| Message ID | 1484031652-12059-4-git-send-email-riteshh@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 10/01/17 09:00, Ritesh Harjani wrote: > Factor out sdhci_msm_hs400 used for DLL calibration in HS400 > modes. This function will be needed for enhanced_strobe as well. > > Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> > --- > drivers/mmc/host/sdhci-msm.c | 32 ++++++++++++++++++++++++++------ > 1 file changed, 26 insertions(+), 6 deletions(-) > > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c > index 3fc496e..5a37c29 100644 > --- a/drivers/mmc/host/sdhci-msm.c > +++ b/drivers/mmc/host/sdhci-msm.c > @@ -884,6 +884,28 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) > return rc; > } > > +/* > + * sdhci_msm_hs400 - Calibrate the DLL for HS400 bus speed mode operation. > + * DLL operation is only needed for clock > 100MHz. For clock <= 100MHz > + * fixed feedback clock is used. > + */ > +static void sdhci_msm_hs400(struct sdhci_host *host, struct mmc_ios *ios) > +{ > + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); > + struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host); > + int ret; > + > + if (host->clock > CORE_FREQ_100MHZ && > + msm_host->tuning_done && !msm_host->calibration_done) { > + ret = sdhci_msm_hs400_dll_calibration(host); > + if (!ret) > + msm_host->calibration_done = true; > + else > + pr_err("%s: Failed to calibrate DLL for hs400 mode (%d)\n", > + mmc_hostname(host->mmc), ret); > + } > +} > + > static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, > unsigned int uhs) > { > @@ -952,12 +974,10 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, > sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); > > spin_unlock_irq(&host->lock); > - /* CDCLP533 HW calibration is only required for HS400 mode*/ > - if (host->clock > CORE_FREQ_100MHZ && > - msm_host->tuning_done && !msm_host->calibration_done && > - mmc->ios.timing == MMC_TIMING_MMC_HS400) > - if (!sdhci_msm_hs400_dll_calibration(host)) > - msm_host->calibration_done = true; > + > + if (mmc->ios.timing == MMC_TIMING_MMC_HS400) > + sdhci_msm_hs400(host, &mmc->ios); > + > spin_lock_irq(&host->lock); > } > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 3fc496e..5a37c29 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -884,6 +884,28 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) return rc; } +/* + * sdhci_msm_hs400 - Calibrate the DLL for HS400 bus speed mode operation. + * DLL operation is only needed for clock > 100MHz. For clock <= 100MHz + * fixed feedback clock is used. + */ +static void sdhci_msm_hs400(struct sdhci_host *host, struct mmc_ios *ios) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host); + int ret; + + if (host->clock > CORE_FREQ_100MHZ && + msm_host->tuning_done && !msm_host->calibration_done) { + ret = sdhci_msm_hs400_dll_calibration(host); + if (!ret) + msm_host->calibration_done = true; + else + pr_err("%s: Failed to calibrate DLL for hs400 mode (%d)\n", + mmc_hostname(host->mmc), ret); + } +} + static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) { @@ -952,12 +974,10 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); spin_unlock_irq(&host->lock); - /* CDCLP533 HW calibration is only required for HS400 mode*/ - if (host->clock > CORE_FREQ_100MHZ && - msm_host->tuning_done && !msm_host->calibration_done && - mmc->ios.timing == MMC_TIMING_MMC_HS400) - if (!sdhci_msm_hs400_dll_calibration(host)) - msm_host->calibration_done = true; + + if (mmc->ios.timing == MMC_TIMING_MMC_HS400) + sdhci_msm_hs400(host, &mmc->ios); + spin_lock_irq(&host->lock); }
Factor out sdhci_msm_hs400 used for DLL calibration in HS400 modes. This function will be needed for enhanced_strobe as well. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> --- drivers/mmc/host/sdhci-msm.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-)