diff options
Diffstat (limited to 'drivers/mfd/rohm-bd96801.c')
| -rw-r--r-- | drivers/mfd/rohm-bd96801.c | 793 |
1 files changed, 793 insertions, 0 deletions
diff --git a/drivers/mfd/rohm-bd96801.c b/drivers/mfd/rohm-bd96801.c new file mode 100644 index 000000000000..66fa017ad568 --- /dev/null +++ b/drivers/mfd/rohm-bd96801.c @@ -0,0 +1,793 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2024 ROHM Semiconductors + * + * ROHM BD96801 PMIC driver + * + * This version of the "BD86801 scalable PMIC"'s driver supports only very + * basic set of the PMIC features. + * Most notably, there is no support for the configurations which should + * be done when the PMIC is in STBY mode. + * + * Being able to reliably do the configurations like changing the + * regulator safety limits (like limits for the over/under -voltages, over + * current, thermal protection) would require the configuring driver to be + * synchronized with entity causing the PMIC state transitions. Eg, one + * should be able to ensure the PMIC is in STBY state when the + * configurations are applied to the hardware. How and when the PMIC state + * transitions are to be done is likely to be very system specific, as will + * be the need to configure these safety limits. Hence it's not simple to + * come up with a generic solution. + * + * Users who require the STBY state configurations can have a look at the + * original RFC: + * https://lore.kernel.org/all/cover.1712920132.git.mazziesaccount@gmail.com/ + * which implements some of the safety limit configurations - but leaves the + * state change handling and synchronization to be implemented. + * + * It would be great to hear (and receive a patch!) if you implement the + * STBY configuration support or a proper fix in your downstream driver ;) + */ + +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/property.h> +#include <linux/regmap.h> +#include <linux/types.h> + +#include <linux/mfd/rohm-bd96801.h> +#include <linux/mfd/rohm-bd96802.h> +#include <linux/mfd/rohm-generic.h> + +struct bd968xx { + const struct resource *errb_irqs; + const struct resource *intb_irqs; + int num_errb_irqs; + int num_intb_irqs; + const struct regmap_irq_chip *errb_irq_chip; + const struct regmap_irq_chip *intb_irq_chip; + const struct regmap_config *regmap_config; + struct mfd_cell *cells; + int num_cells; + int unlock_reg; + int unlock_val; +}; + +static const struct resource bd96801_reg_errb_irqs[] = { + DEFINE_RES_IRQ_NAMED(BD96801_OTP_ERR_STAT, "otp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_DBIST_ERR_STAT, "dbist-err"), + DEFINE_RES_IRQ_NAMED(BD96801_EEP_ERR_STAT, "eep-err"), + DEFINE_RES_IRQ_NAMED(BD96801_ABIST_ERR_STAT, "abist-err"), + DEFINE_RES_IRQ_NAMED(BD96801_PRSTB_ERR_STAT, "prstb-err"), + DEFINE_RES_IRQ_NAMED(BD96801_DRMOS1_ERR_STAT, "drmoserr1"), + DEFINE_RES_IRQ_NAMED(BD96801_DRMOS2_ERR_STAT, "drmoserr2"), + DEFINE_RES_IRQ_NAMED(BD96801_SLAVE_ERR_STAT, "slave-err"), + DEFINE_RES_IRQ_NAMED(BD96801_VREF_ERR_STAT, "vref-err"), + DEFINE_RES_IRQ_NAMED(BD96801_TSD_ERR_STAT, "tsd"), + DEFINE_RES_IRQ_NAMED(BD96801_UVLO_ERR_STAT, "uvlo-err"), + DEFINE_RES_IRQ_NAMED(BD96801_OVLO_ERR_STAT, "ovlo-err"), + DEFINE_RES_IRQ_NAMED(BD96801_OSC_ERR_STAT, "osc-err"), + DEFINE_RES_IRQ_NAMED(BD96801_PON_ERR_STAT, "pon-err"), + DEFINE_RES_IRQ_NAMED(BD96801_POFF_ERR_STAT, "poff-err"), + DEFINE_RES_IRQ_NAMED(BD96801_CMD_SHDN_ERR_STAT, "cmd-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_INT_PRSTB_WDT_ERR, "bd96801-prstb-wdt-err"), + DEFINE_RES_IRQ_NAMED(BD96801_INT_CHIP_IF_ERR, "bd96801-chip-if-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_INT_SHDN_ERR_STAT, "int-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_PVIN_ERR_STAT, "buck1-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OVP_ERR_STAT, "buck1-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_UVP_ERR_STAT, "buck1-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_SHDN_ERR_STAT, "buck1-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_PVIN_ERR_STAT, "buck2-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_OVP_ERR_STAT, "buck2-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_UVP_ERR_STAT, "buck2-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_SHDN_ERR_STAT, "buck2-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_PVIN_ERR_STAT, "buck3-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_OVP_ERR_STAT, "buck3-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_UVP_ERR