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Message-Id: <1445381258-1455986-15-git-send-email-arnd@arndb.de>
Date: Wed, 21 Oct 2015 00:47:33 +0200
From: Arnd Bergmann <arnd@...db.de>
To: linux-wireless@...r.kernel.org
Cc: Rachel Kim <rachel.kim@...el.com>, devel@...verdev.osuosl.org,
Chris Park <chris.park@...el.com>, gregkh@...uxfoundation.org,
Stanislav Kholmanskikh <kholmanskikh.s.s@...il.com>,
Johnny Kim <johnny.kim@...el.com>,
linux-kernel@...r.kernel.org, Tony Cho <tony.cho@...el.com>,
Glen Lee <glen.lee@...el.com>, Leo Kim <leo.kim@...el.com>,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 14/19] staging/wilc1000: get rid of WILC_SDIO_IRQ_GPIO
Whether the SDIO function uses an internal or external interrupt
should not be a compiletime decision but be determined at runtime.
This changes the code to pass a GPIO number from the init code
as early as possible, and leaves just one #ifdef WILC_SDIO_IRQ_GPIO
to preserve the previous behavior.
All other locations that check for the interrupt method are turned
into runtime checks based on the gpio number (>=0) or the interrupt
number (>0).
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
drivers/staging/wilc1000/Makefile | 1 -
drivers/staging/wilc1000/linux_wlan.c | 66 +++++++---------
drivers/staging/wilc1000/linux_wlan_sdio.c | 26 ++++---
drivers/staging/wilc1000/linux_wlan_spi.c | 2 +-
drivers/staging/wilc1000/wilc_sdio.c | 105 +++++++++++---------------
drivers/staging/wilc1000/wilc_wfi_netdevice.h | 5 +-
drivers/staging/wilc1000/wilc_wlan.c | 8 +-
drivers/staging/wilc1000/wilc_wlan.h | 2 +-
8 files changed, 94 insertions(+), 121 deletions(-)
diff --git a/drivers/staging/wilc1000/Makefile b/drivers/staging/wilc1000/Makefile
index 55b2ac2b15a8..b96fee8f94f2 100644
--- a/drivers/staging/wilc1000/Makefile
+++ b/drivers/staging/wilc1000/Makefile
@@ -1,7 +1,6 @@
obj-$(CONFIG_WILC1000) += wilc1000.o
ccflags-$(CONFIG_WILC1000_SDIO) += -DWILC_SDIO -DCOMPLEMENT_BOOT
-ccflags-$(CONFIG_WILC1000_HW_OOB_INTR) += -DWILC_SDIO_IRQ_GPIO
ccflags-$(CONFIG_WILC1000_SPI) += -DWILC_SPI
ccflags-y += -DSTA_FIRMWARE=\"atmel/wilc1000_fw.bin\" \
diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c
index 980c2c8d300d..beafc543aac3 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -170,7 +170,6 @@ static int dev_state_ev_handler(struct notifier_block *this, unsigned long event
}
-#if (defined WILC_SPI) || (defined WILC_SDIO_IRQ_GPIO)
static irqreturn_t isr_uh_routine(int irq, void *user_data)
{
PRINT_D(INT_DBG, "Interrupt received UH\n");
@@ -208,16 +207,16 @@ static int init_irq(struct wilc *p_nic)
/*initialize GPIO and register IRQ num*/
/*GPIO request*/
- if ((gpio_request(GPIO_NUM, "WILC_INTR") == 0) &&
- (gpio_direction_input(GPIO_NUM) == 0)) {
+ if ((gpio_request(nic->gpio, "WILC_INTR") == 0) &&
+ (gpio_direction_input(nic->gpio) == 0)) {
#if defined(CUSTOMER_PLATFORM)
/*
TODO : save the registerd irq number to the private wilc context in kernel.
