[irqchip: irq/irqchip-next] irqchip/irq-mtk-cirq: Add support for System CIRQ on MT8192

[irqchip-bot for AngeloGioacchino Del Regno]

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     5c4e0aac0b2a27168844da49cee2c5dff2925d22
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/5c4e0aac0b2a27168844da49cee2c5dff2925d22
Author:        AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
AuthorDate:    Mon, 28 Nov 2022 10:22:17 +01:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Mon, 28 Nov 2022 11:44:02 

irqchip/irq-mtk-cirq: Add support for System CIRQ on MT8192

On some SoCs the System CIRQ register layout is slightly different,
as there are more registers per function and in some cases other
differences later in the layout: this is seen on at least MT8192,
but it's also valid for some other "contemporary" SoCs both for
Chromebooks and for smartphones.

Add the new "v2" register layout and use it if the compatible
"mediatek,mt8192-cirq" is found.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221128092217.36552-5-angelogioacchino.delregno@xxxxxxxxxxxxx
---
 drivers/irqchip/irq-mtk-cirq.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/irqchip/irq-mtk-cirq.c b/drivers/irqchip/irq-mtk-cirq.c
index 4776ed6..76bc028 100644
--- a/drivers/irqchip/irq-mtk-cirq.c
+++ b/drivers/irqchip/irq-mtk-cirq.c
@@ -39,6 +39,18 @@ static const u32 mtk_cirq_regoffs_v1[] = {
 	[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
 #define CIRQ_FLUSH	0x4
@@ -277,6 +289,7 @@ 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 */ }
 };