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;
}