[PATCH 03/11] mmc: host: omap_hsmmc: program HCTL based on signal_voltage set by mmc core
From: Kishon Vijay Abraham I <hidden>
Date: 2015-07-30 07:47:17
Also in:
linux-mmc, linux-omap, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, omap hs mmc support, the rest · Maintainers:
Ulf Hansson, Linus Torvalds
HCTL is now set based on ios.signal_voltage set by mmc core and not hardcoded to 3V0 if OMAP_HSMMC_SUPPORTS_DUAL_VOLT is set. If OMAP_HSMMC_SUPPORTS_DUAL_VOLT is set, it means HCTL can be set to either 3V0 or 1V8. And it should be set to 3V0 or 1V8 depending on ios.signal_voltage. Also it is now set on power mode status being changed to MMC_POWER_ON. Signed-off-by: Kishon Vijay Abraham I <redacted> --- drivers/mmc/host/omap_hsmmc.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 2dfef11..306e5c0 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c@@ -228,6 +228,7 @@ struct omap_mmc_of_data { }; static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host); +static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host, int iov); static int omap_hsmmc_card_detect(struct device *dev) {
@@ -1665,6 +1666,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) mmc_pdata(host)->set_power(host->dev, 1, ios->vdd); break; case MMC_POWER_ON: + omap_hsmmc_conf_bus_power(host, ios->signal_voltage); do_send_init_stream = 1; break; }
@@ -1827,17 +1829,12 @@ static void omap_hsmmc_set_capabilities(struct omap_hsmmc_host *host) OMAP_HSMMC_WRITE(host->base, CAPA, val); } -static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host) +static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host, int iov) { u32 hctl, value; - /* Only MMC1 supports 3.0V */ - if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) - hctl = SDVS30; - else - hctl = SDVS18; - value = OMAP_HSMMC_READ(host->base, HCTL) & ~SDVS_MASK; + hctl = (iov == MMC_SIGNAL_VOLTAGE_180) ? SDVS18 : SDVS30; OMAP_HSMMC_WRITE(host->base, HCTL, value | hctl); /* Set SD bus power bit */
@@ -2143,7 +2140,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev) mmc->pm_caps |= mmc_pdata(host)->pm_caps; omap_hsmmc_set_capabilities(host); - omap_hsmmc_conf_bus_power(host); if (!pdev->dev.of_node) { res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
@@ -2318,6 +2314,7 @@ static int omap_hsmmc_suspend(struct device *dev) static int omap_hsmmc_resume(struct device *dev) { struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct mmc_ios *ios; if (!host) return 0;
@@ -2327,8 +2324,9 @@ static int omap_hsmmc_resume(struct device *dev) if (host->dbclk) clk_prepare_enable(host->dbclk); + ios = &host->mmc->ios; if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) - omap_hsmmc_conf_bus_power(host); + omap_hsmmc_conf_bus_power(host, ios->signal_voltage); omap_hsmmc_protect_card(host); pm_runtime_mark_last_busy(host->dev);
--
1.7.9.5