*
- * ex) nic->dev_irq_num = gpio_to_irq(GPIO_NUM);
+ * ex) nic->dev_irq_num = gpio_to_irq(nic->gpio);
*/
#else
- nic->dev_irq_num = gpio_to_irq(GPIO_NUM);
+ nic->dev_irq_num = gpio_to_irq(nic->gpio);
#endif
} else {
ret = -1;
@@ -228,28 +227,25 @@ static int init_irq(struct wilc *p_nic)
IRQF_TRIGGER_LOW | IRQF_ONESHOT, /*Without IRQF_ONESHOT the uh will remain kicked in and dont gave a chance to bh*/
"WILC_IRQ", nic)) < 0) {
- PRINT_ER("Failed to request IRQ for GPIO: %d\n", GPIO_NUM);
+ PRINT_ER("Failed to request IRQ for GPIO: %d\n", nic->gpio);
ret = -1;
} else {
PRINT_D(INIT_DBG, "IRQ request succeeded IRQ-NUM= %d on GPIO: %d\n",
- nic->dev_irq_num, GPIO_NUM);
+ nic->dev_irq_num, nic->gpio);
}
return ret;
}
-#endif
static void deinit_irq(struct wilc *nic)
{
-#if (defined WILC_SPI) || (defined WILC_SDIO_IRQ_GPIO)
/* Deintialize IRQ */
- if (&nic->dev_irq_num != 0) {
+ if (nic->gpio >= 0 && &nic->dev_irq_num != 0) {
free_irq(nic->dev_irq_num, wilc1000_dev);
- gpio_free(GPIO_NUM);
+ gpio_free(nic->gpio);
}
-#endif
}
/*
@@ -830,11 +826,11 @@ void wilc1000_wlan_deinit(struct wilc *nic)
#endif
PRINT_D(INIT_DBG, "Disabling IRQ\n");
-#ifdef WILC_SDIO
- mutex_lock(&wilc1000_dev->hif_cs);
- wilc1000_sdio_disable_interrupt();
- mutex_unlock(&wilc1000_dev->hif_cs);
-#endif
+ if (wilc1000_dev->gpio < 0) {
+ mutex_lock(&wilc1000_dev->hif_cs);
+ wilc1000_sdio_disable_interrupt();
+ mutex_unlock(&wilc1000_dev->hif_cs);
+ }
if (&wilc1000_dev->txq_event != NULL)
up(&wilc1000_dev->txq_event);
@@ -848,14 +844,13 @@ void wilc1000_wlan_deinit(struct wilc *nic)
PRINT_D(INIT_DBG, "Deinitializing WILC Wlan\n");
wilc_wlan_cleanup();
-#if (defined WILC_SDIO) && (!defined WILC_SDIO_IRQ_GPIO)
- #if defined(PLAT_ALLWINNER_A20) || defined(PLAT_ALLWINNER_A23) || defined(PLAT_ALLWINNER_A31)
- PRINT_D(INIT_DBG, "Disabling IRQ 2\n");
-
- mutex_lock(&wilc1000_dev->hif_cs);
- wilc1000_sdio_disable_interrupt();
- mutex_unlock(&wilc1000_dev->hif_cs);
- #endif
+#if defined(PLAT_ALLWINNER_A20) || defined(PLAT_ALLWINNER_A23) || defined(PLAT_ALLWINNER_A31)
+ if (wilc1000_dev->gpio < 0) {
+ PRINT_D(INIT_DBG, "Disabling IRQ 2\n");
+
+ mutex_lock(&wilc1000_dev->hif_cs);
+ wilc1000_sdio_disable_interrupt();
+ mutex_unlock(&wilc1000_dev->hif_cs);
#endif
/*De-Initialize locks*/
@@ -982,21 +977,17 @@ int wilc1000_wlan_init(struct net_device *dev, perInterface_wlan_t *p_nic)
goto _fail_threads_;
}
-#if (!defined WILC_SDIO) || (defined WILC_SDIO_IRQ_GPIO)
- if (init_irq(wilc1000_dev)) {
+ if (wilc1000_dev->gpio >= 0 && init_irq(wilc1000_dev)) {
PRINT_ER("couldn't initialize IRQ\n");
ret = -EIO;
goto _fail_threads_;
}
-#endif
