Add support for the image renderer light SRAM extended 3 (IMR-LSX3) found
only in the R-Car V2H (R8A7792) SoC. It differs from IMR-LX4 in that it
supports only planar video formats but can use the video capture data for
the textures.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
This patch is against the 'media_tree.git' repo's 'master' branch plus the
latest version of the Renesas IMR driver...
Changes in version 2:
- renamed *enum* 'imr_gen' to 'imr_type' and the *struct* field of this type
from 'gen' to 'type';
- rename *struct* 'imr_type' to 'imr_info' and the fields/variables of this type
from 'type' to 'info';
- added comments to IMR-LX4 only CMRCR2 bits;
- added IMR type check to the WTS instruction writing to CMRCCR2.
Documentation/devicetree/bindings/media/rcar_imr.txt | 11 +
drivers/media/platform/rcar_imr.c | 106 +++++++++++++++----
2 files changed, 97 insertions(+), 20 deletions(-)
Index: media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt
===================================================================
--- media_tree.orig/Documentation/devicetree/bindings/media/rcar_imr.txt
+++ media_tree/Documentation/devicetree/bindings/media/rcar_imr.txt
@@ -8,9 +8,14 @@ and drawing with respect to any shape th
Required properties:
-- compatible: "renesas,<soctype>-imr-lx4", "renesas,imr-lx4" as a fallback for
- the image renderer light extended 4 (IMR-LX4) found in the R-Car gen3 SoCs,
- where the examples with <soctype> are:
+- compatible:
+ "renesas,<soctype>-imr-lsx3", "renesas,imr-lsx3" as a fallback for the image
+ renderer light SRAM extended 3 (IMR-LSX3) found in the R-Car gen2 SoCs, where
+ the examples with <soctype> are:
+ - "renesas,r8a7792-imr-lsx3" for R-Car V2H;
+ "renesas,<soctype>-imr-lx4", "renesas,imr-lx4" as a fallback for the image
+ renderer light extended 4 (IMR-LX4) found in the R-Car gen3 SoCs, where the
+ examples with <soctype> are:
- "renesas,r8a7795-imr-lx4" for R-Car H3,
- "renesas,r8a7796-imr-lx4" for R-Car M3-W.
- reg: offset and length of the register block;
Index: media_tree/drivers/media/platform/rcar_imr.c
===================================================================
--- media_tree.orig/drivers/media/platform/rcar_imr.c
+++ media_tree/drivers/media/platform/rcar_imr.c
@@ -1,5 +1,5 @@
/*
- * rcar_imr.c -- R-Car IMR-LX4 Driver
+ * rcar_imr.c -- R-Car IMR-LSX3/LX4 Driver
*
* Copyright (C) 2015-2017 Cogent Embedded, Inc. <source@xxxxxxxxxxxxxxxxxx>
*
@@ -14,7 +14,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/platform_device.h>
+#include <linux/of_device.h>
#include <linux/rcar_imr.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
@@ -81,8 +81,21 @@ struct imr_format_info {
u32 flags;
};
+enum imr_type {
+ IMR_LSX3,
+ IMR_LX4,
+};
+
+/* IMR type specific data */
+struct imr_info {
+ enum imr_type type;
+ const struct imr_format_info *formats;
+ unsigned int num_formats;
+};
+
/* per-device data */
struct imr_device {
+ const struct imr_info *info;
struct device *dev;
struct clk *clock;
void __iomem *mmio;
@@ -180,6 +193,7 @@ struct imr_ctx {
#define IMR_IMR_IEM BIT(1)
#define IMR_IMR_INM BIT(2)
+#define IMR_CMRCR_TXTM BIT(0) /* IMR-LSX3 only */
#define IMR_CMRCR_LUCE BIT(1)
