diff options
Diffstat (limited to 'drivers/mfd/qcom-pm8008.c')
| -rw-r--r-- | drivers/mfd/qcom-pm8008.c | 170 |
1 files changed, 118 insertions, 52 deletions
diff --git a/drivers/mfd/qcom-pm8008.c b/drivers/mfd/qcom-pm8008.c index 3ac3742f438b..60204cc9a2dc 100644 --- a/drivers/mfd/qcom-pm8008.c +++ b/drivers/mfd/qcom-pm8008.c @@ -4,10 +4,13 @@ */ #include <linux/bitops.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> +#include <linux/ioport.h> #include <linux/irq.h> #include <linux/irqdomain.h> +#include <linux/mfd/core.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> @@ -15,8 +18,6 @@ #include <linux/regmap.h> #include <linux/slab.h> -#include <dt-bindings/mfd/qcom-pm8008.h> - #define I2C_INTR_STATUS_BASE 0x0550 #define INT_RT_STS_OFFSET 0x10 #define INT_SET_TYPE_OFFSET 0x11 @@ -37,34 +38,54 @@ enum { #define PM8008_PERIPH_0_BASE 0x900 #define PM8008_PERIPH_1_BASE 0x2400 -#define PM8008_PERIPH_2_BASE 0xC000 -#define PM8008_PERIPH_3_BASE 0xC100 +#define PM8008_PERIPH_2_BASE 0xc000 +#define PM8008_PERIPH_3_BASE 0xc100 #define PM8008_TEMP_ALARM_ADDR PM8008_PERIPH_1_BASE #define PM8008_GPIO1_ADDR PM8008_PERIPH_2_BASE #define PM8008_GPIO2_ADDR PM8008_PERIPH_3_BASE +/* PM8008 IRQ numbers */ +#define PM8008_IRQ_MISC_UVLO 0 +#define PM8008_IRQ_MISC_OVLO 1 +#define PM8008_IRQ_MISC_OTST2 2 +#define PM8008_IRQ_MISC_OTST3 3 +#define PM8008_IRQ_MISC_LDO_OCP 4 +#define PM8008_IRQ_TEMP_ALARM 5 +#define PM8008_IRQ_GPIO1 6 +#define PM8008_IRQ_GPIO2 7 + enum { SET_TYPE_INDEX, POLARITY_HI_INDEX, POLARITY_LO_INDEX, }; -static unsigned int pm8008_config_regs[] = { +static const unsigned int pm8008_config_regs[] = { INT_SET_TYPE_OFFSET, INT_POL_HIGH_OFFSET, INT_POL_LOW_OFFSET, }; -static struct regmap_irq pm8008_irqs[] = { - REGMAP_IRQ_REG(PM8008_IRQ_MISC_UVLO, PM8008_MISC, BIT(0)), - REGMAP_IRQ_REG(PM8008_IRQ_MISC_OVLO, PM8008_MISC, BIT(1)), - REGMAP_IRQ_REG(PM8008_IRQ_MISC_OTST2, PM8008_MISC, BIT(2)), - REGMAP_IRQ_REG(PM8008_IRQ_MISC_OTST3, PM8008_MISC, BIT(3)), - REGMAP_IRQ_REG(PM8008_IRQ_MISC_LDO_OCP, PM8008_MISC, BIT(4)), - REGMAP_IRQ_REG(PM8008_IRQ_TEMP_ALARM, PM8008_TEMP_ALARM, BIT(0)), - REGMAP_IRQ_REG(PM8008_IRQ_GPIO1, PM8008_GPIO1, BIT(0)), - REGMAP_IRQ_REG(PM8008_IRQ_GPIO2, PM8008_GPIO2, BIT(0)), +#define _IRQ(_irq, _off, _mask, _types) \ + [_irq] = { \ + .reg_offset = (_off), \ + .mask = (_mask), \ + .type = { \ + .type_reg_offset = (_off), \ + .types_supported = (_types), \ + }, \ + } + +static const struct regmap_irq pm8008_irqs[] = { + _IRQ(PM8008_IRQ_MISC_UVLO, PM8008_MISC, BIT(0), IRQ_TYPE_EDGE_RISING), + _IRQ(PM8008_IRQ_MISC_OVLO, PM8008_MISC, BIT(1), IRQ_TYPE_EDGE_RISING), + _IRQ(PM8008_IRQ_MISC_OTST2, PM8008_MISC, BIT(2), IRQ_TYPE_EDGE_RISING), + _IRQ(PM8008_IRQ_MISC_OTST3, PM8008_MISC, BIT(3), IRQ_TYPE_EDGE_RISING), + _IRQ(PM8008_IRQ_MISC_LDO_OCP, PM8008_MISC, BIT(4), IRQ_TYPE_EDGE_RISING), + _IRQ(PM8008_IRQ_TEMP_ALARM, PM8008_TEMP_ALARM,BIT(0), IRQ_TYPE_SENSE_MASK), + _IRQ(PM8008_IRQ_GPIO1, PM8008_GPIO1, BIT(0), IRQ_TYPE_SENSE_MASK), + _IRQ(PM8008_IRQ_GPIO2, PM8008_GPIO2, BIT(0), IRQ_TYPE_SENSE_MASK), }; static const unsigned int pm8008_periph_base[] = { @@ -118,8 +139,8 @@ static int pm8008_set_type_config(unsigned int **buf, unsigned int type, return 0; } -static struct regmap_irq_chip pm8008_irq_chip = { - .name = "pm8008_irq", +static const struct regmap_irq_chip pm8008_irq_chip = { + .name = "pm8008", .main_status = I2C_INTR_STATUS_BASE, .num_main_regs = 1, .irqs = pm8008_irqs, @@ -137,62 +158,106 @@ static struct regmap_irq_chip pm8008_irq_chip = { .get_irq_reg = pm8008_get_irq_reg, }; -static struct regmap_config qcom_mfd_regmap_cfg = { +static const struct regmap_config qcom_mfd_regmap_cfg = { + .name = "primary", .reg_bits = 16, .val_bits = 8, - .max_register = 0xFFFF, + .max_register = 0xffff, }; -static