@@ -1016,6 +1016,13 @@ config REGULATOR_QCOM_USB_VBUS
Say M here if you want to include support for enabling the VBUS output
as a module. The module will be named "qcom_usb_vbus_regulator".
+config REGULATOR_RAA215300
+ tristate "Renesas RAA215300 driver"
+ select REGMAP_I2C
+ depends on I2C
+ help
+ Support for the Renesas RAA215300 PMIC.
+
config REGULATOR_RASPBERRYPI_TOUCHSCREEN_ATTINY
tristate "Raspberry Pi 7-inch touchscreen panel ATTINY regulator"
depends on BACKLIGHT_CLASS_DEVICE
@@ -122,6 +122,7 @@ obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
+obj-$(CONFIG_REGULATOR_RAA215300) += raa215300.o
obj-$(CONFIG_REGULATOR_RASPBERRYPI_TOUCHSCREEN_ATTINY) += rpi-panel-attiny-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
obj-$(CONFIG_REGULATOR_RK808) += rk808-regulator.o
new file mode 100644
@@ -0,0 +1,190 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Renesas RAA215300 PMIC driver
+//
+// Copyright (C) 2023 Renesas Electronics Corporation
+//
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#define RAA215300_FAULT_LATCHED_STATUS_1 0x59
+#define RAA215300_FAULT_LATCHED_STATUS_2 0x5a
+#define RAA215300_FAULT_LATCHED_STATUS_3 0x5b
+#define RAA215300_FAULT_LATCHED_STATUS_4 0x5c
+#define RAA215300_FAULT_LATCHED_STATUS_6 0x5e
+
+#define RAA215300_INT_MASK_1 0x64
+#define RAA215300_INT_MASK_2 0x65
+#define RAA215300_INT_MASK_3 0x66
+#define RAA215300_INT_MASK_4 0x67
+#define RAA215300_INT_MASK_6 0x68
+
+#define RAA215300_REG_BLOCK_EN 0x6c
+#define RAA215300_HW_REV 0xf8
+
+#define RAA215300_INT_MASK_1_ALL GENMASK(5, 0)
+#define RAA215300_INT_MASK_2_ALL GENMASK(3, 0)
+#define RAA215300_INT_MASK_3_ALL GENMASK(5, 0)
+#define RAA215300_INT_MASK_4_ALL BIT(0)
+#define RAA215300_INT_MASK_6_ALL GENMASK(7, 0)
+
+#define RAA215300_REG_BLOCK_EN_RTC_EN BIT(6)
+#define RAA215300_RTC_DEFAULT_ADDR 0x6f
+
+const char *clkin_name = "clkin";
+const char *xin_name = "xin";
+static struct clk *clk;
+
+static const struct regmap_config raa215300_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xff,
+};
+
+static void raa215300_rtc_unregister_device(void *data)
+{
+ i2c_unregister_device(data);
+ if (!clk) {
+ clk_unregister_fixed_rate(clk);
+ clk = NULL;
+ }
+}
+
+static int raa215300_clk_present(struct i2c_client *client, const char *name)
+{
+ struct clk *clk;
+
+ clk = devm_clk_get_optional(&client->dev, name);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ return !!clk;
+}
+
+static int raa215300_i2c_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ const char *clk_name = xin_name;
+ unsigned int pmic_version, val;
+ struct regmap *regmap;
+ int ret;
+
+ regmap = devm_regmap_init_i2c(client, &raa215300_regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(dev, PTR_ERR(regmap),
+ "regmap i2c init failed\n");
+
+ ret = regmap_read(regmap, RAA215300_HW_REV, &pmic_version);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "HW rev read failed\n");
+
+ dev_dbg(dev, "RAA215300 PMIC version 0x%04x\n", pmic_version);
+
+ /* Clear all blocks except RTC, if enabled */
+ regmap_read(regmap, RAA215300_REG_BLOCK_EN, &val);
