[PATCH 10/18] MMC: OMAP: General cleanup for MMC multislot support

Carlos Aguiar
2008-03-26T20:15:29Z

From: Juha Yrjola <juha.yrjola@solidboot.com>

General code cleanup, modifications at some dev_* functions and
other hacks at mmc_omap_irq() for MMC multislot support.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/mmc/host/omap.c | 46 +++++++++++++++++++++++++++++-----------------
1 files changed, 29 insertions(+), 17 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index dbf831f..7858902 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -547,11 +547,12 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
u16 status;
int end_command;
int end_transfer;
- int transfer_error;
+ int transfer_error, cmd_error;

if (host->cmd == NULL && host->data == NULL) {
status = OMAP_MMC_READ(host, STAT);
- dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status);
+ dev_info(mmc_dev(host->slots[0]->mmc),
+ "Spurious IRQ 0x%04x\n", status);
if (status != 0) {
OMAP_MMC_WRITE(host, STAT, status);
OMAP_MMC_WRITE(host, IE, 0);
@@ -562,12 +563,19 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
end_command = 0;
end_transfer = 0;
transfer_error = 0;
+ cmd_error = 0;

while ((status = OMAP_MMC_READ(host, STAT)) != 0) {
+ int cmd;
+
OMAP_MMC_WRITE(host, STAT, status);
+ if (host->cmd != NULL)
+ cmd = host->cmd->opcode;
+ else
+ cmd = -1;
#ifdef CONFIG_MMC_DEBUG
dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ",
- status, host->cmd != NULL ? host->cmd->opcode : -1);
+ status, cmd);
mmc_omap_report_irq(status);
printk("\n");
#endif
@@ -579,12 +587,12 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
mmc_omap_xfer_data(host, 1);
}

- if (status & OMAP_MMC_STAT_END_OF_DATA) {
+ if (status & OMAP_MMC_STAT_END_OF_DATA)
end_transfer = 1;
- }

if (status & OMAP_MMC_STAT_DATA_TOUT) {
- dev_dbg(mmc_dev(host->mmc), "data timeout\n");
+ dev_dbg(mmc_dev(host->mmc), "data timeout (CMD%d)\n",
+ cmd);
if (host->data) {
host->data->error = -ETIMEDOUT;
transfer_error = 1;
@@ -608,12 +616,14 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
if (host->cmd) {
struct mmc_omap_slot *slot =
host->current_slot;
- if (!mmc_omap_cover_is_open(slot))
+ if (slot == NULL ||
+ !mmc_omap_cover_is_open(slot))
dev_err(mmc_dev(host->mmc),
- "command timeout, CMD %d\n",
- host->cmd->opcode);
+ "command timeout (CMD%d)\n",
+ cmd);
host->cmd->error = -ETIMEDOUT;
end_command = 1;
+ cmd_error = 1;
}
}

@@ -621,9 +631,10 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
if (host->cmd) {
dev_err(mmc_dev(host->mmc),
"command CRC error (CMD%d, arg 0x%08x)\n",
- host->cmd->opcode, host->cmd->arg);
+ cmd, host->cmd->arg);
host->cmd->error = -EILSEQ;
end_command = 1;
+ cmd_error = 1;
} else
dev_err(mmc_dev(host->mmc),
"command CRC error without cmd?\n");
@@ -632,13 +643,13 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
if (status & OMAP_MMC_STAT_CARD_ERR) {
dev_dbg(mmc_dev(host->mmc),
"ignoring card status error (CMD%d)\n",
- host->cmd->opcode);
+ cmd);
end_command = 1;
}

/*
* NOTE: On 1610 the END_OF_CMD may come too early when
- * starting a write
+ * starting a write
*/
if ((status & OMAP_MMC_STAT_END_OF_CMD) &&
(!(status & OMAP_MMC_STAT_A_EMPTY))) {
@@ -646,13 +657,14 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
}
}

- if (end_command) {
+ if (end_command)
mmc_omap_cmd_done(host, host->cmd);
+ if (host->data != NULL) {
+ if (transfer_error)
+ mmc_omap_xfer_done(host, host->data);
+ else if (end_transfer)
+ mmc_omap_end_of_data(host, host->data);
}
- if (transfer_error)
- mmc_omap_xfer_done(host, host->data);
- else if (end_transfer)
- mmc_omap_end_of_data(host, host->data);

return IRQ_HANDLED;
}
-- 1.5.3.GIT