From: huang zhibao Date: Thu, 18 Jun 2015 09:55:55 +0000 (+0800) Subject: regulator: add eta3555 support X-Git-Tag: firefly_0821_release~4010 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=113ed737155b464ed8c802319e41db0b1d559c57;p=firefly-linux-kernel-4.4.55.git regulator: add eta3555 support --- diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index bae14d243f81..e293e20b21f1 100755 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -292,6 +292,12 @@ config REGULATOR_SYR82X help Support the voltage and current regulators of the SYR82X series of DCDC devices. +config REGULATOR_ETA3555 + tristate "ETA3555 DCDC SUPPORT REGULATOR" + depends on I2C + help + Support the voltage and current regulators of the SYR82X series of DCDC devices. + config REGULATOR_PCAP tristate "Motorola PCAP2 regulator driver" depends on EZX_PCAP diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index c6f9f5238896..e30f8ce746dc 100755 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o obj-$(CONFIG_REGULATOR_SYR82X) += syr82x.o +obj-$(CONFIG_REGULATOR_ETA3555) += eta3555.o obj-$(CONFIG_REGULATOR_RICOH619) += ricoh619-regulator.o obj-$(CONFIG_REGULATOR_RT5025) += rt5025-regulator.o obj-$(CONFIG_REGULATOR_RT5036) += rt5036-regulator.o diff --git a/drivers/regulator/eta3555.c b/drivers/regulator/eta3555.c new file mode 100755 index 000000000000..d518b9167fb6 --- /dev/null +++ b/drivers/regulator/eta3555.c @@ -0,0 +1,608 @@ +/* + * Regulator driver for eta3555 DCDC chip for rk32xx + * + * Copyright (C) 2010, 2011 ROCKCHIP, Inc. + + * Based on eta3555.c that is work by zhangqing + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if 0 +#define DBG(x...) printk(KERN_INFO x) +#else +#define DBG(x...) +#endif +#if 0 +#define DBG_INFO(x...) printk(KERN_INFO x) +#else +#define DBG_INFO(x...) +#endif +#define PM_CONTROL + +#define ETA3555_SPEED 200*1000 +#define ETA3555_NUM_REGULATORS 1 + +struct eta3555 { + struct device *dev; + struct mutex io_lock; + struct i2c_client *i2c; + int num_regulators; + struct regulator_dev **rdev; + int irq_base; + int chip_irq; + int sleep_gpio; /* */ + unsigned int dcdc_slp_voltage[3]; /* buckx_voltage in uV */ + bool pmic_sleep; + struct regmap *regmap; +}; + +struct eta3555_regulator { + struct device *dev; + struct regulator_desc *desc; + struct regulator_dev *rdev; +}; +struct eta3555_board { + int irq; + int irq_base; + struct regulator_init_data *eta3555_init_data[ETA3555_NUM_REGULATORS]; + struct device_node *of_node[ETA3555_NUM_REGULATORS]; + int sleep_gpio; /* */ + unsigned int dcdc_slp_voltage[3]; /* buckx_voltage in uV */ + bool sleep; +}; + +struct eta3555_regulator_subdev { + int id; + struct regulator_init_data *initdata; + struct device_node *reg_node; +}; + +struct eta3555_platform_data { + int ono; + int num_regulators; + struct eta3555_regulator_subdev *regulators; + + int sleep_gpio; /* */ + unsigned int dcdc_slp_voltage[3]; /* buckx_voltage in uV */ + bool sleep; +}; +struct eta3555 *g_eta3555; + +static int eta3555_reg_read(struct eta3555 *eta3555, u8 reg); +static int eta3555_set_bits(struct eta3555 *eta3555, u8 reg, u16 mask, u16 val); + + +#define ETA3555_BUCK1_SET_VOL_BASE 0x00 +#define ETA3555_BUCK1_SLP_VOL_BASE 0x01 +#define ETA3555_CONTR_REG1 0x02 +//#define