From: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Lee Jones <lee.jones@linaro.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-rtc@vger.kernel.org
Subject: [PATCH v7 08/12] regulator: bd718x7: Split driver to common and bd718x7 specific parts
Date: Thu, 19 Dec 2019 11:52:39 +0200 [thread overview]
Message-ID: <151b68f40a85ba8418efdba136c5925ffa7ee3e8.1576745635.git.matti.vaittinen@fi.rohmeurope.com> (raw)
In-Reply-To: <cover.1576745635.git.matti.vaittinen@fi.rohmeurope.com>
Few ROHM PMICs allow setting the voltage states for different system states
like RUN, IDLE, SUSPEND and LPSR. States are then changed via SoC specific
mechanisms. bd718x7 driver implemented device-tree parsing functions for
these state specific voltages. The parsing functions can be re-used by
other ROHM chip drivers like bd71828. Split the generic functions from
bd718x7-regulator.c to rohm-regulator.c and export them for other modules
to use.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Mark Brown <broonie@kernel.org>
---
No changes since v6
drivers/regulator/Kconfig | 4 +
drivers/regulator/Makefile | 1 +
drivers/regulator/bd718x7-regulator.c | 183 ++++++++------------------
drivers/regulator/rohm-regulator.c | 95 +++++++++++++
include/linux/mfd/rohm-generic.h | 44 +++++++
5 files changed, 199 insertions(+), 128 deletions(-)
create mode 100644 drivers/regulator/rohm-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 74eb5af7295f..a4897ae52f14 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -197,6 +197,7 @@ config REGULATOR_BD70528
config REGULATOR_BD718XX
tristate "ROHM BD71837 Power Regulator"
depends on MFD_ROHM_BD718XX
+ select REGULATOR_ROHM
help
This driver supports voltage regulators on ROHM BD71837 PMIC.
This will enable support for the software controllable buck
@@ -790,6 +791,9 @@ config REGULATOR_RN5T618
Say y here to support the regulators found on Ricoh RN5T567,
RN5T618 or RC5T619 PMIC.
+config REGULATOR_ROHM
+ tristate
+
config REGULATOR_RT5033
tristate "Richtek RT5033 Regulators"
depends on MFD_RT5033
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 2210ba56f9bd..6bcab72c1fc7 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -99,6 +99,7 @@ obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
obj-$(CONFIG_REGULATOR_RK808) += rk808-regulator.o
obj-$(CONFIG_REGULATOR_RN5T618) += rn5t618-regulator.o
+obj-$(CONFIG_REGULATOR_ROHM) += rohm-regulator.o
obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o
obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index 6beaf867d9cb..55decb58c777 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -318,6 +318,7 @@ struct reg_init {
};
struct bd718xx_regulator_data {
struct regulator_desc desc;
+ const struct rohm_dvs_config dvs;
const struct reg_init init;
const struct reg_init *additional_inits;
int additional_init_amnt;
@@ -349,133 +350,15 @@ static const struct reg_init bd71837_ldo6_inits[] = {
},
};
-#define NUM_DVS_BUCKS 4
-
-struct of_dvs_setting {
- const char *prop;
- unsigned int reg;
-};
-
-static int set_dvs_levels(const struct of_dvs_setting *dvs,
- struct device_node *np,
- const struct regulator_desc *desc,
- struct regmap *regmap)
-{
- int ret, i;
- unsigned int uv;
-
- ret = of_property_read_u32(np, dvs->prop, &uv);
- if (ret) {
- if (ret != -EINVAL)
- return ret;
- return 0;
- }
-
- for (i = 0; i < desc->n_voltages; i++) {
- ret = regulator_desc_list_voltage_linear_range(desc, i);
- if (ret < 0)
- continue;
- if (ret == uv) {
- i <<= ffs(desc->vsel_mask) - 1;
- ret = regmap_update_bits(regmap, dvs->reg,
- DVS_BUCK_RUN_MASK, i);
- break;
- }
- }
- return ret;
-}
-
-static int buck4_set_hw_dvs_levels(struct device_node *np,
+static int buck_set_hw_dvs_levels(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD71837_REG_BUCK4_VOLT_RUN,
- },
- };
+ struct bd718xx_regulator_data *data;
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-static int buck3_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD71837_REG_BUCK3_VOLT_RUN,
- },
- };