_STAT, "buck3-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_SHDN_ERR_STAT, "buck3-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_PVIN_ERR_STAT, "buck4-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_OVP_ERR_STAT, "buck4-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_UVP_ERR_STAT, "buck4-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_SHDN_ERR_STAT, "buck4-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_PVIN_ERR_STAT, "ldo5-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_OVP_ERR_STAT, "ldo5-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_UVP_ERR_STAT, "ldo5-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_SHDN_ERR_STAT, "ldo5-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_PVIN_ERR_STAT, "ldo6-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_OVP_ERR_STAT, "ldo6-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_UVP_ERR_STAT, "ldo6-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_SHDN_ERR_STAT, "ldo6-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_PVIN_ERR_STAT, "ldo7-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_OVP_ERR_STAT, "ldo7-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_UVP_ERR_STAT, "ldo7-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_SHDN_ERR_STAT, "ldo7-shdn-err"), +}; + +static const struct resource bd96802_reg_errb_irqs[] = { + DEFINE_RES_IRQ_NAMED(BD96802_OTP_ERR_STAT, "otp-err"), + DEFINE_RES_IRQ_NAMED(BD96802_DBIST_ERR_STAT, "dbist-err"), + DEFINE_RES_IRQ_NAMED(BD96802_EEP_ERR_STAT, "eep-err"), + DEFINE_RES_IRQ_NAMED(BD96802_ABIST_ERR_STAT, "abist-err"), + DEFINE_RES_IRQ_NAMED(BD96802_PRSTB_ERR_STAT, "prstb-err"), + DEFINE_RES_IRQ_NAMED(BD96802_DRMOS1_ERR_STAT, "drmoserr1"), + DEFINE_RES_IRQ_NAMED(BD96802_DRMOS1_ERR_STAT, "drmoserr2"), + DEFINE_RES_IRQ_NAMED(BD96802_SLAVE_ERR_STAT, "slave-err"), + DEFINE_RES_IRQ_NAMED(BD96802_VREF_ERR_STAT, "vref-err"), + DEFINE_RES_IRQ_NAMED(BD96802_TSD_ERR_STAT, "tsd"), + DEFINE_RES_IRQ_NAMED(BD96802_UVLO_ERR_STAT, "uvlo-err"), + DEFINE_RES_IRQ_NAMED(BD96802_OVLO_ERR_STAT, "ovlo-err"), + DEFINE_RES_IRQ_NAMED(BD96802_OSC_ERR_STAT, "osc-err"), + DEFINE_RES_IRQ_NAMED(BD96802_PON_ERR_STAT, "pon-err"), + DEFINE_RES_IRQ_NAMED(BD96802_POFF_ERR_STAT, "poff-err"), + DEFINE_RES_IRQ_NAMED(BD96802_CMD_SHDN_ERR_STAT, "cmd-shdn-err"), + DEFINE_RES_IRQ_NAMED(BD96802_INT_SHDN_ERR_STAT, "int-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_PVIN_ERR_STAT, "buck1-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_OVP_ERR_STAT, "buck1-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_UVP_ERR_STAT, "buck1-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_SHDN_ERR_STAT, "buck1-shdn-err"), + + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_PVIN_ERR_STAT, "buck2-pvin-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_OVP_ERR_STAT, "buck2-ovp-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_UVP_ERR_STAT, "buck2-uvp-err"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_SHDN_ERR_STAT, "buck2-shdn-err"), +}; + +static const struct resource bd96801_reg_intb_irqs[] = { + DEFINE_RES_IRQ_NAMED(BD96801_TW_STAT, "core-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OCPH_STAT, "buck1-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OCPL_STAT, "buck1-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OCPN_STAT, "buck1-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OVD_STAT, "buck1-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_UVD_STAT, "buck1-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_TW_CH_STAT, "buck1-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_OCPH_STAT, "buck2-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_OCPL_STAT, "buck2-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_OCPN_STAT, "buck2-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_OVD_STAT, "buck2-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_UVD_STAT, "buck2-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK2_TW_CH_STAT, "buck2-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_OCPH_STAT, "buck3-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_OCPL_STAT, "buck3-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_OCPN_STAT, "buck3-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_OVD_STAT, "buck3-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_UVD_STAT, "buck3-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK3_TW_CH_STAT, "buck3-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