linux-kernel - [PATCH 12/13] media: qcom: camss: Add sm8550 support

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Message-ID: <20240709160656.31146-13-quic_depengs@quicinc.com>
Date: Tue, 9 Jul 2024 21:36:55 +0530
From: Depeng Shao <quic_depengs@...cinc.com>
To: <rfoss@...nel.org>, <todor.too@...il.com>, <bryan.odonoghue@...aro.org>,
        <mchehab@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>
CC: <quic_eberman@...cinc.com>, <quic_depengs@...cinc.com>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kernel@...cinc.com>
Subject: [PATCH 12/13] media: qcom: camss: Add sm8550 support

Add in functional logic throughout the code to support the SM8550.

Signed-off-by: Depeng Shao <quic_depengs@...cinc.com>
---
 .../media/platform/qcom/camss/camss-csid.c    | 21 +++++++++++++++++++
 .../qcom/camss/camss-csiphy-3ph-1-0.c         |  6 ++++++
 drivers/media/platform/qcom/camss/camss-vfe.c |  6 ++++++
 drivers/media/platform/qcom/camss/camss.h     |  1 +
 4 files changed, 34 insertions(+)

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index 858db5d4ca75..90fba25db4c6 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -1013,6 +1013,7 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 {
 	struct device *dev = camss->dev;
 	struct platform_device *pdev = to_platform_device(dev);
+	struct resource *top_res;
 	int i, j;
 	int ret;
 
@@ -1040,6 +1041,26 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 		else
 			csid->base = csid->res->parent_dev_ops->get_base_address(camss, id)
 				 + VFE_480_CSID_OFFSET;
+	} else if (camss->res->version == CAMSS_8550) {
+		/* for titan 780, CSID lite registers are inside the VFE lite region,
+		 * between the VFE "top" and "bus" registers. this requires
+		 * VFE to be initialized before CSID
+		 */
+		if (csid_is_lite(csid))
+			csid->base =  csid->res->parent_dev_ops->get_base_address(camss, id);
+		else {
+			csid->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
+			/* CSID "top" is a new function in Titan780.
+			 * CSID can connect to VFE & SFE(Sensor Front End).
+			 * This connection is ontrolled by CSID "top" registers.
+			 * CSID "top" registers at only one region.
+			 */
+			top_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[1]);
+			csid->top_base = ioremap(top_res->start, resource_size(top_res));
+		}
+
+		if (IS_ERR(csid->base))
+			return PTR_ERR(csid->base);
 	} else {
 		csid->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
 		if (IS_ERR(csid->base))
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 b6d5a27b94a6..53c46c2e5896 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
@@ -631,6 +631,7 @@ static bool csiphy_is_gen2(u32 version)
 	case CAMSS_845:
 	case CAMSS_8250:
 	case CAMSS_8280XP:
+	case CAMSS_8550:
 		ret = true;
 		break;
 	}
@@ -718,6 +719,11 @@ static int csiphy_init(struct csiphy_device *csiphy)
 		regs->lane_regs = &lane_regs_sc8280xp[0];
 		regs->lane_array_size = ARRAY_SIZE(lane_regs_sc8280xp);
 		break;
+	case CAMSS_8550:
+		regs->lane_regs = &lane_regs_sm8550[0];
+		regs->lane_array_size = ARRAY_SIZE(lane_regs_sm8550);
+		regs->offset = 0x1000;
+		break;
 	default:
 		WARN(1, "unknown csiphy version\n");
 		return -ENODEV;
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 83c5a36d071f..479474c1cd95 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -338,6 +338,7 @@ static u32 vfe_src_pad_code(struct vfe_line *line, u32 sink_code,
 	case CAMSS_845:
 	case CAMSS_8250:
 	case CAMSS_8280XP:
+	case CAMSS_8550:
 		switch (sink_code) {
 		case MEDIA_BUS_FMT_YUYV8_1X16:
 		{
@@ -408,6 +409,10 @@ int vfe_reset(struct vfe_device *vfe)
 
 	reinit_completion(&vfe->reset_complete);
 
+	/* The reset has been moved to csid in 8550 */
+	if (vfe->camss->res->version == CAMSS_8550)
+		return 0;
+
 	vfe->res->hw_ops->global_reset(vfe);
 
 	time = wait_for_completion_timeout(&vfe->reset_complete,
@@ -1695,6 +1700,7 @@ static int vfe_bpl_align(struct vfe_device *vfe)
 	case CAMSS_845:
 	case CAMSS_8250:
 	case CAMSS_8280XP:
+	case CAMSS_8550:
 		ret = 16;
 		break;
 	default:
diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h
index 65fcebd42c4b..feac83510a17 100644
--- a/drivers/media/platform/qcom/camss/camss.h
+++ b/drivers/media/platform/qcom/camss/camss.h
@@ -79,6 +79,7 @@ enum camss_version {
 	CAMSS_845,
 	CAMSS_8250,
 	CAMSS_8280XP,
+	CAMSS_8550,
 };
 
 enum icc_count {
-- 
2.34.1