linux-kernel - Fwd: [PATCH] [libata] Add irq_flags to struct pata_platform

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Date:	Mon, 18 Jun 2007 10:55:21 +0800
From:	"Sonic Zhang" <sonic.adi@...il.com>
To:	"Linux Kernel" <linux-kernel@...r.kernel.org>,
	"Linux IDE" <linux-ide@...r.kernel.org>
Subject: Fwd: [PATCH] [libata] Add irq_flags to struct pata_platform_info

Any comments for this patch?

Thank you.

Sonic Zhang

---------- Forwarded message ----------
From: Sonic Zhang <sonic.adi@...il.com>
Date: Jun 15, 2007 5:45 PM
Subject: [PATCH] [libata] Add irq_flags to struct pata_platform_info
To: Linux IDE <linux-ide@...r.kernel.org>
Cc: Jeff Garzik <jeff@...zik.org>


On some embedded platforms, such as blackfin, the gpio interrupt for
IDE interface is designed to be triggered with high voltage. The gpio
port should be configured properly by set_irq_type() when register
the irq. This patch enable the generic pata platform driver to
accept platform irq flags data.

Signed-off-by: Sonic Zhang <sonic.adi@...il.com>
---
 drivers/ata/pata_platform.c   |    6 ++++--
 include/linux/pata_platform.h |    5 +++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index cbb7866..79f841b 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -139,6 +139,7 @@ static int __devinit pata_platform_probe(struct
platform_device *pdev)
        struct resource *io_res, *ctl_res;
        struct ata_host *host;
        struct ata_port *ap;
+       struct pata_platform_info *pp_info;
        unsigned int mmio;

        /*
@@ -208,11 +209,12 @@ static int __devinit pata_platform_probe(struct
platform_device *pdev)

        ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;

-       pata_platform_setup_port(&ap->ioaddr, pdev->dev.platform_data);
+       pp_info = (struct pata_platform_info *)(pdev->dev.platform_data);
+       pata_platform_setup_port(&ap->ioaddr, pp_info);

        /* activate */
        return ata_host_activate(host, platform_get_irq(pdev, 0), ata_interrupt,
-                                0, &pata_platform_sht);
+                                pp_info->irq_flags, &pata_platform_sht);
 }

 /**
diff --git a/include/linux/pata_platform.h b/include/linux/pata_platform.h
index 2d5fd64..5799e8d 100644
--- a/include/linux/pata_platform.h
+++ b/include/linux/pata_platform.h
@@ -8,6 +8,11 @@ struct pata_platform_info {
         * spacing used by ata_std_ports().
         */
        unsigned int ioport_shift;
+       /*
+        * Indicate platform specific irq types and initial
+        * IRQ flags when call request_irq()
+        */
+       unsigned int irq_flags;
 };

 #endif /* __LINUX_PATA_PLATFORM_H */
--
1.5.1.3


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