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>

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 4941e06..5da5bea 100644 (file)
--- 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 },
 };