[v12,08/23] soc: mediatek: mmsys: modify reset controller for MT8195 vdosys1

Commit Message

Nancy Lin (林欣螢) Feb. 22, 2022, 10:07 a.m. UTC

MT8195 vdosys1 has more than 32 reset bits and a different reset base
than other chips. Modify mmsys for support 64 bit and different reset
base.

Signed-off-by: Nancy.Lin <[e-mail]>
Reviewed-by: AngeloGioacchino Del Regno <[e-mail]>
---
 drivers/soc/mediatek/mt8195-mmsys.h |  1 +
 drivers/soc/mediatek/mtk-mmsys.c    | 21 ++++++++++++++++-----
 drivers/soc/mediatek/mtk-mmsys.h    |  2 ++
 3 files changed, 19 insertions(+), 5 deletions(-)

Patch

diff --git a/drivers/soc/mediatek/mt8195-mmsys.h b/drivers/soc/mediatek/mt8195-mmsys.h
index 11ba79e3275e..628098260f61 100644
--- a/drivers/soc/mediatek/mt8195-mmsys.h
+++ b/drivers/soc/mediatek/mt8195-mmsys.h
@@ -229,6 +229,7 @@ 
 #define MT8195_VDO1_MIXER_SOUT_SEL_IN				0xf68
 #define MT8195_MIXER_SOUT_SEL_IN_FROM_DISP_MIXER			0
 
+#define MT8195_VDO1_SW0_RST_B		0x1d0
 #define MT8195_VDO1_MERGE0_ASYNC_CFG_WD	0xe30
 #define MT8195_VDO1_MERGE1_ASYNC_CFG_WD	0xe40
 #define MT8195_VDO1_MERGE2_ASYNC_CFG_WD	0xe50
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 1b0024ee47a9..3f85171c980e 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -19,6 +19,8 @@ 
 #include "mt8195-mmsys.h"
 #include "mt8365-mmsys.h"
 
+#define MMSYS_SW_RESET_PER_REG 32
+
 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 	.clk_driver = "clk-mt2701-mm",
 	.routes = mmsys_default_routing_table,
@@ -49,12 +51,16 @@  static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 	.clk_driver = "clk-mt8173-mm",
 	.routes = mmsys_default_routing_table,
 	.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
+	.sw_reset_start = MMSYS_SW0_RST_B,
+	.num_resets = 32,
 };
 
 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
 	.clk_driver = "clk-mt8183-mm",
 	.routes = mmsys_mt8183_routing_table,
 	.num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table),
+	.sw_reset_start = MMSYS_SW0_RST_B,
+	.num_resets = 32,
 };
 
 static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
@@ -75,6 +81,8 @@  static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
 	.num_routes = ARRAY_SIZE(mmsys_mt8195_routing_table),
 	.config = mmsys_mt8195_config_table,
 	.num_configs = ARRAY_SIZE(mmsys_mt8195_config_table),
+	.sw_reset_start = MT8195_VDO1_SW0_RST_B,
+	.num_resets = 64,
 };
 
 static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = {
@@ -133,18 +141,22 @@  static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned l
 {
 	struct mtk_mmsys *mmsys = container_of(rcdev, struct mtk_mmsys, rcdev);
 	unsigned long flags;
+	u32 offset;
 	u32 reg;
 
+	offset = (id / MMSYS_SW_RESET_PER_REG) * sizeof(u32);
+	id = id % MMSYS_SW_RESET_PER_REG;
+
 	spin_lock_irqsave(&mmsys->lock, flags);
 
-	reg = readl_relaxed(mmsys->regs + MMSYS_SW0_RST_B);
+	reg = readl_relaxed(mmsys->regs + mmsys->data->sw_reset_start + offset);
 
 	if (assert)
 		reg &= ~BIT(id);
 	else
 		reg |= BIT(id);
 
-	writel_relaxed(reg, mmsys->regs + MMSYS_SW0_RST_B);
+	writel_relaxed(reg, mmsys->regs + mmsys->data->sw_reset_start + offset);
 
 	spin_unlock_irqrestore(&mmsys->lock, flags);
 
@@ -240,10 +252,11 @@  static int mtk_mmsys_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	mmsys->data = of_device_get_match_data(&pdev->dev);
 	spin_lock_init(&mmsys->lock);
 
 	mmsys->rcdev.owner = THIS_MODULE;
-	mmsys->rcdev.nr_resets = 32;
+	mmsys->rcdev.nr_resets = mmsys->data->num_resets;
 	mmsys->rcdev.ops = &mtk_mmsys_reset_ops;
 	mmsys->rcdev.of_node = pdev->dev.of_node;
 	ret = devm_reset_controller_register(&pdev->dev, &mmsys->rcdev);
@@ -252,8 +265,6 @@  static int mtk_mmsys_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	mmsys->data = of_device_get_match_data(&pdev->dev);
-
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	ret = cmdq_dev_get_client_reg(dev, &mmsys->cmdq_base, 0);
 	if (ret)
diff --git a/drivers/soc/mediatek/mtk-mmsys.h b/drivers/soc/mediatek/mtk-mmsys.h
index 2694021435d2..4842102cd451 100644
--- a/drivers/soc/mediatek/mtk-mmsys.h
+++ b/drivers/soc/mediatek/mtk-mmsys.h
@@ -102,6 +102,8 @@  struct mtk_mmsys_driver_data {
 	const unsigned int num_routes;
 	const struct mtk_mmsys_config *config;
 	const unsigned int num_configs;
+	u32 sw_reset_start;
+	u32 num_resets;
 };
 
 /*