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227 lines
6.5 KiB
227 lines
6.5 KiB
From 16bebe4ad52083316907fb7149c797cd331f5948 Mon Sep 17 00:00:00 2001
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From: Sean Wang <sean.wang@mediatek.com>
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Date: Wed, 18 Oct 2017 16:28:45 +0800
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Subject: [PATCH 119/224] soc: mediatek: pwrap: refactor pwrap_init for the
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various PMIC types
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pwrap initialization is highly associated with the base SoC and the
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target PMICs, so slight refactorization is made here for allowing
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pwrap_init to run on those PMICs with different capability from the
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previous MediaTek PMICs and the determination for the enablement of the
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pwrap capability depending on PMIC type. Apart from this, the patch
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makes the driver more extensible especially when more PMICs join into
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the pwrap driver.
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Signed-off-by: Chenglin Xu <chenglin.xu@mediatek.com>
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Signed-off-by: Sean Wang <sean.wang@mediatek.com>
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Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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---
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drivers/soc/mediatek/mtk-pmic-wrap.c | 130 ++++++++++++++++++++++++-----------
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1 file changed, 90 insertions(+), 40 deletions(-)
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--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
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+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
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@@ -70,6 +70,12 @@
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PWRAP_WDT_SRC_EN_HARB_STAUPD_DLE | \
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PWRAP_WDT_SRC_EN_HARB_STAUPD_ALE)
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+/* Group of bits used for shown slave capability */
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+#define PWRAP_SLV_CAP_SPI BIT(0)
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+#define PWRAP_SLV_CAP_DUALIO BIT(1)
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+#define PWRAP_SLV_CAP_SECURITY BIT(2)
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+#define HAS_CAP(_c, _x) (((_c) & (_x)) == (_x))
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+
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/* defines for slave device wrapper registers */
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enum dew_regs {
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PWRAP_DEW_BASE,
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@@ -501,6 +507,8 @@ struct pmic_wrapper;
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struct pwrap_slv_type {
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const u32 *dew_regs;
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enum pmic_type type;
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+ /* Flags indicating the capability for the target slave */
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+ u32 caps;
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/*
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* pwrap operations are highly associated with the PMIC types,
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* so the pointers added increases flexibility allowing determination
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@@ -787,6 +795,37 @@ static int pwrap_init_sidly(struct pmic_
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return 0;
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}
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+static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
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+{
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+ int ret;
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+ u32 rdata;
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+
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+ /* Enable dual IO mode */
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+ pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
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+
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+ /* Check IDLE & INIT_DONE in advance */
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+ ret = pwrap_wait_for_state(wrp,
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+ pwrap_is_fsm_idle_and_sync_idle);
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+ if (ret) {
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+ dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
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+ return ret;
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+ }
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+
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+ pwrap_writel(wrp, 1, PWRAP_DIO_EN);
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+
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+ /* Read Test */
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+ pwrap_read(wrp,
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+ wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
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+ if (rdata != PWRAP_DEW_READ_TEST_VAL) {
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+ dev_err(wrp->dev,
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+ "Read failed on DIO mode: 0x%04x!=0x%04x\n",
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+ PWRAP_DEW_READ_TEST_VAL, rdata);
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+ return -EFAULT;
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+ }
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+
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+ return 0;
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+}
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+
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static int pwrap_mt8135_init_reg_clock(struct pmic_wrapper *wrp)
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{
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pwrap_writel(wrp, 0x4, PWRAP_CSHEXT);
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@@ -935,6 +974,30 @@ static int pwrap_init_cipher(struct pmic
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return 0;
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}
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+static int pwrap_init_security(struct pmic_wrapper *wrp)
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+{
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+ int ret;
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+
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+ /* Enable encryption */
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+ ret = pwrap_init_cipher(wrp);
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+ if (ret)
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+ return ret;
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+
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+ /* Signature checking - using CRC */
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+ if (pwrap_write(wrp,
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+ wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1))
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+ return -EFAULT;
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+
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+ pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
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+ pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
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+ pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL],
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+ PWRAP_SIG_ADR);
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+ pwrap_writel(wrp,
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+ wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN);
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+
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+ return 0;
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+}
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+
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static int pwrap_mt8135_init_soc_specific(struct pmic_wrapper *wrp)
