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path: root/drivers/net/wireless/wl12xx/sdio.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/sdio.c')
-rw-r--r--drivers/net/wireless/wl12xx/sdio.c132
1 files changed, 109 insertions, 23 deletions
diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 93cbb8d5aba9..536e5065454b 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -28,6 +28,7 @@
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
#include <linux/gpio.h>
#include <linux/wl12xx.h>
#include <linux/pm_runtime.h>
@@ -50,6 +51,13 @@ static const struct sdio_device_id wl1271_devices[] = {
};
MODULE_DEVICE_TABLE(sdio, wl1271_devices);
+static void wl1271_sdio_set_block_size(struct wl1271 *wl, unsigned int blksz)
+{
+ sdio_claim_host(wl->if_priv);
+ sdio_set_block_size(wl->if_priv, blksz);
+ sdio_release_host(wl->if_priv);
+}
+
static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
{
return wl->if_priv;
@@ -60,7 +68,7 @@ static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
return &(wl_to_func(wl)->dev);
}
-static irqreturn_t wl1271_irq(int irq, void *cookie)
+static irqreturn_t wl1271_hardirq(int irq, void *cookie)
{
struct wl1271 *wl = cookie;
unsigned long flags;
@@ -69,17 +77,24 @@ static irqreturn_t wl1271_irq(int irq, void *cookie)
/* complete the ELP completion */
spin_lock_irqsave(&wl->wl_lock, flags);
+ set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
if (wl->elp_compl) {
complete(wl->elp_compl);
wl->elp_compl = NULL;
}
- if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
- ieee80211_queue_work(wl->hw, &wl->irq_work);
- set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
+ if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
+ /* don't enqueue a work right now. mark it as pending */
+ set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
+ wl1271_debug(DEBUG_IRQ, "should not enqueue work");
+ disable_irq_nosync(wl->irq);
+ pm_wakeup_event(wl1271_sdio_wl_to_dev(wl), 0);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+ return IRQ_HANDLED;
+ }
spin_unlock_irqrestore(&wl->wl_lock, flags);
- return IRQ_HANDLED;
+ return IRQ_WAKE_THREAD;
}
static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
@@ -106,8 +121,6 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
int ret;
struct sdio_func *func = wl_to_func(wl);
- sdio_claim_host(func);
-
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
@@ -123,8 +136,6 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
}
- sdio_release_host(func);
-
if (ret)
wl1271_error("sdio read failed (%d)", ret);
}
@@ -135,8 +146,6 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
int ret;
struct sdio_func *func = wl_to_func(wl);
- sdio_claim_host(func);
-
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
@@ -152,8 +161,6 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
ret = sdio_memcpy_toio(func, addr, buf, len);
}
- sdio_release_host(func);
-
if (ret)
wl1271_error("sdio write failed (%d)", ret);
}
@@ -163,14 +170,18 @@ static int wl1271_sdio_power_on(struct wl1271 *wl)
struct sdio_func *func = wl_to_func(wl);
int ret;
- /* Power up the card */
+ /* Make sure the card will not be powered off by runtime PM */
ret = pm_runtime_get_sync(&func->dev);
if (ret < 0)
goto out;
+ /* Runtime PM might be disabled, so power up the card manually */
+ ret = mmc_power_restore_host(func->card->host);
+ if (ret < 0)
+ goto out;
+
sdio_claim_host(func);
sdio_enable_func(func);
- sdio_release_host(func);
out:
return ret;
@@ -179,12 +190,17 @@ out:
static int wl1271_sdio_power_off(struct wl1271 *wl)
{
struct sdio_func *func = wl_to_func(wl);
+ int ret;
- sdio_claim_host(func);
sdio_disable_func(func);
sdio_release_host(func);
- /* Power down the card */
+ /* Runtime PM might be disabled, so power off the card manually */
+ ret = mmc_power_save_host(func->card->host);
+ if (ret < 0)
+ return ret;
+
+ /* Let runtime PM know the card is powered off */
return pm_runtime_put_sync(&func->dev);
}
@@ -204,7 +220,8 @@ static struct wl1271_if_operations sdio_ops = {
.power = wl1271_sdio_set_power,
.dev = wl1271_sdio_wl_to_dev,
.enable_irq = wl1271_sdio_enable_interrupts,
- .disable_irq = wl1271_sdio_disable_interrupts
+ .disable_irq = wl1271_sdio_disable_interrupts,
+ .set_block_size = wl1271_sdio_set_block_size,
};
