[PATCH V20 20/22] mmc: sdhci-pci: add UHS-II support framework

Victor Shih
2024-09-05T10:21:33Z

This patch prepares for adding UHS-II support at a specific UHS-II
capable sdhci-pci controller, GL9755 for now.

Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Victor Shih <victor.shih@genesyslogic.com.tw>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
---

Updates in V8:
- Add config select MMC_SDHCI_UHS2 in Kconfig.

---

drivers/mmc/host/Kconfig | 1 +
drivers/mmc/host/sdhci-pci-core.c | 16 +++++++++++++++-
drivers/mmc/host/sdhci-pci.h | 3 +++
3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index f636af8a98df..70d37a8c3613 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -111,6 +111,7 @@ config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
select MMC_CQHCI
+ select MMC_SDHCI_UHS2
select IOSF_MBI if X86
select MMC_SDHCI_IO_ACCESSORS
help
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index ed45ed0bdafd..2b300bc4a701 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -40,6 +40,7 @@
#include "sdhci.h"
#include "sdhci-cqhci.h"
#include "sdhci-pci.h"
+#include "sdhci-uhs2.h"

static void sdhci_pci_hw_reset(struct sdhci_host *host);

@@ -2181,7 +2182,10 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
if (scratch == (u32)-1)
dead = 1;

- sdhci_remove_host(slot->host, dead);
+ if (slot->chip->fixes && slot->chip->fixes->remove_host)
+ slot->chip->fixes->remove_host(slot, dead);
+ else
+ sdhci_remove_host(slot->host, dead);

if (slot->chip->fixes && slot->chip->fixes->remove_slot)
slot->chip->fixes->remove_slot(slot, dead);
@@ -2189,6 +2193,16 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
sdhci_free_host(slot->host);
}

+int sdhci_pci_uhs2_add_host(struct sdhci_pci_slot *slot)
+{
+ return sdhci_uhs2_add_host(slot->host);
+}
+
+void sdhci_pci_uhs2_remove_host(struct sdhci_pci_slot *slot, int dead)
+{
+ sdhci_uhs2_remove_host(slot->host, dead);
+}
+
static void sdhci_pci_runtime_pm_allow(struct device *dev)
{
pm_suspend_ignore_children(dev, 1);
diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h
index 153704f812ed..e807c039a8b1 100644
--- a/drivers/mmc/host/sdhci-pci.h
+++ b/drivers/mmc/host/sdhci-pci.h
@@ -145,6 +145,7 @@ struct sdhci_pci_fixes {
int (*probe_slot) (struct sdhci_pci_slot *);
int (*add_host) (struct sdhci_pci_slot *);
void (*remove_slot) (struct sdhci_pci_slot *, int);
+ void (*remove_host) (struct sdhci_pci_slot *, int);

#ifdef CONFIG_PM_SLEEP
int (*suspend) (struct sdhci_pci_chip *);
@@ -189,6 +190,8 @@ static inline void *sdhci_pci_priv(struct sdhci_pci_slot *slot)
return (void *)slot->private;
}

+int sdhci_pci_uhs2_add_host(struct sdhci_pci_slot *slot);
+void sdhci_pci_uhs2_remove_host(struct sdhci_pci_slot *slot, int dead);
#ifdef CONFIG_PM_SLEEP
int sdhci_pci_resume_host(struct sdhci_pci_chip *chip);
#endif
--
2.25.1