From: Kumar Gala <galak@linen.sps.mot.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@osdl.org, rmk@arm.linux.org.uk, greg@kroah.com
Subject: [RFC][PATCH] Add platform_get_resource_byname & platform_get_resource_byirq
Date: Wed, 8 Dec 2004 17:16:16 -0600 (CST) [thread overview]
Message-ID: <Pine.LNX.4.61.0412081703030.4040@linen.sps.mot.com> (raw)
Adds the ability to find a resource or irq on a platform device by its
resource name. This patch also tweaks how resource names get set.
Before, resources names were set to pdev->dev.bus_id, now that only
happens if the resource name has not been previous set.
All of this allows us to find a resource without assuming what order the
resources are in.
Signed-off-by; Kumar Gala <kumar.gala@freescale.com>
--
diff -Nru a/drivers/base/platform.c b/drivers/base/platform.c
--- a/drivers/base/platform.c 2004-12-08 16:59:52 -06:00
+++ b/drivers/base/platform.c 2004-12-08 16:59:52 -06:00
@@ -58,6 +58,42 @@
}
/**
+ * platform_get_resource_byname - get a resource for a device by name
+ * @dev: platform device
+ * @type: resource type
+ * @name: resource name
+ */
+struct resource *
+platform_get_resource_byname(struct platform_device *dev, unsigned int type,
+ char * name)
+{
+ int i;
+
+ for (i = 0; i < dev->num_resources; i++) {
+ struct resource *r = &dev->resource[i];
+
+ if ((r->flags & (IORESOURCE_IO|IORESOURCE_MEM|
+ IORESOURCE_IRQ|IORESOURCE_DMA))
+ == type)
+ if (!strcmp(r->name, name))
+ return r;
+ }
+ return NULL;
+}
+
+/**
+ * platform_get_irq - get an IRQ for a device
+ * @dev: platform device
+ * @name: IRQ name
+ */
+int platform_get_irq_byname(struct platform_device *dev, char * name)
+{
+ struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);
+
+ return r ? r->start : 0;
+}
+
+/**
* platform_add_devices - add a numbers of platform devices
* @devs: array of platform devices to add
* @num: number of platform devices in array
@@ -103,7 +139,8 @@
for (i = 0; i < pdev->num_resources; i++) {
struct resource *p, *r = &pdev->resource[i];
- r->name = pdev->dev.bus_id;
+ if (r->name == NULL)
+ r->name = pdev->dev.bus_id;
p = NULL;
if (r->flags & IORESOURCE_MEM)
@@ -308,3 +345,5 @@
EXPORT_SYMBOL_GPL(platform_device_unregister);
EXPORT_SYMBOL_GPL(platform_get_irq);
EXPORT_SYMBOL_GPL(platform_get_resource);
+EXPORT_SYMBOL_GPL(platform_get_irq_byname);
+EXPORT_SYMBOL_GPL(platform_get_resource_byname);
diff -Nru a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/include/linux/fsl_devices.h 2004-12-08 16:59:52 -06:00
@@ -0,0 +1,49 @@
+/*
+ * include/linux/fsl_devices.h
+ *
+ * Definitions for any platform device related flags or structures for
+ * Freescale processor devices
+ *
+ * Maintainer: Kumar Gala (kumar.gala@freescale.com)
+ *
+ * Copyright 2004 Freescale Semiconductor, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifdef __KERNEL__
+#ifndef _FSL_DEVICE_H_
+#define _FSL_DEVICE_H_
+
+/* A table of information for supporting the Gianfar Ethernet Controller
+ * This helps identify which enet controller we are dealing with,
+ * and what type of enet controller it is
+ */
+struct gianfar_platform_data {
+ u32 flags;
+ u32 phyid;
+ uint interruptPHY;
+ uint phyregidx;
+ char * phydevice;
+ unsigned char mac_addr[6];
+};
+
+/* Flags related to gianfar device features */
+#define GIANFAR_HAS_GIGABIT 0x00000001
+#define GIANFAR_HAS_COALESCE 0x00000002
+#define GIANFAR_HAS_RMON 0x00000004
+#define GIANFAR_HAS_MULTI_INTR 0x00000008
+
+/* Flags in gianfar_platform_data */
+#define GIANFAR_PDATA_FIRM_SET_MACADDR 0x00000001
+#define GIANFAR_PDATA_HAS_PHY_INTR 0x00000002 /* if not set use a timer */
+
+/* Flags related to I2C device features */
+#define FSL_I2C_SEPARATE_DFSRR 0x00000001
+#define FSL_I2C_CLOCK_5200 0x00000002
+
+#endif /* _FSL_DEVICE_H_ */
+#endif /* __KERNEL__ */
next reply other threads:[~2004-12-08 23:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 23:16 Kumar Gala [this message]
2004-12-08 23:26 ` [PATCH] Add prototypes for platform_get_resource_byname & platform_get_resource_byirq Kumar Gala
2004-12-09 0:03 ` [RFC][PATCH] Add " Kumar Gala
2004-12-17 22:11 ` Greg KH
2005-01-04 15:53 ` Kumar Gala
2005-01-11 1:19 ` Greg KH
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