ETA3555_ID1_REG 0x03 +//#define ETA3555_ID2_REG 0x04 +#define ETA3555_CONTR_REG2 0x05 + +#define BUCK_VOL_MASK 0x3f +#define VOL_MIN_IDX 0x00 +#define VOL_MAX_IDX 0x3f + +const static int buck_voltage_map[] = { + 603000, 615750, 628500, 641250, 654000, 666750, 679500, 692250, + 705000, 717750, 730500, 743250, 756000, 768750, 781500, 794250, + 807000, 819750, 832500, 845250, 858000, 870750, 883500, 896250, + 909000, 921750, 934500, 947250, 960000, 972750, 985500, 998250, + 1011000, 1023750, 1036500, 1049250, 1062000, 1074750, 1087500, 1100250, + 1113000, 1125750, 1138500, 1151250, 1164000, 1176750, 1189500, 1202250, + 1215000, 1227750, 1240500, 1253250, 1266000, 1278750, 1291500, 1304250, + 1317000, 1329750, 1342500, 1355250, 1368000, 1380750, 1393500, 1406250, + /* + 712500, 725000, 737500, 750000, 762500, 775000, 787500, 800000, + 812500, 825000, 837500,850000, 862500,875000,887500,900000, + 912500, 925000, 937500,950000, 962500,975000,987500,1000000, + 1012500, 1025000, 1037500,1050000, 1062500,1075000,1087500,1100000, + 1112500, 1125000, 1137500,1150000, 1162500,1175000,1187500,1200000, + 1212500, 1225000, 1237500,1250000, 1262500,1275000,1287500,1300000, + 1312500, 1325000, 1337500,1350000, 1362500,1375000,1387500,1400000, + 1412500, 1425000, 1437500,1450000, 1462500,1475000,1487500,1500000, +*/ +}; + +static int eta3555_dcdc_list_voltage(struct regulator_dev *dev, unsigned index) +{ + if (index >= ARRAY_SIZE(buck_voltage_map)) + return -EINVAL; + return buck_voltage_map[index]; +} +static int eta3555_dcdc_is_enabled(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 val; + u16 mask=0x80; + val = eta3555_reg_read(eta3555, ETA3555_BUCK1_SET_VOL_BASE); + if (val < 0) + return val; + val=val&~0x7f; + if (val & mask) + return 1; + else + return 0; +} +static int eta3555_dcdc_enable(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask=0x80; + + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SET_VOL_BASE, mask, 0x80); + +} +static int eta3555_dcdc_disable(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask=0x80; + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SET_VOL_BASE, mask, 0); +} +static int eta3555_dcdc_get_voltage(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 reg = 0; + int val; + reg = eta3555_reg_read(eta3555,ETA3555_BUCK1_SET_VOL_BASE); + reg &= BUCK_VOL_MASK; + val = buck_voltage_map[reg]; + return val; +} +static int eta3555_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV,unsigned *selector) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + const int *vol_map = buck_voltage_map; + u16 val; + int ret = 0; + + if (min_uV < vol_map[VOL_MIN_IDX] || + min_uV > vol_map[VOL_MAX_IDX]) + return -EINVAL; + + for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX; val++){ + if (vol_map[val] >= min_uV) + break; + } + + if (vol_map[val] > max_uV) + printk("WARNING:this voltage is not support!voltage set is %d mv\n",vol_map[val]); + + ret = eta3555_set_bits(eta3555, ETA3555_BUCK1_SET_VOL_BASE ,BUCK_VOL_MASK, val); + if(ret < 0) + printk("###################WARNING:set voltage is error!voltage set is %d mv %d\n",vol_map[val],ret); + + return ret; +} + +static unsigned int eta3555_dcdc_get_mode(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask = 0x40; + u16 