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- // SPDX-License-Identifier: GPL-2.0
- // Copyright (C) STMicroelectronics 2018
- // Author: Pascal Paillet <[email protected]>
- #include <linux/i2c.h>
- #include <linux/interrupt.h>
- #include <linux/mfd/core.h>
- #include <linux/mfd/stpmic1.h>
- #include <linux/module.h>
- #include <linux/of.h>
- #include <linux/of_irq.h>
- #include <linux/of_platform.h>
- #include <linux/pm_wakeirq.h>
- #include <linux/regmap.h>
- #include <dt-bindings/mfd/st,stpmic1.h>
- #define STPMIC1_MAIN_IRQ 0
- static const struct regmap_range stpmic1_readable_ranges[] = {
- regmap_reg_range(TURN_ON_SR, VERSION_SR),
- regmap_reg_range(SWOFF_PWRCTRL_CR, LDO6_STDBY_CR),
- regmap_reg_range(BST_SW_CR, BST_SW_CR),
- regmap_reg_range(INT_PENDING_R1, INT_PENDING_R4),
- regmap_reg_range(INT_CLEAR_R1, INT_CLEAR_R4),
- regmap_reg_range(INT_MASK_R1, INT_MASK_R4),
- regmap_reg_range(INT_SET_MASK_R1, INT_SET_MASK_R4),
- regmap_reg_range(INT_CLEAR_MASK_R1, INT_CLEAR_MASK_R4),
- regmap_reg_range(INT_SRC_R1, INT_SRC_R1),
- };
- static const struct regmap_range stpmic1_writeable_ranges[] = {
- regmap_reg_range(SWOFF_PWRCTRL_CR, LDO6_STDBY_CR),
- regmap_reg_range(BST_SW_CR, BST_SW_CR),
- regmap_reg_range(INT_CLEAR_R1, INT_CLEAR_R4),
- regmap_reg_range(INT_SET_MASK_R1, INT_SET_MASK_R4),
- regmap_reg_range(INT_CLEAR_MASK_R1, INT_CLEAR_MASK_R4),
- };
- static const struct regmap_range stpmic1_volatile_ranges[] = {
- regmap_reg_range(TURN_ON_SR, VERSION_SR),
- regmap_reg_range(WCHDG_CR, WCHDG_CR),
- regmap_reg_range(INT_PENDING_R1, INT_PENDING_R4),
- regmap_reg_range(INT_SRC_R1, INT_SRC_R4),
- };
- static const struct regmap_access_table stpmic1_readable_table = {
- .yes_ranges = stpmic1_readable_ranges,
- .n_yes_ranges = ARRAY_SIZE(stpmic1_readable_ranges),
- };
- static const struct regmap_access_table stpmic1_writeable_table = {
- .yes_ranges = stpmic1_writeable_ranges,
- .n_yes_ranges = ARRAY_SIZE(stpmic1_writeable_ranges),
- };
- static const struct regmap_access_table stpmic1_volatile_table = {
- .yes_ranges = stpmic1_volatile_ranges,
- .n_yes_ranges = ARRAY_SIZE(stpmic1_volatile_ranges),
- };
- static const struct regmap_config stpmic1_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .cache_type = REGCACHE_RBTREE,
- .max_register = PMIC_MAX_REGISTER_ADDRESS,
- .rd_table = &stpmic1_readable_table,
- .wr_table = &stpmic1_writeable_table,
- .volatile_table = &stpmic1_volatile_table,
- };
- static const struct regmap_irq stpmic1_irqs[] = {
- REGMAP_IRQ_REG(IT_PONKEY_F, 0, 0x01),
- REGMAP_IRQ_REG(IT_PONKEY_R, 0, 0x02),
- REGMAP_IRQ_REG(IT_WAKEUP_F, 0, 0x04),
- REGMAP_IRQ_REG(IT_WAKEUP_R, 0, 0x08),
- REGMAP_IRQ_REG(IT_VBUS_OTG_F, 0, 0x10),
- REGMAP_IRQ_REG(IT_VBUS_OTG_R, 0, 0x20),
- REGMAP_IRQ_REG(IT_SWOUT_F, 0, 0x40),
- REGMAP_IRQ_REG(IT_SWOUT_R, 0, 0x80),
- REGMAP_IRQ_REG(IT_CURLIM_BUCK1, 1, 0x01),
- REGMAP_IRQ_REG(IT_CURLIM_BUCK2, 1, 0x02),
- REGMAP_IRQ_REG(IT_CURLIM_BUCK3, 1, 0x04),
- REGMAP_IRQ_REG(IT_CURLIM_BUCK4, 1, 0x08),
- REGMAP_IRQ_REG(IT_OCP_OTG, 1, 0x10),
- REGMAP_IRQ_REG(IT_OCP_SWOUT, 1, 0x20),
- REGMAP_IRQ_REG(IT_OCP_BOOST, 1, 0x40),
- REGMAP_IRQ_REG(IT_OVP_BOOST, 1, 0x80),
- REGMAP_IRQ_REG(IT_CURLIM_LDO1, 2, 0x01),
