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synopsys.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190829_070911_243845_51E495D7 X-CRM114-Status: GOOD ( 18.21 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "mark.rutland@arm.com" , "devicetree@vger.kernel.org" , "Joao.Pinto@synopsys.com" , "bbrezillon@kernel.org" , "linux-kernel@vger.kernel.org" , "robh+dt@kernel.org" , "linux-i3c@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Hi Boris, From: Boris Brezillon Date: Thu, Aug 29, 2019 at 12:15:19 > On Thu, 29 Aug 2019 12:19:35 +0200 > Vitor Soares wrote: > > > 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. > > Given the number of available slots I honestly don't think it makes a > difference, but I also don't mind this change, so The slots are HW dependent. The point is, I need to guarantee the available slot are consecutives. If you have any suggestion I appreciate. > > Reviewed-by: Boris Brezillon > > > > > Signed-off-by: Vitor Soares > > --- > > drivers/i3c/master/dw-i3c-master.c | 16 ++++++++++++++++ > > 1 file changed, 16 insertions(+) > > > > diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c > > index 1d83c97..62261ac 100644 > > --- a/drivers/i3c/master/dw-i3c-master.c > > +++ b/drivers/i3c/master/dw-i3c-master.c > > @@ -898,6 +898,22 @@ 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 + Best regards, Vitor Soares _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c