| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| ChiYuan Huang | 1317 | 94.54% | 2 | 40.00% |
| Axel Lin | 76 | 5.46% | 3 | 60.00% |
| Total | 1393 | 5 |
// SPDX-License-Identifier: GPL-2.0-only #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h> #define RT6160_MODE_AUTO 0 #define RT6160_MODE_FPWM 1 #define RT6160_REG_CNTL 0x01 #define RT6160_REG_STATUS 0x02 #define RT6160_REG_DEVID 0x03 #define RT6160_REG_VSELL 0x04 #define RT6160_REG_VSELH 0x05 #define RT6160_NUM_REGS (RT6160_REG_VSELH + 1) #define RT6160_FPWM_MASK BIT(3) #define RT6160_RAMPRATE_MASK GENMASK(1, 0) #define RT6160_VID_MASK GENMASK(7, 4) #define RT6160_VSEL_MASK GENMASK(6, 0) #define RT6160_HDSTAT_MASK BIT(4) #define RT6160_UVSTAT_MASK BIT(3) #define RT6160_OCSTAT_MASK BIT(2) #define RT6160_TSDSTAT_MASK BIT(1) #define RT6160_PGSTAT_MASK BIT(0) #define RT6160_VENDOR_ID 0xA0 #define RT6160_VOUT_MINUV 2025000 #define RT6160_VOUT_MAXUV 5200000 #define RT6160_VOUT_STPUV 25000 #define RT6160_N_VOUTS ((RT6160_VOUT_MAXUV - RT6160_VOUT_MINUV) / RT6160_VOUT_STPUV + 1) #define RT6160_I2CRDY_TIMEUS 100 struct rt6160_priv { struct regulator_desc desc; struct gpio_desc *enable_gpio; struct regmap *regmap; bool enable_state; }; static const unsigned int rt6160_ramp_tables[] = { 1000, 2500, 5000, 10000 }; static int rt6160_enable(struct regulator_dev *rdev) { struct rt6160_priv *priv = rdev_get_drvdata(rdev); if (!priv->enable_gpio) return 0; gpiod_set_value_cansleep(priv->enable_gpio, 1); priv->enable_state = true; usleep_range(RT6160_I2CRDY_TIMEUS, RT6160_I2CRDY_TIMEUS + 100); regcache_cache_only(priv->regmap, false); return regcache_sync(priv->regmap); } static int rt6160_disable(struct regulator_dev *rdev) { struct rt6160_priv *priv = rdev_get_drvdata(rdev); if (!priv->enable_gpio) return -EINVAL; /* Mark regcache as dirty and cache only before HW disabled */ regcache_cache_only(priv->regmap, true); regcache_mark_dirty(priv->regmap); priv->enable_state = false; gpiod_set_value_cansleep(priv->enable_gpio, 0); return 0; } static int rt6160_is_enabled(struct regulator_dev *rdev) { struct rt6160_priv *priv = rdev_get_drvdata(rdev); return priv->enable_state ? 1 : 0; } static int rt6160_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct regmap *regmap = rdev_get_regmap(rdev); unsigned int mode_val; switch (mode) { case REGULATOR_MODE_FAST: mode_val = RT6160_FPWM_MASK; break; case REGULATOR_MODE_NORMAL: mode_val = 0; break; default: dev_err(&rdev->dev, "mode not supported\n"); return -EINVAL; } return regmap_update_bits(regmap, RT6160_REG_CNTL, RT6160_FPWM_MASK, mode_val); } static unsigned int rt6160_get_mode(struct regulator_dev *rdev) { struct regmap *regmap = rdev_get_regmap(rdev); unsigned int val; int ret; ret = regmap_read(regmap, RT6160_REG_CNTL, &val); if (ret) return ret; if (val & RT6160_FPWM_MASK) return REGULATOR_MODE_FAST; return REGULATOR_MODE_NORMAL; } static int rt6160_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct regmap *regmap = rdev_get_regmap(rdev); unsigned int suspend_vsel_reg; int vsel; vsel = regulator_map_voltage_linear(rdev, uV, uV); if (vsel < 0) return vsel; if (rdev->desc->vsel_reg == RT6160_REG_VSELL) suspend_vsel_reg = RT6160_REG_VSELH; else suspend_vsel_reg = RT6160_REG_VSELL; return regmap_update_bits(regmap, suspend_vsel_reg, RT6160_VSEL_MASK, vsel); } static int rt6160_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) { struct regmap *regmap = rdev_get_regmap(rdev); unsigned int val, events = 0; int ret; ret = regmap_read(regmap, RT6160_REG_STATUS, &val); if (ret) return ret; if (val & (RT6160_HDSTAT_MASK | RT6160_TSDSTAT_MASK)) events |= REGULATOR_ERROR_OVER_TEMP; if (val & RT6160_UVSTAT_MASK) events |= REGULATOR_ERROR_UNDER_VOLTAGE; if (val & RT6160_OCSTAT_MASK) events |= REGULATOR_ERROR_OVER_CURRENT; if (val & RT6160_PGSTAT_MASK) events |= REGULATOR_ERROR_FAIL; *flags = events; return 0; } static const struct regulator_ops rt6160_regulator_ops = { .