Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Mark Brown | 1449 | 79.22% | 12 | 35.29% |
Charles Keepax | 291 | 15.91% | 14 | 41.18% |
Richard Fitzgerald | 77 | 4.21% | 4 | 11.76% |
Andrew Lunn | 8 | 0.44% | 1 | 2.94% |
Thomas Gleixner | 2 | 0.11% | 1 | 2.94% |
Dinghao Liu | 1 | 0.05% | 1 | 2.94% |
Krzysztof Kozlowski | 1 | 0.05% | 1 | 2.94% |
Total | 1829 | 34 |
// SPDX-License-Identifier: GPL-2.0-only /* * Arizona interrupt support * * Copyright 2012 Wolfson Microelectronics plc * * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> */ #include <linux/delay.h> #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/mfd/arizona/core.h> #include <linux/mfd/arizona/registers.h> #include "arizona.h" #define ARIZONA_AOD_IRQ_INDEX 0 #define ARIZONA_MAIN_IRQ_INDEX 1 static int arizona_map_irq(struct arizona *arizona, int irq) { int ret; if (arizona->aod_irq_chip) { ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq); if (ret >= 0) return ret; } return regmap_irq_get_virq(arizona->irq_chip, irq); } int arizona_request_irq(struct arizona *arizona, int irq, char *name, irq_handler_t handler, void *data) { irq = arizona_map_irq(arizona, irq); if (irq < 0) return irq; return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, name, data); } EXPORT_SYMBOL_GPL(arizona_request_irq); void arizona_free_irq(struct arizona *arizona, int irq, void *data) { irq = arizona_map_irq(arizona, irq); if (irq < 0) return; free_irq(irq, data); } EXPORT_SYMBOL_GPL(arizona_free_irq); int arizona_set_irq_wake(struct arizona *arizona, int irq, int on) { irq = arizona_map_irq(arizona, irq); if (irq < 0) return irq; return irq_set_irq_wake(irq, on); } EXPORT_SYMBOL_GPL(arizona_set_irq_wake); static irqreturn_t arizona_boot_done(int irq, void *data) { struct arizona *arizona = data; dev_dbg(arizona->dev, "Boot done\n"); return IRQ_HANDLED; } static irqreturn_t arizona_ctrlif_err(int irq, void *data) { struct arizona *arizona = data; /* * For pretty much all potential sources a register cache sync * won't help, we've just got a software bug somewhere. */ dev_err(arizona->dev, "Control interface error\n"); return IRQ_HANDLED; } static irqreturn_t arizona_irq_thread(int irq, void *data) { struct arizona *arizona = data; bool poll; unsigned int val; int ret; ret = pm_runtime_resume_and_get(arizona->dev); if (ret < 0) { dev_err(arizona->dev, "Failed to resume device: %d\n", ret); return IRQ_NONE; } do { poll = false; if (arizona->aod_irq_chip) { /* * Check the AOD status register to determine whether * the nested IRQ handler should be called. */ ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ1, &val); if (ret) dev_warn(arizona->dev, "Failed to read AOD IRQ1 %d\n", ret); else if (val) handle_nested_irq( irq_find_mapping(arizona->virq, 0)); } /* * Check if one of the main interrupts is asserted and only * check that domain if it is. */ ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS, &val); if (ret == 0 && val & ARIZONA_IRQ1_STS) { handle_nested_irq(irq_find_mapping(arizona->virq, 1)); } else if (ret != 0) { dev_err(arizona->dev, "Failed to read main IRQ status: %d\n", ret); } /* * Poll the IRQ pin status to see if we're really done * if the interrupt controller can't do it for us. */ if (!arizona->pdata.irq_gpio) { break; } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING && gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { poll = true; } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING && !gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { poll = true; } } while (poll); pm_runtime_mark_last_busy(arizona->dev); pm_runtime_put_autosuspend(arizona->dev); return IRQ_HANDLED; } static void arizona_irq_enable(struct irq_data *data) { } static void arizona_irq_disable(struct irq_data *data) { } static int arizona_irq_set_wake(struct irq_data *data, unsigned int on) { struct arizona *arizona = irq_data_get_irq_chip_data(data); return irq_set_irq_wake(arizona->irq, on); } static struct irq_chip arizona_irq_chip = { .name = "arizona", .irq_disable = arizona_irq_disable, .irq_enable = arizona_irq_enable, .irq_set_wake = arizona_irq_set_wake, }; static struct lock_class_key arizona_irq_lock_class; static struct lock_class_key arizona_irq_request_class; static int arizona_irq_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw) { struct arizona *data = h->host_data; irq_set_chip_data(virq, data); irq_set_lockdep_class(virq, &arizona_irq_lock_class, &arizona_irq_request_class); irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq); irq_set_nested_thread(virq, 1); irq_set_noprobe(virq); return 0; } static const struct irq_domain_ops arizona_domain_ops = { .map = arizona_irq_map, .xlate = irq_domain_xlate_twocell, }; int arizona_irq_init(struct arizona *arizona) { int flags = IRQF_ONESHOT; int ret; const struct regmap_irq_chip *aod, *irq; struct irq_data *irq_data; unsigned int virq; arizona->ctrlif_error = true; switch (arizona->type) { #ifdef CONFIG_MFD_WM5102 case WM5102: aod = &wm5102_aod; irq = &wm5102_irq; arizona->ctrlif_error = false; break; #endif #ifdef CONFIG_MFD_WM5110 case WM5110: case WM8280: aod = &wm5110_aod; switch (arizona->rev) { case 0 ... 