| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Abhijeet Dharmapurikar | 954 | 32.85% | 2 | 8.70% |
| Srinivas Kandagatla | 921 | 31.71% | 1 | 4.35% |
| Stephen Boyd | 691 | 23.79% | 7 | 30.43% |
| Brian Masney | 153 | 5.27% | 1 | 4.35% |
| Björn Andersson | 77 | 2.65% | 1 | 4.35% |
| Dmitry Eremin-Solenikov | 59 | 2.03% | 1 | 4.35% |
| Linus Walleij | 20 | 0.69% | 1 | 4.35% |
| Jingoo Han | 15 | 0.52% | 2 | 8.70% |
| Kees Cook | 4 | 0.14% | 1 | 4.35% |
| Thomas Gleixner | 4 | 0.14% | 2 | 8.70% |
| Marc Zyngier | 2 | 0.07% | 1 | 4.35% |
| Julia Cartwright | 2 | 0.07% | 1 | 4.35% |
| David Brown | 1 | 0.03% | 1 | 4.35% |
| Gustavo A. R. Silva | 1 | 0.03% | 1 | 4.35% |
| Total | 2904 | 23 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2011, Code Aurora Forum. All rights reserved. */ #define pr_fmt(fmt) "%s: " fmt, __func__ #include <linux/kernel.h> #include <linux/interrupt.h> #include <linux/irqchip/chained_irq.h> #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/ssbi.h> #include <linux/regmap.h> #include <linux/of_platform.h> #include <linux/mfd/core.h> #define SSBI_REG_ADDR_IRQ_BASE 0x1BB #define SSBI_REG_ADDR_IRQ_ROOT (SSBI_REG_ADDR_IRQ_BASE + 0) #define SSBI_REG_ADDR_IRQ_M_STATUS1 (SSBI_REG_ADDR_IRQ_BASE + 1) #define SSBI_REG_ADDR_IRQ_M_STATUS2 (SSBI_REG_ADDR_IRQ_BASE + 2) #define SSBI_REG_ADDR_IRQ_M_STATUS3 (SSBI_REG_ADDR_IRQ_BASE + 3) #define SSBI_REG_ADDR_IRQ_M_STATUS4 (SSBI_REG_ADDR_IRQ_BASE + 4) #define SSBI_REG_ADDR_IRQ_BLK_SEL (SSBI_REG_ADDR_IRQ_BASE + 5) #define SSBI_REG_ADDR_IRQ_IT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 6) #define SSBI_REG_ADDR_IRQ_CONFIG (SSBI_REG_ADDR_IRQ_BASE + 7) #define SSBI_REG_ADDR_IRQ_RT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 8) #define PM8821_SSBI_REG_ADDR_IRQ_BASE 0x100 #define PM8821_SSBI_REG_ADDR_IRQ_MASTER0 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0x30) #define PM8821_SSBI_REG_ADDR_IRQ_MASTER1 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0xb0) #define PM8821_SSBI_REG(m, b, offset) \ ((m == 0) ? \ (PM8821_SSBI_REG_ADDR_IRQ_MASTER0 + b + offset) : \ (PM8821_SSBI_REG_ADDR_IRQ_MASTER1 + b + offset)) #define PM8821_SSBI_ADDR_IRQ_ROOT(m, b) PM8821_SSBI_REG(m, b, 0x0) #define PM8821_SSBI_ADDR_IRQ_CLEAR(m, b) PM8821_SSBI_REG(m, b, 0x01) #define PM8821_SSBI_ADDR_IRQ_MASK(m, b) PM8821_SSBI_REG(m, b, 0x08) #define PM8821_SSBI_ADDR_IRQ_RT_STATUS(m, b) PM8821_SSBI_REG(m, b, 0x0f) #define PM8821_BLOCKS_PER_MASTER 7 #define PM_IRQF_LVL_SEL 0x01 /* level select */ #define PM_IRQF_MASK_FE 0x02 /* mask falling edge */ #define PM_IRQF_MASK_RE 0x04 /* mask rising edge */ #define PM_IRQF_CLR 0x08 /* clear interrupt */ #define PM_IRQF_BITS_MASK 0x70 #define PM_IRQF_BITS_SHIFT 4 #define PM_IRQF_WRITE 0x80 #define PM_IRQF_MASK_ALL (PM_IRQF_MASK_FE | \ PM_IRQF_MASK_RE) #define REG_HWREV 0x002 /* PMIC4 revision */ #define REG_HWREV_2 0x0E8 /* PMIC4 revision 2 */ #define PM8XXX_NR_IRQS 256 #define PM8821_NR_IRQS 112 struct pm_irq_data { int num_irqs; struct irq_chip *irq_chip; irq_handler_t irq_handler; }; struct pm_irq_chip { struct regmap *regmap; spinlock_t