Release 4.11 drivers/mmc/core/bus.c
/*
* linux/drivers/mmc/core/bus.c
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
* Copyright (C) 2007 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* MMC card bus driver model
*/
#include <linux/export.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include "core.h"
#include "card.h"
#include "host.h"
#include "sdio_cis.h"
#include "bus.h"
#define to_mmc_driver(d) container_of(d, struct mmc_driver, drv)
static ssize_t type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mmc_card *card = mmc_dev_to_card(dev);
switch (card->type) {
case MMC_TYPE_MMC:
return sprintf(buf, "MMC\n");
case MMC_TYPE_SD:
return sprintf(buf, "SD\n");
case MMC_TYPE_SDIO:
return sprintf(buf, "SDIO\n");
case MMC_TYPE_SD_COMBO:
return sprintf(buf, "SDcombo\n");
default:
return -EFAULT;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 74 | 85.06% | 2 | 40.00% |
| Michał Mirosław | 11 | 12.64% | 1 | 20.00% |
| Andy Shevchenko | 1 | 1.15% | 1 | 20.00% |
| Greg Kroah-Hartman | 1 | 1.15% | 1 | 20.00% |
| Total | 87 | 100.00% | 5 | 100.00% |
static DEVICE_ATTR_RO(type);
static struct attribute *mmc_dev_attrs[] = {
&dev_attr_type.attr,
NULL,
};
ATTRIBUTE_GROUPS(mmc_dev);
/*
* This currently matches any MMC driver to any MMC card - drivers
* themselves make the decision whether to drive this card in their
* probe method.
*/
static int mmc_bus_match(struct device *dev, struct device_driver *drv)
{
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int
mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct mmc_card *card = mmc_dev_to_card(dev);
const char *type;
int retval = 0;
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SDcombo";
break;
default:
type = NULL;
}
if (type) {
retval = add_uevent_var(env, "MMC_TYPE=%s", type);
if (retval)
return retval;
}
retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
if (retval)
return retval;
/*
* Request the mmc_block device. Note: that this is a direct request
* for the module it carries no information as to what is inserted.
*/
retval = add_uevent_var(env, "MODALIAS=mmc:block");
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 97 | 69.78% | 3 | 42.86% |
| Andy Whitcroft | 17 | 12.23% | 1 | 14.29% |
| Kay Sievers | 16 | 11.51% | 1 | 14.29% |
| Michał Mirosław | 8 | 5.76% | 1 | 14.29% |
| Andy Shevchenko | 1 | 0.72% | 1 | 14.29% |
| Total | 139 | 100.00% | 7 | 100.00% |
static int mmc_bus_probe(struct device *dev)
{
struct mmc_driver *drv = to_mmc_driver(dev->driver);
struct mmc_card *card = mmc_dev_to_card(dev);
return drv->probe(card);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ulf Hansson | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
static int mmc_bus_remove(struct device *dev)
{
struct mmc_driver *drv = to_mmc_driver(dev->driver);
struct mmc_card *card = mmc_dev_to_card(dev);
drv->remove(card);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ulf Hansson | 43 | 100.00% | 1 | 100.00% |
| Total | 43 | 100.00% | 1 | 100.00% |
static void mmc_bus_shutdown(struct device *dev)
{
struct mmc_driver *drv = to_mmc_driver(dev->driver);
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret;
if (dev->driver && drv->shutdown)
drv->shutdown(card);
if (host->bus_ops->shutdown) {
ret = host->bus_ops->shutdown(host);
if (ret)
pr_warn("%s: error %d during shutdown\n",
mmc_hostname(host), ret);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ulf Hansson | 99 | 100.00% | 4 | 100.00% |
| Total | 99 | 100.00% | 4 | 100.00% |
#ifdef CONFIG_PM_SLEEP
static int mmc_bus_suspend(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret;
ret = pm_generic_suspend(dev);
if (ret)
return ret;
ret = host->bus_ops->suspend(host);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 31 | 50.82% | 1 | 25.00% |
