From 8d9af88f55be89fa4c897ded3204ef12c947731e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 22 Dec 2010 18:42:35 -0800 Subject: omap2+: Allow hwmod state changes to mux pads based on the state changes Allow hwmod state changes to mux pads based on the state changes. By default, only enable and disable the pads. In some rare cases dynamic remuxing for the idles states is needed, this can be done by passing the enable, idle, and off pads from board-*.c file along with OMAP_DEVICE_PAD_REMUX flag. Thanks to Paul Walmsley for the comments on the hwmod related changes. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/omap_hwmod.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-omap2/omap_hwmod.c') diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 77a8be64cfa..e282e35769f 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -116,7 +116,6 @@ * - Open Core Protocol Specification 2.2 * * To do: - * - pin mux handling * - handle IO mapping * - bus throughput & module latency measurement code * @@ -149,6 +148,7 @@ #include "cm44xx.h" #include "prm2xxx_3xxx.h" #include "prm44xx.h" +#include "mux.h" /* Maximum microseconds to wait for OMAP module to softreset */ #define MAX_MODULE_SOFTRESET_WAIT 10000 @@ -1229,7 +1229,9 @@ static int _enable(struct omap_hwmod *oh) oh->_state == _HWMOD_STATE_DISABLED) && oh->rst_lines_cnt == 1) _deassert_hardreset(oh, oh->rst_lines[0].name); - /* XXX mux balls */ + /* Mux pins for device runtime if populated */ + if (oh->mux) + omap_hwmod_mux(oh->mux, _HWMOD_STATE_ENABLED); _add_initiator_dep(oh, mpu_oh); _enable_clocks(oh); @@ -1276,6 +1278,10 @@ static int _idle(struct omap_hwmod *oh) _del_initiator_dep(oh, mpu_oh); _disable_clocks(oh); + /* Mux pins for device idle if populated */ + if (oh->mux) + omap_hwmod_mux(oh->mux, _HWMOD_STATE_IDLE); + oh->_state = _HWMOD_STATE_IDLE; return 0; @@ -1334,7 +1340,9 @@ static int _shutdown(struct omap_hwmod *oh) } /* XXX Should this code also force-disable the optional clocks? */ - /* XXX mux any associated balls to safe mode */ + /* Mux pins to safe mode or use populated off mode values */ + if (oh->mux) + omap_hwmod_mux(oh->mux, _HWMOD_STATE_DISABLED); oh->_state = _HWMOD_STATE_DISABLED; -- cgit v1.2.3-70-g09d2