+ val &= RAA215300_REG_BLOCK_EN_RTC_EN;
+ regmap_write(regmap, RAA215300_REG_BLOCK_EN, val);
+
+ /*Clear the latched registers */
+ regmap_read(regmap, RAA215300_FAULT_LATCHED_STATUS_1, &val);
+ regmap_write(regmap, RAA215300_FAULT_LATCHED_STATUS_1, val);
+ regmap_read(regmap, RAA215300_FAULT_LATCHED_STATUS_2, &val);
+ regmap_write(regmap, RAA215300_FAULT_LATCHED_STATUS_2, val);
+ regmap_read(regmap, RAA215300_FAULT_LATCHED_STATUS_3, &val);
+ regmap_write(regmap, RAA215300_FAULT_LATCHED_STATUS_3, val);
+ regmap_read(regmap, RAA215300_FAULT_LATCHED_STATUS_4, &val);
+ regmap_write(regmap, RAA215300_FAULT_LATCHED_STATUS_4, val);
+ regmap_read(regmap, RAA215300_FAULT_LATCHED_STATUS_6, &val);
+ regmap_write(regmap, RAA215300_FAULT_LATCHED_STATUS_6, val);
+
+ /* Mask all the PMIC interrupts */
+ regmap_write(regmap, RAA215300_INT_MASK_1, RAA215300_INT_MASK_1_ALL);
+ regmap_write(regmap, RAA215300_INT_MASK_2, RAA215300_INT_MASK_2_ALL);
+ regmap_write(regmap, RAA215300_INT_MASK_3, RAA215300_INT_MASK_3_ALL);
+ regmap_write(regmap, RAA215300_INT_MASK_4, RAA215300_INT_MASK_4_ALL);
+ regmap_write(regmap, RAA215300_INT_MASK_6, RAA215300_INT_MASK_6_ALL);
+
+ ret = raa215300_clk_present(client, xin_name);
+ if (ret < 0) {
+ return ret;
+ } else if (!ret) {
+ ret = raa215300_clk_present(client, clkin_name);
+ if (ret < 0)
+ return ret;
+
+ clk_name = clkin_name;
+ }
+
+ if (ret) {
+ char *name = pmic_version >= 0x12 ? "isl1208" : "raa215300_a0";
+ struct device_node *np = client->dev.of_node;
+ u32 addr = RAA215300_RTC_DEFAULT_ADDR;
+ struct i2c_board_info info = {};
+ struct i2c_client *rtc_client;
+ ssize_t size;
+
+ clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 32000);
+ clk_register_clkdev(clk, clk_name, NULL);
+
+ if (np) {
+ int i;
+
+ i = of_property_match_string(np, "reg-names", "rtc");
+ if (i >= 0)
+ of_property_read_u32_index(np, "reg", i, &addr);
+ }
+
+ info.addr = addr;
+ if (client->irq > 0)
+ info.irq = client->irq;
+
+ size = strscpy(info.type, name, sizeof(info.type));
+ if (size < 0)
+ return dev_err_probe(dev, size,
+ "Invalid device name: %s\n", name);
+
+ /* Enable RTC block */
+ regmap_update_bits(regmap, RAA215300_REG_BLOCK_EN,
+ RAA215300_REG_BLOCK_EN_RTC_EN,
+ RAA215300_REG_BLOCK_EN_RTC_EN);
+
+ rtc_client = i2c_new_client_device(client->adapter, &info);
+ if (IS_ERR(rtc_client))
+ return PTR_ERR(rtc_client);
+
+ ret = devm_add_action_or_reset(dev,
+ raa215300_rtc_unregister_device,
+ rtc_client);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id raa215300_dt_match[] = {
+ { .compatible = "renesas,raa215300" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, raa215300_dt_match);
+
+static struct i2c_driver raa215300_i2c_driver = {
+ .driver = {
+ .name = "raa215300",
+ .of_match_table = raa215300_dt_match,
+ },
+ .probe_new = raa215300_i2c_probe,
+};
+module_i2c_driver(raa215300_i2c_driver);
+
+MODULE_DESCRIPTION("Renesas RAA215300 PMIC driver");
+MODULE_AUTHOR("Fabrizio Castro <fabrizio.castro.jz@renesas.com>");
+MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
+MODULE_LICENSE("GPL");