linux-kernel - Applied "regulator: as3722: Add bypass support for LDO6" to the regulator tree

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Date:	Mon, 11 Apr 2016 17:15:04 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Jon Hunter <jonathanh@...dia.com>
Cc:	Thierry Reding <treding@...dia.com>,
	Mark Brown <broonie@...nel.org>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Applied "regulator: as3722: Add bypass support for LDO6" to the regulator tree

The patch

   regulator: as3722: Add bypass support for LDO6

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

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

>From 40a865500c4d408b552cf5899bf091ac72e32bf8 Mon Sep 17 00:00:00 2001
From: Jon Hunter <jonathanh@...dia.com>
Date: Thu, 7 Apr 2016 16:22:38 +0200
Subject: [PATCH] regulator: as3722: Add bypass support for LDO6

LD06 on the AS3722 power management IC supports a bypass mode. Bypass
is enabled for the LDO by writing the value 0x3F to the voltage select
field in the control register for the LDO. Note that this is the same
register and field that is used to select the voltage as well for the
LDO.

Add support for bypass on LDO6 by specifying the various bypass
parameters for regulator and adding new function pointer tables for the
LDO. Note that the bypass OFF value is the same as the ON value simply
because there is no actual OFF value and bypass will be disabled when
a new voltage is written to the VSEL field.

Signed-off-by: Jon Hunter <jonathanh@...dia.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/regulator/as3722-regulator.c | 43 ++++++++++++++++++++++++++++++++++++
 include/linux/mfd/as3722.h           |  1 +
 2 files changed, 44 insertions(+)

diff --git a/drivers/regulator/as3722-regulator.c b/drivers/regulator/as3722-regulator.c
index 8b046eec6ae0..35a7c647f6a9 100644
--- a/drivers/regulator/as3722-regulator.c
+++ b/drivers/regulator/as3722-regulator.c
@@ -432,6 +432,31 @@ static struct regulator_ops as3722_ldo3_extcntrl_ops = {
 	.get_current_limit = as3722_ldo3_get_current_limit,
 };
 
+static struct regulator_ops as3722_ldo6_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.map_voltage = regulator_map_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.list_voltage = regulator_list_voltage_linear_range,
+	.get_current_limit = as3722_ldo_get_current_limit,
+	.set_current_limit = as3722_ldo_set_current_limit,
+	.get_bypass = regulator_get_bypass_regmap,
+	.set_bypass = regulator_set_bypass_regmap,
+};
+
+static struct regulator_ops as3722_ldo6_extcntrl_ops = {
+	.map_voltage = regulator_map_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.list_voltage = regulator_list_voltage_linear_range,
+	.get_current_limit = as3722_ldo_get_current_limit,
+	.set_current_limit = as3722_ldo_set_current_limit,
+	.get_bypass = regulator_get_bypass_regmap,
+	.set_bypass = regulator_set_bypass_regmap,
+};
+
 static const struct regulator_linear_range as3722_ldo_ranges[] = {
 	REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
 	REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
@@ -829,6 +854,24 @@ static int as3722_regulator_probe(struct platform_device *pdev)
 				}
 			}
 			break;
+		case AS3722_REGULATOR_ID_LDO6:
+			if (reg_config->ext_control)
+				ops = &as3722_ldo6_extcntrl_ops;
+			else
+				ops = &as3722_ldo6_ops;
+			as3722_regs->desc[id].enable_time = 500;
+			as3722_regs->desc[id].bypass_reg =
+						AS3722_LDO6_VOLTAGE_REG;
+			as3722_regs->desc[id].bypass_mask =
+						AS3722_LDO_VSEL_MASK;
+			as3722_regs->desc[id].bypass_val_on =
+						AS3722_LDO6_VSEL_BYPASS;
+			as3722_regs->desc[id].bypass_val_off =
+						AS3722_LDO6_VSEL_BYPASS;
+			as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges;
+			as3722_regs->desc[id].n_linear_ranges =
+						ARRAY_SIZE(as3722_ldo_ranges);
+			break;
 		case AS3722_REGULATOR_ID_SD0:
 		case AS3722_REGULATOR_ID_SD1:
 		case AS3722_REGULATOR_ID_SD6:
diff --git a/include/linux/mfd/as3722.h b/include/linux/mfd/as3722.h
index 8d43e9f2a842..51e6f9414575 100644
--- a/include/linux/mfd/as3722.h
+++ b/include/linux/mfd/as3722.h
@@ -196,6 +196,7 @@
 #define AS3722_LDO3_VSEL_MIN				0x01
 #define AS3722_LDO3_VSEL_MAX				0x2D
 #define AS3722_LDO3_NUM_VOLT				0x2D
+#define AS3722_LDO6_VSEL_BYPASS 			0x3F
 #define AS3722_LDO_VSEL_MASK				0x7F
 #define AS3722_LDO_VSEL_MIN				0x01
 #define AS3722_LDO_VSEL_MAX				0x7F
-- 
2.8.0.rc3