tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mmc: Add support for the Marvell Dove SDHCI controller
Implement an sdhci-pltfm driver for the controller found in the
Marvell Dove SoC.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Saeed Bishara <saeed@marvell.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
authored by
Mike Rapoport
and committed by
Chris Ball
985b1aa0
0c21e3aa
+86
+11
drivers/mmc/host/Kconfig
+11
drivers/mmc/host/Kconfig
···
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If unsure, say N.
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config MMC_SDHCI_DOVE
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bool "SDHCI support on Marvell's Dove SoC"
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depends on ARCH_DOVE
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depends on MMC_SDHCI_PLTFM
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select MMC_SDHCI_IO_ACCESSORS
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help
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This selects the Secure Digital Host Controller Interface in
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Marvell's Dove SoC.
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If unsure, say N.
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config MMC_SDHCI_S3C
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tristate "SDHCI support on Samsung S3C SoC"
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depends on MMC_SDHCI && PLAT_SAMSUNG
+1
drivers/mmc/host/Makefile
+1
drivers/mmc/host/Makefile
···
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sdhci-platform-y := sdhci-pltfm.o
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sdhci-platform-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
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sdhci-platform-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o
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sdhci-platform-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o
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obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
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sdhci-of-y := sdhci-of-core.o
+70
drivers/mmc/host/sdhci-dove.c
+70
drivers/mmc/host/sdhci-dove.c
···
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/*
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* sdhci-dove.c Support for SDHCI on Marvell's Dove SoC
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*
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* Author: Saeed Bishara <saeed@marvell.com>
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* Mike Rapoport <mike@compulab.co.il>
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* Based on sdhci-cns3xxx.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/io.h>
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#include <linux/mmc/host.h>
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#include "sdhci.h"
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#include "sdhci-pltfm.h"
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static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
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{
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u16 ret;
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switch (reg) {
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case SDHCI_HOST_VERSION:
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case SDHCI_SLOT_INT_STATUS:
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/* those registers don't exist */
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return 0;
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default:
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ret = readw(host->ioaddr + reg);
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}
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return ret;
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}
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static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
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{
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u32 ret;
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switch (reg) {
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case SDHCI_CAPABILITIES:
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ret = readl(host->ioaddr + reg);
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/* Mask the support for 3.0V */
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ret &= ~SDHCI_CAN_VDD_300;
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break;
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default:
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ret = readl(host->ioaddr + reg);
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}
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return ret;
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}
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static struct sdhci_ops sdhci_dove_ops = {
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.read_w = sdhci_dove_readw,
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.read_l = sdhci_dove_readl,
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};
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struct sdhci_pltfm_data sdhci_dove_pdata = {
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.ops = &sdhci_dove_ops,
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.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
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SDHCI_QUIRK_NO_BUSY_IRQ |
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SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
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SDHCI_QUIRK_FORCE_DMA,
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};
+3
drivers/mmc/host/sdhci-pltfm.c
+3
drivers/mmc/host/sdhci-pltfm.c
···
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#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX
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{ "sdhci-esdhc-imx", (kernel_ulong_t)&sdhci_esdhc_imx_pdata },
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#endif
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#ifdef CONFIG_MMC_SDHCI_DOVE
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{ "sdhci-dove", (kernel_ulong_t)&sdhci_dove_pdata },
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#endif
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{ },
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};
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MODULE_DEVICE_TABLE(platform, sdhci_pltfm_ids);