mfd: tps80031: Remove driver

Driver was upstreamed in 2013 and never got a user, remove it.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211021192258.21968-4-digetx@gmail.com

1 files changed, 0 insertions, 526 deletions

diff --git a/drivers/mfd/tps80031.c b/drivers/mfd/tps80031.c
deleted file mode 100644
index 3c4e62c3406a..000000000000
--- a/drivers/mfd/tps80031.c
+++ /dev/null
@@ -1,526 +0,0 @@
-/*
- * tps80031.c -- TI TPS80031/TPS80032 mfd core driver.
- *
- * MFD core driver for TI TPS80031/TPS80032 Fully Integrated
- * Power Management with Power Path and Battery Charger
- *
- * Copyright (c) 2012, NVIDIA Corporation.
- *
- * Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
- * whether express or implied; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
- */
-
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/tps80031.h>
-#include <linux/pm.h>
-#include <linux/regmap.h>
-#include <linux/slab.h>
-
-static const struct resource tps80031_rtc_resources[] = {
-	DEFINE_RES_IRQ(TPS80031_INT_RTC_ALARM),
-};
-
-/* TPS80031 sub mfd devices */
-static const struct mfd_cell tps80031_cell[] = {
-	{
-		.name = "tps80031-pmic",
-	},
-	{
-		.name = "tps80031-clock",
-	},
-	{
-		.name = "tps80031-rtc",
-		.num_resources = ARRAY_SIZE(tps80031_rtc_resources),
-		.resources = tps80031_rtc_resources,
-	},
-	{
-		.name = "tps80031-gpadc",
-	},
-	{
-		.name = "tps80031-fuel-gauge",
-	},
-	{
-		.name = "tps80031-charger",
-	},
-};
-
-static int tps80031_slave_address[TPS80031_NUM_SLAVES] = {
-	TPS80031_I2C_ID0_ADDR,
-	TPS80031_I2C_ID1_ADDR,
-	TPS80031_I2C_ID2_ADDR,
-	TPS80031_I2C_ID3_ADDR,
-};
-
-struct tps80031_pupd_data {
-	u8	reg;
-	u8	pullup_bit;
-	u8	pulldown_bit;
-};
-
-#define TPS80031_IRQ(_reg, _mask)			\
-	{							\
-		.reg_offset = (TPS80031_INT_MSK_LINE_##_reg) -	\
-				TPS80031_INT_MSK_LINE_A,	\
-		.mask = BIT(_mask),				\
-	}
-
-static const struct regmap_irq tps80031_main_irqs[] = {
-	[TPS80031_INT_PWRON]		= TPS80031_IRQ(A, 0),
-	[TPS80031_INT_RPWRON]		= TPS80031_IRQ(A, 1),
-	[TPS80031_INT_SYS_VLOW]		= TPS80031_IRQ(A, 2),
-	[TPS80031_INT_RTC_ALARM]	= TPS80031_IRQ(A, 3),
-	[TPS80031_INT_RTC_PERIOD]	= TPS80031_IRQ(A, 4),
-	[TPS80031_INT_HOT_DIE]		= TPS80031_IRQ(A, 5),
-	[TPS80031_INT_VXX_SHORT]	= TPS80031_IRQ(A, 6),
-	[TPS80031_INT_SPDURATION]	= TPS80031_IRQ(A, 7),
-	[TPS80031_INT_WATCHDOG]		= TPS80031_IRQ(B, 0),
