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Subject[RFC PATCH V3 16/21] mmc: sdhci: UHS-II support, export helper functions to a module
Date
From: AKASHI Takahiro <takahiro.akashi@linaro.org>

Those exported functions will be utilized in the following commit
to implement UHS-II support as a kernel module.

Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
drivers/mmc/host/sdhci.c | 14 ++++++++------
drivers/mmc/host/sdhci.h | 10 ++++++++++
2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index ca3d4a506e01..5d84e61f6ad9 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -57,8 +57,6 @@ EXPORT_SYMBOL_GPL(sdhci_uhs2_ops);
static unsigned int debug_quirks = 0;
static unsigned int debug_quirks2;

-static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
-
static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);

void sdhci_dumpregs(struct sdhci_host *host)
@@ -225,13 +223,14 @@ static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
pm_runtime_get_noresume(host->mmc->parent);
}

-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
{
if (!host->bus_on)
return;
host->bus_on = false;
pm_runtime_put_noidle(host->mmc->parent);
}
+EXPORT_SYMBOL_GPL(sdhci_runtime_pm_bus_off);

void sdhci_reset(struct sdhci_host *host, u8 mask)
{
@@ -1560,12 +1559,13 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
sdhci_led_deactivate(host);
}

-static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
+void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
__sdhci_finish_mrq(host, mrq);

queue_work(host->complete_wq, &host->complete_work);
}
+EXPORT_SYMBOL_GPL(sdhci_finish_mrq);

static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_timeout)
{
@@ -1644,10 +1644,11 @@ static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_timeout)
}
}

-static void sdhci_finish_data(struct sdhci_host *host)
+void sdhci_finish_data(struct sdhci_host *host)
{
__sdhci_finish_data(host, false);
}
+EXPORT_SYMBOL_GPL(sdhci_finish_data);

static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
{
@@ -2991,7 +2992,7 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
}
EXPORT_SYMBOL_GPL(sdhci_execute_tuning);

-static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
+void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
{
/* Host Controller v3.00 defines preset value registers */
if (host->version < SDHCI_SPEC_300)
@@ -3019,6 +3020,7 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
host->preset_enabled = enable;
}
}
+EXPORT_SYMBOL_GPL(sdhci_enable_preset_value);

static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index f6732f33f29f..927aaba28932 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -893,4 +893,14 @@ void sdhci_switch_external_dma(struct sdhci_host *host, bool en);
void sdhci_set_data_timeout_irq(struct sdhci_host *host, bool enable);
void __sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd);

+/* sdhci_uhs2.c needed */
+void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
+void sdhci_finish_data(struct sdhci_host *host);
+void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd, unsigned short vdd2);
+void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd, unsigned short vdd2);
+void sdhci_runtime_pm_bus_off(struct sdhci_host *host);
+void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq);
+
#endif /* __SDHCI_HW_H */
--
2.27.0
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