i3c: master: dw: reattach device on first available location of address table (3952cf8f) · Commits · 戴 / test

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>

drivers/i3c/master/dw-i3c-master.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -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 +

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