-	[TPS80031_INT_BAT]		= TPS80031_IRQ(B, 1),
-	[TPS80031_INT_SIM]		= TPS80031_IRQ(B, 2),
-	[TPS80031_INT_MMC]		= TPS80031_IRQ(B, 3),
-	[TPS80031_INT_RES]		= TPS80031_IRQ(B, 4),
-	[TPS80031_INT_GPADC_RT]		= TPS80031_IRQ(B, 5),
-	[TPS80031_INT_GPADC_SW2_EOC]	= TPS80031_IRQ(B, 6),
-	[TPS80031_INT_CC_AUTOCAL]	= TPS80031_IRQ(B, 7),
-	[TPS80031_INT_ID_WKUP]		= TPS80031_IRQ(C, 0),
-	[TPS80031_INT_VBUSS_WKUP]	= TPS80031_IRQ(C, 1),
-	[TPS80031_INT_ID]		= TPS80031_IRQ(C, 2),
-	[TPS80031_INT_VBUS]		= TPS80031_IRQ(C, 3),
-	[TPS80031_INT_CHRG_CTRL]	= TPS80031_IRQ(C, 4),
-	[TPS80031_INT_EXT_CHRG]		= TPS80031_IRQ(C, 5),
-	[TPS80031_INT_INT_CHRG]		= TPS80031_IRQ(C, 6),
-	[TPS80031_INT_RES2]		= TPS80031_IRQ(C, 7),
-};
-
-static struct regmap_irq_chip tps80031_irq_chip = {
-	.name = "tps80031",
-	.irqs = tps80031_main_irqs,
-	.num_irqs = ARRAY_SIZE(tps80031_main_irqs),
-	.num_regs = 3,
-	.status_base = TPS80031_INT_STS_A,
-	.mask_base = TPS80031_INT_MSK_LINE_A,
-};
-
-#define PUPD_DATA(_reg, _pulldown_bit, _pullup_bit)	\
-	{						\
-		.reg = TPS80031_CFG_INPUT_PUPD##_reg,	\
-		.pulldown_bit = _pulldown_bit,		\
-		.pullup_bit = _pullup_bit,		\
-	}
-
-static const struct tps80031_pupd_data tps80031_pupds[] = {
-	[TPS80031_PREQ1]		= PUPD_DATA(1, BIT(0),	BIT(1)),
-	[TPS80031_PREQ2A]		= PUPD_DATA(1, BIT(2),	BIT(3)),
-	[TPS80031_PREQ2B]		= PUPD_DATA(1, BIT(4),	BIT(5)),
-	[TPS80031_PREQ2C]		= PUPD_DATA(1, BIT(6),	BIT(7)),
-	[TPS80031_PREQ3]		= PUPD_DATA(2, BIT(0),	BIT(1)),
-	[TPS80031_NRES_WARM]		= PUPD_DATA(2, 0,	BIT(2)),
-	[TPS80031_PWM_FORCE]		= PUPD_DATA(2, BIT(5),	0),
-	[TPS80031_CHRG_EXT_CHRG_STATZ]	= PUPD_DATA(2, 0,	BIT(6)),
-	[TPS80031_SIM]			= PUPD_DATA(3, BIT(0),	BIT(1)),
-	[TPS80031_MMC]			= PUPD_DATA(3, BIT(2),	BIT(3)),
-	[TPS80031_GPADC_START]		= PUPD_DATA(3, BIT(4),	0),
-	[TPS80031_DVSI2C_SCL]		= PUPD_DATA(4, 0,	BIT(0)),
-	[TPS80031_DVSI2C_SDA]		= PUPD_DATA(4, 0,	BIT(1)),
-	[TPS80031_CTLI2C_SCL]		= PUPD_DATA(4, 0,	BIT(2)),
-	[TPS80031_CTLI2C_SDA]		= PUPD_DATA(4, 0,	BIT(3)),
-};
-static struct tps80031 *tps80031_power_off_dev;
-
-int tps80031_ext_power_req_config(struct device *dev,
-		unsigned long ext_ctrl_flag, int preq_bit,
-		int state_reg_add, int trans_reg_add)
-{
-	u8 res_ass_reg = 0;
-	int preq_mask_bit = 0;
-	int ret;
-
-	if (!(ext_ctrl_flag & TPS80031_EXT_PWR_REQ))
-		return 0;
-
-	if (ext_ctrl_flag & TPS80031_PWR_REQ_INPUT_PREQ1) {
