[U-Boot] [PATCH v3 1/2] regulator: bd71837: copy the bd71837 pmic driver from NXP imx u-boot
Matti Vaittinen
matti.vaittinen at fi.rohmeurope.com
Thu Apr 25 09:48:41 UTC 2019
https://source.codeaurora.org/external/imx/uboot-imx
cherry picked, styled and merged commits:
- MLK-18387 pmic: Add pmic driver for BD71837: e9a3bec2e95a
- MLK-18590 pmic: bd71837: Change to use new fdt API: acdc5c297a96
Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Matti Vaittinen <matti.vaittinen at fi.rohmeurope.com>
---
Changelog v2 => v3
- use pmic_clrsetbits() instead of reg_read and reg_write
- remove unnecessary include
drivers/power/pmic/Kconfig | 7 +++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/bd71837.c | 89 ++++++++++++++++++++++++++++++++++++
include/power/bd71837.h | 62 +++++++++++++++++++++++++
4 files changed, 159 insertions(+)
create mode 100644 drivers/power/pmic/bd71837.c
create mode 100644 include/power/bd71837.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 8cf60ebcf3..e154d0a57b 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -48,6 +48,13 @@ config PMIC_AS3722
interface and is designs to cover most of the power managementment
required for a tablets or laptop.
+config DM_PMIC_BD71837
+ bool "Enable Driver Model for PMIC BD71837"
+ depends on DM_PMIC
+ help
+ This config enables implementation of driver-model pmic uclass features
+ for PMIC BD71837. The driver implements read/write operations.
+
config DM_PMIC_FAN53555
bool "Enable support for OnSemi FAN53555"
depends on DM_PMIC && DM_REGULATOR && DM_I2C
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 637352ab2b..e605a88196 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_DM_PMIC_FAN53555) += fan53555.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o
+obj-$(CONFIG_$(SPL_)DM_PMIC_BD71837) += bd71837.o
obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
diff --git a/drivers/power/pmic/bd71837.c b/drivers/power/pmic/bd71837.c
new file mode 100644
index 0000000000..24d9f7fab7
--- /dev/null
+++ b/drivers/power/pmic/bd71837.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <power/bd71837.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ /* buck */
+ { .prefix = "b", .driver = BD71837_REGULATOR_DRIVER},
+ /* ldo */
+ { .prefix = "l", .driver = BD71837_REGULATOR_DRIVER},
+ { },
+};
+
+static int bd71837_reg_count(struct udevice *dev)
+{
+ return BD71837_REG_NUM;
+}
+
+static int bd71837_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ pr_err("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int bd71837_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ pr_err("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int bd71837_bind(struct udevice *dev)
+{
+ int children;
+ ofnode regulators_node;
+
+ regulators_node = dev_read_subnode(dev, "regulators");
+ if (!ofnode_valid(regulators_node)) {
+ debug("%s: %s regulators subnode not found!", __func__,
+ dev->name);
+ return -ENXIO;
+ }
+
+ debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ debug("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static struct dm_pmic_ops bd71837_ops = {
+ .reg_count = bd71837_reg_count,
+ .read = bd71837_read,
+ .write = bd71837_write,
+};
+
+static const struct udevice_id bd71837_ids[] = {
+ { .compatible = "rohm,bd71837", .data = 0x4b, },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_bd71837) = {
+ .name = "bd71837 pmic",
+ .id = UCLASS_PMIC,
+ .of_match = bd71837_ids,
+ .bind = bd71837_bind,
+ .ops = &bd71837_ops,
+};
diff --git a/include/power/bd71837.h b/include/power/bd71837.h
new file mode 100644
index 0000000000..38c69b2b90
--- /dev/null
+++ b/include/power/bd71837.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2018 ROHM Semiconductors */
+
+#ifndef BD71837_H_
+#define BD71837_H_
+
+#define BD71837_REGULATOR_DRIVER "bd71837_regulator"
+
+enum {
+ BD71837_REV = 0x00,
+ BD71837_SWRESET = 0x01,
+ BD71837_I2C_DEV = 0x02,
+ BD71837_PWRCTRL0 = 0x03,
+ BD71837_PWRCTRL1 = 0x04,
+ BD71837_BUCK1_CTRL = 0x05,
+ BD71837_BUCK2_CTRL = 0x06,
+ BD71837_BUCK3_CTRL = 0x07,
+ BD71837_BUCK4_CTRL = 0x08,
+ BD71837_BUCK5_CTRL = 0x09,
+ BD71837_BUCK6_CTRL = 0x0a,
+ BD71837_BUCK7_CTRL = 0x0b,
+ BD71837_BUCK8_CTRL = 0x0c,
+ BD71837_BUCK1_VOLT_RUN = 0x0d,
+ BD71837_BUCK1_VOLT_IDLE = 0x0e,
+ BD71837_BUCK1_VOLT_SUSP = 0x0f,
+ BD71837_BUCK2_VOLT_RUN = 0x10,
+ BD71837_BUCK2_VOLT_IDLE = 0x11,
+ BD71837_BUCK3_VOLT_RUN = 0x12,
+ BD71837_BUCK4_VOLT_RUN = 0x13,
+ BD71837_BUCK5_VOLT = 0x14,
+ BD71837_BUCK6_VOLT = 0x15,
+ BD71837_BUCK7_VOLT = 0x16,
+ BD71837_BUCK8_VOLT = 0x17,
+ BD71837_LDO1_VOLT = 0x18,
+ BD71837_LDO2_VOLT = 0x19,
+ BD71837_LDO3_VOLT = 0x1a,
+ BD71837_LDO4_VOLT = 0x1b,
+ BD71837_LDO5_VOLT = 0x1c,
+ BD71837_LDO6_VOLT = 0x1d,
+ BD71837_LDO7_VOLT = 0x1e,
+ BD71837_TRANS_COND0 = 0x1f,
+ BD71837_TRANS_COND1 = 0x20,
+ BD71837_VRFAULTEN = 0x21,
+ BD71837_MVRFLTMASK0 = 0x22,
+ BD71837_MVRFLTMASK1 = 0x23,
+ BD71837_MVRFLTMASK2 = 0x24,
+ BD71837_RCVCFG = 0x25,
+ BD71837_RCVNUM = 0x26,
+ BD71837_PWRONCONFIG0 = 0x27,
+ BD71837_PWRONCONFIG1 = 0x28,
+ BD71837_RESETSRC = 0x29,
+ BD71837_MIRQ = 0x2a,
+ BD71837_IRQ = 0x2b,
+ BD71837_IN_MON = 0x2c,
+ BD71837_POW_STATE = 0x2d,
+ BD71837_OUT32K = 0x2e,
+ BD71837_REGLOCK = 0x2f,
+ BD71837_MUXSW_EN = 0x30,
+ BD71837_REG_NUM,
+};
+
+#endif
--
2.17.2
--
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 ~~~
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