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From: Marco Felsch <m.felsch@pengutronix.de>
To: support.opensource@diasemi.com, lee.jones@linaro.org,
	robh+dt@kernel.org, linus.walleij@linaro.org,
	bgolaszewski@baylibre.com, joel@jms.id.au, andrew@aj.id.au,
	lgirdwood@gmail.com, broonie@kernel.org
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-aspeed@lists.ozlabs.org,
	linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de
Subject: [PATCH v3 6/6] regulator: da9062: add gpio based regulator dis-/enable support
Date: Fri, 29 Nov 2019 18:25:37 +0100
Message-ID: <20191129172537.31410-7-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20191129172537.31410-1-m.felsch@pengutronix.de>

Each regulator can be enabeld/disabled by the internal pmic state
machine or by a gpio input signal. Typically the OTP configures the
regulators to be enabled/disabled on a specific sequence number which is
most the time fine. Sometimes we need to reconfigure that due to a PCB
bug. This patch adds the support to disable/enable the regulator based
on a gpio input signal.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
v3:
- add comment on reg_field
- append ena_gpi to da9062_regulator_info instead of insert it in the
  middle
---
 drivers/regulator/da9062-regulator.c | 88 +++++++++++++++++++++++++++-
 1 file changed, 86 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c
index 6117e631236b..79b08029282a 100644
--- a/drivers/regulator/da9062-regulator.c
+++ b/drivers/regulator/da9062-regulator.c
@@ -62,8 +62,13 @@ struct da9062_regulator_info {
 	 * vsel_gpi:
 	 * The input port which is used by a regulator to select between
 	 * voltage-a/b settings.
+	 *
+	 * ena_gpi:
+	 * The input port which is used by a regulator to en-/disable its
+	 * output.
 	 */
 	struct reg_field vsel_gpi;
+	struct reg_field ena_gpi;
 };
 
 /* Single regulator settings */
@@ -78,6 +83,7 @@ struct da9062_regulator {
 	struct regmap_field			*sleep;
 	struct regmap_field			*suspend_sleep;
 	struct regmap_field			*vsel_gpi;
+	struct regmap_field			*ena_gpi;
 };
 
 /* Encapsulates all information for the regulators driver */
@@ -423,7 +429,10 @@ static int da9062_config_gpi(struct device_node *np,
 		goto free;
 	}
 
-	ret = regmap_field_write(regl->vsel_gpi, nr);
+	if (!strncmp(gpi_id, "ena", 3))
+		ret = regmap_field_write(regl->ena_gpi, nr);
+	else
+		ret = regmap_field_write(regl->vsel_gpi, nr);
 
 free:
 	kfree(prop);
@@ -436,7 +445,13 @@ static int da9062_parse_dt(struct device_node *np,
 			   const struct regulator_desc *desc,
 			   struct regulator_config *cfg)
 {
-	return da9062_config_gpi(np, desc, cfg, "vsel");
+	int error;
+
+	error = da9062_config_gpi(np, desc, cfg, "vsel");
+	if (error)
+		return error;
+
+	return da9062_config_gpi(np, desc, cfg, "ena");
 }
 
