The patch titled
mmc: make sdhci work with ricoh mmc controller
has been added to the -mm tree. Its filename is
mmc-make-sdhci-work-with-ricoh-mmc-controller.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mmc: make sdhci work with ricoh mmc controller
From: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
The current way of disabling it is not well tested by vendor and has all
kinds of bugs that show up on resume from ram/disk. A very good example
is a dead SDHCI controller.
Old way of disabling is still supported by continuing to use
CONFIG_MMC_RICOH_MMC.
Based on 'http://list.drzeus.cx/pipermail/sdhci-devel/2007-December/002085.html'
Therefore most of the credit for this goes to Andrew de Quincey
Signed-off-by: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
Cc: Andrew de Quincey <adq_dvb@xxxxxxxxxxxxx>
Acked-by: Philip Langdale <philipl@xxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: <linux-mmc@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-pci.c | 41 +++++++++++++++++++++++++++++++++
drivers/mmc/host/sdhci.c | 3 +-
drivers/mmc/host/sdhci.h | 4 +++
3 files changed, 47 insertions(+), 1 deletion(-)
diff -puN drivers/mmc/host/sdhci-pci.c~mmc-make-sdhci-work-with-ricoh-mmc-controller drivers/mmc/host/sdhci-pci.c
--- a/drivers/mmc/host/sdhci-pci.c~mmc-make-sdhci-work-with-ricoh-mmc-controller
+++ a/drivers/mmc/host/sdhci-pci.c
@@ -17,6 +17,7 @@
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
+#include <linux/device.h>
#include <linux/mmc/host.h>
@@ -84,7 +85,30 @@ static int ricoh_probe(struct sdhci_pci_
if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
+ return 0;
+}
+
+static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
+{
+ slot->host->caps =
+ ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
+ & SDHCI_TIMEOUT_CLK_MASK) |
+
+ ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
+ & SDHCI_CLOCK_BASE_MASK) |
+ SDHCI_TIMEOUT_CLK_UNIT |
+ SDHCI_CAN_VDD_330 |
+ SDHCI_CAN_DO_SDMA;
+ return 0;
+}
+
+static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
+{
+ /* Apply a delay to allow controller to settle */
+ /* Otherwise it becomes confused if card state changed
+ during suspend */
+ msleep(500);
return 0;
}
@@ -95,6 +119,15 @@ static const struct sdhci_pci_fixes sdhc
SDHCI_QUIRK_CLOCK_BEFORE_RESET,
};
+static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
+ .probe_slot = ricoh_mmc_probe_slot,
+ .resume = ricoh_mmc_resume,
+ .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
+ SDHCI_QUIRK_CLOCK_BEFORE_RESET |
+ SDHCI_QUIRK_NO_CARD_NO_RESET |
+ SDHCI_QUIRK_MISSING_CAPS
+};
+
static const struct sdhci_pci_fixes sdhci_ene_712 = {
.quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
SDHCI_QUIRK_BROKEN_DMA,
@@ -374,6 +407,14 @@ static const struct pci_device_id pci_id
},
{
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = 0x843,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
+ },
+
+ {
.vendor = PCI_VENDOR_ID_ENE,
.device = PCI_DEVICE_ID_ENE_CB712_SD,
.subvendor = PCI_ANY_ID,
diff -puN drivers/mmc/host/sdhci.c~mmc-make-sdhci-work-with-ricoh-mmc-controller drivers/mmc/host/sdhci.c
--- a/drivers/mmc/host/sdhci.c~mmc-make-sdhci-work-with-ricoh-mmc-controller
+++ a/drivers/mmc/host/sdhci.c
@@ -1688,7 +1688,8 @@ int sdhci_add_host(struct sdhci_host *ho
host->version);
}
- caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
+ sdhci_readl(host, SDHCI_CAPABILITIES);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
diff -puN drivers/mmc/host/sdhci.h~mmc-make-sdhci-work-with-ricoh-mmc-controller drivers/mmc/host/sdhci.h
--- a/drivers/mmc/host/sdhci.h~mmc-make-sdhci-work-with-ricoh-mmc-controller
+++ a/drivers/mmc/host/sdhci.h
@@ -242,6 +242,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26)
/* Controller doesn't have HISPD bit field in HI-SPEED SD card */
#define SDHCI_QUIRK_NO_HISPD_BIT (1<<27)
+/* Controller is missing device caps. Use caps provided by host */
+#define SDHCI_QUIRK_MISSING_CAPS (1<<28)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
@@ -294,6 +296,8 @@ struct sdhci_host {
struct timer_list timer; /* Timer for timeouts */
+ unsigned int caps; /* Alternative capabilities */
+
unsigned long private[0] ____cacheline_aligned;
};
_
Patches currently in -mm which might be from maximlevitsky@xxxxxxxxx are
linux-next.patch
cpuidle-avoid-using-smp_processor_id-in-preemptible-code-nr_iowait_cpu.patch
cpuidle-avoid-using-smp_processor_id-in-preemptible-code-nr_iowait_cpu-v4.patch
cpuidle-avoid-using-smp_processor_id-in-preemptible-code-nr_iowait_cpu-v4-fix.patch
cpuidle-avoid-using-smp_processor_id-in-preemptible-code-nr_iowait_cpu-v4-fix-fix.patch
cpuidle-avoid-using-smp_processor_id-in-preemptible-code-nr_iowait_cpu-v4-fix-fix-fix.patch
maintainers-update-ricoh-smartmedia-xd-driver-file-patterns.patch
mmc-fix-all-hangs-related-to-mmc-sd-card-insert-removal-during-suspend-resume.patch
mmc-fix-all-hangs-related-to-mmc-sd-card-insert-removal-during-suspend-resume-update.patch
mmc-make-sdhci-work-with-ricoh-mmc-controller.patch
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