diff options
| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2014-08-12 10:45:25 +0100 |
|---|---|---|
| committer | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2014-11-10 07:20:42 +0000 |
| commit | bea99c0bf20fc8319607a7203de65f132e797efb (patch) | |
| tree | 0d9a8d61ef688f9bcf13d7bf985267c5b7eaabaf /arch | |
| parent | 206c5f60a3d902bc4b56dab2de3e88de5eb06108 (diff) | |
ARM:qcom: Add WLAN reset support
This patch adds wlan reset functionality to board specific data as sdio
device does not support platform speific data from DT yet.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-qcom/board.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-qcom/board.c b/arch/arm/mach-qcom/board.c index 6d8bbf7d39d8..226b5c944def 100644 --- a/arch/arm/mach-qcom/board.c +++ b/arch/arm/mach-qcom/board.c @@ -11,6 +11,10 @@ */ #include <linux/init.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/of_platform.h> +#include <linux/delay.h> #include <asm/mach/arch.h> @@ -25,6 +29,31 @@ static const char * const qcom_dt_match[] __initconst = { NULL }; +static void __init qcom_late_init(void) +{ + struct device_node *node; + int reset_gpio, ret; + + for_each_compatible_node(node, NULL, "atheros,ath6kl") { + of_node_put(node); + + reset_gpio = of_get_named_gpio(node, "reset-gpio", 0); + if (reset_gpio < 0) + return; + + ret = gpio_request_one(reset_gpio, + GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "reset"); + if (ret) + return; + + udelay(100); + gpio_set_value(reset_gpio, 0); + udelay(100); + gpio_set_value(reset_gpio, 1); + } +} + DT_MACHINE_START(QCOM_DT, "Qualcomm (Flattened Device Tree)") - .dt_compat = qcom_dt_match, + .init_late = qcom_late_init, + .dt_compat = qcom_dt_match, MACHINE_END |