From: Drew Fustini <dfustini@baylibre.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Jisheng Zhang <jszhang@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Guo Ren <guoren@kernel.org>,
Fu Wei <wefu@redhat.com>, Conor Dooley <conor@kernel.org>
Cc: linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
Drew Fustini <dfustini@baylibre.com>
Subject: [PATCH v5 2/7] mmc: sdhci: add __sdhci_execute_tuning() to header
Date: Thu, 09 Nov 2023 21:41:12 -0800 [thread overview]
Message-ID: <20231109-th1520-mmc-v5-2-018bd039cf17@baylibre.com> (raw)
In-Reply-To: <20231109-th1520-mmc-v5-0-018bd039cf17@baylibre.com>
Expose __sdhci_execute_tuning() so that it can be called from the
mmc host controller drivers.
In the sdhci-of-dwcmshc driver, sdhci_dwcmshc_th1520_ops sets
platform_execute_tuning to th1520_execute_tuning(). That function has
to manipulate phy registers before tuning can be performed. To avoid
copying the code verbatim from __sdhci_execute_tuning() into
th1520_execute_tuning(), make it possible for __sdhci_execute_tuning()
to be called from sdhci-of-dwcmshc.
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
drivers/mmc/host/sdhci.c | 3 ++-
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index ff41aa56564e..c79f73459915 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2841,7 +2841,7 @@ void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
}
EXPORT_SYMBOL_GPL(sdhci_send_tuning);
-static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
+int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
{
int i;
@@ -2879,6 +2879,7 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
sdhci_reset_tuning(host);
return -EAGAIN;
}
+EXPORT_SYMBOL_GPL(__sdhci_execute_tuning);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index f219bdea8f28..a20864fc0641 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -793,6 +793,7 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
+int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode);
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios);
--
2.34.1
next prev parent reply other threads:[~2023-11-10 6:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-10 5:41 [PATCH v5 0/7] RISC-V: Add MMC support for TH1520 boards Drew Fustini
2023-11-10 5:41 ` [PATCH v5 1/7] dt-bindings: mmc: sdhci-of-dwcmhsc: Add T-Head TH1520 support Drew Fustini
2023-11-10 5:41 ` Drew Fustini [this message]
2023-11-10 5:41 ` [PATCH v5 3/7] mmc: sdhci-of-dwcmshc: Add support for T-Head TH1520 Drew Fustini
2023-11-10 5:41 ` [PATCH v5 4/7] riscv: defconfig: Enable mmc and dma drivers " Drew Fustini
2023-11-10 5:41 ` [PATCH v5 5/7] riscv: dts: thead: Add TH1520 mmc controllers and sdhci clock Drew Fustini
2023-11-10 11:10 ` Krzysztof Kozlowski
2023-11-11 0:07 ` Drew Fustini
2023-11-10 5:41 ` [PATCH v5 6/7] riscv: dts: thead: Enable BeagleV Ahead eMMC and microSD Drew Fustini
2023-11-10 5:41 ` [PATCH v5 7/7] riscv: dts: thead: Enable LicheePi 4A " Drew Fustini
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