- REGMAP_IRQ_REG(IT_CURLIM_LDO2, 2, 0x02),
- REGMAP_IRQ_REG(IT_CURLIM_LDO3, 2, 0x04),
- REGMAP_IRQ_REG(IT_CURLIM_LDO4, 2, 0x08),
- REGMAP_IRQ_REG(IT_CURLIM_LDO5, 2, 0x10),
- REGMAP_IRQ_REG(IT_CURLIM_LDO6, 2, 0x20),
- REGMAP_IRQ_REG(IT_SHORT_SWOTG, 2, 0x40),
- REGMAP_IRQ_REG(IT_SHORT_SWOUT, 2, 0x80),
- REGMAP_IRQ_REG(IT_TWARN_F, 3, 0x01),
- REGMAP_IRQ_REG(IT_TWARN_R, 3, 0x02),
- REGMAP_IRQ_REG(IT_VINLOW_F, 3, 0x04),
- REGMAP_IRQ_REG(IT_VINLOW_R, 3, 0x08),
- REGMAP_IRQ_REG(IT_SWIN_F, 3, 0x40),
- REGMAP_IRQ_REG(IT_SWIN_R, 3, 0x80),
- };
- static const struct regmap_irq_chip stpmic1_regmap_irq_chip = {
- .name = "pmic_irq",
- .status_base = INT_PENDING_R1,
- .mask_base = INT_CLEAR_MASK_R1,
- .unmask_base = INT_SET_MASK_R1,
- .ack_base = INT_CLEAR_R1,
- .num_regs = STPMIC1_PMIC_NUM_IRQ_REGS,
- .irqs = stpmic1_irqs,
- .num_irqs = ARRAY_SIZE(stpmic1_irqs),
- };
- static int stpmic1_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
- {
- struct stpmic1 *ddata;
- struct device *dev = &i2c->dev;
- int ret;
- struct device_node *np = dev->of_node;
- u32 reg;
- ddata = devm_kzalloc(dev, sizeof(struct stpmic1), GFP_KERNEL);
- if (!ddata)
- return -ENOMEM;
- i2c_set_clientdata(i2c, ddata);
- ddata->dev = dev;
- ddata->regmap = devm_regmap_init_i2c(i2c, &stpmic1_regmap_config);
- if (IS_ERR(ddata->regmap))
- return PTR_ERR(ddata->regmap);
- ddata->irq = of_irq_get(np, STPMIC1_MAIN_IRQ);
- if (ddata->irq < 0) {
- dev_err(dev, "Failed to get main IRQ: %d\n", ddata->irq);
- return ddata->irq;
- }
- ret = regmap_read(ddata->regmap, VERSION_SR, ®);
- if (ret) {
- dev_err(dev, "Unable to read PMIC version\n");
- return ret;
- }
- dev_info(dev, "PMIC Chip Version: 0x%x\n", reg);
- /* Initialize PMIC IRQ Chip & associated IRQ domains */
- ret = devm_regmap_add_irq_chip(dev, ddata->regmap, ddata->irq,
- IRQF_ONESHOT | IRQF_SHARED,
- 0, &stpmic1_regmap_irq_chip,
- &ddata->irq_data);
- if (ret) {
- dev_err(dev, "IRQ Chip registration failed: %d\n", ret);
- return ret;
- }
- return devm_of_platform_populate(dev);
- }
- #ifdef CONFIG_PM_SLEEP
- static int stpmic1_suspend(struct device *dev)
- {
- struct i2c_client *i2c = to_i2c_client(dev);
- struct stpmic1 *pmic_dev = i2c_get_clientdata(i2c);
- disable_irq(pmic_dev->irq);
- return 0;
- }
- static int stpmic1_resume(struct device *dev)
- {
- struct i2c_client *i2c = to_i2c_client(dev);
- struct stpmic1 *pmic_dev = i2c_get_clientdata(i2c);
- int ret;
- ret = regcache_sync(pmic_dev->regmap);
- if (ret)
- return ret;
- enable_irq(pmic_dev->irq);
- return 0;
- }
- #endif
- static SIMPLE_DEV_PM_OPS(stpmic1_pm, stpmic1_suspend, stpmic1_resume);
- static const struct of_device_id stpmic1_of_match[] = {
- { .compatible = "st,stpmic1", },
- {},
- };
- MODULE_DEVICE_TABLE(of, stpmic1_of_match);
- static struct i2c_driver stpmic1_driver = {
- .driver = {
- .name = "stpmic1",
- .of_match_table = of_match_ptr(stpmic1_of_match),
- .pm = &stpmic1_pm,
- },
- .probe = stpmic1_probe,
- };
- module_i2c_driver(stpmic1_driver);
- MODULE_DESCRIPTION("STPMIC1 PMIC Driver");
- MODULE_AUTHOR("Pascal Paillet <[email protected]>");
- MODULE_LICENSE("GPL v2");
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