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From:   Benoit Parrot <bparrot@ti.com>
To:     Hans Verkuil <hverkuil@xs4all.nl>
CC:     Prabhakar Lad <prabhakar.csengg@gmail.com>,
        <linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, Benoit Parrot <bparrot@ti.com>
Subject: [Patch 12/13] media: am437x-vpfe: Remove per bus width static data
Date:   Mon, 9 Sep 2019 11:27:42 -0500
Message-ID: <20190909162743.30114-13-bparrot@ti.com>
In-Reply-To: <20190909162743.30114-1-bparrot@ti.com>
References: <20190909162743.30114-1-bparrot@ti.com>
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Sender: linux-kernel-owner@vger.kernel.org
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The bus related static data include in the vpfe_fmt
static table can be derived dynamically instead.
This simplify the table and it's use.

We instead replace the per bus data info with just
the usual bit per pixel value for each supported
pixel format.

Signed-off-by: Benoit Parrot <bparrot@ti.com>
---
 drivers/media/platform/am437x/am437x-vpfe.c | 56 ++++++---------------
 drivers/media/platform/am437x/am437x-vpfe.h | 16 +-----
 2 files changed, 16 insertions(+), 56 deletions(-)

diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
index 9759ed398943..9855d4cb1d13 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -73,73 +73,43 @@ static struct vpfe_fmt formats[] = {
 	{
 		.fourcc		= V4L2_PIX_FMT_YUYV,
 		.code		= MEDIA_BUS_FMT_YUYV8_2X8,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_UYVY,
 		.code		= MEDIA_BUS_FMT_UYVY8_2X8,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_YVYU,
 		.code		= MEDIA_BUS_FMT_YVYU8_2X8,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_VYUY,
 		.code		= MEDIA_BUS_FMT_VYUY8_2X8,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_SBGGR8,
 		.code		= MEDIA_BUS_FMT_SBGGR8_1X8,
-		.l.width	= 10,
-		.l.bpp		= 2,
-		.s.width	= 8,
-		.s.bpp		= 1,
+		.bitsperpixel	= 8,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_SGBRG8,
 		.code		= MEDIA_BUS_FMT_SGBRG8_1X8,
-		.l.width	= 10,
-		.l.bpp		= 2,
-		.s.width	= 8,
-		.s.bpp		= 1,
+		.bitsperpixel	= 8,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_SGRBG8,
 		.code		= MEDIA_BUS_FMT_SGRBG8_1X8,
-		.l.width	= 10,
-		.l.bpp		= 2,
-		.s.width	= 8,
-		.s.bpp		= 1,
+		.bitsperpixel	= 8,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_SRGGB8,
 		.code		= MEDIA_BUS_FMT_SRGGB8_1X8,
-		.l.width	= 10,
-		.l.bpp		= 2,
-		.s.width	= 8,
-		.s.bpp		= 1,
+		.bitsperpixel	= 8,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_RGB565,
 		.code		= MEDIA_BUS_FMT_RGB565_2X8_LE,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	}, {
 		.fourcc		= V4L2_PIX_FMT_RGB565X,
 		.code		= MEDIA_BUS_FMT_RGB565_2X8_BE,
-		.l.width	= 10,
-		.l.bpp		= 4,
-		.s.width	= 8,
-		.s.bpp		= 2,
+		.bitsperpixel	= 16,
 	},
 };
 
@@ -184,9 +154,11 @@ static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe,
 {
 	struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
 	unsigned int bus_width = sdinfo->vpfe_param.bus_width;
-	u32 bpp;
+	u32 bpp, bus_width_bytes, clocksperpixel;
 
-	bpp = (bus_width == 10) ? fmt->l.bpp : fmt->s.bpp;
+	bus_width_bytes = ALIGN(bus_width, 8) >> 3;
+	clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width);
+	bpp = clocksperpixel * bus_width_bytes;
 
 	return bpp;
 }
diff --git a/drivers/media/platform/am437x/am437x-vpfe.h b/drivers/media/platform/am437x/am437x-vpfe.h
index 0d10d2b4d7a2..2c9e89395bea 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.h
+++ b/drivers/media/platform/am437x/am437x-vpfe.h
@@ -215,28 +215,16 @@ struct vpfe_ccdc {
 	u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
 };
 
-/*
- * struct bus_format - VPFE bus format information
- * @width: Bits per pixel (when transferred over a bus)
- * @bpp: Bytes per pixel (when stored in memory)
- */
-struct bus_format {
-	unsigned int width;
-	unsigned int bpp;
-};
-
 /*
  * struct vpfe_fmt - VPFE media bus format information
  * @fourcc: V4L2 pixel format code
  * @code: V4L2 media bus format code
- * @l: 10 bit bus format info
- * @s: 8 bit bus format info
+ * @bitsperpixel: Bits per pixel over the bus
  */
 struct vpfe_fmt {
 	u32 fourcc;
 	u32 code;
-	struct bus_format l;
-	struct bus_format s;
+	u32 bitsperpixel;
 };
 
 /*
-- 
2.17.1