mfd: RK808: Add new mfd driver for RK808
The RK808 chip is a power management IC for multimedia and handheld devices. It contains the following components: - Regulators - RTC - Clkout The RK808 core driver is registered as a platform driver and provides communication through I2C with the host device for the different components. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Zhang Qing <zhangqing@rock-chips.com> Tested-by: Heiko <heiko@sntech.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>hifive-unleashed-5.1
Chris Zhong
Lee Jones
parent
a53b9a97ac
commit
f69a7cf74d
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@ -597,6 +597,19 @@ config MFD_RC5T583
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Additional drivers must be enabled in order to use the
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different functionality of the device.
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config MFD_RK808
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tristate "Rockchip RK808 Power Management chip"
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depends on I2C && OF
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select MFD_CORE
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select REGMAP_I2C
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select REGMAP_IRQ
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help
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If you say yes here you get support for the RK808
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Power Management chips.
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This driver provides common support for accessing the device
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through I2C interface. The device supports multiple sub-devices
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including interrupts, RTC, LDO & DCDC regulators, and onkey.
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config MFD_RN5T618
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tristate "Ricoh RN5T5618 PMIC"
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depends on I2C
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@ -160,6 +160,7 @@ obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o
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obj-$(CONFIG_MFD_PALMAS) += palmas.o
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obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o
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obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
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obj-$(CONFIG_MFD_RK808) += rk808.o
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obj-$(CONFIG_MFD_RN5T618) += rn5t618.o
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obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
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obj-$(CONFIG_MFD_SYSCON) += syscon.o
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@ -0,0 +1,245 @@
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/*
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* MFD core driver for Rockchip RK808
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*
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* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
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*
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* Author: Chris Zhong <zyw@rock-chips.com>
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* Author: Zhang Qing <zhangqing@rock-chips.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/rk808.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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struct rk808_reg_data {
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int addr;
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int mask;
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int value;
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};
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static const struct regmap_config rk808_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK808_IO_POL_REG,
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};
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static struct resource rtc_resources[] = {
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{
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.start = RK808_IRQ_RTC_ALARM,
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.end = RK808_IRQ_RTC_ALARM,
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.flags = IORESOURCE_IRQ,
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}
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};
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static const struct mfd_cell rk808s[] = {
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{ .name = "rk808-clkout", },
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{ .name = "rk808-regulator", },
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{
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.name = "rk808-rtc",
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.num_resources = ARRAY_SIZE(rtc_resources),
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.resources = &rtc_resources[0],
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},
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};
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static const struct rk808_reg_data pre_init_reg[] = {
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{ RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA },
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{ RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA },
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{ RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
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{ RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA },
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{ RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA },
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{ RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT |
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VB_LO_SEL_3500MV },
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};
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static const struct regmap_irq rk808_irqs[] = {
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/* INT_STS */
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[RK808_IRQ_VOUT_LO] = {
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.mask = RK808_IRQ_VOUT_LO_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_VB_LO] = {
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.mask = RK808_IRQ_VB_LO_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_PWRON] = {
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.mask = RK808_IRQ_PWRON_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_PWRON_LP] = {
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.mask = RK808_IRQ_PWRON_LP_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_HOTDIE] = {
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.mask = RK808_IRQ_HOTDIE_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_RTC_ALARM] = {
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.mask = RK808_IRQ_RTC_ALARM_MSK,
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.reg_offset = 0,
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},
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[RK808_IRQ_RTC_PERIOD] = {
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.mask = RK808_IRQ_RTC_PERIOD_MSK,
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.reg_offset = 0,
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},
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/* INT_STS2 */
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[RK808_IRQ_PLUG_IN_INT] = {
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.mask = RK808_IRQ_PLUG_IN_INT_MSK,
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.reg_offset = 1,
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},
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[RK808_IRQ_PLUG_OUT_INT] = {
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.mask = RK808_IRQ_PLUG_OUT_INT_MSK,
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.reg_offset = 1,
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},
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};
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static struct regmap_irq_chip rk808_irq_chip = {
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.name = "rk808",
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.irqs = rk808_irqs,
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.num_irqs = ARRAY_SIZE(rk808_irqs),
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.num_regs = 2,
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.irq_reg_stride = 2,
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.status_base = RK808_INT_STS_REG1,