_OCPH_STAT, "buck4-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_OCPL_STAT, "buck4-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_OCPN_STAT, "buck4-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_OVD_STAT, "buck4-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_UVD_STAT, "buck4-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96801_BUCK4_TW_CH_STAT, "buck4-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_OCPH_STAT, "ldo5-overcurr"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_OVD_STAT, "ldo5-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO5_UVD_STAT, "ldo5-undervolt"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_OCPH_STAT, "ldo6-overcurr"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_OVD_STAT, "ldo6-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO6_UVD_STAT, "ldo6-undervolt"), + + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_OCPH_STAT, "ldo7-overcurr"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_OVD_STAT, "ldo7-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96801_LDO7_UVD_STAT, "ldo7-undervolt"), +}; + +static const struct resource bd96802_reg_intb_irqs[] = { + DEFINE_RES_IRQ_NAMED(BD96802_TW_STAT, "core-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_OCPH_STAT, "buck1-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_OCPL_STAT, "buck1-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_OCPN_STAT, "buck1-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_OVD_STAT, "buck1-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_UVD_STAT, "buck1-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK1_TW_CH_STAT, "buck1-thermal"), + + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_OCPH_STAT, "buck2-overcurr-h"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_OCPL_STAT, "buck2-overcurr-l"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_OCPN_STAT, "buck2-overcurr-n"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_OVD_STAT, "buck2-overvolt"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_UVD_STAT, "buck2-undervolt"), + DEFINE_RES_IRQ_NAMED(BD96802_BUCK2_TW_CH_STAT, "buck2-thermal"), +}; + +enum { + WDG_CELL = 0, + REGULATOR_CELL, +}; + +static struct mfd_cell bd96801_cells[] = { + [WDG_CELL] = { .name = "bd96801-wdt", }, + [REGULATOR_CELL] = { .name = "bd96801-regulator", }, +}; + +static struct mfd_cell bd96802_cells[] = { + [WDG_CELL] = { .name = "bd96801-wdt", }, + [REGULATOR_CELL] = { .name = "bd96802-regulator", }, +}; +static struct mfd_cell bd96805_cells[] = { + [WDG_CELL] = { .name = "bd96801-wdt", }, + [REGULATOR_CELL] = { .name = "bd96805-regulator", }, +}; + +static struct mfd_cell bd96806_cells[] = { + [WDG_CELL] = { .name = "bd96806-wdt", }, + [REGULATOR_CELL] = { .name = "bd96806-regulator", }, +}; + +static const struct regmap_range bd96801_volatile_ranges[] = { + /* Status registers */ + regmap_reg_range(BD96801_REG_WD_FEED, BD96801_REG_WD_FAILCOUNT), + regmap_reg_range(BD96801_REG_WD_ASK, BD96801_REG_WD_ASK), + regmap_reg_range(BD96801_REG_WD_STATUS, BD96801_REG_WD_STATUS), + regmap_reg_range(BD96801_REG_PMIC_STATE, BD96801_REG_INT_LDO7_INTB), + /* Registers which do not update value unless PMIC is in STBY */ + regmap_reg_range(BD96801_REG_SSCG_CTRL, BD96801_REG_SHD_INTB), + regmap_reg_range(BD96801_REG_BUCK_OVP, BD96801_REG_BOOT_OVERTIME), + /* + * LDO control registers have single bit (LDO MODE) which does not + * change when we write it unless PMIC is in STBY. It's safer to not + * cache it. + */ + regmap_reg_range(BD96801_LDO5_VOL_LVL_REG, BD96801_LDO7_VOL_LVL_REG), +}; + +static const struct regmap_range bd96802_volatile_ranges[] = { + /* Status regs */ + regmap_reg_range(BD96801_REG_WD_FEED, BD96801_REG_WD_FAILCOUNT), + regmap_reg_range(BD96801_REG_WD_ASK, BD96801_REG_WD_ASK), + regmap_reg_range(BD96801_REG_WD_STATUS, BD96801_REG_WD_STATUS), + regmap_reg_range(BD96801_REG_PMIC_STATE, BD96801_REG_INT_BUCK2_ERRB), + regmap_reg_range(BD96801_REG_INT_SYS_INTB, BD96801_REG_INT_BUCK2_INTB), + /* Registers which do not update value unless PMIC is in STBY */ + regmap_reg_range(BD96801_REG_SSCG_CTRL, BD96801_REG_SHD_INTB), + regmap_reg_range(BD96801_REG_BUCK_OVP, BD96801_REG_BOOT_OVERTIME), +}; + +static const struct regmap_access_table bd96801_volatile_regs = { + .yes_ranges = bd96801_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(bd96801_volatile_ranges), +}; + +static const struct regmap_access_table