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dc0c386e09
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174731.4059811-1-robh@kernel.org Signed-off-by: Lee Jones <lee@kernel.org>
230 lines
5.8 KiB
C
230 lines
5.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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//
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// Copyright (C) 2018 ROHM Semiconductors
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//
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// ROHM BD71837MWV and BD71847MWV PMIC driver
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//
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// Datasheet for BD71837MWV available from
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// https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e
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#include <linux/gpio_keys.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/rohm-bd718x7.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/types.h>
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static struct gpio_keys_button button = {
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.code = KEY_POWER,
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.gpio = -1,
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.type = EV_KEY,
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};
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static struct gpio_keys_platform_data bd718xx_powerkey_data = {
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.buttons = &button,
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.nbuttons = 1,
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.name = "bd718xx-pwrkey",
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};
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static struct mfd_cell bd71837_mfd_cells[] = {
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{
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.name = "gpio-keys",
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.platform_data = &bd718xx_powerkey_data,
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.pdata_size = sizeof(bd718xx_powerkey_data),
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},
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{ .name = "bd71837-clk", },
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{ .name = "bd71837-pmic", },
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};
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static struct mfd_cell bd71847_mfd_cells[] = {
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{
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.name = "gpio-keys",
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.platform_data = &bd718xx_powerkey_data,
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.pdata_size = sizeof(bd718xx_powerkey_data),
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},
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{ .name = "bd71847-clk", },
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{ .name = "bd71847-pmic", },
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};
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static const struct regmap_irq bd718xx_irqs[] = {
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REGMAP_IRQ_REG(BD718XX_INT_SWRST, 0, BD718XX_INT_SWRST_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_PWRBTN_S, 0, BD718XX_INT_PWRBTN_S_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_PWRBTN_L, 0, BD718XX_INT_PWRBTN_L_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_PWRBTN, 0, BD718XX_INT_PWRBTN_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_WDOG, 0, BD718XX_INT_WDOG_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_ON_REQ, 0, BD718XX_INT_ON_REQ_MASK),
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REGMAP_IRQ_REG(BD718XX_INT_STBY_REQ, 0, BD718XX_INT_STBY_REQ_MASK),
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};
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static struct regmap_irq_chip bd718xx_irq_chip = {
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.name = "bd718xx-irq",
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.irqs = bd718xx_irqs,
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.num_irqs = ARRAY_SIZE(bd718xx_irqs),
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.num_regs = 1,
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.irq_reg_stride = 1,
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.status_base = BD718XX_REG_IRQ,
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.mask_base = BD718XX_REG_MIRQ,
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.ack_base = BD718XX_REG_IRQ,
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.init_ack_masked = true,
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};
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static const struct regmap_range pmic_status_range = {
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.range_min = BD718XX_REG_IRQ,
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.range_max = BD718XX_REG_POW_STATE,
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};
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static const struct regmap_access_table volatile_regs = {
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.yes_ranges = &pmic_status_range,
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.n_yes_ranges = 1,
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};
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static const struct regmap_config bd718xx_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.volatile_table = &volatile_regs,
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.max_register = BD718XX_MAX_REGISTER - 1,
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.cache_type = REGCACHE_RBTREE,
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};
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static int bd718xx_init_press_duration(struct regmap *regmap,
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struct device *dev)
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{
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u32 short_press_ms, long_press_ms;
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u32 short_press_value, long_press_value;
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int ret;
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ret = of_property_read_u32(dev->of_node, "rohm,short-press-ms",
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&short_press_ms);
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if (!ret) {
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short_press_value = min(15u, (short_press_ms + 250) / 500);
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ret = regmap_update_bits(regmap, BD718XX_REG_PWRONCONFIG0,
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BD718XX_PWRBTN_PRESS_DURATION_MASK,
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short_press_value);
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if (ret) {
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dev_err(dev, "Failed to init pwron short press\n");
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return ret;
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}
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}
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ret = of_property_read_u32(dev->of_node, "rohm,long-press-ms",
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&long_press_ms);
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if (!ret) {
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long_press_value = min(15u, (long_press_ms + 500) / 1000);
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ret = regmap_update_bits(regmap, BD718XX_REG_PWRONCONFIG1,
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BD718XX_PWRBTN_PRESS_DURATION_MASK,
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long_press_value);
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if (ret) {
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dev_err(dev, "Failed to init pwron long press\n");
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return ret;
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}
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}
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return 0;
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}
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static int bd718xx_i2c_probe(struct i2c_client *i2c)
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{
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struct regmap *regmap;
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struct regmap_irq_chip_data *irq_data;
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int ret;
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unsigned int chip_type;
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struct mfd_cell *mfd;
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int cells;
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if (!i2c->irq) {
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dev_err(&i2c->dev, "No IRQ configured\n");
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return -EINVAL;
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}
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chip_type = (unsigned int)(uintptr_t)
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of_device_get_match_data(&i2c->dev);
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switch (chip_type) {
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case ROHM_CHIP_TYPE_BD71837:
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mfd = bd71837_mfd_cells;
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cells = ARRAY_SIZE(bd71837_mfd_cells);
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break;
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case ROHM_CHIP_TYPE_BD71847:
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mfd = bd71847_mfd_cells;
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cells = ARRAY_SIZE(bd71847_mfd_cells);
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break;
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default:
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dev_err(&i2c->dev, "Unknown device type");
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return -EINVAL;
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}
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regmap = devm_regmap_init_i2c(i2c, &bd718xx_regmap_config);
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if (IS_ERR(regmap))
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return dev_err_probe(&i2c->dev, PTR_ERR(regmap),
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"regmap initialization failed\n");
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ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, i2c->irq,
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IRQF_ONESHOT, 0, &bd718xx_irq_chip,
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&irq_data);
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if (ret)
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return dev_err_probe(&i2c->dev, ret, "Failed to add irq_chip\n");
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ret = bd718xx_init_press_duration(regmap, &i2c->dev);
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if (ret)
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return ret;
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ret = regmap_irq_get_virq(irq_data, BD718XX_INT_PWRBTN_S);
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if (ret < 0)
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return dev_err_probe(&i2c->dev, ret, "Failed to get the IRQ\n");
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button.irq = ret;
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ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
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mfd, cells, NULL, 0,
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regmap_irq_get_domain(irq_data));
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if (ret)
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dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
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return ret;
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}
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static const struct of_device_id bd718xx_of_match[] = {
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{
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.compatible = "rohm,bd71837",
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.data = (void *)ROHM_CHIP_TYPE_BD71837,
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},
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{
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.compatible = "rohm,bd71847",
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.data = (void *)ROHM_CHIP_TYPE_BD71847,
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},
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{
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.compatible = "rohm,bd71850",
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.data = (void *)ROHM_CHIP_TYPE_BD71847,
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, bd718xx_of_match);
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static struct i2c_driver bd718xx_i2c_driver = {
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.driver = {
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.name = "rohm-bd718x7",
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.of_match_table = bd718xx_of_match,
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},
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.probe = bd718xx_i2c_probe,
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};
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static int __init bd718xx_i2c_init(void)
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{
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return i2c_add_driver(&bd718xx_i2c_driver);
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}
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/* Initialise early so consumer devices can complete system boot */
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subsys_initcall(bd718xx_i2c_init);
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static void __exit bd718xx_i2c_exit(void)
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{
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i2c_del_driver(&bd718xx_i2c_driver);
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}
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module_exit(bd718xx_i2c_exit);
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MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
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MODULE_DESCRIPTION("ROHM BD71837/BD71847 Power Management IC driver");
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MODULE_LICENSE("GPL");
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