screen resume on gta02

[Sean McNeil]

Andy Green wrote:
> Somebody in the thread at some point said:
> | Has anyone else used the latest andy git branch and have any experiences
> | with suspend/resume? I'm currently seeing the screen coming back as
> | grey-scale.
>
> Wow.  I think you're probably the only guy using that branch with your
> config, and the suspend / resume stuff is mega sensitive to that.  Not
> to blame your config which is blameless.
>
> Previously when we suspend we forced the LCM into hard reset for the
> duration, I took that out to see what would happen and the LCM came back
> in resume quicker here without other incident.  You might try
> uncommenting it in ./drivers/video/display/jbt6k74.c.
>
> static int jbt_suspend(struct spi_device *spi, pm_message_t state)
> {
>     struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
>     struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
>
>     /* platform needs to register resume dependencies here */
>     if (jbt6k74_pdata->suspending)
>         (jbt6k74_pdata->suspending)(0, spi);
>
>     /* Save mode for resume */
>     jbt->last_state = jbt->state;
>     jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
>
>     jbt->have_resumed = 0;
>
> //    (jbt6k74_pdata->reset)(0, 0);  <==== uncomment
>
>     return 0;
> }
>
> But even then the problem has to be in resume ordering driven by config
> you would think and I dunno how that would work.
>
> -Andy
Thanks Andy. That works for me. The display comes out of suspend in 
color again.