[S] Change in coreboot[main]: soc/mediatek/common: Add read16/write16 support for PMIF

[Yidi Lin (Code Review)]

Yidi Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/84774?usp=email )

Change subject: soc/mediatek/common: Add read16/write16 support for PMIF
......................................................................

soc/mediatek/common: Add read16/write16 support for PMIF

This patch is prepared for MT8196 PMIF driver.

BUG=none
TEST=emerge-corsola coreboot; emerge-geralt coreboot

Change-Id: I3adbbaaf247a8bbd99627cf089b5b55fcf4fb115
Signed-off-by: Yidi Lin 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84774
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
---
M src/soc/mediatek/common/include/soc/pmif_common.h
M src/soc/mediatek/common/pmif.c
2 files changed, 16 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Yu-Ping Wu: Looks good to me, approved

diff --git a/src/soc/mediatek/common/include/soc/pmif_common.h b/src/soc/mediatek/common/include/soc/pmif_common.h
index ee0a266..949b34f 100644
--- a/src/soc/mediatek/common/include/soc/pmif_common.h
+++ b/src/soc/mediatek/common/include/soc/pmif_common.h
@@ -30,6 +30,8 @@
    u32 pmifid;
    void (*read)(struct pmif *arb, u32 slvid, u32 reg, u32 *data);
    void (*write)(struct pmif *arb, u32 slvid, u32 reg, u32 data);
+	void (*read16)(struct pmif *arb, u32 slvid, u32 reg, u16 *data);
+	void (*write16)(struct pmif *arb, u32 slvid, u32 reg, u16 data);
    u32 (*read_field)(struct pmif *arb, u32 slvid, u32 reg, u32 mask, u32 shift);
    void (*write_field)(struct pmif *arb, u32 slvid, u32 reg, u32 val, u32 mask, u32 shift);
    int (*is_pmif_init_done)(struct pmif *arb);
@@ -86,6 +88,8 @@
 int mtk_pmif_init(void);
 void pmif_spmi_read(struct pmif *arb, u32 slvid, u32 reg, u32 *data);
 void pmif_spmi_write(struct pmif *arb, u32 slvid, u32 reg, u32 data);
+void pmif_spmi_read16(struct pmif *arb, u32 slvid, u32 reg, u16 *data);
+void pmif_spmi_write16(struct pmif *arb, u32 slvid, u32 reg, u16 data);
 u32 pmif_spmi_read_field(struct pmif *arb, u32 slvid, u32 reg, u32 mask, u32 shift);
 void pmif_spmi_write_field(struct pmif *arb, u32 slvid, u32 reg,
    		   u32 val, u32 mask, u32 shift);
diff --git a/src/soc/mediatek/common/pmif.c b/src/soc/mediatek/common/pmif.c
index 50fddc8..97da415 100644
--- a/src/soc/mediatek/common/pmif.c
+++ b/src/soc/mediatek/common/pmif.c
@@ -74,6 +74,18 @@
    pmif_send_cmd(arb, 1, PMIF_CMD_EXT_REG_LONG, slvid, reg, NULL, data, 1);
 }

+void pmif_spmi_read16(struct pmif *arb, u32 slvid, u32 reg, u16 *data)
+{
+	u32 rdata = 0;
+	pmif_send_cmd(arb, 0, PMIF_CMD_EXT_REG_LONG, slvid, reg, &rdata, 0, 2);
+	*data = (u16)rdata;
+}
+
+void pmif_spmi_write16(struct pmif *arb, u32 slvid, u32 reg, u16 data)
+{
+	pmif_send_cmd(arb, 1, PMIF_CMD_EXT_REG_LONG, slvid, reg, NULL, data, 2);
+}
+
 u32 pmif_spmi_read_field(struct pmif *arb, u32 slvid, u32 reg, u32 mask, u32 shift)
 {
    u32 data;