summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-msm/sirc.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-msm/sirc.c')
-rw-r--r--arch/arm/mach-msm/sirc.c172
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;
-}
-