On Thu, Jan 23, 2014 at 8:57 AM, Sylvain BERTRAND <sylware at legeek.net> wrote: > Hi, > > In si_populate_smc_acpi_state function, the acpi (emergency) state is a > patched > version of the initial state. Then 'ACIndex = 0' for the acpi state (i.e. > setting it to SISLANDS_MCREGISTERTABLE_INITIAL_SLOT) seems misleading, since > ACIndex is already set to 0 (SISLANDS_MCREGISTERTABLE_INITIAL_SLOT) in > si_populate_smc_initial_state. That should be removed to avoid confusion. > > > Additionnally, that would mean the acpi state is not using its slot in > the mc_reg_table, *BUT* it is used by the ulv state! Indeed ACIndex is set to > 1 > (SISLANDS_MCREGISTERTABLE_ACPI_SLOT) in si_populate_ulv_state function. > > We can see in si_populate_mc_reg_table that initial state, acpi state, ulv > state and driver state have their respective mc_reg_table slot filled. > > Then, the previous code seems to make the ulv mc_reg_table slot unused and > useless to fill. > > Moreover, is not following the SISLANDS_MCREGISTERTABLE_*_SLOT mc_reg_table > allocation. > > Bug?
It looks like we only use slots 0 and 1 and the driver state slots. I confirmed catalyst does the same thing. I suspect there was an intention to use three states at some point, but it didn't end up being useful. Alex > > regards, > > -- > Sylvain > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel
