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path: root/drivers/net/wireless/ti/wlcore/sdio.c
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Diffstat (limited to 'drivers/net/wireless/ti/wlcore/sdio.c')
-rw-r--r--drivers/net/wireless/ti/wlcore/sdio.c123
1 files changed, 79 insertions, 44 deletions
diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 0a72347cfc4..d3dd7bfdf3f 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -25,6 +25,7 @@
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
+#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
@@ -32,6 +33,7 @@
#include <linux/gpio.h>
#include <linux/wl12xx.h>
#include <linux/pm_runtime.h>
+#include <linux/printk.h>
#include "wlcore.h"
#include "wl12xx_80211.h"
@@ -45,12 +47,14 @@
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif
+static bool dump = false;
+
struct wl12xx_sdio_glue {
struct device *dev;
struct platform_device *core;
};
-static const struct sdio_device_id wl1271_devices[] __devinitconst = {
+static const struct sdio_device_id wl1271_devices[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
{}
};
@@ -67,8 +71,8 @@ static void wl1271_sdio_set_block_size(struct device *child,
sdio_release_host(func);
}
-static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
- size_t len, bool fixed)
+static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
+ void *buf, size_t len, bool fixed)
{
int ret;
struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
@@ -76,6 +80,13 @@ static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
sdio_claim_host(func);
+ if (unlikely(dump)) {
+ printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
+ print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
+ DUMP_PREFIX_OFFSET, 16, 1,
+ buf, len, false);
+ }
+
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
@@ -92,12 +103,14 @@ static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
sdio_release_host(func);
- if (ret)
+ if (WARN_ON(ret))
dev_err(child->parent, "sdio read failed (%d)\n", ret);
+
+ return ret;
}
-static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
- size_t len, bool fixed)
+static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
+ void *buf, size_t len, bool fixed)
{
int ret;
struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
@@ -105,6 +118,13 @@ static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
sdio_claim_host(func);
+ if (unlikely(dump)) {
+ printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
+ print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
+ DUMP_PREFIX_OFFSET, 16, 1,
+ buf, len, false);
+ }
+
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
@@ -121,25 +141,30 @@ static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
sdio_release_host(func);
- if (ret)
+ if (WARN_ON(ret))
dev_err(child->parent, "sdio write failed (%d)\n", ret);
+
+ return ret;
}
static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
{
int ret;
struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ struct mmc_card *card = func->card;
- /* If enabled, tell runtime PM not to power off the card */
- if (pm_runtime_enabled(&func->dev)) {
- ret = pm_runtime_get_sync(&func->dev);
- if (ret < 0)
- goto out;
- } else {
- /* Runtime PM is disabled: power up the card manually */
- ret = mmc_power_restore_host(func->card->host);
- if (ret < 0)
+ ret = pm_runtime_get_sync(&card->dev);
+ if (ret) {
+ /*
+ * Runtime PM might be temporarily disabled, or the device
+ * might have a positive reference counter. Make sure it is
+ * really powered on.