-#if (defined WILC_SDIO) && (!defined WILC_SDIO_IRQ_GPIO)
- if (wilc1000_sdio_enable_interrupt()) {
+ if (wilc1000_dev->gpio < 0 && wilc1000_sdio_enable_interrupt()) {
PRINT_ER("couldn't initialize IRQ\n");
ret = -EIO;
goto _fail_irq_init_;
}
-#endif
if (wilc1000_wlan_get_firmware(nic)) {
PRINT_ER("Can't get firmware\n");
@@ -1048,14 +1039,12 @@ _fail_fw_start_:
wilc_wlan_stop();
_fail_irq_enable_:
-#if (defined WILC_SDIO) && (!defined WILC_SDIO_IRQ_GPIO)
- wilc1000_sdio_disable_interrupt();
+ if (wilc1000_dev->gpio < 0)
+ wilc1000_sdio_disable_interrupt();
_fail_irq_init_:
-#endif
-#if (!defined WILC_SDIO) || (defined WILC_SDIO_IRQ_GPIO)
- deinit_irq(wilc1000_dev);
+ if (wilc1000_dev->gpio >= 0)
+ deinit_irq(wilc1000_dev);
-#endif
_fail_threads_:
wlan_deinitialize_threads(wilc1000_dev);
_fail_wilc_wlan_:
@@ -1511,7 +1500,7 @@ void WILC_WFI_mgmt_rx(u8 *buff, u32 size)
WILC_WFI_p2p_rx(wilc1000_dev->strInterfaceInfo[1].wilc_netdev, buff, size);
}
-int wilc_netdev_init(struct device *dev, const struct wilc1000_ops *ops)
+int wilc_netdev_init(struct device *dev, const struct wilc1000_ops *ops, int gpio)
{
int i;
@@ -1526,6 +1515,7 @@ int wilc_netdev_init(struct device *dev, const struct wilc1000_ops *ops)
return -ENOMEM;
wilc1000_dev->ops = ops;
+ wilc1000_dev->gpio = gpio;
register_inetaddr_notifier(&g_dev_notifier);
diff --git a/drivers/staging/wilc1000/linux_wlan_sdio.c b/drivers/staging/wilc1000/linux_wlan_sdio.c
index bb4a3acf16d0..64c8c5725277 100644
--- a/drivers/staging/wilc1000/linux_wlan_sdio.c
+++ b/drivers/staging/wilc1000/linux_wlan_sdio.c
@@ -7,6 +7,7 @@
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/host.h>
+#include <linux/of_gpio.h>
@@ -36,15 +37,12 @@ static const struct sdio_device_id wilc_sdio_ids[] = {
};
-#ifndef WILC_SDIO_IRQ_GPIO
static void wilc_sdio_interrupt(struct sdio_func *func)
{
sdio_release_host(func);
wilc_handle_isr();
sdio_claim_host(func);
}
-#endif
-
static int wilc1000_sdio_cmd52(sdio_cmd52_t *cmd)
{
@@ -161,9 +159,8 @@ static int repeat_power_cycle(perInterface_wlan_t *nic)
ret = wilc_wlan_init(wilc1000_dev);
wilc1000_dev->mac_status = WILC_MAC_STATUS_INIT;
-#if !defined WILC_SDIO_IRQ_GPIO
- wilc1000_sdio_enable_interrupt();
-#endif
+ if (wilc1000_dev->gpio < 0)
+ wilc1000_sdio_enable_interrupt();
if (wilc1000_wlan_get_firmware(nic)) {
PRINT_ER("Can't get firmware\n");
@@ -188,6 +185,8 @@ __fail__:
static int linux_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
{
+ int gpio;
+
PRINT_D(INIT_DBG, "probe function\n");
#ifdef COMPLEMENT_BOOT
@@ -198,9 +197,17 @@ static int linux_sdio_probe(struct sdio_func *func, const struct sdio_device_id
return 0;
}
#endif
+
+ gpio = -1;
+ if (IS_ENABLED(CONFIG_WILC1000_HW_OOB_INTR)) {
+ gpio = of_get_gpio(func->dev.of_node, 0);
+ if (gpio < 0)
+ gpio = GPIO_NUM;
+ }
+
PRINT_D(INIT_DBG, "Initializing netdev\n");
wilc1000_sdio_func = func;
- if (wilc_netdev_init(&func->dev, &wilc1000_sdio_ops)) {
+ if (wilc_netdev_init(&func->dev, &wilc1000_sdio_ops, gpio)) {
PRINT_ER("Couldn't initialize netdev\n");
return -1;
}
@@ -228,7 +235,6 @@ static struct sdio_driver wilc_bus = {
int wilc1000_sdio_enable_interrupt(void)
{
int ret = 0;
-#ifndef WILC_SDIO_IRQ_GPIO
sdio_claim_host(wilc1000_sdio_func);
ret = sdio_claim_irq(wilc1000_sdio_func, wilc_sdio_interrupt);
@@ -238,14 +244,11 @@ int wilc1000_sdio_enable_interrupt(void)
PRINT_ER("can't claim sdio_irq, err(%d)\n", ret);
ret = -EIO;
}
-#endif
return ret;
}
void wilc1000_sdio_disable_interrupt(void)
{
-
-#ifndef WILC_SDIO_IRQ_GPIO
int ret;
PRINT_D(INIT_DBG, "wilc1000_sdio_disable_interrupt IN\n");
@@ -258,7 +261,6 @@ void wilc1000_sdio_disable_interrupt(void)
sdio_release_host(wilc1000_sdio_func);
PRINT_D(INIT_DBG, "wilc1000_sdio_disable_interrupt OUT\n");
-#endif
}
static int linux_sdio_set_speed(int speed)
diff --git a/drivers/staging/wilc1000/linux_wlan_spi.c b/drivers/staging/wilc1000/linux_wlan_spi.c
index 788531e314c3..c6ea3ef0664f 100644
--- a/drivers/staging/wilc1000/linux_wlan_spi.c
+++ b/drivers/staging/wilc1000/linux_wlan_spi.c
@@ -424,7 +424,7 @@ static int __init init_wilc_spi_driver(void)
int ret;
wilc1000_init_driver();
- ret = wilc_netdev_init(NULL, &wilc1000_spi_ops);
+ ret = wilc_netdev_init(NULL, &wilc1000_spi_ops, GPIO_NUM);
if (ret)
return ret;
diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc1000/wilc_sdio.c
index 2d39a5386718..69b7c72b76c5 100644
--- a/drivers/staging/wilc1000/wilc_sdio.c
+++ b/drivers/staging/wilc1000/wilc_sdio.c
@@ -16,6 +16,7 @@
typedef struct {
void *os_context;
+ bool irq_gpio;
u32 block_size;
int (*sdio_cmd52)(sdio_cmd52_t *);
int (*sdio_cmd53)(sdio_cmd53_t *);
@@ -29,10 +30,8 @@ typedef struct {
static wilc_sdio_t g_sdio;
-#ifdef WILC_SDIO_IRQ_GPIO
static int sdio_write_reg(u32 addr, u32 data);
static int sdio_read_reg(u32 addr, u32 *data);
-#endif
/********************************************
*
@@ -135,29 +134,29 @@ _fail_:
static int sdio_clear_int(void)
{
-#ifndef WILC_SDIO_IRQ_GPIO
- /* u32 sts; */
- sdio_cmd52_t cmd;
+ if (!g_sdio.irq_gpio) {
+ /* u32 sts; */
+ sdio_cmd52_t cmd;
- cmd.read_write = 0;
- cmd.function = 1;
- cmd.raw = 0;
- cmd.address = 0x4;
- cmd.data = 0;
- g_sdio.sdio_cmd52(&cmd);
+ cmd.read_write = 0;
+ cmd.function = 1;
+ cmd.raw = 0;
+ cmd.address = 0x4;
+ cmd.data = 0;
+ g_sdio.sdio_cmd52(&cmd);
