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path: root/drivers/bluetooth/btmrvl_sdio.c
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Diffstat (limited to 'drivers/bluetooth/btmrvl_sdio.c')
-rw-r--r--drivers/bluetooth/btmrvl_sdio.c52
1 files changed, 51 insertions, 1 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 7883793717fd..9dedca516ff5 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -64,6 +64,7 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
.io_port_0 = 0x00,
.io_port_1 = 0x01,
.io_port_2 = 0x02,
+ .int_read_to_clear = false,
};
static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
.cfg = 0x00,
@@ -80,6 +81,7 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
.io_port_0 = 0x78,
.io_port_1 = 0x79,
.io_port_2 = 0x7a,
+ .int_read_to_clear = false,
};
static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = {
@@ -97,6 +99,9 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = {
.io_port_0 = 0xd8,
.io_port_1 = 0xd9,
.io_port_2 = 0xda,
+ .int_read_to_clear = true,
+ .host_int_rsr = 0x01,
+ .card_misc_cfg = 0xcc,
};
static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
@@ -667,6 +672,23 @@ static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
return 0;
}
+static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
+{
+ struct btmrvl_adapter *adapter = card->priv->adapter;
+ int ret;
+
+ ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
+ if (ret) {
+ BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
+ return ret;
+ }
+
+ *ireg = adapter->hw_regs[card->reg->host_intstatus];
+ BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
+
+ return 0;
+}
+
static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
{
int ret;
@@ -714,7 +736,11 @@ static void btmrvl_sdio_interrupt(struct sdio_func *func)
priv = card->priv;
- ret = btmrvl_sdio_write_to_clear(card, &ireg);
+ if (card->reg->int_read_to_clear)
+ ret = btmrvl_sdio_read_to_clear(card, &ireg);
+ else
+ ret = btmrvl_sdio_write_to_clear(card, &ireg);
+
if (ret)
return;
@@ -788,6 +814,30 @@ static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
+ if (card->reg->int_read_to_clear) {
+ reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ }
+
sdio_set_drvdata(func, card);
sdio_release_host(func);