media: hantro: add support for Rockchip RK3066

RK3066's VPU IP block is the predecessor from what RK3288 has.
The hardware differences are:
  - supports decoding frame sizes up to 1920x1088 only
  - doesn't have the 'G1_REG_SOFT_RESET' register
    (requires another .reset callback for hantro_codec_ops,
     since writing this register will result in non-working
     IP block)
  - has one ACLK/HCLK per vdpu/vepu
  - ACLKs can be clocked up to 300 MHz only
  - no MMU
    (no changes required: CMA will be transparently used)

Add a new RK3066 variant which reflect this differences. This variant
can be used for RK3188 as well.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/hantro/hantro_drv.c

@@ -582,6 +582,7 @@ static const struct v4l2_file_operations hantro_fops = {
 
 static const struct of_device_id of_hantro_match[] = {
 #ifdef CONFIG_VIDEO_HANTRO_ROCKCHIP
+	{ .compatible = "rockchip,rk3066-vpu", .data = &rk3066_vpu_variant, },
 	{ .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, },
 	{ .compatible = "rockchip,rk3328-vpu", .data = &rk3328_vpu_variant, },
 	{ .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, },

drivers/staging/media/hantro/hantro_hw.h

@@ -205,6 +205,7 @@ enum hantro_enc_fmt {
 
 extern const struct hantro_variant imx8mq_vpu_g2_variant;
 extern const struct hantro_variant imx8mq_vpu_variant;
+extern const struct hantro_variant rk3066_vpu_variant;
 extern const struct hantro_variant rk3288_vpu_variant;
 extern const struct hantro_variant rk3328_vpu_variant;
 extern const struct hantro_variant rk3399_vpu_variant;

drivers/staging/media/hantro/rockchip_vpu_hw.c

@@ -10,9 +10,11 @@
 
 #include "hantro.h"
 #include "hantro_jpeg.h"
+#include "hantro_g1_regs.h"
 #include "hantro_h1_regs.h"
 #include "rockchip_vpu2_regs.h"
 
+#define RK3066_ACLK_MAX_FREQ (300 * 1000 * 1000)
 #define RK3288_ACLK_MAX_FREQ (400 * 1000 * 1000)
 
 /*
@@ -63,6 +65,52 @@ static const struct hantro_fmt rockchip_vpu1_postproc_fmts[] = {
 	},
 };
 
+static const struct hantro_fmt rk3066_vpu_dec_fmts[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_NV12,
+		.codec_mode = HANTRO_MODE_NONE,
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_H264_SLICE,
+		.codec_mode = HANTRO_MODE_H264_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = 48,
+			.max_width = 1920,
+			.step_width = MB_DIM,
+			.min_height = 48,
+			.max_height = 1088,
+			.step_height = MB_DIM,
+		},
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_MPEG2_SLICE,
+		.codec_mode = HANTRO_MODE_MPEG2_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = 48,
+			.max_width = 1920,
+			.step_width = MB_DIM,
+			.min_height = 48,
+			.max_height = 1088,
+			.step_height = MB_DIM,
+		},
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_VP8_FRAME,
+		.codec_mode = HANTRO_MODE_VP8_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = 48,
+			.max_width = 1920,
+			.step_width = MB_DIM,
+			.min_height = 48,
+			.max_height = 1088,
+			.step_height = MB_DIM,
+		},
+	},
+};
+
 static const struct hantro_fmt rk3288_vpu_dec_fmts[] = {
 	{
 		.fourcc = V4L2_PIX_FMT_NV12,
@@ -196,6 +244,14 @@ static irqreturn_t rockchip_vpu2_vepu_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static int rk3066_vpu_hw_init(struct hantro_dev *vpu)
+{
+	/* Bump ACLKs to max. possible freq. to improve performance. */
+	clk_set_rate(vpu->clocks[0].clk, RK3066_ACLK_MAX_FREQ);
+	clk_set_rate(vpu->clocks[2].clk, RK3066_ACLK_MAX_FREQ);
+	return 0;
+}
+
 static int rockchip_vpu_hw_init(struct hantro_dev *vpu)
 {
 	/* Bump ACLK to max. possible freq. to improve performance. */
@@ -203,6 +259,14 @@ static int rockchip_vpu_hw_init(struct hantro_dev *vpu)
 	return 0;
 }
 
