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authorPhilippe Langlais <philippe.langlais@stericsson.com>2011-03-25 08:51:52 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-05-26 10:33:35 +0100
commit1784b157c89cd2b5e6a3840abfdab6ed51f31d86 (patch)
tree22d0a9425f5cc2881f10fd76846ca8960d56fe8f /drivers/mmc
parent729303191ef4bd5df4c5e9ffca62268758928b2c (diff)
downloadop-kernel-dev-1784b157c89cd2b5e6a3840abfdab6ed51f31d86.zip
op-kernel-dev-1784b157c89cd2b5e6a3840abfdab6ed51f31d86.tar.gz
ARM: 6832/1: mmci: support for ST-Ericsson db8500v2
ST-Ericsson modified ARM PrimeCell PL180 block has not got an updated corresponding amba-id, althought the IP block has changed in db8500v2. The change was done to the datactrl register. Using the overrided subversion ID, account for this. Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/mmci.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 4941e06..5da5bea0 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -51,6 +51,7 @@ static unsigned int fmax = 515633;
* is asserted (likewise for RX)
* @sdio: variant supports SDIO
* @st_clkdiv: true if using a ST-specific clock divider algorithm
+ * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
*/
struct variant_data {
unsigned int clkreg;
@@ -60,6 +61,7 @@ struct variant_data {
unsigned int fifohalfsize;
bool sdio;
bool st_clkdiv;
+ bool blksz_datactrl16;
};
static struct variant_data variant_arm = {
@@ -92,6 +94,17 @@ static struct variant_data variant_ux500 = {
.st_clkdiv = true,
};
+static struct variant_data variant_ux500v2 = {
+ .fifosize = 30 * 4,
+ .fifohalfsize = 8 * 4,
+ .clkreg = MCI_CLK_ENABLE,
+ .clkreg_enable = MCI_ST_UX500_HWFCEN,
+ .datalength_bits = 24,
+ .sdio = true,
+ .st_clkdiv = true,
+ .blksz_datactrl16 = true,
+};
+
/*
* This must be called with host->lock held
*/
@@ -465,7 +478,10 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
blksz_bits = ffs(data->blksz) - 1;
BUG_ON(1 << blksz_bits != data->blksz);
- datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
+ if (variant->blksz_datactrl16)
+ datactrl = MCI_DPSM_ENABLE | (data->blksz << 16);
+ else
+ datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
if (data->flags & MMC_DATA_READ)
datactrl |= MCI_DPSM_DIRECTION;
@@ -1311,9 +1327,14 @@ static struct amba_id mmci_ids[] = {
},
{
.id = 0x00480180,
- .mask = 0x00ffffff,
+ .mask = 0xf0ffffff,
.data = &variant_ux500,
},
+ {
+ .id = 0x10480180,
+ .mask = 0xf0ffffff,
+ .data = &variant_ux500v2,
+ },
{ 0, 0 },
};
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