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path: root/drivers/mfd/tps65910.c
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Diffstat (limited to 'drivers/mfd/tps65910.c')
-rw-r--r--drivers/mfd/tps65910.c547
1 files changed, 547 insertions, 0 deletions
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
new file mode 100644
index 0000000000..41408df171
--- /dev/null
+++ b/drivers/mfd/tps65910.c
@@ -0,0 +1,547 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * tps65910.c -- TI TPS6591x chip family multi-function driver
+ *
+ * Copyright 2010 Texas Instruments Inc.
+ *
+ * Author: Graeme Gregory <gg@slimlogic.co.uk>
+ * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
+ */
+
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/mfd/core.h>
+#include <linux/regmap.h>
+#include <linux/mfd/tps65910.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+static const struct resource rtc_resources[] = {
+ {
+ .start = TPS65910_IRQ_RTC_ALARM,
+ .end = TPS65910_IRQ_RTC_ALARM,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static const struct mfd_cell tps65910s[] = {
+ {
+ .name = "tps65910-gpio",
+ },
+ {
+ .name = "tps65910-pmic",
+ },
+ {
+ .name = "tps65910-rtc",
+ .num_resources = ARRAY_SIZE(rtc_resources),
+ .resources = &rtc_resources[0],
+ },
+ {
+ .name = "tps65910-power",
+ },
+};
+
+
+static const struct regmap_irq tps65911_irqs[] = {
+ /* INT_STS */
+ [TPS65911_IRQ_PWRHOLD_F] = {
+ .mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_VBAT_VMHI] = {
+ .mask = INT_MSK_VMBHI_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_PWRON] = {
+ .mask = INT_MSK_PWRON_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_PWRON_LP] = {
+ .mask = INT_MSK_PWRON_LP_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_PWRHOLD_R] = {
+ .mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_HOTDIE] = {
+ .mask = INT_MSK_HOTDIE_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_RTC_ALARM] = {
+ .mask = INT_MSK_RTC_ALARM_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65911_IRQ_RTC_PERIOD] = {
+ .mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+
+ /* INT_STS2 */
+ [TPS65911_IRQ_GPIO0_R] = {
+ .mask = INT_MSK2_GPIO0_R_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO0_F] = {
+ .mask = INT_MSK2_GPIO0_F_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO1_R] = {
+ .mask = INT_MSK2_GPIO1_R_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO1_F] = {
+ .mask = INT_MSK2_GPIO1_F_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO2_R] = {
+ .mask = INT_MSK2_GPIO2_R_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO2_F] = {
+ .mask = INT_MSK2_GPIO2_F_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO3_R] = {
+ .mask = INT_MSK2_GPIO3_R_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65911_IRQ_GPIO3_F] = {
+ .mask = INT_MSK2_GPIO3_F_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+
+ /* INT_STS2 */
+ [TPS65911_IRQ_GPIO4_R] = {
+ .mask = INT_MSK3_GPIO4_R_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_GPIO4_F] = {
+ .mask = INT_MSK3_GPIO4_F_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_GPIO5_R] = {
+ .mask = INT_MSK3_GPIO5_R_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_GPIO5_F] = {
+ .mask = INT_MSK3_GPIO5_F_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_WTCHDG] = {
+ .mask = INT_MSK3_WTCHDG_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_VMBCH2_H] = {
+ .mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_VMBCH2_L] = {
+ .mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+ [TPS65911_IRQ_PWRDN] = {
+ .mask = INT_MSK3_PWRDN_IT_MSK_MASK,
+ .reg_offset = 2,
+ },
+};
+
+static const struct regmap_irq tps65910_irqs[] = {
+ /* INT_STS */
+ [TPS65910_IRQ_VBAT_VMBDCH] = {
+ .mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_VBAT_VMHI] = {
+ .mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_PWRON] = {
+ .mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_PWRON_LP] = {
+ .mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_PWRHOLD] = {
+ .mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_HOTDIE] = {
+ .mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_RTC_ALARM] = {
+ .mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+ [TPS65910_IRQ_RTC_PERIOD] = {
+ .mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK,
+ .reg_offset = 0,
+ },
+
+ /* INT_STS2 */
+ [TPS65910_IRQ_GPIO_R] = {
+ .mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+ [TPS65910_IRQ_GPIO_F] = {
+ .mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK,
+ .reg_offset = 1,
+ },
+};
+
+static struct regmap_irq_chip tps65911_irq_chip = {
+ .name = "tps65910",
+ .irqs = tps65911_irqs,
+ .num_irqs = ARRAY_SIZE(tps65911_irqs),
+ .num_regs = 3,
+ .irq_reg_stride = 2,
+ .status_base = TPS65910_INT_STS,
+ .mask_base = TPS65910_INT_MSK,
+ .ack_base = TPS65910_INT_STS,
+};
+
+static struct regmap_irq_chip tps65910_irq_chip = {
+ .name = "tps65910",
+ .irqs = tps65910_irqs,
+ .num_irqs = ARRAY_SIZE(tps65910_irqs),
+ .num_regs = 2,
+ .irq_reg_stride = 2,
+ .status_base = TPS65910_INT_STS,
+ .mask_base = TPS65910_INT_MSK,
+ .ack_base = TPS65910_INT_STS,
+};
+
+static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
+ struct tps65910_platform_data *pdata)
+{
+ int ret;
+ static struct regmap_irq_chip *tps6591x_irqs_chip;
+
+ if (!irq) {
+ dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
+ return -EINVAL;
+ }
+
+ if (!pdata) {
+ dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
+ return -EINVAL;
+ }
+
+ switch (tps65910_chip_id(tps65910)) {
+ case TPS65910:
+ tps6591x_irqs_chip = &tps65910_irq_chip;
+ break;
+ case TPS65911:
+ tps6591x_irqs_chip = &tps65911_irq_chip;
+ break;
+ }
+
+ tps65910->chip_irq = irq;
+ ret = devm_regmap_add_irq_chip(tps65910->dev, tps65910->regmap,
+ tps65910->chip_irq,
+ IRQF_ONESHOT, pdata->irq_base,
+ tps6591x_irqs_chip, &tps65910->irq_data);
+ if (ret < 0) {
+ dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
+ tps65910->chip_irq = 0;
+ }
+ return ret;
+}
+
+static bool is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ struct tps65910 *tps65910 = dev_get_drvdata(dev);
+
+ /*
+ * Caching all regulator registers.
