diff options
Diffstat (limited to 'drivers/irqchip/irq-mtk-cirq.c')
| -rw-r--r-- | drivers/irqchip/irq-mtk-cirq.c | 95 |
1 files changed, 78 insertions, 17 deletions
diff --git a/drivers/irqchip/irq-mtk-cirq.c b/drivers/irqchip/irq-mtk-cirq.c index 9bca0918078e..76bc0283e3b9 100644 --- a/drivers/irqchip/irq-mtk-cirq.c +++ b/drivers/irqchip/irq-mtk-cirq.c @@ -15,14 +15,41 @@ #include <linux/slab.h> #include <linux/syscore_ops.h> -#define CIRQ_ACK 0x40 -#define CIRQ_MASK_SET 0xc0 -#define CIRQ_MASK_CLR 0x100 -#define CIRQ_SENS_SET 0x180 -#define CIRQ_SENS_CLR 0x1c0 -#define CIRQ_POL_SET 0x240 -#define CIRQ_POL_CLR 0x280 -#define CIRQ_CONTROL 0x300 +enum mtk_cirq_regoffs_index { + CIRQ_STA, + CIRQ_ACK, + CIRQ_MASK_SET, + CIRQ_MASK_CLR, + CIRQ_SENS_SET, + CIRQ_SENS_CLR, + CIRQ_POL_SET, + CIRQ_POL_CLR, + CIRQ_CONTROL +}; + +static const u32 mtk_cirq_regoffs_v1[] = { + [CIRQ_STA] = 0x0, + [CIRQ_ACK] = 0x40, + [CIRQ_MASK_SET] = 0xc0, + [CIRQ_MASK_CLR] = 0x100, + [CIRQ_SENS_SET] = 0x180, + [CIRQ_SENS_CLR] = 0x1c0, + [CIRQ_POL_SET] = 0x240, + [CIRQ_POL_CLR] = 0x280, + [CIRQ_CONTROL] = 0x300, +}; + +static const u32 mtk_cirq_regoffs_v2[] = { + [CIRQ_STA] = 0x0, + [CIRQ_ACK] = 0x80, + [CIRQ_MASK_SET] = 0x180, + [CIRQ_MASK_CLR] = 0x200, + [CIRQ_SENS_SET] = 0x300, + [CIRQ_SENS_CLR] = 0x380, + [CIRQ_POL_SET] = 0x480, + [CIRQ_POL_CLR] = 0x500, + [CIRQ_CONTROL] = 0x600, +}; #define CIRQ_EN 0x1 #define CIRQ_EDGE 0x2 @@ -32,18 +59,32 @@ struct mtk_cirq_chip_data { void __iomem *base; unsigned int ext_irq_start; unsigned int ext_irq_end; + const u32 *offsets; struct irq_domain *domain; }; static struct mtk_cirq_chip_data *cirq_data; -static void mtk_cirq_write_mask(struct irq_data *data, unsigned int offset) +static void __iomem *mtk_cirq_reg(struct mtk_cirq_chip_data *chip_data, + enum mtk_cirq_regoffs_index idx) +{ + return chip_data->base + chip_data->offsets[idx]; +} + +static void __iomem *mtk_cirq_irq_reg(struct mtk_cirq_chip_data *chip_data, + enum mtk_cirq_regoffs_index idx, + unsigned int cirq_num) +{ + return mtk_cirq_reg(chip_data, idx) + (cirq_num / 32) * 4; +} + +static void mtk_cirq_write_mask(struct irq_data *data, enum mtk_cirq_regoffs_index idx) { struct mtk_cirq_chip_data *chip_data = data->chip_data; unsigned int cirq_num = data->hwirq; u32 mask = 1 << (cirq_num % 32); - writel_relaxed(mask, chip_data->base + offset + (cirq_num / 32) * 4); + writel_relaxed(mask, mtk_cirq_irq_reg(chip_data, idx, cirq_num)); } static void mtk_cirq_mask(struct irq_data *data) @@ -160,6 +201,7 @@ static const struct irq_domain_ops cirq_domain_ops = { #ifdef CONFIG_PM_SLEEP static int mtk_cirq_suspend(void) { + void __iomem *reg; u32 value, mask; unsigned int irq, hwirq_num; bool pending, masked; @@ -200,31 +242,34 @@ static int mtk_cirq_suspend(void) continue; } + reg = mtk_cirq_irq_reg(cirq_data, CIRQ_ACK, i); mask = 1 << (i % 32); - writel_relaxed(mask, cirq_data->base + CIRQ_ACK + (i / 32) * 4); + writel_relaxed(mask, reg); } /* set edge_only mode, record edge-triggerd interrupts */ /* enable cirq */ - value = readl_relaxed(cirq_data->base + CIRQ_CONTROL); + reg = mtk_cirq_reg(cirq_data, CIRQ_CONTROL); + value = readl_relaxed(reg); value |= (CIRQ_EDGE | CIRQ_EN); - writel_relaxed(value, cirq_data->base + CIRQ_CONTROL); + writel_relaxed(value, reg); return 0; } static void mtk_cirq_resume(void) { + void __iomem *reg = mtk_cirq_reg(cirq_data, CIRQ_CONTROL); u32 value; /* flush recorded interrupts, will send signals to parent controller */ - value = readl_relaxed(cirq_data->base + CIRQ_CONTROL); - writel_relaxed(value | CIRQ_FLUSH, cirq_data->base + CIRQ_CONTROL); + value = readl_relaxed(reg); + writel_relaxed(value | CIRQ_FLUSH, reg); /* disable cirq */ - value = readl_relaxed(cirq_data->base + CIRQ_CONTROL); + value = readl_relaxed(reg); value &= ~(CIRQ_EDGE | CIRQ_EN); - writel_relaxed(value, cirq_data->base + CIRQ_CONTROL); + writel_relaxed(value, reg); } static struct syscore_ops mtk_cirq_syscore_ops = { @@ -240,10 +285,19 @@ static void mtk_cirq_syscore_init(void) static inline void mtk_cirq_syscore_init(void) {} #endif +static const struct of_device_id mtk_cirq_of_match[] = { + { .compatible = "mediatek,mt2701-cirq", .data = &mtk_cirq_regoffs_v1 }, + { .compatible = "mediatek,mt8135-cirq", .data = &mtk_cirq_regoffs_v1 }, + { .compatible = "mediatek,mt8173-cirq", .data = &mtk_cirq_regoffs_v1 }, + { .compatible = "mediatek,mt8192-cirq", .data = &mtk_cirq_regoffs_v2 }, + { /* sentinel */ } +}; + static int __init mtk_cirq_of_init(struct device_node *node, struct device_node *parent) { struct irq_domain *domain, *domain_parent; + const struct of_device_id *match; unsigned int irq_num; int ret; @@ -274,6 +328,13 @@ static int __init mtk_cirq_of_init(struct device_node *node, if (ret) goto out_unmap; + match = of_match_node(mtk_cirq_of_match, node); + if (!match) { + ret = -ENODEV; + goto out_unmap; + } + cirq_data->offsets = match->data; + irq_num = cirq_data->ext_irq_end - cirq_data->ext_irq_start + 1; domain = irq_domain_add_hierarchy(domain_parent, 0, irq_num, node, |