MT6873/8192 are highly integrated SoCs and use PMIC_MT6359 for
power management. This patch adds pwrap master driver to
access PMIC_MT6359.
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@xxxxxxxxxxxx>
---
drivers/soc/mediatek/mtk-pmic-wrap.c | 98 ++++++++++++++++++++++++++++++++----
1 file changed, 87 insertions(+), 11 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index c897205..6e7f796f 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -24,11 +24,13 @@
#define PWRAP_MT8135_BRIDGE_WDT_SRC_EN 0x54
/* macro for wrapper status */
+#define PWRAP_GET_SWINF_2_FSM(x) (((x) >> 1) & 0x00000007)
#define PWRAP_GET_WACS_RDATA(x) (((x) >> 0) & 0x0000ffff)
#define PWRAP_GET_WACS_FSM(x) (((x) >> 16) & 0x00000007)
#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_DONE1 BIT(15)
/* macro for WACS FSM */
#define PWRAP_WACS_FSM_IDLE 0x00
@@ -74,6 +76,7 @@
#define PWRAP_CAP_DCM BIT(2)
#define PWRAP_CAP_INT1_EN BIT(3)
#define PWRAP_CAP_WDT_SRC1 BIT(4)
+#define PWRAP_CAP_ARB BIT(5)
/* defines for slave device wrapper registers */
enum dew_regs {
@@ -348,6 +351,10 @@ enum pwrap_regs {
PWRAP_ADC_RDATA_ADDR1,
PWRAP_ADC_RDATA_ADDR2,
+ /* MT6873 only regs */
+ PWRAP_SWINF_2_WDATA_31_0,
+ PWRAP_SWINF_2_RDATA_31_0,
+
/* MT7622 only regs */
PWRAP_STA,
PWRAP_CLR,
@@ -627,6 +634,17 @@ static int mt6797_regs[] = {
[PWRAP_DCM_DBC_PRD] = 0x1D4,
};
+static int mt6873_regs[] = {
+ [PWRAP_INIT_DONE2] = 0x0,
+ [PWRAP_TIMER_EN] = 0x3E0,
+ [PWRAP_INT_EN] = 0x448,
+ [PWRAP_WACS2_CMD] = 0xC80,
+ [PWRAP_SWINF_2_WDATA_31_0] = 0xC84,
+ [PWRAP_SWINF_2_RDATA_31_0] = 0xC94,
+ [PWRAP_WACS2_VLDCLR] = 0xCA4,
+ [PWRAP_WACS2_RDATA] = 0xCA8,
+};
+
static int mt7622_regs[] = {
[PWRAP_MUX_SEL] = 0x0,
[PWRAP_WRAP_EN] = 0x4,
@@ -1045,6 +1063,7 @@ enum pwrap_type {
PWRAP_MT6765,
PWRAP_MT6779,
PWRAP_MT6797,
+ PWRAP_MT6873,
PWRAP_MT7622,
PWRAP_MT8135,
PWRAP_MT8173,
@@ -1108,16 +1127,30 @@ static void pwrap_writel(struct pmic_wrapper *wrp, u32 val, enum pwrap_regs reg)
static bool pwrap_is_fsm_idle(struct pmic_wrapper *wrp)
{
- u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+ u32 val;
+ bool ret;
+
+ val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ ret = (PWRAP_GET_SWINF_2_FSM(val) == PWRAP_WACS_FSM_IDLE);
+ else
+ ret = (PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE);
- return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE;
+ return ret;
}
static bool pwrap_is_fsm_vldclr(struct pmic_wrapper *wrp)
{
- u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+ u32 val;
+ bool ret;
+
+ val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ ret = (PWRAP_GET_SWINF_2_FSM(val) == PWRAP_WACS_FSM_WFVLDCLR);
+ else
+ ret = (PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_WFVLDCLR);
- return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_WFVLDCLR;
+ return ret;
}
/*
@@ -1172,13 +1205,21 @@ static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
return ret;
}
- pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD);
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ pwrap_writel(wrp, adr, PWRAP_WACS2_CMD);
+ else
+ pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD);
ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr);
if (ret)
return ret;
