…p_params"

This reverts commit 72e43ef.

This reverts commit e56ee9f.

The existing logic is problematic in that we deprepare all the ports,
but still take into account the stream for bit allocation by just
walking through the bus->m_rt list.

This patch sets the state earlier, so that such DEPREPARED streams can
be skipped in the bandwidth allocation (to be implemented in a
follow-up patch).

Signed-off-by: Pierre-Louis Bossart <[email protected]>

We should not blindly walk through all the m_rt list, since it will
have the side effect of accounting for deprepared streams.

This behavior is the result of the split implementation where the
dailink hw_free() handles the stream state change and the bit
allocation, and the dai hw_free() modifies the m_rt list. The bit
allocation ends-up using m_rt entries in zoombie state, not longer
relevant but still used.

Signed-off-by: Pierre-Louis Bossart <[email protected]>

Currently, we only set peripheral frequency when the peripheral is
initialized. However, curr_dr_freq may change to get required bandwidth.
For example, curr_dr_freq may increase from 4.8MHz to 9.6MHz when the
4th stream is opened. Add a helper to get the scale index so that we can
get the scale index and program it.

Signed-off-by: Bard Liao <[email protected]>

We need to program bus clock scale to adjust the bus clock if current
bus clock doesn't fit the bandwidth.

Signed-off-by: Bard Liao <[email protected]>

We need to recalculate frame shape when sdw bus clock is changed.
And need to make sure all Peripherals connected to the Manager support
dynamic clock change.

Signed-off-by: Bard Liao <[email protected]>

…w_select_row_col

The bits in Column 0 of Rows 0 to 47 are for control word and can not be
used for audio. In practice, entire Column 0 is skipped.

Signed-off-by: Bard Liao <[email protected]>

Currently, we check curr_dr_freq roughly by "if (curr_dr_freq <=
bus->params.bandwidth)" in sdw_compute_bus_params() and check it
accurately in sdw_select_row_col(). It works if we only support one
freq. But, we need to check it accurately in sdw_select_row_col() to
give it a chance to use a higher freq or use multi-lane.

Signed-off-by: Bard Liao <[email protected]>

If a peripheral supports multi-lane, we can use data lane x to extend
the bandwidth. The patch suggests to select data lane x where x > 0
when bandwidth is not enough on data lane 0.

Signed-off-by: Bard Liao <[email protected]>

All active streams with the same parameters are grouped together and the
params are store in the sdw_group struct. We compute the required
bandwidth for each group. However, each lane has individual bandwidth.
Therefore, we should separate different lanes in different params groups.
Add lane variable to separate params groups.

Signed-off-by: Bard Liao <[email protected]>

…l clk freq

Frame shap and curr_dr_freq could be updated by sdw_compute_bus_params().
And Peripherals will set curr_dr_freq as their frequency. Managers
should do the same. Then update frame shape according to the actual
bus frequency.

Signed-off-by: Bard Liao <[email protected]>

Now, we can support more than 1 soundwire bus clock frequency.

This reverts commit c326356.

Signed-off-by: Bard Liao <[email protected]>