linux-kernel - Re: [PATCH v7 5/9] dmtimer: Add timer ops to the platform data structure

Open Source and information security mailing list archives

Message-ID: <23a83979-e0d9-85b6-5a34-1c293362420e@ti.com>
Date:   Wed, 14 Feb 2018 10:51:01 +0530
From:   Keerthy <j-keerthy@...com>
To:     Suman Anna <s-anna@...com>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "tony@...mide.com" <tony@...mide.com>,
        "aaro.koskinen@....fi" <aaro.koskinen@....fi>
CC:     "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "ladis@...ux-mips.org" <ladis@...ux-mips.org>,
        "narmstrong@...libre.com" <narmstrong@...libre.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Kristo, Tero" <t-kristo@...com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "sebastian.reichel@...labora.co.uk" 
        <sebastian.reichel@...labora.co.uk>,
        "Strashko, Grygorii" <grygorii.strashko@...com>,
        "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
        "Claudiu.Beznea@...rochip.com" <Claudiu.Beznea@...rochip.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v7 5/9] dmtimer: Add timer ops to the platform data
 structure

On Tuesday 13 February 2018 08:16 AM, Suman Anna wrote:
> On 01/09/2018 12:23 AM, J, KEERTHY wrote:
>> Add timer ops to the platform data structure
>>
>> Signed-off-by: Keerthy <j-keerthy@...com>
>> Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
>> Tested-by: Ladislav Michl <ladis@...ux-mips.org>
>> ---
>>   include/linux/platform_data/dmtimer-omap.h | 38 ++++++++++++++++++++++++++++++
>>   1 file changed, 38 insertions(+)
>>
>> diff --git a/include/linux/platform_data/dmtimer-omap.h 
>> b/include/linux/platform_data/dmtimer-omap.h
>> index a19b78d..a3e1794 100644
>> --- a/include/linux/platform_data/dmtimer-omap.h
>> +++ b/include/linux/platform_data/dmtimer-omap.h
>> @@ -20,12 +20,50 @@
>>   #ifndef __PLATFORM_DATA_DMTIMER_OMAP_H__
>>   #define __PLATFORM_DATA_DMTIMER_OMAP_H__
>>
>> +struct omap_dm_timer_ops {
>> +       struct omap_dm_timer *(*request_by_node)(struct device_node *np);
>> +       struct omap_dm_timer *(*request_specific)(int timer_id);
>> +       struct omap_dm_timer *(*request)(void);
>> +
>> +       int     (*free)(struct omap_dm_timer *timer);
>> +
>> +       void    (*enable)(struct omap_dm_timer *timer);
>> +       void    (*disable)(struct omap_dm_timer *timer);
>> +
>> +       int     (*get_irq)(struct omap_dm_timer *timer);
>> +       int     (*set_int_enable)(struct omap_dm_timer *timer,
>> +                                 unsigned int value);
>> +       int     (*set_int_disable)(struct omap_dm_timer *timer, u32 mask);
>> +
>> +       struct clk *(*get_fclk)(struct omap_dm_timer *timer);
>> +
>> +       int     (*start)(struct omap_dm_timer *timer);
>> +       int     (*stop)(struct omap_dm_timer *timer);
>> +       int     (*set_source)(struct omap_dm_timer *timer, int source);
>> +
>> +       int     (*set_load)(struct omap_dm_timer *timer, int autoreload,
>> +                           unsigned int value);
>> +       int     (*set_match)(struct omap_dm_timer *timer, int enable,
>> +                            unsigned int match);
>> +       int     (*set_pwm)(struct omap_dm_timer *timer, int def_on,
>> +                          int toggle, int trigger);
>> +       int     (*set_prescaler)(struct omap_dm_timer *timer, int prescaler);
>> +
>> +       unsigned int (*read_counter)(struct omap_dm_timer *timer);
>> +       int     (*write_counter)(struct omap_dm_timer *timer,
>> +                                unsigned int value);
>> +       unsigned int (*read_status)(struct omap_dm_timer *timer);
>> +       int     (*write_status)(struct omap_dm_timer *timer,
>> +                               unsigned int value);
>> +};
>> +
>>   struct dmtimer_platform_data {
>>           /* set_timer_src - Only used for OMAP1 devices */
>>           int (*set_timer_src)(struct platform_device *pdev, int source);
> Have you looked into collapsing this into the set_source() option above
> for OMAP1? Looks like the only reason the pdev is needed is for
> retrieving the pdev id, which is also stored in the omap_dm_timer structure?

I would prefer not to touch the mach-omap1 part as part of this
migration series. I will revisit this once the migration is done.

> 
>>           u32 timer_capability;
>>           u32 timer_errata;
>>           int (*get_context_loss_count)(struct device *);
>> +       struct omap_dm_timer_ops *timer_ops;
> 
> Any reason why this is not a const? We don't expect this to change right.

Yes this can be.

> 
> regards
> Suman
> 
>>   };
>>
>>   #endif /* __PLATFORM_DATA_DMTIMER_OMAP_H__ */
>> -- 
>> 1.9.1
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>>
> 

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives