From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/9] ARM i.MX 3ds debugboard: allocate irqs dynamically
Date: Fri, 20 May 2011 09:59:22 +0200 [thread overview]
Message-ID: <1305878365-827-8-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1305878365-827-1-git-send-email-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/plat-mxc/3ds_debugboard.c | 53 ++++++++++++++++++++---------------
1 files changed, 30 insertions(+), 23 deletions(-)
diff --git a/arch/arm/plat-mxc/3ds_debugboard.c b/arch/arm/plat-mxc/3ds_debugboard.c
index f0ba072..e644cd9 100644
--- a/arch/arm/plat-mxc/3ds_debugboard.c
+++ b/arch/arm/plat-mxc/3ds_debugboard.c
@@ -46,18 +46,14 @@
/* CPU ID and Personality ID */
#define MCU_BOARD_ID_REG 0x68
-#define MXC_IRQ_TO_EXPIO(irq) ((irq) - MXC_BOARD_IRQ_START)
-#define MXC_IRQ_TO_GPIO(irq) ((irq) - MXC_INTERNAL_IRQS)
-
-#define MXC_EXP_IO_BASE (MXC_BOARD_IRQ_START)
#define MXC_MAX_EXP_IO_LINES 16
/* interrupts like external uart , external ethernet etc*/
-#define EXPIO_INT_ENET (MXC_BOARD_IRQ_START + 0)
-#define EXPIO_INT_XUART_A (MXC_BOARD_IRQ_START + 1)
-#define EXPIO_INT_XUART_B (MXC_BOARD_IRQ_START + 2)
-#define EXPIO_INT_BUTTON_A (MXC_BOARD_IRQ_START + 3)
-#define EXPIO_INT_BUTTON_B (MXC_BOARD_IRQ_START + 4)
+#define EXPIO_INT_ENET 0
+#define EXPIO_INT_XUART_A 1
+#define EXPIO_INT_XUART_B 2
+#define EXPIO_INT_BUTTON_A 3
+#define EXPIO_INT_BUTTON_B 4
static void __iomem *brd_io;
@@ -65,8 +61,6 @@ static struct resource smsc911x_resources[] = {
{
.flags = IORESOURCE_MEM,
} , {
- .start = EXPIO_INT_ENET,
- .end = EXPIO_INT_ENET,
.flags = IORESOURCE_IRQ,
},
};
@@ -86,6 +80,8 @@ static struct platform_device smsc_lan9217_device = {
.resource = smsc911x_resources,
};
+static int mxc_expio_base_irq;
+
static void mxc_expio_irq_handler(u32 irq, struct irq_desc *desc)
{
u32 imr_val;
@@ -98,7 +94,7 @@ static void mxc_expio_irq_handler(u32 irq, struct irq_desc *desc)
imr_val = __raw_readw(brd_io + INTR_MASK_REG);
int_valid = __raw_readw(brd_io + INTR_STATUS_REG) & ~imr_val;
- expio_irq = MXC_BOARD_IRQ_START;
+ expio_irq = mxc_expio_base_irq;
for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
if ((int_valid & 1) == 0)
continue;
@@ -116,7 +112,7 @@ static void mxc_expio_irq_handler(u32 irq, struct irq_desc *desc)
static void expio_mask_irq(struct irq_data *d)
{
u16 reg;
- u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
+ u32 expio = d->irq - mxc_expio_base_irq;
reg = __raw_readw(brd_io + INTR_MASK_REG);
reg |= (1 << expio);
@@ -125,7 +121,7 @@ static void expio_mask_irq(struct irq_data *d)
static void expio_ack_irq(struct irq_data *d)
{
- u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
+ u32 expio = d->irq - mxc_expio_base_irq;
__raw_writew(1 << expio, brd_io + INTR_RESET_REG);
__raw_writew(0, brd_io + INTR_RESET_REG);
@@ -135,7 +131,7 @@ static void expio_ack_irq(struct irq_data *d)
static void expio_unmask_irq(struct irq_data *d)
{
u16 reg;
- u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
+ u32 expio = d->irq - mxc_expio_base_irq;
reg = __raw_readw(brd_io + INTR_MASK_REG);
reg &= ~(1 << expio);
@@ -150,7 +146,7 @@ static struct irq_chip expio_irq_chip = {
int __init mxc_expio_init(u32 base, u32 p_irq)
{
- int i;
+ int ret, i;
brd_io = ioremap(BOARD_IO_ADDR(base), SZ_4K);
if (brd_io == NULL)
@@ -160,9 +156,8 @@ int __init mxc_expio_init(u32 base, u32 p_irq)
(__raw_readw(brd_io + MAGIC_NUMBER2_REG) != 0x5555) ||
