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Message-Id: <E1ZFqHs-0001ry-FY@finisterre>
Date: Thu, 16 Jul 2015 22:01:48 +0100
From: Mark Brown <broonie@...nel.org>
To: Krzysztof Kozlowski <k.kozlowski.k@...il.com>,
Mark Brown <broonie@...nel.org>,
Mark Brown <broonie@...nel.org>
Cc: linux-kernel@...r.kernel.org
Subject: Applied "regulator: max77693: Support different register configurations" to the regulator tree
The patch
regulator: max77693: Support different register configurations
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 5b5e771fb711f95da859bf6be9fba4bc9919b5d5 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <k.kozlowski.k@...il.com>
Date: Wed, 15 Jul 2015 21:59:49 +0900
Subject: [PATCH] regulator: max77693: Support different register
configurations
Add support for different configurations of charger's registers so the
same driver could be used on other devices (e.g. MAX77843).
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@...il.com>
Acked-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
drivers/regulator/max77693.c | 39 +++++++++++++++++++++++++++------------
1 file changed, 27 insertions(+), 12 deletions(-)
diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c
index 38722c8..236851a 100644
--- a/drivers/regulator/max77693.c
+++ b/drivers/regulator/max77693.c
@@ -33,7 +33,13 @@
#include <linux/regulator/of_regulator.h>
#include <linux/regmap.h>
-#define CHGIN_ILIM_STEP_20mA 20000
+/* Charger regulator differences between MAX77693 and MAX77843 */
+struct chg_reg_data {
+ unsigned int linear_reg;
+ unsigned int linear_mask;
+ unsigned int uA_step;
+ unsigned int min_sel;
+};
/*
* CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
@@ -42,25 +48,26 @@
*/
static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
{
+ const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
unsigned int chg_min_uA = rdev->constraints->min_uA;
unsigned int chg_max_uA = rdev->constraints->max_uA;
unsigned int reg, sel;
unsigned int val;
int ret;
- ret = regmap_read(rdev->regmap, MAX77693_CHG_REG_CHG_CNFG_09, ®);
+ ret = regmap_read(rdev->regmap, reg_data->linear_reg, ®);
if (ret < 0)
return ret;
- sel = reg & CHG_CNFG_09_CHGIN_ILIM_MASK;
+ sel = reg & reg_data->linear_mask;
/* the first four codes for charger current are all 60mA */
- if (sel <= 3)
+ if (sel <= reg_data->min_sel)
sel = 0;
else
- sel -= 3;
+ sel -= reg_data->min_sel;
- val = chg_min_uA + CHGIN_ILIM_STEP_20mA * sel;
+ val = chg_min_uA + reg_data->uA_step * sel;
if (val > chg_max_uA)
return -EINVAL;
@@ -70,20 +77,20 @@ static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
static int max77693_chg_set_current_limit(struct regulator_dev *rdev,
int min_uA, int max_uA)
{
+ const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
unsigned int chg_min_uA = rdev->constraints->min_uA;
int sel = 0;
- while (chg_min_uA + CHGIN_ILIM_STEP_20mA * sel < min_uA)
+ while (chg_min_uA + reg_data->uA_step * sel < min_uA)
sel++;
- if (chg_min_uA + CHGIN_ILIM_STEP_20mA * sel > max_uA)
+ if (chg_min_uA + reg_data->uA_step * sel > max_uA)
return -EINVAL;
/* the first four codes for charger current are all 60mA */
- sel += 3;
+ sel += reg_data->min_sel;
- return regmap_write(rdev->regmap,
- MAX77693_CHG_REG_CHG_CNFG_09, sel);
+ return regmap_write(rdev->regmap, reg_data->linear_reg, sel);
}
/* end of CHARGER regulator ops */
@@ -145,6 +152,13 @@ static const struct regulator_desc regulators[] = {
},
};
+static const struct chg_reg_data max77693_chg_reg_data = {
+ .linear_reg = MAX77693_CHG_REG_CHG_CNFG_09,
+ .linear_mask = CHG_CNFG_09_CHGIN_ILIM_MASK,
+ .uA_step = 20000,
+ .min_sel = 3,
+};
+
static int max77693_pmic_probe(struct platform_device *pdev)
{
struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
@@ -153,6 +167,7 @@ static int max77693_pmic_probe(struct platform_device *pdev)
config.dev = iodev->dev;
config.regmap = iodev->regmap;
+ config.driver_data = (void *)&max77693_chg_reg_data;
for (i = 0; i < ARRAY_SIZE(regulators); i++) {
struct regulator_dev *rdev;
@@ -170,7 +185,7 @@ static int max77693_pmic_probe(struct platform_device *pdev)
}
static const struct platform_device_id max77693_pmic_id[] = {
- {"max77693-pmic", 0},
+ { "max77693-pmic", TYPE_MAX77693 },
{},
};
--
2.1.4
--
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