diff options
Diffstat (limited to 'arch/arm/mach-tegra/board-kai-sdhci.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-kai-sdhci.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-kai-sdhci.c b/arch/arm/mach-tegra/board-kai-sdhci.c index 0fa39ccf475d..70ba7bcdb202 100644 --- a/arch/arm/mach-tegra/board-kai-sdhci.c +++ b/arch/arm/mach-tegra/board-kai-sdhci.c @@ -28,6 +28,7 @@ #include <mach/irqs.h> #include <mach/iomap.h> #include <mach/sdhci.h> +#include <mach/io_dpd.h> #include "gpio-names.h" #include "board.h" @@ -202,8 +203,21 @@ static int kai_wifi_set_carddetect(int val) static int kai_wifi_power(int power_on) { + struct tegra_io_dpd *sd_dpd; pr_err("Powering %s wifi\n", (power_on ? "on" : "off")); + /* + * FIXME : we need to revisit IO DPD code + * on how should multiple pins under DPD get controlled + * + * kai GPIO WLAN enable is part of SDMMC3 pin group + */ + sd_dpd = tegra_io_dpd_get(&tegra_sdhci_device2.dev); + if (sd_dpd) { + mutex_lock(&sd_dpd->delay_lock); + tegra_io_dpd_disable(sd_dpd); + mutex_unlock(&sd_dpd->delay_lock); + } if (power_on) { gpio_set_value(KAI_WLAN_EN, 1); mdelay(15); @@ -214,6 +228,11 @@ static int kai_wifi_power(int power_on) } else { gpio_set_value(KAI_WLAN_EN, 0); } + if (sd_dpd) { + mutex_lock(&sd_dpd->delay_lock); + tegra_io_dpd_enable(sd_dpd); + mutex_unlock(&sd_dpd->delay_lock); + } return 0; } |