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From:   Eugen Hristev <eugen.hristev@microchip.com>
To:     <devicetree@vger.kernel.org>, <linux-media@vger.kernel.org>,
        <jacopo@jmondi.org>, <robh+dt@kernel.org>
CC:     <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>,
        Eugen Hristev <eugen.hristev@microchip.com>
Subject: [PATCH v3 12/33] media: atmel: atmel-isc: add RLP to register offsets
Date:   Tue, 13 Apr 2021 13:57:10 +0300
Message-ID: <20210413105731.610028-13-eugen.hristev@microchip.com>
In-Reply-To: <20210413105731.610028-1-eugen.hristev@microchip.com>
References: <20210413105731.610028-1-eugen.hristev@microchip.com>
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Precedence: bulk

The RLP submodule is a part of the atmel-isc pipeline, and stands for
Rounding,Limiting and Packaging. It used to extract specific data from the
ISC pipeline. For example if we want to output greyscale 8 bit, we would
use limiting to 8 bits, and packaging to Luma component only.
Add rlp 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@microchip.com>
---
Changes in v3:
- add module description in commit message

 drivers/media/platform/atmel/atmel-isc-base.c    | 4 ++--
 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(+), 2 deletions(-)

diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
index b2067d75499b..317172959370 100644
--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -718,8 +718,8 @@ static int isc_configure(struct isc_device *isc)
 
 	regmap_update_bits(regmap, ISC_PFE_CFG0, mask, pfe_cfg0);
 
-	regmap_update_bits(regmap, ISC_RLP_CFG, ISC_RLP_CFG_MODE_MASK,
-			   rlp_mode);
+	regmap_update_bits(regmap, ISC_RLP_CFG + isc->offsets.rlp,
+			   ISC_RLP_CFG_MODE_MASK, rlp_mode);
 
 	regmap_write(regmap, ISC_DCFG, dcfg);
 
diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
index 04839def6ef6..2205484e04fc 100644
--- a/drivers/media/platform/atmel/atmel-isc-regs.h
+++ b/drivers/media/platform/atmel/atmel-isc-regs.h
@@ -204,6 +204,8 @@
 /* Subsampling 4:2:2 to 4:2:0 Control Register */
 #define ISC_SUB420_CTRL 0x000003cc
 
+/* Offset for RLP register specific to sama5d2 product */
+#define ISC_SAMA5D2_RLP_OFFSET	0
 /* Rounding, Limiting and Packing Configuration Register */
 #define ISC_RLP_CFG     0x000003d0
 
diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
index fb7257872e7c..b7d4e7fab570 100644
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -150,12 +150,14 @@ struct isc_ctrls {
  * @cbc:		Offset for the CBC register
  * @sub422:		Offset for the SUB422 register
  * @sub420:		Offset for the SUB420 register
+ * @rlp:		Offset for the RLP register
  */
 struct isc_reg_offsets {
 	u32 csc;
 	u32 cbc;
 	u32 sub422;
 	u32 sub420;
+	u32 rlp;
 };
 
 /*
diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 943793fbc791..dd3f8e50a8d4 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -237,6 +237,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 	isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;
 	isc->offsets.sub422 = ISC_SAMA5D2_SUB422_OFFSET;
 	isc->offsets.sub420 = ISC_SAMA5D2_SUB420_OFFSET;
+	isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;
 
 	/* sama5d2-isc - 8 bits per beat */
 	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
-- 
2.25.1