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{
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/* enable pwrap events and pwrap bridge in AP side */
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@@ -995,7 +1058,6 @@ static int pwrap_mt2701_init_soc_specifi
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static int pwrap_init(struct pmic_wrapper *wrp)
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{
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int ret;
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- u32 rdata;
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reset_control_reset(wrp->rstc);
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if (wrp->rstc_bridge)
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@@ -1007,10 +1069,12 @@ static int pwrap_init(struct pmic_wrappe
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pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD);
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}
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- /* Reset SPI slave */
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- ret = pwrap_reset_spislave(wrp);
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- if (ret)
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- return ret;
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+ if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) {
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+ /* Reset SPI slave */
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+ ret = pwrap_reset_spislave(wrp);
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+ if (ret)
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+ return ret;
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+ }
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pwrap_writel(wrp, 1, PWRAP_WRAP_EN);
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@@ -1022,45 +1086,26 @@ static int pwrap_init(struct pmic_wrappe
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if (ret)
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return ret;
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- /* Setup serial input delay */
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- ret = pwrap_init_sidly(wrp);
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- if (ret)
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- return ret;
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-
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- /* Enable dual IO mode */
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- pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
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-
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- /* Check IDLE & INIT_DONE in advance */
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- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);
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- if (ret) {
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- dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
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- return ret;
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+ if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) {
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+ /* Setup serial input delay */
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+ ret = pwrap_init_sidly(wrp);
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+ if (ret)
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+ return ret;
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}
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- pwrap_writel(wrp, 1, PWRAP_DIO_EN);
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-
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- /* Read Test */
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- pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
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- if (rdata != PWRAP_DEW_READ_TEST_VAL) {
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- dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n",
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- PWRAP_DEW_READ_TEST_VAL, rdata);
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- return -EFAULT;
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+ if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_DUALIO)) {
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+ /* Enable dual I/O mode */
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+ ret = pwrap_init_dual_io(wrp);
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+ if (ret)
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+ return ret;
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}
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- /* Enable encryption */
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- ret = pwrap_init_cipher(wrp);
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- if (ret)
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- return ret;
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-
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- /* Signature checking - using CRC */
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- if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1))
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- return -EFAULT;
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-
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- pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
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- pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
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- pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL],
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- PWRAP_SIG_ADR);
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- pwrap_writel(wrp, wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN);
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+ if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SECURITY)) {
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+ /* Enable security on bus */
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+ ret = pwrap_init_security(wrp);
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+ if (ret)
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+ return ret;
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+ }
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if (wrp->master->type == PWRAP_MT8135)
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pwrap_writel(wrp, 0x7, PWRAP_RRARB_EN);
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@@ -1116,6 +1161,8 @@ static const struct regmap_config pwrap_
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static const struct pwrap_slv_type pmic_mt6323 = {
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.dew_regs = mt6323_regs,
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.type = PMIC_MT6323,
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+ .caps = PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO |
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+ PWRAP_SLV_CAP_SECURITY,
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.pwrap_read = pwrap_read16,
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.pwrap_write = pwrap_write16,
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};
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@@ -1123,6 +1170,7 @@ static const struct pwrap_slv_type pmic_
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static const struct pwrap_slv_type pmic_mt6380 = {
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.dew_regs = NULL,
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.type = PMIC_MT6380,
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+ .caps = 0,
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.pwrap_read = pwrap_read32,
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.pwrap_write = pwrap_write32,
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};
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@@ -1130,6 +1178,8 @@ static const struct pwrap_slv_type pmic_
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static const struct pwrap_slv_type pmic_mt6397 = {
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.dew_regs = mt6397_regs,
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.type = PMIC_MT6397,
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+ .caps = PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO |
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+ PWRAP_SLV_CAP_SECURITY,
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.pwrap_read = pwrap_read16,
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.pwrap_write = pwrap_write16,
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};
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