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usb: ehci-mx6: Use shared wait_for_bit

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Use existing library function to poll bit(s).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
This commit is contained in:
Mateusz Kulikowski 2016-01-23 11:54:32 +01:00 committed by Tom Rini
parent 8d5c7bb294
commit 8c25c2592e
1 changed files with 4 additions and 28 deletions
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32
drivers/usb/host/ehci-mx6.c
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@ -8,6 +8,7 @@
#include <common.h> #include <common.h>
#include <usb.h> #include <usb.h>
#include <errno.h> #include <errno.h>
#include <wait_bit.h>
#include <linux/compiler.h> #include <linux/compiler.h>
#include <usb/ehci-fsl.h> #include <usb/ehci-fsl.h>
#include <asm/io.h> #include <asm/io.h>
@ -117,32 +118,6 @@ static void usb_power_config(int index)
pll_480_ctrl_set); pll_480_ctrl_set);
} }
static int wait_for_bit(u32 *reg, const u32 mask, bool set)
{
u32 val;
const unsigned int timeout = 10000;
unsigned long start = get_timer(0);
while(1) {
val = readl(reg);
if (!set)
val = ~val;
if ((val & mask) == mask)
return 0;
if (get_timer(start) > timeout)
break;
udelay(1);
}
debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
__func__, reg, mask, set);
return -ETIMEDOUT;
}
/* Return 0 : host node, <>0 : device mode */ /* Return 0 : host node, <>0 : device mode */
static int usb_phy_enable(int index, struct usb_ehci *ehci) static int usb_phy_enable(int index, struct usb_ehci *ehci)
{ {
@ -160,12 +135,13 @@ static int usb_phy_enable(int index, struct usb_ehci *ehci)
/* Stop then Reset */ /* Stop then Reset */
clrbits_le32(usb_cmd, UCMD_RUN_STOP); clrbits_le32(usb_cmd, UCMD_RUN_STOP);
ret = wait_for_bit(usb_cmd, UCMD_RUN_STOP, 0); ret = wait_for_bit(__func__, usb_cmd, UCMD_RUN_STOP, false, 10000,
false);
if (ret) if (ret)
return ret; return ret;
setbits_le32(usb_cmd, UCMD_RESET); setbits_le32(usb_cmd, UCMD_RESET);
ret = wait_for_bit(usb_cmd, UCMD_RESET, 0); ret = wait_for_bit(__func__, usb_cmd, UCMD_RESET, false, 10000, false);
if (ret) if (ret)
return ret; return ret;