b7f720d68c
remove au_readl/au_writel, remove the predefined GPIO1/2 KSEG1 register
addresses and fix the fallout in all boards and drivers.
This also fixes a bug in the mtx-1_wdt driver which was introduced by
commit 6ea8115bb6
("Convert mtx1 wdt to be a platform device and use generic GPIO API")
before this patch mtx-1_wdt only modified GPIO215, the patch then
used the gpio resource information as bit index into the GPIO2 register
but the conversion to the GPIO API didn't realize that.
With this patch the drivers original behaviour is restored and GPIO15
is left alone.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Florian Fainelli <florian@openwrt.org>
To: Linux-MIPS <linux-mips@linux-mips.org>
Cc: linux-watchdog@vger.kernel.org
Cc: Wim Van Sebroeck <wim@iguana.be>
Patchwork: https://patchwork.linux-mips.org/patch/2381/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org
134 lines
4.7 KiB
C
134 lines
4.7 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* 4G Systems MTX-1 board setup.
|
|
*
|
|
* Copyright 2003, 2008 MontaVista Software Inc.
|
|
* Author: MontaVista Software, Inc. <source@mvista.com>
|
|
* Bruno Randolf <bruno.randolf@4g-systems.biz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/gpio.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pm.h>
|
|
|
|
#include <asm/reboot.h>
|
|
#include <asm/mach-au1x00/au1000.h>
|
|
|
|
#include <prom.h>
|
|
|
|
char irq_tab_alchemy[][5] __initdata = {
|
|
[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
|
|
[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
|
|
[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
|
|
[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
|
|
[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
|
|
[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
|
|
[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
|
|
[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
|
|
};
|
|
|
|
extern int (*board_pci_idsel)(unsigned int devsel, int assert);
|
|
int mtx1_pci_idsel(unsigned int devsel, int assert);
|
|
|
|
static void mtx1_reset(char *c)
|
|
{
|
|
/* Jump to the reset vector */
|
|
__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
|
|
}
|
|
|
|
static void mtx1_power_off(void)
|
|
{
|
|
while (1)
|
|
asm volatile (
|
|
" .set mips32 \n"
|
|
" wait \n"
|
|
" .set mips0 \n");
|
|
}
|
|
|
|
void __init board_setup(void)
|
|
{
|
|
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
|
|
/* Enable USB power switch */
|
|
alchemy_gpio_direction_output(204, 0);
|
|
#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
|
|
|
|
#ifdef CONFIG_PCI
|
|
#if defined(__MIPSEB__)
|
|
au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
|
|
#else
|
|
au_writel(0xf, Au1500_PCI_CFG);
|
|
#endif
|
|
board_pci_idsel = mtx1_pci_idsel;
|
|
#endif
|
|
|
|
/* Initialize sys_pinfunc */
|
|
au_writel(SYS_PF_NI2, SYS_PINFUNC);
|
|
|
|
/* Initialize GPIO */
|
|
au_writel(~0, KSEG1ADDR(AU1000_SYS_PHYS_ADDR) + SYS_TRIOUTCLR);
|
|
alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */
|
|
alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */
|
|
alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */
|
|
alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */
|
|
|
|
/* Enable LED and set it to green */
|
|
alchemy_gpio_direction_output(211, 1); /* green on */
|
|
alchemy_gpio_direction_output(212, 0); /* red off */
|
|
|
|
pm_power_off = mtx1_power_off;
|
|
_machine_halt = mtx1_power_off;
|
|
_machine_restart = mtx1_reset;
|
|
|
|
printk(KERN_INFO "4G Systems MTX-1 Board\n");
|
|
}
|
|
|
|
int
|
|
mtx1_pci_idsel(unsigned int devsel, int assert)
|
|
{
|
|
/* This function is only necessary to support a proprietary Cardbus
|
|
* adapter on the mtx-1 "singleboard" variant. It triggers a custom
|
|
* logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
|
|
*/
|
|
if (assert && devsel != 0)
|
|
/* Suppress signal to Cardbus */
|
|
alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */
|
|
else
|
|
alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */
|
|
|
|
udelay(1);
|
|
return 1;
|
|
}
|
|
|
|
static int __init mtx1_init_irq(void)
|
|
{
|
|
irq_set_irq_type(AU1500_GPIO204_INT, IRQF_TRIGGER_HIGH);
|
|
irq_set_irq_type(AU1500_GPIO201_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO202_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO203_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO205_INT, IRQF_TRIGGER_LOW);
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(mtx1_init_irq);
|