linux-kernel - [PATCH 04/13] media: qcom: camss: csiphy: Add an init callback to CSI PHY devices

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Message-ID: <20240709160656.31146-5-quic_depengs@quicinc.com>
Date: Tue, 9 Jul 2024 21:36:47 +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 04/13] media: qcom: camss: csiphy: Add an init callback to CSI PHY devices

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

Add a nop callback to CSIPHY devices. Later patches will enumerate with
enabling code.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Signed-off-by: Depeng Shao <quic_depengs@...cinc.com>
Reviewed-by: Elliot Berman <quic_eberman@...cinc.com>
---
 drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c | 6 ++++++
 drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c | 6 ++++++
 drivers/media/platform/qcom/camss/camss-csiphy.c         | 4 ++++
 drivers/media/platform/qcom/camss/camss-csiphy.h         | 1 +
 4 files changed, 17 insertions(+)

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c
index cd4a8c369234..9d67e7fa6366 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c
@@ -180,6 +180,11 @@ static irqreturn_t csiphy_isr(int irq, void *dev)
 	return IRQ_HANDLED;
 }
 
+static int csiphy_init(struct csiphy_device *csiphy)
+{
+	return 0;
+}
+
 const struct csiphy_hw_ops csiphy_ops_2ph_1_0 = {
 	.get_lane_mask = csiphy_get_lane_mask,
 	.hw_version_read = csiphy_hw_version_read,
@@ -187,4 +192,5 @@ const struct csiphy_hw_ops csiphy_ops_2ph_1_0 = {
 	.lanes_enable = csiphy_lanes_enable,
 	.lanes_disable = csiphy_lanes_disable,
 	.isr = csiphy_isr,
+	.init = csiphy_init,
 };
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 bc4834ee2dcc..b60c32a195df 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
@@ -581,6 +581,11 @@ static void csiphy_lanes_disable(struct csiphy_device *csiphy,
 			  CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(6));
 }
 
+static int csiphy_init(struct csiphy_device *csiphy)
+{
+	return 0;
+}
+
 const struct csiphy_hw_ops csiphy_ops_3ph_1_0 = {
 	.get_lane_mask = csiphy_get_lane_mask,
 	.hw_version_read = csiphy_hw_version_read,
@@ -588,4 +593,5 @@ const struct csiphy_hw_ops csiphy_ops_3ph_1_0 = {
 	.lanes_enable = csiphy_lanes_enable,
 	.lanes_disable = csiphy_lanes_disable,
 	.isr = csiphy_isr,
+	.init = csiphy_init,
 };
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
index 2f7361dfd461..ea5c7078ec8e 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
@@ -576,6 +576,10 @@ int msm_csiphy_subdev_init(struct camss *camss,
 	csiphy->cfg.combo_mode = 0;
 	csiphy->res = &res->csiphy;
 
+	ret = csiphy->res->hw_ops->init(csiphy);
+	if (ret)
+		return ret;
+
 	/* Memory */
 
 	csiphy->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h
index 47f0b6b09eba..bdf9a9c8bacc 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -71,6 +71,7 @@ struct csiphy_hw_ops {
 	void (*lanes_disable)(struct csiphy_device *csiphy,
 			      struct csiphy_config *cfg);
 	irqreturn_t (*isr)(int irq, void *dev);
+	int (*init)(struct csiphy_device *csiphy);
 };
 
 struct csiphy_subdev_resources {
-- 
2.34.1