- return cmd.data;
-#else
- u32 reg;
+ return cmd.data;
+ } else {
+ u32 reg;
- if (!sdio_read_reg(WILC_HOST_RX_CTRL_0, ®)) {
- g_sdio.dPrint(N_ERR, "[wilc spi]: Failed read reg (%08x)...\n", WILC_HOST_RX_CTRL_0);
- return 0;
+ if (!sdio_read_reg(WILC_HOST_RX_CTRL_0, ®)) {
+ g_sdio.dPrint(N_ERR, "[wilc spi]: Failed read reg (%08x)...\n", WILC_HOST_RX_CTRL_0);
+ return 0;
+ }
+ reg &= ~0x1;
+ sdio_write_reg(WILC_HOST_RX_CTRL_0, reg);
+ return 1;
}
- reg &= ~0x1;
- sdio_write_reg(WILC_HOST_RX_CTRL_0, reg);
- return 1;
-#endif
}
@@ -459,8 +458,7 @@ static int sdio_sync(void)
return 0;
}
-#ifdef WILC_SDIO_IRQ_GPIO
- {
+ if (g_sdio.irq_gpio) {
u32 reg;
int ret;
@@ -494,7 +492,6 @@ static int sdio_sync(void)
return 0;
}
}
-#endif
return 1;
}
@@ -509,6 +506,7 @@ static int sdio_init(struct wilc *inp, wilc_debug_func func)
g_sdio.dPrint = func;
g_sdio.os_context = inp;
+ g_sdio.irq_gpio = (inp->gpio >= 0);
if (inp->ops->io_init) {
if (!inp->ops->io_init(g_sdio.os_context)) {
@@ -674,36 +672,33 @@ static int sdio_read_int(u32 *int_status)
/**
* Read IRQ flags
**/
-#ifndef WILC_SDIO_IRQ_GPIO
- cmd.function = 1;
- cmd.address = 0x04;
- cmd.data = 0;
- g_sdio.sdio_cmd52(&cmd);
-
- if (cmd.data & BIT(0))
- tmp |= INT_0;
- if (cmd.data & BIT(2))
- tmp |= INT_1;
- if (cmd.data & BIT(3))
- tmp |= INT_2;
- if (cmd.data & BIT(4))
- tmp |= INT_3;
- if (cmd.data & BIT(5))
- tmp |= INT_4;
- if (cmd.data & BIT(6))
- tmp |= INT_5;
- {
+ if (!g_sdio.irq_gpio) {
int i;
+ cmd.function = 1;
+ cmd.address = 0x04;
+ cmd.data = 0;
+ g_sdio.sdio_cmd52(&cmd);
+
+ if (cmd.data & BIT(0))
+ tmp |= INT_0;
+ if (cmd.data & BIT(2))
+ tmp |= INT_1;
+ if (cmd.data & BIT(3))
+ tmp |= INT_2;
+ if (cmd.data & BIT(4))
+ tmp |= INT_3;
+ if (cmd.data & BIT(5))
+ tmp |= INT_4;
+ if (cmd.data & BIT(6))
+ tmp |= INT_5;
for (i = g_sdio.nint; i < MAX_NUM_INT; i++) {
if ((tmp >> (IRG_FLAGS_OFFSET + i)) & 0x1) {
g_sdio.dPrint(N_ERR, "[wilc sdio]: Unexpected interrupt (1) : tmp=%x, data=%x\n", tmp, cmd.data);
break;
}
}
- }
-#else
- {
+ } else {
u32 irq_flags;
cmd.read_write = 0;
@@ -716,8 +711,6 @@ static int sdio_read_int(u32 *int_status)
tmp |= ((irq_flags >> 0) << IRG_FLAGS_OFFSET);
}
-#endif
-
*int_status = tmp;
return 1;
@@ -730,16 +723,14 @@ static int sdio_clear_int_ext(u32 val)
if (g_sdio.has_thrpt_enh3) {
u32 reg;
-#ifdef WILC_SDIO_IRQ_GPIO
- {
+ if (g_sdio.irq_gpio) {
u32 flags;
flags = val & (BIT(MAX_NUN_INT_THRPT_ENH2) - 1);
reg = flags;
+ } else {
+ reg = 0;
}
-#else
- reg = 0;
-#endif
/* select VMM table 0 */
if ((val & SEL_VMM_TBL0) == SEL_VMM_TBL0)
reg |= BIT(5);
@@ -766,8 +757,7 @@ static int sdio_clear_int_ext(u32 val)
