From 4e8ba4c72c403485453d777d8c6585a238b514bb Mon Sep 17 00:00:00 2001 From: Anand Moon Date: Sun, 12 Jul 2015 18:41:20 +0530 Subject: [PATCH 14/75] ODROID-XU4: regulator: s2mps11: call shutdown function to poweroff Added .shutdown function to s2mps11 to help poweroff the board successfully. The device driver clears the register to turn off the PMIC. s2mps11-pmic: S2MPS11_REG_CTRL1 reg value 16:00000000000000000000000000010000 Console log. * Unmounting temporary filesystems... [ OK ] * Deactivating swap... [ OK ] * Unmounting local filesystems... [ OK ] * Will now halt [ 209.020280] reboot: Power down [ 209.122039] Power down failed, please power off system manually. Change-Id: If6ea0dec154b00ceeaaddbac393c67dc35c26279 Signed-off-by: Anand Moon Signed-off-by: memeka Signed-off-by: Marian Mihailescu --- drivers/regulator/s2mps11.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c index ebc67e3ddd4f..8d340f760232 100644 --- a/drivers/regulator/s2mps11.c +++ b/drivers/regulator/s2mps11.c @@ -1225,6 +1225,31 @@ static int s2mps11_pmic_probe(struct platform_device *pdev) return ret; } +static void s2mps11_pmic_shutdown(struct platform_device *pdev) +{ + struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); + unsigned int reg_val, ret; + + ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_CTRL1, ®_val); + if (ret < 0) { + dev_crit(&pdev->dev, "could not read S2MPS11_REG_CTRL1 value\n"); + } else { + /* + * s2mps11-pmic: S2MPS11_REG_CTRL1 reg value + * is 00000000000000000000000000010000 + * clear the S2MPS11_REG_CTRL1 0x10 value to shutdown. + */ + if (reg_val & BIT(4)) { + ret = regmap_update_bits(iodev->regmap_pmic, + S2MPS11_REG_CTRL1, + BIT(4), BIT(0)); + if (ret) + dev_crit(&pdev->dev, + "could not write S2MPS11_REG_CTRL1 value\n"); + } + } +} + static const struct platform_device_id s2mps11_pmic_id[] = { { "s2mps11-regulator", S2MPS11X}, { "s2mps13-regulator", S2MPS13X}, @@ -1240,6 +1265,7 @@ static struct platform_driver s2mps11_pmic_driver = { .name = "s2mps11-pmic", }, .probe = s2mps11_pmic_probe, + .shutdown = s2mps11_pmic_shutdown, .id_table = s2mps11_pmic_id, }; -- 2.25.1