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e1e9dbddfe
Define new source files "module.h" and "module.c" to separate the definitions of the Greybus module abstraction from other code. Rename "greybus_module" to be "gb_module", for brevity. Do the same for a few other symbols with "greybus_module" in their names. A few (like greybus_module_id) are more visible outside this kernel module so we'll keep their names more descriptive. Add a definition for U8_MAX in "kernel_ver.h" (it appeared in 3.14). Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
/*
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* SD/MMC Greybus driver.
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*
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* Copyright 2014 Google Inc.
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*
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* Released under the GPLv2 only.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/mmc/host.h>
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#include "greybus.h"
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struct gb_sdio_host {
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struct mmc_host *mmc;
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struct mmc_request *mrq;
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// FIXME - some lock?
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};
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static const struct greybus_module_id id_table[] = {
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{ GREYBUS_DEVICE(0x43, 0x43) }, /* make shit up */
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{ }, /* terminating NULL entry */
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};
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static void gb_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
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{
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// FIXME - do something here...
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}
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static void gb_sd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
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{
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// FIXME - do something here...
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}
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static int gb_sd_get_ro(struct mmc_host *mmc)
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{
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// FIXME - do something here...
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return 0;
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}
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static const struct mmc_host_ops gb_sd_ops = {
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.request = gb_sd_request,
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.set_ios = gb_sd_set_ios,
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.get_ro = gb_sd_get_ro,
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};
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int gb_sdio_probe(struct gb_module *gmod,
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const struct greybus_module_id *id)
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{
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struct mmc_host *mmc;
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struct gb_sdio_host *host;
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mmc = mmc_alloc_host(sizeof(struct gb_sdio_host), &gmod->dev);
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if (!mmc)
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return -ENOMEM;
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host = mmc_priv(mmc);
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host->mmc = mmc;
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mmc->ops = &gb_sd_ops;
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// FIXME - set up size limits we can handle.
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gmod->gb_sdio_host = host;
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return 0;
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}
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void gb_sdio_disconnect(struct gb_module *gmod)
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{
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struct mmc_host *mmc;
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struct gb_sdio_host *host;
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host = gmod->gb_sdio_host;
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mmc = host->mmc;
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mmc_remove_host(mmc);
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mmc_free_host(mmc);
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}
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#if 0
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static struct greybus_driver sd_gb_driver = {
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.probe = gb_sdio_probe,
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.disconnect = gb_sdio_disconnect,
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.id_table = id_table,
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};
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module_greybus_driver(sd_gb_driver);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Greybus SD/MMC Host driver");
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MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
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#endif
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