val; + val = eta3555_reg_read(eta3555, ETA3555_BUCK1_SET_VOL_BASE); + if (val < 0) { + return val; + } + val=val & mask; + if (val== mask) + return REGULATOR_MODE_FAST; + else + return REGULATOR_MODE_NORMAL; + +} +static int eta3555_dcdc_set_mode(struct regulator_dev *dev, unsigned int mode) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask = 0x40; + + switch(mode) + { + case REGULATOR_MODE_FAST: + return eta3555_set_bits(eta3555,ETA3555_BUCK1_SET_VOL_BASE, mask, mask); + case REGULATOR_MODE_NORMAL: + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SET_VOL_BASE, mask, 0); + default: + printk("error:dcdc_eta3555 only auto and pwm mode\n"); + return -EINVAL; + } +} +static int eta3555_dcdc_set_voltage_time_sel(struct regulator_dev *dev, unsigned int old_selector, + unsigned int new_selector) +{ + int old_volt, new_volt; + + old_volt = eta3555_dcdc_list_voltage(dev, old_selector); + if (old_volt < 0) + return old_volt; + + new_volt = eta3555_dcdc_list_voltage(dev, new_selector); + if (new_volt < 0) + return new_volt; + + return DIV_ROUND_UP(abs(old_volt - new_volt)*4, 10000); +} +static int eta3555_dcdc_suspend_enable(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask=0x80; + + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SLP_VOL_BASE, mask, 0x80); + +} +static int eta3555_dcdc_suspend_disable(struct regulator_dev *dev) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask=0x80; + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SLP_VOL_BASE, mask, 0); +} +static int eta3555_dcdc_set_sleep_voltage(struct regulator_dev *dev, + int uV) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + const int *vol_map = buck_voltage_map; + u16 val; + int ret = 0; + + if (uV < vol_map[VOL_MIN_IDX] || + uV > vol_map[VOL_MAX_IDX]) + return -EINVAL; + + for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX; val++){ + if (vol_map[val] >= uV) + break; + } + + if (vol_map[val] > uV) + printk("WARNING:this voltage is not support!voltage set is %d mv\n",vol_map[val]); + ret = eta3555_set_bits(eta3555,ETA3555_BUCK1_SLP_VOL_BASE ,BUCK_VOL_MASK, val); + return ret; +} + + +static int eta3555_dcdc_set_suspend_mode(struct regulator_dev *dev, unsigned int mode) +{ + struct eta3555 *eta3555 = rdev_get_drvdata(dev); + u16 mask = 0x40; + + switch(mode) + { + case REGULATOR_MODE_FAST: + return eta3555_set_bits(eta3555,ETA3555_BUCK1_SLP_VOL_BASE, mask, mask); + case REGULATOR_MODE_NORMAL: + return eta3555_set_bits(eta3555, ETA3555_BUCK1_SLP_VOL_BASE, mask, 0); + default: + printk("error:dcdc_eta3555 only auto and pwm mode\n"); + return -EINVAL; + } +} + +static struct regulator_ops eta3555_dcdc_ops = { + .set_voltage = eta3555_dcdc_set_voltage, + .get_voltage = eta3555_dcdc_get_voltage, + .list_voltage= eta3555_dcdc_list_voltage, + .is_enabled = eta3555_dcdc_is_enabled, + .enable = eta3555_dcdc_enable, + .disable = eta3555_dcdc_disable, + .get_mode = eta3555_dcdc_get_mode, + .set_mode = eta3555_dcdc_set_mode, + .set_suspend_voltage = eta3555_dcdc_set_sleep_voltage, + .set_suspend_enable = eta3555_dcdc_suspend_enable, + .set_suspend_disable = eta3555_dcdc_suspend_disable, + .set_suspend_mode = eta3555_dcdc_set_suspend_mode, + .set_voltage_time_sel = eta3555_dcdc_set_voltage_time_sel, +}; +static struct