linux-kernel - Re: [PATCH V4 13/18] soc/tegra: pmc: allow support for more tegra wake

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Date:   Mon, 24 Jun 2019 09:21:41 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     Marc Zyngier <marc.zyngier@....com>
CC:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <tglx@...utronix.de>, <jason@...edaemon.net>,
        <linus.walleij@...aro.org>, <stefan@...er.ch>,
        <mark.rutland@....com>, <pdeschrijver@...dia.com>,
        <pgaikwad@...dia.com>, <sboyd@...nel.org>,
        <linux-clk@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <jckuo@...dia.com>, <josephl@...dia.com>, <talho@...dia.com>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <mperttunen@...dia.com>, <spatra@...dia.com>, <robh+dt@...nel.org>,
        <digetx@...il.com>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH V4 13/18] soc/tegra: pmc: allow support for more tegra
 wake


On 6/24/19 1:15 AM, Marc Zyngier wrote:
> On Mon, 24 Jun 2019 04:02:54 +0100,
> Sowjanya Komatineni <skomatineni@...dia.com> wrote:
>> This patch allows to create separate irq_set_wake and irq_set_type
>> implementations for different tegra designs PMC that has different
>> wake models which require difference wake registers and different
>> programming sequence.
>>
>> AOWAKE model support is available for Tegra186 and Tegra194 only
>> and it resides within PMC and supports tiered wake architecture.
>>
>> Tegra210 and prior tegra designs uses PMC directly to receive wake
>> events and coordinate the wake sequence.
>>
>> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
>> ---
>>   drivers/soc/tegra/pmc.c | 14 ++++++++++----
>>   1 file changed, 10 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
>> index edd4fe06810f..e87f29a35fcf 100644
>> --- a/drivers/soc/tegra/pmc.c
>> +++ b/drivers/soc/tegra/pmc.c
>> @@ -226,6 +226,8 @@ struct tegra_pmc_soc {
>>   	void (*setup_irq_polarity)(struct tegra_pmc *pmc,
>>   				   struct device_node *np,
>>   				   bool invert);
>> +	int (*irq_set_wake)(struct irq_data *data, unsigned int on);
>> +	int (*irq_set_type)(struct irq_data *data, unsigned int type);
>>   
>>   	const char * const *reset_sources;
>>   	unsigned int num_reset_sources;
>> @@ -1919,7 +1921,7 @@ static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
>>   	.alloc = tegra_pmc_irq_alloc,
>>   };
>>   
>> -static int tegra_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
>> +static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
>>   {
>>   	struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
>>   	unsigned int offset, bit;
>> @@ -1951,7 +1953,7 @@ static int tegra_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
>>   	return 0;
>>   }
>>   
>> -static int tegra_pmc_irq_set_type(struct irq_data *data, unsigned int type)
>> +static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type)
>>   {
>>   	struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
>>   	u32 value;
>> @@ -2005,8 +2007,10 @@ static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
>>   	pmc->irq.irq_unmask = irq_chip_unmask_parent;
>>   	pmc->irq.irq_eoi = irq_chip_eoi_parent;
>>   	pmc->irq.irq_set_affinity = irq_chip_set_affinity_parent;
>> -	pmc->irq.irq_set_type = tegra_pmc_irq_set_type;
>> -	pmc->irq.irq_set_wake = tegra_pmc_irq_set_wake;
>> +	if (pmc->soc->irq_set_type)
>> +		pmc->irq.irq_set_type = pmc->soc->irq_set_type;
>> +	if (pmc->soc->irq_set_wake)
>> +		pmc->irq.irq_set_wake = pmc->soc->irq_set_wake;
> I already commented on how superfluous these 'if ()' where. If you
> disagree, please let me know why.
>
> Thanks,
>
> 	M.

Sorry Marc, missed it. Will fix in next version...


Thanks

Sowjanya