| Message ID | 1551504025-3541-3-git-send-email-skomatineni@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V1,01/11] mmc: tegra: fix ddr signaling for non-ddr modes | expand |
On 2/03/19 7:20 AM, Sowjanya Komatineni wrote: > This patch adds support for post tuning process needed for some hosts > to perform after successful completion of HW tuning. > > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> > --- > drivers/mmc/host/sdhci.c | 6 +++++- > drivers/mmc/host/sdhci.h | 1 + > 2 files changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > index e9e919218006..976d4d1e2400 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -2392,8 +2392,12 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) > > ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); > if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) { > - if (ctrl & SDHCI_CTRL_TUNED_CLK) > + if (ctrl & SDHCI_CTRL_TUNED_CLK) { > + if (host->ops->post_tuning) > + host->ops->post_tuning(host); > return 0; /* Success! */ I think you can hook .execute_tuning and just check if the return value is zero before doing post tuning. i.e. something like: host->mmc_host_ops.execute_tuning = tegra_sdhci_execute_tuning; int tegra_sdhci_execute_tuning(blah) { int err; err = sdhci_execute_tuning(blah); if (!err) tegra_sdhci_post_tuning(host); } > + } > + > break; > } > > diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h > index c80e0d6f9b10..236d67778645 100644 > --- a/drivers/mmc/host/sdhci.h > +++ b/drivers/mmc/host/sdhci.h > @@ -639,6 +639,7 @@ struct sdhci_ops { > void (*reset)(struct sdhci_host *host, u8 mask); > int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode); > int (*get_max_tuning_loop_count)(struct sdhci_host *host); > + void (*post_tuning)(struct sdhci_host *host); > void (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); > void (*hw_reset)(struct sdhci_host *host); > void (*adma_workaround)(struct sdhci_host *host, u32 intmask); >
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index e9e919218006..976d4d1e2400 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2392,8 +2392,12 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) { - if (ctrl & SDHCI_CTRL_TUNED_CLK) + if (ctrl & SDHCI_CTRL_TUNED_CLK) { + if (host->ops->post_tuning) + host->ops->post_tuning(host); return 0; /* Success! */ + } + break; } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index c80e0d6f9b10..236d67778645 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -639,6 +639,7 @@ struct sdhci_ops { void (*reset)(struct sdhci_host *host, u8 mask); int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode); int (*get_max_tuning_loop_count)(struct sdhci_host *host); + void (*post_tuning)(struct sdhci_host *host); void (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); void (*hw_reset)(struct sdhci_host *host); void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
This patch adds support for post tuning process needed for some hosts to perform after successful completion of HW tuning. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> --- drivers/mmc/host/sdhci.c | 6 +++++- drivers/mmc/host/sdhci.h | 1 + 2 files changed, 6 insertions(+), 1 deletion(-)