diff mbox series

[v3,059/105] drm/vc4: crtc: Add BCM2711 pixelvalves

Message ID eb489952ba212a84dbe3d369371c0ee75b9a2d3e.1590594512.git-series.maxime@cerno.tech (mailing list archive)
State New, archived
Headers show
Series drm/vc4: Support BCM2711 Display Pipeline | expand

Commit Message

Maxime Ripard May 27, 2020, 3:48 p.m. UTC
The BCM2711 has 5 pixelvalves, so now that our driver is ready, let's add
support for them.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_crtc.c | 84 ++++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/vc4/vc4_regs.h |  6 +++-
 2 files changed, 88 insertions(+), 2 deletions(-)

Comments

Eric Anholt May 27, 2020, 7:24 p.m. UTC | #1
On Wed, May 27, 2020 at 8:50 AM Maxime Ripard <maxime@cerno.tech> wrote:
>
> The BCM2711 has 5 pixelvalves, so now that our driver is ready, let's add
> support for them.
>
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> ---
>  drivers/gpu/drm/vc4/vc4_crtc.c | 84 ++++++++++++++++++++++++++++++++++-
>  drivers/gpu/drm/vc4/vc4_regs.h |  6 +++-
>  2 files changed, 88 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
> index 9efd7cb25590..a577ed8f929f 100644
> --- a/drivers/gpu/drm/vc4/vc4_crtc.c
> +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
> @@ -229,6 +229,13 @@ static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format)
>         case PV_CONTROL_FORMAT_24:
>         case PV_CONTROL_FORMAT_DSIV_24:
>         default:
> +               /*
> +                * For some reason, the pixelvalve4 doesn't work with
> +                * the usual formula and will only work with 32.
> +                */
> +               if (vc4_crtc->data->hvs_output == 5)
> +                       return 32;
> +
>                 return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
>         }
>  }
> @@ -237,9 +244,14 @@ static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc,
>                                              u32 format)
>  {
>         u32 level = vc4_get_fifo_full_level(vc4_crtc, format);
> +       u32 ret = 0;
>
> -       return VC4_SET_FIELD(level & 0x3f,
> -                            PV_CONTROL_FIFO_LEVEL);
> +       if (level > 0x3f)
> +               ret |= VC4_SET_FIELD((level >> 6) & 0x3,
> +                                    PV5_CONTROL_FIFO_LEVEL_HIGH);
> +

I would drop the conditional here (ORing in zero is fine), and also
the & 3 because it would be good to get a warning if you picked a fifo
full level that doesn't fit in the field.

> +       return ret | VC4_SET_FIELD(level & 0x3f,
> +                                  PV_CONTROL_FIFO_LEVEL);
>  }
>
>  /*
> @@ -277,6 +289,8 @@ static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc)
>
>  static void vc4_crtc_config_pv(struct drm_crtc *crtc)
>  {
> +       struct drm_device *dev = crtc->dev;
> +       struct vc4_dev *vc4 = to_vc4_dev(dev);
>         struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc);
>         struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
>         struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> @@ -356,6 +370,10 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc)
>         if (is_dsi)
>                 CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
>
> +       if (vc4->hvs->hvs5)
> +               CRTC_WRITE(PV_MUX_CFG,
> +                          VC4_SET_FIELD(8, PV_MUX_CFG_RGB_PIXEL_MUX_MODE));

Can we get some #defines in the reg header instead of a magic value?

Other than that, r-b.
diff mbox series

Patch

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 9efd7cb25590..a577ed8f929f 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -229,6 +229,13 @@  static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format)
 	case PV_CONTROL_FORMAT_24:
 	case PV_CONTROL_FORMAT_DSIV_24:
 	default:
+		/*
+		 * For some reason, the pixelvalve4 doesn't work with
+		 * the usual formula and will only work with 32.
+		 */
+		if (vc4_crtc->data->hvs_output == 5)
+			return 32;
+
 		return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
 	}
 }
@@ -237,9 +244,14 @@  static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc,
 					     u32 format)
 {
 	u32 level = vc4_get_fifo_full_level(vc4_crtc, format);
+	u32 ret = 0;
 
