[linux.git] / drivers / mfd / rk808.c

/*
 * MFD core driver for Rockchip RK808/RK818
 *
 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
 *
 * Author: Chris Zhong <[email protected]>
 * Author: Zhang Qing <[email protected]>
 *
 * Copyright (C) 2016 PHYTEC Messtechnik GmbH
 *
 * Author: Wadim Egorov <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/rk808.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>

struct rk808_reg_data {
	int addr;
	int mask;
	int value;
};

static bool rk808_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_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:
		return true;
	}

	return false;
}

static const struct regmap_config rk818_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK818_USB_CTRL_REG,
	.cache_type = REGCACHE_RBTREE,
	.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 const struct regmap_config rk808_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK808_IO_POL_REG,
	.cache_type = REGCACHE_RBTREE,
	.volatile_reg = rk808_is_volatile_reg,
};

static struct resource rtc_resources[] = {
	{
		.start  = RK808_IRQ_RTC_ALARM,
		.end    = RK808_IRQ_RTC_ALARM,
		.flags  = IORESOURCE_IRQ,
	}
};

static struct resource rk805_key_resources[] = {
	{
		.start  = RK805_IRQ_PWRON_FALL,
		.end    = RK805_IRQ_PWRON_FALL,
		.flags  = IORESOURCE_IRQ,
	},
	{
		.start  = RK805_IRQ_PWRON_RISE,
		.end    = RK805_IRQ_PWRON_RISE,
		.flags  = IORESOURCE_IRQ,
	}
};

static const struct mfd_cell rk805s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{ .name = "rk805-pinctrl", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = &rtc_resources[0],
	},
	{	.name = "rk805-pwrkey",
		.num_resources = ARRAY_SIZE(rk805_key_resources),
		.resources = &rk805_key_resources[0],
	},
};

static const struct mfd_cell rk808s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = rtc_resources,
	},
};

static const struct mfd_cell rk818s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = rtc_resources,
	},
};

static const struct rk808_reg_data rk805_pre_init_reg[] = {
	{RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
				 RK805_BUCK1_2_ILMAX_4000MA},
	{RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
				 RK805_BUCK1_2_ILMAX_4000MA},
	{RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
				 RK805_BUCK3_ILMAX_3000MA},
	{RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
				 RK805_BUCK4_ILMAX_3500MA},
	{RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
	{RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
	{RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
};

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_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
						    VB_LO_SEL_3500MV },
};

static const struct rk808_reg_data rk818_pre_init_reg[] = {
	/* improve efficiency */
	{ RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_250MA },
	{ RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
	{ RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
	{ RK818_USB_CTRL_REG,	  RK818_USB_ILIM_SEL_MASK,
						    RK818_USB_ILMIN_2000MA },
	/* close charger when usb lower then 3.4V */
	{ RK818_USB_CTRL_REG,	  RK818_USB_CHG_SD_VSEL_MASK,
						    (0x7 << 4) },
	/* no action when vref */
	{ RK818_H5V_EN_REG,	  BIT(1),	    RK818_REF_RDY_CTRL },
	/* enable HDMI 5V */
	{ RK818_H5V_EN_REG,	  BIT(0),	    RK818_H5V_EN },
	{ RK808_VB_MON_REG,	  MASK_ALL,	    VB_LO_ACT |
						    VB_LO_SEL_3500MV },
};

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 const struct regmap_irq rk808_irqs[] = {
	/* INT_STS */
	[RK808_IRQ_VOUT_LO] = {
		.mask = RK808_IRQ_VOUT_LO_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_VB_LO] = {
		.mask = RK808_IRQ_VB_LO_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_PWRON] = {
		.mask = RK808_IRQ_PWRON_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_PWRON_LP] = {
		.mask = RK808_IRQ_PWRON_LP_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_HOTDIE] = {
		.mask = RK808_IRQ_HOTDIE_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_RTC_ALARM] = {
		.mask = RK808_IRQ_RTC_ALARM_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_RTC_PERIOD] = {
		.mask = RK808_IRQ_RTC_PERIOD_MSK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[RK808_IRQ_PLUG_IN_INT] = {
		.mask = RK808_IRQ_PLUG_IN_INT_MSK,
		.reg_offset = 1,
	},
	[RK808_IRQ_PLUG_OUT_INT] = {
		.mask = RK808_IRQ_PLUG_OUT_INT_MSK,
		.reg_offset = 1,
	},
};

