X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fmfd%2Frk808.c;h=313963c9aa729e51a4f6a63c984010134dd19ca5;hb=c216735099e53d8cb61b26f598fd52a293062ded;hp=1dafebac68acb0d85cbea11a56aa11077d483e42;hpb=927b5a2bd7e0ca06412cd3536e48b2a89bff0dfc;p=firefly-linux-kernel-4.4.55.git diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c index 1dafebac68ac..313963c9aa72 100644 --- a/drivers/mfd/rk808.c +++ b/drivers/mfd/rk808.c @@ -18,11 +18,12 @@ #include #include +#include #include #include #include -#include #include +#include struct rk808_reg_data { int addr; @@ -30,16 +31,6 @@ struct rk808_reg_data { int value; }; -struct rk8xx_power_data { - char *name; - const struct rk808_reg_data *rk8xx_pre_init_reg; - int reg_num; - const struct regmap_config *rk8xx_regmap_config; - const struct mfd_cell *rk8xx_cell; - int cell_num; - struct regmap_irq_chip *rk8xx_irq_chip; -}; - static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) { /* @@ -68,6 +59,77 @@ static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) return false; } +static int rk808_shutdown(struct regmap *regmap) +{ + int ret; + + ret = regmap_update_bits(regmap, + RK808_DEVCTRL_REG, + DEV_OFF_RST, DEV_OFF_RST); + return ret; +} + +static int rk818_shutdown(struct regmap *regmap) +{ + int ret; + + ret = regmap_update_bits(regmap, + RK818_DEVCTRL_REG, + DEV_OFF, DEV_OFF); + return ret; +} + +static int rk805_shutdown_prepare(struct regmap *regmap) +{ + int ret; + + /* close rtc int when power off */ + regmap_update_bits(regmap, + RK808_INT_STS_MSK_REG1, + (0x3 << 5), (0x3 << 5)); + regmap_update_bits(regmap, + RK808_RTC_INT_REG, + (0x3 << 2), (0x0 << 2)); + + /* pmic sleep shutdown function */ + ret = regmap_update_bits(regmap, + RK805_GPIO_IO_POL_REG, + SLP_SD_MSK, SHUTDOWN_FUN); + return ret; +} + +static bool rk818_is_volatile_reg(struct device *dev, unsigned int reg) +{ + /* + * Notes: + * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but + * we don't use that feature. It's better to cache. + * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since + * bits are cleared in case when we shutoff anyway, but better safe. + */ + + switch (reg) { + case RK808_SECONDS_REG ... RK808_WEEKS_REG: + case RK808_RTC_STATUS_REG: + case RK808_VB_MON_REG: + case RK808_THERMAL_REG: + case RK808_DCDC_EN_REG: + case RK808_DCDC_UV_STS_REG: + case RK808_LDO_UV_STS_REG: + case RK808_DCDC_PG_REG: + case RK808_LDO_PG_REG: + case RK808_DEVCTRL_REG: + case RK808_INT_STS_REG1: + case RK808_INT_STS_REG2: + case RK808_INT_STS_MSK_REG1: + case RK808_INT_STS_MSK_REG2: + case RK818_SUP_STS_REG ... RK818_SAVE_DATA19: + return true; + } + + return false; +} + static const struct regmap_config rk808_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -76,6 +138,14 @@ static const struct regmap_config rk808_regmap_config = { .volatile_reg = rk808_is_volatile_reg, }; +static const struct regmap_config rk805_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RK805_OFF_SOURCE_REG, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = rk808_is_volatile_reg, +}; + static struct resource rtc_resources[] = { { .start = RK808_IRQ_RTC_ALARM, @@ -84,6 +154,19 @@ static struct resource rtc_resources[] = { } }; +static struct resource pwrkey_resources[] = { + { + .start = RK805_IRQ_PWRON_RISE, + .end = RK805_IRQ_PWRON_RISE, + .flags = IORESOURCE_IRQ, + }, + { + .start = RK805_IRQ_PWRON_FALL, + .end = RK805_IRQ_PWRON_FALL, + .flags = IORESOURCE_IRQ, + }, +}; + static const struct mfd_cell rk808s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, @@ -94,13 +177,14 @@ static const struct mfd_cell rk808s[] = { }, }; -static const struct rk808_reg_data pre_init_reg[] = { +static const struct rk808_reg_data rk808_pre_init_reg[] = { { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA }, { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA }, { RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE}, + { RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, }; @@ -164,12 +248,14 @@ static const struct regmap_config rk818_regmap_config = { .val_bits = 8, .max_register = RK818_SAVE_DATA19, .cache_type = REGCACHE_RBTREE, - .volatile_reg = rk808_is_volatile_reg, + .volatile_reg = rk818_is_volatile_reg, }; static const struct mfd_cell rk818s[] = { { .name = "rk808-clkout", }, - { .name = "rk818-regulator", }, + { .name = "rk808-regulator", }, + { .name = "rk818-battery", .of_compatible = "rk818-battery", }, + { .name = "rk818-charger", }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rtc_resources), @@ -184,6 +270,7 @@ static const struct rk808_reg_data rk818_pre_init_reg[] = { BOOST_EN_ENABLE | SWITCH_EN_ENABLE }, { RK818_SLEEP_SET_OFF_REG1, OTG_SLP_SET_MASK, OTG_SLP_SET_OFF }, { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA }, + { RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, }; static const struct regmap_irq rk818_irqs[] = { @@ -245,6 +332,10 @@ static const struct regmap_irq rk818_irqs[] = { .mask = TS2_MASK, .reg_offset = 1, }, + [RK818_IRQ_CHG_CVTLIM] = { + .mask = CHG_CVTLIM_MASK, + .reg_offset = 1, + }, [RK818_IRQ_DISCHG_ILIM] = { .mask = DISCHG_ILIM_MASK, .reg_offset = 1, @@ -263,27 +354,97 @@ static struct regmap_irq_chip rk818_irq_chip = { .init_ack_masked = true, }; -static struct rk8xx_power_data rk808_power_data = { - .name = "rk808", - .rk8xx_pre_init_reg = pre_init_reg, - .reg_num = ARRAY_SIZE(pre_init_reg), - .rk8xx_regmap_config = &rk808_regmap_config, - .rk8xx_cell = rk808s, - .cell_num = ARRAY_SIZE(rk808s), - .rk8xx_irq_chip = &rk808_irq_chip, +static const struct regmap_irq rk805_irqs[] = { + [RK805_IRQ_PWRON_RISE] = { + .mask = RK805_IRQ_PWRON_RISE_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_VB_LOW] = { + .mask = RK805_IRQ_VB_LOW_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_PWRON] = { + .mask = RK805_IRQ_PWRON_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_PWRON_LP] = { + .mask = RK805_IRQ_PWRON_LP_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_HOTDIE] = { + .mask = RK805_IRQ_HOTDIE_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_RTC_ALARM] = { + .mask = RK805_IRQ_RTC_ALARM_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_RTC_PERIOD] = { + .mask = RK805_IRQ_RTC_PERIOD_MSK, + .reg_offset = 0, + }, + [RK805_IRQ_PWRON_FALL] = { + .mask = RK805_IRQ_PWRON_FALL_MSK, + .reg_offset = 0, + }, }; -static struct rk8xx_power_data rk818_power_data = { - .name = "rk818", - .rk8xx_pre_init_reg = rk818_pre_init_reg, - .reg_num = ARRAY_SIZE(rk818_pre_init_reg), - .rk8xx_regmap_config = &rk818_regmap_config, - .rk8xx_cell = rk818s, - .cell_num = ARRAY_SIZE(rk818s), - .rk8xx_irq_chip = &rk818_irq_chip, +static struct regmap_irq_chip rk805_irq_chip = { + .name = "rk805", + .irqs = rk805_irqs, + .num_irqs = ARRAY_SIZE(rk805_irqs), + .num_regs = 1, + .status_base = RK805_INT_STS_REG, + .mask_base = RK805_INT_STS_MSK_REG, + .ack_base = RK805_INT_STS_REG, + .init_ack_masked = true, }; +static const struct mfd_cell rk805s[] = { + { .name = "rk818-regulator", }, + { .name = "rk8xx-gpio", }, + { + .name = "rk8xx-pwrkey", + .num_resources = ARRAY_SIZE(pwrkey_resources), + .resources = &pwrkey_resources[0], + }, + { + .name = "rk808-rtc", + .num_resources = ARRAY_SIZE(rtc_resources), + .resources = &rtc_resources[0], + }, +}; + +static const struct rk808_reg_data rk805_pre_init_reg[] = { + {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA}, + {RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN}, + {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, + {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C}, +}; + +static int (*pm_shutdown)(struct regmap *regmap); +static int (*pm_shutdown_prepare)(struct regmap *regmap); static struct i2c_client *rk808_i2c_client; + +static void rk808_device_shutdown_prepare(void) +{ + int ret; + struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); + + if (!rk808) { + dev_warn(&rk808_i2c_client->dev, + "have no rk808, so do nothing here\n"); + return; + } + + if (pm_shutdown_prepare) { + ret = pm_shutdown_prepare(rk808->regmap); + if (ret) + dev_err(&rk808_i2c_client->dev, + "power off prepare error!