+ */
+ ret = mmc_power_restore_host(card->host);
+ if (ret < 0) {
+ pm_runtime_put_sync(&card->dev);
goto out;
+ }
}
sdio_claim_host(func);
@@ -154,20 +179,21 @@ static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
{
int ret;
struct sdio_func *func = dev_to_sdio_func(glue->dev);
+ struct mmc_card *card = func->card;
sdio_claim_host(func);
sdio_disable_func(func);
sdio_release_host(func);
- /* Power off the card manually, even if runtime PM is enabled. */
- ret = mmc_power_save_host(func->card->host);
+ /* Power off the card manually in case it wasn't powered off above */
+ ret = mmc_power_save_host(card->host);
if (ret < 0)
- return ret;
+ goto out;
- /* If enabled, let runtime PM know the card is powered off */
- if (pm_runtime_enabled(&func->dev))
- ret = pm_runtime_put_sync(&func->dev);
+ /* Let runtime PM know the card is powered off */
+ pm_runtime_put_sync(&card->dev);
+out:
return ret;
}
@@ -188,19 +214,23 @@ static struct wl1271_if_operations sdio_ops = {
.set_block_size = wl1271_sdio_set_block_size,
};
-static int __devinit wl1271_probe(struct sdio_func *func,
+static int wl1271_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
- struct wl12xx_platform_data *wlan_data;
+ struct wlcore_platdev_data pdev_data;
struct wl12xx_sdio_glue *glue;
struct resource res[1];
mmc_pm_flag_t mmcflags;
int ret = -ENOMEM;
+ const char *chip_family;
/* We are only able to handle the wlan function */
if (func->num != 0x02)
return -ENODEV;
+ memset(&pdev_data, 0x00, sizeof(pdev_data));
+ pdev_data.if_ops = &sdio_ops;
+
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&func->dev, "can't allocate glue\n");
@@ -215,9 +245,9 @@ static int __devinit wl1271_probe(struct sdio_func *func,
/* 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);
+ pdev_data.pdata = wl12xx_get_platform_data();
+ if (IS_ERR(pdev_data.pdata)) {
+ ret = PTR_ERR(pdev_data.pdata);
dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
goto out_free_glue;
}
@@ -227,16 +257,25 @@ static int __devinit wl1271_probe(struct sdio_func *func,
dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
if (mmcflags & MMC_PM_KEEP_POWER)
- wlan_data->pwr_in_suspend = true;
-
- wlan_data->ops = &sdio_ops;
+ pdev_data.pdata->pwr_in_suspend = true;
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);
- glue->core = platform_device_alloc("wl12xx", -1);
+ /*
+ * Due to a hardware bug, we can't differentiate wl18xx from
+ * wl12xx, because both report the same device ID. The only
+ * way to differentiate is by checking the SDIO revision,
+ * which is 3.00 on the wl18xx chips.
+ */
+ if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
+ chip_family = "wl18xx";
+ else
+ chip_family = "wl12xx";
+
+ glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
if (!glue->core) {
dev_err(glue->dev, "can't allocate platform_device");
ret = -ENOMEM;
@@ -247,7 +286,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
memset(res, 0x00, sizeof(res));
- res[0].start = wlan_data->irq;
+ res[0].start = pdev_data.pdata->irq;
res[0].flags = IORESOURCE_IRQ;
res[0].name = "irq";
@@ -257,8 +296,8 @@ static int __devinit wl1271_probe(struct sdio_func *func,
goto out_dev_put;
}
- ret = platform_device_add_data(glue->core, wlan_data,
- sizeof(*wlan_data));
+ ret = platform_device_add_data(glue->core, &pdev_data,
+ sizeof(pdev_data));
if (ret) {
dev_err(glue->dev, "can't add platform data\n");
goto out_dev_put;
@@ -281,15 +320,14 @@ out:
return ret;
}
-static void __devexit wl1271_remove(struct sdio_func *func)
+static void wl1271_remove(struct sdio_func *func)
{
struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
/* Undo decrement done above in wl1271_probe */
pm_runtime_get_noresume(&func->dev);
- platform_device_del(glue->core);
- platform_device_put(glue->core);
+ platform_device_unregister(glue->core);
kfree(glue);
}
@@ -346,7 +384,7 @@ static struct sdio_driver wl1271_sdio_driver = {
.name = "wl1271_sdio",
.id_table = wl1271_devices,
.probe = wl1271_probe,
- .remove = __devexit_p(wl1271_remove),
+ .remove = wl1271_remove,
#ifdef CONFIG_PM
.drv = {
.pm = &wl1271_sdio_pm_ops,
@@ -367,12 +405,9 @@ static void __exit wl1271_exit(void)
module_init(wl1271_init);
module_exit(wl1271_exit);
+module_param(dump, bool, S_IRUSR | S_IWUSR);
+MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
+
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
-MODULE_FIRMWARE(WL127X_FW_NAME_SINGLE);
-MODULE_FIRMWARE(WL127X_FW_NAME_MULTI);
-MODULE_FIRMWARE(WL127X_PLT_FW_NAME);
-MODULE_FIRMWARE(WL128X_FW_NAME_SINGLE);
-MODULE_FIRMWARE(WL128X_FW_NAME_MULTI);
-MODULE_FIRMWARE(WL128X_PLT_FW_NAME);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 13:19:43 +0000