bd96802_volatile_regs = { + .yes_ranges = bd96802_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(bd96802_volatile_ranges), +}; + +/* + * For ERRB we need main register bit mapping as bit(0) indicates active IRQ + * in one of the first 3 sub IRQ registers, For INTB we can use default 1 to 1 + * mapping. + */ +static unsigned int bit0_offsets[] = {0, 1, 2}; /* System stat, 3 registers */ +static unsigned int bit1_offsets[] = {3}; /* Buck 1 stat */ +static unsigned int bit2_offsets[] = {4}; /* Buck 2 stat */ +static unsigned int bit3_offsets[] = {5}; /* Buck 3 stat */ +static unsigned int bit4_offsets[] = {6}; /* Buck 4 stat */ +static unsigned int bit5_offsets[] = {7}; /* LDO 5 stat */ +static unsigned int bit6_offsets[] = {8}; /* LDO 6 stat */ +static unsigned int bit7_offsets[] = {9}; /* LDO 7 stat */ + +static const struct regmap_irq_sub_irq_map bd96801_errb_sub_irq_offsets[] = { + REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets), +}; + +static const struct regmap_irq_sub_irq_map bd96802_errb_sub_irq_offsets[] = { + REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets), + REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets), +}; + +static const struct regmap_irq bd96801_errb_irqs[] = { + /* Reg 0x52 Fatal ERRB1 */ + REGMAP_IRQ_REG(BD96801_OTP_ERR_STAT, 0, BD96801_OTP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_DBIST_ERR_STAT, 0, BD96801_DBIST_ERR_MASK), + REGMAP_IRQ_REG(BD96801_EEP_ERR_STAT, 0, BD96801_EEP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_ABIST_ERR_STAT, 0, BD96801_ABIST_ERR_MASK), + REGMAP_IRQ_REG(BD96801_PRSTB_ERR_STAT, 0, BD96801_PRSTB_ERR_MASK), + REGMAP_IRQ_REG(BD96801_DRMOS1_ERR_STAT, 0, BD96801_DRMOS1_ERR_MASK), + REGMAP_IRQ_REG(BD96801_DRMOS2_ERR_STAT, 0, BD96801_DRMOS2_ERR_MASK), + REGMAP_IRQ_REG(BD96801_SLAVE_ERR_STAT, 0, BD96801_SLAVE_ERR_MASK), + /* 0x53 Fatal ERRB2 */ + REGMAP_IRQ_REG(BD96801_VREF_ERR_STAT, 1, BD96801_VREF_ERR_MASK), + REGMAP_IRQ_REG(BD96801_TSD_ERR_STAT, 1, BD96801_TSD_ERR_MASK), + REGMAP_IRQ_REG(BD96801_UVLO_ERR_STAT, 1, BD96801_UVLO_ERR_MASK), + REGMAP_IRQ_REG(BD96801_OVLO_ERR_STAT, 1, BD96801_OVLO_ERR_MASK), + REGMAP_IRQ_REG(BD96801_OSC_ERR_STAT, 1, BD96801_OSC_ERR_MASK), + REGMAP_IRQ_REG(BD96801_PON_ERR_STAT, 1, BD96801_PON_ERR_MASK), + REGMAP_IRQ_REG(BD96801_POFF_ERR_STAT, 1, BD96801_POFF_ERR_MASK), + REGMAP_IRQ_REG(BD96801_CMD_SHDN_ERR_STAT, 1, BD96801_CMD_SHDN_ERR_MASK), + /* 0x54 Fatal INTB shadowed to ERRB */ + REGMAP_IRQ_REG(BD96801_INT_PRSTB_WDT_ERR, 2, BD96801_INT_PRSTB_WDT_ERR_MASK), + REGMAP_IRQ_REG(BD96801_INT_CHIP_IF_ERR, 2, BD96801_INT_CHIP_IF_ERR_MASK), + REGMAP_IRQ_REG(BD96801_INT_SHDN_ERR_STAT, 2, BD96801_INT_SHDN_ERR_MASK), + /* Reg 0x55 BUCK1 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_BUCK1_PVIN_ERR_STAT, 3, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_OVP_ERR_STAT, 3, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_UVP_ERR_STAT, 3, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_SHDN_ERR_STAT, 3, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x56 BUCK2 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_BUCK2_PVIN_ERR_STAT, 4, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_OVP_ERR_STAT, 4, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_UVP_ERR_STAT, 4, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_SHDN_ERR_STAT, 4, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x57 BUCK3 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_BUCK3_PVIN_ERR_STAT, 5, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_OVP_ERR_STAT, 5, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_UVP_ERR_STAT, 5, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_SHDN_ERR_STAT, 5, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x58 BUCK4 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_BUCK4_PVIN_ERR_STAT, 6, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_OVP_ERR_STAT, 6, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_UVP_ERR_STAT, 6, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_SHDN_ERR_STAT, 6, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x59 LDO5 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_LDO5_PVIN_ERR_STAT, 7, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO5_OVP_ERR_STAT, 7, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO5_UVP_ERR_STAT, 7, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO5_SHDN_ERR_STAT, 7, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x5a LDO6 