linux-kernel - [PATCH v5 14/17] media: qcom: camss: Support RDI3 for VFE 17x

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Date:   Mon, 11 Sep 2023 14:14:08 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     rfoss@...nel.org, todor.too@...il.com, bryan.odonoghue@...aro.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        mchehab@...nel.org, hverkuil-cisco@...all.nl,
        laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
        andrey.konovalov@...aro.org
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v5 14/17] media: qcom: camss: Support RDI3 for VFE 17x

Some VFEs have four RDIs apiece. Right now the ISR code has a hard-coded
value which tops-out at RDI2 meaning only three RDIs can be utilised in
practice.

Extend out the various routines in camss-vfe-17x.c to support the higher
RDI count.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Acked-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
 drivers/media/platform/qcom/camss/camss-vfe-170.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c b/drivers/media/platform/qcom/camss/camss-vfe-170.c
index 2ba7160b3bd1e..a5aa799501861 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-170.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c
@@ -209,7 +209,8 @@ static void vfe_global_reset(struct vfe_device *vfe)
 			 GLOBAL_RESET_CMD_IDLE_CGC	|
 			 GLOBAL_RESET_CMD_RDI0		|
 			 GLOBAL_RESET_CMD_RDI1		|
-			 GLOBAL_RESET_CMD_RDI2;
+			 GLOBAL_RESET_CMD_RDI2		|
+			 GLOBAL_RESET_CMD_RDI3;
 
 	writel_relaxed(BIT(31), vfe->base + VFE_IRQ_MASK_0);
 
@@ -343,7 +344,7 @@ static void vfe_violation_read(struct vfe_device *vfe)
 static irqreturn_t vfe_isr(int irq, void *dev)
 {
 	struct vfe_device *vfe = dev;
-	u32 status0, status1, vfe_bus_status[3];
+	u32 status0, status1, vfe_bus_status[VFE_LINE_NUM_MAX];
 	int i, wm;
 
 	status0 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_0);
@@ -352,7 +353,7 @@ static irqreturn_t vfe_isr(int irq, void *dev)
 	writel_relaxed(status0, vfe->base + VFE_IRQ_CLEAR_0);
 	writel_relaxed(status1, vfe->base + VFE_IRQ_CLEAR_1);
 
-	for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++) {
+	for (i = VFE_LINE_RDI0; i < vfe->line_num; i++) {
 		vfe_bus_status[i] = readl_relaxed(vfe->base + VFE_BUS_IRQ_STATUS(i));
 		writel_relaxed(vfe_bus_status[i], vfe->base + VFE_BUS_IRQ_CLEAR(i));
 	}
@@ -366,11 +367,11 @@ static irqreturn_t vfe_isr(int irq, void *dev)
 	if (status0 & STATUS_0_RESET_ACK)
 		vfe->isr_ops.reset_ack(vfe);
 
-	for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++)
+	for (i = VFE_LINE_RDI0; i < vfe->line_num; i++)
 		if (status0 & STATUS_0_RDI_REG_UPDATE(i))
 			vfe->isr_ops.reg_update(vfe, i);
 
-	for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++)
+	for (i = VFE_LINE_RDI0; i < vfe->line_num; i++)
 		if (status0 & STATUS_1_RDI_SOF(i))
 			vfe->isr_ops.sof(vfe, i);
 
-- 
2.42.0