-	return VC4_SET_FIELD(level & 0x3f,
-			     PV_CONTROL_FIFO_LEVEL);
+	if (level > 0x3f)
+		ret |= VC4_SET_FIELD((level >> 6) & 0x3,
+				     PV5_CONTROL_FIFO_LEVEL_HIGH);
+
+	return ret | VC4_SET_FIELD(level & 0x3f,
+				   PV_CONTROL_FIFO_LEVEL);
 }
 
 /*
@@ -277,6 +289,8 @@  static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc)
 
 static void vc4_crtc_config_pv(struct drm_crtc *crtc)
 {
+	struct drm_device *dev = crtc->dev;
+	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc);
 	struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
@@ -356,6 +370,10 @@  static void vc4_crtc_config_pv(struct drm_crtc *crtc)
 	if (is_dsi)
 		CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
 
+	if (vc4->hvs->hvs5)
+		CRTC_WRITE(PV_MUX_CFG,
+			   VC4_SET_FIELD(8, PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
+
 	CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR |
 		   vc4_crtc_get_fifo_full_level_bits(vc4_crtc, format) |
 		   VC4_SET_FIELD(format, PV_CONTROL_FORMAT) |
@@ -904,10 +922,72 @@  static const struct vc4_crtc_data bcm2835_pv2_data = {
 	},
 };
 
+static const struct vc4_crtc_data bcm2711_pv0_data = {
+	.debugfs_name = "crtc0_regs",
+	.hvs_available_channels = BIT(0),
+	.hvs_output = 0,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_DSI0,
+		[1] = VC4_ENCODER_TYPE_DPI,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv1_data = {
+	.debugfs_name = "crtc1_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 3,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_DSI1,
+		[1] = VC4_ENCODER_TYPE_SMI,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv2_data = {
+	.debugfs_name = "crtc2_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 4,
+	.fifo_depth = 256,
+	.pixels_per_clock = 2,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_HDMI0,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv3_data = {
+	.debugfs_name = "crtc3_regs",
+	.hvs_available_channels = BIT(1),
+	.hvs_output = 1,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_VEC,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv4_data = {
+	.debugfs_name = "crtc4_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 5,
+	.fifo_depth = 64,
+	.pixels_per_clock = 2,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_HDMI1,
+	},
+};
+
 static const struct of_device_id vc4_crtc_dt_match[] = {
 	{ .compatible = "brcm,bcm2835-pixelvalve0", .data = &bcm2835_pv0_data },
 	{ .compatible = "brcm,bcm2835-pixelvalve1", .data = &bcm2835_pv1_data },
 	{ .compatible = "brcm,bcm2835-pixelvalve2", .data = &bcm2835_pv2_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve0", .data = &bcm2711_pv0_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve1", .data = &bcm2711_pv1_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve2", .data = &bcm2711_pv2_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve3", .data = &bcm2711_pv3_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve4", .data = &bcm2711_pv4_data },
 	{}
 };
 
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index b96ebbb1354b..35279b118d41 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -130,6 +130,8 @@ 
 #define V3D_ERRSTAT  0x00f20
 
 #define PV_CONTROL				0x00
+# define PV5_CONTROL_FIFO_LEVEL_HIGH_MASK	VC4_MASK(26, 25)
+# define PV5_CONTROL_FIFO_LEVEL_HIGH_SHIFT	25
 # define PV_CONTROL_FORMAT_MASK			VC4_MASK(23, 21)
 # define PV_CONTROL_FORMAT_SHIFT		21
 # define PV_CONTROL_FORMAT_24			0
@@ -209,6 +211,10 @@ 
 
 #define PV_HACT_ACT				0x30
 
+#define PV_MUX_CFG				0x34
+# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_MASK	VC4_MASK(5, 2)
+# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_SHIFT	2
+
 #define SCALER_CHANNELS_COUNT			3
 
 #define SCALER_DISPCTRL                         0x00000000