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i3c: master: dw: reattach device on first available location of address table

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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 <vitor.soares@synopsys.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
This commit is contained in:
Vitor Soares 2019-09-03 12:35:54 +02:00 committed by Boris Brezillon
parent 3c67166dc5
commit 3952cf8ff2
1 changed files with 16 additions and 0 deletions
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16
drivers/i3c/master/dw-i3c-master.c
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@ -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 +