From: Sebastian Hesselbarth sebastian.hesselbarth@gmail.com
This adds a driver for the sdhci controller found on Dove SoCs.
Signed-off-by: Sebastian Hesselbarth sebastian.hesselbarth@gmail.com Signed-off-by: Sascha Silbe t-uboot@infra-silbe.de --- v3->v4: added header file with exported function
arch/arm/include/asm/arch-dove/mmc.h | 27 ++++++++++ drivers/mmc/Makefile | 1 + drivers/mmc/dove_sdhci.c | 101 +++++++++++++++++++++++++++++++++++ 3 files changed, 129 insertions(+) create mode 100644 arch/arm/include/asm/arch-dove/mmc.h create mode 100644 drivers/mmc/dove_sdhci.c
diff --git a/arch/arm/include/asm/arch-dove/mmc.h b/arch/arm/include/asm/arch-dove/mmc.h new file mode 100644 index 0000000..579396c --- /dev/null +++ b/arch/arm/include/asm/arch-dove/mmc.h @@ -0,0 +1,27 @@ +/* + * Marvell Dove SoC SDHCI + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#ifndef _DOVEMMC_H +#define _DOVEMMC_H + +int dove_sdhci_init(int num); +#endif /* _DOVEMMC_H */ diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index fb6b502..cdff33d 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -31,6 +31,7 @@ endif
COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o COBJS-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o +COBJS-$(CONFIG_DOVE_SDHCI) += dove_sdhci.o COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o COBJS-$(CONFIG_FTSDC010) += ftsdc010_esdhc.o COBJS-$(CONFIG_GENERIC_MMC) += mmc.o diff --git a/drivers/mmc/dove_sdhci.c b/drivers/mmc/dove_sdhci.c new file mode 100644 index 0000000..ac15fd7 --- /dev/null +++ b/drivers/mmc/dove_sdhci.c @@ -0,0 +1,101 @@ +/* + * + * Marvell Dove SDHCI driver + * + * Sebastian Hesselbarth sebastian.hesselbarth@gmail.com + * + * Based on linux drivers/mmc/host/sdhci-dove.c + * by: Saeed Bishara saeed@marvell.com + * Mike Rapoport mike@compulab.co.il + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <common.h> +#include <malloc.h> +#include <sdhci.h> +#include <asm/arch/dove.h> + +static u16 dove_sdhci_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 dove_sdhci_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 dove_sdhci_ops = { + .read_w = dove_sdhci_readw, + .read_l = dove_sdhci_readl, +}; + +static struct sdhci_host hosts[2] = { + { + .name = "Dove SDHCI0", + .ioaddr = (void *)DOVE_SDIO0_BASE, + }, + { + .name = "Dove SDHCI1", + .ioaddr = (void *)DOVE_SDIO1_BASE, + }, +}; + +int dove_sdhci_init(int num) +{ + struct sdhci_host *host; + + if (num < 0 || num > 1) + return 1; + + host = &hosts[num]; + + if (host->version) + return 1; + + host->quirks = + SDHCI_QUIRK_NO_HISPD_BIT | + SDHCI_QUIRK_BROKEN_R1B | + SDHCI_QUIRK_32BIT_DMA_ADDR; + host->version = SDHCI_SPEC_200; + host->ops = &dove_sdhci_ops; + + add_sdhci(host, 50000000, 4000000); + return 0; +}