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From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
To:     matthias.bgg@gmail.com
Cc:     robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        amergnat@baylibre.com, flora.fu@mediatek.com,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, kernel@collabora.com,
        phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
Subject: [PATCH v3 6/6] soc: mediatek: pwrap: Add support for MT6795 Helio X10
Date:   Wed, 12 Apr 2023 15:12:16 +0200
Message-Id: <20230412131216.198313-7-angelogioacchino.delregno@collabora.com>
In-Reply-To: <20230412131216.198313-1-angelogioacchino.delregno@collabora.com>
References: <20230412131216.198313-1-angelogioacchino.delregno@collabora.com>
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Add the necessary bits to support the MT6795 Helio X10 smartphone SoC:
this is always paired with a MT6331 PMIC, with MT6332 companion.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 136 ++++++++++++++++++++++++++-
 1 file changed, 135 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index ceeac43f7bd1..11095b8de71a 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -639,6 +639,91 @@ static int mt6779_regs[] = {
 	[PWRAP_WACS2_VLDCLR] =		0xC28,
 };
 
+static int mt6795_regs[] = {
+	[PWRAP_MUX_SEL] =		0x0,
+	[PWRAP_WRAP_EN] =		0x4,
+	[PWRAP_DIO_EN] =		0x8,
+	[PWRAP_SIDLY] =			0xc,
+	[PWRAP_RDDMY] =			0x10,
+	[PWRAP_SI_CK_CON] =		0x14,
+	[PWRAP_CSHEXT_WRITE] =		0x18,
+	[PWRAP_CSHEXT_READ] =		0x1c,
+	[PWRAP_CSLEXT_START] =		0x20,
+	[PWRAP_CSLEXT_END] =		0x24,
+	[PWRAP_STAUPD_PRD] =		0x28,
+	[PWRAP_STAUPD_GRPEN] =		0x2c,
+	[PWRAP_EINT_STA0_ADR] =		0x30,
+	[PWRAP_EINT_STA1_ADR] =		0x34,
+	[PWRAP_STAUPD_MAN_TRIG] =	0x40,
+	[PWRAP_STAUPD_STA] =		0x44,
+	[PWRAP_WRAP_STA] =		0x48,
+	[PWRAP_HARB_INIT] =		0x4c,
+	[PWRAP_HARB_HPRIO] =		0x50,
+	[PWRAP_HIPRIO_ARB_EN] =		0x54,
+	[PWRAP_HARB_STA0] =		0x58,
+	[PWRAP_HARB_STA1] =		0x5c,
+	[PWRAP_MAN_EN] =		0x60,
+	[PWRAP_MAN_CMD] =		0x64,
+	[PWRAP_MAN_RDATA] =		0x68,
+	[PWRAP_MAN_VLDCLR] =		0x6c,
+	[PWRAP_WACS0_EN] =		0x70,
+	[PWRAP_INIT_DONE0] =		0x74,
+	[PWRAP_WACS0_CMD] =		0x78,
+	[PWRAP_WACS0_RDATA] =		0x7c,
+	[PWRAP_WACS0_VLDCLR] =		0x80,
+	[PWRAP_WACS1_EN] =		0x84,
+	[PWRAP_INIT_DONE1] =		0x88,
+	[PWRAP_WACS1_CMD] =		0x8c,
+	[PWRAP_WACS1_RDATA] =		0x90,
+	[PWRAP_WACS1_VLDCLR] =		0x94,
+	[PWRAP_WACS2_EN] =		0x98,
+	[PWRAP_INIT_DONE2] =		0x9c,
+	[PWRAP_WACS2_CMD] =		0xa0,
+	[PWRAP_WACS2_RDATA] =		0xa4,
+	[PWRAP_WACS2_VLDCLR] =		0xa8,
+	[PWRAP_INT_EN] =		0xac,
+	[PWRAP_INT_FLG_RAW] =		0xb0,
+	[PWRAP_INT_FLG] =		0xb4,
+	[PWRAP_INT_CLR] =		0xb8,
+	[PWRAP_SIG_ADR] =		0xbc,
+	[PWRAP_SIG_MODE] =		0xc0,
+	[PWRAP_SIG_VALUE] =		0xc4,
+	[PWRAP_SIG_ERRVAL] =		0xc8,
+	[PWRAP_CRC_EN] =		0xcc,
+	[PWRAP_TIMER_EN] =		0xd0,
+	[PWRAP_TIMER_STA] =		0xd4,
+	[PWRAP_WDT_UNIT] =		0xd8,
+	[PWRAP_WDT_SRC_EN] =		0xdc,
+	[PWRAP_WDT_FLG] =		0xe0,
+	[PWRAP_DEBUG_INT_SEL] =		0xe4,
+	[PWRAP_DVFS_ADR0] =		0xe8,
+	[PWRAP_DVFS_WDATA0] =		0xec,
+	[PWRAP_DVFS_ADR1] =		0xf0,
+	[PWRAP_DVFS_WDATA1] =		0xf4,
+	[PWRAP_DVFS_ADR2] =		0xf8,
+	[PWRAP_DVFS_WDATA2] =		0xfc,
+	[PWRAP_DVFS_ADR3] =		0x100,
+	[PWRAP_DVFS_WDATA3] =		0x104,
+	[PWRAP_DVFS_ADR4] =		0x108,
+	[PWRAP_DVFS_WDATA4] =		0x10c,
+	[PWRAP_DVFS_ADR5] =		0x110,
+	[PWRAP_DVFS_WDATA5] =		0x114,
+	[PWRAP_DVFS_ADR6] =		0x118,
+	[PWRAP_DVFS_WDATA6] =		0x11c,
+	[PWRAP_DVFS_ADR7] =		0x120,
+	[PWRAP_DVFS_WDATA7] =		0x124,
+	[PWRAP_SPMINF_STA] =		0x128,
+	[PWRAP_CIPHER_KEY_SEL] =	0x12c,
+	[PWRAP_CIPHER_IV_SEL] =		0x130,
+	[PWRAP_CIPHER_EN] =		0x134,
+	[PWRAP_CIPHER_RDY] =		0x138,
+	[PWRAP_CIPHER_MODE] =		0x13c,
+	[PWRAP_CIPHER_SWRST] =		0x140,
+	[PWRAP_DCM_EN] =		0x144,
+	[PWRAP_DCM_DBC_PRD] =		0x148,
+	[PWRAP_EXT_CK] =		0x14c,
+};
+
 static int mt6797_regs[] = {
 	[PWRAP_MUX_SEL] =		0x0,
 	[PWRAP_WRAP_EN] =		0x4,
@@ -1230,6 +1315,7 @@ enum pwrap_type {
 	PWRAP_MT2701,
 	PWRAP_MT6765,
 	PWRAP_MT6779,
+	PWRAP_MT6795,
 	PWRAP_MT6797,
 	PWRAP_MT6873,
 	PWRAP_MT7622,
@@ -1650,6 +1736,20 @@ static void pwrap_init_chip_select_ext(struct pmic_wrapper *wrp, u8 hext_write,
 static int pwrap_common_init_reg_clock(struct pmic_wrapper *wrp)
 {
 	switch (wrp->master->type) {
+	case PWRAP_MT6795:
+		if (wrp->slave->type == PMIC_MT6331) {
+			const u32 *dew_regs = wrp->slave->dew_regs;
+
+			pwrap_write(wrp, dew_regs[PWRAP_DEW_RDDMY_NO], 0x8);
+
+			if (wrp->slave->comp_type == PMIC_MT6332) {
+				dew_regs = wrp->slave->comp_dew_regs;
+				pwrap_write(wrp, dew_regs[PWRAP_DEW_RDDMY_NO], 0x8);
+			}
+		}
+		pwrap_writel(wrp, 0x88, PWRAP_RDDMY);
+		pwrap_init_chip_select_ext(wrp, 15, 15, 15, 15);
+		break;
 	case PWRAP_MT8173:
 		pwrap_init_chip_select_ext(wrp, 0, 4, 2, 2);
 		break;
@@ -1744,6 +1844,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 	case PWRAP_MT2701:
 	case PWRAP_MT6765:
 	case PWRAP_MT6779:
+	case PWRAP_MT6795:
 	case PWRAP_MT6797:
 	case PWRAP_MT8173:
 	case PWRAP_MT8186:
@@ -1914,6 +2015,19 @@ static int pwrap_mt2701_init_soc_specific(struct pmic_wrapper *wrp)
 	return 0;
 }
 
