[PATCH] regulator: bd718x7: Stop using parent data

[PATCH] regulator: bd718x7: Stop using parent data

[Matti Vaittinen]

The ROHM PMIC regulator drivers only need the regmap pointer from
the parent device. Regmap can be obtained via dev_get_regmap()
so do not require parent to populate driver data for that.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
Sorry for not including this in previous cleanup patch I sent yesterday.

This is last user for MFD struct struct bd718xx - so I thought of sending
this together with the MFD change - and the MFD change was still partially
unfinished. Well, I just noticed the MFD can't be applied before the clk
portion (which I already sent) is applied - so I must anyways wait for the
clk before sending the MFD. Well, I guess I can send out the regulator
bits as well as I now anyways need to manally poll the clk to be applied
before sending the MFD.

 drivers/regulator/bd718x7-regulator.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index 0774467994fb..454ffec62f4f 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -1349,7 +1349,7 @@ static int get_hw_controlled_regulators(struct device *dev,
 
 static int bd718xx_probe(struct platform_device *pdev)
 {
-	struct bd718xx *mfd;
+	struct regmap *regmap;
 	struct regulator_config config = { 0 };
 	int i, j, err, omit_enable;
 	bool use_snvs;
@@ -1358,11 +1358,10 @@ static int bd718xx_probe(struct platform_device *pdev)
 	enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
 	const struct regulator_ops **swops, **hwops;
 
-	mfd = dev_get_drvdata(pdev->dev.parent);
-	if (!mfd) {
+	regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!regmap) {
 		dev_err(&pdev->dev, "No MFD driver data\n");
-		err = -EINVAL;
-		goto err;
+		return -EINVAL;
 	}
 
 	switch (chip) {
@@ -1385,7 +1384,7 @@ static int bd718xx_probe(struct platform_device *pdev)
 	}
 
 	/* Register LOCK release */
-	err = regmap_update_bits(mfd->chip.regmap, BD718XX_REG_REGLOCK,
+	err = regmap_update_bits(regmap, BD718XX_REG_REGLOCK,
 				 (REGLOCK_PWRSEQ | REGLOCK_VREG), 0);
 	if (err) {
 		dev_err(&pdev->dev, "Failed to unlock PMIC (%d)\n", err);
@@ -1404,8 +1403,7 @@ static int bd718xx_probe(struct platform_device *pdev)
 	 * bit allowing HW defaults for power rails to be used
 	 */
 	if (!use_snvs) {
-		err = regmap_update_bits(mfd->chip.regmap,
-					 BD718XX_REG_TRANS_COND1,
+		err = regmap_update_bits(regmap, BD718XX_REG_TRANS_COND1,
 					 BD718XX_ON_REQ_POWEROFF_MASK |
 					 BD718XX_SWRESET_POWEROFF_MASK |
 					 BD718XX_WDOG_POWEROFF_MASK |
@@ -1421,7 +1419,7 @@ static int bd718xx_probe(struct platform_device *pdev)
 	}
 
 	config.dev = pdev->dev.parent;
-	config.regmap = mfd->chip.regmap;
+	config.regmap = regmap;
 	/*
 	 * There are cases when we want to leave the enable-control for
 	 * the HW state machine and use this driver only for voltage control.
@@ -1478,7 +1476,7 @@ static int bd718xx_probe(struct platform_device *pdev)
 		if (!no_enable_control && (!use_snvs ||
 		    !rdev->constraints->always_on ||
 		    !rdev->constraints->boot_on)) {
-			err = regmap_update_bits(mfd->chip.regmap, r->init.reg,
+			err = regmap_update_bits(regmap, r->init.reg,
 						 r->init.mask, r->init.val);
 			if (err) {
 				dev_err(&pdev->dev,
@@ -1488,7 +1486,7 @@ static int bd718xx_probe(struct platform_device *pdev)
 			}
 		}
 		for (j = 0; j < r->additional_init_amnt; j++) {
-			err = regmap_update_bits(mfd->chip.regmap,
+			err = regmap_update_bits(regmap,
 						 r->additional_inits[j].reg,
 						 r->additional_inits[j].mask,
 						 r->additional_inits[j].val);

base-commit: 2c85ebc57b3e1817b6ce1a6b703928e113a90442
-- 
2.25.4


-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =] 

Re: [PATCH] regulator: bd718x7: Stop using parent data

[Mark Brown]

On Thu, 7 Jan 2021 14:23:55 +0200, Matti Vaittinen wrote:
> The ROHM PMIC regulator drivers only need the regmap pointer from
> the parent device. Regmap can be obtained via dev_get_regmap()
> so do not require parent to populate driver data for that.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: bd718x7: Stop using parent data
      commit: 907dfdc945aa3d183cdc6a81b963ee3b42ece306

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark