diff options
Diffstat (limited to 'arch/mips/vr41xx/common')
-rw-r--r-- | arch/mips/vr41xx/common/Makefile | 3 | ||||
-rw-r--r-- | arch/mips/vr41xx/common/vrc4173.c | 582 |
2 files changed, 1 insertions, 584 deletions
diff --git a/arch/mips/vr41xx/common/Makefile b/arch/mips/vr41xx/common/Makefile index aa373974c80..975d5caf9d1 100644 --- a/arch/mips/vr41xx/common/Makefile +++ b/arch/mips/vr41xx/common/Makefile @@ -2,7 +2,6 @@ # Makefile for common code of the NEC VR4100 series. # -obj-y += bcu.o cmu.o icu.o init.o irq.o pmu.o type.o -obj-$(CONFIG_VRC4173) += vrc4173.o +obj-y += bcu.o cmu.o icu.o init.o irq.o pmu.o type.o EXTRA_AFLAGS := $(CFLAGS) diff --git a/arch/mips/vr41xx/common/vrc4173.c b/arch/mips/vr41xx/common/vrc4173.c deleted file mode 100644 index 3f1ae9721e4..00000000000 --- a/arch/mips/vr41xx/common/vrc4173.c +++ /dev/null @@ -1,582 +0,0 @@ -/* - * vrc4173.c, NEC VRC4173 base driver for NEC VR4122/VR4131. - * - * Copyright (C) 2001-2003 MontaVista Software Inc. - * Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> - * Copyright (C) 2004 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> - * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org) - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include <linux/init.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/pci.h> -#include <linux/spinlock.h> -#include <linux/types.h> - -#include <asm/vr41xx/irq.h> -#include <asm/vr41xx/vr41xx.h> -#include <asm/vr41xx/vrc4173.h> - -MODULE_DESCRIPTION("NEC VRC4173 base driver for NEC VR4122/4131"); -MODULE_AUTHOR("Yoichi Yuasa <yyuasa@mvista.com>"); -MODULE_LICENSE("GPL"); - -#define VRC4173_CMUCLKMSK 0x040 - #define MSKPIU 0x0001 - #define MSKKIU 0x0002 - #define MSKAIU 0x0004 - #define MSKPS2CH1 0x0008 - #define MSKPS2CH2 0x0010 - #define MSKUSB 0x0020 - #define MSKCARD1 0x0040 - #define MSKCARD2 0x0080 - #define MSKAC97 0x0100 - #define MSK48MUSB 0x0400 - #define MSK48MPIN 0x0800 - #define MSK48MOSC 0x1000 -#define VRC4173_CMUSRST 0x042 - #define USBRST 0x0001 - #define CARD1RST 0x0002 - #define CARD2RST 0x0004 - #define AC97RST 0x0008 - -#define VRC4173_SYSINT1REG 0x060 -#define VRC4173_MSYSINT1REG 0x06c -#define VRC4173_MPIUINTREG 0x06e -#define VRC4173_MAIUINTREG 0x070 -#define VRC4173_MKIUINTREG 0x072 - -#define VRC4173_SELECTREG 0x09e - #define SEL3 0x0008 - #define SEL2 0x0004 - #define SEL1 0x0002 - #define SEL0 0x0001 - -static struct pci_device_id vrc4173_id_table[] __devinitdata = { - { .vendor = PCI_VENDOR_ID_NEC, - .device = PCI_DEVICE_ID_NEC_VRC4173, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, }, - { .vendor = 0, }, -}; - -unsigned long vrc4173_io_offset = 0; - -EXPORT_SYMBOL(vrc4173_io_offset); - -static int vrc4173_initialized; -static uint16_t vrc4173_cmuclkmsk; -static uint16_t vrc4173_selectreg; -static DEFINE_SPINLOCK(vrc4173_cmu_lock); -static DEFINE_SPINLOCK(vrc4173_giu_lock); - -static inline void set_cmusrst(uint16_t val) -{ - uint16_t cmusrst; - - cmusrst = vrc4173_inw(VRC4173_CMUSRST); - cmusrst |= val; - vrc4173_outw(cmusrst, VRC4173_CMUSRST); -} - -static inline void clear_cmusrst(uint16_t val) -{ - uint16_t cmusrst; - - cmusrst = vrc4173_inw(VRC4173_CMUSRST); - cmusrst &= ~val; - vrc4173_outw(cmusrst, VRC4173_CMUSRST); -} - -void vrc4173_supply_clock(vrc4173_clock_t clock) -{ - if (vrc4173_initialized) { - spin_lock_irq(&vrc4173_cmu_lock); - - switch (clock) { - case VRC4173_PIU_CLOCK: - vrc4173_cmuclkmsk |= MSKPIU; - break; - case VRC4173_KIU_CLOCK: - vrc4173_cmuclkmsk |= MSKKIU; - break; - case VRC4173_AIU_CLOCK: - vrc4173_cmuclkmsk |= MSKAIU; - break; - case VRC4173_PS2_CH1_CLOCK: - vrc4173_cmuclkmsk |= MSKPS2CH1; - break; - case VRC4173_PS2_CH2_CLOCK: - vrc4173_cmuclkmsk |= MSKPS2CH2; - break; - case VRC4173_USBU_PCI_CLOCK: - set_cmusrst(USBRST); - vrc4173_cmuclkmsk |= MSKUSB; - break; - case VRC4173_CARDU1_PCI_CLOCK: - set_cmusrst(CARD1RST); - vrc4173_cmuclkmsk |= MSKCARD1; - break; - case VRC4173_CARDU2_PCI_CLOCK: - set_cmusrst(CARD2RST); - vrc4173_cmuclkmsk |= MSKCARD2; - break; - case VRC4173_AC97U_PCI_CLOCK: - set_cmusrst(AC97RST); - vrc4173_cmuclkmsk |= MSKAC97; - break; - case VRC4173_USBU_48MHz_CLOCK: - set_cmusrst(USBRST); - vrc4173_cmuclkmsk |= MSK48MUSB; - break; - case VRC4173_EXT_48MHz_CLOCK: - if (vrc4173_cmuclkmsk & MSK48MOSC) - vrc4173_cmuclkmsk |= MSK48MPIN; - else - printk(KERN_WARNING - "vrc4173_supply_clock: " - "Please supply VRC4173_48MHz_CLOCK first " - "rather than VRC4173_EXT_48MHz_CLOCK.\n"); - break; - case VRC4173_48MHz_CLOCK: - vrc4173_cmuclkmsk |= MSK48MOSC; - break; - default: - printk(KERN_WARNING - "vrc4173_supply_clock: Invalid CLOCK value %u\n", clock); - break; - } - - vrc4173_outw(vrc4173_cmuclkmsk, VRC4173_CMUCLKMSK); - - switch (clock) { - case VRC4173_USBU_PCI_CLOCK: - case VRC4173_USBU_48MHz_CLOCK: - clear_cmusrst(USBRST); - break; - case VRC4173_CARDU1_PCI_CLOCK: - clear_cmusrst(CARD1RST); - break; - case VRC4173_CARDU2_PCI_CLOCK: - clear_cmusrst(CARD2RST); - break; - case VRC4173_AC97U_PCI_CLOCK: - clear_cmusrst(AC97RST); - break; - default: - break; - } - - spin_unlock_irq(&vrc4173_cmu_lock); - } -} - -EXPORT_SYMBOL(vrc4173_supply_clock); - -void vrc4173_mask_clock(vrc4173_clock_t clock) -{ - if (vrc4173_initialized) { - spin_lock_irq(&vrc4173_cmu_lock); - - switch (clock) { - case VRC4173_PIU_CLOCK: - vrc4173_cmuclkmsk &= ~MSKPIU; - break; - case VRC4173_KIU_CLOCK: - vrc4173_cmuclkmsk &= ~MSKKIU; - break; - case VRC4173_AIU_CLOCK: - vrc4173_cmuclkmsk &= ~MSKAIU; - break; - case VRC4173_PS2_CH1_CLOCK: - vrc4173_cmuclkmsk &= ~MSKPS2CH1; - break; - case VRC4173_PS2_CH2_CLOCK: - vrc4173_cmuclkmsk &= ~MSKPS2CH2; - break; - case VRC4173_USBU_PCI_CLOCK: - set_cmusrst(USBRST); - vrc4173_cmuclkmsk &= ~MSKUSB; - break; - case VRC4173_CARDU1_PCI_CLOCK: - set_cmusrst(CARD1RST); - vrc4173_cmuclkmsk &= ~MSKCARD1; - break; - case VRC4173_CARDU2_PCI_CLOCK: - set_cmusrst(CARD2RST); - vrc4173_cmuclkmsk &= ~MSKCARD2; - break; - case VRC4173_AC97U_PCI_CLOCK: - set_cmusrst(AC97RST); - vrc4173_cmuclkmsk &= ~MSKAC97; - break; - case VRC4173_USBU_48MHz_CLOCK: - set_cmusrst(USBRST); - vrc4173_cmuclkmsk &= ~MSK48MUSB; - break; - case VRC4173_EXT_48MHz_CLOCK: - vrc4173_cmuclkmsk &= ~MSK48MPIN; - break; - case VRC4173_48MHz_CLOCK: - vrc4173_cmuclkmsk &= ~MSK48MOSC; - break; - default: - printk(KERN_WARNING "vrc4173_mask_clock: Invalid CLOCK value %u\n", clock); - break; - } - - vrc4173_outw(vrc4173_cmuclkmsk, VRC4173_CMUCLKMSK); - - switch (clock) { - case VRC4173_USBU_PCI_CLOCK: - case VRC4173_USBU_48MHz_CLOCK: - clear_cmusrst(USBRST); - break; - case VRC4173_CARDU1_PCI_CLOCK: - clear_cmusrst(CARD1RST); - break; - case VRC4173_CARDU2_PCI_CLOCK: - clear_cmusrst(CARD2RST); - break; - case