[PATCH 1/2] soc: mediatek: pwrap: add pwrap driver for MT8186 SoC

[Johnson Wang]

MT8186 are highly integrated SoC and use PMIC_MT6366 for
power management. This patch adds pwrap master driver to
access PMIC_MT6366.

Signed-off-by: Johnson Wang <johnson.wang at mediatek.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 86 ++++++++++++++++++++++++++--
 1 file changed, 80 insertions(+), 6 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 952bc554f443..4af713274468 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -30,6 +30,7 @@
 #define PWRAP_GET_WACS_REQ(x)		(((x) >> 19) & 0x00000001)
 #define PWRAP_STATE_SYNC_IDLE0		BIT(20)
 #define PWRAP_STATE_INIT_DONE0		BIT(21)
+#define PWRAP_STATE_INIT_DONE0_V2	BIT(22)
 #define PWRAP_STATE_INIT_DONE1		BIT(15)
 
 /* macro for WACS FSM */
@@ -77,6 +78,8 @@
 #define PWRAP_CAP_INT1_EN	BIT(3)
 #define PWRAP_CAP_WDT_SRC1	BIT(4)
 #define PWRAP_CAP_ARB		BIT(5)
+#define PWRAP_CAP_MONITOR_V2	BIT(6)
+#define PWRAP_CAP_ARB_V2	BIT(8)
 
 /* defines for slave device wrapper registers */
 enum dew_regs {
@@ -1063,6 +1066,55 @@ static int mt8516_regs[] = {
 	[PWRAP_MSB_FIRST] =		0x170,
 };
 
+static int mt8186_regs[] = {
+	[PWRAP_MUX_SEL] =		0x0,
+	[PWRAP_WRAP_EN] =		0x4,
+	[PWRAP_DIO_EN] =		0x8,
+	[PWRAP_RDDMY] =			0x20,
+	[PWRAP_CSHEXT_WRITE] =		0x24,
+	[PWRAP_CSHEXT_READ] =		0x28,
+	[PWRAP_CSLEXT_WRITE] =		0x2C,
+	[PWRAP_CSLEXT_READ] =		0x30,
+	[PWRAP_EXT_CK_WRITE] =		0x34,
+	[PWRAP_STAUPD_CTRL] =		0x3C,
+	[PWRAP_STAUPD_GRPEN] =		0x40,
+	[PWRAP_EINT_STA0_ADR] =		0x44,
+	[PWRAP_EINT_STA1_ADR] =		0x48,
+	[PWRAP_INT_CLR] =		0xC8,
+	[PWRAP_INT_FLG] =		0xC4,
+	[PWRAP_MAN_EN] =		0x7C,
+	[PWRAP_MAN_CMD] =		0x80,
+	[PWRAP_WACS0_EN] =		0x8C,
+	[PWRAP_WACS1_EN] =		0x94,
+	[PWRAP_WACS2_EN] =		0x9C,
+	[PWRAP_INIT_DONE0] =		0x90,
+	[PWRAP_INIT_DONE1] =		0x98,
+	[PWRAP_INIT_DONE2] =		0xA0,
+	[PWRAP_INT_EN] =		0xBC,
+	[PWRAP_INT1_EN] =		0xCC,
+	[PWRAP_INT1_FLG] =		0xD4,
+	[PWRAP_INT1_CLR] =		0xD8,
+	[PWRAP_TIMER_EN] =		0xF0,
+	[PWRAP_WDT_UNIT] =		0xF8,
+	[PWRAP_WDT_SRC_EN] =		0xFC,
+	[PWRAP_WDT_SRC_EN_1] =		0x100,
+	[PWRAP_WDT_FLG] =		0x104,
+	[PWRAP_SPMINF_STA] =		0x1B4,
+	[PWRAP_DCM_EN] =		0x1EC,
+	[PWRAP_DCM_DBC_PRD] =		0x1F0,
+	[PWRAP_GPSINF_0_STA] =		0x204,
+	[PWRAP_GPSINF_1_STA] =		0x208,
+	[PWRAP_WACS0_CMD] =		0xC00,
+	[PWRAP_WACS0_RDATA] =		0xC04,
+	[PWRAP_WACS0_VLDCLR] =		0xC08,
+	[PWRAP_WACS1_CMD] =		0xC10,
+	[PWRAP_WACS1_RDATA] =		0xC14,
+	[PWRAP_WACS1_VLDCLR] =		0xC18,
+	[PWRAP_WACS2_CMD] =		0xC20,
+	[PWRAP_WACS2_RDATA] =		0xC24,
+	[PWRAP_WACS2_VLDCLR] =		0xC28,
+};
+
 enum pmic_type {
 	PMIC_MT6323,
 	PMIC_MT6351,
@@ -1083,6 +1135,7 @@ enum pwrap_type {
 	PWRAP_MT8135,
 	PWRAP_MT8173,
 	PWRAP_MT8183,
+	PWRAP_MT8186,
 	PWRAP_MT8195,
 	PWRAP_MT8516,
 };
@@ -1535,6 +1588,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 	case PWRAP_MT6779:
 	case PWRAP_MT6797:
 	case PWRAP_MT8173:
+	case PWRAP_MT8186:
 	case PWRAP_MT8516:
 		pwrap_writel(wrp, 1, PWRAP_CIPHER_EN);
 		break;
@@ -2069,6 +2123,19 @@ static struct pmic_wrapper_type pwrap_mt8516 = {
 	.init_soc_specific = NULL,
 };
 