-		res_ass_reg = TPS80031_PREQ1_RES_ASS_A + (preq_bit >> 3);
-		preq_mask_bit = 5;
-	} else if (ext_ctrl_flag & TPS80031_PWR_REQ_INPUT_PREQ2) {
-		res_ass_reg = TPS80031_PREQ2_RES_ASS_A + (preq_bit >> 3);
-		preq_mask_bit = 6;
-	} else if (ext_ctrl_flag & TPS80031_PWR_REQ_INPUT_PREQ3) {
-		res_ass_reg = TPS80031_PREQ3_RES_ASS_A + (preq_bit >> 3);
-		preq_mask_bit = 7;
-	}
-
-	/* Configure REQ_ASS registers */
-	ret = tps80031_set_bits(dev, TPS80031_SLAVE_ID1, res_ass_reg,
-					BIT(preq_bit & 0x7));
-	if (ret < 0) {
-		dev_err(dev, "reg 0x%02x setbit failed, err = %d\n",
-				res_ass_reg, ret);
-		return ret;
-	}
-
-	/* Unmask the PREQ */
-	ret = tps80031_clr_bits(dev, TPS80031_SLAVE_ID1,
-			TPS80031_PHOENIX_MSK_TRANSITION, BIT(preq_mask_bit));
-	if (ret < 0) {
-		dev_err(dev, "reg 0x%02x clrbit failed, err = %d\n",
-			TPS80031_PHOENIX_MSK_TRANSITION, ret);
-		return ret;
-	}
-
-	/* Switch regulator control to resource now */
-	if (ext_ctrl_flag & (TPS80031_PWR_REQ_INPUT_PREQ2 |
-					TPS80031_PWR_REQ_INPUT_PREQ3)) {
-		ret = tps80031_update(dev, TPS80031_SLAVE_ID1, state_reg_add,
-						0x0, TPS80031_STATE_MASK);
-		if (ret < 0)
-			dev_err(dev, "reg 0x%02x update failed, err = %d\n",
-				state_reg_add, ret);
-	} else {
-		ret = tps80031_update(dev, TPS80031_SLAVE_ID1, trans_reg_add,
-				TPS80031_TRANS_SLEEP_OFF,
-				TPS80031_TRANS_SLEEP_MASK);
-		if (ret < 0)
-			dev_err(dev, "reg 0x%02x update failed, err = %d\n",
-				trans_reg_add, ret);
-	}
-	return ret;
-}
-EXPORT_SYMBOL_GPL(tps80031_ext_power_req_config);
-
-static void tps80031_power_off(void)
-{
-	dev_info(tps80031_power_off_dev->dev, "switching off PMU\n");
-	tps80031_write(tps80031_power_off_dev->dev, TPS80031_SLAVE_ID1,
-				TPS80031_PHOENIX_DEV_ON, TPS80031_DEVOFF);
-}
-
-static void tps80031_pupd_init(struct tps80031 *tps80031,
-			       struct tps80031_platform_data *pdata)
-{
-	struct tps80031_pupd_init_data *pupd_init_data = pdata->pupd_init_data;
-	int data_size = pdata->pupd_init_data_size;
-	int i;
-
-	for (i = 0; i < data_size; ++i) {
-		struct tps80031_pupd_init_data *pupd_init = &pupd_init_data[i];
-		const struct tps80031_pupd_data *pupd =
-			&tps80031_pupds[pupd_init->input_pin];
-		u8 update_value = 0;
-		u8 update_mask = pupd->pulldown_bit | pupd->pullup_bit;
-
-		if (pupd_init->setting == TPS80031_PUPD_PULLDOWN)