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.mask_base = RK808_INT_STS_MSK_REG1,
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.ack_base = RK808_INT_STS_REG1,
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.init_ack_masked = true,
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};
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static struct i2c_client *rk808_i2c_client;
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static void rk808_device_shutdown(void)
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{
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int ret;
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struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
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if (!rk808) {
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dev_warn(&rk808_i2c_client->dev,
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"have no rk808, so do nothing here\n");
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return;
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}
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ret = regmap_update_bits(rk808->regmap,
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RK808_DEVCTRL_REG,
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DEV_OFF_RST, DEV_OFF_RST);
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if (ret)
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dev_err(&rk808_i2c_client->dev, "power off error!\n");
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}
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static int rk808_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device_node *np = client->dev.of_node;
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struct rk808 *rk808;
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int pm_off = 0;
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int ret;
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int i;
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if (!client->irq) {
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dev_err(&client->dev, "No interrupt support, no core IRQ\n");
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return -EINVAL;
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}
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rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
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if (!rk808)
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return -ENOMEM;
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rk808->regmap = devm_regmap_init_i2c(client, &rk808_regmap_config);
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if (IS_ERR(rk808->regmap)) {
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dev_err(&client->dev, "regmap initialization failed\n");
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return PTR_ERR(rk808->regmap);
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}
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for (i = 0; i < ARRAY_SIZE(pre_init_reg); i++) {
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ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr,
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pre_init_reg[i].mask,
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pre_init_reg[i].value);
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if (ret) {
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dev_err(&client->dev,
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"0x%x write err\n", pre_init_reg[i].addr);
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return ret;
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}
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}
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ret = regmap_add_irq_chip(rk808->regmap, client->irq,
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IRQF_ONESHOT, -1,
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&rk808_irq_chip, &rk808->irq_data);
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if (ret) {
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dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
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return ret;
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}
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rk808->i2c = client;
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i2c_set_clientdata(client, rk808);
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ret = mfd_add_devices(&client->dev, -1,
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rk808s, ARRAY_SIZE(rk808s),
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NULL, 0, regmap_irq_get_domain(rk808->irq_data));
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if (ret) {
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dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
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goto err_irq;
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}
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pm_off = of_property_read_bool(np,
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"rockchip,system-power-controller");
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if (pm_off && !pm_power_off) {
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rk808_i2c_client = client;
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pm_power_off = rk808_device_shutdown;
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}
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return 0;
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err_irq:
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regmap_del_irq_chip(client->irq, rk808->irq_data);
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return ret;
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}
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static int rk808_remove(struct i2c_client *client)
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{
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struct rk808 *rk808 = i2c_get_clientdata(client);
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regmap_del_irq_chip(client->irq, rk808->irq_data);
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mfd_remove_devices(&client->dev);
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pm_power_off = NULL;
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return 0;
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}
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static struct of_device_id rk808_of_match[] = {
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{ .compatible = "rockchip,rk808" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, rk808_of_match);
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static const struct i2c_device_id rk808_ids[] = {
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{ "rk808" },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, rk808_ids);
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static struct i2c_driver rk808_i2c_driver = {
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.driver = {
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.name = "rk808",
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.of_match_table = rk808_of_match,
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},
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.probe = rk808_probe,
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.remove = rk808_remove,
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.id_table = rk808_ids,
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};
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module_i2c_driver(rk808_i2c_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
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MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
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MODULE_DESCRIPTION("RK808 PMIC driver");
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@ -0,0 +1,196 @@
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/*
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* rk808.h for Rockchip RK808
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*
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* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
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*
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* Author: Chris Zhong <zyw@rock-chips.com>
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* Author: Zhang Qing <zhangqing@rock-chips.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __LINUX_REGULATOR_rk808_H
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#define __LINUX_REGULATOR_rk808_H
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#include <linux/regulator/machine.h>
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#include <linux/regmap.h>
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/*
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* rk808 Global Register Map.
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*/
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#define RK808_DCDC1 0 /* (0+RK808_START) */
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#define RK808_LDO1 4 /* (4+RK808_START) */
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#define RK808_NUM_REGULATORS 14
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enum rk808_reg {
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RK808_ID_DCDC1,
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RK808_ID_DCDC2,
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RK808_ID_DCDC3,
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RK808_ID_DCDC4,
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RK808_ID_LDO1,
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RK808_ID_LDO2,
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RK808_ID_LDO3,
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RK808_ID_LDO4,
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RK808_ID_LDO5,
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RK808_ID_LDO6,
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RK808_ID_LDO7,
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RK808_ID_LDO8,
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RK808_ID_SWITCH1,
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RK808_ID_SWITCH2,
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};
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#define RK808_SECONDS_REG 0x00
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#define RK808_MINUTES_REG 0x01
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#define RK808_HOURS_REG 0x02
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#define RK808_DAYS_REG 0x03
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#define RK808_MONTHS_REG 0x04
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#define RK808_YEARS_REG 0x05
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#define RK808_WEEKS_REG 0x06
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#define RK808_ALARM_SECONDS_REG 0x08
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#define RK808_ALARM_MINUTES_REG 0x09
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#define RK808_ALARM_HOURS_REG 0x0a
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#define RK808_ALARM_DAYS_REG 0x0b
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#define RK808_ALARM_MONTHS_REG 0x0c
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#define RK808_ALARM_YEARS_REG 0x0d
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#define RK808_RTC_CTRL_REG 0x10
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#define RK808_RTC_STATUS_REG 0x11
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#define RK808_RTC_INT_REG 0x12
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#define RK808_RTC_COMP_LSB_REG 0x13
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#define RK808_RTC_COMP_MSB_REG 0x14
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#define RK808_CLK32OUT_REG 0x20
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#define RK808_VB_MON_REG 0x21
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#define RK808_THERMAL_REG 0x22
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#define RK808_DCDC_EN_REG 0x23
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#define RK808_LDO_EN_REG 0x24
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#define RK808_SLEEP_SET_OFF_REG1 0x25
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#define RK808_SLEEP_SET_OFF_REG2 0x26
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#define RK808_DCDC_UV_STS_REG 0x27
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#define RK808_DCDC_UV_ACT_REG 0x28
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#define RK808_LDO_UV_STS_REG 0x29
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#define RK808_LDO_UV_ACT_REG 0x2a
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#define RK808_DCDC_PG_REG 0x2b
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#define RK808_LDO_PG_REG 0x2c
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#define RK808_VOUT_MON_TDB_REG 0x2d
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#define RK808_BUCK1_CONFIG_REG 0x2e
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#define RK808_BUCK1_ON_VSEL_REG 0x2f
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#define RK808_BUCK1_SLP_VSEL_REG 0x30
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#define RK808_BUCK1_DVS_VSEL_REG 0x31
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#define RK808_BUCK2_CONFIG_REG 0x32
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#define RK808_BUCK2_ON_VSEL_REG 0x33
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#define RK808_BUCK2_SLP_VSEL_REG 0x34
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#define RK808_BUCK2_DVS_VSEL_REG 0x35
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#define RK808_BUCK3_CONFIG_REG 0x36
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#define RK808_BUCK4_CONFIG_REG 0x37
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#define RK808_BUCK4_ON_VSEL_REG 0x38
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#define RK808_BUCK4_SLP_VSEL_REG 0x39
