[RFC PATCH v3.1 26/27] mmc: sdhci-pci: add UHS-II support framework

AKASHI Takahiro
2020-11-06T02:29:22Z

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>
---
drivers/mmc/host/sdhci-pci-core.c | 16 +++++++++++++++-
drivers/mmc/host/sdhci-pci.h | 3 +++
2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 23da7f7fe093..a896c7b325d0 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -39,6 +39,7 @@

#include "sdhci.h"
#include "sdhci-pci.h"
+#include "sdhci-uhs2.h"

static void sdhci_pci_hw_reset(struct sdhci_host *host);

@@ -2215,7 +2216,10 @@ 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);
@@ -2226,6 +2230,16 @@ 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 d0ed232af0eb..c961ec3cec26 100644
--- a/drivers/mmc/host/sdhci-pci.h
+++ b/drivers/mmc/host/sdhci-pci.h
@@ -137,6 +137,7 @@ 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 *);
@@ -186,6 +187,8 @@ 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
--
2.28.0