2: irq = &wm5110_irq; break; default: irq = &wm5110_revd_irq; break; } arizona->ctrlif_error = false; break; #endif #ifdef CONFIG_MFD_CS47L24 case WM1831: case CS47L24: aod = NULL; irq = &cs47l24_irq; arizona->ctrlif_error = false; break; #endif #ifdef CONFIG_MFD_WM8997 case WM8997: aod = &wm8997_aod; irq = &wm8997_irq; arizona->ctrlif_error = false; break; #endif #ifdef CONFIG_MFD_WM8998 case WM8998: case WM1814: aod = &wm8998_aod; irq = &wm8998_irq; arizona->ctrlif_error = false; break; #endif default: BUG_ON("Unknown Arizona class device" == NULL); return -EINVAL; } /* Disable all wake sources by default */ regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0); /* Read the flags from the interrupt controller if not specified */ if (!arizona->pdata.irq_flags) { irq_data = irq_get_irq_data(arizona->irq); if (!irq_data) { dev_err(arizona->dev, "Invalid IRQ: %d\n", arizona->irq); return -EINVAL; } arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data); switch (arizona->pdata.irq_flags) { case IRQF_TRIGGER_LOW: case IRQF_TRIGGER_HIGH: case IRQF_TRIGGER_RISING: case IRQF_TRIGGER_FALLING: break; case IRQ_TYPE_NONE: default: /* Device default */ arizona->pdata.irq_flags = IRQF_TRIGGER_LOW; break; } } if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_RISING)) { ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1, ARIZONA_IRQ_POL, 0); if (ret != 0) { dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n", ret); goto err; } } flags |= arizona->pdata.irq_flags; /* Allocate a virtual IRQ domain to distribute to the regmap domains */ arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops, arizona); if (!arizona->virq) { dev_err(arizona->dev, "Failed to add core IRQ domain\n"); ret = -EINVAL; goto err; } if (aod) { virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); if (!virq) { dev_err(arizona->dev, "Failed to map AOD IRQs\n"); ret = -EINVAL; goto err_domain; } ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, 0, aod, &arizona->aod_irq_chip); if (ret != 0) { dev_err(arizona->dev, "Failed to add AOD IRQs: %d\n", ret); goto err_map_aod; } } virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); if (!virq) { dev_err(arizona->dev, "Failed to map main IRQs\n"); ret = -EINVAL; goto err_aod; } ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, 0, irq, &arizona->irq_chip); if (ret != 0) { dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret); goto err_map_main_irq; } /* Used to emulate edge trigger and to work around broken pinmux */ if (arizona->pdata.irq_gpio) { if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) { dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n", arizona->irq, arizona->pdata.irq_gpio, gpio_to_irq(arizona->pdata.irq_gpio)); arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio); } ret = devm_gpio_request_one(arizona->dev, arizona->pdata.irq_gpio, GPIOF_IN, "arizona IRQ"); if (ret != 0) { dev_err(arizona->dev, "Failed to request IRQ GPIO %d:: %d\n", arizona->pdata.irq_gpio, ret); arizona->pdata.irq_gpio = 0; } } ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread, flags, "arizona", arizona); if (ret != 0) { dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n", arizona->irq, ret); goto err_main_irq; } /* Make sure the boot done IRQ is unmasked for resumes */ ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done", arizona_boot_done, arizona); if (ret != 0) { dev_err(arizona->dev, "Failed to request boot done %d: %d\n", arizona->irq, ret); goto err_boot_done; } /* Handle control interface errors in the core */ if (arizona->ctrlif_error) { ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, "Control interface error", arizona_ctrlif_err, arizona); if (ret != 0) { dev_err(arizona->dev, "Failed to request CTRLIF_ERR %d: %d\n", arizona->irq, ret); goto err_ctrlif; } } return 0; err_ctrlif: arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); err_boot_done: free_irq(arizona->irq, arizona); err_main_irq: regmap_del_irq_chip(irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX), arizona->irq_chip); err_map_main_irq: irq_dispose_mapping(irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX)); err_aod: regmap_del_irq_chip(irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX), arizona->aod_irq_chip); err_map_aod: irq_dispose_mapping(irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX)); err_domain: irq_domain_remove(arizona->virq); err: return ret; } int arizona_irq_exit(struct arizona *arizona) { unsigned int virq; if (arizona->ctrlif_error) arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona); arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); regmap_del_irq_chip(virq, arizona->irq_chip); irq_dispose_mapping(virq); virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); regmap_del_irq_chip(virq, arizona->aod_irq_chip); irq_dispose_mapping(virq); irq_domain_remove(arizona->virq); free_irq(arizona->irq, arizona); return 0; }
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