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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: i9a6HlaSPIlb//sD68Lfu5Cer4hbz3RtPnsKtiNKdBaWYnoPoYGbUi9qIPXcUGnlRGRQW5u495fEoqmtGemIXU/q/nhk4FiCQ1iOY6A29wOPRBVD5grESe2VuPhhWhaIFImpzcqxSkarUEOeIzNaBSqyAuOaox7EhlZYaQr/IxabZDQ0TxacylCAa8cOxr87W7gOYu03kZ1C20F7pT5rVCFNFhrO9EkhPHL2JAQyQtUK4n0/HGBe7zFYdr4DwJqQhdImQYLa/uJtSJ0mrsgsElRc598tSygPlJDk/iF96cAOuMck0cs1Vp/UWSMUBXvh 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: e84ed2c8-b4da-4467-38a9-08d6619b79b7 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Dec 2018 08:09:31.5629 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2244 X-OriginatorOrg: microchip.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds support for entering/resuming suspend states. It does this by setting the LPM pin of the PMIC. When suspending the PMIC will enter the Low-power mode when the LPM pin will be set to high. If the suspend target state is suspend-to-mem, the PMIC will transition to Hibernate mode, otherwise, if it is standby, it will remain in Low-power mode. Signed-off-by: Andrei Stefanescu --- drivers/regulator/mcp16502.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c index 7cbc96f..25d7b43 100644 --- a/drivers/regulator/mcp16502.c +++ b/drivers/regulator/mcp16502.c @@ -497,6 +497,37 @@ static int mcp16502_probe(struct i2c_client *client, return 0; } =20 +#ifdef CONFIG_SUSPEND +static int mcp16502_suspend_noirq(struct device *dev) +{ + struct i2c_client *client =3D to_i2c_client(dev); + struct mcp16502 *mcp =3D i2c_get_clientdata(client); + + mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_LPM); + + return 0; +} + +static int mcp16502_resume_noirq(struct device *dev) +{ + struct i2c_client *client =3D to_i2c_client(dev); + struct mcp16502 *mcp =3D i2c_get_clientdata(client); + + mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_ACTIVE); + + return 0; +} +#else /* !CONFIG_SUSPEND */ +#define mcp16502_suspend NULL +#define mcp16502_resume NULL +#endif /* !CONFIG_SUSPEND */ + +#ifdef CONFIG_PM +static const struct dev_pm_ops mcp16502_pm_ops =3D { + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mcp16502_suspend_noirq, + mcp16502_resume_noirq) +}; +#endif static const struct i2c_device_id mcp16502_i2c_id[] =3D { { "mcp16502", 0 }, { } @@ -508,6 +539,9 @@ static struct i2c_driver mcp16502_drv =3D { .driver =3D { .name =3D "mcp16502-regulator", .of_match_table =3D of_match_ptr(mcp16502_ids), +#ifdef CONFIG_PM + .pm =3D &mcp16502_pm_ops, +#endif }, .id_table =3D mcp16502_i2c_id, }; --=20 2.7.4