Implement an sdhci-pltfm driver for the controller found on Marvell Dove SoC
Signed-off-by: Mike Rapoport <[email protected]> CC: Saeed Bishara <[email protected]> --- drivers/mmc/host/Kconfig | 13 +++++++ drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-dove.c | 70 ++++++++++++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci-pltfm.c | 3 ++ drivers/mmc/host/sdhci-pltfm.h | 1 + 5 files changed, 88 insertions(+), 0 deletions(-) create mode 100644 drivers/mmc/host/sdhci-dove.c diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 68d1279..4958839 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -130,6 +130,19 @@ config MMC_SDHCI_CNS3XXX If unsure, say N. +config MMC_SDHCI_DOVE + bool "SDHCI support on Marvell's Dove SoC" + depends on ARCH_DOVE + depends on MMC_SDHCI_PLTFM + select MMC_SDHCI_IO_ACCESSORS + help + This selects the Secure Digital Host Controller Interface in + Marvell's Dove SoC. + + If you have a controller with this interface, say Y or M here. + + If unsure, say N. + config MMC_SDHCI_S3C tristate "SDHCI support on Samsung S3C SoC" depends on MMC_SDHCI && PLAT_SAMSUNG diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 840bcb5..9e1c418 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-platform.o sdhci-platform-y := sdhci-pltfm.o sdhci-platform-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o +sdhci-platform-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o sdhci-of-y := sdhci-of-core.o diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c new file mode 100644 index 0000000..561167c --- /dev/null +++ b/drivers/mmc/host/sdhci-dove.c @@ -0,0 +1,70 @@ +/* + * sdhci-dove.c Support for SDHCI on Marvell's Dove SoC + * + * Author: Saeed Bishara <[email protected]> + * Mike Rapoport <[email protected]> + * Based on sdhci-cns3xxx.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/io.h> +#include <linux/mmc/host.h> + +#include "sdhci.h" +#include "sdhci-pltfm.h" + +static u16 sdhci_dove_readw(struct sdhci_host *host, int reg) +{ + u16 ret; + + switch (reg) { + case SDHCI_HOST_VERSION: + case SDHCI_SLOT_INT_STATUS: + /* those registers don't exist */ + return 0; + default: + ret = readw(host->ioaddr + reg); + } + return ret; +} + +static u32 sdhci_dove_readl(struct sdhci_host *host, int reg) +{ + u32 ret; + + switch (reg) { + case SDHCI_CAPABILITIES: + ret = readl(host->ioaddr + reg); + /* Mask the support for 3.0V */ + ret &= ~SDHCI_CAN_VDD_300; + break; + default: + ret = readl(host->ioaddr + reg); + } + return ret; +} + +static struct sdhci_ops sdhci_dove_ops = { + .read_w = sdhci_dove_readw, + .read_l = sdhci_dove_readl, +}; + +struct sdhci_pltfm_data sdhci_dove_pdata = { + .ops = &sdhci_dove_ops, + .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | + SDHCI_QUIRK_NO_BUSY_IRQ | + SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | + SDHCI_QUIRK_FORCE_DMA, +}; diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index e045e3c..28d818e 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -161,6 +161,9 @@ static const struct platform_device_id sdhci_pltfm_ids[] = { #ifdef CONFIG_MMC_SDHCI_CNS3XXX { "sdhci-cns3xxx", (kernel_ulong_t)&sdhci_cns3xxx_pdata }, #endif +#ifdef CONFIG_MMC_SDHCI_DOVE + { "sdhci-dove", (kernel_ulong_t)&sdhci_dove_pdata }, +#endif { }, }; MODULE_DEVICE_TABLE(platform, sdhci_pltfm_ids); diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h index 900f329..718d837 100644 --- a/drivers/mmc/host/sdhci-pltfm.h +++ b/drivers/mmc/host/sdhci-pltfm.h @@ -14,5 +14,6 @@ #include <linux/sdhci-pltfm.h> extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata; +extern struct sdhci_pltfm_data sdhci_dove_pdata; #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */ -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
