static int sdhci_s3c_resume(struct platform_device *dev) { struct sdhci_host *host = platform_get_drvdata(dev); #if defined(CONFIG_WIMAX_CMC)/* && defined(CONFIG_TARGET_LOCALE_NA)*/ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; u32 ier; #endif #ifdef CONFIG_MACH_MIDAS_01_BD /* turn vdd_tflash off if a card exists*/ if (sdhci_s3c_get_card_exist(host)) sdhci_s3c_vtf_on_off(1); else sdhci_s3c_vtf_on_off(0); #endif sdhci_resume_host(host); #if defined(CONFIG_WIMAX_CMC)/* && defined(CONFIG_TARGET_LOCALE_NA)*/ if (pdata->enable_intr_on_resume) { ier = sdhci_readl(host, SDHCI_INT_ENABLE); ier |= SDHCI_INT_CARD_INT; sdhci_writel(host, ier, SDHCI_INT_ENABLE); sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); } #endif return 0; }
static void sdhci_s3c_notify_change(struct platform_device *dev, int state) { struct sdhci_host *host = platform_get_drvdata(dev); unsigned long flags; if (host) { spin_lock_irqsave(&host->lock, flags); if (state) { dev_dbg(&dev->dev, "card inserted.\n"); pr_info("%s: card inserted.\n", mmc_hostname(host->mmc)); host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; #ifdef CONFIG_MACH_MIDAS_01_BD sdhci_s3c_vtf_on_off(1); #endif } else { dev_dbg(&dev->dev, "card removed.\n"); pr_info("%s: card removed.\n", mmc_hostname(host->mmc)); host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; #ifdef CONFIG_MACH_MIDAS_01_BD sdhci_s3c_vtf_on_off(0); #endif } tasklet_schedule(&host->card_tasklet); spin_unlock_irqrestore(&host->lock, flags); } }
static int sdhci_s3c_resume(struct platform_device *dev) { struct sdhci_host *host = platform_get_drvdata(dev); #ifdef CONFIG_MACH_MIDAS_01_BD /* turn vdd_tflash off if a card exists*/ if (sdhci_s3c_get_card_exist(host)) sdhci_s3c_vtf_on_off(1); else sdhci_s3c_vtf_on_off(0); #endif sdhci_resume_host(host); return 0; }
static int sdhci_s3c_suspend(struct platform_device *dev, pm_message_t pm) { struct sdhci_host *host = platform_get_drvdata(dev); sdhci_suspend_host(host, pm); #ifdef CONFIG_MACH_MIDAS_01_BD /* turn vdd_tflash off */ sdhci_s3c_vtf_on_off(0); #endif return 0; }
static int __devinit sdhci_s3c_probe(struct platform_device *pdev) { struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev; struct sdhci_host *host; struct sdhci_s3c *sc; struct resource *res; int ret, irq, ptr, clks; if (!pdata) { dev_err(dev, "no device data specified\n"); return -ENOENT; } irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(dev, "no irq specified\n"); return irq; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(dev, "no memory specified\n"); return -ENOENT; } host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c)); if (IS_ERR(host)) { dev_err(dev, "sdhci_alloc_host() failed\n"); return PTR_ERR(host); } sc = sdhci_priv(host); sc->host = host; sc->pdev = pdev; sc->pdata = pdata; sc->ext_cd_gpio = -1; /* invalid gpio number */ platform_set_drvdata(pdev, host); sc->clk_io = clk_get(dev, "hsmmc"); if (IS_ERR(sc->clk_io)) { dev_err(dev, "failed to get io clock\n"); ret = PTR_ERR(sc->clk_io); goto err_io_clk; } /* enable the local io clock and keep it running for the moment. */ clk_enable(sc->clk_io); for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) { struct clk *clk; char *name = pdata->clocks[ptr]; if (name == NULL) continue; clk = clk_get(dev, name); if (IS_ERR(clk)) { dev_err(dev, "failed to get clock %s\n", name); continue; } clks++; sc->clk_bus[ptr] = clk; /* * save current clock index to know which clock bus * is used later in overriding functions. */ sc->cur_clk = ptr; clk_enable(clk); dev_info(dev, "clock source %d: %s (%ld Hz)\n", ptr, name, clk_get_rate(clk)); } if (clks == 0) { dev_err(dev, "failed to find any bus clocks\n"); ret = -ENOENT; goto err_no_busclks; } sc->ioarea = request_mem_region(res->start, resource_size(res), mmc_hostname(host->mmc)); if (!sc->ioarea) { dev_err(dev, "failed to reserve register area\n"); ret = -ENXIO; goto err_req_regs; } host->ioaddr = ioremap_nocache(res->start, resource_size(res)); if (!host->ioaddr) { dev_err(dev, "failed to map registers\n"); ret = -ENXIO; goto err_req_regs; } /* Ensure we have minimal gpio selected CMD/CLK/Detect */ if (pdata->cfg_gpio) pdata->cfg_gpio(pdev, pdata->max_width); host->hw_name = "samsung-hsmmc"; host->ops = &sdhci_s3c_ops; host->quirks = 0; host->irq = irq; /* Setup quirks for the controller */ host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC; host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT; #ifndef CONFIG_MMC_SDHCI_S3C_DMA /* we currently see overruns on errors, so disable the SDMA * support as well. */ host->quirks |= SDHCI_QUIRK_BROKEN_DMA; #endif /* CONFIG_MMC_SDHCI_S3C_DMA */ /* It seems we do not get an DATA transfer complete on non-busy * transfers, not sure if this is a problem with this specific * SDHCI block, or a missing configuration that needs to be set. */ host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ; /* This host supports the Auto CMD12 */ host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; if (pdata->cd_type == S3C_SDHCI_CD_NONE) host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT) host->mmc->caps = MMC_CAP_NONREMOVABLE; if (pdata->host_caps) host->mmc->caps |= pdata->host_caps; /* if vmmc_name is in pdata */ if (pdata->vmmc_name) host->vmmc_name = pdata->vmmc_name; host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE); /* HSMMC on Samsung SoCs uses SDCLK as timeout clock */ host->quirks |= SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK; /* * If controller does not have internal clock divider, * we can use overriding functions instead of default. */ if (pdata->clk_type) { sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock; sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock; sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock; } /* It supports additional host capabilities if needed */ if (pdata->host_caps) host->mmc->caps |= pdata->host_caps; /* for BCM WIFI */ if (pdata->pm_flags) host->mmc->pm_flags |= pdata->pm_flags; #ifdef CONFIG_MACH_MIDAS_01_BD /* before calling shhci_add_host, you should turn vdd_tflash on */ sdhci_s3c_vtf_on_off(1); #endif /* To turn on vmmc regulator only if sd card exists, GPIO pin for card detection should be initialized. Moved from sdhci_s3c_setup_card_detect_gpio() function */ if (pdata->cd_type == S3C_SDHCI_CD_GPIO && gpio_is_valid(pdata->ext_cd_gpio)) { if (gpio_request(pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) { sc->ext_cd_gpio = pdata->ext_cd_gpio; sc->ext_cd_gpio_invert = pdata->ext_cd_gpio_invert; mmc_host_sd_set_present(host->mmc); if (sd_detection_cmd_dev == NULL && sc->ext_cd_gpio) { sd_detection_cmd_dev = device_create(sec_class, NULL, 0, NULL, "sdcard"); if (IS_ERR(sd_detection_cmd_dev)) pr_err("Fail to create sysfs dev\n"); if (device_create_file(sd_detection_cmd_dev, &dev_attr_status) < 0) pr_err("Fail to create sysfs file\n"); dev_set_drvdata(sd_detection_cmd_dev, sc); } #ifdef CONFIG_MIDAS_COMMON /* set TF_EN gpio as OUTPUT */ gpio_request(GPIO_TF_EN, "TF_EN"); gpio_direction_output(GPIO_TF_EN, 1); s3c_gpio_cfgpin(GPIO_TF_EN, S3C_GPIO_SFN(1)); s3c_gpio_setpull(GPIO_TF_EN, S3C_GPIO_PULL_NONE); #endif } else { dev_err(dev, "cannot request gpio for card detect\n"); } } #ifdef CONFIG_MACH_PX /* * sdhc which has S3C_SDHCI_CD_EXTERNAL flag means a wifi * on PX projects. */ if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL) { /* w/a for h/w sdio interrupt */ host->quirks |= SDHCI_QUIRK_RESET_AFTER_REQUEST; } #endif ret = sdhci_add_host(host); if (ret) { dev_err(dev, "sdhci_add_host() failed\n"); goto err_add_host; } /* if it is set SDHCI_QUIRK_BROKEN_CARD_DETECTION before calling sdhci_add_host, in sdhci_add_host, MMC_CAP_NEEDS_POLL flag will be set. The flag S3C_SDHCI_CD_PERMANENT dose not need to detect a card by polling. */ if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT || \ pdata->cd_type == S3C_SDHCI_CD_GPIO) host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; /* The following two methods of card detection might call sdhci_s3c_notify_change() immediately, so they can be called only after sdhci_add_host(). Setup errors are ignored. */ if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_init) { pdata->ext_cd_init(&sdhci_s3c_notify_change); #ifdef CONFIG_MACH_PX if (pdata->ext_pdev) pdata->ext_pdev(pdev); #endif } #ifdef CONFIG_MACH_U1_NA_SPR if (pdata->cd_type == S3C_SDHCI_CD_GPIO && pdata->ext_cd_init) pdata->ext_cd_init(&sdhci_s3c_notify_change); #endif if (pdata->cd_type == S3C_SDHCI_CD_GPIO && gpio_is_valid(pdata->ext_cd_gpio)) sdhci_s3c_setup_card_detect_gpio(sc); #ifdef CONFIG_MACH_MIDAS_01_BD /* if card dose not exist, it should turn vtf off */ if (pdata->cd_type == S3C_SDHCI_CD_GPIO && sdhci_s3c_get_card_exist(host)) sdhci_s3c_vtf_on_off(1); else sdhci_s3c_vtf_on_off(0); #endif return 0; err_add_host: release_resource(sc->ioarea); kfree(sc->ioarea); err_req_regs: for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { clk_disable(sc->clk_bus[ptr]); clk_put(sc->clk_bus[ptr]); } err_no_busclks: clk_disable(sc->clk_io); clk_put(sc->clk_io); err_io_clk: sdhci_free_host(host); return ret; }