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authorTero Kristo <t-kristo@ti.com>2014-03-04 17:17:06 +0200
committerTero Kristo <t-kristo@ti.com>2014-07-04 17:02:18 +0300
commitbbd36f9f03eceee5c208db83049142171e6338f6 (patch)
tree16a6d579e4938078996158b172f059ea40572389 /arch/arm/mach-omap2/control.c
parentc5180a2b3e26d9b82277986f830c89a50103e65a (diff)
downloadlwn-bbd36f9f03eceee5c208db83049142171e6338f6.tar.gz
lwn-bbd36f9f03eceee5c208db83049142171e6338f6.zip
ARM: OMAP3: control: add API for setting up the modem pads
This patch moves the functionality from PM core to control driver. Signed-off-by: Tero Kristo <t-kristo@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/control.c')
-rw-r--r--arch/arm/mach-omap2/control.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index 83080949d0d3..f432ffc0deb2 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -569,4 +569,30 @@ void omap3_ctrl_set_iva_bootmode_idle(void)
omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
OMAP343X_CONTROL_IVA2_BOOTMOD);
}
+
+/**
+ * omap3_ctrl_setup_d2d_padconf - setup stacked modem pads for idle
+ *
+ * Sets up the pads controlling the stacked modem in such way that the
+ * device can enter idle.
+ */
+void omap3_ctrl_setup_d2d_padconf(void)
+{
+ u16 mask, padconf;
+
+ /*
+ * In a stand alone OMAP3430 where there is not a stacked
+ * modem for the D2D Idle Ack and D2D MStandby must be pulled
+ * high. S CONTROL_PADCONF_SAD2D_IDLEACK and
+ * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up.
+ */
+ mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
+ padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
+ padconf |= mask;
+ omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
+
+ padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
+ padconf |= mask;
+ omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
+}
#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */