[PATCH 06/16] media: qcom: camss: csiphy-3ph: Use an offset variable to find common control regs

[Depeng Shao <quic_depengs@quicinc.com>]

From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

New versions of the CSIPHY locate the control registers at offset 0x1000
not offset 0x800.

Provide a variable to base an offset from for the purposes of redirecting
the base offset for the new PHY regs layout.

The existing setup bases from 0x800, the new from 0x1000 with some of the
'EXT' registers dropped but the lower-order lane config regs at offset 0x00
and up the same as before.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Depeng Shao <quic_depengs@quicinc.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
---
 .../qcom/camss/camss-csiphy-3ph-1-0.c         | 67 ++++++++++++-------
 .../media/platform/qcom/camss/camss-csiphy.h  |  1 +
 2 files changed, 44 insertions(+), 24 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
index 2b8ff7fd1dd9..e44198686b55 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
@@ -42,11 +42,11 @@
 #define CSIPHY_3PH_LNn_CSI_LANE_CTRL15(n)	(0x03c + 0x100 * (n))
 #define CSIPHY_3PH_LNn_CSI_LANE_CTRL15_SWI_SOT_SYMBOL	0xb8
 
-#define CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(n)	(0x800 + 0x4 * (n))
+#define CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(offset, n)	((offset) + 0x4 * (n))
 #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL5_CLK_ENABLE	BIT(7)
 #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_COMMON_PWRDN_B	BIT(0)
 #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID	BIT(1)
-#define CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(n)	(0x8b0 + 0x4 * (n))
+#define CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(offset, n)	((offset) + 0xb0 + 0x4 * (n))
 
 #define CSIPHY_DEFAULT_PARAMS		0
 #define CSIPHY_LANE_ENABLE		1
@@ -321,19 +321,20 @@ csiphy_lane_regs lane_regs_sm8250[] = {
 static void csiphy_hw_version_read(struct csiphy_device *csiphy,
 				   struct device *dev)
 {
+	struct csiphy_device_regs *regs = csiphy->regs;
 	u32 hw_version;
 
-	writel(CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID,
-	       csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(6));
+	writel(CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID, csiphy->base +
+	       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 6));
 
 	hw_version = readl_relaxed(csiphy->base +
-				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(12));
+				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(regs->offset, 12));
 	hw_version |= readl_relaxed(csiphy->base +
-				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(13)) << 8;
+				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(regs->offset, 13)) << 8;
 	hw_version |= readl_relaxed(csiphy->base +
-				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(14)) << 16;
+				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(regs->offset, 14)) << 16;
 	hw_version |= readl_relaxed(csiphy->base +
-				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(15)) << 24;
+				   CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(regs->offset, 15)) << 24;
 
 	dev_dbg(dev, "CSIPHY 3PH HW Version = 0x%08x\n", hw_version);
 }
@@ -344,31 +345,39 @@ static void csiphy_hw_version_read(struct csiphy_device *csiphy,
  */
 static void csiphy_reset(struct csiphy_device *csiphy)
 {
-	writel_relaxed(0x1, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(0));
+	struct csiphy_device_regs *regs = csiphy->regs;
+
+	writel_relaxed(0x1, csiphy->base +
+		      CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 0));
 	usleep_range(5000, 8000);
-	writel_relaxed(0x0, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(0));
+	writel_relaxed(0x0, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 0));
 }
 
 static irqreturn_t csiphy_isr(int irq, void *dev)
 {
 	struct csiphy_device *csiphy = dev;
+	struct csiphy_device_regs *regs = csiphy->regs;
 	int i;
 
 	for (i = 0; i < 11; i++) {
 		int c = i + 22;
 		u8 val = readl_relaxed(csiphy->base +
-				       CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(i));
+				       CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(regs->offset, i));
 
 		writel_relaxed(val, csiphy->base +
-				    CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(c));
+			       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, c));
 	}
 
-	writel_relaxed(0x1, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(10));
-	writel_relaxed(0x0, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(10));
+	writel_relaxed(0x1, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 10));
+	writel_relaxed(0x0, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 10));
 
-	for (i = 22; i < 33; i++)
+	for (i = 22; i < 33; i++) {
 		writel_relaxed(0x0, csiphy->base +
-				    CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(i));
+			       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, i));
+	}
 
 	return IRQ_HANDLED;
 }
@@ -522,6 +531,7 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
 				s64 link_freq, u8 lane_mask)
 {
 	struct csiphy_lanes_cfg *c = &cfg->csi2->lane_cfg;
+	struct csiphy_device_regs *regs = csiphy->regs;
 	u8 settle_cnt;
 	u8 val;
 	int i;
@@ -532,16 +542,20 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
 	for (i = 0; i < c->num_data; i++)
 		val |= BIT(c->data[i].pos * 2);
 
-	writel_relaxed(val, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(5));
+	writel_relaxed(val, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 5));
 
 	val = CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_COMMON_PWRDN_B;
-	writel_relaxed(val, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(6));
+	writel_relaxed(val, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 6));
 
 	val = 0x02;
-	writel_relaxed(val, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(7));
+	writel_relaxed(val, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 7));
 
 	val = 0x00;
-	writel_relaxed(val, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(0));
+	writel_relaxed(val, csiphy->base +
+		       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 0));
 
 	if (csiphy_is_gen2(csiphy->camss->res->version))
 		csiphy_gen2_config_lanes(csiphy, settle_cnt);
@@ -549,18 +563,22 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
 		csiphy_gen1_config_lanes(csiphy, cfg, settle_cnt);
 
 	/* IRQ_MASK registers - disable all interrupts */
-	for (i = 11; i < 22; i++)
-		writel_relaxed(0, csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(i));
+	for (i = 11; i < 22; i++) {
+		writel_relaxed(0, csiphy->base +
+			       CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, i));
+	}
 }
 
 static void csiphy_lanes_disable(struct csiphy_device *csiphy,
 				 struct csiphy_config *cfg)
 {
+	struct csiphy_device_regs *regs = csiphy->regs;
+
 	writel_relaxed(0, csiphy->base +
-			  CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(5));
+			  CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 5));
 
 	writel_relaxed(0, csiphy->base +
-			  CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(6));
+			  CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(regs->offset, 6));
 }
 
 static int csiphy_init(struct csiphy_device *csiphy)
@@ -573,6 +591,7 @@ static int csiphy_init(struct csiphy_device *csiphy)
 		return -ENOMEM;
 
 	csiphy->regs = regs;
+	regs->offset = 0x800;
 
 	switch (csiphy->camss->res->version) {
 	case CAMSS_845:
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h
index 2371507b0a1f..8586cdc4be94 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -82,6 +82,7 @@ struct csiphy_subdev_resources {
 struct csiphy_device_regs {
 	const struct csiphy_lane_regs *lane_regs;
 	int lane_array_size;
+	u32 offset;
 };
 
 struct csiphy_device {
-- 
2.34.1