This adds a simple implementation of driver model uclass pmic driver. This implementation includes two funcitons: - max77686_ofdata_to_platdada(...) - init I/O data from fdt - max77686_probe(...) - looks for max77686 regulator driver and bind it
If there is no regulator driver, then pmic can still provide read/write operations, and can be accessed by 'pmic' commands.
Signed-off-by: Przemyslaw Marczak p.marczak@samsung.com --- drivers/power/pmic/Makefile | 1 + drivers/power/pmic/max77686.c | 89 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 90 insertions(+) create mode 100644 drivers/power/pmic/max77686.c
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index e7b07eb..49beffb 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o obj-$(CONFIG_POWER_MAX77686) += pmic_max77686.o +obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o obj-$(CONFIG_POWER_TPS65090_I2C) += pmic_tps65090.o obj-$(CONFIG_POWER_TPS65090_EC) += pmic_tps65090_ec.o diff --git a/drivers/power/pmic/max77686.c b/drivers/power/pmic/max77686.c new file mode 100644 index 0000000..74b10da --- /dev/null +++ b/drivers/power/pmic/max77686.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * Rajeshwari Shinde rajeshwari.s@samsung.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdtdec.h> +#include <i2c.h> +#include <power/pmic.h> +#include <dm/device-internal.h> +#include <dm/uclass-internal.h> +#include <dm/root.h> +#include <dm/lists.h> +#include <power/max77686_pmic.h> +#include <errno.h> +#include <dm.h> + +DECLARE_GLOBAL_DATA_PTR; + +static int max77686_ofdata_to_platdata(struct udevice *dev) +{ + struct pmic_platdata *pl = dev->platdata; + const void *blob = gd->fdt_blob; + int node = dev->of_offset; + int parent; + + pl->interface = PMIC_I2C; + pl->regs_num = PMIC_NUM_OF_REGS; + + parent = fdt_parent_offset(blob, node); + + if (parent < 0) { + error("%s: Cannot find node parent", __func__); + return -EINVAL; + } + + pl->bus = i2c_get_bus_num_fdt(parent); + if (pl->bus < 0) { + debug("%s: Cannot find bus num\n", __func__); + return -EINVAL; + } + + pl->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", MAX77686_I2C_ADDR); + pl->hw.i2c.tx_num = 1; + + return 0; +} + +static int max77686_probe(struct udevice *parent) +{ + struct udevice *reg_dev; + struct driver *reg_drv; + int ret; + + reg_drv = lists_driver_lookup_name("max77686 regulator"); + if (!reg_drv) { + error("%s regulator driver not found!\n", parent->name); + return 0; + } + + if (!parent->platdata) { + error("%s platdata not found!\n", parent->name); + return -EINVAL; + } + + ret = device_bind(parent, reg_drv, parent->name, parent->platdata, + parent->of_offset, ®_dev); + if (ret) + error("%s regulator bind failed", parent->name); + + /* Return error only if no parent platdata set */ + return 0; +} + +static const struct udevice_id max77686_ids[] = { + { .compatible = "maxim,max77686_pmic"}, + { } +}; + +U_BOOT_DRIVER(pmic_max77686) = { + .name = "max77686 pmic", + .id = UCLASS_PMIC, + .of_match = max77686_ids, + .probe = max77686_probe, + .ofdata_to_platdata = max77686_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct pmic_platdata), +};