static const struct regmap_irq rk818_irqs[] = {
	/* INT_STS */
	[RK818_IRQ_VOUT_LO] = {
		.mask = RK818_IRQ_VOUT_LO_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_VB_LO] = {
		.mask = RK818_IRQ_VB_LO_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_PWRON] = {
		.mask = RK818_IRQ_PWRON_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_PWRON_LP] = {
		.mask = RK818_IRQ_PWRON_LP_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_HOTDIE] = {
		.mask = RK818_IRQ_HOTDIE_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_RTC_ALARM] = {
		.mask = RK818_IRQ_RTC_ALARM_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_RTC_PERIOD] = {
		.mask = RK818_IRQ_RTC_PERIOD_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_USB_OV] = {
		.mask = RK818_IRQ_USB_OV_MSK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[RK818_IRQ_PLUG_IN] = {
		.mask = RK818_IRQ_PLUG_IN_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_PLUG_OUT] = {
		.mask = RK818_IRQ_PLUG_OUT_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_OK] = {
		.mask = RK818_IRQ_CHG_OK_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_TE] = {
		.mask = RK818_IRQ_CHG_TE_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_TS1] = {
		.mask = RK818_IRQ_CHG_TS1_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_TS2] = {
		.mask = RK818_IRQ_TS2_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_CVTLIM] = {
		.mask = RK818_IRQ_CHG_CVTLIM_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_DISCHG_ILIM] = {
		.mask = RK818_IRQ_DISCHG_ILIM_MSK,
		.reg_offset = 1,
	},
};

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 regmap_irq_chip rk808_irq_chip = {
	.name = "rk808",
	.irqs = rk808_irqs,
	.num_irqs = ARRAY_SIZE(rk808_irqs),
	.num_regs = 2,
	.irq_reg_stride = 2,
	.status_base = RK808_INT_STS_REG1,
	.mask_base = RK808_INT_STS_MSK_REG1,
	.ack_base = RK808_INT_STS_REG1,
	.init_ack_masked = true,
};

static const struct regmap_irq_chip rk818_irq_chip = {
	.name = "rk818",
	.irqs = rk818_irqs,
	.num_irqs = ARRAY_SIZE(rk818_irqs),
	.num_regs = 2,
	.irq_reg_stride = 2,
	.status_base = RK818_INT_STS_REG1,
	.mask_base = RK818_INT_STS_MSK_REG1,
	.ack_base = RK818_INT_STS_REG1,
	.init_ack_masked = true,
};

static struct i2c_client *rk808_i2c_client;

static void rk805_device_shutdown(void)
{
	int ret;
	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);

	if (!rk808) {
		dev_warn(&rk808_i2c_client->dev,
			 "have no rk805, so do nothing here\n");
		return;
	}

	ret = regmap_update_bits(rk808->regmap,
				 RK805_DEV_CTRL_REG,
				 DEV_OFF, DEV_OFF);
	if (ret)
		dev_err(&rk808_i2c_client->dev, "power off error!\n");
}

static void rk808_device_shutdown(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;
	}

	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");
}

static void rk818_device_shutdown(void)
{
	int ret;
	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);

	if (!rk808) {
		dev_warn(&rk808_i2c_client->dev,
			 "have no rk818, so do nothing here\n");
		return;
	}

	ret = regmap_update_bits(rk808->regmap,
				 RK818_DEVCTRL_REG,
				 DEV_OFF, DEV_OFF);
	if (ret)
		dev_err(&rk808_i2c_client->dev, "power off error!\n");
}

static const struct of_device_id rk808_of_match[] = {
	{ .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)
{
	struct device_node *np = client->dev.of_node;
	struct rk808 *rk808;
	const struct rk808_reg_data *pre_init_reg;
	const struct mfd_cell *cells;
	void (*pm_pwroff_fn)(void);
	int nr_pre_init_regs;
	int nr_cells;
	int pm_off = 0, msb, lsb;
	int ret;
	int i;

	rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
	if (!rk808)
		return -ENOMEM;

