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Subject[PATCH 05/13] bus: ti-sysc: Enable interconnect target module autoidle bit on enable
Date
For interconnect target modules with autoidle bit wired, we need to manage
it for enable and disable.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/bus/ti-sysc.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -879,7 +879,7 @@ static int sysc_enable_module(struct device *dev)
/* Set MIDLE mode */
idlemodes = ddata->cfg.midlemodes;
if (!idlemodes || regbits->midle_shift < 0)
- return 0;
+ goto set_autoidle;

best_mode = fls(ddata->cfg.midlemodes) - 1;
if (best_mode > SYSC_IDLE_MASK) {
@@ -891,6 +891,14 @@ static int sysc_enable_module(struct device *dev)
reg |= best_mode << regbits->midle_shift;
sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);

+set_autoidle:
+ /* Autoidle bit must enabled separately if available */
+ if (regbits->autoidle_shift >= 0 &&
+ ddata->cfg.sysc_val & BIT(regbits->autoidle_shift)) {
+ reg |= 1 << regbits->autoidle_shift;
+ sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);
+ }
+
return 0;
}

@@ -952,6 +960,9 @@ static int sysc_disable_module(struct device *dev)

reg &= ~(SYSC_IDLE_MASK << regbits->sidle_shift);
reg |= best_mode << regbits->sidle_shift;
+ if (regbits->autoidle_shift >= 0 &&
+ ddata->cfg.sysc_val & BIT(regbits->autoidle_shift))
+ reg |= 1 << regbits->autoidle_shift;
sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);

return 0;
--
2.21.0
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