+ * All regualator register address range is same for
+ * TPS65910 and TPS65911
+ */
+ if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
+ /* Check for non-existing register */
+ if (tps65910_chip_id(tps65910) == TPS65910)
+ if ((reg == TPS65911_VDDCTRL_OP) ||
+ (reg == TPS65911_VDDCTRL_SR))
+ return true;
+ return false;
+ }
+ return true;
+}
+
+static const struct regmap_config tps65910_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_reg = is_volatile_reg,
+ .max_register = TPS65910_MAX_REGISTER - 1,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int tps65910_ck32k_init(struct tps65910 *tps65910,
+ struct tps65910_board *pmic_pdata)
+{
+ int ret;
+
+ if (!pmic_pdata->en_ck32k_xtal)
+ return 0;
+
+ ret = regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL,
+ DEVCTRL_CK32K_CTRL_MASK);
+ if (ret < 0) {
+ dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tps65910_sleepinit(struct tps65910 *tps65910,
+ struct tps65910_board *pmic_pdata)
+{
+ struct device *dev;
+ int ret;
+
+ if (!pmic_pdata->en_dev_slp)
+ return 0;
+
+ dev = tps65910->dev;
+
+ /* enabling SLEEP device state */
+ ret = regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL,
+ DEVCTRL_DEV_SLP_MASK);
+ if (ret < 0) {
+ dev_err(dev, "set dev_slp failed: %d\n", ret);
+ goto err_sleep_init;
+ }
+
+ if (pmic_pdata->slp_keepon.therm_keepon) {
+ ret = regmap_set_bits(tps65910->regmap,
+ TPS65910_SLEEP_KEEP_RES_ON,
+ SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
+ if (ret < 0) {
+ dev_err(dev, "set therm_keepon failed: %d\n", ret);
+ goto disable_dev_slp;
+ }
+ }
+
+ if (pmic_pdata->slp_keepon.clkout32k_keepon) {
+ ret = regmap_set_bits(tps65910->regmap,
+ TPS65910_SLEEP_KEEP_RES_ON,
+ SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
+ if (ret < 0) {
+ dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
+ goto disable_dev_slp;
+ }
+ }
+
+ if (pmic_pdata->slp_keepon.i2chs_keepon) {
+ ret = regmap_set_bits(tps65910->regmap,
+ TPS65910_SLEEP_KEEP_RES_ON,
+ SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
+ if (ret < 0) {
+ dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
+ goto disable_dev_slp;
+ }
+ }
+
+ return 0;
+
+disable_dev_slp:
+ regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL,
+ DEVCTRL_DEV_SLP_MASK);
+
+err_sleep_init:
+ return ret;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id tps65910_of_match[] = {
+ { .compatible = "ti,tps65910", .data = (void *)TPS65910},
+ { .compatible = "ti,tps65911", .data = (void *)TPS65911},
+ { },
+};
+
+static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
+ unsigned long *chip_id)
+{
+ struct device_node *np = client->dev.of_node;
+ struct tps65910_board *board_info;
+ unsigned int prop;
+ const struct of_device_id *match;
+ int ret;
+
+ match = of_match_device(tps65910_of_match, &client->dev);
+ if (!match) {
+ dev_err(&client->dev, "Failed to find matching dt id\n");
+ return NULL;
+ }
+
+ *chip_id = (unsigned long)match->data;
+
+ board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
+ GFP_KERNEL);
+ if (!board_info)
+ return NULL;
+
+ ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
+ if (!ret)
+ board_info->vmbch_threshold = prop;
+
+ ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
+ if (!ret)
+ board_info->vmbch2_threshold = prop;
+
+ prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
+ board_info->en_ck32k_xtal = prop;
+
+ prop = of_property_read_bool(np, "ti,sleep-enable");
+ board_info->en_dev_slp = prop;
+
+ prop = of_property_read_bool(np, "ti,sleep-keep-therm");
+ board_info->slp_keepon.therm_keepon = prop;
+
+ prop = of_property_read_bool(np, "ti,sleep-keep-ck32k");
