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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: y4s3ilm3BWK3ztBdIpg02zd4AlTDIoaKy6r57cnjoZqdss7osva/RVkF0WMh/qwwzpjPf5D8vIRWFCSeq2rMsMDXkP7/SHUqS1pV0I+s7UUlO6gMtybcJBkhetQJl6D8F7GqproaoucMRaJ7+lAM/vVEni+Y5nu7QrYRA85v5WS6h7kHWPDQLSibEWuuxXcaigYey0DqufPtJkzAW8G5Iy0Ofe/+MykwHjbJzkAeiK80/G5b7U2QNydok07p+Wh5MdFrB6L5gPWOJ8B9Ck2rBOLkd1ckrRLTFYgydpleM6Q4t+v9o1cZ4n5ZpZSDeJm99QF/pUlnpzOomVFptiEQOxQxLqQ5/YvF1XDL96L2k1s= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: e08dbd18-33dc-46f9-62db-08d64ebf5d37 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Nov 2018 08:08:33.7884 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2260 X-OriginatorOrg: microchip.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On SAMA5D2 SoC the PIOBU pins do not lose their voltage during Backup/Self-refresh mode. This can be useful, for example, when the voltage must remain positive for a peripheral during Backup/Self-refresh mode (suspend-to ram is the Linux equivalent state). v2: - make driver be a subnode of the syscon node - change Kconfig to depend on MFD_SYSCON and select GPIO_SYSCON - change include header from linux/gpio.h to linux/gpio/driver.h - include linux/bits.h header - change intrusion in comment to tamper - fix kerneldoc of functions - replace GPIOF_DIR_* flags with 0/1 - replace ?: statement with if-else - remove the use of sama5d2_piobu_template_chip - retrieve syscon via syscon_node_to_regmap(pdev->dev.parent->of_node); Note that PIOBU_REG_SIZE is used to determine the register to write to with regmap: reg =3D PIOBU_BASE + pin * PIOBU_REG_SIZE; Also, no irq capability implemented. Andrei Stefanescu (2): dt-bindings: gpio: add SAMA5D2 PIOBU support gpio: add driver for SAMA5D2 PIOBU pins .../bindings/gpio/gpio-sama5d2-piobu.txt | 31 +++ MAINTAINERS | 7 + drivers/gpio/Kconfig | 11 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-sama5d2-piobu.c | 253 +++++++++++++++++= ++++ 5 files changed, 303 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sama5d2-pio= bu.txt create mode 100644 drivers/gpio/gpio-sama5d2-piobu.c --=20 2.7.4