int pm8008_probe_irq_peripherals(struct device *dev, - struct regmap *regmap, - int client_irq) -{ - int rc, i; - struct regmap_irq_type *type; - struct regmap_irq_chip_data *irq_data; - - for (i = 0; i < ARRAY_SIZE(pm8008_irqs); i++) { - type = &pm8008_irqs[i].type; +static const struct regmap_config pm8008_regmap_cfg_2 = { + .name = "secondary", + .reg_bits = 16, + .val_bits = 8, + .max_register = 0xffff, +}; - type->type_reg_offset = pm8008_irqs[i].reg_offset; +static const struct resource pm8008_temp_res[] = { + DEFINE_RES_MEM(PM8008_TEMP_ALARM_ADDR, 0x100), + DEFINE_RES_IRQ(PM8008_IRQ_TEMP_ALARM), +}; - if (type->type_reg_offset == PM8008_MISC) - type->types_supported = IRQ_TYPE_EDGE_RISING; - else - type->types_supported = (IRQ_TYPE_EDGE_BOTH | - IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW); - } +static const struct mfd_cell pm8008_cells[] = { + MFD_CELL_NAME("pm8008-regulator"), + MFD_CELL_RES("qpnp-temp-alarm", pm8008_temp_res), + MFD_CELL_NAME("pm8008-gpio"), +}; - rc = devm_regmap_add_irq_chip(dev, regmap, client_irq, - IRQF_SHARED, 0, &pm8008_irq_chip, &irq_data); - if (rc) { - dev_err(dev, "Failed to add IRQ chip: %d\n", rc); - return rc; - } +static void devm_irq_domain_fwnode_release(void *data) +{ + struct fwnode_handle *fwnode = data; - return 0; + irq_domain_free_fwnode(fwnode); } static int pm8008_probe(struct i2c_client *client) { - int rc; - struct device *dev; - struct regmap *regmap; + struct regmap_irq_chip_data *irq_data; + struct device *dev = &client->dev; + struct regmap *regmap, *regmap2; + struct fwnode_handle *fwnode; + struct i2c_client *dummy; + struct gpio_desc *reset; + char *name; + int ret; + + dummy = devm_i2c_new_dummy_device(dev, client->adapter, client->addr + 1); + if (IS_ERR(dummy)) { + ret = PTR_ERR(dummy); + dev_err(dev, "failed to claim second address: %d\n", ret); + return ret; + } + + regmap2 = devm_regmap_init_i2c(dummy, &qcom_mfd_regmap_cfg); + if (IS_ERR(regmap2)) + return PTR_ERR(regmap2); + + ret = regmap_attach_dev(dev, regmap2, &pm8008_regmap_cfg_2); + if (ret) + return ret; - dev = &client->dev; + /* Default regmap must be attached last. */ regmap = devm_regmap_init_i2c(client, &qcom_mfd_regmap_cfg); if (IS_ERR(regmap)) return PTR_ERR(regmap); - i2c_set_clientdata(client, regmap); + reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(reset)) + return PTR_ERR(reset); - if (of_property_read_bool(dev->of_node, "interrupt-controller")) { - rc = pm8008_probe_irq_peripherals(dev, regmap, client->irq); - if (rc) - dev_err(dev, "Failed to probe irq periphs: %d\n", rc); + /* + * The PMIC does not appear to require a post-reset delay, but wait + * for a millisecond for now anyway. + */ + usleep_range(1000, 2000); + + name = devm_kasprintf(dev, GFP_KERNEL, "%pOF-internal", dev->of_node); + if (!name) + return -ENOMEM; + + name = strreplace(name, '/', ':'); + + fwnode = irq_domain_alloc_named_fwnode(name); + if (!fwnode) + return -ENOMEM; + + ret = devm_add_action_or_reset(dev, devm_irq_domain_fwnode_release, fwnode); + if (ret) + return ret; + + ret = devm_regmap_add_irq_chip_fwnode(dev, fwnode, regmap, client->irq, + IRQF_SHARED, 0, &pm8008_irq_chip, &irq_data); + if (ret) { + dev_err(dev, "failed to add IRQ chip: %d\n", ret); + return ret; } - return devm_of_platform_populate(dev); + /* Needed by GPIO driver. */ + dev_set_drvdata(dev, regmap_irq_get_domain(irq_data)); + + return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, pm8008_cells, + ARRAY_SIZE(pm8008_cells), NULL, 0, + regmap_irq_get_domain(irq_data)); } static const struct of_device_id pm8008_match[] = { @@ -210,4 +275,5 @@ static struct i2c_driver pm8008_mfd_driver = { }; module_i2c_driver(pm8008_mfd_driver); +MODULE_DESCRIPTION("QCOM PM8008 Power Management IC driver"); MODULE_LICENSE("GPL v2"); |