 /* DA9061 Regulator information */
@@ -481,6 +496,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK1_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK1_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK1_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK1_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK1_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9061_ID_BUCK2,
@@ -522,6 +541,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK3_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK3_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK3_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK3_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK3_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9061_ID_BUCK3,
@@ -563,6 +586,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK4_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK4_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK4_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK4_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK4_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9061_ID_LDO1,
@@ -597,6 +624,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO1_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO1_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO1_CONT,
+			__builtin_ffs((int)DA9062AA_LDO1_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO1_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -635,6 +666,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO2_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO2_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO2_CONT,
+			__builtin_ffs((int)DA9062AA_LDO2_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO2_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -673,6 +708,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO3_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO3_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO3_CONT,
+			__builtin_ffs((int)DA9062AA_LDO3_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO3_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -711,6 +750,10 @@ static const struct da9062_regulator_info local_da9061_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO4_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO4_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO4_CONT,
+			__builtin_ffs((int)DA9062AA_LDO4_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO4_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -760,6 +803,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK1_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK1_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK1_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK1_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK1_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9062_ID_BUCK2,
@@ -801,6 +848,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK2_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK2_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK2_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK2_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK2_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9062_ID_BUCK3,
@@ -842,6 +893,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK3_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK3_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK3_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK3_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK3_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9062_ID_BUCK4,
@@ -883,6 +938,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VBUCK4_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VBUCK4_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_BUCK4_CONT,
+			__builtin_ffs((int)DA9062AA_BUCK4_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_BUCK4_GPI_MASK) - 1),
 	},
 	{
 		.desc.id = DA9062_ID_LDO1,
@@ -917,6 +976,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO1_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO1_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO1_CONT,
+			__builtin_ffs((int)DA9062AA_LDO1_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO1_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -955,6 +1018,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO2_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO2_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO2_CONT,
+			__builtin_ffs((int)DA9062AA_LDO2_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO2_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -993,6 +1060,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO3_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO3_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO3_CONT,
+			__builtin_ffs((int)DA9062AA_LDO3_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO3_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -1031,6 +1102,10 @@ static const struct da9062_regulator_info local_da9062_regulator_info[] = {
 			__builtin_ffs((int)DA9062AA_VLDO4_GPI_MASK) - 1,
 			sizeof(unsigned int) * 8 -
 			__builtin_clz(DA9062AA_VLDO4_GPI_MASK) - 1),
+		.ena_gpi = REG_FIELD(DA9062AA_LDO4_CONT,
+			__builtin_ffs((int)DA9062AA_LDO4_GPI_MASK) - 1,
+			sizeof(unsigned int) * 8 -
+			__builtin_clz(DA9062AA_LDO4_GPI_MASK) - 1),
 		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
 			__builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
 			sizeof(unsigned int) * 8 -
@@ -1160,6 +1235,15 @@ static int da9062_regulator_probe(struct platform_device *pdev)
 				return PTR_ERR(regl->vsel_gpi);
 		}
 
+		if (regl->info->ena_gpi.reg) {
+			regl->ena_gpi = devm_regmap_field_alloc(
+					&pdev->dev,
+					chip->regmap,
+					regl->info->ena_gpi);
+			if (IS_ERR(regl->ena_gpi))
+				return PTR_ERR(regl->ena_gpi);
+		}
+
 		/* Register regulator */
 		memset(&config, 0, sizeof(config));
 		config.dev = chip->dev;
-- 
2.20.1


  parent reply index

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-29 17:25 [PATCH v3 0/6] DA9062 PMIC features Marco Felsch
2019-11-29 17:25 ` [PATCH v3 1/6] gpio: treewide rename gpio_chip_hwgpio to gpiod_to_offset Marco Felsch
2019-12-02  2:59   ` Andrew Jeffery
2019-11-29 17:25 ` [PATCH v3 2/6] gpio: make gpiod_to_offset() available for other users Marco Felsch
2019-12-02  3:00   ` Andrew Jeffery
2019-11-29 17:25 ` [PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation Marco Felsch
2019-12-04 13:46   ` Mark Brown
2019-12-10  9:41     ` Marco Felsch
2019-12-11 16:14       ` Adam Thomson
2019-12-11 17:09         ` Marco Felsch
2019-12-12 15:08           ` Linus Walleij
2019-12-12 15:55             ` Marco Felsch
2019-12-12 16:10           ` Mark Brown
2019-12-12 16:21             ` Marco Felsch
2019-12-12 16:51               ` Mark Brown
2019-12-16  8:55                 ` Marco Felsch
2019-12-16 11:44                   ` Mark Brown
2019-12-17  7:35                     ` Marco Felsch
2019-12-17 12:58                       ` Mark Brown
2020-01-07  8:36                         ` Marco Felsch
2020-01-07 13:09                           ` Mark Brown
2020-01-07 13:38                             ` Marco Felsch
2020-01-14 15:43                               ` Mark Brown
2019-12-16 16:32                   ` Adam Thomson
2019-12-17  9:00                     ` Marco Felsch
2019-12-17  9:12                       ` Marco Felsch
2019-12-17  9:53                       ` Adam Thomson
2019-12-17 12:31                         ` Marco Felsch
2019-12-17 13:13                           ` Adam Thomson
2019-12-16 16:32                   ` Adam Thomson
2019-12-16 12:28               ` Linus Walleij
2019-11-29 17:25 ` [PATCH v3 4/6] regulator: da9062: add voltage selection gpio support Marco Felsch
2019-11-29 17:25 ` [PATCH v3 5/6] dt-bindings: mfd: da9062: add regulator gpio enable/disable documentation Marco Felsch
2019-12-13 22:23   ` Rob Herring
2019-12-16 16:31   ` Lee Jones
2019-11-29 17:25 ` Marco Felsch [this message]
2019-12-02 11:44 ` [PATCH v3 0/6] DA9062 PMIC features Linus Walleij
2019-12-02 12:04   ` Lee Jones

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