	/* 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, "chip id: 0x%x\n", (unsigned int)rk808->variant);

	switch (rk808->variant) {
	case RK805_ID:
		rk808->regmap_cfg = &rk805_regmap_config;
		rk808->regmap_irq_chip = &rk805_irq_chip;
		pre_init_reg = rk805_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
		cells = rk805s;
		nr_cells = ARRAY_SIZE(rk805s);
		pm_pwroff_fn = rk805_device_shutdown;
		break;
	case RK808_ID:
		rk808->regmap_cfg = &rk808_regmap_config;
		rk808->regmap_irq_chip = &rk808_irq_chip;
		pre_init_reg = rk808_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
		cells = rk808s;
		nr_cells = ARRAY_SIZE(rk808s);
		pm_pwroff_fn = rk808_device_shutdown;
		break;
	case RK818_ID:
		rk808->regmap_cfg = &rk818_regmap_config;
		rk808->regmap_irq_chip = &rk818_irq_chip;
		pre_init_reg = rk818_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
		cells = rk818s;
		nr_cells = ARRAY_SIZE(rk818s);
		pm_pwroff_fn = rk818_device_shutdown;
		break;
	default:
		dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
			rk808->variant);
		return -EINVAL;
	}

	rk808->i2c = client;
	i2c_set_clientdata(client, rk808);

	rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
	if (IS_ERR(rk808->regmap)) {
		dev_err(&client->dev, "regmap initialization failed\n");
		return PTR_ERR(rk808->regmap);
	}

	if (!client->irq) {
		dev_err(&client->dev, "No interrupt support, no core IRQ\n");
		return -EINVAL;
	}

	ret = regmap_add_irq_chip(rk808->regmap, client->irq,
				  IRQF_ONESHOT, -1,
				  rk808->regmap_irq_chip, &rk808->irq_data);
	if (ret) {
		dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
		return ret;
	}

	for (i = 0; i < nr_pre_init_regs; i++) {
		ret = regmap_update_bits(rk808->regmap,
					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",
				pre_init_reg[i].addr);
			return ret;
		}
	}

	ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
			      cells, nr_cells, NULL, 0,
			      regmap_irq_get_domain(rk808->irq_data));
	if (ret) {
		dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
		goto err_irq;
	}

	pm_off = of_property_read_bool(np,
				"rockchip,system-power-controller");
	if (pm_off && !pm_power_off) {
		rk808_i2c_client = client;
		pm_power_off = pm_pwroff_fn;
	}

	return 0;

err_irq:
	regmap_del_irq_chip(client->irq, rk808->irq_data);
	return ret;
}

static int rk808_remove(struct i2c_client *client)
{
	struct rk808 *rk808 = i2c_get_clientdata(client);

	regmap_del_irq_chip(client->irq, rk808->irq_data);
	pm_power_off = NULL;

	return 0;
}

static const struct i2c_device_id rk808_ids[] = {
	{ "rk805" },
	{ "rk808" },
	{ "rk818" },
	{ },
};
MODULE_DEVICE_TABLE(i2c, rk808_ids);

static struct i2c_driver rk808_i2c_driver = {
	.driver = {
		.name = "rk808",
		.of_match_table = rk808_of_match,
	},
	.probe    = rk808_probe,
	.remove   = rk808_remove,
	.id_table = rk808_ids,
};

module_i2c_driver(rk808_i2c_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Chris Zhong <[email protected]>");
MODULE_AUTHOR("Zhang Qing <[email protected]>");
MODULE_AUTHOR("Wadim Egorov <[email protected]>");
MODULE_DESCRIPTION("RK808/RK818 PMIC driver");
Commit	Line	Data
f69a7cf7	1	/*
2eedcbfc	2	* MFD core driver for Rockchip RK808/RK818
f69a7cf7 CZ	3	*
	4	* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
	5	*
	6	* Author: Chris Zhong <[email protected]>
	7	* Author: Zhang Qing <[email protected]>
	8	*
2eedcbfc WE	9	* Copyright (C) 2016 PHYTEC Messtechnik GmbH
	10	*
	11	* Author: Wadim Egorov <[email protected]>
	12	*
f69a7cf7 CZ	13	* This program is free software; you can redistribute it and/or modify it
	14	* under the terms and conditions of the GNU General Public License,
	15	* version 2, as published by the Free Software Foundation.
	16	*
	17	* This program is distributed in the hope it will be useful, but WITHOUT
	18	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	19	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	20	* more details.
	21	*/
	22
	23	#include <linux/i2c.h>
	24	#include <linux/interrupt.h>
	25	#include <linux/mfd/rk808.h>
	26	#include <linux/mfd/core.h>
	27	#include <linux/module.h>
2eedcbfc	28	#include <linux/of_device.h>
f69a7cf7 CZ	29	#include <linux/regmap.h>
	30
	31	struct rk808_reg_data {
	32	int addr;
	33	int mask;
	34	int value;
	35	};
	36
2adb3b8e DA	37	static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
	38	{
	39	/*
	40	* Notes:
	41	* - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
	42	* we don't use that feature. It's better to cache.
	43	* - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
	44	* bits are cleared in case when we shutoff anyway, but better safe.
	45	*/
	46
	47	switch (reg) {
	48	case RK808_SECONDS_REG ... RK808_WEEKS_REG:
	49	case RK808_RTC_STATUS_REG:
	50	case RK808_VB_MON_REG:
	51	case RK808_THERMAL_REG:
	52	case RK808_DCDC_UV_STS_REG:
	53	case RK808_LDO_UV_STS_REG:
	54	case RK808_DCDC_PG_REG:
	55	case RK808_LDO_PG_REG:
	56	case RK808_DEVCTRL_REG:
	57	case RK808_INT_STS_REG1:
	58	case RK808_INT_STS_REG2:
	59	return true;
	60	}
	61
	62	return false;
	63	}
	64
2eedcbfc WE	65	static const struct regmap_config rk818_regmap_config = {
	66	.reg_bits = 8,
	67	.val_bits = 8,
	68	.max_register = RK818_USB_CTRL_REG,
	69	.cache_type = REGCACHE_RBTREE,
	70	.volatile_reg = rk808_is_volatile_reg,
	71	};
	72
990f05f6 EZ	73	static const struct regmap_config rk805_regmap_config = {
	74	.reg_bits = 8,
	75	.val_bits = 8,
	76	.max_register = RK805_OFF_SOURCE_REG,
	77	.cache_type = REGCACHE_RBTREE,
	78	.volatile_reg = rk808_is_volatile_reg,
	79	};
	80
f69a7cf7 CZ	81	static const struct regmap_config rk808_regmap_config = {
	82	.reg_bits = 8,
	83	.val_bits = 8,
	84	.max_register = RK808_IO_POL_REG,
2adb3b8e DA	85	.cache_type = REGCACHE_RBTREE,
2adb3b8e DA	86	.volatile_reg = rk808_is_volatile_reg,
f69a7cf7 CZ	87	};
	88
	89	static struct resource rtc_resources[] = {
	90	{
	91	.start = RK808_IRQ_RTC_ALARM,
	92	.end = RK808_IRQ_RTC_ALARM,
	93	.flags = IORESOURCE_IRQ,
	94	}
	95	};
	96
f7c22398 JC	97	static struct resource rk805_key_resources[] = {
	98	{
	99	.start = RK805_IRQ_PWRON_FALL,
	100	.end = RK805_IRQ_PWRON_FALL,
	101	.flags = IORESOURCE_IRQ,
	102	},
	103	{
	104	.start = RK805_IRQ_PWRON_RISE,
	105	.end = RK805_IRQ_PWRON_RISE,
	106	.flags = IORESOURCE_IRQ,
	107	}
	108	};
	109
990f05f6 EZ	110	static const struct mfd_cell rk805s[] = {
	111	{ .name = "rk808-clkout", },
	112	{ .name = "rk808-regulator", },
8d249b67	113	{ .name = "rk805-pinctrl", },
