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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-11 12:45:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-11 12:45:35 -0800
commitbad73c5aa069f1f14cc07ce7bbae8d463635560c (patch)
treedb905bb3400e6fe70be95cd20158bed79b2b2c6c /drivers/mmc/host
parentb58ed041a360ed051fab17e4d9b0f451c6fedba7 (diff)
parentf316fc56555a5c3bcf6350f3d5ac26dd2c55f4cb (diff)
Merge tag 'pm+acpi-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki: - Introduction of device PM QoS flags. - ACPI device power management update allowing subsystems other than PCI to use it more easily. - ACPI device enumeration rework allowing additional kinds of devices to be enumerated via ACPI. From Mika Westerberg, Adrian Hunter, Mathias Nyman, Andy Shevchenko, and Rafael J. Wysocki. - ACPICA update to version 20121018 from Bob Moore and Lv Zheng. - ACPI memory hotplug update from Wen Congyang and Yasuaki Ishimatsu. - Introduction of acpi_handle_<level>() messaging macros and ACPI-based CPU hot-remove support from Toshi Kani. - ACPI EC updates from Feng Tang. - cpufreq updates from Viresh Kumar, Fabio Baltieri and others. - cpuidle changes to quickly notice governor prediction failure from Youquan Song. - Support for using multiple cpuidle drivers at the same time and cpuidle cleanups from Daniel Lezcano. - devfreq updates from Nishanth Menon and others. - cpupower update from Thomas Renninger. - Fixes and small cleanups all over the place. * tag 'pm+acpi-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (196 commits) mmc: sdhci-acpi: enable runtime-pm for device HID INT33C6 ACPI: add Haswell LPSS devices to acpi_platform_device_ids list ACPI: add documentation about ACPI 5 enumeration pnpacpi: fix incorrect TEST_ALPHA() test ACPI / PM: Fix header of acpi_dev_pm_detach() in acpi.h ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000 ACPI : do not use Lid and Sleep button for S5 wakeup ACPI / PNP: Do not crash due to stale pointer use during system resume ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist ACPI: do acpisleep dmi check when CONFIG_ACPI_SLEEP is set spi / ACPI: add ACPI enumeration support gpio / ACPI: add ACPI support PM / devfreq: remove compiler error with module governors (2) cpupower: IvyBridge (0x3a and 0x3e models) support cpupower: Provide -c param for cpupower monitor to schedule process on all cores cpupower tools: Fix warning and a bug with the cpu package count cpupower tools: Fix malloc of cpu_info structure cpupower tools: Fix issues with sysfs_topology_read_file cpupower tools: Fix minor warnings cpupower tools: Update .gitignore for files created in the debug directories ...
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/Kconfig12
-rw-r--r--drivers/mmc/host/Makefile1
-rw-r--r--drivers/mmc/host/sdhci-acpi.c312
3 files changed, 325 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 83eb1e06ff76..bebbe167fd89 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -81,6 +81,18 @@ config MMC_RICOH_MMC
If unsure, say Y.
+config MMC_SDHCI_ACPI
+ tristate "SDHCI support for ACPI enumerated SDHCI controllers"
+ depends on MMC_SDHCI && ACPI
+ help
+ This selects support for ACPI enumerated SDHCI controllers,
+ identified by ACPI Compatibility ID PNP0D40 or specific
+ ACPI Hardware IDs.
+
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
+
config MMC_SDHCI_PLTFM
tristate "SDHCI platform and OF driver helper"
depends on MMC_SDHCI
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 39d5e1234709..c5eddc1b4833 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_MMC_MXS) += mxs-mmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI)) += sdhci-pci-data.o
+obj-$(CONFIG_MMC_SDHCI_ACPI) += sdhci-acpi.o
obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o
obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o
obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
new file mode 100644
index 000000000000..12b0a78497f6
--- /dev/null
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -0,0 +1,312 @@
+/*
+ * Secure Digital Host Controller Interface ACPI driver.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/dma-mapping.h>
+#include <linux/compiler.h>
+#include <linux/stddef.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/acpi.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/pm.h>
+#include <linux/mmc/sdhci.h>
+
+#include "sdhci.h"
+
+enum {
+ SDHCI_ACPI_SD_CD = BIT(0),
+ SDHCI_ACPI_RUNTIME_PM = BIT(1),
+};
+
+struct sdhci_acpi_chip {
+ const struct sdhci_ops *ops;
+ unsigned int quirks;
+ unsigned int quirks2;
+ unsigned long caps;
+ unsigned int caps2;
+ mmc_pm_flag_t pm_caps;
+};
+
+struct sdhci_acpi_slot {
+ const struct sdhci_acpi_chip *chip;
+ unsigned int quirks;
+ unsigned int quirks2;
+ unsigned long caps;
+ unsigned int caps2;
+ mmc_pm_flag_t pm_caps;
+ unsigned int flags;
+};
+
+struct sdhci_acpi_host {
+ struct sdhci_host *host;
+ const struct sdhci_acpi_slot *slot;
+ struct platform_device *pdev;
+ bool use_runtime_pm;
+};
+
+static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag)
+{
+ return c->slot && (c->slot->flags & flag);
+}
+
+static int sdhci_acpi_enable_dma(struct sdhci_host *host)
+{
+ return 0;
+}
+