#define IMR_CMRCR_CLCE BIT(2)
#define IMR_CMRCR_DUV_SHIFT 3
@@ -219,11 +233,11 @@ struct imr_ctx {
#define IMR_CPDPOR_YLDPO GENMASK(10, 8)
#define IMR_CMRCR2_LUTE BIT(0)
-#define IMR_CMRCR2_YUV422E BIT(2)
-#define IMR_CMRCR2_YUV422FORM BIT(5)
-#define IMR_CMRCR2_UVFORM BIT(6)
-#define IMR_CMRCR2_TCTE BIT(12)
-#define IMR_CMRCR2_DCTE BIT(15)
+#define IMR_CMRCR2_YUV422E BIT(2) /* IMR-LX4 only */
+#define IMR_CMRCR2_YUV422FORM BIT(5) /* IMR-LX4 only */
+#define IMR_CMRCR2_UVFORM BIT(6) /* IMR-LX4 only */
+#define IMR_CMRCR2_TCTE BIT(12) /* IMR-LX4 only */
+#define IMR_CMRCR2_DCTE BIT(15) /* IMR-LX4 only */
/*******************************************************************************
* Display list commands
@@ -282,6 +296,34 @@ static u32 __imr_flags_common(u32 iflags
return iflags & oflags & IMR_F_PLANES_MASK;
}
+static const struct imr_format_info imr_lsx3_formats[] = {
+ {
+ .name = "YUV 4:2:2 semiplanar (NV16)",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .flags = IMR_F_Y8 | IMR_F_UV8 | IMR_F_PLANAR,
+ },
+ {
+ .name = "Greyscale 8-bit",
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .flags = IMR_F_Y8 | IMR_F_PLANAR,
+ },
+ {
+ .name = "Greyscale 10-bit",
+ .fourcc = V4L2_PIX_FMT_Y10,
+ .flags = IMR_F_Y8 | IMR_F_Y10 | IMR_F_PLANAR,
+ },
+ {
+ .name = "Greyscale 12-bit",
+ .fourcc = V4L2_PIX_FMT_Y12,
+ .flags = IMR_F_Y8 | IMR_F_Y10 | IMR_F_Y12 | IMR_F_PLANAR,
+ },
+ {
+ .name = "Chrominance UV 8-bit",
+ .fourcc = V4L2_PIX_FMT_UV8,
+ .flags = IMR_F_UV8 | IMR_F_PLANAR,
+ },
+};
+
static const struct imr_format_info imr_lx4_formats[] = {
{
.name = "YUV 4:2:2 semiplanar (NV16)",
@@ -335,6 +377,18 @@ static const struct imr_format_info imr_
},
};
+static const struct imr_info imr_lsx3 = {
+ .type = IMR_LSX3,
+ .formats = imr_lsx3_formats,
+ .num_formats = ARRAY_SIZE(imr_lsx3_formats),
+};
+
+static const struct imr_info imr_lx4 = {
+ .type = IMR_LX4,
+ .formats = imr_lx4_formats,
+ .num_formats = ARRAY_SIZE(imr_lx4_formats),
+};
+
/* mesh configuration constructor */
static struct imr_cfg *imr_cfg_create(struct imr_ctx *ctx,
u32 dl_size, u32 dl_start)
@@ -767,7 +821,8 @@ static void imr_dl_program_setup(struct
"setup %ux%u -> %ux%u mapping (type=%x)\n", w, h, W, H, type);
/* set triangle mode register from user-supplied descriptor */
- *dl++ = IMR_OP_WTS(IMR_TRIMCR, 0x004F);
+ *dl++ = IMR_OP_WTS(IMR_TRIMCR,
+ ctx->imr->info->type == IMR_LX4 ? 0x004F : 0x007F);
/* set automatic source/destination coordinates generation flags */
*dl++ = IMR_OP_WTS(IMR_TRIMSR, __imr_auto_sg_dg_tcm(type) |
@@ -781,7 +836,8 @@ static void imr_dl_program_setup(struct
/* reset rendering mode registers */
*dl++ = IMR_OP_WTS(IMR_CMRCCR, 0xDBFE);
- *dl++ = IMR_OP_WTS(IMR_CMRCCR2, 0x9065);
+ *dl++ = IMR_OP_WTS(IMR_CMRCCR2, ctx->imr->info->type == IMR_LX4 ?
+ 0x9065 : IMR_CMRCR2_LUTE);
/* set source/destination addresses of Y/UV plane */
*dl++ = IMR_OP_WTL(IMR_DSAR, 2);
@@ -823,7 +879,7 @@ static void imr_dl_program_setup(struct
*dl++ = IMR_OP_WTS(IMR_SSTR,
w << (iflags & IMR_F_UV10 ? 1 : 0));
}
- } else {
+ } else if (ctx->imr->info->type == IMR_LX4) {
u16 src_fmt = (iflags & IMR_F_UV_SWAP ? IMR_CMRCR2_UVFORM : 0) |
(iflags & IMR_F_YUV_SWAP ?