+static int pwrap_mt6795_init_soc_specific(struct pmic_wrapper *wrp)
+{
+	pwrap_writel(wrp, 0xf, PWRAP_STAUPD_GRPEN);
+
+	if (wrp->slave->type == PMIC_MT6331)
+		pwrap_writel(wrp, 0x1b4, PWRAP_EINT_STA0_ADR);
+
+	if (wrp->slave->comp_type == PMIC_MT6332)
+		pwrap_writel(wrp, 0x8112, PWRAP_EINT_STA1_ADR);
+
+	return 0;
+}
+
 static int pwrap_mt7622_init_soc_specific(struct pmic_wrapper *wrp)
 {
 	pwrap_writel(wrp, 0, PWRAP_STAUPD_PRD);
@@ -1949,10 +2063,16 @@ static int pwrap_init(struct pmic_wrapper *wrp)
 	if (wrp->rstc_bridge)
 		reset_control_reset(wrp->rstc_bridge);
 
-	if (wrp->master->type == PWRAP_MT8173) {
+	switch (wrp->master->type) {
+	case PWRAP_MT6795:
+		fallthrough;
+	case PWRAP_MT8173:
 		/* Enable DCM */
 		pwrap_writel(wrp, 3, PWRAP_DCM_EN);
 		pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD);
+		break;
+	default:
+		break;
 	}
 
 	if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) {
@@ -2185,6 +2305,19 @@ static const struct pmic_wrapper_type pwrap_mt6779 = {
 	.init_soc_specific = NULL,
 };
 
+static const struct pmic_wrapper_type pwrap_mt6795 = {
+	.regs = mt6795_regs,
+	.type = PWRAP_MT6795,
+	.arb_en_all = 0x3f,
+	.int_en_all = ~(u32)(BIT(31) | BIT(2) | BIT(1)),
+	.int1_en_all = 0,
+	.spi_w = PWRAP_MAN_CMD_SPI_WRITE,
+	.wdt_src = PWRAP_WDT_SRC_MASK_NO_STAUPD,
+	.caps = PWRAP_CAP_RESET | PWRAP_CAP_DCM,
+	.init_reg_clock = pwrap_common_init_reg_clock,
+	.init_soc_specific = pwrap_mt6795_init_soc_specific,
+};
+
 static const struct pmic_wrapper_type pwrap_mt6797 = {
 	.regs = mt6797_regs,
 	.type = PWRAP_MT6797,
@@ -2318,6 +2451,7 @@ static const struct of_device_id of_pwrap_match_tbl[] = {
 	{ .compatible = "mediatek,mt2701-pwrap", .data = &pwrap_mt2701 },
 	{ .compatible = "mediatek,mt6765-pwrap", .data = &pwrap_mt6765 },
 	{ .compatible = "mediatek,mt6779-pwrap", .data = &pwrap_mt6779 },
+	{ .compatible = "mediatek,mt6795-pwrap", .data = &pwrap_mt6795 },
 	{ .compatible = "mediatek,mt6797-pwrap", .data = &pwrap_mt6797 },
 	{ .compatible = "mediatek,mt6873-pwrap", .data = &pwrap_mt6873 },
 	{ .compatible = "mediatek,mt7622-pwrap", .data = &pwrap_mt7622 },
-- 
2.40.0