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .enable = rt6160_enable, .disable = rt6160_disable, .is_enabled = rt6160_is_enabled, .set_mode = rt6160_set_mode, .get_mode = rt6160_get_mode, .set_suspend_voltage = rt6160_set_suspend_voltage, .set_ramp_delay = regulator_set_ramp_delay_regmap, .get_error_flags = rt6160_get_error_flags, }; static unsigned int rt6160_of_map_mode(unsigned int mode) { switch (mode) { case RT6160_MODE_FPWM: return REGULATOR_MODE_FAST; case RT6160_MODE_AUTO: return REGULATOR_MODE_NORMAL; } return REGULATOR_MODE_INVALID; } static bool rt6160_is_accessible_reg(struct device *dev, unsigned int reg) { if (reg >= RT6160_REG_CNTL && reg <= RT6160_REG_VSELH) return true; return false; } static bool rt6160_is_volatile_reg(struct device *dev, unsigned int reg) { if (reg == RT6160_REG_STATUS) return true; return false; } static const struct regmap_config rt6160_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RT6160_REG_VSELH, .num_reg_defaults_raw = RT6160_NUM_REGS, .cache_type = REGCACHE_FLAT, .writeable_reg = rt6160_is_accessible_reg, .readable_reg = rt6160_is_accessible_reg, .volatile_reg = rt6160_is_volatile_reg, }; static int rt6160_probe(struct i2c_client *i2c) { struct rt6160_priv *priv; struct regulator_config regulator_cfg = {}; struct regulator_dev *rdev; bool vsel_active_low; unsigned int devid; int ret; priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; vsel_active_low = device_property_present(&i2c->dev, "richtek,vsel-active-low"); priv->enable_gpio = devm_gpiod_get_optional(&i2c->dev, "enable", GPIOD_OUT_HIGH); if (IS_ERR(priv->enable_gpio)) { dev_err(&i2c->dev, "Failed to get 'enable' gpio\n"); return PTR_ERR(priv->enable_gpio); } priv->enable_state = true; usleep_range(RT6160_I2CRDY_TIMEUS, RT6160_I2CRDY_TIMEUS + 100); priv->regmap = devm_regmap_init_i2c(i2c, &rt6160_regmap_config); if (IS_ERR(priv->regmap)) { ret = PTR_ERR(priv->regmap); dev_err(&i2c->dev, "Failed to init regmap (%d)\n", ret); return ret; } ret = regmap_read(priv->regmap, RT6160_REG_DEVID, &devid); if (ret) return ret; if ((devid & RT6160_VID_MASK) != RT6160_VENDOR_ID) { dev_err(&i2c->dev, "VID not correct [0x%02x]\n", devid); return -ENODEV; } priv->desc.name = "rt6160-buckboost"; priv->desc.type = REGULATOR_VOLTAGE; priv->desc.owner = THIS_MODULE; priv->desc.min_uV = RT6160_VOUT_MINUV; priv->desc.uV_step = RT6160_VOUT_STPUV; if (vsel_active_low) priv->desc.vsel_reg = RT6160_REG_VSELL; else priv->desc.vsel_reg = RT6160_REG_VSELH; priv->desc.vsel_mask = RT6160_VSEL_MASK; priv->desc.n_voltages = RT6160_N_VOUTS; priv->desc.ramp_reg = RT6160_REG_CNTL; priv->desc.ramp_mask = RT6160_RAMPRATE_MASK; priv->desc.ramp_delay_table = rt6160_ramp_tables; priv->desc.n_ramp_values = ARRAY_SIZE(rt6160_ramp_tables); priv->desc.of_map_mode = rt6160_of_map_mode; priv->desc.ops = &rt6160_regulator_ops; regulator_cfg.dev = &i2c->dev; regulator_cfg.of_node = i2c->dev.of_node; regulator_cfg.regmap = priv->regmap; regulator_cfg.driver_data = priv; regulator_cfg.init_data = of_get_regulator_init_data(&i2c->dev, i2c->dev.of_node, &priv->desc); rdev = devm_regulator_register(&i2c->dev, &priv->desc, ®ulator_cfg); if (IS_ERR(rdev)) { dev_err(&i2c->dev, "Failed to register regulator\n"); return PTR_ERR(rdev); } return 0; } static const struct of_device_id __maybe_unused rt6160_of_match_table[] = { { .compatible = "richtek,rt6160", }, {} }; MODULE_DEVICE_TABLE(of, rt6160_of_match_table); static struct i2c_driver rt6160_driver = { .driver = { .name = "rt6160", .of_match_table = rt6160_of_match_table, }, .probe_new = rt6160_probe, }; module_i2c_driver(rt6160_driver); MODULE_DESCRIPTION("Richtek RT6160 voltage regulator driver"); MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); MODULE_LICENSE("GPL v2");
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