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authorMarc Zyngier <maz@kernel.org>2022-12-05 13:45:35 +0300
committerMarc Zyngier <maz@kernel.org>2022-12-05 13:45:35 +0300
commit4363c8525e07e86a3f410981a2712b3bf6b04659 (patch)
treef9379a3cfeb4612bfae9586ca9874b6df828a309 /drivers/irqchip
parentdc7f1c295f829c0dd40fed8e799a37a05bec6892 (diff)
parent5c4e0aac0b2a27168844da49cee2c5dff2925d22 (diff)
downloadlinux-4363c8525e07e86a3f410981a2712b3bf6b04659.tar.xz
Merge branch irq/cirq-v2 into irq/irqchip-next
* irq/cirq-v2: : . : Support for the MTK CIRQv2, courtesy of AngeloGioacchino Del Regno: : : "On newer SoCs (like MT8192/95 and also other non-chromebook chips), the : MediaTek CIRQ controller has a new register layout: this series adds : some more flexibility to the irq-mtk-cirq driver, allowing to select : the register layout based on a SoC-specific compatible." : : . irqchip/irq-mtk-cirq: Add support for System CIRQ on MT8192 irqchip/irq-mtk-cirq: Move register offsets to const array dt-bindings: interrupt-controller: mediatek,cirq: Document MT8192 dt-bindings: interrupt-controller: mediatek,cirq: Migrate to dt schema Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-mtk-cirq.c95
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,