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Diffstat (limited to 'drivers/mmc/host/mmci.c')
-rw-r--r--drivers/mmc/host/mmci.c41
1 files changed, 27 insertions, 14 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 90d168ad03b..84c103a7ee1 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -2,6 +2,7 @@
* linux/drivers/mmc/host/mmci.c - ARM PrimeCell MMCI PL180/1 driver
*
* Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
+ * Copyright (C) 2010 ST-Ericsson AB.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -34,9 +35,6 @@
#define DRIVER_NAME "mmci-pl18x"
-#define DBG(host,fmt,args...) \
- pr_debug("%s: %s: " fmt, mmc_hostname(host->mmc), __func__ , args)
-
static unsigned int fmax = 515633;
/*
@@ -105,8 +103,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
void __iomem *base;
int blksz_bits;
- DBG(host, "blksz %04x blks %04x flags %08x\n",
- data->blksz, data->blocks, data->flags);
+ dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
+ data->blksz, data->blocks, data->flags);
host->data = data;
host->size = data->blksz;
@@ -155,7 +153,7 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
{
void __iomem *base = host->base;
- DBG(host, "op %02x arg %08x flags %08x\n",
+ dev_dbg(mmc_dev(host->mmc), "op %02x arg %08x flags %08x\n",
cmd->opcode, cmd->arg, cmd->flags);
if (readl(base + MMCICOMMAND) & MCI_CPSM_ENABLE) {
@@ -184,8 +182,20 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
{
if (status & MCI_DATABLOCKEND) {
host->data_xfered += data->blksz;
+#ifdef CONFIG_ARCH_U300
+ /*
+ * On the U300 some signal or other is
+ * badly routed so that a data write does
+ * not properly terminate with a MCI_DATAEND
+ * status flag. This quirk will make writes
+ * work again.
+ */
+ if (data->flags & MMC_DATA_WRITE)
+ status |= MCI_DATAEND;
+#endif
}
if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
+ dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ (status %08x)\n", status);
if (status & MCI_DATACRCFAIL)
data->error = -EILSEQ;
else if (status & MCI_DATATIMEOUT)
@@ -307,7 +317,7 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
status = readl(base + MMCISTATUS);
- DBG(host, "irq1 %08x\n", status);
+ dev_dbg(mmc_dev(host->mmc), "irq1 (pio) %08x\n", status);
do {
unsigned long flags;
@@ -401,7 +411,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
status &= readl(host->base + MMCIMASK0);
writel(status, host->base + MMCICLEAR);
- DBG(host, "irq0 %08x\n", status);
+ dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status);
data = host->data;
if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|
@@ -428,8 +438,8 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(host->mrq != NULL);
if (mrq->data && !is_power_of_2(mrq->data->blksz)) {
- printk(KERN_ERR "%s: Unsupported block size (%d bytes)\n",
- mmc_hostname(mmc), mrq->data->blksz);
+ dev_err(mmc_dev(mmc), "unsupported block size (%d bytes)\n",
+ mrq->data->blksz);
mrq->cmd->error = -EINVAL;
mmc_request_done(mmc, mrq);
return;
@@ -582,8 +592,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
host->hw_designer = amba_manf(dev);
host->hw_revision = amba_rev(dev);
- DBG(host, "designer ID = 0x%02x\n", host->hw_designer);
- DBG(host, "revision = 0x%01x\n", host->hw_revision);
+ dev_dbg(mmc_dev(mmc), "designer ID = 0x%02x\n", host->hw_designer);
+ dev_dbg(mmc_dev(mmc), "revision = 0x%01x\n", host->hw_revision);
host->clk = clk_get(&dev->dev, NULL);
if (IS_ERR(host->clk)) {
@@ -608,7 +618,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
if (ret < 0)
goto clk_disable;
host->mclk = clk_get_rate(host->clk);
- DBG(host, "eventual mclk rate: %u Hz\n", host->mclk);
+ dev_dbg(mmc_dev(mmc), "eventual mclk rate: %u Hz\n",
+ host->mclk);
}
host->base = ioremap(dev->res.start, resource_size(&dev->res));
if (!host->base) {
@@ -619,6 +630,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
mmc->ops = &mmci_ops;
mmc->f_min = (host->mclk + 511) / 512;
mmc->f_max = min(host->mclk, fmax);
+ dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
+
#ifdef CONFIG_REGULATOR
/* If we're using the regulator framework, try to fetch a regulator */
host->vcc = regulator_get(&dev->dev, "vmmc");
@@ -712,7 +725,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
mmc_add_host(mmc);
- printk(KERN_INFO "%s: MMCI rev %x cfg %02x at 0x%016llx irq %d,%d\n",
+ dev_info(&dev->dev, "%s: MMCI rev %x cfg %02x at 0x%016llx irq %d,%d\n",
mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
(unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);