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mfd: ab8500: Pass AB8500 IRQ to debugfs code by resource

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The AB8500 debug code which was merged in parallell with the
multiplatform work incidentally introduced a new instance using
the <mach/irqs.h> header which is now deleted, causing this
build regression:

drivers/mfd/ab8500-debugfs.c:95:23:
fatal error: mach/irqs.h: No such file or directory
compilation terminated.
make[4]: *** [drivers/mfd/ab8500-debugfs.o] Error 1

The code most certainly never worked with device tree either
since that does not rely on this kind of hard-coded interrupt
numbers.

Fix the problem at the root by passing it as a named resource
from the ab8500-core driver. Use an untyped resource to
stop the MFD core from remapping this IRQ relative to the
AB8500 irqdomain.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Linus Walleij 2013-04-12 17:02:09 +02:00 committed by Samuel Ortiz
parent 33a0d1907f
commit 6999181eec
2 changed files with 27 additions and 4 deletions
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15
drivers/mfd/ab8500-core.c
View file

@ -867,6 +867,15 @@ static struct resource ab8500_chargalg_resources[] = {};
#ifdef CONFIG_DEBUG_FS
static struct resource ab8500_debug_resources[] = {
{
.name = "IRQ_AB8500",
/*
* Number will be filled in. NOTE: this is deliberately
* not flagged as an IRQ in ordet to avoid remapping using
* the irqdomain in the MFD core, so that this IRQ passes
* unremapped to the debug code.
*/
},
{
.name = "IRQ_FIRST",
.start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
@ -1712,6 +1721,12 @@ static int ab8500_probe(struct platform_device *pdev)
if (ret)
return ret;
#if CONFIG_DEBUG_FS
/* Pass to debugfs */
ab8500_debug_resources[0].start = ab8500->irq;
ab8500_debug_resources[0].end = ab8500->irq;
#endif
if (is_ab9540(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
ARRAY_SIZE(ab9540_devs), NULL,

16
drivers/mfd/ab8500-debugfs.c
View file

@ -91,12 +91,10 @@
#include <linux/ctype.h>
#endif
/* TODO: this file should not reference IRQ_DB8500_AB8500! */
#include <mach/irqs.h>
static u32 debug_bank;
static u32 debug_address;
static int irq_ab8500;
static int irq_first;
static int irq_last;
static u32 *irq_count;
@ -1589,7 +1587,7 @@ void ab8500_debug_register_interrupt(int line)
{
if (line < num_interrupt_lines) {
num_interrupts[line]++;
if (suspend_test_wake_cause_interrupt_is_mine(IRQ_DB8500_AB8500))
if (suspend_test_wake_cause_interrupt_is_mine(irq_ab8500))
num_wake_interrupts[line]++;
}
}
@ -2941,6 +2939,7 @@ static int ab8500_debug_probe(struct platform_device *plf)
struct dentry *file;
int ret = -ENOMEM;
struct ab8500 *ab8500;
struct resource *res;
debug_bank = AB8500_MISC;
debug_address = AB8500_REV_REG & 0x00FF;
@ -2959,6 +2958,15 @@ static int ab8500_debug_probe(struct platform_device *plf)
if (!event_name)
goto out_freedev_attr;
res = platform_get_resource_byname(plf, 0, "IRQ_AB8500");
if (!res) {
dev_err(&plf->dev, "AB8500 irq not found, err %d\n",
irq_first);
ret = -ENXIO;
goto out_freeevent_name;
}
irq_ab8500 = res->start;
irq_first = platform_get_irq_byname(plf, "IRQ_FIRST");
if (irq_first < 0) {
dev_err(&plf->dev, "First irq not found, err %d\n",