mfd: tmio_mmc hardware abstraction for CNF area

This patch abstracts out the CNF area code from tmio_mmc which
is not present in all hardware that can use this driver. This
is required so that we can support non-toshiba based hardware.

ASIC3 support by Philipp Zabel

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 32 insertions, 8 deletions

diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index e22128c3e9a8..95c1e6bd1729 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -80,6 +80,7 @@ struct asic3 {
         u16 irq_bothedge[4];
         struct gpio_chip gpio;
         struct device *dev;
+        void __iomem *tmio_cnf;
 
         struct asic3_clk clocks[ARRAY_SIZE(asic3_clk_init)];
 };
@@ -685,8 +686,24 @@ static struct mfd_cell asic3_cell_ds1wm = {
         .resources     = ds1wm_resources,
 };
 
+static void asic3_mmc_pwr(struct platform_device *pdev, int state)
+{
+        struct asic3 *asic = dev_get_drvdata(pdev->dev.parent);
+
+        tmio_core_mmc_pwr(asic->tmio_cnf, 1 - asic->bus_shift, state);
+}
+
+static void asic3_mmc_clk_div(struct platform_device *pdev, int state)
+{
+        struct asic3 *asic = dev_get_drvdata(pdev->dev.parent);
+
+        tmio_core_mmc_clk_div(asic->tmio_cnf, 1 - asic->bus_shift, state);
+}
+
 static struct tmio_mmc_data asic3_mmc_data = {
-        .hclk = 24576000,
+        .hclk           = 24576000,
+        .set_pwr        = asic3_mmc_pwr,
+        .set_clk_div    = asic3_mmc_clk_div,
 };
 
 static struct resource asic3_mmc_resources[] = {
@@ -696,11 +713,6 @@ static struct resource asic3_mmc_resources[] = {
                 .flags = IORESOURCE_MEM,
         },
         {
-                .start = ASIC3_SD_CONFIG_BASE,
-                .end   = ASIC3_SD_CONFIG_BASE + 0x1ff,
-                .flags = IORESOURCE_MEM,
-        },
-        {
                 .start = 0,
                 .end   = 0,
                 .flags = IORESOURCE_IRQ,
@@ -743,6 +755,10 @@ static int asic3_mmc_enable(struct platform_device *pdev)
         asic3_set_register(asic, ASIC3_OFFSET(SDHWCTRL, SDCONF),
                            ASIC3_SDHWCTRL_SDPWR, 1);
 
+        /* ASIC3_SD_CTRL_BASE assumes 32-bit addressing, TMIO is 16-bit */
+        tmio_core_mmc_enable(asic->tmio_cnf, 1 - asic->bus_shift,
+                             ASIC3_SD_CTRL_BASE >> 1);
+
         return 0;
 }
 
@@ -797,10 +813,15 @@ static int __init asic3_mfd_probe(struct platform_device *pdev,
         asic3_cell_ds1wm.data_size = sizeof(asic3_cell_ds1wm);
 
         /* MMC */
+        asic->tmio_cnf = ioremap((ASIC3_SD_CONFIG_BASE >> asic->bus_shift) +
+                                 mem_sdio->start, 0x400 >> asic->bus_shift);
+        if (!asic->tmio_cnf) {
+                ret = -ENOMEM;
+                dev_dbg(asic->dev, "Couldn't ioremap SD_CONFIG\n");
+                goto out;
+        }
         asic3_mmc_resources[0].start >>= asic->bus_shift;
         asic3_mmc_resources[0].end   >>= asic->bus_shift;
-        asic3_mmc_resources[1].start >>= asic->bus_shift;
-        asic3_mmc_resources[1].end   >>= asic->bus_shift;
 
         asic3_cell_mmc.platform_data = &asic3_cell_mmc;
         asic3_cell_mmc.data_size = sizeof(asic3_cell_mmc);
@@ -820,7 +841,10 @@ static int __init asic3_mfd_probe(struct platform_device *pdev,
 
 static void asic3_mfd_remove(struct platform_device *pdev)
 {
+        struct asic3 *asic = platform_get_drvdata(pdev);
+
         mfd_remove_devices(&pdev->dev);
+        iounmap(asic->tmio_cnf);
 }
 
 /* Core */