diff options
Diffstat (limited to 'arch/arm/mach-msm/sirc.c')
| -rw-r--r-- | arch/arm/mach-msm/sirc.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/arch/arm/mach-msm/sirc.c b/arch/arm/mach-msm/sirc.c deleted file mode 100644 index 689e78c95f38..000000000000 --- a/arch/arm/mach-msm/sirc.c +++ /dev/null @@ -1,172 +0,0 @@ -/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * 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., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ - -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <asm/irq.h> - -static unsigned int int_enable; -static unsigned int wake_enable; - -static struct sirc_regs_t sirc_regs = { - .int_enable = SPSS_SIRC_INT_ENABLE, - .int_enable_clear = SPSS_SIRC_INT_ENABLE_CLEAR, - .int_enable_set = SPSS_SIRC_INT_ENABLE_SET, - .int_type = SPSS_SIRC_INT_TYPE, - .int_polarity = SPSS_SIRC_INT_POLARITY, - .int_clear = SPSS_SIRC_INT_CLEAR, -}; - -static struct sirc_cascade_regs sirc_reg_table[] = { - { - .int_status = SPSS_SIRC_IRQ_STATUS, - .cascade_irq = INT_SIRC_0, - } -}; - -/* Mask off the given interrupt. Keep the int_enable mask in sync with - the enable reg, so it can be restored after power collapse. */ -static void sirc_irq_mask(struct irq_data *d) -{ - unsigned int mask; - - mask = 1 << (d->irq - FIRST_SIRC_IRQ); - writel(mask, sirc_regs.int_enable_clear); - int_enable &= ~mask; - return; -} - -/* Unmask the given interrupt. Keep the int_enable mask in sync with - the enable reg, so it can be restored after power collapse. */ -static void sirc_irq_unmask(struct irq_data *d) -{ - unsigned int mask; - - mask = 1 << (d->irq - FIRST_SIRC_IRQ); - writel(mask, sirc_regs.int_enable_set); - int_enable |= mask; - return; -} - -static void sirc_irq_ack(struct irq_data *d) -{ - unsigned int mask; - - mask = 1 << (d->irq - FIRST_SIRC_IRQ); - writel(mask, sirc_regs.int_clear); - return; -} - -static int sirc_irq_set_wake(struct irq_data *d, unsigned int on) -{ - unsigned int mask; - - /* Used to set the interrupt enable mask during power collapse. */ - mask = 1 << (d->irq - FIRST_SIRC_IRQ); - if (on) - wake_enable |= mask; - else - wake_enable &= ~mask; - - return 0; -} - -static int sirc_irq_set_type(struct irq_data *d, unsigned int flow_type) -{ - unsigned int mask; - unsigned int val; - - mask = 1 << (d->irq - FIRST_SIRC_IRQ); - val = readl(sirc_regs.int_polarity); - - if (flow_type & (IRQF_TRIGGER_LOW | IRQF_TRIGGER_FALLING)) - val |= mask; - else - val &= ~mask; - - writel(val, sirc_regs.int_polarity); - - val = readl(sirc_regs.int_type); - if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { - val |= mask; - __irq_set_handler_locked(d->irq, handle_edge_irq); - } else { - val &= ~mask; - __irq_set_handler_locked(d->irq, handle_level_irq); - } - - writel(val, sirc_regs.int_type); - - return 0; -} - -/* Finds the pending interrupt on the passed cascade irq and redrives it */ -static void sirc_irq_handler(unsigned int irq, struct irq_desc *desc) -{ - unsigned int reg = 0; - unsigned int sirq; - unsigned int status; - - while ((reg < ARRAY_SIZE(sirc_reg_table)) && - (sirc_reg_table[reg].cascade_irq != irq)) - reg++; - - status = readl(sirc_reg_table[reg].int_status); - status &= SIRC_MASK; - if (status == 0) - return; - - for (sirq = 0; - (sirq < NR_SIRC_IRQS) && ((status & (1U << sirq)) == 0); - sirq++) - ; - generic_handle_irq(sirq+FIRST_SIRC_IRQ); - - desc->irq_data.chip->irq_ack(&desc->irq_data); -} - -static struct irq_chip sirc_irq_chip = { - .name = "sirc", - .irq_ack = sirc_irq_ack, - .irq_mask = sirc_irq_mask, - .irq_unmask = sirc_irq_unmask, - .irq_set_wake = sirc_irq_set_wake, - .irq_set_type = sirc_irq_set_type, -}; - -void __init msm_init_sirc(void) -{ - int i; - - int_enable = 0; - wake_enable = 0; - - for (i = FIRST_SIRC_IRQ; i < LAST_SIRC_IRQ; i++) { - irq_set_chip_and_handler(i, &sirc_irq_chip, handle_edge_irq); - set_irq_flags(i, IRQF_VALID); - } - - for (i = 0; i < ARRAY_SIZE(sirc_reg_table); i++) { - irq_set_chained_handler(sirc_reg_table[i].cascade_irq, - sirc_irq_handler); - irq_set_irq_wake(sirc_reg_table[i].cascade_irq, 1); - } - return; -} - |