[PATCH 0/3] ARM: OMAP2+: gpmc warning fixes

[Tony Lindgren]

* Balaji T K <balajitk at ti.com> [110317 08:54]:
> Applies on omap-for-linus branch
> Boot tested on OMAP4430 SDP and OMAP3630SDP
> 
> Balaji T K (3):
>   ARM: OMAP2+: correct GPMC IRQ
>   ARM: OMAP2+: GPMC set dummy irq chip
>   ARM: OMAP4: correct GPMC IRQ number
> 
>  arch/arm/mach-omap2/gpmc.c             |   13 ++++++++-----
>  arch/arm/plat-omap/include/plat/irqs.h |    2 +-
>  2 files changed, 9 insertions(+), 6 deletions(-)

Thanks, I've squashed these into one patch and updated
the comments. Will apply into fixes, updated patch below.

Regards,

Tony 

From: Balaji T K <balajitk at ti.com>
Date: Fri, 18 Mar 2011 16:22:39 -0700
Subject: [PATCH] ARM: OMAP2+: Fix warnings for GPMC interrupt

Commit db97eb7dfe13f6c04f0a0e77c32e2691f563ab8b
(omap: gpmc: enable irq mode in gpmc) enabled interrupts for
GPMC (General Purpose Memory Controller). However, looks like
this patch only works on omap3. Fix the issues to avoid warnings
on omap4 during the boot.

GPMC: number of chip select is 8, CS0 to CS7. One less IRQ
allocated throws below warning at boot:

[    0.429290] Trying to install type control for IRQ409
[    0.429290] Trying to set irq flags for IRQ409

Resolve following warning messages in boot when irq chip is not set:

[    0.429229] Trying to install interrupt handler for IRQ402
[    0.429229] Trying to install interrupt handler for IRQ403
[    0.429229] Trying to install interrupt handler for IRQ404
[    0.429260] Trying to install interrupt handler for IRQ405
[    0.429260] Trying to install interrupt handler for IRQ406
[    0.429260] Trying to install interrupt handler for IRQ407
[    0.429290] Trying to install interrupt handler for IRQ408

Resolve following warning in OMAP4:
[    0.429290] gpmc: irq-20 could not claim: err -22

Signed-off-by: Balaji T K <balajitk at ti.com>
[tony at atomide.com: combined patches into one, updated comments]
Signed-off-by: Tony Lindgren <tony at atomide.com>

diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 6741743..493505c 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -693,6 +693,7 @@ static int __init gpmc_init(void)
 {
 	u32 l, irq;
 	int cs, ret = -EINVAL;
+	int gpmc_irq;
 	char *ck = NULL;
 
 	if (cpu_is_omap24xx()) {
@@ -701,12 +702,15 @@ static int __init gpmc_init(void)
 			l = OMAP2420_GPMC_BASE;
 		else
 			l = OMAP34XX_GPMC_BASE;
+		gpmc_irq = INT_34XX_GPMC_IRQ;
 	} else if (cpu_is_omap34xx()) {
 		ck = "gpmc_fck";
 		l = OMAP34XX_GPMC_BASE;
+		gpmc_irq = INT_34XX_GPMC_IRQ;
 	} else if (cpu_is_omap44xx()) {
 		ck = "gpmc_ck";
 		l = OMAP44XX_GPMC_BASE;
+		gpmc_irq = OMAP44XX_IRQ_GPMC;
 	}
 
 	if (WARN_ON(!ck))
@@ -739,16 +743,17 @@ static int __init gpmc_init(void)
 	/* initalize the irq_chained */
 	irq = OMAP_GPMC_IRQ_BASE;
 	for (cs = 0; cs < GPMC_CS_NUM; cs++) {
-		set_irq_handler(irq, handle_simple_irq);
+		set_irq_chip_and_handler(irq, &dummy_irq_chip,
+						handle_simple_irq);
 		set_irq_flags(irq, IRQF_VALID);
 		irq++;
 	}
 
-	ret = request_irq(INT_34XX_GPMC_IRQ,
+	ret = request_irq(gpmc_irq,
 			gpmc_handle_irq, IRQF_SHARED, "gpmc", gpmc_base);
 	if (ret)
 		pr_err("gpmc: irq-%d could not claim: err %d\n",
-						INT_34XX_GPMC_IRQ, ret);
+						gpmc_irq, ret);
 	return ret;
 }
 postcore_initcall(gpmc_init);
@@ -757,8 +762,6 @@ static irqreturn_t gpmc_handle_irq(int irq, void *dev)
 {
 	u8 cs;
 
-	if (irq != INT_34XX_GPMC_IRQ)
-		return IRQ_HANDLED;
 	/* check cs to invoke the irq */
 	cs = ((gpmc_read_reg(GPMC_PREFETCH_CONFIG1)) >> CS_NUM_SHIFT) & 0x7;
 	if (OMAP_GPMC_IRQ_BASE+cs <= OMAP_GPMC_IRQ_END)
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index d779283..5a25098 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -416,7 +416,7 @@
 
 /* GPMC related */
 #define OMAP_GPMC_IRQ_BASE	(TWL_IRQ_END)
-#define OMAP_GPMC_NR_IRQS	7
+#define OMAP_GPMC_NR_IRQS	8
 #define OMAP_GPMC_IRQ_END	(OMAP_GPMC_IRQ_BASE + OMAP_GPMC_NR_IRQS)