pm_irq_lock; struct irq_domain *irqdomain; unsigned int num_blocks; unsigned int num_masters; const struct pm_irq_data *pm_irq_data; /* MUST BE AT THE END OF THIS STRUCT */ u8 config[]; }; static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp, unsigned int *ip) { int rc; spin_lock(&chip->pm_irq_lock); rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp); if (rc) { pr_err("Failed Selecting Block %d rc=%d\n", bp, rc); goto bail; } rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_IT_STATUS, ip); if (rc) pr_err("Failed Reading Status rc=%d\n", rc); bail: spin_unlock(&chip->pm_irq_lock); return rc; } static int pm8xxx_config_irq(struct pm_irq_chip *chip, unsigned int bp, unsigned int cp) { int rc; spin_lock(&chip->pm_irq_lock); rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp); if (rc) { pr_err("Failed Selecting Block %d rc=%d\n", bp, rc); goto bail; } cp |= PM_IRQF_WRITE; rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_CONFIG, cp); if (rc) pr_err("Failed Configuring IRQ rc=%d\n", rc); bail: spin_unlock(&chip->pm_irq_lock); return rc; } static int pm8xxx_irq_block_handler(struct pm_irq_chip *chip, int block) { int pmirq, i, ret = 0; unsigned int bits; ret = pm8xxx_read_block_irq(chip, block, &bits); if (ret) { pr_err("Failed reading %d block ret=%d", block, ret); return ret; } if (!bits) { pr_err("block bit set in master but no irqs: %d", block); return 0; } /* Check IRQ bits */ for (i = 0; i < 8; i++) { if (bits & (1 << i)) { pmirq = block * 8 + i; generic_handle_domain_irq(chip->irqdomain, pmirq); } } return 0; } static int pm8xxx_irq_master_handler(struct pm_irq_chip *chip, int master) { unsigned int blockbits; int block_number, i, ret = 0; ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_M_STATUS1 + master, &blockbits); if (ret) { pr_err("Failed to read master %d ret=%d\n", master, ret); return ret; } if (!blockbits) { pr_err("master bit set in root but no blocks: %d", master); return 0; } for (i = 0; i < 8; i++) if (blockbits & (1 << i)) { block_number = master * 8 + i; /* block # */ ret |= pm8xxx_irq_block_handler(chip, block_number); } return ret; } static irqreturn_t pm8xxx_irq_handler(int irq, void *data) { struct pm_irq_chip *chip = data; unsigned int root; int i, ret, masters = 0; ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_ROOT, &root); if (ret) { pr_err("Can't read root status ret=%d\n", ret); return IRQ_NONE; } /* on pm8xxx series masters start from bit 1 of the root */ masters = root >> 1; /* Read allowed masters for blocks. */ for (i = 0; i < chip->num_masters; i++) if (masters & (1 << i)) pm8xxx_irq_master_handler(chip, i); return IRQ_HANDLED; } static void pm8821_irq_block_handler(struct pm_irq_chip *chip, int master, int block) { int pmirq, i, ret; unsigned int bits; ret = regmap_read(chip->regmap, PM8821_SSBI_ADDR_IRQ_ROOT(master, block), &bits); if (ret) { pr_err("Reading block %d failed ret=%d", block, ret); return; } /* Convert block offset to global block number */ block += (master * PM8821_BLOCKS_PER_MASTER) - 1; /* Check IRQ bits */ for (i = 0; i < 8; i++) { if (bits & BIT(i)) { pmirq = block * 8 + i; generic_handle_domain_irq(chip->irqdomain, pmirq); } } } static inline void pm8821_irq_master_handler(struct pm_irq_chip *chip, int master, u8 master_val) { int block; for (block = 1; block < 8; block++) if (master_val & BIT(block)) pm8821_irq_block_handler(chip, master, block); } static irqreturn_t pm8821_irq_handler(int irq, void *data) { struct pm_irq_chip *chip = data; unsigned int master; int ret; ret = regmap_read(chip->regmap, PM8821_SSBI_REG_ADDR_IRQ_MASTER0, &master); if (ret) { pr_err("Failed to read master 0 ret=%d\n", ret); return IRQ_NONE; } /* bits 1 through 7 marks the first 7 blocks in master 0 */ if (master & GENMASK(7, 1)) pm8821_irq_master_handler(chip, 0, master); /* bit 0 marks if master 1 contains any bits */ if (!(master & BIT(0))) return IRQ_NONE; ret = regmap_read(chip->regmap, PM8821_SSBI_REG_ADDR_IRQ_MASTER1, &master); if (ret) { pr_err("Failed to read master 1 ret=%d\n", ret); return IRQ_NONE; } pm8821_irq_master_handler(chip, 1, master); return IRQ_HANDLED; } static void pm8xxx_irq_mask_ack(struct irq_data *d) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); u8 block, config; block = pmirq / 8; config = chip->config[pmirq] | PM_IRQF_MASK_ALL | PM_IRQF_CLR; pm8xxx_config_irq(chip, block, config); } static void pm8xxx_irq_unmask(struct irq_data *d) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); u8 block, config; block = pmirq / 8; config = chip->config[pmirq]; pm8xxx_config_irq(chip, block, config); } static int pm8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); int irq_bit; u8 block, config; block = pmirq / 8; irq_bit = pmirq % 8; chip->config[pmirq] = (irq_bit << PM_IRQF_BITS_SHIFT) | PM_IRQF_MASK_ALL; if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { if (flow_type & IRQF_TRIGGER_RISING) chip->config[pmirq] &= ~PM_IRQF_MASK_RE; if (flow_type & IRQF_TRIGGER_FALLING) chip->config[pmirq] &= ~PM_IRQF_MASK_FE; } else { chip->config[pmirq] |= PM_IRQF_LVL_SEL; if (flow_type & IRQF_TRIGGER_HIGH) chip->config[pmirq] &= ~PM_IRQF_MASK_RE; else chip->config[pmirq] &= ~PM_IRQF_MASK_FE; } config = chip->config[pmirq] | PM_IRQF_CLR; return pm8xxx_config_irq(chip, block, config); } static int pm8xxx_irq_get_irqchip_state(struct irq_data *d, enum irqchip_irq_state which, bool *state) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); unsigned int bits; int irq_bit; u8 block; int rc; if (which != IRQCHIP_STATE_LINE_LEVEL) return -EINVAL; block = pmirq / 8; irq_bit = pmirq % 8; spin_lock(&chip->pm_irq_lock); rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, block); if (rc) { pr_err("Failed Selecting Block %d rc=%d\n", block, rc); goto bail; } rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_RT_STATUS, &bits); if (rc) { pr_err("Failed Reading Status rc=%d\n", rc); goto bail; } *state = !!(bits & BIT(irq_bit)); bail: spin_unlock(&chip->pm_irq_lock); return rc; } static struct irq_chip pm8xxx_irq_chip = { .name = "pm8xxx", .irq_mask_ack = pm8xxx_irq_mask_ack, .irq_unmask = pm8xxx_irq_unmask, .irq_set_type = pm8xxx_irq_set_type, .irq_get_irqchip_state = pm8xxx_irq_get_irqchip_state, .