Hi Stan,
>Hi Sricharan,
>
>On 10/24/2016 01:18 PM, Sricharan R wrote:
>> From: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
>>
>> Some GDSCs might support a HW control mode, where in the power
>> domain (gdsc) is brought in and out of low power state (while
>> unsued) without any SW assistance, saving power.
>> Such GDSCs can be configured in a HW control mode when powered on
>> until they are explicitly requested to be powered off by software.
>>
>> Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
>> Signed-off-by: Sricharan R <sricharan@xxxxxxxxxxxxxx>
>> ---
>> drivers/clk/qcom/gdsc.c | 15 +++++++++++++++
>> drivers/clk/qcom/gdsc.h | 1 +
>> 2 files changed, 16 insertions(+)
>>
>> diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
>> index f12d7b2..a5e1c8c 100644
>> --- a/drivers/clk/qcom/gdsc.c
>> +++ b/drivers/clk/qcom/gdsc.c
>> @@ -55,6 +55,13 @@ static int gdsc_is_enabled(struct gdsc *sc, unsigned int reg)
>> return !!(val & PWR_ON_MASK);
>> }
>>
>> +static int gdsc_hwctrl(struct gdsc *sc, bool en)
>> +{
>> + u32 val = en ? HW_CONTROL_MASK : 0;
>> +
>> + return regmap_update_bits(sc->regmap, sc->gdscr, HW_CONTROL_MASK, val);
>> +}
>> +
>> static int gdsc_toggle_logic(struct gdsc *sc, bool en)
>> {
>> int ret;
>> @@ -164,6 +171,10 @@ static int gdsc_enable(struct generic_pm_domain *domain)
>> */
>> udelay(1);
>>
>> + /* Turn on HW trigger mode if supported */
>> + if (sc->flags & HW_CTRL)
>> + gdsc_hwctrl(sc, true);
>
Sure, will add the check.
Regards,
Sricharan
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