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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: uH60lIDuSzCbt7fi4gYFqc7rZjcAwJkVkuOTGel7eYSAqf257LeZandk6Jf6fBiYYPHOIVrwicTJpI8KxZixMY/Wwvoth0R7KZBIMgPLWVavQGi2iUQKTtjFQtmijpYcwZs3uzfTbr3D1ihG5TOuWd7C8psFoC/TDlTnC0THwITcKXOM78gUbI+K19FDdbD1g2seabxe2mwUBNPNQkj84qhUpO7Pj9K3m4hLezsz60KBf9/mEwl3dFD/zeesBHVN19x2bCYtLOt6gSM9RUAtXygPXdA+Fk4AmRmi9VR/SCqMp5VkWAq5IA9jX9/g+mPX 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: 66c0af9d-b104-4bc6-bad0-08d66060a8e5 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Dec 2018 18:35:59.2821 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2211 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. This patch depends on 0b60c4deca1d regulator: mcp16502: add regulator driver for MCP16502 Signed-off-by: Andrei Stefanescu --- drivers/regulator/mcp16502.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c index 7cbc96f..bde3172 100644 --- a/drivers/regulator/mcp16502.c +++ b/drivers/regulator/mcp16502.c @@ -497,6 +497,36 @@ static int mcp16502_probe(struct i2c_client *client, return 0; } =20 +#ifdef CONFIG_SUSPEND +static int mcp16502_suspend(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(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_SYSTEM_SLEEP_PM_OPS(mcp16502_suspend, mcp16502_resume) +}; +#endif static const struct i2c_device_id mcp16502_i2c_id[] =3D { { "mcp16502", 0 }, { } @@ -508,6 +538,9 @@ 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