1 files changed, 57 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-am335x-3.2.0-psp04.06.00.08/0001-am335x-enable-pullup-on-the-WLAN-enable-pin-fo.patch b/recipes-kernel/linux/linux-am335x-3.2.0-psp04.06.00.08/0001-am335x-enable-pullup-on-the-WLAN-enable-pin-fo.patch
new file mode 100644
index 00000000..863fe378
--- /dev/null
+++ b/recipes-kernel/linux/linux-am335x-3.2.0-psp04.06.00.08/0001-am335x-enable-pullup-on-the-WLAN-enable-pin-fo.patch
@@ -0,0 +1,57 @@
+From f69ffbef6793b7238a8518481735fd53326e0cdf Mon Sep 17 00:00:00 2001
+From: Vita Preskovsky <vitap@ti.com>
+Date: Tue, 24 Jul 2012 20:02:28 +0300
+Subject: [PATCH] am335x: enable pullup on the WLAN enable pin for keeping wlan
+
+  * Enable pullup on the WLAN enable pin for keeping wlan active
+    during suspend in wowlan mode. The fix is relevant only in the case
+    of am335x-SK board.
+
+
+Signed-off-by: Vita Preskovsky <vitap@ti.com>
+---
+ arch/arm/mach-omap2/board-am335xevm.c |   22 ++++++++++++++++++++++
+ 1 files changed, 22 insertions(+), 0 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-am335xevm.c b/arch/arm/mach-omap2/board-am335xevm.c
+index f68710c..f263f84 100644
+--- a/arch/arm/mach-omap2/board-am335xevm.c
++++ b/arch/arm/mach-omap2/board-am335xevm.c
+@@ -1673,13 +1673,35 @@ static void wl12xx_bluetooth_enable(void)
+        gpio_direction_output(am335xevm_wlan_data.bt_enable_gpio, 0);
+ }
+
++#define AM33XX_CTRL_REGADDR(reg)                                       \
++               AM33XX_L4_WK_IO_ADDRESS(AM33XX_SCM_BASE + (reg))
++
++/* wlan enable pin */
++#define AM33XX_CONTROL_PADCONF_GPMC_CSN0_OFFSET                0x087C
+ static int wl12xx_set_power(struct device *dev, int slot, int on, int vdd)
+ {
++       int pad_mux_value;
++
+        if (on) {
+                gpio_direction_output(am335xevm_wlan_data.wlan_enable_gpio, 1);
++
++               /* Enable pullup on the WLAN enable pin for keeping wlan active during suspend
++                  in wowlan mode */
++               if ( am335x_evm_get_id() == EVM_SK ) {
++                       pad_mux_value = readl(AM33XX_CTRL_REGADDR(AM33XX_CONTROL_PADCONF_GPMC_CSN0_OFFSET));
++                       pad_mux_value &= (~AM33XX_PULL_DISA);
++                       writel(pad_mux_value, AM33XX_CTRL_REGADDR(AM33XX_CONTROL_PADCONF_GPMC_CSN0_OFFSET));
++               }
++
+                mdelay(70);
+        } else {
+                gpio_direction_output(am335xevm_wlan_data.wlan_enable_gpio, 0);
++               /* Disable pullup on the WLAN enable when WLAN is off */
++               if ( am335x_evm_get_id() == EVM_SK ) {
++                       pad_mux_value = readl(AM33XX_CTRL_REGADDR(AM33XX_CONTROL_PADCONF_GPMC_CSN0_OFFSET));
++                       pad_mux_value |= AM33XX_PULL_DISA;
++                       writel(pad_mux_value, AM33XX_CTRL_REGADDR(AM33XX_CONTROL_PADCONF_GPMC_CSN0_OFFSET));
++               }
+        }
+
+        return 0;
+--
+1.7.0.4