+static const struct sdhci_ops sdhci_acpi_ops_dflt = {
+ .enable_dma = sdhci_acpi_enable_dma,
+};
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
+ .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
+ .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD,
+ .flags = SDHCI_ACPI_RUNTIME_PM,
+ .pm_caps = MMC_PM_KEEP_POWER,
+};
+
+static const struct acpi_device_id sdhci_acpi_ids[] = {
+ { "INT33C6", (kernel_ulong_t)&sdhci_acpi_slot_int_sdio },
+ { "PNP0D40" },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids);
+
+static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid)
+{
+ const struct acpi_device_id *id;
+
+ for (id = sdhci_acpi_ids; id->id[0]; id++)
+ if (!strcmp(id->id, hid))
+ return (const struct sdhci_acpi_slot *)id->driver_data;
+ return NULL;
+}
+
+static int __devinit sdhci_acpi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ acpi_handle handle = ACPI_HANDLE(dev);
+ struct acpi_device *device;
+ struct sdhci_acpi_host *c;
+ struct sdhci_host *host;
+ struct resource *iomem;
+ resource_size_t len;
+ const char *hid;
+ int err;
+
+ if (acpi_bus_get_device(handle, &device))
+ return -ENODEV;
+
+ if (acpi_bus_get_status(device) || !device->status.present)
+ return -ENODEV;
+
+ hid = acpi_device_hid(device);
+
+ iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!iomem)
+ return -ENOMEM;
+
+ len = resource_size(iomem);
+ if (len < 0x100)
+ dev_err(dev, "Invalid iomem size!\n");
+
+ if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev)))
+ return -ENOMEM;
+
+ host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host));
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ c = sdhci_priv(host);
+ c->host = host;
+ c->slot = sdhci_acpi_get_slot(hid);
+ c->pdev = pdev;
+ c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM);
+
+ platform_set_drvdata(pdev, c);
+
+ host->hw_name = "ACPI";
+ host->ops = &sdhci_acpi_ops_dflt;
+ host->irq = platform_get_irq(pdev, 0);
+
+ host->ioaddr = devm_ioremap_nocache(dev, iomem->start,
+ resource_size(iomem));
+ if (host->ioaddr == NULL) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ if (!dev->dma_mask) {
+ u64 dma_mask;
+
+ if (sdhci_readl(host, SDHCI_CAPABILITIES) & SDHCI_CAN_64BIT) {
+ /* 64-bit DMA is not supported at present */
+ dma_mask = DMA_BIT_MASK(32);
+ } else {
+ dma_mask = DMA_BIT_MASK(32);
+ }
+
+ dev->dma_mask = &dev->coherent_dma_mask;
+ dev->coherent_dma_mask = dma_mask;
+ }
+
+ if (c->slot) {
+ if (c->slot->chip) {
+ host->ops = c->slot->chip->ops;
+ host->quirks |= c->slot->chip->quirks;
+ host->quirks2 |= c->slot->chip->quirks2;
+ host->mmc->caps |= c->slot->chip->caps;
+ host->mmc->caps2 |= c->slot->chip->caps2;
+ host->mmc->pm_caps |= c->slot->chip->pm_caps;
+ }
+ host->quirks |= c->slot->quirks;
+ host->quirks2 |= c->slot->quirks2;
+ host->mmc->caps |= c->slot->caps;
+ host->mmc->caps2 |= c->slot->caps2;
+ host->mmc->pm_caps |= c->slot->pm_caps;
+ }
+
+ err = sdhci_add_host(host);
+ if (err)
+ goto err_free;
+
+ if (c->use_runtime_pm) {
+ pm_suspend_ignore_children(dev, 1);
+ pm_runtime_set_autosuspend_delay(dev, 50);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_enable(dev);
+ }
+
+ return 0;
+
+err_free:
+ platform_set_drvdata(pdev, NULL);
+ sdhci_free_host(c->host);
+ return err;
+}
+
+static int __devexit sdhci_acpi_remove(struct platform_device *pdev)
+{
+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ int dead;
+
+ if (c->use_runtime_pm) {
+ pm_runtime_get_sync(dev);
+ pm_runtime_disable(dev);
+ pm_runtime_put_noidle(dev);
+ }
+
+ dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
+ sdhci_remove_host(c->host, dead);
+ platform_set_drvdata(pdev, NULL);
+ sdhci_free_host(c->host);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static int sdhci_acpi_suspend(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ return sdhci_suspend_host(c->host);
+}
+
+static int sdhci_acpi_resume(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ return sdhci_resume_host(c->host);
+}
+
+#else
+
+#define sdhci_acpi_suspend NULL
+#define sdhci_acpi_resume NULL
+
+#endif
+
+#ifdef CONFIG_PM_RUNTIME
+
+static int sdhci_acpi_runtime_suspend(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ return sdhci_runtime_suspend_host(c->host);
+}
+
+static int sdhci_acpi_runtime_resume(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ return sdhci_runtime_resume_host(c->host);
+}
+
+static int sdhci_acpi_runtime_idle(struct device *dev)
+{
+ return 0;
+}
+
+#else
+
+#define sdhci_acpi_runtime_suspend NULL
+#define sdhci_acpi_runtime_resume NULL
+#define sdhci_acpi_runtime_idle NULL
+
+#endif
+
+static const struct dev_pm_ops sdhci_acpi_pm_ops = {
+ .suspend = sdhci_acpi_suspend,
+ .resume = sdhci_acpi_resume,
+ .runtime_suspend = sdhci_acpi_runtime_suspend,
+ .runtime_resume = sdhci_acpi_runtime_resume,
+ .runtime_idle = sdhci_acpi_runtime_idle,
+};
+
+static struct platform_driver sdhci_acpi_driver = {
+ .driver = {
+ .name = "sdhci-acpi",
+ .owner = THIS_MODULE,
+ .acpi_match_table = sdhci_acpi_ids,
+ .pm = &sdhci_acpi_pm_ops,
+ },
+ .probe = sdhci_acpi_probe,
+ .remove = __devexit_p(sdhci_acpi_remove),
+};
+
+module_platform_driver(sdhci_acpi_driver);
+
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL v2");