diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-spear.c | 79 |
1 files changed, 17 insertions, 62 deletions
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c index 676df4623057..0316dec3f006 100644 --- a/drivers/mmc/host/sdhci-spear.c +++ b/drivers/mmc/host/sdhci-spear.c @@ -27,6 +27,7 @@ #include <linux/slab.h> #include <linux/mmc/host.h> #include <linux/mmc/sdhci-spear.h> +#include <linux/mmc/slot-gpio.h> #include <linux/io.h> #include "sdhci.h" @@ -40,28 +41,6 @@ static const struct sdhci_ops sdhci_pltfm_ops = { /* Nothing to do for now. */ }; -/* gpio card detection interrupt handler */ -static irqreturn_t sdhci_gpio_irq(int irq, void *dev_id) -{ - struct platform_device *pdev = dev_id; - struct sdhci_host *host = platform_get_drvdata(pdev); - struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev); - unsigned long gpio_irq_type; - int val; - - val = gpio_get_value(sdhci->data->card_int_gpio); - - /* val == 1 -> card removed, val == 0 -> card inserted */ - /* if card removed - set irq for low level, else vice versa */ - gpio_irq_type = val ? IRQF_TRIGGER_LOW : IRQF_TRIGGER_HIGH; - irq_set_irq_type(irq, gpio_irq_type); - - /* inform sdhci driver about card insertion/removal */ - tasklet_schedule(&host->card_tasklet); - - return IRQ_HANDLED; -} - #ifdef CONFIG_OF static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev) { @@ -152,6 +131,22 @@ static int sdhci_probe(struct platform_device *pdev) sdhci->data = dev_get_platdata(&pdev->dev); } + /* + * It is optional to use GPIOs for sdhci card detection. If + * sdhci->data is NULL, then use original sdhci lines otherwise + * GPIO lines. We use the built-in GPIO support for this. + */ + if (sdhci->data && sdhci->data->card_int_gpio >= 0) { + ret = mmc_gpio_request_cd(host->mmc, + sdhci->data->card_int_gpio, 0); + if (ret < 0) { + dev_dbg(&pdev->dev, + "failed to request card-detect gpio%d\n", + sdhci->data->card_int_gpio); + goto disable_clk; + } + } + ret = sdhci_add_host(host); if (ret) { dev_dbg(&pdev->dev, "error adding host\n"); @@ -160,48 +155,8 @@ static int sdhci_probe(struct platform_device *pdev) platform_set_drvdata(pdev, host); - /* - * It is optional to use GPIOs for sdhci Power control & sdhci card - * interrupt detection. If sdhci->data is NULL, then use original sdhci - * lines otherwise GPIO lines. - * If GPIO is selected for power control, then power should be disabled - * after card removal and should be enabled when card insertion - * interrupt occurs - */ - if (!sdhci->data) - return 0; - - if (sdhci->data->card_int_gpio >= 0) { - ret = devm_gpio_request(&pdev->dev, sdhci->data->card_int_gpio, - "sdhci"); - if (ret < 0) { - dev_dbg(&pdev->dev, "gpio request fail: %d\n", - sdhci->data->card_int_gpio); - goto set_drvdata; - } - - ret = gpio_direction_input(sdhci->data->card_int_gpio); - if (ret) { - dev_dbg(&pdev->dev, "gpio set direction fail: %d\n", - sdhci->data->card_int_gpio); - goto set_drvdata; - } - ret = devm_request_irq(&pdev->dev, - gpio_to_irq(sdhci->data->card_int_gpio), - sdhci_gpio_irq, IRQF_TRIGGER_LOW, - mmc_hostname(host->mmc), pdev); - if (ret) { - dev_dbg(&pdev->dev, "gpio request irq fail: %d\n", - sdhci->data->card_int_gpio); - goto set_drvdata; - } - - } - return 0; -set_drvdata: - sdhci_remove_host(host, 1); disable_clk: clk_disable_unprepare(sdhci->clk); err_host: |