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ARM: OMAP2+: hwmod: disable ick autoidling when a hwmod requires that

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Deny autoidle for hwmods with the OCPIF_SWSUP_IDLE flag,
that makes hwmods working properly which cannot handle
autoidle properly in lower power states.
Affected is e. g. the omap_hdq.
Since an ick might have mulitple users, autoidle is disabled
when an individual user requires that rather than in
_setup_iclk_autoidle. dss_ick is an example for that.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Andreas Kemnade 2019-01-16 23:04:29 +01:00 committed by Tero Kristo
parent fddf4e29a6
commit 12af39cad7
1 changed files with 12 additions and 4 deletions
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16
arch/arm/mach-omap2/omap_hwmod.c
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@ -1002,8 +1002,10 @@ static int _enable_clocks(struct omap_hwmod *oh)
clk_enable(oh->_clk);
list_for_each_entry(os, &oh->slave_ports, node) {
if (os->_clk && (os->flags & OCPIF_SWSUP_IDLE))
if (os->_clk && (os->flags & OCPIF_SWSUP_IDLE)) {
omap2_clk_deny_idle(os->_clk);
clk_enable(os->_clk);
}
}
/* The opt clocks are controlled by the device driver. */
@ -1055,8 +1057,10 @@ static int _disable_clocks(struct omap_hwmod *oh)
clk_disable(oh->_clk);
list_for_each_entry(os, &oh->slave_ports, node) {
if (os->_clk && (os->flags & OCPIF_SWSUP_IDLE))
if (os->_clk && (os->flags & OCPIF_SWSUP_IDLE)) {
clk_disable(os->_clk);
omap2_clk_allow_idle(os->_clk);
}
}
if (oh->flags & HWMOD_OPT_CLKS_NEEDED)
@ -2436,9 +2440,13 @@ static void _setup_iclk_autoidle(struct omap_hwmod *oh)
continue;
if (os->flags & OCPIF_SWSUP_IDLE) {
/* XXX omap_iclk_deny_idle(c); */
/*
* we might have multiple users of one iclk with
* different requirements, disable autoidle when
* the module is enabled, e.g. dss iclk
*/
} else {
/* XXX omap_iclk_allow_idle(c); */
/* we are enabling autoidle afterwards anyways */
clk_enable(os->_clk);
}
}