On 4 November 2014 at 04:35, Suman Anna <s-anna@xxxxxx> wrote: > The OMAP mailbox driver and its existing clients (remoteproc > for OMAP4+) are adapted to use the generic mailbox framework. > > The main changes for the adaptation are: > - The tasklet used for Tx is replaced with the state machine from > the generic mailbox framework. The workqueue used for processing > the received messages stays intact for minimizing the effects on > the OMAP mailbox clients. > - The existing exported client API, omap_mbox_get, omap_mbox_put and > omap_mbox_send_msg are deleted, as the framework provides equivalent > functionality. A OMAP-specific omap_mbox_request_channel is added > though to support non-DT way of requesting mailboxes. > - The OMAP mailbox driver is integrated with the mailbox framework > through the proper implementations of mbox_chan_ops, except for > .last_tx_done and .peek_data. The OMAP mailbox driver does not need > these ops, as it is completely interrupt driven. > - The OMAP mailbox driver uses a custom of_xlate controller ops that > allows phandles for the pargs specifier instead of indexing to avoid > any channel registration order dependencies. > - The new framework does not support multiple clients operating on a > single channel, so the reference counting logic is simplified. > - The remoteproc driver (current client) is adapted to use the new API. > The notifier callbacks used within this client is replaced with the > regular callbacks from the newer framework. > - The exported OMAP mailbox API are limited to omap_mbox_save_ctx, > omap_mbox_restore_ctx, omap_mbox_enable_irq & omap_mbox_disable_irq, > with the signature modified to take in the new mbox_chan handle instead > of the OMAP specific omap_mbox handle. The first 2 will be removed when > the OMAP mailbox driver is adapted to runtime_pm. The other exported > API omap_mbox_request_channel will be removed once existing legacy > users are converted to DT. > > Cc: Jassi Brar <jassisinghbrar@xxxxxxxxx> > Cc: Ohad Ben-Cohen <ohad@xxxxxxxxxx> > Signed-off-by: Suman Anna <s-anna@xxxxxx> > --- > v3->v4: No code changes, switched the example to use the DSP node instead of > WkupM3 in the bindings document & minor commit description changes. Other than > that, this is a repost of the driver adaptation patch [1] from the OMAP Mailbox > framework adaptation series [2]. This patch is intended for the 3.19 merge window, > all the dependent patches in [2] are merged as of 3.18-rc2. The DTS patch in [2] > will be posted separately. > > [1] http://marc.info/?l=linux-omap&m=141038453917790&w=2 > [2] http://marc.info/?l=linux-omap&m=141038447817775&w=2 > > .../devicetree/bindings/mailbox/omap-mailbox.txt | 23 ++ > drivers/mailbox/omap-mailbox.c | 346 ++++++++++++--------- > drivers/remoteproc/omap_remoteproc.c | 51 +-- > include/linux/omap-mailbox.h | 16 +- > 4 files changed, 256 insertions(+), 180 deletions(-) > Applied to mailbox-devel, Thanks -Jassi -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