| Ulf Hansson | 29 | 47.54% | 2 | 50.00% |
| Andy Shevchenko | 1 | 1.64% | 1 | 25.00% |
| Total | 61 | 100.00% | 4 | 100.00% |
static int mmc_bus_resume(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret;
ret = host->bus_ops->resume(host);
if (ret)
pr_warn("%s: error %d during resume (card was removed?)\n",
mmc_hostname(host), ret);
ret = pm_generic_resume(dev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ulf Hansson | 38 | 54.29% | 2 | 50.00% |
| Pierre Ossman | 31 | 44.29% | 1 | 25.00% |
| Andy Shevchenko | 1 | 1.43% | 1 | 25.00% |
| Total | 70 | 100.00% | 4 | 100.00% |
#endif
#ifdef CONFIG_PM
static int mmc_runtime_suspend(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
return host->bus_ops->runtime_suspend(host);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ohad Ben-Cohen | 26 | 65.00% | 1 | 33.33% |
| Ulf Hansson | 14 | 35.00% | 2 | 66.67% |
| Total | 40 | 100.00% | 3 | 100.00% |
static int mmc_runtime_resume(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
return host->bus_ops->runtime_resume(host);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ohad Ben-Cohen | 26 | 65.00% | 1 | 33.33% |
| Ulf Hansson | 14 | 35.00% | 2 | 66.67% |
| Total | 40 | 100.00% | 3 | 100.00% |
#endif /* !CONFIG_PM */
static const struct dev_pm_ops mmc_bus_pm_ops = {
SET_RUNTIME_PM_OPS(mmc_runtime_suspend, mmc_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(mmc_bus_suspend, mmc_bus_resume)
};
static struct bus_type mmc_bus_type = {
.name = "mmc",
.dev_groups = mmc_dev_groups,
.match = mmc_bus_match,
.uevent = mmc_bus_uevent,
.probe = mmc_bus_probe,
.remove = mmc_bus_remove,
.shutdown = mmc_bus_shutdown,
.pm = &mmc_bus_pm_ops,
};
int mmc_register_bus(void)
{
return bus_register(&mmc_bus_type);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
void mmc_unregister_bus(void)
{
bus_unregister(&mmc_bus_type);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
/**
* mmc_register_driver - register a media driver
* @drv: MMC media driver
*/
int mmc_register_driver(struct mmc_driver *drv)
{
drv->drv.bus = &mmc_bus_type;
return driver_register(&drv->drv);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 22 | 78.57% | 1 | 50.00% |
| Ulf Hansson | 6 | 21.43% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(mmc_register_driver);
/**
* mmc_unregister_driver - unregister a media driver
* @drv: MMC media driver
*/
void mmc_unregister_driver(struct mmc_driver *drv)
{
drv->drv.bus = &mmc_bus_type;
driver_unregister(&drv->drv);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 21 | 77.78% | 1 | 50.00% |
| Ulf Hansson | 6 | 22.22% | 1 | 50.00% |
| Total | 27 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(mmc_unregister_driver);
static void mmc_release_card(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
sdio_free_common_cis(card);
kfree(card->info);
kfree(card);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 37 | 97.37% | 3 | 75.00% |
| Andy Shevchenko | 1 | 2.63% | 1 | 25.00% |
| Total | 38 | 100.00% | 4 | 100.00% |
/*
* Allocate and initialise a new MMC card structure.
*/
struct mmc_card *mmc_alloc_card(struct mmc_host *host, struct device_type *type)
{
struct mmc_card *card;
card = kzalloc(sizeof(struct mmc_card), GFP_KERNEL);
if (!card)
return ERR_PTR(-ENOMEM);
card->host = host;
device_initialize(&card->dev);
card->dev.parent = mmc_classdev(host);
card->dev.bus = &mmc_bus_type;
card->dev.release = mmc_release_card;
card->dev.type = type;
return card;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 99 | 99.00% | 2 | 66.67% |
| Mariusz Kozlowski | 1 | 1.00% | 1 | 33.33% |
| Total | 100 | 100.00% | 3 | 100.00% |
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
const char *uhs_bus_speed_mode = "";
static const char *const uhs_speeds[] = {
[UHS_SDR12_BUS_SPEED] = "SDR12 ",