+static struct pmic_wrapper_type pwrap_mt8186 = {
+	.regs = mt8186_regs,
+	.type = PWRAP_MT8186,
+	.arb_en_all = 0xfb27f,
+	.int_en_all = 0xfffffffe, /* disable WatchDog Timeout for bit 1 */
+	.int1_en_all =  0x000017ff, /* disable Matching interrupt for bit 13 */
+	.spi_w = PWRAP_MAN_CMD_SPI_WRITE,
+	.wdt_src = PWRAP_WDT_SRC_MASK_ALL,
+	.caps = PWRAP_CAP_INT1_EN | PWRAP_CAP_MONITOR_V2 | PWRAP_CAP_ARB_V2,
+	.init_reg_clock = pwrap_common_init_reg_clock,
+	.init_soc_specific = NULL,
+};
+
 static const struct of_device_id of_pwrap_match_tbl[] = {
 	{
 		.compatible = "mediatek,mt2701-pwrap",
@@ -2097,6 +2164,9 @@ static const struct of_device_id of_pwrap_match_tbl[] = {
 	}, {
 		.compatible = "mediatek,mt8183-pwrap",
 		.data = &pwrap_mt8183,
+	}, {
+		.compatible = "mediatek,mt8186-pwrap",
+		.data = &pwrap_mt8186,
 	}, {
 		.compatible = "mediatek,mt8195-pwrap",
 		.data = &pwrap_mt8195,
@@ -2112,7 +2182,7 @@ MODULE_DEVICE_TABLE(of, of_pwrap_match_tbl);
 static int pwrap_probe(struct platform_device *pdev)
 {
 	int ret, irq;
-	u32 mask_done;
+	u32 rdata;
 	struct pmic_wrapper *wrp;
 	struct device_node *np = pdev->dev.of_node;
 	const struct of_device_id *of_slave_id = NULL;
@@ -2207,12 +2277,16 @@ static int pwrap_probe(struct platform_device *pdev)
 		}
 	}
 
-	if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
-		mask_done = PWRAP_STATE_INIT_DONE1;
+	if (!HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+		rdata = pwrap_readl(wrp, PWRAP_WACS2_RDATA) &
+				    PWRAP_STATE_INIT_DONE0;
+	else if (!HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB_V2))
+		rdata = pwrap_readl(wrp, PWRAP_WACS2_RDATA) &
+				    PWRAP_STATE_INIT_DONE0_V2;
 	else
-		mask_done = PWRAP_STATE_INIT_DONE0;
-
-	if (!(pwrap_readl(wrp, PWRAP_WACS2_RDATA) & mask_done)) {
+		rdata = pwrap_readl(wrp, PWRAP_WACS2_RDATA) &
+				    PWRAP_STATE_INIT_DONE1;
+	if (!rdata) {
 		dev_dbg(wrp->dev, "initialization isn't finished\n");
 		ret = -ENODEV;
 		goto err_out2;
-- 
2.18.0