diff options
| -rw-r--r-- | drivers/power/pmic/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/power/pmic/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/pmic/mc34708.c | 105 |
3 files changed, 113 insertions, 0 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 40ab9f7fa5..d504c28b77 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -69,6 +69,13 @@ config DM_PMIC_MAX8998 This config enables implementation of driver-model pmic uclass features for PMIC MAX8998. The driver implements read/write operations. +config DM_PMIC_MC34708 + bool "Enable Driver Model for PMIC MC34708" + depends on DM_PMIC + help + This config enables implementation of driver-model pmic uclass features + for PMIC MC34708. The driver implements read/write operations. + config PMIC_MAX8997 bool "Enable Driver Model for PMIC MAX8997" depends on DM_PMIC diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 85ab176c0a..29ca442933 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_DM_PMIC) += pmic-uclass.o obj-$(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_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/mc34708.c b/drivers/power/pmic/mc34708.c new file mode 100644 index 0000000000..2b2fc72a47 --- /dev/null +++ b/drivers/power/pmic/mc34708.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 + * Lukasz Majewski, DENX Software Engineering, lukma@denx.de + * + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <fsl_pmic.h> +#include <i2c.h> +#include <power/pmic.h> + +DECLARE_GLOBAL_DATA_PTR; + +static int mc34708_reg_count(struct udevice *dev) +{ + return PMIC_NUM_OF_REGS; +} + +static int mc34708_write(struct udevice *dev, uint reg, const u8 *buff, + int len) +{ + u8 buf[3] = { 0 }; + int ret; + + if (len != MC34708_TRANSFER_SIZE) + return -EINVAL; + + /* + * The MC34708 sends data with big endian format, hence we need to + * perform manual byte swap. + */ + buf[0] = buff[2]; + buf[1] = buff[1]; + buf[2] = buff[0]; + + ret = dm_i2c_write(dev, reg, buf, len); + if (ret) + printf("write error to device: %p register: %#x!", dev, reg); + + return ret; +} + +static int mc34708_read(struct udevice *dev, uint reg, u8 *buff, int len) +{ + u8 buf[3] = { 0 }; + int ret; + + if (len != MC34708_TRANSFER_SIZE) + return -EINVAL; + + ret = dm_i2c_read(dev, reg, buf, len); + if (ret) + printf("read error from device: %p register: %#x!", dev, reg); + + buff[0] = buf[2]; + buff[1] = buf[1]; + buff[2] = buf[0]; + + return ret; +} + +static int mc34708_probe(struct udevice *dev) +{ + struct uc_pmic_priv *priv = dev_get_uclass_priv(dev); + + priv->trans_len = MC34708_TRANSFER_SIZE; + + /* + * Handle PMIC Errata 37: APS mode not fully functional, + * use explicit PWM or PFM instead + */ + pmic_clrsetbits(dev, MC34708_REG_SW12_OPMODE, + MC34708_SW1AMODE_MASK | MC34708_SW2MODE_MASK, + SW_MODE_PWMPWM | (SW_MODE_PWMPWM << 14u)); + + pmic_clrsetbits(dev, MC34708_REG_SW345_OPMODE, + MC34708_SW3MODE_MASK | MC34708_SW4AMODE_MASK | + MC34708_SW4BMODE_MASK | MC34708_SW5MODE_MASK, + SW_MODE_PWMPWM | (SW_MODE_PWMPWM << 6u) | + (SW_MODE_PWMPWM << 12u) | (SW_MODE_PWMPWM << 18u)); + + return 0; +} + +static struct dm_pmic_ops mc34708_ops = { + .reg_count = mc34708_reg_count, + .read = mc34708_read, + .write = mc34708_write, +}; + +static const struct udevice_id mc34708_ids[] = { + { .compatible = "fsl,mc34708" }, + { } +}; + +U_BOOT_DRIVER(pmic_mc34708) = { + .name = "mc34708_pmic", + .id = UCLASS_PMIC, + .of_match = mc34708_ids, + .probe = mc34708_probe, + .ops = &mc34708_ops, +}; |