f0de836923
There are a couple of problems left from the sdhci pltfm and OF consolidation changes. * When building more than one sdhci-pltfm based drivers in the same image, linker will give multiple definition error on the sdhci-pltfm helper functions. For example right now, building sdhci-of-esdhc and sdhci-of-hlwd together is a valid combination from Kconfig view. * With the current build method, there is error with building the drivers as module, but module installation fails with modprobe. The patch fixes above problems by changing sdhci-pltfm into a module. To avoid EXPORT_SYMBOL on so many big endian IO accessors, it moves these accessors into sdhci-pltfm.h as the 'static inline' functions. As a result, sdhci.h needs to be included in sdhci-pltfm.h, and in turn can be removed from individual drivers which already include sdhci-pltfm.h. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
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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-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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static 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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};
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static int __devinit sdhci_dove_probe(struct platform_device *pdev)
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{
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return sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
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}
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static int __devexit sdhci_dove_remove(struct platform_device *pdev)
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{
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return sdhci_pltfm_unregister(pdev);
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}
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static struct platform_driver sdhci_dove_driver = {
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.driver = {
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.name = "sdhci-dove",
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.owner = THIS_MODULE,
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},
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.probe = sdhci_dove_probe,
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.remove = __devexit_p(sdhci_dove_remove),
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#ifdef CONFIG_PM
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.suspend = sdhci_pltfm_suspend,
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.resume = sdhci_pltfm_resume,
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#endif
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};
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static int __init sdhci_dove_init(void)
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{
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return platform_driver_register(&sdhci_dove_driver);
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}
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module_init(sdhci_dove_init);
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static void __exit sdhci_dove_exit(void)
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{
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platform_driver_unregister(&sdhci_dove_driver);
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}
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module_exit(sdhci_dove_exit);
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MODULE_DESCRIPTION("SDHCI driver for Dove");
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MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, "
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"Mike Rapoport <mike@compulab.co.il>");
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MODULE_LICENSE("GPL v2");
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