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usb: musb: kill global and static for multi instance

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Moved global variable "musb_debugfs_root" and static variable
"old_state" to 'struct musb' to help support multi instance of
musb controller as present on AM335x platform.

Also removed the global variable "orig_dma_mask" and filled the
dev->dma_mask with parent device's dma_mask.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Santhapuri, Damodar <damodar.santhapuri@ti.com>
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ajay Kumar Gupta 2012-08-31 11:09:50 +00:00 committed by Felipe Balbi
parent 65b3d52d02
commit 8d2421e68c
3 changed files with 14 additions and 20 deletions
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22
drivers/usb/musb/musb_core.c
View File

@ -100,6 +100,7 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/idr.h>
#include <linux/dma-mapping.h>
#include "musb_core.h"
@ -1797,10 +1798,9 @@ static const struct attribute_group musb_attr_group = {
static void musb_irq_work(struct work_struct *data)
{
struct musb *musb = container_of(data, struct musb, irq_work);
static int old_state;
if (musb->xceiv->state != old_state) {
old_state = musb->xceiv->state;
if (musb->xceiv->state != musb->xceiv_old_state) {
musb->xceiv_old_state = musb->xceiv->state;
sysfs_notify(&musb->controller->kobj, NULL, "mode");
}
}
@ -2060,11 +2060,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
/* all implementations (PCI bridge to FPGA, VLYNQ, etc) should just
* bridge to a platform device; this driver then suffices.
*/
#ifndef CONFIG_MUSB_PIO_ONLY
static u64 *orig_dma_mask;
#endif
static int __devinit musb_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -2083,10 +2078,6 @@ static int __devinit musb_probe(struct platform_device *pdev)
return -ENOMEM;
}
#ifndef CONFIG_MUSB_PIO_ONLY
/* clobbered by use_dma=n */
orig_dma_mask = dev->dma_mask;
#endif
status = musb_init_controller(dev, irq, base);
if (status < 0)
iounmap(base);
@ -2096,7 +2087,8 @@ static int __devinit musb_probe(struct platform_device *pdev)
static int __devexit musb_remove(struct platform_device *pdev)
{
struct musb *musb = dev_to_musb(&pdev->dev);
struct device *dev = &pdev->dev;
struct musb *musb = dev_to_musb(dev);
void __iomem *ctrl_base = musb->ctrl_base;
/* this gets called on rmmod.
@ -2109,9 +2101,9 @@ static int __devexit musb_remove(struct platform_device *pdev)
musb_free(musb);
iounmap(ctrl_base);
device_init_wakeup(&pdev->dev, 0);
device_init_wakeup(dev, 0);
#ifndef CONFIG_MUSB_PIO_ONLY
pdev->dev.dma_mask = orig_dma_mask;
dma_set_mask(dev, *dev->parent->dma_mask);
#endif
return 0;
}

4
drivers/usb/musb/musb_core.h
View File

@ -436,6 +436,10 @@ struct musb {
#ifdef MUSB_CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
#endif
int xceiv_old_state;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
#endif
};

8
drivers/usb/musb/musb_debugfs.c
View File

@ -103,8 +103,6 @@ static const struct musb_register_map musb_regmap[] = {
{ } /* Terminating Entry */
};
static struct dentry *musb_debugfs_root;
static int musb_regdump_show(struct seq_file *s, void *unused)
{
struct musb *musb = s->private;
@ -241,7 +239,7 @@ int __devinit musb_init_debugfs(struct musb *musb)
struct dentry *file;
int ret;
root = debugfs_create_dir("musb", NULL);
root = debugfs_create_dir(dev_name(musb->controller), NULL);
if (!root) {
ret = -ENOMEM;
goto err0;
@ -261,7 +259,7 @@ int __devinit musb_init_debugfs(struct musb *musb)
goto err1;
}
musb_debugfs_root = root;
musb->debugfs_root = root;
return 0;
@ -274,5 +272,5 @@ int __devinit musb_init_debugfs(struct musb *musb)
void /* __init_or_exit */ musb_exit_debugfs(struct musb *musb)
{
debugfs_remove_recursive(musb_debugfs_root);
debugfs_remove_recursive(musb->debugfs_root);
}