990f05f6 EZ	114	{
	115	.name = "rk808-rtc",
	116	.num_resources = ARRAY_SIZE(rtc_resources),
	117	.resources = &rtc_resources[0],
	118	},
f7c22398 JC	119	{ .name = "rk805-pwrkey",
	120	.num_resources = ARRAY_SIZE(rk805_key_resources),
	121	.resources = &rk805_key_resources[0],
	122	},
990f05f6 EZ	123	};
990f05f6 EZ	124
f69a7cf7 CZ	125	static const struct mfd_cell rk808s[] = {
	126	{ .name = "rk808-clkout", },
	127	{ .name = "rk808-regulator", },
	128	{
	129	.name = "rk808-rtc",
	130	.num_resources = ARRAY_SIZE(rtc_resources),
2eedcbfc	131	.resources = rtc_resources,
f69a7cf7 CZ	132	},
	133	};
	134
2eedcbfc WE	135	static const struct mfd_cell rk818s[] = {
	136	{ .name = "rk808-clkout", },
	137	{ .name = "rk808-regulator", },
	138	{
	139	.name = "rk808-rtc",
	140	.num_resources = ARRAY_SIZE(rtc_resources),
	141	.resources = rtc_resources,
	142	},
	143	};
	144
990f05f6 EZ	145	static const struct rk808_reg_data rk805_pre_init_reg[] = {
	146	{RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
	147	RK805_BUCK1_2_ILMAX_4000MA},
	148	{RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
	149	RK805_BUCK1_2_ILMAX_4000MA},
	150	{RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
	151	RK805_BUCK3_ILMAX_3000MA},
	152	{RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
	153	RK805_BUCK4_ILMAX_3500MA},
	154	{RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
	155	{RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
	156	{RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
	157	};
	158
2eedcbfc	159	static const struct rk808_reg_data rk808_pre_init_reg[] = {
f69a7cf7 CZ	160	{ RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA },
	161	{ RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA },
	162	{ RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
	163	{ RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA },
	164	{ RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA },
e19f7428	165	{ RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
f69a7cf7 CZ	166	{ RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT \|
	167	VB_LO_SEL_3500MV },
	168	};
	169
2eedcbfc WE	170	static const struct rk808_reg_data rk818_pre_init_reg[] = {
	171	/* improve efficiency */
	172	{ RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA },
	173	{ RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA },
	174	{ RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
	175	{ RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK,
	176	RK818_USB_ILMIN_2000MA },
	177	/* close charger when usb lower then 3.4V */
	178	{ RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK,
	179	(0x7 << 4) },
	180	/* no action when vref */
	181	{ RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL },
	182	/* enable HDMI 5V */
	183	{ RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN },
	184	{ RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT \|
	185	VB_LO_SEL_3500MV },
	186	};
	187
990f05f6 EZ	188	static const struct regmap_irq rk805_irqs[] = {
	189	[RK805_IRQ_PWRON_RISE] = {
	190	.mask = RK805_IRQ_PWRON_RISE_MSK,
	191	.reg_offset = 0,
	192	},
	193	[RK805_IRQ_VB_LOW] = {
	194	.mask = RK805_IRQ_VB_LOW_MSK,
	195	.reg_offset = 0,
	196	},
	197	[RK805_IRQ_PWRON] = {
	198	.mask = RK805_IRQ_PWRON_MSK,
	199	.reg_offset = 0,
	200	},
	201	[RK805_IRQ_PWRON_LP] = {
	202	.mask = RK805_IRQ_PWRON_LP_MSK,
	203	.reg_offset = 0,
	204	},
	205	[RK805_IRQ_HOTDIE] = {
	206	.mask = RK805_IRQ_HOTDIE_MSK,
	207	.reg_offset = 0,
	208	},
	209	[RK805_IRQ_RTC_ALARM] = {
	210	.mask = RK805_IRQ_RTC_ALARM_MSK,