-			update_value = pupd->pulldown_bit;
-		else if (pupd_init->setting == TPS80031_PUPD_PULLUP)
-			update_value = pupd->pullup_bit;
-
-		tps80031_update(tps80031->dev, TPS80031_SLAVE_ID1, pupd->reg,
-				update_value, update_mask);
-	}
-}
-
-static int tps80031_init_ext_control(struct tps80031 *tps80031,
-			struct tps80031_platform_data *pdata)
-{
-	struct device *dev = tps80031->dev;
-	int ret;
-	int i;
-
-	/* Clear all external control for this rail */
-	for (i = 0; i < 9; ++i) {
-		ret = tps80031_write(dev, TPS80031_SLAVE_ID1,
-				TPS80031_PREQ1_RES_ASS_A + i, 0);
-		if (ret < 0) {
-			dev_err(dev, "reg 0x%02x write failed, err = %d\n",
-				TPS80031_PREQ1_RES_ASS_A + i, ret);
-			return ret;
-		}
-	}
-
-	/* Mask the PREQ */
-	ret = tps80031_set_bits(dev, TPS80031_SLAVE_ID1,
-			TPS80031_PHOENIX_MSK_TRANSITION, 0x7 << 5);
-	if (ret < 0) {
-		dev_err(dev, "reg 0x%02x set_bits failed, err = %d\n",
-			TPS80031_PHOENIX_MSK_TRANSITION, ret);
-		return ret;
-	}
-	return ret;
-}
-
-static int tps80031_irq_init(struct tps80031 *tps80031, int irq, int irq_base)
-{
-	struct device *dev = tps80031->dev;
-	int i, ret;
-
-	/*
-	 * The MASK register used for updating status register when
-	 * interrupt occurs and LINE register used to pass the status
-	 * to actual interrupt line.  As per datasheet:
-	 * When INT_MSK_LINE [i] is set to 1, the associated interrupt
-	 * number i is INT line masked, which means that no interrupt is
-	 * generated on the INT line.
-	 * When INT_MSK_LINE [i] is set to 0, the associated interrupt
-	 * number i is  line enabled: An interrupt is generated on the
-	 * INT line.
-	 * In any case, the INT_STS [i] status bit may or may not be updated,
-	 * only linked to the INT_MSK_STS [i] configuration register bit.
-	 *
-	 * When INT_MSK_STS [i] is set to 1, the associated interrupt number
-	 * i is status masked, which means that no interrupt is stored in
-	 * the INT_STS[i] status bit. Note that no interrupt number i is
-	 * generated on the INT line, even if the INT_MSK_LINE [i] register
-	 * bit is set to 0.
-	 * When INT_MSK_STS [i] is set to 0, the associated interrupt number i
-	 * is status enabled: An interrupt status is updated in the INT_STS [i]
-	 * register. The interrupt may or may not be generated on the INT line,
-	 * depending on the INT_MSK_LINE [i] configuration register bit.