+ data = container_of(desc, struct bd718xx_regulator_data, desc);
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-
-static int buck2_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD718XX_REG_BUCK2_VOLT_RUN,
- },
- {
- .prop = "rohm,dvs-idle-voltage",
- .reg = BD718XX_REG_BUCK2_VOLT_IDLE,
- },
- };
-
-
-
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-
-static int buck1_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_RUN,
- },
- {
- .prop = "rohm,dvs-idle-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_IDLE,
- },
- {
- .prop = "rohm,dvs-suspend-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_SUSP,
- },
- };
-
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
+ return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
}
static const struct bd718xx_regulator_data bd71847_regulators[] = {
@@ -496,7 +379,17 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = {
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck1_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+ ROHM_DVS_LEVEL_SUSPEND,
+ .run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
+ .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
+ .suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
@@ -520,7 +413,14 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = {
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck2_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
+ .run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
@@ -792,7 +692,17 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck1_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+ ROHM_DVS_LEVEL_SUSPEND,
+ .run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
+ .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
+ .suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
@@ -816,7 +726,14 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck2_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
+ .run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
@@ -840,7 +757,12 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD71837_REG_BUCK3_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck3_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN,
+ .run_reg = BD71837_REG_BUCK3_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK3_CTRL,
@@ -864,7 +786,12 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD71837_REG_BUCK4_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck4_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN,
+ .run_reg = BD71837_REG_BUCK4_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK4_CTRL,
diff --git a/drivers/regulator/rohm-regulator.c b/drivers/regulator/rohm-regulator.c
new file mode 100644
index 000000000000..ca368ada53c6
--- /dev/null
+++ b/drivers/regulator/rohm-regulator.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 ROHM Semiconductors
+
+#include <linux/errno.h>
+#include <linux/mfd/rohm-generic.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+static int set_dvs_level(const struct regulator_desc *desc,
+ struct device_node *np, struct regmap *regmap,
+ char *prop, unsigned int reg, unsigned int mask,
+ unsigned int omask, unsigned int oreg)
+{
+ int ret, i;
+ uint32_t uv;
+
+ ret = of_property_read_u32(np, prop, &uv);
+ if (ret) {
+ if (ret != -EINVAL)
+ return ret;
+ return 0;
+ }
+
+ if (uv == 0) {
+ if (omask)
+ return regmap_update_bits(regmap, oreg, omask, 0);
+ }
+ for (i = 0; i < desc->n_voltages; i++) {
+ ret = regulator_desc_list_voltage_linear_range(desc, i);
+ if (ret < 0)
+ continue;
+ if (ret == uv) {
+ i <<= ffs(desc->vsel_mask) - 1;
+ ret = regmap_update_bits(regmap, reg, mask, i);
+ if (omask && !ret)
+ ret = regmap_update_bits(regmap, oreg, omask,
+ omask);
+ break;
+ }
+ }
+ return ret;
+}
+
+int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap)
+{
+ int i, ret = 0;
+ char *prop;
+ unsigned int reg, mask, omask, oreg = desc->enable_reg;
+
+ for (i = 0; i < ROHM_DVS_LEVEL_MAX && !ret; i++) {
+ if (dvs->level_map & (1 << i)) {
+ switch (i + 1) {
+ case ROHM_DVS_LEVEL_RUN:
+ prop = "rohm,dvs-run-voltage";
