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Message-ID: <20081107120136.GD4013@axis.com>
Date: Fri, 7 Nov 2008 13:01:36 +0100
From: Jesper Nilsson <Jesper.Nilsson@...s.com>
To: Kay Sievers <kay.sievers@...y.org>
Cc: Greg KH <greg@...ah.com>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: chris: struct device - replace bus_id with dev_name(),
dev_set_name()
On Fri, Nov 07, 2008 at 01:38:40AM +0100, Kay Sievers wrote:
> This patch is part of a larger patch series which will remove
> the "char bus_id[20]" name string from struct device. The device
> name is managed in the kobject anyway, and without any size
> limitation, and just needlessly copied into "struct device".
Thanks, but I think that since this driver has been broken a long time
it is high time to fix it, and I think the fix removes the need for your patch.
Greg, could you please look this patch over?
[CRISv32] Fix IOP fw-loader to use platform_device.
Change IOP fw-loader to use platform_device instead of
raw device, which should be more correct usage.
Signed-off-by: Stefan Andersson <stefan.andersson@...s.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@...s.com>
---
iop_fw_load.c | 69 ++++++++++++++++++++++++----------------------------------
1 file changed, 29 insertions(+), 40 deletions(-)
diff --git a/arch/cris/arch-v32/drivers/iop_fw_load.c b/arch/cris/arch-v32/drivers/iop_fw_load.c
index 3b3857e..7376012 100644
--- a/arch/cris/arch-v32/drivers/iop_fw_load.c
+++ b/arch/cris/arch-v32/drivers/iop_fw_load.c
@@ -1,13 +1,14 @@
/*
* Firmware loader for ETRAX FS IO-Processor
*
- * Copyright (C) 2004 Axis Communications AB
+ * Copyright (C) 2004-2008 Axis Communications AB
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <hwregs/reg_rdwr.h>
@@ -20,16 +21,17 @@
#define IOP_TIMEOUT 100
-#error "This driver is broken with regard to its driver core usage."
-#error "Please contact <greg@...ah.com> for details on how to fix it properly."
+int iop_fw_load_spu(const unsigned char *fw_name, unsigned int spu_inst);
+int iop_fw_load_mpu(unsigned char *fw_name);
+int iop_start_mpu(unsigned int start_addr);
-static struct device iop_spu_device[2] = {
- { .bus_id = "iop-spu0", },
- { .bus_id = "iop-spu1", },
+static struct platform_device iop_spu_device[2] = {
+ { .name = "iop-spu0", },
+ { .name = "iop-spu1", },
};
-static struct device iop_mpu_device = {
- .bus_id = "iop-mpu",
+static struct platform_device iop_mpu_device = {
+ .name = "iop-mpu",
};
static int wait_mpu_idle(void)
@@ -61,7 +63,7 @@ int iop_fw_load_spu(const unsigned char *fw_name, unsigned int spu_inst)
.fsm = regk_iop_spu_no,
};
reg_iop_sw_cpu_r_mc_stat mc_stat;
- const struct firmware *fw_entry;
+ const struct firmware *fw_entry;
u32 *data;
unsigned int timeout;
int retval, i;
@@ -72,9 +74,8 @@ int iop_fw_load_spu(const unsigned char *fw_name, unsigned int spu_inst)
/* get firmware */
retval = request_firmware(&fw_entry,
fw_name,
- &iop_spu_device[spu_inst]);
- if (retval != 0)
- {
+ &iop_spu_device[spu_inst].dev);
+ if (retval != 0) {
printk(KERN_ERR
"iop_load_spu: Failed to load firmware \"%s\"\n",
fw_name);
@@ -121,29 +122,29 @@ int iop_fw_load_spu(const unsigned char *fw_name, unsigned int spu_inst)
/* release ownership of memory controller */
(void) REG_RD(iop_sw_cpu, regi_iop_sw_cpu, rs_mc_data);
- out:
+out:
release_firmware(fw_entry);
return retval;
}
+EXPORT_SYMBOL(iop_fw_load_spu);
int iop_fw_load_mpu(unsigned char *fw_name)
{
const unsigned int start_addr = 0;
reg_iop_mpu_rw_ctrl mpu_ctrl;
- const struct firmware *fw_entry;
+ const struct firmware *fw_entry;
u32 *data;
int retval, i;
/* get firmware */
- retval = request_firmware(&fw_entry, fw_name, &iop_mpu_device);
- if (retval != 0)
- {
+ retval = request_firmware(&fw_entry, fw_name, &iop_mpu_device.dev);
+ if (retval != 0) {
printk(KERN_ERR
"iop_load_spu: Failed to load firmware \"%s\"\n",
fw_name);
return retval;
}
- data = (u32 *) fw_entry->data;
+ data = (u32 *)fw_entry->data;
/* disable MPU */
mpu_ctrl.en = regk_iop_mpu_no;
@@ -161,10 +162,11 @@ int iop_fw_load_mpu(unsigned char *fw_name)
data++;
}
- out:
+out:
release_firmware(fw_entry);
return retval;
}
+EXPORT_SYMBOL(iop_fw_load_mpu);
int iop_start_mpu(unsigned int start_addr)
{
@@ -189,34 +191,24 @@ int iop_start_mpu(unsigned int start_addr)
goto out;
/* enable MPU */
REG_WR(iop_mpu, regi_iop_mpu, rw_ctrl, mpu_ctrl);
- out:
+out:
return retval;
}
+EXPORT_SYMBOL(iop_start_mpu);
static int __init iop_fw_load_init(void)
{
-#if 0
- /*
- * static struct devices can not be added directly to sysfs by ignoring
- * the driver model infrastructure. To fix this properly, please use
- * the platform_bus to register these devices to be able to properly
- * use the firmware infrastructure.
- */
- device_initialize(&iop_spu_device[0]);
- kobject_set_name(&iop_spu_device[0].kobj, "iop-spu0");
- kobject_add(&iop_spu_device[0].kobj);
- device_initialize(&iop_spu_device[1]);
- kobject_set_name(&iop_spu_device[1].kobj, "iop-spu1");
- kobject_add(&iop_spu_device[1].kobj);
- device_initialize(&iop_mpu_device);
- kobject_set_name(&iop_mpu_device.kobj, "iop-mpu");
- kobject_add(&iop_mpu_device.kobj);
-#endif
+ platform_device_register(&iop_mpu_device);
+ platform_device_register(&iop_spu_device[0]);
+ platform_device_register(&iop_spu_device[1]);
return 0;
}
static void __exit iop_fw_load_exit(void)
{
+ platform_device_unregister(&iop_mpu_device);
+ platform_device_unregister(&iop_spu_device[0]);
+ platform_device_unregister(&iop_spu_device[1]);
}
module_init(iop_fw_load_init);
@@ -225,6 +217,3 @@ module_exit(iop_fw_load_exit);
MODULE_DESCRIPTION("ETRAX FS IO-Processor Firmware Loader");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(iop_fw_load_spu);
-EXPORT_SYMBOL(iop_fw_load_mpu);
-EXPORT_SYMBOL(iop_start_mpu);
/^JN - Jesper Nilsson
--
Jesper Nilsson -- jesper.nilsson@...s.com
--
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