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_LDO6_PVIN_ERR_STAT, 8, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO6_OVP_ERR_STAT, 8, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO6_UVP_ERR_STAT, 8, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO6_SHDN_ERR_STAT, 8, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x5b LDO7 ERR IRQs */ + REGMAP_IRQ_REG(BD96801_LDO7_PVIN_ERR_STAT, 9, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO7_OVP_ERR_STAT, 9, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO7_UVP_ERR_STAT, 9, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96801_LDO7_SHDN_ERR_STAT, 9, BD96801_OUT_SHDN_ERR_MASK), +}; + +static const struct regmap_irq bd96802_errb_irqs[] = { + /* Reg 0x52 Fatal ERRB1 */ + REGMAP_IRQ_REG(BD96802_OTP_ERR_STAT, 0, BD96801_OTP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_DBIST_ERR_STAT, 0, BD96801_DBIST_ERR_MASK), + REGMAP_IRQ_REG(BD96802_EEP_ERR_STAT, 0, BD96801_EEP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_ABIST_ERR_STAT, 0, BD96801_ABIST_ERR_MASK), + REGMAP_IRQ_REG(BD96802_PRSTB_ERR_STAT, 0, BD96801_PRSTB_ERR_MASK), + REGMAP_IRQ_REG(BD96802_DRMOS1_ERR_STAT, 0, BD96801_DRMOS1_ERR_MASK), + REGMAP_IRQ_REG(BD96802_DRMOS2_ERR_STAT, 0, BD96801_DRMOS2_ERR_MASK), + REGMAP_IRQ_REG(BD96802_SLAVE_ERR_STAT, 0, BD96801_SLAVE_ERR_MASK), + /* 0x53 Fatal ERRB2 */ + REGMAP_IRQ_REG(BD96802_VREF_ERR_STAT, 1, BD96801_VREF_ERR_MASK), + REGMAP_IRQ_REG(BD96802_TSD_ERR_STAT, 1, BD96801_TSD_ERR_MASK), + REGMAP_IRQ_REG(BD96802_UVLO_ERR_STAT, 1, BD96801_UVLO_ERR_MASK), + REGMAP_IRQ_REG(BD96802_OVLO_ERR_STAT, 1, BD96801_OVLO_ERR_MASK), + REGMAP_IRQ_REG(BD96802_OSC_ERR_STAT, 1, BD96801_OSC_ERR_MASK), + REGMAP_IRQ_REG(BD96802_PON_ERR_STAT, 1, BD96801_PON_ERR_MASK), + REGMAP_IRQ_REG(BD96802_POFF_ERR_STAT, 1, BD96801_POFF_ERR_MASK), + REGMAP_IRQ_REG(BD96802_CMD_SHDN_ERR_STAT, 1, BD96801_CMD_SHDN_ERR_MASK), + /* 0x54 Fatal INTB shadowed to ERRB */ + REGMAP_IRQ_REG(BD96802_INT_SHDN_ERR_STAT, 2, BD96801_INT_SHDN_ERR_MASK), + /* Reg 0x55 BUCK1 ERR IRQs */ + REGMAP_IRQ_REG(BD96802_BUCK1_PVIN_ERR_STAT, 3, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_OVP_ERR_STAT, 3, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_UVP_ERR_STAT, 3, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_SHDN_ERR_STAT, 3, BD96801_OUT_SHDN_ERR_MASK), + /* Reg 0x56 BUCK2 ERR IRQs */ + REGMAP_IRQ_REG(BD96802_BUCK2_PVIN_ERR_STAT, 4, BD96801_OUT_PVIN_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_OVP_ERR_STAT, 4, BD96801_OUT_OVP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_UVP_ERR_STAT, 4, BD96801_OUT_UVP_ERR_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_SHDN_ERR_STAT, 4, BD96801_OUT_SHDN_ERR_MASK), +}; + +static const struct regmap_irq bd96801_intb_irqs[] = { + /* STATUS SYSTEM INTB */ + REGMAP_IRQ_REG(BD96801_TW_STAT, 0, BD96801_TW_STAT_MASK), + REGMAP_IRQ_REG(BD96801_WDT_ERR_STAT, 0, BD96801_WDT_ERR_STAT_MASK), + REGMAP_IRQ_REG(BD96801_I2C_ERR_STAT, 0, BD96801_I2C_ERR_STAT_MASK), + REGMAP_IRQ_REG(BD96801_CHIP_IF_ERR_STAT, 0, BD96801_CHIP_IF_ERR_STAT_MASK), + /* STATUS BUCK1 INTB */ + REGMAP_IRQ_REG(BD96801_BUCK1_OCPH_STAT, 1, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_OCPL_STAT, 1, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_OCPN_STAT, 1, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_OVD_STAT, 1, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_UVD_STAT, 1, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK1_TW_CH_STAT, 1, BD96801_BUCK_TW_CH_STAT_MASK), + /* BUCK 2 INTB */ + REGMAP_IRQ_REG(BD96801_BUCK2_OCPH_STAT, 2, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_OCPL_STAT, 2, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_OCPN_STAT, 2, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_OVD_STAT, 2, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_UVD_STAT, 2, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK2_TW_CH_STAT, 2, BD96801_BUCK_TW_CH_STAT_MASK), + /* BUCK 3 INTB */ + REGMAP_IRQ_REG(BD96801_BUCK3_OCPH_STAT, 3, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_OCPL_STAT, 3, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_OCPN_STAT, 3, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_OVD_STAT, 3, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_UVD_STAT, 3, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK3_TW_CH_STAT, 3, BD96801_BUCK_TW_CH_STAT_MASK), + /* BUCK 4 INTB */ + REGMAP_IRQ_REG(BD96801_BUCK4_OCPH_STAT, 4, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_OCPL_STAT, 4, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_OCPN_STAT, 4, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_OVD_STAT, 4, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_UVD_STAT, 4, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_BUCK4_TW_CH_STAT, 4, BD96801_BUCK_TW_CH_STAT_MASK), + /* LDO5 INTB */ + REGMAP_IRQ_REG(BD96801_LDO5_OCPH_STAT, 5, BD96801_LDO_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO5_OVD_STAT, 5, BD96801_LDO_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO5_UVD_STAT, 5, BD96801_LDO_UVD_STAT_MASK), + /* LDO6 INTB */ + REGMAP_IRQ_REG(BD96801_LDO6_OCPH_STAT, 6, BD96801_LDO_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO6_OVD_STAT, 6, BD96801_LDO_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO6_UVD_STAT, 6, BD96801_LDO_UVD_STAT_MASK), + /* LDO7 INTB */ + REGMAP_IRQ_REG(BD96801_LDO7_OCPH_STAT, 7, BD96801_LDO_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO7_OVD_STAT, 7, BD96801_LDO_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96801_LDO7_UVD_STAT, 7, BD96801_LDO_UVD_STAT_MASK), +}; + +static const struct regmap_irq bd96802_intb_irqs[] = { + /* STATUS SYSTEM INTB */ + REGMAP_IRQ_REG(BD96802_TW_STAT, 0, BD96801_TW_STAT_MASK), + REGMAP_IRQ_REG(BD96802_WDT_ERR_STAT, 0, BD96801_WDT_ERR_STAT_MASK), + REGMAP_IRQ_REG(BD96802_I2C_ERR_STAT, 0, BD96801_I2C_ERR_STAT_MASK), + REGMAP_IRQ_REG(BD96802_CHIP_IF_ERR_STAT, 0, BD96801_CHIP_IF_ERR_STAT_MASK), + /* STATUS BUCK1 INTB */ + REGMAP_IRQ_REG(BD96802_BUCK1_OCPH_STAT, 1, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_OCPL_STAT, 1, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_OCPN_STAT, 1, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_OVD_STAT, 1, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_UVD_STAT, 1, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK1_TW_CH_STAT, 1, BD96801_BUCK_TW_CH_STAT_MASK), + /* BUCK 2 INTB */ + REGMAP_IRQ_REG(BD96802_BUCK2_OCPH_STAT, 2, BD96801_BUCK_OCPH_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_OCPL_STAT, 2, BD96801_BUCK_OCPL_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_OCPN_STAT, 2, BD96801_BUCK_OCPN_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_OVD_STAT, 2, BD96801_BUCK_OVD_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_UVD_STAT, 2, BD96801_BUCK_UVD_STAT_MASK), + REGMAP_IRQ_REG(BD96802_BUCK2_TW_CH_STAT, 2, BD96801_BUCK_TW_CH_STAT_MASK), +}; + +/* + * The IRQ stuff is a bit hairy. The BD96801 / BD96802 provide two physical + * IRQ lines called INTB and ERRB. They share the same main status register. + * + * For ERRB, mapping from main status to sub-status is such that the + * 'global' faults are mapped to first 3 sub-status registers - and indicated + * by the first bit[0] in main status reg. + * + * Rest of the status registers are for indicating stuff for individual + * regulators, 1 sub register / regulator and 1 main status register bit / + * regulator, starting from bit[1]. + * + * Eg, regulator specific stuff has 1 to 1 mapping from main-status to sub + * registers but 'global' ERRB IRQs require mapping from main status bit[0] to + * 3 status registers. + * + * Furthermore, the BD96801 has 7 regulators where the BD96802 has only 2. + * + * INTB has only 1 sub status register for 'global' events and then own sub + * status register for each of the regulators. So, for INTB we have direct + * 1 to 1 mapping - BD96801 just having 5 register and 5 main status bits + * more than the BD96802. + * + * Sharing the main status bits could be a problem if we had both INTB and + * ERRB IRQs asserted but for different sub-status offsets. This might lead + * IRQ controller code to go read a sub status register which indicates no + * active IRQs. I assume this occurring repeteadly might lead the IRQ to be + * disabled by core as a result of repeteadly returned IRQ_NONEs. + * + * I don't consider this as a fatal problem for now because: + * a) Having ERRB asserted leads to PMIC fault state which will kill + * the SoC powered by the PMIC. (So, relevant only for potential + * case of not powering the processor with this PMIC). + * b) Having ERRB set without having respective INTB is unlikely + * (haven't actually verified this). + * + * So, let's proceed with main status enabled for both INTB and ERRB. We can + * later disable main-status usage on systems where this ever proves to be + * a problem. + */ + +static const