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linux/arch/arm/mach-sa1100/collie.c
Richard Purdie 8d48427ecb [ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs 
Convert LOMOMO to use struct device * for GPIOs instead of struct
locomo_dev. This enables access to the GPIOs from code which is not
a locomo device itself (such as audio). Access for gpio 31 is removed
for error handling (no such hardware exists).

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-27 20:58:59 +01:00

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/*
* linux/arch/arm/mach-sa1100/collie.c
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*
* This file contains all Collie-specific tweaks.
*
* 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.
*
* ChangeLog:
* 2006 Pavel Machek <pavel@suse.cz>
* 03-06-2004 John Lenz <lenz@cs.wisc.edu>
* 06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
* 04-16-2001 Lineo Japan,Inc. ...
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/arch/collie.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include <asm/hardware/scoop.h>
#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/locomo.h>
#include <asm/arch/mcp.h>
#include "generic.h"
static struct resource collie_scoop_resources[] = {
[0] = {
.start = 0x40800000,
.end = 0x40800fff,
.flags = IORESOURCE_MEM,
},
};
static struct scoop_config collie_scoop_setup = {
.io_dir = COLLIE_SCOOP_IO_DIR,
.io_out = COLLIE_SCOOP_IO_OUT,
};
struct platform_device colliescoop_device = {
.name = "sharp-scoop",
.id = -1,
.dev = {
.platform_data = &collie_scoop_setup,
},
.num_resources = ARRAY_SIZE(collie_scoop_resources),
.resource = collie_scoop_resources,
};
static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
{
.dev = &colliescoop_device.dev,
.irq = COLLIE_IRQ_GPIO_CF_IRQ,
.cd_irq = COLLIE_IRQ_GPIO_CF_CD,
.cd_irq_str = "PCMCIA0 CD",
},
};
static struct scoop_pcmcia_config collie_pcmcia_config = {
.devs = &collie_pcmcia_scoop[0],
.num_devs = 1,
};
static struct mcp_plat_data collie_mcp_data = {
.mccr0 = MCCR0_ADM | MCCR0_ExtClk,
.sclk_rate = 9216000,
};
#ifdef CONFIG_SHARP_LOCOMO
/*
* low-level UART features.
*/
struct platform_device collie_locomo_device;
static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
if (mctrl & TIOCM_RTS)
locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
else
locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);
if (mctrl & TIOCM_DTR)
locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
else
locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
}
static u_int collie_uart_get_mctrl(struct uart_port *port)
{
int ret = TIOCM_CD;
unsigned int r;
r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
if (r == -ENODEV)
return ret;
if (r & LOCOMO_GPIO_CTS)
ret |= TIOCM_CTS;
if (r & LOCOMO_GPIO_DSR)
ret |= TIOCM_DSR;
return ret;
}
static struct sa1100_port_fns collie_port_fns __initdata = {
.set_mctrl = collie_uart_set_mctrl,
.get_mctrl = collie_uart_get_mctrl,
};
static int collie_uart_probe(struct locomo_dev *dev)
{
return 0;
}
static int collie_uart_remove(struct locomo_dev *dev)
{
return 0;
}
static struct locomo_driver collie_uart_driver = {
.drv = {
.name = "collie_uart",
},
.devid = LOCOMO_DEVID_UART,
.probe = collie_uart_probe,
.remove = collie_uart_remove,
};
static int __init collie_uart_init(void) {
return locomo_driver_register(&collie_uart_driver);
}
device_initcall(collie_uart_init);
#endif
static struct resource locomo_resources[] = {
[0] = {
.start = 0x40000000,
.end = 0x40001fff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_GPIO25,
.end = IRQ_GPIO25,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device collie_locomo_device = {
.name = "locomo",
.id = 0,
.num_resources = ARRAY_SIZE(locomo_resources),
.resource = locomo_resources,
};
static struct platform_device *devices[] __initdata = {
&collie_locomo_device,
&colliescoop_device,
};
static struct mtd_partition collie_partitions[] = {
{
.name = "bootloader",
.offset = 0,
.size = 0x000C0000,
.mask_flags = MTD_WRITEABLE
}, {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = 0x00100000,
}, {
.name = "rootfs",
.offset = MTDPART_OFS_APPEND,
.size = 0x00e20000,
}
};
static void collie_set_vpp(int vpp)
{
write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
if (vpp)
write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
else
write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
}
static struct flash_platform_data collie_flash_data = {
.map_name = "cfi_probe",
.set_vpp = collie_set_vpp,
.parts = collie_partitions,
.nr_parts = ARRAY_SIZE(collie_partitions),
};
static struct resource collie_flash_resources[] = {
{
.start = SA1100_CS0_PHYS,
.end = SA1100_CS0_PHYS + SZ_32M - 1,
.flags = IORESOURCE_MEM,
}
};
static void __init collie_init(void)
{
int ret = 0;
/* cpu initialize */
GAFR = ( GPIO_SSP_TXD | \
GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
GPIO_32_768kHz );
GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
GPLR = GPIO_GPIO18;
// PPC pin setting
PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
GAFR |= GPIO_32_768kHz;
GPDR |= GPIO_32_768kHz;
TUCR = TUCR_32_768kHz;
platform_scoop_config = &collie_pcmcia_config;
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
if (ret) {
printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
}
sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
ARRAY_SIZE(collie_flash_resources));
sa11x0_set_mcp_data(&collie_mcp_data);
sharpsl_save_param();
}
static struct map_desc collie_io_desc[] __initdata = {
{ /* 32M main flash (cs0) */
.virtual = 0xe8000000,
.pfn = __phys_to_pfn(0x00000000),
.length = 0x02000000,
.type = MT_DEVICE
}, { /* 32M boot flash (cs1) */
.virtual = 0xea000000,
.pfn = __phys_to_pfn(0x08000000),
.length = 0x02000000,
.type = MT_DEVICE
}
};
static void __init collie_map_io(void)
{
sa1100_map_io();
iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
#ifdef CONFIG_SHARP_LOCOMO
sa1100_register_uart_fns(&collie_port_fns);
#endif
sa1100_register_uart(0, 3);
sa1100_register_uart(1, 1);
}
MACHINE_START(COLLIE, "Sharp-Collie")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.map_io = collie_map_io,
.init_irq = sa1100_init_irq,
.timer = &sa1100_timer,
.init_machine = collie_init,
MACHINE_END
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