+ board_info->slp_keepon.clkout32k_keepon = prop;
+
+ prop = of_property_read_bool(np, "ti,sleep-keep-hsclk");
+ board_info->slp_keepon.i2chs_keepon = prop;
+
+ board_info->irq = client->irq;
+ board_info->irq_base = -1;
+ board_info->pm_off = of_property_read_bool(np,
+ "ti,system-power-controller");
+
+ return board_info;
+}
+#else
+static inline
+struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
+ unsigned long *chip_id)
+{
+ return NULL;
+}
+#endif
+
+static struct i2c_client *tps65910_i2c_client;
+static void tps65910_power_off(void)
+{
+ struct tps65910 *tps65910;
+
+ tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
+
+ regmap_update_bits(tps65910->regmap, TPS65910_DEVCTRL,
+ DEVCTRL_DEV_OFF_MASK | DEVCTRL_DEV_ON_MASK,
+ DEVCTRL_DEV_OFF_MASK);
+}
+
+static int tps65910_i2c_probe(struct i2c_client *i2c)
+{
+ const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
+ struct tps65910 *tps65910;
+ struct tps65910_board *pmic_plat_data;
+ struct tps65910_board *of_pmic_plat_data = NULL;
+ struct tps65910_platform_data *init_data;
+ unsigned long chip_id = id->driver_data;
+ int ret;
+
+ pmic_plat_data = dev_get_platdata(&i2c->dev);
+
+ if (!pmic_plat_data && i2c->dev.of_node) {
+ pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
+ of_pmic_plat_data = pmic_plat_data;
+ }
+
+ if (!pmic_plat_data)
+ return -EINVAL;
+
+ init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
+ if (init_data == NULL)
+ return -ENOMEM;
+
+ tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
+ if (tps65910 == NULL)
+ return -ENOMEM;
+
+ tps65910->of_plat_data = of_pmic_plat_data;
+ i2c_set_clientdata(i2c, tps65910);
+ tps65910->dev = &i2c->dev;
+ tps65910->i2c_client = i2c;
+ tps65910->id = chip_id;
+
+ /* Work around silicon erratum SWCZ010: the tps65910 may miss the
+ * first I2C transfer. So issue a dummy transfer before the first
+ * real transfer.
+ */
+ i2c_master_send(i2c, "", 1);
+ tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
+ if (IS_ERR(tps65910->regmap)) {
+ ret = PTR_ERR(tps65910->regmap);
+ dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
+ return ret;
+ }
+
+ init_data->irq = pmic_plat_data->irq;
+ init_data->irq_base = pmic_plat_data->irq_base;
+
+ tps65910_irq_init(tps65910, init_data->irq, init_data);
+ tps65910_ck32k_init(tps65910, pmic_plat_data);
+ tps65910_sleepinit(tps65910, pmic_plat_data);
+
+ if (pmic_plat_data->pm_off && !pm_power_off) {
+ /*
+ * The PWR_OFF bit needs to be set separately, before
+ * transitioning to the OFF state. It enables the "sequential"
+ * power-off mode on TPS65911, it's a NO-OP on TPS65910.
+ */
+ ret = regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL,
+ DEVCTRL_PWR_OFF_MASK);
+ if (ret) {
+ dev_err(&i2c->dev, "failed to set power-off mode: %d\n",
+ ret);
+ return ret;
+ }
+
+ tps65910_i2c_client = i2c;
+ pm_power_off = tps65910_power_off;
+ }
+
+ ret = devm_mfd_add_devices(tps65910->dev, -1,
+ tps65910s, ARRAY_SIZE(tps65910s),
+ NULL, 0,
+ regmap_irq_get_domain(tps65910->irq_data));
+ if (ret < 0) {
+ dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static const struct i2c_device_id tps65910_i2c_id[] = {
+ { "tps65910", TPS65910 },
+ { "tps65911", TPS65911 },
+ { }
+};
+
+static struct i2c_driver tps65910_i2c_driver = {
+ .driver = {
+ .name = "tps65910",
+ .of_match_table = of_match_ptr(tps65910_of_match),
+ },
+ .probe = tps65910_i2c_probe,
+ .id_table = tps65910_i2c_id,
+};
+
+static int __init tps65910_i2c_init(void)
+{
+ return i2c_add_driver(&tps65910_i2c_driver);
+}
+/* init early so consumer devices can complete system boot */
+subsys_initcall(tps65910_i2c_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 09:49:27 +0000