struct regmap_irq_chip bd96801_irq_chip_errb = { + .name = "bd96801-irq-errb", + .domain_suffix = "errb", + .main_status = BD96801_REG_INT_MAIN, + .num_main_regs = 1, + .irqs = &bd96801_errb_irqs[0], + .num_irqs = ARRAY_SIZE(bd96801_errb_irqs), + .status_base = BD96801_REG_INT_SYS_ERRB1, + .mask_base = BD96801_REG_MASK_SYS_ERRB, + .ack_base = BD96801_REG_INT_SYS_ERRB1, + .init_ack_masked = true, + .num_regs = 10, + .irq_reg_stride = 1, + .sub_reg_offsets = &bd96801_errb_sub_irq_offsets[0], +}; + +static const struct regmap_irq_chip bd96802_irq_chip_errb = { + .name = "bd96802-irq-errb", + .domain_suffix = "errb", + .main_status = BD96801_REG_INT_MAIN, + .num_main_regs = 1, + .irqs = &bd96802_errb_irqs[0], + .num_irqs = ARRAY_SIZE(bd96802_errb_irqs), + .status_base = BD96801_REG_INT_SYS_ERRB1, + .mask_base = BD96801_REG_MASK_SYS_ERRB, + .ack_base = BD96801_REG_INT_SYS_ERRB1, + .init_ack_masked = true, + .num_regs = 5, + .irq_reg_stride = 1, + .sub_reg_offsets = &bd96802_errb_sub_irq_offsets[0], +}; + +static const struct regmap_irq_chip bd96801_irq_chip_intb = { + .name = "bd96801-irq-intb", + .domain_suffix = "intb", + .main_status = BD96801_REG_INT_MAIN, + .num_main_regs = 1, + .irqs = &bd96801_intb_irqs[0], + .num_irqs = ARRAY_SIZE(bd96801_intb_irqs), + .status_base = BD96801_REG_INT_SYS_INTB, + .mask_base = BD96801_REG_MASK_SYS_INTB, + .ack_base = BD96801_REG_INT_SYS_INTB, + .init_ack_masked = true, + .num_regs = 8, + .irq_reg_stride = 1, +}; + +static const struct regmap_irq_chip bd96802_irq_chip_intb = { + .name = "bd96802-irq-intb", + .domain_suffix = "intb", + .main_status = BD96801_REG_INT_MAIN, + .num_main_regs = 1, + .irqs = &bd96802_intb_irqs[0], + .num_irqs = ARRAY_SIZE(bd96802_intb_irqs), + .status_base = BD96801_REG_INT_SYS_INTB, + .mask_base = BD96801_REG_MASK_SYS_INTB, + .ack_base = BD96801_REG_INT_SYS_INTB, + .init_ack_masked = true, + .num_regs = 3, + .irq_reg_stride = 1, +}; + +static const struct regmap_config bd96801_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_table = &bd96801_volatile_regs, + .cache_type = REGCACHE_MAPLE, +}; + +static const struct regmap_config bd96802_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_table = &bd96802_volatile_regs, + .cache_type = REGCACHE_MAPLE, +}; + +static const struct bd968xx bd96801_data = { + .errb_irqs = bd96801_reg_errb_irqs, + .intb_irqs = bd96801_reg_intb_irqs, + .num_errb_irqs = ARRAY_SIZE(bd96801_reg_errb_irqs), + .num_intb_irqs = ARRAY_SIZE(bd96801_reg_intb_irqs), + .errb_irq_chip = &bd96801_irq_chip_errb, + .intb_irq_chip = &bd96801_irq_chip_intb, + .regmap_config = &bd96801_regmap_config, + .cells = bd96801_cells, + .num_cells = ARRAY_SIZE(bd96801_cells), + .unlock_reg = BD96801_LOCK_REG, + .unlock_val = BD96801_UNLOCK, +}; + +static const struct bd968xx bd96802_data = { + .errb_irqs = bd96802_reg_errb_irqs, + .intb_irqs = bd96802_reg_intb_irqs, + .num_errb_irqs = ARRAY_SIZE(bd96802_reg_errb_irqs), + .num_intb_irqs = ARRAY_SIZE(bd96802_reg_intb_irqs), + .errb_irq_chip = &bd96802_irq_chip_errb, + .intb_irq_chip = &bd96802_irq_chip_intb, + .regmap_config = &bd96802_regmap_config, + .cells = bd96802_cells, + .num_cells = ARRAY_SIZE(bd96802_cells), + .unlock_reg = BD96801_LOCK_REG, + .unlock_val = BD96801_UNLOCK, +}; + +static const struct bd968xx bd96805_data = { + .errb_irqs = bd96801_reg_errb_irqs, + .intb_irqs = bd96801_reg_intb_irqs, + .num_errb_irqs = ARRAY_SIZE(bd96801_reg_errb_irqs), + .num_intb_irqs = ARRAY_SIZE(bd96801_reg_intb_irqs), + .errb_irq_chip = &bd96801_irq_chip_errb, + .intb_irq_chip = &bd96801_irq_chip_intb, + .regmap_config = &bd96801_regmap_config, + .cells = bd96805_cells, + .num_cells = ARRAY_SIZE(bd96805_cells), + .unlock_reg = BD96801_LOCK_REG, + .unlock_val = BD96801_UNLOCK, +}; + +static struct bd968xx bd96806_data = { + .errb_irqs = bd96802_reg_errb_irqs, + .intb_irqs = bd96802_reg_intb_irqs, + .num_errb_irqs = ARRAY_SIZE(bd96802_reg_errb_irqs), + .num_intb_irqs = ARRAY_SIZE(bd96802_reg_intb_irqs), + .errb_irq_chip = &bd96802_irq_chip_errb, + .intb_irq_chip = &bd96802_irq_chip_intb, + .regmap_config = &bd96802_regmap_config, + .cells = bd96806_cells, + .num_cells = ARRAY_SIZE(bd96806_cells), + .unlock_reg = BD96801_LOCK_REG, + .unlock_val = BD96801_UNLOCK, +}; + +static int bd96801_i2c_probe(struct i2c_client *i2c) +{ + struct regmap_irq_chip_data *intb_irq_data, *errb_irq_data; + struct irq_domain *intb_domain, *errb_domain; + const struct bd968xx *ddata; + const