IMR_CMRCR2_YUV422FORM : 0);
@@ -864,6 +920,9 @@ static void imr_dl_program_setup(struct
*dl++ = IMR_OP_WTS(IMR_DSTR,
W << (cflags & IMR_F_Y10 ? 2 : 1));
}
+ } else {
+ /* this shouldn't happen! */
+ BUG();
}
/*
@@ -1114,6 +1173,7 @@ out:
/* test if a format is supported */
static int __imr_try_fmt(struct imr_ctx *ctx, struct v4l2_format *f)
{
+ const struct imr_info *info = ctx->imr->info;
struct v4l2_pix_format *pix = &f->fmt.pix;
u32 fourcc = pix->pixelformat;
int i;
@@ -1122,8 +1182,8 @@ static int __imr_try_fmt(struct imr_ctx
* both output and capture interface have the same set of
* supported formats
*/
- for (i = 0; i < ARRAY_SIZE(imr_lx4_formats); i++) {
- if (fourcc == imr_lx4_formats[i].fourcc) {
+ for (i = 0; i < info->num_formats; i++) {
+ if (fourcc == info->formats[i].fourcc) {
/* fix up format specification as needed */
pix->field = V4L2_FIELD_NONE;
@@ -1174,9 +1234,12 @@ static int imr_querycap(struct file *fil
/* enumerate supported formats */
static int imr_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f)
{
+ struct imr_ctx *ctx = fh_to_ctx(priv);
+ const struct imr_info *info = ctx->imr->info;
+
/* no distinction between output/capture formats */
- if (f->index < ARRAY_SIZE(imr_lx4_formats)) {
- const struct imr_format_info *fmt = &imr_lx4_formats[f->index];
+ if (f->index < info->num_formats) {
+ const struct imr_format_info *fmt = &info->formats[f->index];
strlcpy(f->description, fmt->name, sizeof(f->description));
f->pixelformat = fmt->fourcc;
@@ -1246,7 +1309,7 @@ static int imr_s_fmt(struct file *file,
/* processing is locked? TBD */
q_data->fmt = f->fmt.pix;
- q_data->flags = imr_lx4_formats[i].flags;
+ q_data->flags = ctx->imr->info->formats[i].flags;
/* set default crop factors */
if (!V4L2_TYPE_IS_OUTPUT(f->type)) {
@@ -1622,6 +1685,8 @@ static void imr_device_run(void *priv)
wmb();
/* start rendering operation */
+ if (imr->info->type != IMR_LX4)
+ iowrite32(IMR_CMRCR_TXTM, imr->mmio + IMR_CMRCSR);
iowrite32(IMR_CR_RS, imr->mmio + IMR_CR);
/* timestamp input buffer */
@@ -1776,16 +1841,22 @@ handled:
static int imr_probe(struct platform_device *pdev)
{
+ const struct imr_info *info;
struct imr_device *imr;
struct resource *res;
int ret;
+ info = of_device_get_match_data(&pdev->dev);
+ if (!info)
+ return -ENODEV;
+
imr = devm_kzalloc(&pdev->dev, sizeof(*imr), GFP_KERNEL);
if (!imr)
return -ENOMEM;
mutex_init(&imr->mutex);
spin_lock_init(&imr->lock);
+ imr->info = info;
imr->dev = &pdev->dev;
/* memory-mapped registers */
@@ -1919,7 +1990,8 @@ static const struct dev_pm_ops imr_pm_op
/* device table */
static const struct of_device_id imr_of_match[] = {
- { .compatible = "renesas,imr-lx4" },
+ { .compatible = "renesas,imr-lsx3", .data = &imr_lsx3, },
+ { .compatible = "renesas,imr-lx4", .data = &imr_lx4, },
{ },
};
@@ -1939,5 +2011,5 @@ module_platform_driver(imr_platform_driv
MODULE_ALIAS("imr");
MODULE_AUTHOR("Cogent Embedded Inc. <sources@xxxxxxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("Renesas IMR-LX4 Driver");
+MODULE_DESCRIPTION("Renesas IMR-LSX3/LX4 Driver");
MODULE_LICENSE("GPL");
