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Tue, 10 Dec 2019 11:15:41 +0100 From: =?UTF-8?q?Przemys=C5=82aw=20Gaj?= To: Subject: [PATCH v4 6/6] i3c: master: dw: reattach device on first available location of address table Date: Tue, 10 Dec 2019 11:15:02 +0100 Message-ID: <20191210101502.8401-7-pgaj@cadence.com> X-Mailer: git-send-email 2.14.0 In-Reply-To: <20191210101502.8401-1-pgaj@cadence.com> References: <20191210101502.8401-1-pgaj@cadence.com> MIME-Version: 1.0 X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:199.43.4.28; IPV:CAL; SCL:-1; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(4636009)(136003)(396003)(376002)(346002)(39860400002)(36092001)(199004)(189003)(336012)(6916009)(70586007)(81156014)(8676002)(26005)(1076003)(8936002)(426003)(81166006)(42186006)(5660300002)(316002)(76130400001)(54906003)(2616005)(36756003)(6666004)(356004)(186003)(70206006)(478600001)(86362001)(26826003)(2906002)(107886003)(4326008); DIR:OUT; SFP:1101; SCL:1; SRVR:SN6PR07MB4992; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org From: Vitor Soares 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: Przemyslaw Gaj --- Change in v3: - None Change in v2: - Add Boris rb-tag --- 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 b0ff0e12d84c..c6caba39a34b 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 + -- 2.14.0 _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c