diff options
| author | Andreas Kemnade <andreas@kemnade.info> | 2020-09-11 18:12:09 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2020-09-24 14:26:20 +0300 |
| commit | fb2c599f056640d289b2147fbe6d9eaee689f1b2 (patch) | |
| tree | b842bba43be0e18776892003bc26ae086133682c /arch/arm/mach-omap2/pm34xx.c | |
| parent | 501e69b028a47e20cb0d842e267fc5aa5e5230aa (diff) | |
ARM: omap3: enable off mode automatically
Enabling off mode was only reachable deeply hidden
in the debugfs. As powersaving is an important feature,
move the option out of its shady place.
The debugfs file can still be used to override the default.
Use the presence of a device compatible to ti,twl4030-idle or
ti,twl4030-idle-osc-off as an indicator that the board is wired correctly
for off mode.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
[tony@atomide.com: updated to fix a checkpatch warning]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 6df395fff971..155b6a86fac5 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -25,6 +25,7 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/of.h> #include <linux/omap-gpmc.h> #include <trace/events/power.h> @@ -414,7 +415,12 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) if (!pwrst) return -ENOMEM; pwrst->pwrdm = pwrdm; - pwrst->next_state = PWRDM_POWER_RET; + + if (enable_off_mode) + pwrst->next_state = PWRDM_POWER_OFF; + else + pwrst->next_state = PWRDM_POWER_RET; + list_add(&pwrst->node, &pwrst_list); if (pwrdm_has_hdwr_sar(pwrdm)) @@ -448,6 +454,22 @@ static void __init pm_errata_configure(void) } } +static void __init omap3_pm_check_pmic(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle"); + if (!np) + np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle-osc-off"); + + if (np) { + of_node_put(np); + enable_off_mode = 1; + } else { + enable_off_mode = 0; + } +} + int __init omap3_pm_init(void) { struct power_state *pwrst, *tmp; @@ -481,6 +503,8 @@ int __init omap3_pm_init(void) goto err2; } + omap3_pm_check_pmic(); + ret = pwrdm_for_each(pwrdms_setup, NULL); if (ret) { pr_err("Failed to setup powerdomains\n"); |