VRC4173_AC97U_PCI_CLOCK: - clear_cmusrst(AC97RST); - break; - default: - break; - } - - spin_unlock_irq(&vrc4173_cmu_lock); - } -} - -EXPORT_SYMBOL(vrc4173_mask_clock); - -static inline void vrc4173_cmu_init(void) -{ - vrc4173_cmuclkmsk = vrc4173_inw(VRC4173_CMUCLKMSK); - - spin_lock_init(&vrc4173_cmu_lock); -} - -void vrc4173_select_function(vrc4173_function_t function) -{ - if (vrc4173_initialized) { - spin_lock_irq(&vrc4173_giu_lock); - - switch(function) { - case PS2_CHANNEL1: - vrc4173_selectreg |= SEL2; - break; - case PS2_CHANNEL2: - vrc4173_selectreg |= SEL1; - break; - case TOUCHPANEL: - vrc4173_selectreg &= SEL2 | SEL1 | SEL0; - break; - case KEYBOARD_8SCANLINES: - vrc4173_selectreg &= SEL3 | SEL2 | SEL1; - break; - case KEYBOARD_10SCANLINES: - vrc4173_selectreg &= SEL3 | SEL2; - break; - case KEYBOARD_12SCANLINES: - vrc4173_selectreg &= SEL3; - break; - case GPIO_0_15PINS: - vrc4173_selectreg |= SEL0; - break; - case GPIO_16_20PINS: - vrc4173_selectreg |= SEL3; - break; - } - - vrc4173_outw(vrc4173_selectreg, VRC4173_SELECTREG); - - spin_unlock_irq(&vrc4173_giu_lock); - } -} - -EXPORT_SYMBOL(vrc4173_select_function); - -static inline void vrc4173_giu_init(void) -{ - vrc4173_selectreg = vrc4173_inw(VRC4173_SELECTREG); - - spin_lock_init(&vrc4173_giu_lock); -} - -void vrc4173_enable_piuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_PIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MPIUINTREG); - val |= mask; - vrc4173_outw(val, VRC4173_MPIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_enable_piuint); - -void vrc4173_disable_piuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_PIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MPIUINTREG); - val &= ~mask; - vrc4173_outw(val, VRC4173_MPIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_disable_piuint); - -void vrc4173_enable_aiuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_AIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MAIUINTREG); - val |= mask; - vrc4173_outw(val, VRC4173_MAIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_enable_aiuint); - -void vrc4173_disable_aiuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_AIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MAIUINTREG); - val &= ~mask; - vrc4173_outw(val, VRC4173_MAIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_disable_aiuint); - -void vrc4173_enable_kiuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_KIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MKIUINTREG); - val |= mask; - vrc4173_outw(val, VRC4173_MKIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_enable_kiuint); - -void vrc4173_disable_kiuint(uint16_t mask) -{ - struct irq_desc *desc = irq_desc + VRC4173_KIU_IRQ; - unsigned long flags; - uint16_t val; - - spin_lock_irqsave(&desc->lock, flags); - val = vrc4173_inw(VRC4173_MKIUINTREG); - val &= ~mask; - vrc4173_outw(val, VRC4173_MKIUINTREG); - spin_unlock_irqrestore(&desc->lock, flags); -} - -EXPORT_SYMBOL(vrc4173_disable_kiuint); - -static void enable_vrc4173_irq(unsigned int irq) -{ - uint16_t val; - - val = vrc4173_inw(VRC4173_MSYSINT1REG); - val |= (uint16_t)1 << (irq - VRC4173_IRQ_BASE); - vrc4173_outw(val, VRC4173_MSYSINT1REG); -} - -static void disable_vrc4173_irq(unsigned int irq) -{ - uint16_t val; - - val = vrc4173_inw(VRC4173_MSYSINT1REG); - val &= ~((uint16_t)1 << (irq - VRC4173_IRQ_BASE)); - vrc4173_outw(val, VRC4173_MSYSINT1REG); -} - -static unsigned int startup_vrc4173_irq(unsigned int irq) -{ - enable_vrc4173_irq(irq); - return 0; /* never anything pending */ -} - -#define shutdown_vrc4173_irq disable_vrc4173_irq -#define ack_vrc4173_irq disable_vrc4173_irq - -static void end_vrc4173_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - enable_vrc4173_irq(irq); -} - -static struct irq_chip vrc4173_irq_type = { - .typename = "VRC4173", - .startup = startup_vrc4173_irq, - .shutdown = shutdown_vrc4173_irq, - .enable = enable_vrc4173_irq, - .disable = disable_vrc4173_irq, - .ack = ack_vrc4173_irq, - .end = end_vrc4173_irq, -}; - -static int vrc4173_get_irq_number(int irq) -{ - uint16_t status, mask; - int i; - - status = vrc4173_inw(VRC4173_SYSINT1REG); - mask = vrc4173_inw(VRC4173_MSYSINT1REG); - - status &= mask; - if (status) { - for (i = 0; i < 16; i++) - if (status & (0x0001 << i)) - return VRC4173_IRQ(i); - } - - return -EINVAL; -} - -static inline int vrc4173_icu_init(int cascade_irq) -{ - int i; - - if (cascade_irq < GIU_IRQ(0) || cascade_irq > GIU_IRQ(15)) - return -EINVAL; - - vrc4173_outw(0, VRC4173_MSYSINT1REG); - - vr41xx_set_irq_trigger(GIU_IRQ_TO_PIN(cascade_irq), TRIGGER_LEVEL, SIGNAL_THROUGH); - vr41xx_set_irq_level(GIU_IRQ_TO_PIN(cascade_irq), LEVEL_LOW); - - for (i = VRC4173_IRQ_BASE; i <= VRC4173_IRQ_LAST; i++) - irq_desc[i].chip = &vrc4173_irq_type; - - return 0; -} - -static int __devinit vrc4173_probe(struct pci_dev *dev, - const struct pci_device_id *id) -{ - unsigned long start, flags; - int err; - - err = pci_enable_device(dev); - if (err < 0) { - printk(KERN_ERR "vrc4173: Failed to enable PCI device, aborting\n"); - return err; - } - - pci_set_master(dev); - - start = pci_resource_start(dev, 0); - if (start == 0) { - printk(KERN_ERR "vrc4173:No such PCI I/O resource, aborting\n"); - return -ENXIO; - } - - flags = pci_resource_flags(dev, 0); - if ((flags & IORESOURCE_IO) == 0) { - printk(KERN_ERR "vrc4173: No such PCI I/O resource, aborting\n"); - return -ENXIO; - } - - err = pci_request_regions(dev, "NEC VRC4173"); - if (err < 0) { - printk(KERN_ERR "vrc4173: PCI resources are busy, aborting\n"); - return err; - } - - set_vrc4173_io_offset(start); - - vrc4173_cmu_init(); - vrc4173_giu_init(); - - err = vrc4173_icu_init(dev->irq); - if (err < 0) { - printk(KERN_ERR "vrc4173: Invalid IRQ %d, aborting\n", dev->irq); - return err; - } - - err = vr41xx_cascade_irq(dev->irq, vrc4173_get_irq_number); - if (err < 0) { - printk(KERN_ERR "vrc4173: IRQ resource %d is busy, aborting\n", dev->irq); - return err; - } - - printk(KERN_INFO - "NEC VRC4173 at 0x%#08lx, IRQ is cascaded to %d\n", start, dev->irq); - - return 0; -} - -static void vrc4173_remove(struct pci_dev *dev) -{ - free_irq(dev->irq, NULL); - - pci_release_regions(dev); -} - -static struct pci_driver vrc4173_driver = { - .name = "NEC VRC4173", - .probe = vrc4173_probe, - .remove = vrc4173_remove, - .id_table = vrc4173_id_table, -}; - -static int __devinit vrc4173_init(void) -{ - int err; - - err = pci_register_driver(&vrc4173_driver); - if (err < 0) - return err; - - vrc4173_initialized = 1; - - return 0; -} - -static void __devexit vrc4173_exit(void) -{ - vrc4173_initialized = 0; - - pci_unregister_driver(&vrc4173_driver); -} - -module_init(vrc4173_init); -module_exit(vrc4173_exit); |