- *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, PWRAP_WACS2_RDATA));
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp,
+ PWRAP_SWINF_2_RDATA_31_0));
+ else
+ *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp,
+ PWRAP_WACS2_RDATA));
pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR);
@@ -1228,8 +1269,13 @@ static int pwrap_write16(struct pmic_wrapper *wrp, u32 adr, u32 wdata)
return ret;
}
- pwrap_writel(wrp, (1 << 31) | ((adr >> 1) << 16) | wdata,
- PWRAP_WACS2_CMD);
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB)) {
+ pwrap_writel(wrp, wdata, PWRAP_SWINF_2_WDATA_31_0);
+ pwrap_writel(wrp, BIT(29) | adr, PWRAP_WACS2_CMD);
+ } else {
+ pwrap_writel(wrp, BIT(31) | ((adr >> 1) << 16) | wdata,
+ PWRAP_WACS2_CMD);
+ }
return 0;
}
@@ -1485,6 +1531,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
case PWRAP_MT7622:
pwrap_writel(wrp, 0, PWRAP_CIPHER_EN);
break;
+ case PWRAP_MT6873:
case PWRAP_MT8183:
break;
}
@@ -1921,6 +1968,19 @@ static const struct pmic_wrapper_type pwrap_mt6797 = {
.init_soc_specific = NULL,
};
+static struct pmic_wrapper_type pwrap_mt6873 = {
+ .regs = mt6873_regs,
+ .type = PWRAP_MT6873,
+ .arb_en_all = 0x777f,
+ .int_en_all = BIT(4) | BIT(5),
+ .int1_en_all = 0,
+ .spi_w = PWRAP_MAN_CMD_SPI_WRITE,
+ .wdt_src = PWRAP_WDT_SRC_MASK_ALL,
+ .caps = PWRAP_CAP_ARB,
+ .init_reg_clock = pwrap_common_init_reg_clock,
+ .init_soc_specific = NULL,
+};
+
static const struct pmic_wrapper_type pwrap_mt7622 = {
.regs = mt7622_regs,
.type = PWRAP_MT7622,
@@ -1999,6 +2059,9 @@ static const struct of_device_id of_pwrap_match_tbl[] = {
.compatible = "mediatek,mt6797-pwrap",
.data = &pwrap_mt6797,
}, {
+ .compatible = "mediatek,mt6873-pwrap",
+ .data = &pwrap_mt6873,
+ }, {
.compatible = "mediatek,mt7622-pwrap",
.data = &pwrap_mt7622,
}, {
@@ -2022,6 +2085,7 @@ MODULE_DEVICE_TABLE(of, of_pwrap_match_tbl);
static int pwrap_probe(struct platform_device *pdev)
{
int ret, irq;
+ u32 rdata;
struct pmic_wrapper *wrp;
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_slave_id = NULL;
@@ -2116,14 +2180,22 @@ static int pwrap_probe(struct platform_device *pdev)
}
}
- if (!(pwrap_readl(wrp, PWRAP_WACS2_RDATA) & PWRAP_STATE_INIT_DONE0)) {
+ if (!HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ rdata = pwrap_readl(wrp, PWRAP_WACS2_RDATA) &
+ PWRAP_STATE_INIT_DONE0;
+ else
+ 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;
}
/* Initialize watchdog, may not be done by the bootloader */
- pwrap_writel(wrp, 0xf, PWRAP_WDT_UNIT);
+ if (!(HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB)))
+ pwrap_writel(wrp, 0xf, PWRAP_WDT_UNIT);
+
/*
* Since STAUPD was not used on mt8173 platform,
* so STAUPD of WDT_SRC which should be turned off
@@ -2132,7 +2204,11 @@ static int pwrap_probe(struct platform_device *pdev)
if (HAS_CAP(wrp->master->caps, PWRAP_CAP_WDT_SRC1))
pwrap_writel(wrp, wrp->master->wdt_src, PWRAP_WDT_SRC_EN_1);
- pwrap_writel(wrp, 0x1, PWRAP_TIMER_EN);
+ if (HAS_CAP(wrp->master->caps, PWRAP_CAP_ARB))
+ pwrap_writel(wrp, 0x3, PWRAP_TIMER_EN);
+ else
+ pwrap_writel(wrp, 0x1, PWRAP_TIMER_EN);
+
pwrap_writel(wrp, wrp->master->int_en_all, PWRAP_INT_EN);
/*
* We add INT1 interrupt to handle starvation and request exception
--
2.6.4
