greybus: Greybus SD/MMC host driver (83ddaaab) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/staging/greybus/Makefile

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		@@ -2,6 +2,7 @@ greybus-y := core.o

		obj-m += greybus.o
		obj-m += i2c-gb.o
		obj-m += sdio-gb.o

		KERNELVER ?= $(shell uname -r)
		KERNELDIR ?= /lib/modules/$(KERNELVER)/build

drivers/staging/greybus/sdio-gb.c

0 → 100644

+88 −0

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		/*
		* SD/MMC Greybus driver.
		*
		* Copyright 2014 Google Inc.
		*
		* Released under the GPLv2 only.
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/slab.h>
		#include <linux/mmc/host.h>
		#include "greybus.h"

		struct sd_gb_host {
		struct mmc_host *mmc;
		struct mmc_request *mrq;
		// FIXME - some lock?
		};

		static const struct greybus_device_id id_table[] = {
		{ GREYBUS_DEVICE(0x43, 0x43) }, /* make shit up */
		{ }, /* terminating NULL entry */
		};

		static void gb_sd_request(struct mmc_host mmc, struct mmc_request mrq)
		{
		// FIXME - do something here...
		}

		static void gb_sd_set_ios(struct mmc_host mmc, struct mmc_ios ios)
		{
		// FIXME - do something here...
		}

		static int gb_sd_get_ro(struct mmc_host *mmc)
		{
		// FIXME - do something here...
		return 0;
		}

		static const struct mmc_host_ops gb_sd_ops = {
		.request = gb_sd_request,
		.set_ios = gb_sd_set_ios,
		.get_ro = gb_sd_get_ro,
		};

		static int sd_gb_probe(struct greybus_device gdev, const struct greybus_device_id id)
		{
		struct mmc_host *mmc;
		struct sd_gb_host *host;

		mmc = mmc_alloc_host(sizeof(struct sd_gb_host), &gdev->dev);
		if (!mmc)
		return -ENOMEM;

		host = mmc_priv(mmc);
		host->mmc = mmc;

		mmc->ops = &gb_sd_ops;
		// FIXME - set up size limits we can handle.

		greybus_set_drvdata(gdev, host);
		return 0;
		}

		static void sd_gb_disconnect(struct greybus_device *gdev)
		{
		struct mmc_host *mmc;
		struct sd_gb_host *host;

		host = greybus_get_drvdata(gdev);
		mmc = host->mmc;

		mmc_remove_host(mmc);
		mmc_free_host(mmc);
		}

		static struct greybus_driver sd_gb_driver = {
		.probe = sd_gb_probe,
		.disconnect = sd_gb_disconnect,
		.id_table = id_table,
		};

		module_greybus_driver(sd_gb_driver);
		MODULE_LICENSE("GPL");
		MODULE_DESCRIPTION("Greybus SD/MMC Host driver");
		MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");