(__raw_readw(brd_io + MAGIC_NUMBER3_REG) != 0xCAFE)) {
pr_info("3-Stack Debug board not detected\n");
- iounmap(brd_io);
- brd_io = NULL;
- return -ENODEV;
+ ret = -ENODEV;
+ goto out;
}
pr_info("3-Stack Debug board detected, rev = 0x%04X\n",
@@ -171,16 +166,23 @@ int __init mxc_expio_init(u32 base, u32 p_irq)
/*
* Configure INT line as GPIO input
*/
- gpio_request(MXC_IRQ_TO_GPIO(p_irq), "expio_pirq");
- gpio_direction_input(MXC_IRQ_TO_GPIO(p_irq));
+ gpio_request(irq_to_gpio(p_irq), "expio_pirq");
+ gpio_direction_input(irq_to_gpio(p_irq));
/* disable the interrupt and clear the status */
__raw_writew(0, brd_io + INTR_MASK_REG);
__raw_writew(0xFFFF, brd_io + INTR_RESET_REG);
__raw_writew(0, brd_io + INTR_RESET_REG);
__raw_writew(0x1F, brd_io + INTR_MASK_REG);
- for (i = MXC_EXP_IO_BASE;
- i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES); i++) {
+
+ mxc_expio_base_irq = irq_alloc_descs(-1, 0, MXC_MAX_EXP_IO_LINES, 0);
+ if (mxc_expio_base_irq < 0) {
+ ret = mxc_expio_base_irq;
+ goto out;
+ }
+
+ for (i = mxc_expio_base_irq;
+ i < mxc_expio_base_irq + MXC_MAX_EXP_IO_LINES; i++) {
irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq);
set_irq_flags(i, IRQF_VALID);
}
@@ -190,7 +192,12 @@ int __init mxc_expio_init(u32 base, u32 p_irq)
/* Register Lan device on the debugboard */
smsc911x_resources[0].start = LAN9217_BASE_ADDR(base);
smsc911x_resources[0].end = LAN9217_BASE_ADDR(base) + 0x100 - 1;
+ smsc911x_resources[1].start = mxc_expio_base_irq + EXPIO_INT_ENET;
+ smsc911x_resources[1].end = mxc_expio_base_irq + EXPIO_INT_ENET;
platform_device_register(&smsc_lan9217_device);
return 0;
+out:
+ iounmap(brd_io);
+ return ret;
}
--
1.7.4.1
next prev parent reply other threads:[~2011-05-20 7:59 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 7:59 i.MX: switch to sparse irqs Sascha Hauer
2011-05-20 7:59 ` [PATCH 1/9] ARM i.MX tzic: do not depend on MXC_INTERNAL_IRQS Sascha Hauer
2011-05-20 7:59 ` [PATCH] mfd wm8350: allocate irq descs dynamically Sascha Hauer
2011-05-20 12:52 ` Thomas Gleixner
2011-05-20 13:07 ` Sascha Hauer
2011-05-20 13:19 ` Thomas Gleixner
2011-05-21 11:29 ` Mark Brown
2011-05-23 6:25 ` Sascha Hauer
2011-05-23 10:44 ` Mark Brown
2011-05-23 14:41 ` Sascha Hauer
2011-05-23 15:22 ` Mark Brown
2011-05-23 16:46 ` Sascha Hauer
2011-05-23 22:41 ` Mark Brown
2011-05-24 7:28 ` Sascha Hauer
2011-05-24 9:46 ` Mark Brown
2011-05-24 11:52 ` Sascha Hauer
2011-05-24 15:35 ` Mark Brown
2011-05-25 8:13 ` Sascha Hauer
2011-05-25 9:23 ` Mark Brown
2011-05-25 19:10 ` Sascha Hauer
2011-05-20 7:59 ` [PATCH 2/9] ARM i.MX avic: do not depend on MXC_INTERNAL_IRQS Sascha Hauer
2011-05-20 7:59 ` [PATCH 3/9] ARM i.MX: get rid of wrong MXC_INTERNAL_IRQ usage Sascha Hauer
2011-05-20 7:59 ` [PATCH 4/9] mfd wm8350: allocate irq descs dynamically Sascha Hauer
2011-05-20 7:59 ` [PATCH 5/9] ARM i.MX mx31ads: allocate irqs for expio dynamically Sascha Hauer
2011-05-20 7:59 ` Sascha Hauer [this message]
2011-05-20 7:59 ` [PATCH 7/9] ARM i.MX: use sparse irqs Sascha Hauer
2011-05-20 7:59 ` [PATCH 8/9] dma IPU: rework irq handling Sascha Hauer
2011-05-20 13:16 ` Thomas Gleixner
2011-05-20 13:30 ` Sascha Hauer
2011-05-20 16:46 ` Thomas Gleixner
2011-05-20 22:11 ` Benjamin Herrenschmidt
2011-05-20 7:59 ` [PATCH 9/9] ARM i.MX3: remove now useless ipu platform data from boards Sascha Hauer
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