	211	.reg_offset = 0,
	212	},
	213	[RK805_IRQ_RTC_PERIOD] = {
	214	.mask = RK805_IRQ_RTC_PERIOD_MSK,
	215	.reg_offset = 0,
	216	},
	217	[RK805_IRQ_PWRON_FALL] = {
	218	.mask = RK805_IRQ_PWRON_FALL_MSK,
	219	.reg_offset = 0,
	220	},
	221	};
	222
f69a7cf7 CZ	223	static const struct regmap_irq rk808_irqs[] = {
	224	/* INT_STS */
	225	[RK808_IRQ_VOUT_LO] = {
	226	.mask = RK808_IRQ_VOUT_LO_MSK,
	227	.reg_offset = 0,
	228	},
	229	[RK808_IRQ_VB_LO] = {
	230	.mask = RK808_IRQ_VB_LO_MSK,
	231	.reg_offset = 0,
	232	},
	233	[RK808_IRQ_PWRON] = {
	234	.mask = RK808_IRQ_PWRON_MSK,
	235	.reg_offset = 0,
	236	},
	237	[RK808_IRQ_PWRON_LP] = {
	238	.mask = RK808_IRQ_PWRON_LP_MSK,
	239	.reg_offset = 0,
	240	},
	241	[RK808_IRQ_HOTDIE] = {
	242	.mask = RK808_IRQ_HOTDIE_MSK,
	243	.reg_offset = 0,
	244	},
	245	[RK808_IRQ_RTC_ALARM] = {
	246	.mask = RK808_IRQ_RTC_ALARM_MSK,
	247	.reg_offset = 0,
	248	},
	249	[RK808_IRQ_RTC_PERIOD] = {
	250	.mask = RK808_IRQ_RTC_PERIOD_MSK,
	251	.reg_offset = 0,
	252	},
	253
	254	/* INT_STS2 */
	255	[RK808_IRQ_PLUG_IN_INT] = {
	256	.mask = RK808_IRQ_PLUG_IN_INT_MSK,
	257	.reg_offset = 1,
	258	},
	259	[RK808_IRQ_PLUG_OUT_INT] = {
	260	.mask = RK808_IRQ_PLUG_OUT_INT_MSK,
	261	.reg_offset = 1,
	262	},
	263	};
	264
2eedcbfc WE	265	static const struct regmap_irq rk818_irqs[] = {
	266	/* INT_STS */
	267	[RK818_IRQ_VOUT_LO] = {
	268	.mask = RK818_IRQ_VOUT_LO_MSK,
	269	.reg_offset = 0,
	270	},
	271	[RK818_IRQ_VB_LO] = {
	272	.mask = RK818_IRQ_VB_LO_MSK,
	273	.reg_offset = 0,
	274	},
	275	[RK818_IRQ_PWRON] = {
	276	.mask = RK818_IRQ_PWRON_MSK,
	277	.reg_offset = 0,
	278	},
	279	[RK818_IRQ_PWRON_LP] = {
	280	.mask = RK818_IRQ_PWRON_LP_MSK,
	281	.reg_offset = 0,
	282	},
	283	[RK818_IRQ_HOTDIE] = {
	284	.mask = RK818_IRQ_HOTDIE_MSK,
	285	.reg_offset = 0,
	286	},
	287	[RK818_IRQ_RTC_ALARM] = {
	288	.mask = RK818_IRQ_RTC_ALARM_MSK,
	289	.reg_offset = 0,
	290	},
	291	[RK818_IRQ_RTC_PERIOD] = {
	292	.mask = RK818_IRQ_RTC_PERIOD_MSK,
	293	.reg_offset = 0,
	294	},
	295	[RK818_IRQ_USB_OV] = {
	296	.mask = RK818_IRQ_USB_OV_MSK,
	297	.reg_offset = 0,
	298	},
	299
	300	/* INT_STS2 */
	301	[RK818_IRQ_PLUG_IN] = {
	302	.mask = RK818_IRQ_PLUG_IN_MSK,
	303	.reg_offset = 1,
	304	},
	305	[RK818_IRQ_PLUG_OUT] = {
	306	.mask = RK818_IRQ_PLUG_OUT_MSK,
	307	.reg_offset = 1,
	308	},
	309	[RK818_IRQ_CHG_OK] = {
	310	.mask = RK818_IRQ_CHG_OK_MSK,
	311	.reg_offset = 1,
	312	},
	313	[RK818_IRQ_CHG_TE] = {
	314	.mask = RK818_IRQ_CHG_TE_MSK,
	315	.reg_offset = 1,
	316	},
	317	[RK818_IRQ_CHG_TS1] = {
	318	.mask = RK818_IRQ_CHG_TS1_MSK,
	319	.reg_offset = 1,
	320	},
	321	[RK818_IRQ_TS2] = {
	322	.mask = RK818_IRQ_TS2_MSK,
	323	.reg_offset = 1,
	324	},
	325	[RK818_IRQ_CHG_CVTLIM] = {
	326	.mask = RK818_IRQ_CHG_CVTLIM_MSK,
	327	.reg_offset = 1,
	328	},
329	[RK818_IRQ_DISCHG_ILIM] = {
330	.mask = RK818_IRQ_DISCHG_ILIM_MSK,
331	.reg_offset = 1,
332	},
333	};
334
990f05f6 EZ	335	static struct regmap_irq_chip rk805_irq_chip = {
	336	.name = "rk805",
	337	.irqs = rk805_irqs,
	338	.num_irqs = ARRAY_SIZE(rk805_irqs),
	339	.num_regs = 1,
	340	.status_base = RK805_INT_STS_REG,
	341	.mask_base = RK805_INT_STS_MSK_REG,
	342	.ack_base = RK805_INT_STS_REG,
	343	.init_ack_masked = true,
	344	};
	345
24e34b9d	346	static const struct regmap_irq_chip rk808_irq_chip = {
f69a7cf7 CZ	347	.name = "rk808",
	348	.irqs = rk808_irqs,
	349	.num_irqs = ARRAY_SIZE(rk808_irqs),
	350	.num_regs = 2,
	351	.irq_reg_stride = 2,
	352	.status_base = RK808_INT_STS_REG1,
	353	.mask_base = RK808_INT_STS_MSK_REG1,
	354	.ack_base = RK808_INT_STS_REG1,