[UHS_SDR25_BUS_SPEED] = "SDR25 ",
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
[UHS_SDR104_BUS_SPEED] = "SDR104 ",
[UHS_DDR50_BUS_SPEED] = "DDR50 ",
};
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_card_uhs(card) &&
(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
if (mmc_host_is_spi(card->host)) {
pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_hs(card) ? "high speed " : "",
mmc_card_ddr52(card) ? "DDR " : "",
type);
} else {
pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_hs(card) ? "high speed " : ""),
mmc_card_hs400(card) ? "HS400 " :
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_hs400es(card) ? "Enhanced strobe " : "",
mmc_card_ddr52(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
mmc_init_context_info(card->host);
card->dev.of_node = mmc_of_find_child_device(card->host, 0);
device_enable_async_suspend(&card->dev);
ret = device_add(&card->dev);
if (ret)
return ret;
mmc_card_set_present(card);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 135 | 35.53% | 3 | 14.29% |
| Subhash Jadavani | 75 | 19.74% | 1 | 4.76% |
| David Brownell | 34 | 8.95% | 1 | 4.76% |
| Arindam Nath | 22 | 5.79% | 1 | 4.76% |
| Michał Mirosław | 19 | 5.00% | 2 | 9.52% |
| Adrian Hunter | 17 | 4.47% | 1 | 4.76% |
| Sascha Hauer | 15 | 3.95% | 1 | 4.76% |
| Girish K.S | 13 | 3.42% | 2 | 9.52% |
| Seungwon Jeon | 11 | 2.89% | 2 | 9.52% |
| Shawn Lin | 10 | 2.63% | 1 | 4.76% |
| Viresh Kumar | 10 | 2.63% | 1 | 4.76% |
| Fu Zhonghui | 8 | 2.11% | 1 | 4.76% |
| Konstantin Dorfman | 7 | 1.84% | 1 | 4.76% |
| Kay Sievers | 2 | 0.53% | 1 | 4.76% |
| Jackey Shen | 1 | 0.26% | 1 | 4.76% |
| Philip Rakity | 1 | 0.26% | 1 | 4.76% |
| Total | 380 | 100.00% | 21 | 100.00% |
/*
* Unregister a new MMC card with the driver model, and
* (eventually) free it.
*/
void mmc_remove_card(struct mmc_card *card)
{
#ifdef CONFIG_DEBUG_FS
mmc_remove_card_debugfs(card);
#endif
if (mmc_card_present(card)) {
if (mmc_host_is_spi(card->host)) {
pr_info("%s: SPI card removed\n",
mmc_hostname(card->host));
} else {
pr_info("%s: card %04x removed\n",
mmc_hostname(card->host), card->rca);
}
device_del(&card->dev);
of_node_put(card->dev.of_node);
}
put_device(&card->dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 50 | 52.08% | 2 | 33.33% |
| David Brownell | 25 | 26.04% | 1 | 16.67% |
| Håvard Skinnemoen | 10 | 10.42% | 1 | 16.67% |
| Sascha Hauer | 9 | 9.38% | 1 | 16.67% |
| Girish K.S | 2 | 2.08% | 1 | 16.67% |
| Total | 96 | 100.00% | 6 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 717 | 47.48% | 7 | 14.29% |
| Ulf Hansson | 319 | 21.13% | 11 | 22.45% |
| Subhash Jadavani | 75 | 4.97% | 1 | 2.04% |
| Ohad Ben-Cohen | 67 | 4.44% | 1 | 2.04% |
| David Brownell | 59 | 3.91% | 1 | 2.04% |
| Michał Mirosław | 38 | 2.52% | 2 | 4.08% |
| Sascha Hauer | 27 | 1.79% | 1 | 2.04% |
| Chuanxiao Dong | 23 | 1.52% | 2 | 4.08% |
| Arindam Nath | 22 | 1.46% | 1 | 2.04% |
| Greg Kroah-Hartman | 21 | 1.39% | 1 | 2.04% |
| Kay Sievers | 18 | 1.19% | 2 | 4.08% |
| Adrian Hunter | 17 | 1.13% | 1 | 2.04% |
| Andy Whitcroft | 17 | 1.13% | 1 | 2.04% |
| Girish K.S | 15 | 0.99% | 2 | 4.08% |
| Seungwon Jeon | 11 | 0.73% | 2 | 4.08% |
| Shawn Lin | 10 | 0.66% | 1 | 2.04% |
| Håvard Skinnemoen | 10 | 0.66% | 1 | 2.04% |
| Viresh Kumar | 10 | 0.66% | 1 | 2.04% |
| Fu Zhonghui | 8 | 0.53% | 1 | 2.04% |
| Konstantin Dorfman | 7 | 0.46% | 1 | 2.04% |
| Paul Gortmaker | 6 | 0.40% | 2 | 4.08% |
| Andy Shevchenko | 5 | 0.33% | 1 | 2.04% |
| Tejun Heo | 3 | 0.20% | 1 | 2.04% |
| Rafael J. Wysocki | 2 | 0.13% | 1 | 2.04% |
| Philip Rakity | 1 | 0.07% | 1 | 2.04% |
| Jackey Shen | 1 | 0.07% | 1 | 2.04% |
| Mariusz Kozlowski | 1 | 0.07% | 1 | 2.04% |
| Total | 1510 | 100.00% | 49 | 100.00% |
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