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Subject[RFC/PATCH 02/13] net: wl12xx: sdio: add a context structure
Date
this will help re-structuring the driver so
that we avoid all duplications which are
currently on this driver.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
drivers/net/wireless/wl12xx/sdio.c | 78 +++++++++++++++++++++++++-----------
1 files changed, 54 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 1268efe..fe775d3 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -45,20 +45,25 @@
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif

+struct wl12xx_sdio_glue {
+ struct device *dev;
+ struct wl1271 *wl;
+};
+
static const struct sdio_device_id wl1271_devices[] __devinitconst = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
{}
};
MODULE_DEVICE_TABLE(sdio, wl1271_devices);

-static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
+static inline struct wl12xx_sdio_glue *wl_to_glue(struct wl1271 *wl)
{
return wl->if_priv;
}

static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
{
- return &(wl_to_func(wl)->dev);
+ return wl_to_glue(wl)->dev;
}

static irqreturn_t wl1271_hardirq(int irq, void *cookie)
@@ -101,8 +106,9 @@ static void wl1271_sdio_init(struct wl1271 *wl)
static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
size_t len, bool fixed)
{
- int ret;
- struct sdio_func *func = wl_to_func(wl);
+ struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
+ struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ int ret;

if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
@@ -126,8 +132,9 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
size_t len, bool fixed)
{
- int ret;
- struct sdio_func *func = wl_to_func(wl);
+ struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
+ struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ int ret;

if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
@@ -150,8 +157,9 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,

static int wl1271_sdio_power_on(struct wl1271 *wl)
{
- struct sdio_func *func = wl_to_func(wl);
- int ret;
+ struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
+ struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ int ret;

/* Make sure the card will not be powered off by runtime PM */
ret = pm_runtime_get_sync(&func->dev);
@@ -172,8 +180,9 @@ out:

static int wl1271_sdio_power_off(struct wl1271 *wl)
{
- struct sdio_func *func = wl_to_func(wl);
- int ret;
+ struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
+ struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ int ret;

sdio_disable_func(func);
sdio_release_host(func);
@@ -209,24 +218,39 @@ static struct wl1271_if_operations sdio_ops = {
static int __devinit wl1271_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
- struct ieee80211_hw *hw;
const struct wl12xx_platform_data *wlan_data;
- struct wl1271 *wl;
- int ret;
+
+ struct wl12xx_sdio_glue *glue;
+ struct ieee80211_hw *hw;
+ struct wl1271 *wl;
+
+ int ret = -ENOMEM;

/* We are only able to handle the wlan function */
if (func->num != 0x02)
return -ENODEV;

+ glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ if (!glue) {
+ dev_err(&func->dev, "not enough memory\n");
+ goto err0;
+ }
+
hw = wl1271_alloc_hw();
- if (IS_ERR(hw))
- return PTR_ERR(hw);
+ if (IS_ERR(hw)) {
+ dev_err(&func->dev, "can't allocate hw\n");
+ ret = PTR_ERR(hw);
+ goto err1;
+ }

wl = hw->priv;

- wl->if_priv = func;
+ wl->if_priv = glue;
wl->if_ops = &sdio_ops;

+ glue->dev = &func->dev;
+ glue->wl = wl;
+
/* Grab access to FN0 for ELP reg. */
func->card->quirks |= MMC_QUIRK_LENIENT_FN0;

@@ -234,7 +258,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
if (IS_ERR(wlan_data)) {
ret = PTR_ERR(wlan_data);
wl1271_error("missing wlan platform data: %d", ret);
- goto out_free;
+ goto err2;
}

wl->irq = wlan_data->irq;
@@ -245,20 +269,20 @@ static int __devinit wl1271_probe(struct sdio_func *func,
DRIVER_NAME, wl);
if (ret < 0) {
wl1271_error("request_irq() failed: %d", ret);
- goto out_free;
+ goto err2;
}

disable_irq(wl->irq);

ret = wl1271_init_ieee80211(wl);
if (ret)
- goto out_irq;
+ goto err3;

ret = wl1271_register_hw(wl);
if (ret)
- goto out_irq;
+ goto err3;

- sdio_set_drvdata(func, wl);
+ sdio_set_drvdata(func, glue);

/* Tell PM core that we don't need the card to be powered now */
pm_runtime_put_noidle(&func->dev);
@@ -267,18 +291,23 @@ static int __devinit wl1271_probe(struct sdio_func *func,

return 0;

- out_irq:
+err3:
free_irq(wl->irq, wl);

- out_free:
+err2:
wl1271_free_hw(wl);

+err1:
+ kfree(glue);
+
+err0:
return ret;
}

static void __devexit wl1271_remove(struct sdio_func *func)
{
- struct wl1271 *wl = sdio_get_drvdata(func);
+ struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
+ struct wl1271 *wl = glue->wl;

/* Undo decrement done above in wl1271_probe */
pm_runtime_get_noresume(&func->dev);
@@ -286,6 +315,7 @@ static void __devexit wl1271_remove(struct sdio_func *func)
wl1271_unregister_hw(wl);
free_irq(wl->irq, wl);
wl1271_free_hw(wl);
+ kfree(glue);
}

static int wl1271_suspend(struct device *dev)
--
1.7.4.1.343.ga91df


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