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#define RK808_BOOST_CONFIG_REG 0x3a
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#define RK808_LDO1_ON_VSEL_REG 0x3b
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#define RK808_LDO1_SLP_VSEL_REG 0x3c
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#define RK808_LDO2_ON_VSEL_REG 0x3d
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#define RK808_LDO2_SLP_VSEL_REG 0x3e
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#define RK808_LDO3_ON_VSEL_REG 0x3f
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#define RK808_LDO3_SLP_VSEL_REG 0x40
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#define RK808_LDO4_ON_VSEL_REG 0x41
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#define RK808_LDO4_SLP_VSEL_REG 0x42
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#define RK808_LDO5_ON_VSEL_REG 0x43
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#define RK808_LDO5_SLP_VSEL_REG 0x44
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#define RK808_LDO6_ON_VSEL_REG 0x45
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#define RK808_LDO6_SLP_VSEL_REG 0x46
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#define RK808_LDO7_ON_VSEL_REG 0x47
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#define RK808_LDO7_SLP_VSEL_REG 0x48
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#define RK808_LDO8_ON_VSEL_REG 0x49
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#define RK808_LDO8_SLP_VSEL_REG 0x4a
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#define RK808_DEVCTRL_REG 0x4b
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#define RK808_INT_STS_REG1 0x4c
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#define RK808_INT_STS_MSK_REG1 0x4d
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#define RK808_INT_STS_REG2 0x4e
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#define RK808_INT_STS_MSK_REG2 0x4f
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#define RK808_IO_POL_REG 0x50
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/* IRQ Definitions */
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#define RK808_IRQ_VOUT_LO 0
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#define RK808_IRQ_VB_LO 1
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#define RK808_IRQ_PWRON 2
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#define RK808_IRQ_PWRON_LP 3
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#define RK808_IRQ_HOTDIE 4
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#define RK808_IRQ_RTC_ALARM 5
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#define RK808_IRQ_RTC_PERIOD 6
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#define RK808_IRQ_PLUG_IN_INT 7
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#define RK808_IRQ_PLUG_OUT_INT 8
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#define RK808_NUM_IRQ 9
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#define RK808_IRQ_VOUT_LO_MSK BIT(0)
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#define RK808_IRQ_VB_LO_MSK BIT(1)
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#define RK808_IRQ_PWRON_MSK BIT(2)
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#define RK808_IRQ_PWRON_LP_MSK BIT(3)
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#define RK808_IRQ_HOTDIE_MSK BIT(4)
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||||
#define RK808_IRQ_RTC_ALARM_MSK BIT(5)
|
||||
#define RK808_IRQ_RTC_PERIOD_MSK BIT(6)
|
||||
#define RK808_IRQ_PLUG_IN_INT_MSK BIT(0)
|
||||
#define RK808_IRQ_PLUG_OUT_INT_MSK BIT(1)
|
||||
|
||||
#define RK808_VBAT_LOW_2V8 0x00
|
||||
#define RK808_VBAT_LOW_2V9 0x01
|
||||
#define RK808_VBAT_LOW_3V0 0x02
|
||||
#define RK808_VBAT_LOW_3V1 0x03
|
||||
#define RK808_VBAT_LOW_3V2 0x04
|
||||
#define RK808_VBAT_LOW_3V3 0x05
|
||||
#define RK808_VBAT_LOW_3V4 0x06
|
||||
#define RK808_VBAT_LOW_3V5 0x07
|
||||
#define VBAT_LOW_VOL_MASK (0x07 << 0)
|
||||
#define EN_VABT_LOW_SHUT_DOWN (0x00 << 4)
|
||||
#define EN_VBAT_LOW_IRQ (0x1 << 4)
|
||||
#define VBAT_LOW_ACT_MASK (0x1 << 4)
|
||||
|
||||
#define BUCK_ILMIN_MASK (7 << 0)
|
||||
#define BOOST_ILMIN_MASK (7 << 0)
|
||||
#define BUCK1_RATE_MASK (3 << 3)
|
||||
#define BUCK2_RATE_MASK (3 << 3)
|
||||
#define MASK_ALL 0xff
|
||||
|
||||
#define SWITCH2_EN BIT(6)
|
||||
#define SWITCH1_EN BIT(5)
|
||||
#define DEV_OFF_RST BIT(3)
|
||||
|
||||
#define VB_LO_ACT BIT(4)
|
||||
#define VB_LO_SEL_3500MV (7 << 0)
|
||||
|
||||
#define VOUT_LO_INT BIT(0)
|
||||
#define CLK32KOUT2_EN BIT(0)
|
||||
|
||||
enum {
|
||||
BUCK_ILMIN_50MA,
|
||||
BUCK_ILMIN_100MA,
|
||||
BUCK_ILMIN_150MA,
|
||||
BUCK_ILMIN_200MA,
|
||||
BUCK_ILMIN_250MA,
|
||||
BUCK_ILMIN_300MA,
|
||||
BUCK_ILMIN_350MA,
|
||||
BUCK_ILMIN_400MA,
|
||||
};
|
||||
|
||||
enum {
|
||||
BOOST_ILMIN_75MA,
|
||||
BOOST_ILMIN_100MA,
|
||||
BOOST_ILMIN_125MA,
|
||||
BOOST_ILMIN_150MA,
|
||||
BOOST_ILMIN_175MA,
|
||||
BOOST_ILMIN_200MA,
|
||||
BOOST_ILMIN_225MA,
|
||||
BOOST_ILMIN_250MA,
|
||||
};
|
||||
|
||||
struct rk808 {
|
||||
struct i2c_client *i2c;
|
||||
struct regmap_irq_chip_data *irq_data;
|
||||
struct regmap *regmap;
|
||||
};
|
||||
#endif /* __LINUX_REGULATOR_rk808_H */
|
||||
Loading…
Reference in New Issue