21 Apr
2018
21 Apr
'18
5:53 p.m.
On Sat, Apr 21, 2018 at 06:47:24AM -0700, Pierre-Louis Bossart wrote:
+static int sdw_enable_disable_slave_ports(struct sdw_bus *bus,
struct sdw_slave_runtime *s_rt,struct sdw_port_runtime *p_rt, bool en)+{
- struct sdw_transport_params *t_params = &p_rt->transport_params;
- u32 addr;
- int ret;
- if (bus->params.next_bank)
addr = SDW_DPN_CHANNELEN_B1(p_rt->num);- else
addr = SDW_DPN_CHANNELEN_B0(p_rt->num);- /*
* Since bus doesn't support sharing a port across two streams,* it is safe to reset this register*/- if (en)
ret = sdw_update(s_rt->slave, addr, 0xFF, p_rt->ch_mask);- else
ret = sdw_update(s_rt->slave, addr, 0xFF, 0x0);- if (ret < 0)
dev_err(&s_rt->slave->dev,"Slave chn_en reg write failed:%d port:%d",ret, t_params->port_num);- return ret;
+}
Add a clarification that this routine only sets the enable/disable bits in the relevant bank, the actual enable/disable is done with a bank switch.
Isn't that something spec tells the reader? this is a SDW concept that we program bank and then switch to have the effect, so why would i add comment for that?
--
~Vinod