From 3952cf8ff2f7751ee2f9d6cc6140df4667853250 Mon Sep 17 00:00:00 2001 From: Vitor Soares Date: Tue, 3 Sep 2019 12:35:54 +0200 Subject: i3c: master: dw: reattach device on first available location of address table For today the reattach function only update the device address on the controller. Update the location to the first available too, will optimize the enumeration process avoiding additional checks to keep the available positions on address table consecutive. Signed-off-by: Vitor Soares Reviewed-by: Boris Brezillon Signed-off-by: Boris Brezillon --- drivers/i3c/master/dw-i3c-master.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/i3c/master') diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 7b941e93337f..bd26c3b9634e 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -899,6 +899,22 @@ static int dw_i3c_master_reattach_i3c_dev(struct i3c_dev_desc *dev, struct dw_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev); struct i3c_master_controller *m = i3c_dev_get_master(dev); struct dw_i3c_master *master = to_dw_i3c_master(m); + int pos; + + pos = dw_i3c_master_get_free_pos(master); + + if (data->index > pos && pos > 0) { + writel(0, + master->regs + + DEV_ADDR_TABLE_LOC(master->datstartaddr, data->index)); + + master->addrs[data->index] = 0; + master->free_pos |= BIT(data->index); + + data->index = pos; + master->addrs[pos] = dev->info.dyn_addr; + master->free_pos &= ~BIT(pos); + } writel(DEV_ADDR_TABLE_DYNAMIC_ADDR(dev->info.dyn_addr), master->regs + -- cgit