diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-of-esdhc.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 4e669b4edfc1..e20c00f14109 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -24,6 +24,7 @@ #include <linux/ktime.h> #include <linux/dma-mapping.h> #include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> #include "sdhci-pltfm.h" #include "sdhci-esdhc.h" @@ -81,6 +82,7 @@ struct sdhci_esdhc { bool quirk_limited_clk_division; bool quirk_unreliable_pulse_detection; bool quirk_fixup_tuning; + bool quirk_ignore_data_inhibit; unsigned int peripheral_clock; const struct esdhc_clk_fixup *clk_fixup; u32 div_ratio; @@ -147,6 +149,19 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host, return ret; } + /* + * Some controllers have unreliable Data Line Active + * bit for commands with busy signal. This affects + * Command Inhibit (data) bit. Just ignore it since + * MMC core driver has already polled card status + * with CMD13 after any command with busy siganl. + */ + if ((spec_reg == SDHCI_PRESENT_STATE) && + (esdhc->quirk_ignore_data_inhibit == true)) { + ret = value & ~SDHCI_DATA_INHIBIT; + return ret; + } + ret = value; return ret; } @@ -694,6 +709,9 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask) sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); + if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc")) + mdelay(5); + if (mask & SDHCI_RESET_ALL) { val = sdhci_readl(host, ESDHC_TBCTL); val &= ~ESDHC_TB_EN; @@ -864,6 +882,25 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host, sdhci_set_uhs_signaling(host, timing); } +static u32 esdhc_irq(struct sdhci_host *host, u32 intmask) +{ + u32 command; + + if (of_find_compatible_node(NULL, NULL, + "fsl,p2020-esdhc")) { + command = SDHCI_GET_CMD(sdhci_readw(host, + SDHCI_COMMAND)); + if (command == MMC_WRITE_MULTIPLE_BLOCK && + sdhci_readw(host, SDHCI_BLOCK_COUNT) && + intmask & SDHCI_INT_DATA_END) { + intmask &= ~SDHCI_INT_DATA_END; + sdhci_writel(host, SDHCI_INT_DATA_END, + SDHCI_INT_STATUS); + } + } + return intmask; +} + #ifdef CONFIG_PM_SLEEP static u32 esdhc_proctl; static int esdhc_of_suspend(struct device *dev) @@ -911,6 +948,7 @@ static const struct sdhci_ops sdhci_esdhc_be_ops = { .set_bus_width = esdhc_pltfm_set_bus_width, .reset = esdhc_reset, .set_uhs_signaling = esdhc_set_uhs_signaling, + .irq = esdhc_irq, }; static const struct sdhci_ops sdhci_esdhc_le_ops = { @@ -928,6 +966,7 @@ static const struct sdhci_ops sdhci_esdhc_le_ops = { .set_bus_width = esdhc_pltfm_set_bus_width, .reset = esdhc_reset, .set_uhs_signaling = esdhc_set_uhs_signaling, + .irq = esdhc_irq, }; static const struct sdhci_pltfm_data sdhci_esdhc_be_pdata = { @@ -955,6 +994,7 @@ static struct soc_device_attribute soc_incorrect_hostver[] = { static struct soc_device_attribute soc_fixup_sdhc_clkdivs[] = { { .family = "QorIQ LX2160A", .revision = "1.0", }, + { .family = "QorIQ LX2160A", .revision = "2.0", }, { }, }; @@ -1074,6 +1114,11 @@ static int sdhci_esdhc_probe(struct platform_device *pdev) if (esdhc->vendor_ver > VENDOR_V_22) host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ; + if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc")) { + host->quirks2 |= SDHCI_QUIRK_RESET_AFTER_REQUEST; + host->quirks2 |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; + } + if (of_device_is_compatible(np, "fsl,p5040-esdhc") || of_device_is_compatible(np, "fsl,p5020-esdhc") || of_device_is_compatible(np, "fsl,p4080-esdhc") || @@ -1084,12 +1129,14 @@ static int sdhci_esdhc_probe(struct platform_device *pdev) if (of_device_is_compatible(np, "fsl,ls1021a-esdhc")) host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; + esdhc->quirk_ignore_data_inhibit = false; if (of_device_is_compatible(np, "fsl,p2020-esdhc")) { /* * Freescale messed up with P2020 as it has a non-standard * host control register */ host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL; + esdhc->quirk_ignore_data_inhibit = true; } /* call to generic mmc_of_parse to support additional capabilities */ |