regulator_desc regulators[] = { + + { + .name = "ETA_DCDC1", + .id = 0, + .ops = &eta3555_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, +}; + +static int eta3555_i2c_read(struct i2c_client *i2c, char reg, int count, u16 *dest) +{ + int ret; + struct i2c_adapter *adap; + struct i2c_msg msgs[2]; + + if(!i2c) + return ret; + + if (count != 1) + return -EIO; + + adap = i2c->adapter; + + msgs[0].addr = i2c->addr; + msgs[0].buf = ® + msgs[0].flags = i2c->flags; + msgs[0].len = 1; + msgs[0].scl_rate = ETA3555_SPEED; + + msgs[1].buf = (u8 *)dest; + msgs[1].addr = i2c->addr; + msgs[1].flags = i2c->flags | I2C_M_RD; + msgs[1].len = 1; + msgs[1].scl_rate = ETA3555_SPEED; + ret = i2c_transfer(adap, msgs, 2); + + DBG("***run in %s %d msgs[1].buf = %d\n",__FUNCTION__,__LINE__,*(msgs[1].buf)); + + return ret; +} + +static int eta3555_i2c_write(struct i2c_client *i2c, char reg, int count, const u16 src) +{ + int ret=-1; + + struct i2c_adapter *adap; + struct i2c_msg msg; + char tx_buf[2]; + + if(!i2c) + return ret; + if (count != 1) + return -EIO; + + adap = i2c->adapter; + tx_buf[0] = reg; + tx_buf[1] = src; + + msg.addr = i2c->addr; + msg.buf = &tx_buf[0]; + msg.len = 1 +1; + msg.flags = i2c->flags; + msg.scl_rate = ETA3555_SPEED; + + ret = i2c_transfer(adap, &msg, 1); + return ret; +} + +static int eta3555_reg_read(struct eta3555 *eta3555, u8 reg) +{ + u16 val = 0; + int ret; + + mutex_lock(&eta3555->io_lock); + + ret = eta3555_i2c_read(eta3555->i2c, reg, 1, &val); + + DBG("reg read 0x%02x -> 0x%02x\n", (int)reg, (unsigned)val&0xff); + if (ret < 0){ + mutex_unlock(&eta3555->io_lock); + return ret; + } + mutex_unlock(&eta3555->io_lock); + + return val & 0xff; +} + +static int eta3555_set_bits(struct eta3555 *eta3555, u8 reg, u16 mask, u16 val) +{ + u16 tmp; + int ret; + + mutex_lock(&eta3555->io_lock); + + ret = eta3555_i2c_read(eta3555->i2c, reg, 1, &tmp); + DBG("1 reg read 0x%02x -> 0x%02x\n", (int)reg, (unsigned)tmp&0xff); + if (ret < 0){ + mutex_unlock(&eta3555->io_lock); + return ret; + } + tmp = (tmp & ~mask) | val; + ret = eta3555_i2c_write(eta3555->i2c, reg, 1, tmp); + DBG("reg write 0x%02x -> 0x%02x\n", (int)reg, (unsigned)val&0xff); + if (ret < 0){ + mutex_unlock(&eta3555->io_lock); + return ret; + } + ret = eta3555_i2c_read(eta3555->i2c, reg, 1, &tmp); + DBG("2 reg read 0x%02x -> 0x%02x\n", (int)reg, (unsigned)tmp&0xff); + if (ret < 0){ + mutex_unlock(&eta3555->io_lock); + return ret; + } + mutex_unlock(&eta3555->io_lock); + + return 0;//ret; +} + +#ifdef CONFIG_OF +static struct of_device_id eta3555_of_match[] = { + { .compatible = "eta3555"}, + { }, +}; +MODULE_DEVICE_TABLE(of, eta3555_of_match); +#endif +#ifdef CONFIG_OF +static struct of_regulator_match eta3555_reg_matches[] = { + { .name = "eta_dcdc1" ,.driver_data = (void *)0}, +}; + +static struct eta3555_board *eta3555_parse_dt(struct eta3555 *eta3555) +{ + struct eta3555_board *pdata; + struct device_node *regs; + struct device_node *eta3555_np; + int count; + DBG("%s,line=%d\n", __func__,__LINE__); + eta3555_np = of_node_get(eta3555->dev->of_node); + if (!eta3555_np) { + printk("could not find pmic sub-node\n"); + return NULL; + } + + regs = of_find_node_by_name(eta3555_np, "regulators"); + if (!regs) + return NULL; + count = of_regulator_match(eta3555->dev, regs, eta3555_reg_matches, + ETA3555_NUM_REGULATORS); + of_node_put(regs); + pdata = devm_kzalloc(eta3555->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + pdata->eta3555_init_data[0] = eta3555_reg_matches[0].init_data; + pdata->of_node[0] = eta3555_reg_matches[0].of_node; + + return pdata; +} + +#else +static struct eta3555_board *eta3555_parse_dt(struct i2c_client *i2c) +{ + return NULL; +} +#endif + +static int eta3555_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) +{ + struct eta3555 *eta3555; + struct eta3555_board *pdev ; + const struct of_device_id *match; + struct regulator_config config = { }; + struct regulator_dev *eta_rdev; + struct regulator_init_data *reg_data; + const char *rail_name = NULL; + int ret; + + DBG("%s,line=%d\n", __func__,__LINE__); + + if (i2c->dev.of_node) { + match = of_match_device(eta3555_of_match, &i2c->dev); + if (!match) { + printk("Failed to find matching dt id\n"); + return -EINVAL; + } + } + + eta3555 = devm_kzalloc(&i2c->dev,sizeof(struct eta3555), GFP_KERNEL); + if (eta3555 == NULL) { + ret = -ENOMEM; + goto err; + } + eta3555->i2c = i2c; + eta3555->dev = &i2c->dev; + i2c_set_clientdata(i2c, eta3555); + g_eta3555 = eta3555; + + mutex_init(&eta3555->io_lock); + + if (eta3555->dev->of_node) + pdev = eta3555_parse_dt(eta3555); + + if (pdev) { + eta3555->num_regulators = ETA3555_NUM_REGULATORS; + eta3555->rdev = kcalloc(ETA3555_NUM_REGULATORS,sizeof(struct regulator_dev *), GFP_KERNEL); + if (!eta3555->rdev) { + return -ENOMEM; + } + /* Instantiate the regulators */ + reg_data = pdev->eta3555_init_data[0]; + config.dev = eta3555->dev; + config.driver_data = eta3555; + + if (eta3555->dev->of_node) + config.of_node = pdev->of_node[0]; + if (reg_data && reg_data->constraints.name) + { + rail_name = reg_data->constraints.name; + } + else + { + rail_name = regulators[0].name; + } + reg_data->supply_regulator = rail_name; + + config.init_data =reg_data; + eta_rdev = regulator_register(®ulators[0],&config); + if (IS_ERR(eta_rdev)) { + printk("failed to register regulator\n"); + goto err; + } + eta3555->rdev[0] = eta_rdev; + } + return 0; +err: + return ret; + +} + +static int eta3555_i2c_remove(struct i2c_client *i2c) +{ + struct eta3555 *eta3555 = i2c_get_clientdata(i2c); + + if (eta3555->rdev[0]) + regulator_unregister(eta3555->rdev[0]); + i2c_set_clientdata(i2c, NULL); + return 0; +} + +static const struct i2c_device_id eta3555_i2c_id[] = { + { "eta3555", 0 }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, eta3555_i2c_id); + +static struct i2c_driver eta3555_i2c_driver = { + .driver = { + .name = "eta3555", + .owner = THIS_MODULE, + .of_match_table =of_match_ptr(eta3555_of_match), + }, + .probe = eta3555_i2c_probe, + .remove = eta3555_i2c_remove, + .id_table = eta3555_i2c_id, +}; + +static int __init eta3555_module_init(void) +{ + int ret; + ret = i2c_add_driver(&eta3555_i2c_driver); + if (ret != 0) + pr_err("Failed to register I2C driver: %d\n", ret); + return ret; +} +subsys_initcall_sync(eta3555_module_init); + +static void __exit eta3555_module_exit(void) +{ + i2c_del_driver(&eta3555_i2c_driver); +} +module_exit(eta3555_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("zhangqing "); +MODULE_DESCRIPTION("eta3555 PMIC driver"); +