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Subject[PATCH v4 4/7] soc: mediatek: pwrap: update pwrap_init without slave programming
Date
From: Sean Wang <sean.wang@mediatek.com>

pwrap initialization is highly associated with the base SoC, so
update here for allowing pwrap_init without slave program which would be
used to those PMICs without extra encryption on bus such as MT6380.

Signed-off-by: Chenglin Xu <chenglin.xu@mediatek.com>
Signed-off-by: Chen Zhong <chen.zhong@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/soc/mediatek/mtk-pmic-wrap.c | 91 +++++++++++++++++++++---------------
1 file changed, 54 insertions(+), 37 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 27d7ccc..9c6d855 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -531,6 +531,7 @@ struct pmic_wrapper_type {
u32 spi_w;
u32 wdt_src;
int has_bridge:1;
+ int slv_program:1;
int (*init_reg_clock)(struct pmic_wrapper *wrp);
int (*init_soc_specific)(struct pmic_wrapper *wrp);
};
@@ -999,9 +1000,12 @@ static int pwrap_init(struct pmic_wrapper *wrp)
}

/* Reset SPI slave */
- ret = pwrap_reset_spislave(wrp);
- if (ret)
- return ret;
+
+ if (wrp->master->slv_program) {
+ ret = pwrap_reset_spislave(wrp);
+ if (ret)
+ return ret;
+ }

pwrap_writel(wrp, 1, PWRAP_WRAP_EN);

@@ -1013,45 +1017,52 @@ static int pwrap_init(struct pmic_wrapper *wrp)
if (ret)
return ret;

- /* Setup serial input delay */
- ret = pwrap_init_sidly(wrp);
- if (ret)
- return ret;
+ if (wrp->master->slv_program) {
+ /* Setup serial input delay */
+ ret = pwrap_init_sidly(wrp);
+ if (ret)
+ return ret;

- /* Enable dual IO mode */
- pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
+ /* Enable dual IO mode */
+ 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);
- if (ret) {
- dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
- return ret;
- }
+ /* Check IDLE & INIT_DONE in advance */
+ ret = pwrap_wait_for_state(wrp,
+ pwrap_is_fsm_idle_and_sync_idle);
+ if (ret) {
+ dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
+ return ret;
+ }

- pwrap_writel(wrp, 1, PWRAP_DIO_EN);
+ pwrap_writel(wrp, 1, PWRAP_DIO_EN);

- /* Read Test */
- 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",
+ /* Read Test */
+ pwrap_read(wrp,
+ wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
+ if (rdata != PWRAP_DEW_READ_TEST_VAL) {
+ dev_err(wrp->dev,
+ "Read failed on DIO mode: 0x%04x!=0x%04x\n",
PWRAP_DEW_READ_TEST_VAL, rdata);
- return -EFAULT;
- }
-
- /* Enable encryption */
- ret = pwrap_init_cipher(wrp);
- if (ret)
- return ret;
+ return -EFAULT;
+ }

- /* Signature checking - using CRC */
- if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1))
- return -EFAULT;
+ /* Enable encryption */
+ ret = pwrap_init_cipher(wrp);
+ if (ret)
+ return ret;

- pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
- pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
- 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);
+ /* Signature checking - using CRC */
+ 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, 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)
pwrap_writel(wrp, 0x7, PWRAP_RRARB_EN);
@@ -1059,8 +1070,11 @@ static int pwrap_init(struct pmic_wrapper *wrp)
pwrap_writel(wrp, 0x1, PWRAP_WACS0_EN);
pwrap_writel(wrp, 0x1, PWRAP_WACS1_EN);
pwrap_writel(wrp, 0x1, PWRAP_WACS2_EN);
- pwrap_writel(wrp, 0x5, PWRAP_STAUPD_PRD);
- pwrap_writel(wrp, 0xff, PWRAP_STAUPD_GRPEN);
+
+ if (wrp->master->slv_program) {
+ pwrap_writel(wrp, 0x5, PWRAP_STAUPD_PRD);
+ pwrap_writel(wrp, 0xff, PWRAP_STAUPD_GRPEN);
+ }

if (wrp->master->init_soc_specific) {
ret = wrp->master->init_soc_specific(wrp);
@@ -1146,6 +1160,7 @@ static const struct pmic_wrapper_type pwrap_mt2701 = {
.spi_w = PWRAP_MAN_CMD_SPI_WRITE_NEW,
.wdt_src = PWRAP_WDT_SRC_MASK_ALL,
.has_bridge = 0,
+ .slv_program = 1,
.init_reg_clock = pwrap_mt2701_init_reg_clock,
.init_soc_specific = pwrap_mt2701_init_soc_specific,
};
@@ -1158,6 +1173,7 @@ static const struct pmic_wrapper_type pwrap_mt8135 = {
.spi_w = PWRAP_MAN_CMD_SPI_WRITE,
.wdt_src = PWRAP_WDT_SRC_MASK_ALL,
.has_bridge = 1,
+ .slv_program = 1,
.init_reg_clock = pwrap_mt8135_init_reg_clock,
.init_soc_specific = pwrap_mt8135_init_soc_specific,
};
@@ -1170,6 +1186,7 @@ static const struct pmic_wrapper_type pwrap_mt8173 = {
.spi_w = PWRAP_MAN_CMD_SPI_WRITE,
.wdt_src = PWRAP_WDT_SRC_MASK_NO_STAUPD,
.has_bridge = 0,
+ .slv_program = 1,
.init_reg_clock = pwrap_mt8173_init_reg_clock,
.init_soc_specific = pwrap_mt8173_init_soc_specific,
};
--
2.7.4
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