libertas: implement function init/shutdown commands for SD8688
SD8688 is a WLAN/Bluetooth combo chip and both functions are supported
in a single firmware image. FUNC_INIT and FUNC_SHUTDOWN commands are
implemented to utilize the multiple function feature.
When SD8688 card is inserted, the firmware image should be downloaded
only once through either WLAN function (Libertas driver) or Bluetooth
function (Bluetooth driver).
This patch adds function init/shutdown for SD8688 WLAN function only.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index e998c12..478d766 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -61,6 +61,7 @@
int model;
const char *helper;
const char *firmware;
+ struct if_sdio_card *card;
};
static struct if_sdio_model if_sdio_models[] = {
@@ -69,18 +70,21 @@
.model = IF_SDIO_MODEL_8385,
.helper = "sd8385_helper.bin",
.firmware = "sd8385.bin",
+ .card = NULL,
},
{
/* 8686 */
.model = IF_SDIO_MODEL_8686,
.helper = "sd8686_helper.bin",
.firmware = "sd8686.bin",
+ .card = NULL,
},
{
/* 8688 */
.model = IF_SDIO_MODEL_8688,
.helper = "sd8688_helper.bin",
.firmware = "sd8688.bin",
+ .card = NULL,
},
};
@@ -539,7 +543,6 @@
ret = 0;
release:
- sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
sdio_release_host(card->func);
kfree(chunk_buffer);
release_fw:
@@ -675,7 +678,6 @@
ret = 0;
release:
- sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
sdio_release_host(card->func);
kfree(chunk_buffer);
release_fw:
@@ -718,6 +720,9 @@
goto out;
success:
+ sdio_claim_host(card->func);
+ sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
+ sdio_release_host(card->func);
ret = 0;
out:
@@ -903,6 +908,8 @@
goto free;
}
+ if_sdio_models[i].card = card;
+
card->helper = if_sdio_models[i].helper;
card->firmware = if_sdio_models[i].firmware;
@@ -985,6 +992,12 @@
if (ret)
goto reclaim;
+ /*
+ * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
+ */
+ priv->fn_init_required =
+ (card->model == IF_SDIO_MODEL_8688) ? 1 : 0;
+
ret = lbs_start_card(priv);
if (ret)
goto err_activate_card;
@@ -1025,23 +1038,30 @@
{
struct if_sdio_card *card;
struct if_sdio_packet *packet;
+ int ret;
lbs_deb_enter(LBS_DEB_SDIO);
card = sdio_get_drvdata(func);
+ lbs_stop_card(card->priv);
+
card->priv->surpriseremoved = 1;
lbs_deb_sdio("call remove card\n");
- lbs_stop_card(card->priv);
lbs_remove_card(card->priv);
flush_workqueue(card->workqueue);
destroy_workqueue(card->workqueue);
sdio_claim_host(func);
+
+ /* Disable interrupts */
+ sdio_writeb(func, 0x00, IF_SDIO_H_INT_MASK, &ret);
+
sdio_release_irq(func);
sdio_disable_func(func);
+
sdio_release_host(func);
while (card->packets) {
@@ -1084,8 +1104,23 @@
static void __exit if_sdio_exit_module(void)
{
+ int i;
+ struct if_sdio_card *card;
+
lbs_deb_enter(LBS_DEB_SDIO);
+ for (i = 0; i < ARRAY_SIZE(if_sdio_models); i++) {
+ card = if_sdio_models[i].card;
+
+ /*
+ * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
+ * multiple functions
+ */
+ if (card && card->priv)
+ card->priv->fn_shutdown_required =
+ (card->model == IF_SDIO_MODEL_8688) ? 1 : 0;
+ }
+
sdio_unregister_driver(&if_sdio_driver);
lbs_deb_leave(LBS_DEB_SDIO);