	355	.init_ack_masked = true,
	356	};
	357
24e34b9d	358	static const struct regmap_irq_chip rk818_irq_chip = {
2eedcbfc WE	359	.name = "rk818",
	360	.irqs = rk818_irqs,
	361	.num_irqs = ARRAY_SIZE(rk818_irqs),
	362	.num_regs = 2,
	363	.irq_reg_stride = 2,
	364	.status_base = RK818_INT_STS_REG1,
	365	.mask_base = RK818_INT_STS_MSK_REG1,
	366	.ack_base = RK818_INT_STS_REG1,
	367	.init_ack_masked = true,
	368	};
	369
f69a7cf7	370	static struct i2c_client *rk808_i2c_client;
990f05f6 EZ	371
	372	static void rk805_device_shutdown(void)
	373	{
	374	int ret;
	375	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
	376
	377	if (!rk808) {
	378	dev_warn(&rk808_i2c_client->dev,
	379	"have no rk805, so do nothing here\n");
	380	return;
	381	}
	382
	383	ret = regmap_update_bits(rk808->regmap,
	384	RK805_DEV_CTRL_REG,
	385	DEV_OFF, DEV_OFF);
	386	if (ret)
	387	dev_err(&rk808_i2c_client->dev, "power off error!\n");
	388	}
	389
f69a7cf7 CZ	390	static void rk808_device_shutdown(void)
	391	{
	392	int ret;
	393	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
	394
	395	if (!rk808) {
	396	dev_warn(&rk808_i2c_client->dev,
	397	"have no rk808, so do nothing here\n");
	398	return;
	399	}
	400
	401	ret = regmap_update_bits(rk808->regmap,
	402	RK808_DEVCTRL_REG,
	403	DEV_OFF_RST, DEV_OFF_RST);
	404	if (ret)
	405	dev_err(&rk808_i2c_client->dev, "power off error!\n");
	406	}
	407
b2e2c850 JC	408	static void rk818_device_shutdown(void)
	409	{
	410	int ret;
	411	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
	412
	413	if (!rk808) {
	414	dev_warn(&rk808_i2c_client->dev,
	415	"have no rk818, so do nothing here\n");
	416	return;
	417	}
	418
	419	ret = regmap_update_bits(rk808->regmap,
	420	RK818_DEVCTRL_REG,
	421	DEV_OFF, DEV_OFF);
	422	if (ret)
	423	dev_err(&rk808_i2c_client->dev, "power off error!\n");
	424	}
	425
2eedcbfc	426	static const struct of_device_id rk808_of_match[] = {
990f05f6	427	{ .compatible = "rockchip,rk805" },
2eedcbfc WE	428	{ .compatible = "rockchip,rk808" },
	429	{ .compatible = "rockchip,rk818" },
	430	{ },
	431	};
	432	MODULE_DEVICE_TABLE(of, rk808_of_match);
	433
f69a7cf7 CZ	434	static int rk808_probe(struct i2c_client *client,
	435	const struct i2c_device_id *id)
	436	{
	437	struct device_node *np = client->dev.of_node;
	438	struct rk808 *rk808;
2eedcbfc WE	439	const struct rk808_reg_data *pre_init_reg;
2eedcbfc WE	440	const struct mfd_cell *cells;
b2e2c850	441	void (*pm_pwroff_fn)(void);
2eedcbfc WE	442	int nr_pre_init_regs;
2eedcbfc WE	443	int nr_cells;
9d6105e1	444	int pm_off = 0, msb, lsb;
f69a7cf7 CZ	445	int ret;
	446	int i;
	447
f69a7cf7 CZ	448	rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
	449	if (!rk808)
	450	return -ENOMEM;
	451
9d6105e1 EZ	452	/* Read chip variant */
	453	msb = i2c_smbus_read_byte_data(client, RK808_ID_MSB);
	454	if (msb < 0) {
	455	dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
2eedcbfc	456	RK808_ID_MSB);
9d6105e1	457	return msb;
2eedcbfc WE	458	}
2eedcbfc WE	459
9d6105e1 EZ	460	lsb = i2c_smbus_read_byte_data(client, RK808_ID_LSB);
	461	if (lsb < 0) {
	462	dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
	463	RK808_ID_LSB);
	464	return lsb;
	465	}
	466
	467	rk808->variant = ((msb << 8) \| lsb) & RK8XX_ID_MSK;
	468	dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
2eedcbfc WE	469
2eedcbfc WE	470	switch (rk808->variant) {
990f05f6 EZ	471	case RK805_ID:
	472	rk808->regmap_cfg = &rk805_regmap_config;
	473	rk808->regmap_irq_chip = &rk805_irq_chip;
	474	pre_init_reg = rk805_pre_init_reg;
	475	nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
