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rt2x00: Fix rfkill polling prior to interface start. 

We need to program the rfkill switch GPIO pin direction to input at
device initialization time, not only when the interface is brought up.
Doing this only when the interface is brought up could lead to rfkill
detecting the switch is turned on erroneously and inability to create
the interface and bringing it up.

Reported-and-tested-by: Andreas Messer <andi@bastelmap.de>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: <stable@vger.kernel.org>
Acked-by: Ivo Van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gertjan van Wingerde 2012-08-31 19:22:11 +02:00 committed by John W. Linville
parent 6ced58a5db
commit a396e10019
11 changed files with 69 additions and 0 deletions
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9
drivers/net/wireless/rt2x00/rt2400pci.c
View File

@ -1611,6 +1611,7 @@ static int rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@ -1623,6 +1624,14 @@ static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00pci_register_read(rt2x00dev, GPIOCSR, &reg);
rt2x00_set_field32(&reg, GPIOCSR_BIT8, 1);
rt2x00pci_register_write(rt2x00dev, GPIOCSR, reg);
/*
* Initialize hw specifications.
*/

1
drivers/net/wireless/rt2x00/rt2400pci.h
View File

@ -670,6 +670,7 @@
#define GPIOCSR_BIT5 FIELD32(0x00000020)
#define GPIOCSR_BIT6 FIELD32(0x00000040)
#define GPIOCSR_BIT7 FIELD32(0x00000080)
#define GPIOCSR_BIT8 FIELD32(0x00000100)
/*
* BBPPCSR: BBP Pin control register.

9
drivers/net/wireless/rt2x00/rt2500pci.c
View File

@ -1929,6 +1929,7 @@ static int rt2500pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
static int rt2500pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@ -1941,6 +1942,14 @@ static int rt2500pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00pci_register_read(rt2x00dev, GPIOCSR, &reg);
rt2x00_set_field32(&reg, GPIOCSR_DIR0, 1);
rt2x00pci_register_write(rt2x00dev, GPIOCSR, reg);
/*
* Initialize hw specifications.
*/

9
drivers/net/wireless/rt2x00/rt2500usb.c
View File

@ -1768,6 +1768,7 @@ static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u16 reg;
/*
* Allocate eeprom data.
@ -1780,6 +1781,14 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
rt2x00_set_field16(&reg, MAC_CSR19_BIT8, 0);
rt2500usb_register_write(rt2x00dev, MAC_CSR19, reg);
/*
* Initialize hw specifications.
*/

1
drivers/net/wireless/rt2x00/rt2500usb.h
View File

@ -197,6 +197,7 @@
#define MAC_CSR19_BIT5 FIELD16(0x0020)
#define MAC_CSR19_BIT6 FIELD16(0x0040)
#define MAC_CSR19_BIT7 FIELD16(0x0080)
#define MAC_CSR19_BIT8 FIELD16(0x0100)
/*
* MAC_CSR20: LED control register.

9
drivers/net/wireless/rt2x00/rt2800pci.c
View File

@ -983,6 +983,7 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@ -995,6 +996,14 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00pci_register_read(rt2x00dev, GPIO_CTRL_CFG, &reg);
rt2x00_set_field32(&reg, GPIO_CTRL_CFG_GPIOD_BIT2, 1);
rt2x00pci_register_write(rt2x00dev, GPIO_CTRL_CFG, reg);
/*
* Initialize hw specifications.
*/

9
drivers/net/wireless/rt2x00/rt2800usb.c
View File

@ -736,6 +736,7 @@ static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@ -748,6 +749,14 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00usb_register_read(rt2x00dev, GPIO_CTRL_CFG, &reg);
rt2x00_set_field32(&reg, GPIO_CTRL_CFG_GPIOD_BIT2, 1);
rt2x00usb_register_write(rt2x00dev, GPIO_CTRL_CFG, reg);
/*
* Initialize hw specifications.
*/

9
drivers/net/wireless/rt2x00/rt61pci.c
View File

@ -2832,6 +2832,7 @@ static int rt61pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Disable power saving.
@ -2849,6 +2850,14 @@ static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00pci_register_read(rt2x00dev, MAC_CSR13, &reg);
rt2x00_set_field32(&reg, MAC_CSR13_BIT13, 1);
rt2x00pci_register_write(rt2x00dev, MAC_CSR13, reg);
/*
* Initialize hw specifications.
*/

1
drivers/net/wireless/rt2x00/rt61pci.h
View File

@ -372,6 +372,7 @@ struct hw_pairwise_ta_entry {
#define MAC_CSR13_BIT10 FIELD32(0x00000400)
#define MAC_CSR13_BIT11 FIELD32(0x00000800)
#define MAC_CSR13_BIT12 FIELD32(0x00001000)
#define MAC_CSR13_BIT13 FIELD32(0x00002000)
/*
* MAC_CSR14: LED control register.

9
drivers/net/wireless/rt2x00/rt73usb.c
View File

@ -2177,6 +2177,7 @@ static int rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@ -2189,6 +2190,14 @@ static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00usb_register_read(rt2x00dev, MAC_CSR13, &reg);
rt2x00_set_field32(&reg, MAC_CSR13_BIT15, 0);
rt2x00usb_register_write(rt2x00dev, MAC_CSR13, reg);
/*
* Initialize hw specifications.
*/

3
drivers/net/wireless/rt2x00/rt73usb.h
View File

@ -282,6 +282,9 @@ struct hw_pairwise_ta_entry {
#define MAC_CSR13_BIT10 FIELD32(0x00000400)
#define MAC_CSR13_BIT11 FIELD32(0x00000800)
#define MAC_CSR13_BIT12 FIELD32(0x00001000)
#define MAC_CSR13_BIT13 FIELD32(0x00002000)
#define MAC_CSR13_BIT14 FIELD32(0x00004000)
#define MAC_CSR13_BIT15 FIELD32(0x00008000)
/*
* MAC_CSR14: LED control register.