#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include <linux/spi/wl12xx.h>
+#include <linux/irq.h>
#include "wl1251.h"
#define SDIO_DEVICE_ID_TI_WL1251 0x9066
#endif
+struct wl1251_sdio {
+ struct sdio_func *func;
+ u32 elp_val;
+};
+
static struct wl12xx_platform_data *wl12xx_board_data;
static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
- return wl->if_priv;
+ struct wl1251_sdio *wl_sdio = wl->if_priv;
+ return wl_sdio->func;
}
static void wl1251_sdio_interrupt(struct sdio_func *func)
static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val)
{
int ret = 0;
- struct sdio_func *func = wl_to_func(wl);
-
+ struct wl1251_sdio *wl_sdio = wl->if_priv;
+ struct sdio_func *func = wl_sdio->func;
+
+ /*
+ * The hardware only supports RAW (read after write) access for
+ * reading, regular sdio_readb won't work here (it interprets
+ * the unused bits of CMD52 as write data even if we send read
+ * request).
+ */
sdio_claim_host(func);
- *val = sdio_readb(func, addr, &ret);
+ *val = sdio_readb_ext(func, addr, &ret, wl_sdio->elp_val);
sdio_release_host(func);
if (ret)
static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
{
int ret = 0;
- struct sdio_func *func = wl_to_func(wl);
+ struct wl1251_sdio *wl_sdio = wl->if_priv;
+ struct sdio_func *func = wl_sdio->func;
sdio_claim_host(func);
sdio_writeb(func, val, addr, &ret);
if (ret)
wl1251_error("sdio_writeb failed (%d)", ret);
+ else
+ wl_sdio->elp_val = val;
}
static void wl1251_sdio_reset(struct wl1251 *wl)
{
+ extern int sdio_reset_comm(struct mmc_card *card);
+ struct sdio_func *func = wl_to_func(wl);
+ int ret;
+
+ sdio_claim_host(func);
+ sdio_reset_comm(func->card);
+ ret = sdio_enable_func(func);
+ if (ret)
+ goto release;
+
+ sdio_set_block_size(func, 512);
+
+release:
+ sdio_release_host(func);
}
static void wl1251_sdio_enable_irq(struct wl1251 *wl)
sdio_release_host(func);
}
+/* Interrupts when using dedicated WLAN_IRQ pin */
+static irqreturn_t wl1251_line_irq(int irq, void *cookie)
+{
+ struct wl1251 *wl = cookie;
+
+ ieee80211_queue_work(wl->hw, &wl->irq_work);
+
+ return IRQ_HANDLED;
+}
+
+static void wl1251_enable_line_irq(struct wl1251 *wl)
+{
+ return enable_irq(wl->irq);
+}
+
+static void wl1251_disable_line_irq(struct wl1251 *wl)
+{
+ return disable_irq(wl->irq);
+}
+
static void wl1251_sdio_set_power(bool enable)
{
}
-static const struct wl1251_if_operations wl1251_sdio_ops = {
+static struct wl1251_if_operations wl1251_sdio_ops = {
.read = wl1251_sdio_read,
.write = wl1251_sdio_write,
.write_elp = wl1251_sdio_write_elp,
.read_elp = wl1251_sdio_read_elp,
.reset = wl1251_sdio_reset,
- .enable_irq = wl1251_sdio_enable_irq,
- .disable_irq = wl1251_sdio_disable_irq,
};
static int wl1251_platform_probe(struct platform_device *pdev)
int ret;
struct wl1251 *wl;
struct ieee80211_hw *hw;
+ struct wl1251_sdio *wl_sdio;
hw = wl1251_alloc_hw();
if (IS_ERR(hw))
wl = hw->priv;
+ wl_sdio = kzalloc(sizeof(*wl_sdio), GFP_KERNEL);
+ if (wl_sdio == NULL) {
+ ret = -ENOMEM;
+ goto out_free_hw;
+ }
+
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret)
goto release;
sdio_set_block_size(func, 512);
+ sdio_release_host(func);
SET_IEEE80211_DEV(hw, &func->dev);
- wl->if_priv = func;
+ wl_sdio->func = func;
+ wl->if_priv = wl_sdio;
wl->if_ops = &wl1251_sdio_ops;
wl->set_power = wl1251_sdio_set_power;
if (wl12xx_board_data != NULL) {
wl->set_power = wl12xx_board_data->set_power;
+ wl->irq = wl12xx_board_data->irq;
wl->use_eeprom = wl12xx_board_data->use_eeprom;
}
- sdio_release_host(func);
+ if (wl->irq) {
+ ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
+ if (ret < 0) {
+ wl1251_error("request_irq() failed: %d", ret);
+ goto disable;
+ }
+
+ set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+ disable_irq(wl->irq);
+
+ wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
+ wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
+
+ wl1251_info("using dedicated interrupt line");
+ } else {
+ wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
+ wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
+
+ wl1251_info("using SDIO interrupt");
+ }
+
ret = wl1251_init_ieee80211(wl);
if (ret)
- goto disable;
+ goto out_free_irq;
+
+ /* we can power it down now until it's started */
+ wl->set_power(0);
sdio_set_drvdata(func, wl);
return ret;
+out_free_irq:
+ if (wl->irq)
+ free_irq(wl->irq, wl);
disable:
sdio_claim_host(func);
sdio_disable_func(func);
release:
sdio_release_host(func);
+ kfree(wl_sdio);
+out_free_hw:
+ wl1251_free_hw(wl);
return ret;
}
static void __devexit wl1251_sdio_remove(struct sdio_func *func)
{
struct wl1251 *wl = sdio_get_drvdata(func);
+ struct wl1251_sdio *wl_sdio = wl->if_priv;
+ if (wl->irq)
+ free_irq(wl->irq, wl);
+ kfree(wl_sdio);
wl1251_free_hw(wl);
sdio_claim_host(func);