mmc: arm_pl180_mmci: Rely on DM

The PL180/MMCI driver is implied to use CONFIG_DM and the ARM
defconfigs such as configs/vexpress_ca9x4_defconfig will get it
as well.

With a simple oneline to default to not being the v2 variant,
the original ARM MMCI variant works fine with the driver as well.
The IP version actually needs to be read out from a register on
the ARM versions, but we will simply assume we are running on the
original hardware if arm,primecell-periphid is not explicitly
specified in the device tree.

Drop the !CONFIG_DM code and depend on DM_MMC.

Tested on the Versatile Express CA9x4 board.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 510050f3920a1f713878eea4c027c5c00e4be82f..06e32e75696af2a661a3d16dd82d716048e0620f 100644 (file)
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -87,6 +87,7 @@ config MMC_SPI_CRC_ON
 
 config ARM_PL180_MMCI
        bool "ARM AMBA Multimedia Card Interface and compatible support"
+       depends on DM_MMC
        help
          This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card
          Interface (PL180, PL181 and compatible) support.

diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 5cf5502ed545c653713f7d646db4c314da768132..2666b65362bcfbf1c10e0285189e36b673b18ab3 100644 (file)
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -18,6 +18,7 @@
 #include <malloc.h>
 #include <mmc.h>
 #include <dm/device_compat.h>
+#include <dm.h>
 
 #include <asm/io.h>
 #include <asm-generic/gpio.h>
@@ -25,8 +26,6 @@
 #include "arm_pl180_mmci.h"
 #include <linux/delay.h>
 
-#ifdef CONFIG_DM_MMC
-#include <dm.h>
 #define MMC_CLOCK_MAX  48000000
 #define MMC_CLOCK_MIN  400000
 
@@ -34,7 +33,6 @@ struct arm_pl180_mmc_plat {
        struct mmc_config cfg;
        struct mmc mmc;
 };
-#endif
 
 static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd)
 {
@@ -358,65 +356,6 @@ static int  host_set_ios(struct mmc *dev)
        return 0;
 }
 
-#ifndef CONFIG_DM_MMC
-/* MMC uses open drain drivers in the enumeration phase */
-static int mmc_host_reset(struct mmc *dev)
-{
-       struct pl180_mmc_host *host = dev->priv;
-
-       writel(host->pwr_init, &host->base->power);
-
-       return 0;
-}
-
-static const struct mmc_ops arm_pl180_mmci_ops = {
-       .send_cmd = host_request,
-       .set_ios = host_set_ios,
-       .init = mmc_host_reset,
-};
-
-/*
- * mmc_host_init - initialize the mmc controller.
- * Set initial clock and power for mmc slot.
- * Initialize mmc struct and register with mmc framework.
- */
-
-int arm_pl180_mmci_init(struct pl180_mmc_host *host, struct mmc **mmc)
-{
-       u32 sdi_u32;
-
-       writel(host->pwr_init, &host->base->power);
-       writel(host->clkdiv_init, &host->base->clock);
-       udelay(CLK_CHANGE_DELAY);
-
-       /* Disable mmc interrupts */
-       sdi_u32 = readl(&host->base->mask0) & ~SDI_MASK0_MASK;
-       writel(sdi_u32, &host->base->mask0);
-
-       host->cfg.name = host->name;
-       host->cfg.ops = &arm_pl180_mmci_ops;
-
-       /* TODO remove the duplicates */
-       host->cfg.host_caps = host->caps;
-       host->cfg.voltages = host->voltages;
-       host->cfg.f_min = host->clock_min;
-       host->cfg.f_max = host->clock_max;
-       if (host->b_max != 0)
-               host->cfg.b_max = host->b_max;
-       else
-               host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
-
-       *mmc = mmc_create(&host->cfg, host);
-       if (!*mmc)
-               return -1;
-       debug("registered mmc interface number is:%d\n",
-             (*mmc)->block_dev.devnum);
-
-       return 0;
-}
-#endif
-
-#ifdef CONFIG_DM_MMC
 static void arm_pl180_mmc_init(struct pl180_mmc_host *host)
 {
        u32 sdi_u32;
@@ -477,7 +416,7 @@ static int arm_pl180_mmc_probe(struct udevice *dev)
                host->version2 = true;
                break;
        default:
-               host->version2 = true;
+               host->version2 = false; /* ARM variant */
        }
 
        gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN);
@@ -561,4 +500,3 @@ U_BOOT_DRIVER(arm_pl180_mmc) = {
        .priv_auto      = sizeof(struct pl180_mmc_host),
        .plat_auto      = sizeof(struct arm_pl180_mmc_plat),
 };
-#endif