\n"); + } +} + static void rk808_device_shutdown(void) { int ret; @@ -295,42 +456,92 @@ static void rk808_device_shutdown(void) return; } - ret = regmap_update_bits(rk808->regmap, - RK808_DEVCTRL_REG, - DEV_OFF_RST, DEV_OFF_RST); - if (ret) - dev_err(&rk808_i2c_client->dev, "power off error!\n"); + /* close rtc int when power off */ + regmap_update_bits(rk808->regmap, + RK808_INT_STS_MSK_REG1, + (0x3 << 5), (0x3 << 5)); + regmap_update_bits(rk808->regmap, + RK808_RTC_INT_REG, + (0x3 << 2), (0x0 << 2)); + if (pm_shutdown) { + ret = pm_shutdown(rk808->regmap); + if (ret) + dev_err(&rk808_i2c_client->dev, "power off error!\n"); + } +} + +static ssize_t rk8xx_dbg_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret; + char cmd; + u32 input[2], addr, data; + struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); + + ret = sscanf(buf, "%c ", &cmd); + switch (cmd) { + case 'w': + ret = sscanf(buf, "%c %x %x ", &cmd, &input[0], &input[1]); + if (ret != 3) { + pr_err("erro! cmd format: echo w [addr] [value]\n"); + goto out; + }; + addr = input[0] & 0xff; + data = input[1] & 0xff; + pr_info("cmd : %c %x %x\n\n", cmd, input[0], input[1]); + regmap_write(rk808->regmap, addr, data); + regmap_read(rk808->regmap, addr, &data); + pr_info("new: %x %x\n", addr, data); + break; + case 'r': + ret = sscanf(buf, "%c %x ", &cmd, &input[0]); + if (ret != 2) { + pr_err("erro! cmd format: echo r [addr]\n"); + goto out; + }; + pr_info("cmd : %c %x\n\n", cmd, input[0]); + addr = input[0] & 0xff; + regmap_read(rk808->regmap, addr, &data); + pr_info("%x %x\n", input[0], data); + break; + default: + pr_err("Unknown command\n"); + break; + } + +out: + return count; } +static struct kobject *rk8xx_kobj; +static struct device_attribute rk8xx_attrs = + __ATTR(rk8xx_dbg, 0200, NULL, rk8xx_dbg_store); + static const struct of_device_id rk808_of_match[] = { - { - .compatible = "rockchip,rk808", - .data = &rk808_power_data, - }, - { - .compatible = "rockchip,rk818", - .data = &rk818_power_data, - }, + { .compatible = "rockchip,rk805" }, + { .compatible = "rockchip,rk808" }, + { .compatible = "rockchip,rk818" }, { }, }; + MODULE_DEVICE_TABLE(of, rk808_of_match); static int rk808_probe(struct i2c_client *client, const struct i2c_device_id *id) { - const struct of_device_id *of_id = - of_match_device(rk808_of_match, &client->dev); - const struct rk8xx_power_data *pdata = of_id->data; struct device_node *np = client->dev.of_node; struct rk808 *rk808; - int pm_off = 0; - int ret; - int i; - - if (!of_id) { - dev_err(&client->dev, "Failed to find matching dt id\n"); - return -ENODEV; - } + int (*pm_shutdown_fn)(struct regmap *regmap) = NULL; + int (*pm_shutdown_prepare_fn)(struct regmap *regmap) = NULL; + const struct rk808_reg_data *pre_init_reg; + const struct regmap_config *regmap_config; + const struct regmap_irq_chip *irq_chip; + const struct mfd_cell *cell; + u8 on_source = 0, off_source = 0; + int msb, lsb, reg_num, cell_num; + int ret, i, pm_off = 0; + unsigned int on, off; if (!client->irq) { dev_err(&client->dev, "No interrupt support, no core IRQ\n"); @@ -341,29 +552,103 @@ static int rk808_probe(struct i2c_client *client, if (!rk808) return -ENOMEM; - rk808->regmap = devm_regmap_init_i2c(client, - pdata->rk8xx_regmap_config); + /* read Chip variant */ + msb = i2c_smbus_read_byte_data(client, RK808_ID_MSB); + if (msb < 0) { + dev_err(&client->dev, "failed to read the chip id at 0x%x\n", + RK808_ID_MSB); + return msb; + } + + lsb = i2c_smbus_read_byte_data(client, RK808_ID_LSB); + if (lsb < 0) { + dev_err(&client->dev, "failed to read the chip id at 0x%x\n", + RK808_ID_LSB); + return lsb; + } + + rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK; + dev_info(&client->dev, "Pmic Chip id: 0x%lx\n", rk808->variant); + + /* set Chip platform init data*/ + switch (rk808->variant) { + case RK818_ID: + cell = rk818s; + cell_num = ARRAY_SIZE(rk818s); + pre_init_reg = rk818_pre_init_reg; + reg_num = ARRAY_SIZE(rk818_pre_init_reg); + regmap_config = &rk818_regmap_config; + irq_chip = &rk818_irq_chip; + pm_shutdown_fn = rk818_shutdown; + on_source = RK818_ON_SOURCE_REG; + off_source = RK818_OFF_SOURCE_REG; + break; + case RK808_ID: + cell = rk808s; + cell_num = ARRAY_SIZE(rk808s); + pre_init_reg = rk808_pre_init_reg; + reg_num = ARRAY_SIZE(rk808_pre_init_reg); + regmap_config = &rk808_regmap_config; + irq_chip = &rk808_irq_chip; + pm_shutdown_fn = rk808_shutdown; + break; + case RK805_ID: + cell = rk805s; + cell_num = ARRAY_SIZE(rk805s); + pre_init_reg = rk805_pre_init_reg; + reg_num = ARRAY_SIZE(rk805_pre_init_reg); + regmap_config = &rk805_regmap_config; + irq_chip = &rk805_irq_chip; + pm_shutdown_prepare_fn = rk805_shutdown_prepare; + on_source = RK805_ON_SOURCE_REG; + off_source = RK805_OFF_SOURCE_REG; + break; + default: + dev_err(&client->dev, "unsupported RK8XX ID 0x%lx\n", + rk808->variant); + return -EINVAL; + } + + rk808->regmap = devm_regmap_init_i2c(client, regmap_config); if (IS_ERR(rk808->regmap)) { dev_err(&client->dev, "regmap initialization failed\n"); return PTR_ERR(rk808->regmap); } - for (i = 0; i < pdata->reg_num; i++) { + /* on & off source */ + if (on_source && off_source) { + ret = regmap_read(rk808->regmap, on_source, &on); + if (ret) { + dev_err(&client->dev, "read 0x%x failed\n", on_source); + return ret; + } + + ret = regmap_read(rk808->regmap, off_source, &off); + if (ret) { + dev_err(&client->dev, "read 0x%x failed\n", off_source); + return ret; + } + + dev_info(&client->dev, "source: on=0x%02x, off=0x%02x\n", + on, off); + } + + for (i = 0; i < reg_num; i++) { ret = regmap_update_bits(rk808->regmap, - pdata->rk8xx_pre_init_reg[i].addr, - pdata->rk8xx_pre_init_reg[i].mask, - pdata->rk8xx_pre_init_reg[i].value); + pre_init_reg[i].addr, + pre_init_reg[i].mask, + pre_init_reg[i].value); if (ret) { dev_err(&client->dev, "0x%x write err\n", - pdata->rk8xx_pre_init_reg[i].addr); + pre_init_reg[i].addr); return ret; } } ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT, -1, - pdata->rk8xx_irq_chip, &rk808->irq_data); + irq_chip, &rk808->irq_data); if (ret) { dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); return ret; @@ -373,7 +658,7 @@ static int rk808_probe(struct i2c_client *client, i2c_set_clientdata(client, rk808); ret = mfd_add_devices(&client->dev, -1, - pdata->rk8xx_cell, pdata->cell_num, + cell, cell_num, NULL, 0, regmap_irq_get_domain(rk808->irq_data)); if (ret) { dev_err(&client->dev, "failed to add MFD devices %d\n", ret); @@ -382,9 +667,23 @@ static int rk808_probe(struct i2c_client *client, pm_off = of_property_read_bool(np, "rockchip,system-power-controller"); - if (pm_off && !pm_power_off) { + if (pm_off) { rk808_i2c_client = client; - pm_power_off = rk808_device_shutdown; + if (pm_shutdown_prepare_fn) { + pm_shutdown_prepare = pm_shutdown_prepare_fn; + pm_power_off_prepare = rk808_device_shutdown_prepare; + } + if (pm_shutdown_fn) { + pm_shutdown = pm_shutdown_fn; + pm_power_off = rk808_device_shutdown; + } + } + + rk8xx_kobj = kobject_create_and_add("rk8xx", NULL); + if (rk8xx_kobj) { + ret = sysfs_create_file(rk8xx_kobj, &rk8xx_attrs.attr); + if (ret) + dev_err(&client->dev, "create rk8xx sysfs error\n"); } return 0; @@ -400,12 +699,16 @@ static int rk808_remove(struct i2c_client *client) regmap_del_irq_chip(client->irq, rk808->irq_data); mfd_remove_devices(&client->dev); - pm_power_off = NULL; + if (pm_power_off == rk808_device_shutdown) + pm_power_off = NULL; + if (pm_power_off_prepare == rk808_device_shutdown_prepare) + pm_power_off_prepare = NULL; return 0; } static const struct i2c_device_id rk808_ids[] = { + { "rk805" }, { "rk808" }, { "rk818" }, { }, @@ -427,4 +730,5 @@ module_i2c_driver(rk808_i2c_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Chris Zhong "); MODULE_AUTHOR("Zhang Qing "); +MODULE_AUTHOR("Chen jianhong "); MODULE_DESCRIPTION("RK808 PMIC driver");