struct fwnode_handle *fwnode; + struct resource *regulator_res; + struct resource wdg_irq; + struct regmap *regmap; + int intb_irq, errb_irq, num_errb = 0; + int num_regu_irqs, wdg_irq_no; + unsigned int chip_type; + int i, ret; + + chip_type = (unsigned int)(uintptr_t)device_get_match_data(&i2c->dev); + switch (chip_type) { + case ROHM_CHIP_TYPE_BD96801: + ddata = &bd96801_data; + break; + case ROHM_CHIP_TYPE_BD96802: + ddata = &bd96802_data; + break; + case ROHM_CHIP_TYPE_BD96805: + ddata = &bd96805_data; + break; + case ROHM_CHIP_TYPE_BD96806: + ddata = &bd96806_data; + break; + default: + dev_err(&i2c->dev, "Unknown IC\n"); + return -EINVAL; + } + + fwnode = dev_fwnode(&i2c->dev); + if (!fwnode) + return dev_err_probe(&i2c->dev, -EINVAL, "Failed to find fwnode\n"); + + intb_irq = fwnode_irq_get_byname(fwnode, "intb"); + if (intb_irq < 0) + return dev_err_probe(&i2c->dev, intb_irq, "INTB IRQ not configured\n"); + + /* ERRB may be omitted if processor is powered by the PMIC */ + errb_irq = fwnode_irq_get_byname(fwnode, "errb"); + if (errb_irq == -EPROBE_DEFER) + return errb_irq; + + if (errb_irq > 0) + num_errb = ddata->num_errb_irqs; + + num_regu_irqs = ddata->num_intb_irqs + num_errb; + + regulator_res = devm_kcalloc(&i2c->dev, num_regu_irqs, + sizeof(*regulator_res), GFP_KERNEL); + if (!regulator_res) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(i2c, ddata->regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(&i2c->dev, PTR_ERR(regmap), + "Regmap initialization failed\n"); + + ret = regmap_write(regmap, ddata->unlock_reg, ddata->unlock_val); + if (ret) + return dev_err_probe(&i2c->dev, ret, "Failed to unlock PMIC\n"); + + ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, intb_irq, + IRQF_ONESHOT, 0, ddata->intb_irq_chip, + &intb_irq_data); + if (ret) + return dev_err_probe(&i2c->dev, ret, "Failed to add INTB IRQ chip\n"); + + intb_domain = regmap_irq_get_domain(intb_irq_data); + + /* + * MFD core code is built to handle only one IRQ domain. BD96801 + * has two domains so we do IRQ mapping here and provide the + * already mapped IRQ numbers to sub-devices. + */ + for (i = 0; i < ddata->num_intb_irqs; i++) { + struct resource *res = ®ulator_res[i]; + + *res = ddata->intb_irqs[i]; + res->start = res->end = irq_create_mapping(intb_domain, + res->start); + } + + wdg_irq_no = irq_create_mapping(intb_domain, BD96801_WDT_ERR_STAT); + wdg_irq = DEFINE_RES_IRQ_NAMED(wdg_irq_no, "bd96801-wdg"); + + ddata->cells[WDG_CELL].resources = &wdg_irq; + ddata->cells[WDG_CELL].num_resources = 1; + + if (!num_errb) + goto skip_errb; + + ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, errb_irq, IRQF_ONESHOT, + 0, ddata->errb_irq_chip, &errb_irq_data); + if (ret) + return dev_err_probe(&i2c->dev, ret, + "Failed to add ERRB IRQ chip\n"); + + errb_domain = regmap_irq_get_domain(errb_irq_data); + + for (i = 0; i < num_errb; i++) { + struct resource *res = ®ulator_res[ddata->num_intb_irqs + i]; + + *res = ddata->errb_irqs[i]; + res->start = res->end = irq_create_mapping(errb_domain, res->start); + } + +skip_errb: + ddata->cells[REGULATOR_CELL].resources = regulator_res; + ddata->cells[REGULATOR_CELL].num_resources = num_regu_irqs; + ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, ddata->cells, + ddata->num_cells, NULL, 0, NULL); + if (ret) + dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n"); + + return ret; +} + +static const struct of_device_id bd96801_of_match[] = { + { .compatible = "rohm,bd96801", .data = (void *)ROHM_CHIP_TYPE_BD96801 }, + { .compatible = "rohm,bd96802", .data = (void *)ROHM_CHIP_TYPE_BD96802 }, + { .compatible = "rohm,bd96805", .data = (void *)ROHM_CHIP_TYPE_BD96805 }, + { .compatible = "rohm,bd96806", .data = (void *)ROHM_CHIP_TYPE_BD96806 }, + { } +}; +MODULE_DEVICE_TABLE(of, bd96801_of_match); + +static struct i2c_driver bd96801_i2c_driver = { + .driver = { + .name = "rohm-bd96801", + .of_match_table = bd96801_of_match, + }, + .probe = bd96801_i2c_probe, +}; + +static int __init bd96801_i2c_init(void) +{ + return i2c_add_driver(&bd96801_i2c_driver); +} + +/* Initialise early so consumer devices can complete system boot */ +subsys_initcall(bd96801_i2c_init); + +static void __exit bd96801_i2c_exit(void) +{ + i2c_del_driver(&bd96801_i2c_driver); +} +module_exit(bd96801_i2c_exit); + +MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); +MODULE_DESCRIPTION("ROHM BD9680X Power Management IC driver"); +MODULE_LICENSE("GPL"); |