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| author | Tony Lindgren <tony@atomide.com> | 2012-10-09 11:07:29 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2012-10-09 11:07:29 -0700 |
| commit | eb20f31f6e7d3ac19738e5a45df9b09b25381e73 (patch) | |
| tree | beb9158583964f44fcbd0879ad9394fb5dd8c55c /arch/arm/mach-omap2/omap_hwmod.c | |
| parent | 0e51793e162ca432fc5f04178cf82b80a92c2659 (diff) | |
| parent | e9332b6eed82973a8f75f1f3d57babaa331d703c (diff) | |
| download | olio-linux-3.10-eb20f31f6e7d3ac19738e5a45df9b09b25381e73.tar.xz olio-linux-3.10-eb20f31f6e7d3ac19738e5a45df9b09b25381e73.zip | |
Merge tag 'omap-fixes-a-for-pre3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.7-rc1/fixes-hwmod-clock
Some OMAP fixes for the 3.7 merge window, fixing mismerges, branch
integration issues, and bugs after the arm-soc merges.
Basic test logs are available here:
http://www.pwsan.com/omap/testlogs/devel_late_fixes_3.7/20121009084003/
N800 isn't booting; this is a problem present in the base commit and
is due to serial driver breakage:
http://www.spinics.net/lists/arm-kernel/msg196034.html
Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 299ca2821ad..b969ab1d258 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1698,6 +1698,29 @@ static bool _are_all_hardreset_lines_asserted(struct omap_hwmod *oh) } /** + * _are_any_hardreset_lines_asserted - return true if any part of @oh is + * hard-reset + * @oh: struct omap_hwmod * + * + * If any hardreset lines associated with @oh are asserted, then + * return true. Otherwise, if no hardreset lines associated with @oh + * are asserted, or if @oh has no hardreset lines, then return false. + * This function is used to avoid executing some parts of the IP block + * enable/disable sequence if any hardreset line is set. + */ +static bool _are_any_hardreset_lines_asserted(struct omap_hwmod *oh) +{ + int rst_cnt = 0; + int i; + + for (i = 0; i < oh->rst_lines_cnt && rst_cnt == 0; i++) + if (_read_hardreset(oh, oh->rst_lines[i].name) > 0) + rst_cnt++; + + return (rst_cnt) ? true : false; +} + +/** * _omap4_disable_module - enable CLKCTRL modulemode on OMAP4 * @oh: struct omap_hwmod * * @@ -1715,7 +1738,7 @@ static int _omap4_disable_module(struct omap_hwmod *oh) * Since integration code might still be doing something, only * disable if all lines are under hardreset. */ - if (!_are_all_hardreset_lines_asserted(oh)) + if (_are_any_hardreset_lines_asserted(oh)) return 0; pr_debug("omap_hwmod: %s: %s\n", oh->name, __func__); @@ -1749,12 +1772,12 @@ static int _am33xx_disable_module(struct omap_hwmod *oh) pr_debug("omap_hwmod: %s: %s\n", oh->name, __func__); + if (_are_any_hardreset_lines_asserted(oh)) + return 0; + am33xx_cm_module_disable(oh->clkdm->cm_inst, oh->clkdm->clkdm_offs, oh->prcm.omap4.clkctrl_offs); - if (_are_all_hardreset_lines_asserted(oh)) - return 0; - v = _am33xx_wait_target_disable(oh); if (v) pr_warn("omap_hwmod: %s: _wait_target_disable failed\n", |