Signed-off-by: Kalle Valo <[email protected]>
---
drivers/net/wireless/ath/ath10k/sdio.c | 85 +++++++++++++++++++-------------
1 file changed, 50 insertions(+), 35 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/sdio.c
b/drivers/net/wireless/ath/ath10k/sdio.c
index c7bc86e5063f..56728d44dd12 100644
--- a/drivers/net/wireless/ath/ath10k/sdio.c
+++ b/drivers/net/wireless/ath/ath10k/sdio.c
@@ -287,6 +287,39 @@ static int ath10k_sdio_write32(struct ath10k *ar, u32
addr, u32 val)
return ret;
}
+static int ath10k_sdio_writesb32(struct ath10k *ar, u32 addr, u32 val)
+{
+ struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar);
+ struct sdio_func *func = ar_sdio->func;
+ __le32 *buf;
+ int ret;
+
+ buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ *buf = cpu_to_le32(val);
+
+ sdio_claim_host(func);
+
+ ret = sdio_writesb(func, addr, buf, sizeof(*buf));
+ if (ret) {
+ ath10k_warn(ar, "failed to write value 0x%x to fixed sb address
0x%x: %d\n",
+ val, addr, ret);
+ goto out;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_SDIO, "sdio writesb32 addr 0x%x val 0x%x\n",
+ addr, val);
+
+out:
+ sdio_release_host(func);
+
+ kfree(buf);
+
+ return ret;
+}
+
static int ath10k_sdio_read32(struct ath10k *ar, u32 addr, u32 *val)
{
struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar);
@@ -709,21 +742,16 @@ static int ath10k_sdio_mbox_proc_err_intr(struct ath10k
*ar)
{
struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar);
struct ath10k_sdio_irq_data *irq_data = &ar_sdio->irq_data;
- u8 error_int_status, *reg_buf;
+ u8 error_int_status;
int ret;
- reg_buf = kzalloc(4, GFP_KERNEL);
- if (!reg_buf)
- return -ENOMEM;
-
ath10k_dbg(ar, ATH10K_DBG_SDIO, "sdio error interrupt\n");
error_int_status = irq_data->irq_proc_reg->error_int_status & 0x0F;
if (!error_int_status) {
ath10k_warn(ar, "invalid error interrupt status: 0x%x\n",
error_int_status);
- ret = -EIO;
- goto out;
+ return -EIO;
}
ath10k_dbg(ar, ATH10K_DBG_SDIO,
@@ -744,29 +772,25 @@ static int ath10k_sdio_mbox_proc_err_intr(struct ath10k
*ar)
/* Clear the interrupt */
irq_data->irq_proc_reg->error_int_status &= ~error_int_status;
+ /* FIXME: is this correct? originally it was "reg_buf[0] =
+ * error_int_status" and not sure if this is the same anymore */
/* set W1C value to clear the interrupt, this hits the register first */
- reg_buf[0] = error_int_status;
-
- ret = ath10k_sdio_read_write_sync(ar,
- MBOX_ERROR_INT_STATUS_ADDRESS,
- reg_buf, 4, HIF_WR_SYNC_BYTE_FIX);
+ ret = ath10k_sdio_writesb32(ar, MBOX_ERROR_INT_STATUS_ADDRESS,
+ error_int_status);
if (ret) {
ath10k_warn(ar, "unable to write to error int status address:
%d\n",
ret);
- goto out;
+ return ret;
}
-out:
- kfree(reg_buf);
-
- return ret;
+ return 0;
}
static int ath10k_sdio_mbox_proc_cpu_intr(struct ath10k *ar)
{
struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar);
struct ath10k_sdio_irq_data *irq_data = &ar_sdio->irq_data;
- u8 cpu_int_status, *reg_buf;
+ u8 cpu_int_status;
int ret;
mutex_lock(&irq_data->mtx);
@@ -781,32 +805,23 @@ static int ath10k_sdio_mbox_proc_cpu_intr(struct ath10k
*ar)
/* Clear the interrupt */
irq_data->irq_proc_reg->cpu_int_status &= ~cpu_int_status;
- /* Set up the register transfer buffer to hit the register 4 times ,
+ /* FIXME: is this correct? originally it was "reg_buf[0] =
+ * cpu_int_status" and not sure if this is the same anymore */
+ /* Set up the register transfer buffer to hit the register 4 times,
* this is done to make the access 4-byte aligned to mitigate issues
* with host bus interconnects that restrict bus transfer lengths to
* be a multiple of 4-bytes.
+ *
+ * Set W1C value to clear the interrupt, this hits the register first.
*/
- reg_buf = kzalloc(4, GFP_KERNEL);
- if (!reg_buf) {
- ret = -ENOMEM;
- goto out;
- }
-
- /* set W1C value to clear the interrupt, this hits the register first */
- reg_buf[0] = cpu_int_status;
-
- ret = ath10k_sdio_read_write_sync(ar,
- MBOX_CPU_INT_STATUS_ADDRESS,
- reg_buf, 4, HIF_WR_SYNC_BYTE_FIX);
+ ret = ath10k_sdio_writesb32(ar, MBOX_CPU_INT_STATUS_ADDRESS,
+ cpu_int_status);
if (ret) {
ath10k_warn(ar, "unable to write to cpu interrupt status
address: %d\n",
ret);
- goto out_free;
+ goto out;
}
-out_free:
- kfree(reg_buf);
-
out:
mutex_unlock(&irq_data->mtx);
return ret;