+ reg = dvs->run_reg;
+ mask = dvs->run_mask;
+ omask = dvs->run_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_IDLE:
+ prop = "rohm,dvs-idle-voltage";
+ reg = dvs->idle_reg;
+ mask = dvs->idle_mask;
+ omask = dvs->idle_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_SUSPEND:
+ prop = "rohm,dvs-suspend-voltage";
+ reg = dvs->suspend_reg;
+ mask = dvs->suspend_mask;
+ omask = dvs->suspend_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_LPSR:
+ prop = "rohm,dvs-lpsr-voltage";
+ reg = dvs->lpsr_reg;
+ mask = dvs->lpsr_mask;
+ omask = dvs->lpsr_on_mask;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = set_dvs_level(desc, np, regmap, prop, reg, mask,
+ omask, oreg);
+ }
+ }
+ return ret;
+}
+EXPORT_SYMBOL(rohm_regulator_set_dvs_levels);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
+MODULE_DESCRIPTION("Generic helpers for ROHM PMIC regulator drivers");
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index ff3dd7578fd3..8037421cc6a1 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -4,6 +4,9 @@
#ifndef __LINUX_MFD_ROHM_H__
#define __LINUX_MFD_ROHM_H__
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
enum rohm_chip_type {
ROHM_CHIP_TYPE_BD71837 = 0,
ROHM_CHIP_TYPE_BD71847,
@@ -17,4 +20,45 @@ struct rohm_regmap_dev {
struct regmap *regmap;
};
+enum {
+ ROHM_DVS_LEVEL_UNKNOWN,
+ ROHM_DVS_LEVEL_RUN,
+ ROHM_DVS_LEVEL_IDLE,
+ ROHM_DVS_LEVEL_SUSPEND,
+ ROHM_DVS_LEVEL_LPSR,
+#define ROHM_DVS_LEVEL_MAX ROHM_DVS_LEVEL_LPSR
+};
+
+struct rohm_dvs_config {
+ uint64_t level_map;
+ unsigned int run_reg;
+ unsigned int run_mask;
+ unsigned int run_on_mask;
+ unsigned int idle_reg;
+ unsigned int idle_mask;
+ unsigned int idle_on_mask;
+ unsigned int suspend_reg;
+ unsigned int suspend_mask;
+ unsigned int suspend_on_mask;
+ unsigned int lpsr_reg;
+ unsigned int lpsr_mask;
+ unsigned int lpsr_on_mask;
+};
+
+#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
+int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap);
+
+#else
+static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap)
+{
+ return 0;
+}
+#endif //IS_ENABLED(CONFIG_REGULATOR_ROHM)
+
#endif
--
2.21.0
--
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 =]
next prev parent reply other threads:[~2019-12-19 9:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-19 9:44 [PATCH v7 00/12] Support ROHM BD71828 PMIC Matti Vaittinen
2019-12-19 9:44 ` [PATCH v7 01/12] dt-bindings: leds: ROHM BD71282 PMIC LED driver Matti Vaittinen
2019-12-21 19:26 ` Pavel Machek
2019-12-19 9:46 ` [PATCH v7 02/12] dt-bindings: mfd: Document ROHM BD71828 bindings Matti Vaittinen
2019-12-19 9:58 ` Vaittinen, Matti
2019-12-19 14:36 ` Lee Jones
2019-12-20 6:33 ` Vaittinen, Matti
2019-12-20 10:55 ` Lee Jones
2019-12-19 9:46 ` [PATCH v7 03/12] mfd: rohm PMICs - use platform_device_id to match MFD sub-devices Matti Vaittinen
2019-12-19 9:49 ` [PATCH v7 04/12] mfd: bd718x7: Add compatible for BD71850 Matti Vaittinen
2019-12-19 9:50 ` [PATCH v7 05/12] mfd: bd71828: Support ROHM BD71828 PMIC - core Matti Vaittinen
2019-12-19 9:51 ` [PATCH v7 06/12] mfd: input: bd71828: Add power-key support Matti Vaittinen
2019-12-19 9:52 ` [PATCH v7 07/12] clk: bd718x7: Support ROHM BD71828 clk block Matti Vaittinen
2019-12-24 6:54 ` Stephen Boyd
2019-12-19 9:52 ` Matti Vaittinen [this message]
2019-12-19 9:53 ` [PATCH v7 09/12] rtc: bd70528: add BD71828 support Matti Vaittinen
2019-12-19 9:53 ` [PATCH v7 10/12] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs Matti Vaittinen
2019-12-19 9:54 ` [PATCH v7 11/12] leds: Add common LED binding parsing support to LED class/core Matti Vaittinen
2019-12-21 19:37 ` Pavel Machek
2019-12-23 10:35 ` Vaittinen, Matti
2019-12-27 11:29 ` Vaittinen, Matti
2019-12-27 11:51 ` Vaittinen, Matti
2019-12-30 7:36 ` Vaittinen, Matti
2019-12-19 9:54 ` [PATCH v7 12/12] led: bd71828: Support LED outputs on ROHM BD71828 PMIC Matti Vaittinen
2019-12-21 19:48 ` Pavel Machek
2019-12-27 9:43 ` Vaittinen, Matti
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