From 2b50719dd92f4ba8feccb4542e675060241a4d27 Mon Sep 17 00:00:00 2001 From: Billy Tsai Date: Wed, 13 Nov 2024 11:58:26 +0800 Subject: [PATCH] i3c: mipi-i3c-hci: Support SETDASA CCC When the I3C subsystem wants to assign a dynamic address using the SETDASA CCC, it needs to attach the I3C device with device info that includes only the static address. In the HCI, if the driver want to send this SETDASA CCC, a DAT entry is required to temporarily fill the device's static address into the dynamic address field. Afterward, the reattach API will be executed to update the DAT with the correct dynamic addrees value. Signed-off-by: Billy Tsai Reviewed-by: Jarkko Nikula Link: https://lore.kernel.org/r/20241113035826.923918-1-billy_tsai@aspeedtech.com Signed-off-by: Alexandre Belloni --- drivers/i3c/master/mipi-i3c-hci/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c index b190401c89c99d..e6e482a259b4cd 100644 --- a/drivers/i3c/master/mipi-i3c-hci/core.c +++ b/drivers/i3c/master/mipi-i3c-hci/core.c @@ -436,7 +436,8 @@ static int i3c_hci_attach_i3c_dev(struct i3c_dev_desc *dev) kfree(dev_data); return ret; } - mipi_i3c_hci_dat_v1.set_dynamic_addr(hci, ret, dev->info.dyn_addr); + mipi_i3c_hci_dat_v1.set_dynamic_addr(hci, ret, + dev->info.dyn_addr ?: dev->info.static_addr); dev_data->dat_idx = ret; } i3c_dev_set_master_data(dev, dev_data);