diff options
Diffstat (limited to 'drivers/mfd/wm8994-irq.c')
| -rw-r--r-- | drivers/mfd/wm8994-irq.c | 206 |
1 files changed, 33 insertions, 173 deletions
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c index d682f7bd112c..46b20c445ecf 100644 --- a/drivers/mfd/wm8994-irq.c +++ b/drivers/mfd/wm8994-irq.c @@ -18,248 +18,127 @@ #include <linux/irq.h> #include <linux/mfd/core.h> #include <linux/interrupt.h> +#include <linux/regmap.h> #include <linux/mfd/wm8994/core.h> #include <linux/mfd/wm8994/registers.h> #include <linux/delay.h> -struct wm8994_irq_data { - int reg; - int mask; -}; - -static struct wm8994_irq_data wm8994_irqs[] = { +static struct regmap_irq wm8994_irqs[] = { [WM8994_IRQ_TEMP_SHUT] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_TEMP_SHUT_EINT, }, [WM8994_IRQ_MIC1_DET] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_MIC1_DET_EINT, }, [WM8994_IRQ_MIC1_SHRT] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_MIC1_SHRT_EINT, }, [WM8994_IRQ_MIC2_DET] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_MIC2_DET_EINT, }, [WM8994_IRQ_MIC2_SHRT] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_MIC2_SHRT_EINT, }, [WM8994_IRQ_FLL1_LOCK] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_FLL1_LOCK_EINT, }, [WM8994_IRQ_FLL2_LOCK] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_FLL2_LOCK_EINT, }, [WM8994_IRQ_SRC1_LOCK] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_SRC1_LOCK_EINT, }, [WM8994_IRQ_SRC2_LOCK] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_SRC2_LOCK_EINT, }, [WM8994_IRQ_AIF1DRC1_SIG_DET] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_AIF1DRC1_SIG_DET, }, [WM8994_IRQ_AIF1DRC2_SIG_DET] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_AIF1DRC2_SIG_DET_EINT, }, [WM8994_IRQ_AIF2DRC_SIG_DET] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_AIF2DRC_SIG_DET_EINT, }, [WM8994_IRQ_FIFOS_ERR] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_FIFOS_ERR_EINT, }, [WM8994_IRQ_WSEQ_DONE] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_WSEQ_DONE_EINT, }, [WM8994_IRQ_DCS_DONE] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_DCS_DONE_EINT, }, [WM8994_IRQ_TEMP_WARN] = { - .reg = 2, + .reg_offset = 1, .mask = WM8994_TEMP_WARN_EINT, }, [WM8994_IRQ_GPIO(1)] = { - .reg = 1, .mask = WM8994_GP1_EINT, }, [WM8994_IRQ_GPIO(2)] = { - .reg = 1, .mask = WM8994_GP2_EINT, }, [WM8994_IRQ_GPIO(3)] = { - .reg = 1, .mask = WM8994_GP3_EINT, }, [WM8994_IRQ_GPIO(4)] = { - .reg = 1, .mask = WM8994_GP4_EINT, }, [WM8994_IRQ_GPIO(5)] = { - .reg = 1, .mask = WM8994_GP5_EINT, }, [WM8994_IRQ_GPIO(6)] = { - .reg = 1, .mask = WM8994_GP6_EINT, }, [WM8994_IRQ_GPIO(7)] = { - .reg = 1, .mask = WM8994_GP7_EINT, }, [WM8994_IRQ_GPIO(8)] = { - .reg = 1, .mask = WM8994_GP8_EINT, }, [WM8994_IRQ_GPIO(9)] = { - .reg = 1, .mask = WM8994_GP8_EINT, }, [WM8994_IRQ_GPIO(10)] = { - .reg = 1, .mask = WM8994_GP10_EINT, }, [WM8994_IRQ_GPIO(11)] = { - .reg = 1, .mask = WM8994_GP11_EINT, }, }; -static inline int irq_data_to_status_reg(struct wm8994_irq_data *irq_data) -{ - return WM8994_INTERRUPT_STATUS_1 - 1 + irq_data->reg; -} - -static inline int irq_data_to_mask_reg(struct wm8994_irq_data *irq_data) -{ - return WM8994_INTERRUPT_STATUS_1_MASK - 1 + irq_data->reg; -} - -static inline struct wm8994_irq_data *irq_to_wm8994_irq(struct wm8994 *wm8994, - int irq) -{ - return &wm8994_irqs[irq - wm8994->irq_base]; -} - -static void wm8994_irq_lock(struct irq_data *data) -{ - struct wm8994 *wm8994 = irq_data_get_irq_chip_data(data); - - mutex_lock(&wm8994->irq_lock); -} - -static void wm8994_irq_sync_unlock(struct irq_data *data) -{ - struct wm8994 *wm8994 = irq_data_get_irq_chip_data(data); - int i; - - for (i = 0; i < ARRAY_SIZE(wm8994->irq_masks_cur); i++) { - /* If there's been a change in the mask write it back - * to the hardware. */ - if (wm8994->irq_masks_cur[i] != wm8994->irq_masks_cache[i]) { - wm8994->irq_masks_cache[i] = wm8994->irq_masks_cur[i]; - wm8994_reg_write(wm8994, - WM8994_INTERRUPT_STATUS_1_MASK + i, - wm8994->irq_masks_cur[i]); - } - } - - mutex_unlock(&wm8994->irq_lock); -} - -static void wm8994_irq_enable(struct irq_data *data) -{ - struct wm8994 *wm8994 = irq_data_get_irq_chip_data(data); - struct wm8994_irq_data *irq_data = irq_to_wm8994_irq(wm8994, - data->irq); - - wm8994->irq_masks_cur[irq_data->reg - 1] &= ~irq_data->mask; -} - -static void wm8994_irq_disable(struct irq_data *data) -{ - struct wm8994 *wm8994 = irq_data_get_irq_chip_data(data); - struct wm8994_irq_data *irq_data = irq_to_wm8994_irq(wm8994, - data->irq); - - wm8994->irq_masks_cur[irq_data->reg - 1] |= irq_data->mask; -} +static struct regmap_irq_chip wm8994_irq_chip = { + .name = "wm8994", + .irqs = wm8994_irqs, + .num_irqs = ARRAY_SIZE(wm8994_irqs), -static struct irq_chip wm8994_irq_chip = { - .name = "wm8994", - .irq_bus_lock = wm8994_irq_lock, - .irq_bus_sync_unlock = wm8994_irq_sync_unlock, - .irq_disable = wm8994_irq_disable, - .irq_enable = wm8994_irq_enable, + .num_regs = 2, + .status_base = WM8994_INTERRUPT_STATUS_1, + .mask_base = WM8994_INTERRUPT_STATUS_1_MASK, + .ack_base = WM8994_INTERRUPT_STATUS_1, }; -/* The processing of the primary interrupt occurs in a thread so that - * we can interact with the device over I2C or SPI. */ -static irqreturn_t wm8994_irq_thread(int irq, void *data) -{ - struct wm8994 *wm8994 = data; - unsigned int i; - u16 status[WM8994_NUM_IRQ_REGS]; - int ret; - - ret = wm8994_bulk_read(wm8994, WM8994_INTERRUPT_STATUS_1, - WM8994_NUM_IRQ_REGS, status); - if (ret < 0) { - dev_err(wm8994->dev, "Failed to read interrupt status: %d\n", - ret); - return IRQ_NONE; - } - - /* Bit swap and apply masking */ - for (i = 0; i < WM8994_NUM_IRQ_REGS; i++) { - status[i] = be16_to_cpu(status[i]); - status[i] &= ~wm8994->irq_masks_cur[i]; - } - - /* Ack any unmasked IRQs */ - for (i = 0; i < ARRAY_SIZE(status); i++) { - if (status[i]) - wm8994_reg_write(wm8994, WM8994_INTERRUPT_STATUS_1 + i, - status[i]); - } - - /* Report */ - for (i = 0; i < ARRAY_SIZE(wm8994_irqs); i++) { - if (status[wm8994_irqs[i].reg - 1] & wm8994_irqs[i].mask) - handle_nested_irq(wm8994->irq_base + i); - } - - return IRQ_HANDLED; -} - int wm8994_irq_init(struct wm8994 *wm8994) { - int i, cur_irq, ret; - - mutex_init(&wm8994->irq_lock); - - /* Mask the individual interrupt sources */ - for (i = 0; i < ARRAY_SIZE(wm8994->irq_masks_cur); i++) { - wm8994->irq_masks_cur[i] = 0xffff; - wm8994->irq_masks_cache[i] = 0xffff; - wm8994_reg_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK + i, - 0xffff); - } + int ret; if (!wm8994->irq) { dev_warn(wm8994->dev, @@ -274,30 +153,12 @@ int wm8994_irq_init(struct wm8994 *wm8994) return 0; } - /* Register them with genirq */ - for (cur_irq = wm8994->irq_base; - cur_irq < ARRAY_SIZE(wm8994_irqs) + wm8994->irq_base; - cur_irq++) { - irq_set_chip_data(cur_irq, wm8994); - irq_set_chip_and_handler(cur_irq, &wm8994_irq_chip, - handle_edge_irq); - irq_set_nested_thread(cur_irq, 1); - - /* ARM needs us to explicitly flag the IRQ as valid - * and will set them noprobe when we do so. */ -#ifdef CONFIG_ARM - set_irq_flags(cur_irq, IRQF_VALID); -#else - irq_set_noprobe(cur_irq); -#endif - } - - ret = request_threaded_irq(wm8994->irq, NULL, wm8994_irq_thread, - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, - "wm8994", wm8994); + ret = regmap_add_irq_chip(wm8994->regmap, wm8994->irq, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + wm8994->irq_base, &wm8994_irq_chip, + &wm8994->irq_data); if (ret != 0) { - dev_err(wm8994->dev, "Failed to request IRQ %d: %d\n", - wm8994->irq, ret); + dev_err(wm8994->dev, "Failed to register IRQ chip: %d\n", ret); return ret; } @@ -309,6 +170,5 @@ int wm8994_irq_init(struct wm8994 *wm8994) void wm8994_irq_exit(struct wm8994 *wm8994) { - if (wm8994->irq) - free_irq(wm8994->irq, wm8994); + regmap_del_irq_chip(wm8994->irq, wm8994->irq_data); } |