600_control_egpio;
}
/*
* This turns the IRDA power on or off on the Compaq H3600
*/
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3600_EGPIO_IR_ON, state);
return 0;
}
static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
{
gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
}
static int h3600_irda_startup(struct device *dev)
{
int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
if (err)
goto err1;
err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
if (err)
goto err2;
err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
if (err)
goto err2;
err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
if (err)
goto err3;
return 0;
err3: gpio_free(H3600_EGPIO_IR_FSEL);
err2: gpio_free(H3600_EGPIO_IR_ON);
err1: return err;
}
static void h3600_irda_shutdown(struct device *dev)
{
gpio_free(H3600_EGPIO_IR_ON);
gpio_free(H3600_EGPIO_IR_FSEL);
}
static struct irda_platform_data h3600_irda_data = {
.set_power = h3600_irda_set_power,
.set_speed = h3600_irda_set_speed,
.startup = h3600_irda_startup,
.shutdown = h3600_irda_shutdown,
};
static struct gpio_default_state h3600_default_gpio[] = {
{ H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" },
{ H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" },
{ H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" },
};
static void __init h3600_mach_init(void)
{
h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
h3xxx_mach_init();
sa11x0_register_irda(&h3600_irda_data);
}
MACHINE_START(H3600, "Compaq iPAQ H3600")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.boot_params = 0xc0000100,
.map_io = h3600_map_io,
.init_irq = sa1100_init_irq,
.timer = &sa1100_timer,
.init_machine = h3600_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3600 */
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