-	 */
-	for (i = 0; i < 3; i++)
-		tps80031_write(dev, TPS80031_SLAVE_ID2,
-				TPS80031_INT_MSK_STS_A + i, 0x00);
-
-	ret = regmap_add_irq_chip(tps80031->regmap[TPS80031_SLAVE_ID2], irq,
-			IRQF_ONESHOT, irq_base,
-			&tps80031_irq_chip, &tps80031->irq_data);
-	if (ret < 0) {
-		dev_err(dev, "add irq failed, err = %d\n", ret);
-		return ret;
-	}
-	return ret;
-}
-
-static bool rd_wr_reg_id0(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case TPS80031_SMPS1_CFG_FORCE ... TPS80031_SMPS2_CFG_VOLTAGE:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static bool rd_wr_reg_id1(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case TPS80031_SECONDS_REG ... TPS80031_RTC_RESET_STATUS_REG:
-	case TPS80031_VALIDITY0 ... TPS80031_VALIDITY7:
-	case TPS80031_PHOENIX_START_CONDITION ... TPS80031_KEY_PRESS_DUR_CFG:
-	case TPS80031_SMPS4_CFG_TRANS ... TPS80031_SMPS3_CFG_VOLTAGE:
-	case TPS80031_BROADCAST_ADDR_ALL ... TPS80031_BROADCAST_ADDR_CLK_RST:
-	case TPS80031_VANA_CFG_TRANS ... TPS80031_LDO7_CFG_VOLTAGE:
-	case TPS80031_REGEN1_CFG_TRANS ... TPS80031_TMP_CFG_STATE:
-	case TPS80031_PREQ1_RES_ASS_A ... TPS80031_PREQ3_RES_ASS_C:
-	case TPS80031_SMPS_OFFSET ... TPS80031_BATDEBOUNCING:
-	case TPS80031_CFG_INPUT_PUPD1 ... TPS80031_CFG_SMPS_PD:
-	case TPS80031_BACKUP_REG:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static bool is_volatile_reg_id1(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case TPS80031_SMPS4_CFG_TRANS ... TPS80031_SMPS3_CFG_VOLTAGE:
-	case TPS80031_VANA_CFG_TRANS ... TPS80031_LDO7_CFG_VOLTAGE:
-	case TPS80031_REGEN1_CFG_TRANS ... TPS80031_TMP_CFG_STATE:
-	case TPS80031_PREQ1_RES_ASS_A ... TPS80031_PREQ3_RES_ASS_C:
-	case TPS80031_SMPS_OFFSET ... TPS80031_BATDEBOUNCING:
-	case TPS80031_CFG_INPUT_PUPD1 ... TPS80031_CFG_SMPS_PD:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static bool rd_wr_reg_id2(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case TPS80031_USB_VENDOR_ID_LSB ... TPS80031_USB_OTG_REVISION:
-	case TPS80031_GPADC_CTRL ... TPS80031_CTRL_P1:
-	case TPS80031_RTCH0_LSB ... TPS80031_GPCH0_MSB:
-	case TPS80031_TOGGLE1 ... TPS80031_VIBMODE:
-	case TPS80031_PWM1ON ... TPS80031_PWM2OFF:
-	case TPS80031_FG_REG_00 ... TPS80031_FG_REG_11:
-	case TPS80031_INT_STS_A ... TPS80031_INT_MSK_STS_C:
-	case TPS80031_CONTROLLER_CTRL2 ... TPS80031_LED_PWM_CTRL2:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static bool rd_wr_reg_id3(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case TPS80031_GPADC_TRIM0 ... TPS80031_GPADC_TRIM18:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static const struct regmap_config tps80031_regmap_configs[] = {
-	{
-		.reg_bits = 8,
-		.val_bits = 8,
-		.writeable_reg = rd_wr_reg_id0,
-		.readable_reg = rd_wr_reg_id0,
-		.max_register = TPS80031_MAX_REGISTER,
-	},
-	{
-		.reg_bits = 8,
-		.val_bits = 8,
-		.writeable_reg = rd_wr_reg_id1,
-		.readable_reg = rd_wr_reg_id1,
-		.volatile_reg = is_volatile_reg_id1,
-		.max_register = TPS80031_MAX_REGISTER,
-	},
-	{
-		.reg_bits = 8,
-		.val_bits = 8,
-		.writeable_reg = rd_wr_reg_id2,
-		.readable_reg = rd_wr_reg_id2,
-		.max_register = TPS80031_MAX_REGISTER,
-	},
-	{
-		.reg_bits = 8,
-		.val_bits = 8,