static int __devinit wl1271_probe(struct sdio_func *func,
@@ -213,6 +230,8 @@ static int __devinit wl1271_probe(struct sdio_func *func,
struct ieee80211_hw *hw;
const struct wl12xx_platform_data *wlan_data;
struct wl1271 *wl;
+ unsigned long irqflags;
+ mmc_pm_flag_t mmcflags;
int ret;
/* We are only able to handle the wlan function */
@@ -231,6 +250,9 @@ static int __devinit wl1271_probe(struct sdio_func *func,
/* Grab access to FN0 for ELP reg. */
func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
+ /* Use block mode for transferring over one block size of data */
+ func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
+
wlan_data = wl12xx_get_platform_data();
if (IS_ERR(wlan_data)) {
ret = PTR_ERR(wlan_data);
@@ -240,17 +262,34 @@ static int __devinit wl1271_probe(struct sdio_func *func,
wl->irq = wlan_data->irq;
wl->ref_clock = wlan_data->board_ref_clock;
+ wl->tcxo_clock = wlan_data->board_tcxo_clock;
+ wl->platform_quirks = wlan_data->platform_quirks;
- ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
+ if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+ irqflags = IRQF_TRIGGER_RISING;
+ else
+ irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
+
+ ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
+ irqflags,
+ DRIVER_NAME, wl);
if (ret < 0) {
wl1271_error("request_irq() failed: %d", ret);
goto out_free;
}
- set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+ enable_irq_wake(wl->irq);
+ device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 1);
disable_irq(wl->irq);
+ /* if sdio can keep power while host is suspended, enable wow */
+ mmcflags = sdio_get_host_pm_caps(func);
+ wl1271_debug(DEBUG_SDIO, "sdio PM caps = 0x%x", mmcflags);
+
+ if (mmcflags & MMC_PM_KEEP_POWER)
+ hw->wiphy->wowlan.flags = WIPHY_WOWLAN_ANY;
+
ret = wl1271_init_ieee80211(wl);
if (ret)
goto out_irq;
@@ -271,7 +310,6 @@ static int __devinit wl1271_probe(struct sdio_func *func,
out_irq:
free_irq(wl->irq, wl);
-
out_free:
wl1271_free_hw(wl);
@@ -286,19 +324,61 @@ static void __devexit wl1271_remove(struct sdio_func *func)
pm_runtime_get_noresume(&func->dev);
wl1271_unregister_hw(wl);
+ device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 0);
+ disable_irq_wake(wl->irq);
free_irq(wl->irq, wl);
wl1271_free_hw(wl);
}
+#ifdef CONFIG_PM
static int wl1271_suspend(struct device *dev)
{
/* Tell MMC/SDIO core it's OK to power down the card
* (if it isn't already), but not to remove it completely */
- return 0;
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct wl1271 *wl = sdio_get_drvdata(func);
+ mmc_pm_flag_t sdio_flags;
+ int ret = 0;
+
+ wl1271_debug(DEBUG_MAC80211, "wl1271 suspend. wow_enabled: %d",
+ wl->wow_enabled);
+
+ /* check whether sdio should keep power */
+ if (wl->wow_enabled) {
+ sdio_flags = sdio_get_host_pm_caps(func);
+
+ if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
+ wl1271_error("can't keep power while host "
+ "is suspended");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* keep power while host suspended */
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ if (ret) {
+ wl1271_error("error while trying to keep power");
+ goto out;
+ }
+
+ /* release host */
+ sdio_release_host(func);
+ }
+out:
+ return ret;
}
static int wl1271_resume(struct device *dev)
{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct wl1271 *wl = sdio_get_drvdata(func);
+
+ wl1271_debug(DEBUG_MAC80211, "wl1271 resume");
+ if (wl->wow_enabled) {
+ /* claim back host */
+ sdio_claim_host(func);
+ }
+
return 0;
}
@@ -306,15 +386,18 @@ static const struct dev_pm_ops wl1271_sdio_pm_ops = {
.suspend = wl1271_suspend,
.resume = wl1271_resume,
};
+#endif
static struct sdio_driver wl1271_sdio_driver = {
.name = "wl1271_sdio",
.id_table = wl1271_devices,
.probe = wl1271_probe,
.remove = __devexit_p(wl1271_remove),
+#ifdef CONFIG_PM
.drv = {
.pm = &wl1271_sdio_pm_ops,
},
+#endif
};
static int __init wl1271_init(void)
@@ -342,6 +425,9 @@ module_init(wl1271_init);
module_exit(wl1271_exit);
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
+MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
MODULE_FIRMWARE(WL1271_FW_NAME);
+MODULE_FIRMWARE(WL128X_FW_NAME);
+MODULE_FIRMWARE(WL127X_AP_FW_NAME);
+MODULE_FIRMWARE(WL128X_AP_FW_NAME);
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