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Commit b28d78cd authored by John Crispin's avatar John Crispin Committed by Matthias Brugger
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soc: mediatek: PMIC wrap: add a slave specific struct 



This patch adds a new struct pwrap_slv_type that we use to store the slave
specific data. The patch adds 2 new helper functions to access the dew
registers. The slave type is looked up via the wrappers child node.

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent 25269cef

drivers/soc/mediatek/mtk-pmic-wrap.c

+112 −47
Original line number Diff line number Diff line
@@ -69,33 +69,54 @@ 
					  PWRAP_WDT_SRC_EN_HARB_STAUPD_DLE | \

					  PWRAP_WDT_SRC_EN_HARB_STAUPD_ALE)



/* macro for slave device wrapper registers */

#define PWRAP_DEW_BASE			0xbc00

#define PWRAP_DEW_EVENT_OUT_EN		(PWRAP_DEW_BASE + 0x0)

#define PWRAP_DEW_DIO_EN		(PWRAP_DEW_BASE + 0x2)

#define PWRAP_DEW_EVENT_SRC_EN		(PWRAP_DEW_BASE + 0x4)

#define PWRAP_DEW_EVENT_SRC		(PWRAP_DEW_BASE + 0x6)

#define PWRAP_DEW_EVENT_FLAG		(PWRAP_DEW_BASE + 0x8)

#define PWRAP_DEW_READ_TEST		(PWRAP_DEW_BASE + 0xa)

#define PWRAP_DEW_WRITE_TEST		(PWRAP_DEW_BASE + 0xc)

#define PWRAP_DEW_CRC_EN		(PWRAP_DEW_BASE + 0xe)

#define PWRAP_DEW_CRC_VAL		(PWRAP_DEW_BASE + 0x10)

#define PWRAP_DEW_MON_GRP_SEL		(PWRAP_DEW_BASE + 0x12)

#define PWRAP_DEW_MON_FLAG_SEL		(PWRAP_DEW_BASE + 0x14)

#define PWRAP_DEW_EVENT_TEST		(PWRAP_DEW_BASE + 0x16)

#define PWRAP_DEW_CIPHER_KEY_SEL	(PWRAP_DEW_BASE + 0x18)

#define PWRAP_DEW_CIPHER_IV_SEL		(PWRAP_DEW_BASE + 0x1a)

#define PWRAP_DEW_CIPHER_LOAD		(PWRAP_DEW_BASE + 0x1c)

#define PWRAP_DEW_CIPHER_START		(PWRAP_DEW_BASE + 0x1e)

#define PWRAP_DEW_CIPHER_RDY		(PWRAP_DEW_BASE + 0x20)

#define PWRAP_DEW_CIPHER_MODE		(PWRAP_DEW_BASE + 0x22)

#define PWRAP_DEW_CIPHER_SWRST		(PWRAP_DEW_BASE + 0x24)

#define PWRAP_MT8173_DEW_CIPHER_IV0	(PWRAP_DEW_BASE + 0x26)

#define PWRAP_MT8173_DEW_CIPHER_IV1	(PWRAP_DEW_BASE + 0x28)

#define PWRAP_MT8173_DEW_CIPHER_IV2	(PWRAP_DEW_BASE + 0x2a)

#define PWRAP_MT8173_DEW_CIPHER_IV3	(PWRAP_DEW_BASE + 0x2c)

#define PWRAP_MT8173_DEW_CIPHER_IV4	(PWRAP_DEW_BASE + 0x2e)

#define PWRAP_MT8173_DEW_CIPHER_IV5	(PWRAP_DEW_BASE + 0x30)

/* defines for slave device wrapper registers */

enum dew_regs {

	PWRAP_DEW_BASE,

	PWRAP_DEW_DIO_EN,

	PWRAP_DEW_READ_TEST,

	PWRAP_DEW_WRITE_TEST,

	PWRAP_DEW_CRC_EN,

	PWRAP_DEW_CRC_VAL,

	PWRAP_DEW_MON_GRP_SEL,

	PWRAP_DEW_CIPHER_KEY_SEL,

	PWRAP_DEW_CIPHER_IV_SEL,

	PWRAP_DEW_CIPHER_RDY,

	PWRAP_DEW_CIPHER_MODE,

	PWRAP_DEW_CIPHER_SWRST,



	/* MT6397 only regs */

	PWRAP_DEW_EVENT_OUT_EN,

	PWRAP_DEW_EVENT_SRC_EN,

	PWRAP_DEW_EVENT_SRC,

	PWRAP_DEW_EVENT_FLAG,

	PWRAP_DEW_MON_FLAG_SEL,

	PWRAP_DEW_EVENT_TEST,

	PWRAP_DEW_CIPHER_LOAD,

	PWRAP_DEW_CIPHER_START,

};



static const u32 mt6397_regs[] = {

	[PWRAP_DEW_BASE] =		0xbc00,

	[PWRAP_DEW_EVENT_OUT_EN] =	0xbc00,

	[PWRAP_DEW_DIO_EN] =		0xbc02,

	[PWRAP_DEW_EVENT_SRC_EN] =	0xbc04,

	[PWRAP_DEW_EVENT_SRC] =		0xbc06,

	[PWRAP_DEW_EVENT_FLAG] =	0xbc08,

	[PWRAP_DEW_READ_TEST] =		0xbc0a,

	[PWRAP_DEW_WRITE_TEST] =	0xbc0c,

	[PWRAP_DEW_CRC_EN] =		0xbc0e,

	[PWRAP_DEW_CRC_VAL] =		0xbc10,

	[PWRAP_DEW_MON_GRP_SEL] =	0xbc12,

	[PWRAP_DEW_MON_FLAG_SEL] =	0xbc14,

	[PWRAP_DEW_EVENT_TEST] =	0xbc16,

	[PWRAP_DEW_CIPHER_KEY_SEL] =	0xbc18,

	[PWRAP_DEW_CIPHER_IV_SEL] =	0xbc1a,

	[PWRAP_DEW_CIPHER_LOAD] =	0xbc1c,

	[PWRAP_DEW_CIPHER_START] =	0xbc1e,

	[PWRAP_DEW_CIPHER_RDY] =	0xbc20,

	[PWRAP_DEW_CIPHER_MODE] =	0xbc22,

	[PWRAP_DEW_CIPHER_SWRST] =	0xbc24,

};



enum pwrap_regs {

	PWRAP_MUX_SEL,
@@ -349,16 +370,26 @@ static int mt8135_regs[] = { 
	[PWRAP_DCM_DBC_PRD] =		0x160,

};



enum pmic_type {

	PMIC_MT6397,

};



enum pwrap_type {

	PWRAP_MT8135,

	PWRAP_MT8173,

};



struct pwrap_slv_type {

	const u32 *dew_regs;

	enum pmic_type type;

};



struct pmic_wrapper {

	struct device *dev;

	void __iomem *base;

	struct regmap *regmap;

	const struct pmic_wrapper_type *master;

	const struct pwrap_slv_type *slave;

	struct clk *clk_spi;

	struct clk *clk_wrap;

	struct reset_control *rstc;
@@ -544,7 +575,8 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp) 


	for (i = 0; i < 4; i++) {

		pwrap_writel(wrp, i, PWRAP_SIDLY);

		pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata);

		pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST],

			   &rdata);

		if (rdata == PWRAP_DEW_READ_TEST_VAL) {

			dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i);

			pass |= 1 << i;
@@ -593,7 +625,8 @@ static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp) 
	u32 rdata;

	int ret;



	ret = pwrap_read(wrp, PWRAP_DEW_CIPHER_RDY, &rdata);

	ret = pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_RDY],

			 &rdata);

	if (ret)

		return 0;
@@ -621,12 +654,12 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) 
	}



	/* Config cipher mode @PMIC */

	pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x1);

	pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x0);

	pwrap_write(wrp, PWRAP_DEW_CIPHER_KEY_SEL, 0x1);

	pwrap_write(wrp, PWRAP_DEW_CIPHER_IV_SEL, 0x2);

	pwrap_write(wrp, PWRAP_DEW_CIPHER_LOAD, 0x1);

	pwrap_write(wrp, PWRAP_DEW_CIPHER_START, 0x1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x0);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_KEY_SEL], 0x1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_IV_SEL], 0x2);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_LOAD], 0x1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_START], 0x1);



	/* wait for cipher data ready@AP */

	ret = pwrap_wait_for_state(wrp, pwrap_is_cipher_ready);
@@ -643,7 +676,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) 
	}



	/* wait for cipher mode idle */

	pwrap_write(wrp, PWRAP_DEW_CIPHER_MODE, 0x1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_MODE], 0x1);

	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);

	if (ret) {

		dev_err(wrp->dev, "cipher mode idle fail, ret=%d\n", ret);
@@ -653,8 +686,10 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) 
	pwrap_writel(wrp, 1, PWRAP_CIPHER_MODE);



