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soc: mediatek: PMIC wrap: add a slave specific struct

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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: John Crispin <blogic@openwrt.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
John Crispin 2016-02-19 09:44:13 +01:00 committed by Matthias Brugger
parent 25269cefb6
commit b28d78cd18
1 changed files with 112 additions and 47 deletions
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159
drivers/soc/mediatek/mtk-pmic-wrap.c
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@ -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);
@ -653,9 +686,11 @@ 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) ||
(rdata != PWRAP_DEW_WRITE_TEST_VAL)) {
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");