-		.writeable_reg = rd_wr_reg_id3,
-		.readable_reg = rd_wr_reg_id3,
-		.max_register = TPS80031_MAX_REGISTER,
-	},
-};
-
-static int tps80031_probe(struct i2c_client *client,
-			  const struct i2c_device_id *id)
-{
-	struct tps80031_platform_data *pdata = dev_get_platdata(&client->dev);
-	struct tps80031 *tps80031;
-	int ret;
-	uint8_t es_version;
-	uint8_t ep_ver;
-	int i;
-
-	if (!pdata) {
-		dev_err(&client->dev, "tps80031 requires platform data\n");
-		return -EINVAL;
-	}
-
-	tps80031 = devm_kzalloc(&client->dev, sizeof(*tps80031), GFP_KERNEL);
-	if (!tps80031)
-		return -ENOMEM;
-
-	for (i = 0; i < TPS80031_NUM_SLAVES; i++) {
-		if (tps80031_slave_address[i] == client->addr)
-			tps80031->clients[i] = client;
-		else
-			tps80031->clients[i] = devm_i2c_new_dummy_device(&client->dev,
-						client->adapter, tps80031_slave_address[i]);
-		if (IS_ERR(tps80031->clients[i])) {
-			dev_err(&client->dev, "can't attach client %d\n", i);
-			return PTR_ERR(tps80031->clients[i]);
-		}
-
-		i2c_set_clientdata(tps80031->clients[i], tps80031);
-		tps80031->regmap[i] = devm_regmap_init_i2c(tps80031->clients[i],
-					&tps80031_regmap_configs[i]);
-		if (IS_ERR(tps80031->regmap[i])) {
-			ret = PTR_ERR(tps80031->regmap[i]);
-			dev_err(&client->dev,
-				"regmap %d init failed, err %d\n", i, ret);
-			return ret;
-		}
-	}
-
-	ret = tps80031_read(&client->dev, TPS80031_SLAVE_ID3,
-			TPS80031_JTAGVERNUM, &es_version);
-	if (ret < 0) {
-		dev_err(&client->dev,
-			"Silicon version number read failed: %d\n", ret);
-		return ret;
-	}
-
-	ret = tps80031_read(&client->dev, TPS80031_SLAVE_ID3,
-			TPS80031_EPROM_REV, &ep_ver);
-	if (ret < 0) {
-		dev_err(&client->dev,
-			"Silicon eeprom version read failed: %d\n", ret);
-		return ret;
-	}
-
-	dev_info(&client->dev, "ES version 0x%02x and EPROM version 0x%02x\n",
-					es_version, ep_ver);
-	tps80031->es_version = es_version;
-	tps80031->dev = &client->dev;
-	i2c_set_clientdata(client, tps80031);
-	tps80031->chip_info = id->driver_data;
-
-	ret = tps80031_irq_init(tps80031, client->irq, pdata->irq_base);
-	if (ret) {
-		dev_err(&client->dev, "IRQ init failed: %d\n", ret);
-		return ret;
-	}
-
-	tps80031_pupd_init(tps80031, pdata);
-
-	tps80031_init_ext_control(tps80031, pdata);
-
-	ret = mfd_add_devices(tps80031->dev, -1,
-			tps80031_cell, ARRAY_SIZE(tps80031_cell),
-			NULL, 0,
-			regmap_irq_get_domain(tps80031->irq_data));
-	if (ret < 0) {
-		dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
-		goto fail_mfd_add;
-	}
-
-	if (pdata->use_power_off && !pm_power_off) {
-		tps80031_power_off_dev = tps80031;
-		pm_power_off = tps80031_power_off;
-	}
-	return 0;
-
-fail_mfd_add:
-	regmap_del_irq_chip(client->irq, tps80031->irq_data);
-	return ret;
-}
-
-static const struct i2c_device_id tps80031_id_table[] = {
-	{ "tps80031", TPS80031 },
-	{ "tps80032", TPS80032 },
-	{ }
-};
-
-static struct i2c_driver tps80031_driver = {
-	.driver	= {
-		.name			= "tps80031",
-		.suppress_bind_attrs	= true,
-	},
-	.probe		= tps80031_probe,
-	.id_table	= tps80031_id_table,
-};
-
-static int __init tps80031_init(void)
-{
-	return i2c_add_driver(&tps80031_driver);
-}
-subsys_initcall(tps80031_init);