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phy-rcar-usb: correct base address 

The memory region that is used by the driver overlaps EHCI and OHCI  register
regions for absolutely no reason now  -- fix it  by adding offset of 0x800 to
the base address, changing the register #define's accordingly. This has extra
positive effect that we now can use devm_ioremap_resource()...

Note that the driver and the SoC code have to be in one patch to keep the code
bisectable...

The patch has been tested on the Marzen board.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Sergei Shtylyov 2013-06-02 01:50:25 +04:00 committed by Simon Horman
parent bb6e7d61dd
commit 725bf9dcaf
2 changed files with 11 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-shmobile/setup-r8a7779.c
View File

@ -391,7 +391,7 @@ static struct platform_device sata_device = {
/* USB PHY */
static struct resource usb_phy_resources[] = {
[0] = {
.start = 0xffe70000,
.start = 0xffe70800,
.end = 0xffe70900 - 1,
.flags = IORESOURCE_MEM,
},

28
drivers/usb/phy/phy-rcar-usb.c
View File

@ -16,13 +16,13 @@
#include <linux/spinlock.h>
#include <linux/module.h>
/* USBH common register */
#define USBPCTRL0 0x0800
#define USBPCTRL1 0x0804
#define USBST 0x0808
#define USBEH0 0x080C
#define USBOH0 0x081C
#define USBCTL0 0x0858
/* REGS block */
#define USBPCTRL0 0x00
#define USBPCTRL1 0x04
#define USBST 0x08
#define USBEH0 0x0C
#define USBOH0 0x1C
#define USBCTL0 0x58
/* USBPCTRL1 */
#define PHY_RST (1 << 2)
@ -139,17 +139,9 @@ static int rcar_usb_phy_probe(struct platform_device *pdev)
return -EINVAL;
}
/*
* CAUTION
*
* Because this phy address is also mapped under OHCI/EHCI address area,
* this driver can't use devm_request_and_ioremap(dev, res) here
*/
reg0 = devm_ioremap_nocache(dev, res0->start, resource_size(res0));
if (!reg0) {
dev_err(dev, "ioremap error\n");
return -ENOMEM;
}
reg0 = devm_ioremap_resource(dev, res0);
if (IS_ERR(reg0))
return PTR_ERR(reg0);
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {