From mboxrd@z Thu Jan 1 00:00:00 1970 From: b29396@freescale.com (Dong Aisheng) Date: Wed, 4 Sep 2013 20:54:10 +0800 Subject: [PATCH 1/8] mmc: sdhci: add hooks for platform specific tuning In-Reply-To: <1378299257-2980-1-git-send-email-b29396@freescale.com> References: <1378299257-2980-1-git-send-email-b29396@freescale.com> Message-ID: <1378299257-2980-2-git-send-email-b29396@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The tuning of some platforms may not follow the standard host control spec v3.0, e.g. Freescale uSDHC on i.MX6Q/DL. Add a hook here to allow execute platform specific tuning instead of standard host controller tuning. Signed-off-by: Dong Aisheng --- drivers/mmc/host/sdhci.c | 8 ++++++++ drivers/mmc/host/sdhci.h | 1 + 2 files changed, 9 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index dd2c083..2890cfd 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1875,6 +1875,14 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) return 0; } + if (host->ops->platform_execute_tuning) { + spin_unlock(&host->lock); + enable_irq(host->irq); + err = host->ops->platform_execute_tuning(host, opcode); + sdhci_runtime_pm_put(host); + return err; + } + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); /* diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index b037f18..976c14b 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -288,6 +288,7 @@ struct sdhci_ops { unsigned int (*get_ro)(struct sdhci_host *host); void (*platform_reset_enter)(struct sdhci_host *host, u8 mask); void (*platform_reset_exit)(struct sdhci_host *host, u8 mask); + int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode); int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); void (*hw_reset)(struct sdhci_host *host); void (*platform_suspend)(struct sdhci_host *host); -- 1.7.1