diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0117-soc-mediatek-pwrap-add-pwrap_read32-for-reading-in-3.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0117-soc-mediatek-pwrap-add-pwrap_read32-for-reading-in-3.patch | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0117-soc-mediatek-pwrap-add-pwrap_read32-for-reading-in-3.patch b/target/linux/mediatek/patches-4.14/0117-soc-mediatek-pwrap-add-pwrap_read32-for-reading-in-3.patch new file mode 100644 index 0000000000..c178ddca7a --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0117-soc-mediatek-pwrap-add-pwrap_read32-for-reading-in-3.patch @@ -0,0 +1,139 @@ +From 9c37953bd08daa3ca227098d763e980d1898add3 Mon Sep 17 00:00:00 2001 +From: Sean Wang <sean.wang@mediatek.com> +Date: Wed, 18 Oct 2017 16:28:43 +0800 +Subject: [PATCH 117/224] soc: mediatek: pwrap: add pwrap_read32 for reading in + 32-bit mode + +Some regulators such as MediaTek MT6380 has to be read in 32-bit mode. +So the patch adds pwrap_read32, rename old pwrap_read into pwrap_read16 +and one function pointer is introduced for increasing flexibility allowing +the determination which mode is used by the pwrap slave detection through +device tree. + +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> +Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> +--- + drivers/soc/mediatek/mtk-pmic-wrap.c | 55 +++++++++++++++++++++++++++++++++++- + 1 file changed, 54 insertions(+), 1 deletion(-) + +diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c +index f095faac1e04..06930e2ebe4c 100644 +--- a/drivers/soc/mediatek/mtk-pmic-wrap.c ++++ b/drivers/soc/mediatek/mtk-pmic-wrap.c +@@ -487,6 +487,7 @@ static int mt8135_regs[] = { + + enum pmic_type { + PMIC_MT6323, ++ PMIC_MT6380, + PMIC_MT6397, + }; + +@@ -496,9 +497,16 @@ enum pwrap_type { + PWRAP_MT8173, + }; + ++struct pmic_wrapper; + struct pwrap_slv_type { + const u32 *dew_regs; + enum pmic_type type; ++ /* ++ * pwrap operations are highly associated with the PMIC types, ++ * so the pointers added increases flexibility allowing determination ++ * which type is used by the detection through device tree. ++ */ ++ int (*pwrap_read)(struct pmic_wrapper *wrp, u32 adr, u32 *rdata); + }; + + struct pmic_wrapper { +@@ -609,7 +617,7 @@ static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata) + return 0; + } + +-static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) ++static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) + { + int ret; + +@@ -632,6 +640,39 @@ static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) + return 0; + } + ++static int pwrap_read32(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) ++{ ++ int ret, msb; ++ ++ *rdata = 0; ++ for (msb = 0; msb < 2; msb++) { ++ ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); ++ if (ret) { ++ pwrap_leave_fsm_vldclr(wrp); ++ return ret; ++ } ++ ++ pwrap_writel(wrp, ((msb << 30) | (adr << 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)) << (16 * msb)); ++ ++ pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR); ++ } ++ ++ return 0; ++} ++ ++static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) ++{ ++ return wrp->slave->pwrap_read(wrp, adr, rdata); ++} ++ + static int pwrap_regmap_read(void *context, u32 adr, u32 *rdata) + { + return pwrap_read(context, adr, rdata); +@@ -752,6 +793,8 @@ static int pwrap_mt2701_init_reg_clock(struct pmic_wrapper *wrp) + pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START); + pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END); + break; ++ default: ++ break; + } + + return 0; +@@ -815,6 +858,8 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) + pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_EN], + 0x1); + break; ++ default: ++ break; + } + + /* wait for cipher data ready@AP */ +@@ -1036,11 +1081,19 @@ static const struct regmap_config pwrap_regmap_config = { + static const struct pwrap_slv_type pmic_mt6323 = { + .dew_regs = mt6323_regs, + .type = PMIC_MT6323, ++ .pwrap_read = pwrap_read16, ++}; ++ ++static const struct pwrap_slv_type pmic_mt6380 = { ++ .dew_regs = NULL, ++ .type = PMIC_MT6380, ++ .pwrap_read = pwrap_read32, + }; + + static const struct pwrap_slv_type pmic_mt6397 = { + .dew_regs = mt6397_regs, + .type = PMIC_MT6397, ++ .pwrap_read = pwrap_read16, + }; + + static const struct of_device_id of_slave_match_tbl[] = { +-- +2.11.0 + |