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, }; static void pm8xxx_irq_domain_map(struct pm_irq_chip *chip, struct irq_domain *domain, unsigned int irq, irq_hw_number_t hwirq, unsigned int type) { irq_domain_set_info(domain, irq, hwirq, chip->pm_irq_data->irq_chip, chip, handle_level_irq, NULL, NULL); irq_set_noprobe(irq); } static int pm8xxx_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, unsigned int nr_irqs, void *data) { struct pm_irq_chip *chip = domain->host_data; struct irq_fwspec *fwspec = data; irq_hw_number_t hwirq; unsigned int type; int ret, i; ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type); if (ret) return ret; for (i = 0; i < nr_irqs; i++) pm8xxx_irq_domain_map(chip, domain, virq + i, hwirq + i, type); return 0; } static const struct irq_domain_ops pm8xxx_irq_domain_ops = { .alloc = pm8xxx_irq_domain_alloc, .free = irq_domain_free_irqs_common, .translate = irq_domain_translate_twocell, }; static void pm8821_irq_mask_ack(struct irq_data *d) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); u8 block, master; int irq_bit, rc; block = pmirq / 8; master = block / PM8821_BLOCKS_PER_MASTER; irq_bit = pmirq % 8; block %= PM8821_BLOCKS_PER_MASTER; rc = regmap_update_bits(chip->regmap, PM8821_SSBI_ADDR_IRQ_MASK(master, block), BIT(irq_bit), BIT(irq_bit)); if (rc) { pr_err("Failed to mask IRQ:%d rc=%d\n", pmirq, rc); return; } rc = regmap_update_bits(chip->regmap, PM8821_SSBI_ADDR_IRQ_CLEAR(master, block), BIT(irq_bit), BIT(irq_bit)); if (rc) pr_err("Failed to CLEAR IRQ:%d rc=%d\n", pmirq, rc); } static void pm8821_irq_unmask(struct irq_data *d) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); unsigned int pmirq = irqd_to_hwirq(d); int irq_bit, rc; u8 block, master; block = pmirq / 8; master = block / PM8821_BLOCKS_PER_MASTER; irq_bit = pmirq % 8; block %= PM8821_BLOCKS_PER_MASTER; rc = regmap_update_bits(chip->regmap, PM8821_SSBI_ADDR_IRQ_MASK(master, block), BIT(irq_bit), ~BIT(irq_bit)); if (rc) pr_err("Failed to read/write unmask IRQ:%d rc=%d\n", pmirq, rc); } static int pm8821_irq_get_irqchip_state(struct irq_data *d, enum irqchip_irq_state which, bool *state) { struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); int rc, pmirq = irqd_to_hwirq(d); u8 block, irq_bit, master; unsigned int bits; block = pmirq / 8; master = block / PM8821_BLOCKS_PER_MASTER; irq_bit = pmirq % 8; block %= PM8821_BLOCKS_PER_MASTER; rc = regmap_read(chip->regmap, PM8821_SSBI_ADDR_IRQ_RT_STATUS(master, block), &bits); if (rc) { pr_err("Reading Status of IRQ %d failed rc=%d\n", pmirq, rc); return rc; } *state = !!(bits & BIT(irq_bit)); return rc; } static struct irq_chip pm8821_irq_chip = { .name = "pm8821", .irq_mask_ack = pm8821_irq_mask_ack, .irq_unmask = pm8821_irq_unmask, .irq_get_irqchip_state = pm8821_irq_get_irqchip_state, .