}
} else {
-#ifdef WILC_SDIO_IRQ_GPIO
- {
+ if (g_sdio.irq_gpio) {
/* see below. has_thrpt_enh2 uses register 0xf8 to clear interrupts. */
/* Cannot clear multiple interrupts. Must clear each interrupt individually */
u32 flags;
@@ -807,7 +797,6 @@ static int sdio_clear_int_ext(u32 val)
}
}
}
-#endif /* WILC_SDIO_IRQ_GPIO */
{
u32 vmm_ctl;
@@ -874,8 +863,7 @@ static int sdio_sync_ext(int nint /* how mant interrupts to enable. */)
return 0;
}
-#ifdef WILC_SDIO_IRQ_GPIO
- {
+ if (g_sdio.irq_gpio) {
u32 reg;
int ret, i;
@@ -927,7 +915,6 @@ static int sdio_sync_ext(int nint /* how mant interrupts to enable. */)
}
}
}
-#endif /* WILC_SDIO_IRQ_GPIO */
return 1;
}
diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h
index ec5a8b1215b7..f1f78f51fea0 100644
--- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h
+++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h
@@ -159,9 +159,8 @@ struct wilc {
const struct wilc1000_ops *ops;
int mac_status;
int wilc1000_initialized;
- #if (!defined WILC_SDIO) || (defined WILC_SDIO_IRQ_GPIO)
- unsigned short dev_irq_num;
- #endif
+ int gpio;
+ int dev_irq_num;
int close;
u8 u8NoIfcs;
struct wilc_vif strInterfaceInfo[NUM_CONCURRENT_IFC];
diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index 7e1b892f721d..d12a4e7df32c 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -1369,9 +1369,6 @@ void wilc_handle_isr(void)
wilc_sleeptimer_isr_ext(int_status);
if (!(int_status & (ALL_INT_EXT))) {
-#ifdef WILC_SDIO
- PRINT_D(TX_DBG, ">> UNKNOWN_INTERRUPT - 0x%08x\n", int_status);
-#endif
wilc_unknown_isr_ext();
}
release_bus(RELEASE_ALLOW_SLEEP);
@@ -1481,9 +1478,8 @@ int wilc_wlan_start(void)
return ret;
}
reg = 0;
-#ifdef WILC_SDIO_IRQ_GPIO
- reg |= WILC_HAVE_SDIO_IRQ_GPIO;
-#endif
+ if (p->io_func->io_type == HIF_SDIO && wilc1000_dev->gpio >= 0)
+ reg |= WILC_HAVE_SDIO_IRQ_GPIO;
#ifdef WILC_DISABLE_PMU
#else
diff --git a/drivers/staging/wilc1000/wilc_wlan.h b/drivers/staging/wilc1000/wilc_wlan.h
index 10b2a2f9e1b2..2e9b5d50ff7e 100644
--- a/drivers/staging/wilc1000/wilc_wlan.h
+++ b/drivers/staging/wilc1000/wilc_wlan.h
@@ -321,7 +321,7 @@ void wilc1000_enable_tcp_ack_filter(bool value);
void wilc1000_chip_sleep_manually(u32 u32SleepTime);
int wilc1000_wlan_get_num_conn_ifcs(void);
int wilc1000_mac_xmit(struct sk_buff *skb, struct net_device *dev);
-int wilc_netdev_init(struct device *, const struct wilc1000_ops *ops);
+int wilc_netdev_init(struct device *, const struct wilc1000_ops *ops, int gpio);
void __exit wilc_netdev_free(struct wilc *wilc1000_dev);
void wilc_handle_isr(void);
--
2.1.0.rc2
--
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