linux-kernel - [PATCH 2/6] scsi: ufs: exynos: move ufs shareability value to drvdata

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Message-ID: <20250226220414.343659-3-peter.griffin@linaro.org>
Date: Wed, 26 Feb 2025 22:04:10 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: alim.akhtar@...sung.com,
	James.Bottomley@...senPartnership.com,
	martin.petersen@...cle.com,
	krzk@...nel.org
Cc: linux-scsi@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	willmcvicker@...gle.com,
	tudor.ambarus@...aro.org,
	andre.draszik@...aro.org,
	ebiggers@...nel.org,
	bvanassche@....org,
	kernel-team@...roid.com,
	Peter Griffin <peter.griffin@...aro.org>,
	stable@...r.kernel.org
Subject: [PATCH 2/6] scsi: ufs: exynos: move ufs shareability value to drvdata

gs101 IO coherency shareability bits differ from exynosauto SoC. To
support both SoCs move this info the SoC drvdata.

Currently both the value and mask are the same for both gs101 and
exynosauto, thus we use the same value.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
Fixes: d11e0a318df8 ("scsi: ufs: exynos: Add support for Tensor gs101 SoC")
Cc: stable@...r.kernel.org
---
 drivers/ufs/host/ufs-exynos.c | 20 ++++++++++++++------
 drivers/ufs/host/ufs-exynos.h |  2 ++
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index cd750786187c..a00256ede659 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -92,11 +92,16 @@
 				 UIC_TRANSPORT_NO_CONNECTION_RX |\
 				 UIC_TRANSPORT_BAD_TC)
 
-/* FSYS UFS Shareability */
-#define UFS_WR_SHARABLE		BIT(2)
-#define UFS_RD_SHARABLE		BIT(1)
-#define UFS_SHARABLE		(UFS_WR_SHARABLE | UFS_RD_SHARABLE)
-#define UFS_SHAREABILITY_OFFSET	0x710
+/* UFS Shareability */
+#define UFS_EXYNOSAUTO_WR_SHARABLE	BIT(2)
+#define UFS_EXYNOSAUTO_RD_SHARABLE	BIT(1)
+#define UFS_EXYNOSAUTO_SHARABLE		(UFS_EXYNOSAUTO_WR_SHARABLE | \
+					 UFS_EXYNOSAUTO_RD_SHARABLE)
+#define UFS_GS101_WR_SHARABLE		BIT(1)
+#define UFS_GS101_RD_SHARABLE		BIT(0)
+#define UFS_GS101_SHARABLE		(UFS_GS101_WR_SHARABLE | \
+					 UFS_GS101_RD_SHARABLE)
+#define UFS_SHAREABILITY_OFFSET		0x710
 
 /* Multi-host registers */
 #define MHCTRL			0xC4
@@ -210,7 +215,7 @@ static int exynos_ufs_shareability(struct exynos_ufs *ufs)
 	if (ufs->sysreg) {
 		return regmap_update_bits(ufs->sysreg,
 					  ufs->shareability_reg_offset,
-					  UFS_SHARABLE, UFS_SHARABLE);
+					  ufs->shareability, ufs->shareability);
 	}
 
 	return 0;
@@ -1193,6 +1198,7 @@ static inline void exynos_ufs_priv_init(struct ufs_hba *hba,
 {
 	ufs->hba = hba;
 	ufs->opts = ufs->drv_data->opts;
+	ufs->shareability = ufs->drv_data->shareability;
 	ufs->rx_sel_idx = PA_MAXDATALANES;
 	if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX)
 		ufs->rx_sel_idx = 0;
@@ -2034,6 +2040,7 @@ static const struct exynos_ufs_drv_data exynosauto_ufs_drvs = {
 	.opts			= EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
 				  EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
 				  EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
+	.shareability		= UFS_EXYNOSAUTO_SHARABLE,
 	.drv_init		= exynosauto_ufs_drv_init,
 	.post_hce_enable	= exynosauto_ufs_post_hce_enable,
 	.pre_link		= exynosauto_ufs_pre_link,
@@ -2135,6 +2142,7 @@ static const struct exynos_ufs_drv_data gs101_ufs_drvs = {
 	.opts			= EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
 				  EXYNOS_UFS_OPT_UFSPR_SECURE |
 				  EXYNOS_UFS_OPT_TIMER_TICK_SELECT,
+	.shareability		= UFS_GS101_SHARABLE,
 	.drv_init		= gs101_ufs_drv_init,
 	.pre_link		= gs101_ufs_pre_link,
 	.post_link		= gs101_ufs_post_link,
diff --git a/drivers/ufs/host/ufs-exynos.h b/drivers/ufs/host/ufs-exynos.h
index 9670dc138d1e..78bd13dc2d70 100644
--- a/drivers/ufs/host/ufs-exynos.h
+++ b/drivers/ufs/host/ufs-exynos.h
@@ -181,6 +181,7 @@ struct exynos_ufs_drv_data {
 	struct exynos_ufs_uic_attr *uic_attr;
 	unsigned int quirks;
 	unsigned int opts;
+	u32 shareability;
 	/* SoC's specific operations */
 	int (*drv_init)(struct exynos_ufs *ufs);
 	int (*pre_link)(struct exynos_ufs *ufs);
@@ -231,6 +232,7 @@ struct exynos_ufs {
 	const struct exynos_ufs_drv_data *drv_data;
 	struct regmap *sysreg;
 	u32 shareability_reg_offset;
+	u32 shareability;
 
 	u32 opts;
 #define EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL		BIT(0)
-- 
2.48.1.658.g4767266eb4-goog