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mmc: mmci: expand startbiterr to irqmask and error check

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All variants don't pretend to have a startbiterr.
-While data error check, if status register return an error
(like  MCI_DATACRCFAIL) we must avoid to check MCI_STARTBITERR
(if not desired).
-expand start_err to MCI_IRQENABLE to avoid to set this bit by default.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ludovic Barre 2018-10-08 14:08:44 +02:00 committed by Ulf Hansson
parent c931d495cd
commit daf9713c5e
2 changed files with 19 additions and 14 deletions
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27
drivers/mmc/host/mmci.c
View File

@ -1042,14 +1042,18 @@ static void
mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
unsigned int status)
{
unsigned int status_err;
/* Make sure we have data to handle */
if (!data)
return;
/* First check for errors */
if (status & (MCI_DATACRCFAIL | MCI_DATATIMEOUT |
host->variant->start_err |
MCI_TXUNDERRUN | MCI_RXOVERRUN)) {
status_err = status & (host->variant->start_err |
MCI_DATACRCFAIL | MCI_DATATIMEOUT |
MCI_TXUNDERRUN | MCI_RXOVERRUN);
if (status_err) {
u32 remain, success;
/* Terminate the DMA transfer */
@ -1066,18 +1070,18 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
success = data->blksz * data->blocks - remain;
dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ, status 0x%08x at 0x%08x\n",
status, success);
if (status & MCI_DATACRCFAIL) {
status_err, success);
if (status_err & MCI_DATACRCFAIL) {
/* Last block was not successful */
success -= 1;
data->error = -EILSEQ;
} else if (status & MCI_DATATIMEOUT) {
} else if (status_err & MCI_DATATIMEOUT) {
data->error = -ETIMEDOUT;
} else if (status & MCI_STARTBITERR) {
} else if (status_err & MCI_STARTBITERR) {
data->error = -ECOMM;
} else if (status & MCI_TXUNDERRUN) {
} else if (status_err & MCI_TXUNDERRUN) {
data->error = -EIO;
} else if (status & MCI_RXOVERRUN) {
} else if (status_err & MCI_RXOVERRUN) {
if (success > host->variant->fifosize)
success -= host->variant->fifosize;
else
@ -1918,7 +1922,7 @@ static int mmci_probe(struct amba_device *dev,
goto clk_disable;
}
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
writel(MCI_IRQENABLE | variant->start_err, host->base + MMCIMASK0);
amba_set_drvdata(dev, mmc);
@ -2005,7 +2009,8 @@ static void mmci_restore(struct mmci_host *host)
writel(host->datactrl_reg, host->base + MMCIDATACTRL);
writel(host->pwr_reg, host->base + MMCIPOWER);
}
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
writel(MCI_IRQENABLE | host->variant->start_err,
host->base + MMCIMASK0);
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);

6
drivers/mmc/host/mmci.h
View File

@ -181,9 +181,9 @@
#define MMCIFIFO 0x080 /* to 0x0bc */
#define MCI_IRQENABLE \
(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \
MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \
MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_STARTBITERRMASK)
(MCI_CMDCRCFAILMASK | MCI_DATACRCFAILMASK | MCI_CMDTIMEOUTMASK | \
MCI_DATATIMEOUTMASK | MCI_TXUNDERRUNMASK | MCI_RXOVERRUNMASK | \
MCI_CMDRESPENDMASK | MCI_CMDSENTMASK)
/* These interrupts are directed to IRQ1 when two IRQ lines are available */
#define MCI_IRQ1MASK \