	476	cells = rk805s;
	477	nr_cells = ARRAY_SIZE(rk805s);
	478	pm_pwroff_fn = rk805_device_shutdown;
	479	break;
2eedcbfc WE	480	case RK808_ID:
	481	rk808->regmap_cfg = &rk808_regmap_config;
	482	rk808->regmap_irq_chip = &rk808_irq_chip;
	483	pre_init_reg = rk808_pre_init_reg;
	484	nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
	485	cells = rk808s;
	486	nr_cells = ARRAY_SIZE(rk808s);
b2e2c850	487	pm_pwroff_fn = rk808_device_shutdown;
2eedcbfc WE	488	break;
	489	case RK818_ID:
	490	rk808->regmap_cfg = &rk818_regmap_config;
	491	rk808->regmap_irq_chip = &rk818_irq_chip;
	492	pre_init_reg = rk818_pre_init_reg;
	493	nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
	494	cells = rk818s;
	495	nr_cells = ARRAY_SIZE(rk818s);
b2e2c850	496	pm_pwroff_fn = rk818_device_shutdown;
2eedcbfc WE	497	break;
	498	default:
	499	dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
	500	rk808->variant);
	501	return -EINVAL;
	502	}
	503
	504	rk808->i2c = client;
	505	i2c_set_clientdata(client, rk808);
	506
	507	rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
f69a7cf7 CZ	508	if (IS_ERR(rk808->regmap)) {
	509	dev_err(&client->dev, "regmap initialization failed\n");
	510	return PTR_ERR(rk808->regmap);
	511	}
	512
2eedcbfc WE	513	if (!client->irq) {
	514	dev_err(&client->dev, "No interrupt support, no core IRQ\n");
	515	return -EINVAL;
f69a7cf7 CZ	516	}
	517
	518	ret = regmap_add_irq_chip(rk808->regmap, client->irq,
	519	IRQF_ONESHOT, -1,
2eedcbfc	520	rk808->regmap_irq_chip, &rk808->irq_data);
f69a7cf7 CZ	521	if (ret) {
	522	dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
	523	return ret;
	524	}
	525
2eedcbfc WE	526	for (i = 0; i < nr_pre_init_regs; i++) {
	527	ret = regmap_update_bits(rk808->regmap,
	528	pre_init_reg[i].addr,
	529	pre_init_reg[i].mask,
	530	pre_init_reg[i].value);
	531	if (ret) {
	532	dev_err(&client->dev,
	533	"0x%x write err\n",
	534	pre_init_reg[i].addr);
	535	return ret;
	536	}
	537	}
f69a7cf7	538
2eedcbfc WE	539	ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
	540	cells, nr_cells, NULL, 0,
	541	regmap_irq_get_domain(rk808->irq_data));
f69a7cf7 CZ	542	if (ret) {
	543	dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
	544	goto err_irq;
	545	}
	546
	547	pm_off = of_property_read_bool(np,
	548	"rockchip,system-power-controller");
	549	if (pm_off && !pm_power_off) {
	550	rk808_i2c_client = client;
b2e2c850	551	pm_power_off = pm_pwroff_fn;
f69a7cf7 CZ	552	}
	553
	554	return 0;
	555
	556	err_irq:
	557	regmap_del_irq_chip(client->irq, rk808->irq_data);
	558	return ret;
	559	}
	560
	561	static int rk808_remove(struct i2c_client *client)
	562	{
	563	struct rk808 *rk808 = i2c_get_clientdata(client);
	564
	565	regmap_del_irq_chip(client->irq, rk808->irq_data);
f69a7cf7 CZ	566	pm_power_off = NULL;
	567
	568	return 0;
	569	}
	570
f69a7cf7	571	static const struct i2c_device_id rk808_ids[] = {
990f05f6	572	{ "rk805" },
f69a7cf7	573	{ "rk808" },
2eedcbfc	574	{ "rk818" },
f69a7cf7 CZ	575	{ },
	576	};
	577	MODULE_DEVICE_TABLE(i2c, rk808_ids);
	578
	579	static struct i2c_driver rk808_i2c_driver = {
	580	.driver = {
	581	.name = "rk808",
	582	.of_match_table = rk808_of_match,
	583	},
	584	.probe = rk808_probe,
	585	.remove = rk808_remove,
	586	.id_table = rk808_ids,
	587	};
	588
	589	module_i2c_driver(rk808_i2c_driver);
	590
	591	MODULE_LICENSE("GPL");
	592	MODULE_AUTHOR("Chris Zhong <[email protected]>");
	593	MODULE_AUTHOR("Zhang Qing <[email protected]>");
2eedcbfc WE	594	MODULE_AUTHOR("Wadim Egorov <[email protected]>");
2eedcbfc WE	595	MODULE_DESCRIPTION("RK808/RK818 PMIC driver");