A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge "mailbox: msm_qmp: Add msgram readback"

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qctecmdr 2020-09-09 06:09:26 -07:00 • committed by Gerrit - the friendly Code Review server
commit 0acb956082
1 changed files with 4 additions and 1 deletions
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5
drivers/mailbox/msm_qmp.c
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@ -380,6 +380,7 @@ static int qmp_send_data(struct mbox_chan *chan, void *data)
struct qmp_pkt *pkt = (struct qmp_pkt *)data;
void __iomem *addr;
unsigned long flags;
u32 size;
int i;
if (!mbox || !data || mbox->local_state != CHANNEL_CONNECTED)
@ -401,13 +402,15 @@ static int qmp_send_data(struct mbox_chan *chan, void *data)
memcpy32_toio(addr + sizeof(pkt->size), pkt->data, pkt->size);
iowrite32(pkt->size, addr);
/* readback to ensure write reflects in msgram */
size = ioread32(addr);
mbox->tx_sent = true;
for (i = 0; i < mbox->ctrl.num_chans; i++) {
if (chan == &mbox->ctrl.chans[i])
mbox->idx_in_flight = i;
}
QMP_INFO(mdev->ilc, "Copied buffer to msgram sz:%d i:%d\n",
pkt->size, mbox->idx_in_flight);
size, mbox->idx_in_flight);
send_irq(mdev);
qmp_schedule_tx_timeout(mbox);
spin_unlock_irqrestore(&mbox->tx_lock, flags);