+static void rk3066_vpu_dec_reset(struct hantro_ctx *ctx)
+{
+	struct hantro_dev *vpu = ctx->dev;
+
+	vdpu_write(vpu, G1_REG_INTERRUPT_DEC_IRQ_DIS, G1_REG_INTERRUPT);
+	vdpu_write(vpu, G1_REG_CONFIG_DEC_CLK_GATE_E, G1_REG_CONFIG);
+}
+
 static void rockchip_vpu1_enc_reset(struct hantro_ctx *ctx)
 {
 	struct hantro_dev *vpu = ctx->dev;
@@ -233,6 +297,33 @@ static void rockchip_vpu2_enc_reset(struct hantro_ctx *ctx)
 /*
  * Supported codec ops.
  */
+static const struct hantro_codec_ops rk3066_vpu_codec_ops[] = {
+	[HANTRO_MODE_JPEG_ENC] = {
+		.run = hantro_h1_jpeg_enc_run,
+		.reset = rockchip_vpu1_enc_reset,
+		.init = hantro_jpeg_enc_init,
+		.done = hantro_jpeg_enc_done,
+		.exit = hantro_jpeg_enc_exit,
+	},
+	[HANTRO_MODE_H264_DEC] = {
+		.run = hantro_g1_h264_dec_run,
+		.reset = rk3066_vpu_dec_reset,
+		.init = hantro_h264_dec_init,
+		.exit = hantro_h264_dec_exit,
+	},
+	[HANTRO_MODE_MPEG2_DEC] = {
+		.run = hantro_g1_mpeg2_dec_run,
+		.reset = rk3066_vpu_dec_reset,
+		.init = hantro_mpeg2_dec_init,
+		.exit = hantro_mpeg2_dec_exit,
+	},
+	[HANTRO_MODE_VP8_DEC] = {
+		.run = hantro_g1_vp8_dec_run,
+		.reset = rk3066_vpu_dec_reset,
+		.init = hantro_vp8_dec_init,
+		.exit = hantro_vp8_dec_exit,
+	},
+};
 
 static const struct hantro_codec_ops rk3288_vpu_codec_ops[] = {
 	[HANTRO_MODE_JPEG_ENC] = {
@@ -301,10 +392,40 @@ static const struct hantro_irq rockchip_vpu2_irqs[] = {
 	{ "vdpu", rockchip_vpu2_vdpu_irq },
 };
 
+static const char * const rk3066_vpu_clk_names[] = {
+	"aclk_vdpu", "hclk_vdpu",
+	"aclk_vepu", "hclk_vepu"
+};
+
 static const char * const rockchip_vpu_clk_names[] = {
 	"aclk", "hclk"
 };
 
+/*
+ * Despite this variant has separate clocks for decoder and encoder,
+ * it's still required to enable all four of them for either decoding
+ * or encoding and we can't split it in separate g1/h1 variants.
+ */
+const struct hantro_variant rk3066_vpu_variant = {
+	.enc_offset = 0x0,
+	.enc_fmts = rockchip_vpu_enc_fmts,
+	.num_enc_fmts = ARRAY_SIZE(rockchip_vpu_enc_fmts),
+	.dec_offset = 0x400,
+	.dec_fmts = rk3066_vpu_dec_fmts,
+	.num_dec_fmts = ARRAY_SIZE(rk3066_vpu_dec_fmts),
+	.postproc_fmts = rockchip_vpu1_postproc_fmts,
+	.num_postproc_fmts = ARRAY_SIZE(rockchip_vpu1_postproc_fmts),
+	.postproc_regs = &hantro_g1_postproc_regs,
+	.codec = HANTRO_JPEG_ENCODER | HANTRO_MPEG2_DECODER |
+		 HANTRO_VP8_DECODER | HANTRO_H264_DECODER,
+	.codec_ops = rk3066_vpu_codec_ops,
+	.irqs = rockchip_vpu1_irqs,
+	.num_irqs = ARRAY_SIZE(rockchip_vpu1_irqs),
+	.init = rk3066_vpu_hw_init,
+	.clk_names = rk3066_vpu_clk_names,
+	.num_clocks = ARRAY_SIZE(rk3066_vpu_clk_names)
+};
+
 const struct hantro_variant rk3288_vpu_variant = {
 	.enc_offset = 0x0,
 	.enc_fmts = rockchip_vpu_enc_fmts,