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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: Ab3OuIQGHCtyiEgX5FNn2hZtz7uvSlmEvhNkkvUglwFDe91k9CN34cfQn3IvljbUHK1DR5BpJgMMIiA7aBKYMYnux2z/jwox6FTmX4h3PKf1YqAa8EKN6gNaWYGma0g3PBf6vzYWkbZVrSjp4nulZADAqOljipkmbQziDYUq8XEqRVOHP0J1jVHkJ0rSjGutHupY9dqA30ivpLj1Pc/LJkvLHxzd9xH1zDqBB/svmuE0L9oPnRZ6t6nzEUntPkenB8W/F904nYm14Iq7DHG5PxlztYxqy1lVTdykuxIKIB5Yxpq6dP6MZs6xmkO/6mt4 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: b41d0e67-9f6a-4953-6198-08d660f97722 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Dec 2018 12:49:48.4992 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR11MB0519 X-OriginatorOrg: microchip.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Claudiu Beznea Unlock expert registers for act8945a. This is based on orginal work of Boris Brezillon at [1]. [1] https://www.spinics.net/lists/kernel/msg2942960.html Signed-off-by: Claudiu Beznea --- drivers/regulator/act8945a-regulator.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act= 8945a-regulator.c index 43fda8b4455a..8d71d9893d0d 100644 --- a/drivers/regulator/act8945a-regulator.c +++ b/drivers/regulator/act8945a-regulator.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include =20 @@ -23,6 +24,7 @@ */ #define ACT8945A_SYS_MODE 0x00 #define ACT8945A_SYS_CTRL 0x01 +#define ACT8945A_SYS_UNLK_REGS 0x0b #define ACT8945A_DCDC1_VSET1 0x20 #define ACT8945A_DCDC1_VSET2 0x21 #define ACT8945A_DCDC1_CTRL 0x22 @@ -123,9 +125,17 @@ static int act8945a_pmic_probe(struct platform_device = *pdev) struct regulator_config config =3D { }; const struct regulator_desc *regulators; struct regulator_dev *rdev; + struct regmap *regmap; int i, num_regulators; bool voltage_select; =20 + regmap =3D dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { + dev_err(&pdev->dev, + "could not retrieve regmap from parent device\n"); + return -EINVAL; + } + voltage_select =3D of_property_read_bool(pdev->dev.parent->of_node, "active-semi,vsel-high"); =20 @@ -149,7 +159,8 @@ static int act8945a_pmic_probe(struct platform_device *= pdev) } } =20 - return 0; + /* Unlock expert registers. */ + return regmap_write(regmap, ACT8945A_SYS_UNLK_REGS, 0xef); } =20 static struct platform_driver act8945a_pmic_driver =3D { --=20 2.7.4