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, }; static const struct regmap_config ssbi_regmap_config = { .reg_bits = 16, .val_bits = 8, .max_register = 0x3ff, .fast_io = true, .reg_read = ssbi_reg_read, .reg_write = ssbi_reg_write }; static const struct pm_irq_data pm8xxx_data = { .num_irqs = PM8XXX_NR_IRQS, .irq_chip = &pm8xxx_irq_chip, .irq_handler = pm8xxx_irq_handler, }; static const struct pm_irq_data pm8821_data = { .num_irqs = PM8821_NR_IRQS, .irq_chip = &pm8821_irq_chip, .irq_handler = pm8821_irq_handler, }; static const struct of_device_id pm8xxx_id_table[] = { { .compatible = "qcom,pm8058", .data = &pm8xxx_data}, { .compatible = "qcom,pm8821", .data = &pm8821_data}, { .compatible = "qcom,pm8921", .data = &pm8xxx_data}, { } }; MODULE_DEVICE_TABLE(of, pm8xxx_id_table); static int pm8xxx_probe(struct platform_device *pdev) { const struct pm_irq_data *data; struct regmap *regmap; int irq, rc; unsigned int val; struct pm_irq_chip *chip; data = of_device_get_match_data(&pdev->dev); if (!data) { dev_err(&pdev->dev, "No matching driver data found\n"); return -EINVAL; } irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; regmap = devm_regmap_init(&pdev->dev, NULL, pdev->dev.parent, &ssbi_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); /* Read PMIC chip revision */ rc = regmap_read(regmap, REG_HWREV, &val); if (rc) { pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc); return rc; } pr_info("PMIC revision 1: %02X\n", val); /* Read PMIC chip revision 2 */ rc = regmap_read(regmap, REG_HWREV_2, &val); if (rc) { pr_err("Failed to read hw rev 2 reg %d:rc=%d\n", REG_HWREV_2, rc); return rc; } pr_info("PMIC revision 2: %02X\n", val); chip = devm_kzalloc(&pdev->dev, struct_size(chip, config, data->num_irqs), GFP_KERNEL); if (!chip) return -ENOMEM; platform_set_drvdata(pdev, chip); chip->regmap = regmap; chip->num_blocks = DIV_ROUND_UP(data->num_irqs, 8); chip->num_masters = DIV_ROUND_UP(chip->num_blocks, 8); chip->pm_irq_data = data; spin_lock_init(&chip->pm_irq_lock); chip->irqdomain = irq_domain_add_linear(pdev->dev.of_node, data->num_irqs, &pm8xxx_irq_domain_ops, chip); if (!chip->irqdomain) return -ENODEV; rc = devm_request_irq(&pdev->dev, irq, data->irq_handler, 0, dev_name(&pdev->dev), chip); if (rc) return rc; irq_set_irq_wake(irq, 1); rc = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); if (rc) irq_domain_remove(chip->irqdomain); return rc; } static int pm8xxx_remove_child(struct device *dev, void *unused) { platform_device_unregister(to_platform_device(dev)); return 0; } static int pm8xxx_remove(struct platform_device *pdev) { struct pm_irq_chip *chip = platform_get_drvdata(pdev); device_for_each_child(&pdev->dev, NULL, pm8xxx_remove_child); irq_domain_remove(chip->irqdomain); return 0; } static struct platform_driver pm8xxx_driver = { .probe = pm8xxx_probe, .remove = pm8xxx_remove, .driver = { .name = "pm8xxx-core", .of_match_table = pm8xxx_id_table, }, }; static int __init pm8xxx_init(void) { return platform_driver_register(&pm8xxx_driver); } subsys_initcall(pm8xxx_init); static void __exit pm8xxx_exit(void) { platform_driver_unregister(&pm8xxx_driver); } module_exit(pm8xxx_exit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("PMIC 8xxx core driver"); MODULE_VERSION("1.0"); MODULE_ALIAS("platform:pm8xxx-core");
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