mci: core: Increase clock for SD highspeed mode ...

Putting a SD card into highspeed mode doesn't help much when we
still clock the card with 25MHz. Increase the clock speed to 50MHz
for high speed cards.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: mci: Add mci_get_device_by_name function ...

Get a 'struct mci' by search after the device name.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: mci: Make two functions public ...

There is no possibility to read/write to the extended CSD register of
MMC devices from a command. To avoid duplicated driver code, two driver
functions have to be public.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: mmci: Fix status flags check ...

Data transfer procedures should check _DATA_ flags instead of _CMD_.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MCI: pxa: depend on right symbol ...

Now that we also have PXA3XX support the dependency on
ARCH_PXA is too broad for this driver.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Replace printf with dev_* ...

This replaces printf with dev_* since a struct device_d * is
available.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Check for errors in esdhc_pio_read_write ...

esdhc_pio_read_write can fail, so let it return an error code
rather than void.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Use IS_ENABLED() instead of #ifdef ...

To get rid of some #ifdefery.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: use 'const void *' for struct of_device_id.data ...

Since 2011 barebox' of_device_id struct uses unsigned long type for data field:

    struct of_device_id {
            char *compatible;
            unsigned long data;
    };

Almost always struct of_device_id.data field are used as pointer
and need 'unsigned long' casting.

E.g. see 'git grep -A 4 of_device_id drivers/' output:

    drivers/ata/sata-imx.c:static __maybe_unused struct of_device_id imx_sata_dt_ids[] = {
    drivers/ata/sata-imx.c- {
    drivers/ata/sata-imx.c-         .compatible = "fsl,imx6q-ahci",
    drivers/ata/sata-imx.c-         .data = (unsigned long)&data_imx6,
    drivers/ata/sata-imx.c- }, {

Here is of_device_id struct in linux kernel v4.0:

    struct of_device_id {
            char name[32];
            char type[32];
            char compatible[128];
            const void *data;
    };

Changing of_device_id.data type to 'const void *data' will increase
barebox' linux kernel compatibility and decrease number of 'unsigned
long' casts.

Part of the patch was done using the 'coccinelle' tool with the
following semantic patch:

    @rule1@
    identifier dev;
    identifier type;
    identifier func;
    @@
    func(...) {
    <...
    - dev_get_drvdata(dev, (unsigned long *)&type)
    + dev_get_drvdata(dev, (const void **)&type)
    ...>
    }
    @rule2@
    identifier dev;
    identifier type;
    identifier func;
    identifier data;
    @@
    func(...) {
    <...
    - dev_get_drvdata(dev, (unsigned long *)&type->data)
    + dev_get_drvdata(dev, (const void **)&type->data)
    ...>
    }

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: core: Check return value of dev_add_param_bool ...

Commit 03b59bd changed the
return values of dev_add_param_* to ERR_PTR(-ENOSYS) and broke a few boards.
We have now to care about the return value of dev_add_param_bool() in
mci_register().

Also set the ret variable when dev_add_param_bool() fails.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MMC: dw_mmc: PIO mode fixes ...

Simplify PIO mode routines.
Fix a bug when IO is possibly performed twice because of using old
interrupt status.
Support for slow-speed card writes.

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/tegra'

Merge branch 'for-next/streaming-dma' ...

Conflicts:
	drivers/mci/dw_mmc.c

MCI: tegra-sdmmc: convert to streaming DMA ops ...

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MCI: imx: convert to streaming DMA ops ...

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MCI: dw-mmc: convert to streaming DMA ops ...

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: move DMA alloc functions to dma.h ...

This better separates the DMA from the MMU functionality.

Also move all drivers that only depends on asm/mmu.h for the alloc
functions over to the common header.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: change dma_alloc/free_coherent to match other architectures ...

As a lot drivers currently rely on the 1:1 virt->phys mapping on ARM
we define DMA_ADDRESS_BROKEN to mark them. In order to use them on
other architectures with a different mapping they need proper fixing.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MMC: dw_mmc: Add support for PIO mode and Rockchip variant of this hardware ...

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: tegra: handle mmc aliases ...

This allows to have fixed device names for the SDMMC
controllers.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/mxs'

mci: mxs: Add devicetree support ...

Add device tree compatibles and allow retrieving data from device tree
instead of platform_data only.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MMC: IMX: Reset MMC_BOOT register after controller reset. ...

This helps with EMMC detection when booting from EMMC directly.
Taken from u-boot.

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: remove unnecessary mach/imx-regs.h include ...

And replace the ones needed with the SoC specific header.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/randconfig-1'

Merge branch 'for-next/imx'

mci: mxs-mci: add f_min/f_max fields unconditionally ...

Parts of the driver need these regardless of whether CONFIG_MCI_INFO
is set, so add these fields unconditionally.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Add i.MX6sl compatible ...

Which will also be used for the i.MX6sx.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Fix Interrupt enable register for i.MX6sx ...

The reset default of this register has changed on i.MX6sx. Explicitly
write the value we want to have to make it work on i.MX6sx.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: esdhc: add back PIO_TIMEOUT ...

This got lost during bd1bf53b34c
(mci: imx-esdhc: factor out common sdhci registers). Seems the PIO
option isn't too heavily used.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>