linux-kernel - [PATCH v3 16/33] media: atmel: atmel-isc: add his

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Message-ID: <20210413105731.610028-17-eugen.hristev@microchip.com>
Date:   Tue, 13 Apr 2021 13:57:14 +0300
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <devicetree@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <jacopo@...ndi.org>, <robh+dt@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Eugen Hristev <eugen.hristev@...rochip.com>
Subject: [PATCH v3 16/33] media: atmel: atmel-isc: add his_entry to register offsets

Add his_entry to the reg offsets struct.
This will allow different products to have a different reg offset for this
particular module.

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
 drivers/media/platform/atmel/atmel-isc-base.c    | 3 ++-
 drivers/media/platform/atmel/atmel-isc-regs.h    | 2 ++
 drivers/media/platform/atmel/atmel-isc.h         | 2 ++
 drivers/media/platform/atmel/atmel-sama5d2-isc.c | 1 +
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
index 11121943d2cb..2a619eef6aa3 100644
--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -1672,7 +1672,8 @@ static void isc_hist_count(struct isc_device *isc, u32 *min, u32 *max)
 	*min = 0;
 	*max = HIST_ENTRIES;
 
-	regmap_bulk_read(regmap, ISC_HIS_ENTRY, hist_entry, HIST_ENTRIES);
+	regmap_bulk_read(regmap, ISC_HIS_ENTRY + isc->offsets.his_entry,
+			 hist_entry, HIST_ENTRIES);
 
 	*hist_count = 0;
 	/*
diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
index 344668dcfcf4..a15c13e1a833 100644
--- a/drivers/media/platform/atmel/atmel-isc-regs.h
+++ b/drivers/media/platform/atmel/atmel-isc-regs.h
@@ -300,6 +300,8 @@
 /* Version Register */
 #define ISC_VERSION	0x0000040c
 
+/* Offset for version register specific to sama5d2 product */
+#define ISC_SAMA5D2_HIS_ENTRY_OFFSET	0
 /* Histogram Entry */
 #define ISC_HIS_ENTRY	0x00000410
 
diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
index 676a5be1ee8c..c5d956fd20a0 100644
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -154,6 +154,7 @@ struct isc_ctrls {
  * @his:		Offset for the HIS related registers
  * @dma:		Offset for the DMA related registers
  * @version:		Offset for the version register
+ * @his_entry:		Offset for the HIS entries registers
  */
 struct isc_reg_offsets {
 	u32 csc;
@@ -164,6 +165,7 @@ struct isc_reg_offsets {
 	u32 his;
 	u32 dma;
 	u32 version;
+	u32 his_entry;
 };
 
 /*
diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 10b70d4b04c4..0ff13198d732 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -242,6 +242,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 	isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET;
 	isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET;
 	isc->offsets.version = ISC_SAMA5D2_VERSION_OFFSET;
+	isc->offsets.his_entry = ISC_SAMA5D2_HIS_ENTRY_OFFSET;
 
 	/* sama5d2-isc - 8 bits per beat */
 	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
-- 
2.25.1