diff options
| author | Pavan Kunapuli <pkunapuli@nvidia.com> | 2011-05-26 16:50:29 +0530 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2011-05-27 19:55:24 -0700 |
| commit | 57710f94c9bb70a2a4265c751729ae579b3adf16 (patch) | |
| tree | 81b090b0a7a25e1290a5a11ceab4d015f4690598 | |
| parent | 51d5a67434bb892edac6dfb171438eb7c6cd0c3f (diff) | |
sdhci: tegra: Update card present status
Based on the polarity of the card detect gpio,
update the card present status for sd cards to
be properly detected and enumerated.
Bug 831409
Change-Id: I7d0514ba61a1f418ecf2603e12fa99fb9d748dbe
Reviewed-on: http://git-master/r/33124
Reviewed-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Tested-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Joseph Lehrer <jlehrer@nvidia.com>
Tested-by: Joseph Lehrer <jlehrer@nvidia.com>
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 762b32bb00ac..977b6dde22d7 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -42,12 +42,17 @@ struct tegra_sdhci_host { u32 sdhci_ints; int wp_gpio; int card_present; + int cd_gpio; + int cd_gpio_polarity; }; static irqreturn_t carddetect_irq(int irq, void *data) { struct sdhci_host *sdhost = (struct sdhci_host *)data; + struct tegra_sdhci_host *host = sdhci_priv(sdhost); + host->card_present = + (gpio_get_value(host->cd_gpio) == host->cd_gpio_polarity); tasklet_schedule(&sdhost->card_tasklet); return IRQ_HANDLED; }; @@ -146,6 +151,8 @@ static int __devinit tegra_sdhci_probe(struct platform_device *pdev) host->sdhci = sdhci; host->card_always_on = (plat->power_gpio == -1) ? 1 : 0; host->wp_gpio = plat->wp_gpio; + host->cd_gpio = plat->cd_gpio; + host->cd_gpio_polarity = plat->cd_gpio_polarity; host->clk = clk_get(&pdev->dev, plat->clk_id); if (IS_ERR(host->clk)) { @@ -200,6 +207,8 @@ static int __devinit tegra_sdhci_probe(struct platform_device *pdev) if (rc) goto err_remove_host; + host->card_present = + (gpio_get_value(plat->cd_gpio) == host->cd_gpio_polarity); } else if (plat->register_status_notify) { plat->register_status_notify( tegra_sdhci_status_notify_cb, sdhci); |