	/* Write Test */

	if (pwrap_write(wrp, PWRAP_DEW_WRITE_TEST, PWRAP_DEW_WRITE_TEST_VAL) ||

	    pwrap_read(wrp, PWRAP_DEW_WRITE_TEST, &rdata) ||

	if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_WRITE_TEST],

			PWRAP_DEW_WRITE_TEST_VAL) ||

	    pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_WRITE_TEST],

		       &rdata) ||

	    (rdata != PWRAP_DEW_WRITE_TEST_VAL)) {

		dev_err(wrp->dev, "rdata=0x%04X\n", rdata);

		return -EFAULT;
@@ -677,8 +712,10 @@ static int pwrap_mt8135_init_soc_specific(struct pmic_wrapper *wrp) 
	writel(0x7ff, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INT_EN);



	/* enable PMIC event out and sources */

	if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) ||

		pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) {

	if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_EVENT_OUT_EN],

			0x1) ||

	    pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_EVENT_SRC_EN],

			0xffff)) {

		dev_err(wrp->dev, "enable dewrap fail\n");

		return -EFAULT;

	}
@@ -689,8 +726,10 @@ static int pwrap_mt8135_init_soc_specific(struct pmic_wrapper *wrp) 
static int pwrap_mt8173_init_soc_specific(struct pmic_wrapper *wrp)

{

	/* PMIC_DEWRAP enables */

	if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) ||

		pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) {

	if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_EVENT_OUT_EN],

			0x1) ||

	    pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_EVENT_SRC_EN],

			0xffff)) {

		dev_err(wrp->dev, "enable dewrap fail\n");

		return -EFAULT;

	}
@@ -734,7 +773,7 @@ static int pwrap_init(struct pmic_wrapper *wrp) 
		return ret;



	/* Enable dual IO mode */

	pwrap_write(wrp, PWRAP_DEW_DIO_EN, 1);

	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);



	/* Check IDLE & INIT_DONE in advance */

	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);
@@ -746,7 +785,7 @@ static int pwrap_init(struct pmic_wrapper *wrp) 
	pwrap_writel(wrp, 1, PWRAP_DIO_EN);



	/* Read Test */

	pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata);

	pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);

	if (rdata != PWRAP_DEW_READ_TEST_VAL) {

		dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n",

				PWRAP_DEW_READ_TEST_VAL, rdata);
@@ -759,12 +798,13 @@ static int pwrap_init(struct pmic_wrapper *wrp) 
		return ret;



	/* Signature checking - using CRC */

	if (pwrap_write(wrp, PWRAP_DEW_CRC_EN, 0x1))

	if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1))

		return -EFAULT;



	pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);

	pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);

	pwrap_writel(wrp, PWRAP_DEW_CRC_VAL, PWRAP_SIG_ADR);

	pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL],

		     PWRAP_SIG_ADR);

	pwrap_writel(wrp, wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN);



	if (wrp->master->type == PWRAP_MT8135)
@@ -818,6 +858,21 @@ static const struct regmap_config pwrap_regmap_config = { 
	.max_register = 0xffff,

};



static const struct pwrap_slv_type pmic_mt6397 = {

	.dew_regs = mt6397_regs,

	.type = PMIC_MT6397,

};



static const struct of_device_id of_slave_match_tbl[] = {

	{

		.compatible = "mediatek,mt6397",

		.data = &pmic_mt6397,

	}, {

		/* sentinel */

	}

};

MODULE_DEVICE_TABLE(of, of_slave_match_tbl);



static struct pmic_wrapper_type pwrap_mt8135 = {

	.regs = mt8135_regs,

	.type = PWRAP_MT8135,
@@ -862,8 +917,17 @@ static int pwrap_probe(struct platform_device *pdev) 
	struct device_node *np = pdev->dev.of_node;

	const struct of_device_id *of_id =

		of_match_device(of_pwrap_match_tbl, &pdev->dev);

	const struct of_device_id *of_slave_id = NULL;

	struct resource *res;



	if (pdev->dev.of_node->child)

		of_slave_id = of_match_node(of_slave_match_tbl,

					    pdev->dev.of_node->child);

	if (!of_slave_id) {

		dev_dbg(&pdev->dev, "slave pmic should be defined in dts\n");

		return -EINVAL;

	}



	wrp = devm_kzalloc(&pdev->dev, sizeof(*wrp), GFP_KERNEL);

	if (!wrp)

		return -ENOMEM;
@@ -871,6 +935,7 @@ static int pwrap_probe(struct platform_device *pdev) 
	platform_set_drvdata(pdev, wrp);



	wrp->master = of_id->data;

	wrp->slave = of_slave_id->data;

	wrp->dev = &pdev->dev;



	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwrap");