* [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display
@ 2022-01-20 8:33 Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 1/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings Neil Armstrong
` (5 more replies)
0 siblings, 6 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong
The Amlogic G12A, G12B & SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
glue on the same Amlogic SoCs.
This adds support for the glue managing the transceiver, mimicing the init flow provided
by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
Analog PHY in the proper way.
The DW-MIPI-DSI transceiver + D-PHY are clocked by the GP0 PLL, and the ENCL encoder + VIU
pixel reader by the VCLK2 clock using the HDMI PLL.
The DW-MIPI-DSI transceiver gets this pixel stream as input clocked with the VCLK2 clock.
An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
DW-MIPI-DSI transceiver.
This patchset is based on an earlier attempt at [1] for the AXG SoCs, but:
- the AXG has a single clock source for both transceiver + pixel, which makes it an
exception instead of a rule, it's simpler to add support for G12A then add AXG on it
- previous glue code was a single monolitic code mixing encoders & bridges, this version
is aligned on the previous cleanup done on HDMI & CVBS bridges architecture at [2]
- since the only output of AXG is DSI, AXG VPU support is post-poned until we implement
single-clock DSI support specific case on top of this.
Changes from v1 at [3]:
- fixed DSI host bindings
- add reviewed-by tags for bindings
- moved magic values to defines thanks to Martin's searches
- added proper prefixes to defines
- moved phy_configure to phy_init() dw-mipi-dsi callback
- moved phy_on to a new phy_power_on() dw-mipi-dsi callback
- correctly return phy_init/configure errors to callback returns
[1] https://lore.kernel.org/r/20200907081825.1654-1-narmstrong@baylibre.com
[2] https://lore.kernel.org/r/20211020123947.2585572-1-narmstrong@baylibre.com
Neil Armstrong (6):
dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings
dt-bindings: display: meson-vpu: add third DPI output port
drm/meson: venc: add ENCL encoder setup for MIPI-DSI output
drm/meson: vclk: add DSI clock config
drm/meson: add DSI encoder
drm/meson: add support for MIPI-DSI transceiver
.../display/amlogic,meson-dw-mipi-dsi.yaml | 116 ++++++
.../bindings/display/amlogic,meson-vpu.yaml | 5 +
drivers/gpu/drm/meson/Kconfig | 7 +
drivers/gpu/drm/meson/Makefile | 3 +-
drivers/gpu/drm/meson/meson_drv.c | 7 +
drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 357 ++++++++++++++++++
drivers/gpu/drm/meson/meson_dw_mipi_dsi.h | 160 ++++++++
drivers/gpu/drm/meson/meson_encoder_dsi.c | 160 ++++++++
drivers/gpu/drm/meson/meson_encoder_dsi.h | 12 +
drivers/gpu/drm/meson/meson_registers.h | 15 +
drivers/gpu/drm/meson/meson_vclk.c | 47 +++
drivers/gpu/drm/meson/meson_vclk.h | 1 +
drivers/gpu/drm/meson/meson_venc.c | 211 ++++++++++-
drivers/gpu/drm/meson/meson_venc.h | 6 +
drivers/gpu/drm/meson/meson_vpp.h | 2 +
15 files changed, 1106 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.c
create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.h
--
2.25.1
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 1/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 2/6] dt-bindings: display: meson-vpu: add third DPI output port Neil Armstrong
` (4 subsequent siblings)
5 siblings, 0 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl, devicetree
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong,
Rob Herring
The Amlogic G12A, G12B & SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI Glue
on the same Amlogic SoCs.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../display/amlogic,meson-dw-mipi-dsi.yaml | 116 ++++++++++++++++++
1 file changed, 116 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml b/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
new file mode 100644
index 000000000000..e057659545a9
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
@@ -0,0 +1,116 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 BayLibre, SAS
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/amlogic,meson-dw-mipi-dsi.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic specific extensions to the Synopsys Designware MIPI DSI Host Controller
+
+maintainers:
+ - Neil Armstrong <narmstrong@baylibre.com>
+
+description: |
+ The Amlogic Meson Synopsys Designware Integration is composed of
+ - A Synopsys DesignWare MIPI DSI Host Controller IP
+ - A TOP control block controlling the Clocks & Resets of the IP
+
+allOf:
+ - $ref: dsi-controller.yaml#
+
+properties:
+ compatible:
+ enum:
+ - amlogic,meson-g12a-dw-mipi-dsi
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 2
+
+ clock-names:
+ minItems: 2
+ items:
+ - const: pclk
+ - const: px_clk
+ - const: meas_clk
+
+ resets:
+ minItems: 1
+
+ reset-names:
+ items:
+ - const: top
+
+ phys:
+ minItems: 1
+
+ phy-names:
+ items:
+ - const: dphy
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Input node to receive pixel data.
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: DSI output node to panel.
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+ - phys
+ - phy-names
+ - ports
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ dsi@7000 {
+ compatible = "amlogic,meson-g12a-dw-mipi-dsi";
+ reg = <0x6000 0x400>;
+ resets = <&reset_top>;
+ reset-names = "top";
+ clocks = <&clk_pclk>, <&clk_px>;
+ clock-names = "pclk", "px_clk";
+ phys = <&mipi_dphy>;
+ phy-names = "dphy";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* VPU VENC Input */
+ mipi_dsi_venc_port: port@0 {
+ reg = <0>;
+
+ mipi_dsi_in: endpoint {
+ remote-endpoint = <&dpi_out>;
+ };
+ };
+
+ /* DSI Output */
+ mipi_dsi_panel_port: port@1 {
+ reg = <1>;
+
+ mipi_out_panel: endpoint {
+ remote-endpoint = <&mipi_in_panel>;
+ };
+ };
+ };
+ };
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 2/6] dt-bindings: display: meson-vpu: add third DPI output port
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 1/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output Neil Armstrong
` (3 subsequent siblings)
5 siblings, 0 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong,
Rob Herring
Add third port corresponding to the ENCL DPI encoder used to connect
to DSI or LVDS transceivers.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/display/amlogic,meson-vpu.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml b/Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml
index 851cb0781217..525a01a38568 100644
--- a/Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml
+++ b/Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml
@@ -92,6 +92,11 @@ properties:
description:
A port node pointing to the HDMI-TX port node.
+ port@2:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ A port node pointing to the DPI port node (e.g. DSI or LVDS transceiver).
+
"#address-cells":
const: 1
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 1/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 2/6] dt-bindings: display: meson-vpu: add third DPI output port Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 16:26 ` Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 4/6] drm/meson: vclk: add DSI clock config Neil Armstrong
` (2 subsequent siblings)
5 siblings, 1 reply; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong
This adds supports for the ENCL encoder connected to a MIPI-DSI transceiver on the
Amlogic AXG, G12A, G12B & SM1 SoCs.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/meson/meson_registers.h | 15 ++
drivers/gpu/drm/meson/meson_venc.c | 211 +++++++++++++++++++++++-
drivers/gpu/drm/meson/meson_venc.h | 6 +
drivers/gpu/drm/meson/meson_vpp.h | 2 +
4 files changed, 232 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h
index 0f3cafab8860..a422a8df1641 100644
--- a/drivers/gpu/drm/meson/meson_registers.h
+++ b/drivers/gpu/drm/meson/meson_registers.h
@@ -1300,13 +1300,28 @@
#define RDMA_STATUS2 0x1116
#define RDMA_STATUS3 0x1117
#define L_GAMMA_CNTL_PORT 0x1400
+#define L_GAMMA_CNTL_PORT_VCOM_POL BIT(7) /* RW */
+#define L_GAMMA_CNTL_PORT_RVS_OUT BIT(6) /* RW */
+#define L_GAMMA_CNTL_PORT_ADR_RDY BIT(5) /* Read Only */
+#define L_GAMMA_CNTL_PORT_WR_RDY BIT(4) /* Read Only */
+#define L_GAMMA_CNTL_PORT_RD_RDY BIT(3) /* Read Only */
+#define L_GAMMA_CNTL_PORT_TR BIT(2) /* RW */
+#define L_GAMMA_CNTL_PORT_SET BIT(1) /* RW */
+#define L_GAMMA_CNTL_PORT_EN BIT(0) /* RW */
#define L_GAMMA_DATA_PORT 0x1401
#define L_GAMMA_ADDR_PORT 0x1402
+#define L_GAMMA_ADDR_PORT_RD BIT(12)
+#define L_GAMMA_ADDR_PORT_AUTO_INC BIT(11)
+#define L_GAMMA_ADDR_PORT_SEL_R BIT(10)
+#define L_GAMMA_ADDR_PORT_SEL_G BIT(9)
+#define L_GAMMA_ADDR_PORT_SEL_B BIT(8)
+#define L_GAMMA_ADDR_PORT_ADDR GENMASK(7, 0)
#define L_GAMMA_VCOM_HSWITCH_ADDR 0x1403
#define L_RGB_BASE_ADDR 0x1405
#define L_RGB_COEFF_ADDR 0x1406
#define L_POL_CNTL_ADDR 0x1407
#define L_DITH_CNTL_ADDR 0x1408
+#define L_DITH_CNTL_DITH10_EN BIT(10)
#define L_GAMMA_PROBE_CTRL 0x1409
#define L_GAMMA_PROBE_COLOR_L 0x140a
#define L_GAMMA_PROBE_COLOR_H 0x140b
diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c
index 3c55ed003359..eb2ac0549d46 100644
--- a/drivers/gpu/drm/meson/meson_venc.c
+++ b/drivers/gpu/drm/meson/meson_venc.c
@@ -6,6 +6,7 @@
*/
#include <linux/export.h>
+#include <linux/iopoll.h>
#include <drm/drm_modes.h>
@@ -1557,6 +1558,205 @@ void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic,
}
EXPORT_SYMBOL_GPL(meson_venc_hdmi_mode_set);
+static unsigned short meson_encl_gamma_table[256] = {
+ 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60,
+ 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124,
+ 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172, 176, 180, 184, 188,
+ 192, 196, 200, 204, 208, 212, 216, 220, 224, 228, 232, 236, 240, 244, 248, 252,
+ 256, 260, 264, 268, 272, 276, 280, 284, 288, 292, 296, 300, 304, 308, 312, 316,
+ 320, 324, 328, 332, 336, 340, 344, 348, 352, 356, 360, 364, 368, 372, 376, 380,
+ 384, 388, 392, 396, 400, 404, 408, 412, 416, 420, 424, 428, 432, 436, 440, 444,
+ 448, 452, 456, 460, 464, 468, 472, 476, 480, 484, 488, 492, 496, 500, 504, 508,
+ 512, 516, 520, 524, 528, 532, 536, 540, 544, 548, 552, 556, 560, 564, 568, 572,
+ 576, 580, 584, 588, 592, 596, 600, 604, 608, 612, 616, 620, 624, 628, 632, 636,
+ 640, 644, 648, 652, 656, 660, 664, 668, 672, 676, 680, 684, 688, 692, 696, 700,
+ 704, 708, 712, 716, 720, 724, 728, 732, 736, 740, 744, 748, 752, 756, 760, 764,
+ 768, 772, 776, 780, 784, 788, 792, 796, 800, 804, 808, 812, 816, 820, 824, 828,
+ 832, 836, 840, 844, 848, 852, 856, 860, 864, 868, 872, 876, 880, 884, 888, 892,
+ 896, 900, 904, 908, 912, 916, 920, 924, 928, 932, 936, 940, 944, 948, 952, 956,
+ 960, 964, 968, 972, 976, 980, 984, 988, 992, 996, 1000, 1004, 1008, 1012, 1016, 1020,
+};
+
+static void meson_encl_set_gamma_table(struct meson_drm *priv, u16 *data,
+ u32 rgb_mask)
+{
+ int i, ret;
+ u32 reg;
+
+ writel_bits_relaxed(L_GAMMA_CNTL_PORT_EN, 0,
+ priv->io_base + _REG(L_GAMMA_CNTL_PORT));
+
+ ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
+ reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
+ if (ret)
+ pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
+
+ writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
+ FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0),
+ priv->io_base + _REG(L_GAMMA_ADDR_PORT));
+
+ for (i = 0; i < 256; i++) {
+ ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
+ reg, reg & L_GAMMA_CNTL_PORT_WR_RDY,
+ 10, 10000);
+ if (ret)
+ pr_warn_once("%s: GAMMA WR_RDY timeout\n", __func__);
+
+ writel_relaxed(data[i], priv->io_base + _REG(L_GAMMA_DATA_PORT));
+ }
+
+ ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
+ reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
+ if (ret)
+ pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
+
+ writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
+ FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0x23),
+ priv->io_base + _REG(L_GAMMA_ADDR_PORT));
+}
+
+void meson_encl_load_gamma(struct meson_drm *priv)
+{
+ meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_R);
+ meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_G);
+ meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_B);
+
+ writel_bits_relaxed(L_GAMMA_CNTL_PORT_EN, L_GAMMA_CNTL_PORT_EN,
+ priv->io_base + _REG(L_GAMMA_CNTL_PORT));
+}
+
+void meson_venc_mipi_dsi_mode_set(struct meson_drm *priv,
+ const struct drm_display_mode *mode)
+{
+ unsigned int max_pxcnt;
+ unsigned int max_lncnt;
+ unsigned int havon_begin;
+ unsigned int havon_end;
+ unsigned int vavon_bline;
+ unsigned int vavon_eline;
+ unsigned int hso_begin;
+ unsigned int hso_end;
+ unsigned int vso_begin;
+ unsigned int vso_end;
+ unsigned int vso_bline;
+ unsigned int vso_eline;
+
+ max_pxcnt = mode->htotal - 1;
+ max_lncnt = mode->vtotal - 1;
+ havon_begin = mode->htotal - mode->hsync_start;
+ havon_end = havon_begin + mode->hdisplay - 1;
+ vavon_bline = mode->vtotal - mode->vsync_start;
+ vavon_eline = vavon_bline + mode->vdisplay - 1;
+ hso_begin = 0;
+ hso_end = mode->hsync_end - mode->hsync_start;
+ vso_begin = 0;
+ vso_end = 0;
+ vso_bline = 0;
+ vso_eline = mode->vsync_end - mode->vsync_start;
+
+ meson_vpp_setup_mux(priv, MESON_VIU_VPP_MUX_ENCL);
+
+ writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
+
+ writel_relaxed(ENCL_PX_LN_CNT_SHADOW_EN, priv->io_base + _REG(ENCL_VIDEO_MODE));
+ writel_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN |
+ ENCL_VIDEO_MODE_ADV_GAIN_HDTV |
+ ENCL_SEL_GAMMA_RGB_IN, priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
+
+ writel_relaxed(ENCL_VIDEO_FILT_CTRL_BYPASS_FILTER,
+ priv->io_base + _REG(ENCL_VIDEO_FILT_CTRL));
+ writel_relaxed(max_pxcnt, priv->io_base + _REG(ENCL_VIDEO_MAX_PXCNT));
+ writel_relaxed(max_lncnt, priv->io_base + _REG(ENCL_VIDEO_MAX_LNCNT));
+ writel_relaxed(havon_begin, priv->io_base + _REG(ENCL_VIDEO_HAVON_BEGIN));
+ writel_relaxed(havon_end, priv->io_base + _REG(ENCL_VIDEO_HAVON_END));
+ writel_relaxed(vavon_bline, priv->io_base + _REG(ENCL_VIDEO_VAVON_BLINE));
+ writel_relaxed(vavon_eline, priv->io_base + _REG(ENCL_VIDEO_VAVON_ELINE));
+
+ writel_relaxed(hso_begin, priv->io_base + _REG(ENCL_VIDEO_HSO_BEGIN));
+ writel_relaxed(hso_end, priv->io_base + _REG(ENCL_VIDEO_HSO_END));
+ writel_relaxed(vso_begin, priv->io_base + _REG(ENCL_VIDEO_VSO_BEGIN));
+ writel_relaxed(vso_end, priv->io_base + _REG(ENCL_VIDEO_VSO_END));
+ writel_relaxed(vso_bline, priv->io_base + _REG(ENCL_VIDEO_VSO_BLINE));
+ writel_relaxed(vso_eline, priv->io_base + _REG(ENCL_VIDEO_VSO_ELINE));
+ writel_relaxed(ENCL_VIDEO_RGBIN_RGB | ENCL_VIDEO_RGBIN_ZBLK,
+ priv->io_base + _REG(ENCL_VIDEO_RGBIN_CTRL));
+
+ /* default black pattern */
+ writel_relaxed(0, priv->io_base + _REG(ENCL_TST_MDSEL));
+ writel_relaxed(0, priv->io_base + _REG(ENCL_TST_Y));
+ writel_relaxed(0, priv->io_base + _REG(ENCL_TST_CB));
+ writel_relaxed(0, priv->io_base + _REG(ENCL_TST_CR));
+ writel_relaxed(1, priv->io_base + _REG(ENCL_TST_EN));
+ writel_bits_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN, 0,
+ priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
+
+ writel_relaxed(1, priv->io_base + _REG(ENCL_VIDEO_EN));
+
+ writel_relaxed(0, priv->io_base + _REG(L_RGB_BASE_ADDR));
+ writel_relaxed(0x400, priv->io_base + _REG(L_RGB_COEFF_ADDR)); /* Magic value */
+
+ writel_relaxed(L_DITH_CNTL_DITH10_EN, priv->io_base + _REG(L_DITH_CNTL_ADDR));
+
+ /* DE signal for TTL */
+ writel_relaxed(havon_begin, priv->io_base + _REG(L_OEH_HS_ADDR));
+ writel_relaxed(havon_end + 1, priv->io_base + _REG(L_OEH_HE_ADDR));
+ writel_relaxed(vavon_bline, priv->io_base + _REG(L_OEH_VS_ADDR));
+ writel_relaxed(vavon_eline, priv->io_base + _REG(L_OEH_VE_ADDR));
+
+ /* DE signal for TTL */
+ writel_relaxed(havon_begin, priv->io_base + _REG(L_OEV1_HS_ADDR));
+ writel_relaxed(havon_end + 1, priv->io_base + _REG(L_OEV1_HE_ADDR));
+ writel_relaxed(vavon_bline, priv->io_base + _REG(L_OEV1_VS_ADDR));
+ writel_relaxed(vavon_eline, priv->io_base + _REG(L_OEV1_VE_ADDR));
+
+ /* Hsync signal for TTL */
+ if (mode->flags & DRM_MODE_FLAG_PHSYNC) {
+ writel_relaxed(hso_end, priv->io_base + _REG(L_STH1_HS_ADDR));
+ writel_relaxed(hso_begin, priv->io_base + _REG(L_STH1_HE_ADDR));
+ } else {
+ writel_relaxed(hso_begin, priv->io_base + _REG(L_STH1_HS_ADDR));
+ writel_relaxed(hso_end, priv->io_base + _REG(L_STH1_HE_ADDR));
+ }
+ writel_relaxed(0, priv->io_base + _REG(L_STH1_VS_ADDR));
+ writel_relaxed(max_lncnt, priv->io_base + _REG(L_STH1_VE_ADDR));
+
+ /* Vsync signal for TTL */
+ writel_relaxed(vso_begin, priv->io_base + _REG(L_STV1_HS_ADDR));
+ writel_relaxed(vso_end, priv->io_base + _REG(L_STV1_HE_ADDR));
+ if (mode->flags & DRM_MODE_FLAG_PVSYNC) {
+ writel_relaxed(vso_eline, priv->io_base + _REG(L_STV1_VS_ADDR));
+ writel_relaxed(vso_bline, priv->io_base + _REG(L_STV1_VE_ADDR));
+ } else {
+ writel_relaxed(vso_bline, priv->io_base + _REG(L_STV1_VS_ADDR));
+ writel_relaxed(vso_eline, priv->io_base + _REG(L_STV1_VE_ADDR));
+ }
+
+ /* DE signal */
+ writel_relaxed(havon_begin, priv->io_base + _REG(L_DE_HS_ADDR));
+ writel_relaxed(havon_end + 1, priv->io_base + _REG(L_DE_HE_ADDR));
+ writel_relaxed(vavon_bline, priv->io_base + _REG(L_DE_VS_ADDR));
+ writel_relaxed(vavon_eline, priv->io_base + _REG(L_DE_VE_ADDR));
+
+ /* Hsync signal */
+ writel_relaxed(hso_begin, priv->io_base + _REG(L_HSYNC_HS_ADDR));
+ writel_relaxed(hso_end, priv->io_base + _REG(L_HSYNC_HE_ADDR));
+ writel_relaxed(0, priv->io_base + _REG(L_HSYNC_VS_ADDR));
+ writel_relaxed(max_lncnt, priv->io_base + _REG(L_HSYNC_VE_ADDR));
+
+ /* Vsync signal */
+ writel_relaxed(vso_begin, priv->io_base + _REG(L_VSYNC_HS_ADDR));
+ writel_relaxed(vso_end, priv->io_base + _REG(L_VSYNC_HE_ADDR));
+ writel_relaxed(vso_bline, priv->io_base + _REG(L_VSYNC_VS_ADDR));
+ writel_relaxed(vso_eline, priv->io_base + _REG(L_VSYNC_VE_ADDR));
+
+ writel_relaxed(0, priv->io_base + _REG(L_INV_CNT_ADDR));
+ writel_relaxed(L_TCON_MISC_SEL_STV1 | L_TCON_MISC_SEL_STV2,
+ priv->io_base + _REG(L_TCON_MISC_SEL_ADDR));
+
+ priv->venc.current_mode = MESON_VENC_MODE_MIPI_DSI;
+}
+EXPORT_SYMBOL_GPL(meson_venc_mipi_dsi_mode_set);
+
void meson_venci_cvbs_mode_set(struct meson_drm *priv,
struct meson_cvbs_enci_mode *mode)
{
@@ -1747,8 +1947,15 @@ unsigned int meson_venci_get_field(struct meson_drm *priv)
void meson_venc_enable_vsync(struct meson_drm *priv)
{
- writel_relaxed(VENC_INTCTRL_ENCI_LNRST_INT_EN,
- priv->io_base + _REG(VENC_INTCTRL));
+ switch (priv->venc.current_mode) {
+ case MESON_VENC_MODE_MIPI_DSI:
+ writel_relaxed(VENC_INTCTRL_ENCP_LNRST_INT_EN,
+ priv->io_base + _REG(VENC_INTCTRL));
+ break;
+ default:
+ writel_relaxed(VENC_INTCTRL_ENCI_LNRST_INT_EN,
+ priv->io_base + _REG(VENC_INTCTRL));
+ }
regmap_update_bits(priv->hhi, HHI_GCLK_MPEG2, BIT(25), BIT(25));
}
diff --git a/drivers/gpu/drm/meson/meson_venc.h b/drivers/gpu/drm/meson/meson_venc.h
index 9138255ffc9e..0f59adb1c6db 100644
--- a/drivers/gpu/drm/meson/meson_venc.h
+++ b/drivers/gpu/drm/meson/meson_venc.h
@@ -21,6 +21,7 @@ enum {
MESON_VENC_MODE_CVBS_PAL,
MESON_VENC_MODE_CVBS_NTSC,
MESON_VENC_MODE_HDMI,
+ MESON_VENC_MODE_MIPI_DSI,
};
struct meson_cvbs_enci_mode {
@@ -47,6 +48,9 @@ struct meson_cvbs_enci_mode {
unsigned int analog_sync_adj;
};
+/* LCD Encoder gamma setup */
+void meson_encl_load_gamma(struct meson_drm *priv);
+
/* HDMI Clock parameters */
enum drm_mode_status
meson_venc_hdmi_supported_mode(const struct drm_display_mode *mode);
@@ -63,6 +67,8 @@ void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic,
unsigned int ycrcb_map,
bool yuv420_mode,
const struct drm_display_mode *mode);
+void meson_venc_mipi_dsi_mode_set(struct meson_drm *priv,
+ const struct drm_display_mode *mode);
unsigned int meson_venci_get_field(struct meson_drm *priv);
void meson_venc_enable_vsync(struct meson_drm *priv);
diff --git a/drivers/gpu/drm/meson/meson_vpp.h b/drivers/gpu/drm/meson/meson_vpp.h
index afc9553ed8d3..b790042a1650 100644
--- a/drivers/gpu/drm/meson/meson_vpp.h
+++ b/drivers/gpu/drm/meson/meson_vpp.h
@@ -12,6 +12,8 @@
struct drm_rect;
struct meson_drm;
+/* Mux VIU/VPP to ENCL */
+#define MESON_VIU_VPP_MUX_ENCL 0x0
/* Mux VIU/VPP to ENCI */
#define MESON_VIU_VPP_MUX_ENCI 0x5
/* Mux VIU/VPP to ENCP */
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 4/6] drm/meson: vclk: add DSI clock config
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
` (2 preceding siblings ...)
2022-01-20 8:33 ` [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 5/6] drm/meson: add DSI encoder Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver Neil Armstrong
5 siblings, 0 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl, devicetree
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong
The DSI path used the ENCL pixel encoder, thus this adds a clock
config using the HDMI PLL in order to feed the ENCL encoder via the
VCLK2 path and the CTS_ENCL clock output.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/meson/meson_vclk.c | 47 ++++++++++++++++++++++++++++++
drivers/gpu/drm/meson/meson_vclk.h | 1 +
2 files changed, 48 insertions(+)
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index 2a82119eb58e..5e4d982be1c8 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -55,6 +55,8 @@
#define VCLK2_DIV_MASK 0xff
#define VCLK2_DIV_EN BIT(16)
#define VCLK2_DIV_RESET BIT(17)
+#define CTS_ENCL_SEL_MASK (0xf << 12)
+#define CTS_ENCL_SEL_SHIFT 12
#define CTS_VDAC_SEL_MASK (0xf << 28)
#define CTS_VDAC_SEL_SHIFT 28
#define HHI_VIID_CLK_CNTL 0x12c /* 0x4b offset in data sheet */
@@ -83,6 +85,7 @@
#define VCLK_DIV12_EN BIT(4)
#define HHI_VID_CLK_CNTL2 0x194 /* 0x65 offset in data sheet */
#define CTS_ENCI_EN BIT(0)
+#define CTS_ENCL_EN BIT(3)
#define CTS_ENCP_EN BIT(2)
#define CTS_VDAC_EN BIT(4)
#define HDMI_TX_PIXEL_EN BIT(5)
@@ -1024,6 +1027,47 @@ static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_EN, VCLK_EN);
}
+static void meson_dsi_clock_config(struct meson_drm *priv, unsigned int freq)
+{
+ meson_hdmi_pll_generic_set(priv, freq * 10);
+
+ /* Setup vid_pll divider value /5 */
+ meson_vid_pll_set(priv, VID_PLL_DIV_5);
+
+ /* Disable VCLK2 */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, 0);
+
+ /* Setup the VCLK2 divider value /2 */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, VCLK2_DIV_MASK, 2 - 1);
+
+ /* select vid_pll for vclk2 */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
+ VCLK2_SEL_MASK, (0 << VCLK2_SEL_SHIFT));
+
+ /* enable vclk2 gate */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, VCLK2_EN);
+
+ /* select vclk2_div1 for encl */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
+ CTS_ENCL_SEL_MASK, (8 << CTS_ENCL_SEL_SHIFT));
+
+ /* release vclk2_div_reset and enable vclk2_div */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, VCLK2_DIV_EN | VCLK2_DIV_RESET,
+ VCLK2_DIV_EN);
+
+ /* enable vclk2_div1 gate */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_DIV1_EN, VCLK2_DIV1_EN);
+
+ /* reset vclk2 */
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_SOFT_RESET, VCLK2_SOFT_RESET);
+ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_SOFT_RESET, 0);
+
+ /* enable encl_clk */
+ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, CTS_ENCL_EN, CTS_ENCL_EN);
+
+ usleep_range(10000, 11000);
+}
+
void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
unsigned int phy_freq, unsigned int vclk_freq,
unsigned int venc_freq, unsigned int dac_freq,
@@ -1050,6 +1094,9 @@ void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
meson_vclk_set(priv, phy_freq, 0, 0, 0,
VID_PLL_DIV_5, 2, 1, 1, false, false);
return;
+ } else if (target == MESON_VCLK_TARGET_DSI) {
+ meson_dsi_clock_config(priv, phy_freq);
+ return;
}
hdmi_tx_div = vclk_freq / dac_freq;
diff --git a/drivers/gpu/drm/meson/meson_vclk.h b/drivers/gpu/drm/meson/meson_vclk.h
index 60617aaf18dd..1152b3af8d2e 100644
--- a/drivers/gpu/drm/meson/meson_vclk.h
+++ b/drivers/gpu/drm/meson/meson_vclk.h
@@ -17,6 +17,7 @@ enum {
MESON_VCLK_TARGET_CVBS = 0,
MESON_VCLK_TARGET_HDMI = 1,
MESON_VCLK_TARGET_DMT = 2,
+ MESON_VCLK_TARGET_DSI = 3,
};
/* 27MHz is the CVBS Pixel Clock */
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 5/6] drm/meson: add DSI encoder
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
` (3 preceding siblings ...)
2022-01-20 8:33 ` [PATCH v2 4/6] drm/meson: vclk: add DSI clock config Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 14:22 ` Jagan Teki
2022-01-20 8:33 ` [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver Neil Armstrong
5 siblings, 1 reply; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong
This adds an encoder bridge designed to drive a MIPI-DSI display
by using the ENCL encoder through the internal MIPI DSI transceiver
connected to the output of the ENCL pixel encoder.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/meson/Makefile | 2 +-
drivers/gpu/drm/meson/meson_drv.c | 7 +
drivers/gpu/drm/meson/meson_encoder_dsi.c | 160 ++++++++++++++++++++++
drivers/gpu/drm/meson/meson_encoder_dsi.h | 12 ++
4 files changed, 180 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.c
create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.h
diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
index 3afa31bdc950..833e18c20603 100644
--- a/drivers/gpu/drm/meson/Makefile
+++ b/drivers/gpu/drm/meson/Makefile
@@ -2,7 +2,7 @@
meson-drm-y := meson_drv.o meson_plane.o meson_crtc.o meson_encoder_cvbs.o
meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_overlay.o
meson-drm-y += meson_rdma.o meson_osd_afbcd.o
-meson-drm-y += meson_encoder_hdmi.o
+meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
obj-$(CONFIG_DRM_MESON) += meson-drm.o
obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 26aeaf0ab86e..15344cf9f913 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -33,6 +33,7 @@
#include "meson_registers.h"
#include "meson_encoder_cvbs.h"
#include "meson_encoder_hdmi.h"
+#include "meson_encoder_dsi.h"
#include "meson_viu.h"
#include "meson_vpp.h"
#include "meson_rdma.h"
@@ -323,6 +324,12 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
if (ret)
goto exit_afbcd;
+ if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+ ret = meson_encoder_dsi_init(priv);
+ if (ret)
+ goto free_drm;
+ }
+
ret = meson_plane_create(priv);
if (ret)
goto exit_afbcd;
diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/meson/meson_encoder_dsi.c
new file mode 100644
index 000000000000..12a586316183
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_device.h>
+#include <drm/drm_probe_helper.h>
+
+#include "meson_drv.h"
+#include "meson_encoder_dsi.h"
+#include "meson_registers.h"
+#include "meson_venc.h"
+#include "meson_vclk.h"
+
+struct meson_encoder_dsi {
+ struct drm_encoder encoder;
+ struct drm_bridge bridge;
+ struct drm_bridge *next_bridge;
+ struct meson_drm *priv;
+};
+
+#define bridge_to_meson_encoder_dsi(x) \
+ container_of(x, struct meson_encoder_dsi, bridge)
+
+static int meson_encoder_dsi_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
+
+ return drm_bridge_attach(bridge->encoder, encoder_dsi->next_bridge,
+ &encoder_dsi->bridge, flags);
+}
+
+static void meson_encoder_dsi_mode_set(struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
+{
+ struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
+ struct meson_drm *priv = encoder_dsi->priv;
+
+ meson_vclk_setup(priv, MESON_VCLK_TARGET_DSI, mode->clock, 0, 0, 0, false);
+
+ meson_venc_mipi_dsi_mode_set(priv, mode);
+ meson_encl_load_gamma(priv);
+
+ writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
+
+ writel_bits_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN, ENCL_VIDEO_MODE_ADV_VFIFO_EN,
+ priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
+ writel_relaxed(0, priv->io_base + _REG(ENCL_TST_EN));
+}
+
+static void meson_encoder_dsi_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state)
+{
+ struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
+ struct meson_drm *priv = encoder_dsi->priv;
+
+ writel_bits_relaxed(BIT(0), 0, priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
+
+ writel_relaxed(1, priv->io_base + _REG(ENCL_VIDEO_EN));
+}
+
+static void meson_encoder_dsi_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state)
+{
+ struct meson_encoder_dsi *meson_encoder_dsi =
+ bridge_to_meson_encoder_dsi(bridge);
+ struct meson_drm *priv = meson_encoder_dsi->priv;
+
+ writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
+
+ writel_bits_relaxed(BIT(0), BIT(0), priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
+}
+
+static const struct drm_bridge_funcs meson_encoder_dsi_bridge_funcs = {
+ .attach = meson_encoder_dsi_attach,
+ /*
+ * TOFIX: remove when dw-mipi-dsi moves out of mode_set
+ * We should get rid of mode_set, but until dw-mipi-dsi uses it
+ * we need to setup the pixel clock before the following
+ * bridge tries to setup the HW.
+ */
+ .mode_set = meson_encoder_dsi_mode_set,
+ .atomic_enable = meson_encoder_dsi_atomic_enable,
+ .atomic_disable = meson_encoder_dsi_atomic_disable,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+};
+
+int meson_encoder_dsi_init(struct meson_drm *priv)
+{
+ struct meson_encoder_dsi *meson_encoder_dsi;
+ struct device_node *remote;
+ int ret;
+
+ meson_encoder_dsi = devm_kzalloc(priv->dev, sizeof(*meson_encoder_dsi), GFP_KERNEL);
+ if (!meson_encoder_dsi)
+ return -ENOMEM;
+
+ /* DSI Transceiver Bridge */
+ remote = of_graph_get_remote_node(priv->dev->of_node, 2, 0);
+ if (!remote) {
+ dev_err(priv->dev, "DSI transceiver device is disabled");
+ return 0;
+ }
+
+ meson_encoder_dsi->next_bridge = of_drm_find_bridge(remote);
+ if (!meson_encoder_dsi->next_bridge) {
+ dev_dbg(priv->dev, "Failed to find DSI transceiver bridge: %d\n", ret);
+ return -EPROBE_DEFER;
+ }
+
+ /* DSI Encoder Bridge */
+ meson_encoder_dsi->bridge.funcs = &meson_encoder_dsi_bridge_funcs;
+ meson_encoder_dsi->bridge.of_node = priv->dev->of_node;
+ meson_encoder_dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
+
+ drm_bridge_add(&meson_encoder_dsi->bridge);
+
+ meson_encoder_dsi->priv = priv;
+
+ /* Encoder */
+ ret = drm_simple_encoder_init(priv->drm, &meson_encoder_dsi->encoder,
+ DRM_MODE_ENCODER_DSI);
+ if (ret) {
+ dev_err(priv->dev, "Failed to init DSI encoder: %d\n", ret);
+ return ret;
+ }
+
+ meson_encoder_dsi->encoder.possible_crtcs = BIT(0);
+
+ /* Attach DSI Encoder Bridge to Encoder */
+ ret = drm_bridge_attach(&meson_encoder_dsi->encoder, &meson_encoder_dsi->bridge, NULL, 0);
+ if (ret) {
+ dev_err(priv->dev, "Failed to attach bridge: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * We should have now in place:
+ * encoder->[dsi encoder bridge]->[dw-mipi-dsi bridge]->[panel bridge]->[panel]
+ */
+
+ dev_dbg(priv->dev, "DSI encoder initialized\n");
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.h b/drivers/gpu/drm/meson/meson_encoder_dsi.h
new file mode 100644
index 000000000000..0f4b641eb633
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2021 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef __MESON_ENCODER_DSI_H
+#define __MESON_ENCODER_DSI_H
+
+int meson_encoder_dsi_init(struct meson_drm *priv);
+
+#endif /* __MESON_ENCODER_DSI_H */
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
` (4 preceding siblings ...)
2022-01-20 8:33 ` [PATCH v2 5/6] drm/meson: add DSI encoder Neil Armstrong
@ 2022-01-20 8:33 ` Neil Armstrong
2022-01-20 14:24 ` Jagan Teki
2022-01-20 18:33 ` Jagan Teki
5 siblings, 2 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 8:33 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel, Neil Armstrong
The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
Glue on other Amlogic SoCs.
This adds support for the Glue managing the transceiver, mimicing the init flow provided
by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
Analog PHY in the proper way.
An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
DW-MIPI-DSI transceiver.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/meson/Kconfig | 7 +
drivers/gpu/drm/meson/Makefile | 1 +
drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 357 ++++++++++++++++++++++
drivers/gpu/drm/meson/meson_dw_mipi_dsi.h | 160 ++++++++++
4 files changed, 525 insertions(+)
create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig
index 6c70fc3214af..71a1364b51e1 100644
--- a/drivers/gpu/drm/meson/Kconfig
+++ b/drivers/gpu/drm/meson/Kconfig
@@ -17,3 +17,10 @@ config DRM_MESON_DW_HDMI
default y if DRM_MESON
select DRM_DW_HDMI
imply DRM_DW_HDMI_I2S_AUDIO
+
+config DRM_MESON_DW_MIPI_DSI
+ tristate "MIPI DSI Synopsys Controller support for Amlogic Meson Display"
+ depends on DRM_MESON
+ default y if DRM_MESON
+ select DRM_DW_MIPI_DSI
+ select GENERIC_PHY_MIPI_DPHY
diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
index 833e18c20603..43071bdbd4b9 100644
--- a/drivers/gpu/drm/meson/Makefile
+++ b/drivers/gpu/drm/meson/Makefile
@@ -6,3 +6,4 @@ meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
obj-$(CONFIG_DRM_MESON) += meson-drm.o
obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
+obj-$(CONFIG_DRM_MESON_DW_MIPI_DSI) += meson_dw_mipi_dsi.o
diff --git a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
new file mode 100644
index 000000000000..75f373152caf
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
@@ -0,0 +1,357 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2021 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/reset.h>
+#include <linux/phy/phy.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/bridge/dw_mipi_dsi.h>
+#include <drm/drm_mipi_dsi.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_device.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_print.h>
+
+#include "meson_drv.h"
+#include "meson_dw_mipi_dsi.h"
+#include "meson_registers.h"
+#include "meson_venc.h"
+
+#define DRIVER_NAME "meson-dw-mipi-dsi"
+#define DRIVER_DESC "Amlogic Meson MIPI-DSI DRM driver"
+
+struct meson_dw_mipi_dsi {
+ struct meson_drm *priv;
+ struct device *dev;
+ void __iomem *base;
+ struct phy *phy;
+ union phy_configure_opts phy_opts;
+ struct dw_mipi_dsi *dmd;
+ struct dw_mipi_dsi_plat_data pdata;
+ struct mipi_dsi_device *dsi_device;
+ const struct drm_display_mode *mode;
+ struct clk *px_clk;
+};
+
+#define encoder_to_meson_dw_mipi_dsi(x) \
+ container_of(x, struct meson_dw_mipi_dsi, encoder)
+
+static void meson_dw_mipi_dsi_hw_init(struct meson_dw_mipi_dsi *mipi_dsi)
+{
+ /* Software reset */
+ writel_bits_relaxed(MIPI_DSI_TOP_SW_RESET_DWC | MIPI_DSI_TOP_SW_RESET_INTR |
+ MIPI_DSI_TOP_SW_RESET_DPI | MIPI_DSI_TOP_SW_RESET_TIMING,
+ MIPI_DSI_TOP_SW_RESET_DWC | MIPI_DSI_TOP_SW_RESET_INTR |
+ MIPI_DSI_TOP_SW_RESET_DPI | MIPI_DSI_TOP_SW_RESET_TIMING,
+ mipi_dsi->base + MIPI_DSI_TOP_SW_RESET);
+ writel_bits_relaxed(MIPI_DSI_TOP_SW_RESET_DWC | MIPI_DSI_TOP_SW_RESET_INTR |
+ MIPI_DSI_TOP_SW_RESET_DPI | MIPI_DSI_TOP_SW_RESET_TIMING,
+ 0, mipi_dsi->base + MIPI_DSI_TOP_SW_RESET);
+
+ /* Enable clocks */
+ writel_bits_relaxed(MIPI_DSI_TOP_CLK_SYSCLK_EN | MIPI_DSI_TOP_CLK_PIXCLK_EN,
+ MIPI_DSI_TOP_CLK_SYSCLK_EN | MIPI_DSI_TOP_CLK_PIXCLK_EN,
+ mipi_dsi->base + MIPI_DSI_TOP_CLK_CNTL);
+
+ /* Take memory out of power down */
+ writel_relaxed(0, mipi_dsi->base + MIPI_DSI_TOP_MEM_PD);
+}
+
+static int dw_mipi_dsi_phy_init(void *priv_data)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+ unsigned int dpi_data_format, venc_data_width;
+ int ret;
+
+ ret = clk_set_rate(mipi_dsi->px_clk, mipi_dsi->phy_opts.mipi_dphy.hs_clk_rate);
+ if (ret) {
+ pr_err("Failed to set DSI PLL rate %lu\n",
+ mipi_dsi->phy_opts.mipi_dphy.hs_clk_rate);
+
+ return ret;
+ }
+
+ switch (mipi_dsi->dsi_device->format) {
+ case MIPI_DSI_FMT_RGB888:
+ dpi_data_format = DPI_COLOR_24BIT;
+ venc_data_width = VENC_IN_COLOR_24B;
+ break;
+ case MIPI_DSI_FMT_RGB666:
+ dpi_data_format = DPI_COLOR_18BIT_CFG_2;
+ venc_data_width = VENC_IN_COLOR_18B;
+ break;
+ case MIPI_DSI_FMT_RGB666_PACKED:
+ case MIPI_DSI_FMT_RGB565:
+ return -EINVAL;
+ };
+
+ /* Configure color format for DPI register */
+ writel_relaxed(FIELD_PREP(MIPI_DSI_TOP_DPI_COLOR_MODE, dpi_data_format) |
+ FIELD_PREP(MIPI_DSI_TOP_IN_COLOR_MODE, venc_data_width) |
+ FIELD_PREP(MIPI_DSI_TOP_COMP2_SEL, 2) |
+ FIELD_PREP(MIPI_DSI_TOP_COMP1_SEL, 1) |
+ FIELD_PREP(MIPI_DSI_TOP_COMP0_SEL, 0) |
+ (mipi_dsi->mode->flags & DRM_MODE_FLAG_NHSYNC ?
+ 0 : MIPI_DSI_TOP_HSYNC_INVERT) |
+ (mipi_dsi->mode->flags & DRM_MODE_FLAG_NVSYNC ?
+ 0 : MIPI_DSI_TOP_VSYNC_INVERT),
+ mipi_dsi->base + MIPI_DSI_TOP_CNTL);
+
+ return phy_configure(mipi_dsi->phy, &mipi_dsi->phy_opts);
+}
+
+static void dw_mipi_dsi_phy_power_on(void *priv_data)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+
+ if (phy_power_on(mipi_dsi->phy))
+ dev_warn(mipi_dsi->dev, "Failed to power on PHY\n");
+}
+
+static void dw_mipi_dsi_phy_power_off(void *priv_data)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+
+ if (phy_power_off(mipi_dsi->phy))
+ dev_warn(mipi_dsi->dev, "Failed to power off PHY\n");
+}
+
+static int
+dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode,
+ unsigned long mode_flags, u32 lanes, u32 format,
+ unsigned int *lane_mbps)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+ int bpp;
+
+ mipi_dsi->mode = mode;
+
+ bpp = mipi_dsi_pixel_format_to_bpp(mipi_dsi->dsi_device->format);
+
+ phy_mipi_dphy_get_default_config(mode->clock * 1000,
+ bpp, mipi_dsi->dsi_device->lanes,
+ &mipi_dsi->phy_opts.mipi_dphy);
+
+ *lane_mbps = mipi_dsi->phy_opts.mipi_dphy.hs_clk_rate / 1000000;
+
+ return 0;
+}
+
+static int
+dw_mipi_dsi_phy_get_timing(void *priv_data, unsigned int lane_mbps,
+ struct dw_mipi_dsi_dphy_timing *timing)
+{
+ /* TOFIX handle other cases */
+
+ timing->clk_lp2hs = 37;
+ timing->clk_hs2lp = 135;
+ timing->data_lp2hs = 50;
+ timing->data_hs2lp = 3;
+
+ return 0;
+}
+
+static int
+dw_mipi_dsi_get_esc_clk_rate(void *priv_data, unsigned int *esc_clk_rate)
+{
+ *esc_clk_rate = 4; /* Mhz */
+
+ return 0;
+}
+
+static const struct dw_mipi_dsi_phy_ops meson_dw_mipi_dsi_phy_ops = {
+ .init = dw_mipi_dsi_phy_init,
+ .power_on = dw_mipi_dsi_phy_power_on,
+ .power_off = dw_mipi_dsi_phy_power_off,
+ .get_lane_mbps = dw_mipi_dsi_get_lane_mbps,
+ .get_timing = dw_mipi_dsi_phy_get_timing,
+ .get_esc_clk_rate = dw_mipi_dsi_get_esc_clk_rate,
+};
+
+static int meson_dw_mipi_dsi_bind(struct device *dev, struct device *master, void *data)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = dev_get_drvdata(dev);
+ struct drm_device *drm = data;
+ struct meson_drm *priv = drm->dev_private;
+
+ /* Check before if we are supposed to have a sub-device... */
+ if (!mipi_dsi->dsi_device) {
+ dw_mipi_dsi_remove(mipi_dsi->dmd);
+ return -EPROBE_DEFER;
+ }
+
+ mipi_dsi->priv = priv;
+
+ meson_dw_mipi_dsi_hw_init(mipi_dsi);
+
+ return 0;
+}
+
+static const struct component_ops meson_dw_mipi_dsi_ops = {
+ .bind = meson_dw_mipi_dsi_bind,
+};
+
+static int meson_dw_mipi_dsi_host_attach(void *priv_data,
+ struct mipi_dsi_device *device)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+
+ mipi_dsi->dsi_device = device;
+
+ switch (device->format) {
+ case MIPI_DSI_FMT_RGB888:
+ break;
+ case MIPI_DSI_FMT_RGB666:
+ break;
+ case MIPI_DSI_FMT_RGB666_PACKED:
+ case MIPI_DSI_FMT_RGB565:
+ dev_err(mipi_dsi->dev, "invalid pixel format %d\n", device->format);
+ return -EINVAL;
+ };
+
+ return phy_init(mipi_dsi->phy);
+}
+
+static int meson_dw_mipi_dsi_host_detach(void *priv_data,
+ struct mipi_dsi_device *device)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = priv_data;
+
+ if (device == mipi_dsi->dsi_device)
+ mipi_dsi->dsi_device = NULL;
+ else
+ return -EINVAL;
+
+ return phy_exit(mipi_dsi->phy);
+}
+
+static const struct dw_mipi_dsi_host_ops meson_dw_mipi_dsi_host_ops = {
+ .attach = meson_dw_mipi_dsi_host_attach,
+ .detach = meson_dw_mipi_dsi_host_detach,
+};
+
+static int meson_dw_mipi_dsi_probe(struct platform_device *pdev)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi;
+ struct reset_control *top_rst;
+ struct resource *res;
+ int ret;
+
+ mipi_dsi = devm_kzalloc(&pdev->dev, sizeof(*mipi_dsi), GFP_KERNEL);
+ if (!mipi_dsi)
+ return -ENOMEM;
+
+ mipi_dsi->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mipi_dsi->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mipi_dsi->base))
+ return PTR_ERR(mipi_dsi->base);
+
+ mipi_dsi->phy = devm_phy_get(&pdev->dev, "dphy");
+ if (IS_ERR(mipi_dsi->phy)) {
+ ret = PTR_ERR(mipi_dsi->phy);
+ dev_err(&pdev->dev, "failed to get mipi dphy: %d\n", ret);
+ return ret;
+ }
+
+ mipi_dsi->px_clk = devm_clk_get(&pdev->dev, "px_clk");
+ if (IS_ERR(mipi_dsi->px_clk)) {
+ dev_err(&pdev->dev, "Unable to get PLL clk\n");
+ return PTR_ERR(mipi_dsi->px_clk);
+ }
+
+ /*
+ * We use a TOP reset signal because the APB reset signal
+ * is handled by the TOP control registers.
+ */
+ top_rst = devm_reset_control_get_exclusive(&pdev->dev, "top");
+ if (IS_ERR(top_rst)) {
+ ret = PTR_ERR(top_rst);
+
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "Unable to get reset control: %d\n", ret);
+
+ return ret;
+ }
+
+ ret = clk_prepare_enable(mipi_dsi->px_clk);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to prepare/enable PX clock\n");
+ return ret;
+ }
+
+ reset_control_assert(top_rst);
+ usleep_range(10, 20);
+ reset_control_deassert(top_rst);
+
+ /* MIPI DSI Controller */
+
+ mipi_dsi->pdata.base = mipi_dsi->base;
+ mipi_dsi->pdata.max_data_lanes = 4;
+ mipi_dsi->pdata.phy_ops = &meson_dw_mipi_dsi_phy_ops;
+ mipi_dsi->pdata.host_ops = &meson_dw_mipi_dsi_host_ops;
+ mipi_dsi->pdata.priv_data = mipi_dsi;
+ platform_set_drvdata(pdev, mipi_dsi);
+
+ mipi_dsi->dmd = dw_mipi_dsi_probe(pdev, &mipi_dsi->pdata);
+ if (IS_ERR(mipi_dsi->dmd)) {
+ ret = PTR_ERR(mipi_dsi->dmd);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "Failed to probe dw_mipi_dsi: %d\n", ret);
+ goto err_clkdisable;
+ }
+
+ return component_add(mipi_dsi->dev, &meson_dw_mipi_dsi_ops);
+
+err_clkdisable:
+ clk_disable_unprepare(mipi_dsi->px_clk);
+
+ return ret;
+}
+
+static int meson_dw_mipi_dsi_remove(struct platform_device *pdev)
+{
+ struct meson_dw_mipi_dsi *mipi_dsi = dev_get_drvdata(&pdev->dev);
+
+ dw_mipi_dsi_remove(mipi_dsi->dmd);
+
+ component_del(mipi_dsi->dev, &meson_dw_mipi_dsi_ops);
+
+ clk_disable_unprepare(mipi_dsi->px_clk);
+
+ return 0;
+}
+
+static const struct of_device_id meson_dw_mipi_dsi_of_table[] = {
+ { .compatible = "amlogic,meson-g12a-dw-mipi-dsi", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, meson_dw_mipi_dsi_of_table);
+
+static struct platform_driver meson_dw_mipi_dsi_platform_driver = {
+ .probe = meson_dw_mipi_dsi_probe,
+ .remove = meson_dw_mipi_dsi_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .of_match_table = meson_dw_mipi_dsi_of_table,
+ },
+};
+module_platform_driver(meson_dw_mipi_dsi_platform_driver);
+
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.h b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
new file mode 100644
index 000000000000..e1bd6b85d6a3
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
@@ -0,0 +1,160 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2018 Amlogic, Inc. All rights reserved.
+ */
+
+#ifndef __MESON_DW_MIPI_DSI_H
+#define __MESON_DW_MIPI_DSI_H
+
+/* Top-level registers */
+/* [31: 4] Reserved. Default 0.
+ * [3] RW timing_rst_n: Default 1.
+ * 1=Assert SW reset of timing feature. 0=Release reset.
+ * [2] RW dpi_rst_n: Default 1.
+ * 1=Assert SW reset on mipi_dsi_host_dpi block. 0=Release reset.
+ * [1] RW intr_rst_n: Default 1.
+ * 1=Assert SW reset on mipi_dsi_host_intr block. 0=Release reset.
+ * [0] RW dwc_rst_n: Default 1.
+ * 1=Assert SW reset on IP core. 0=Release reset.
+ */
+#define MIPI_DSI_TOP_SW_RESET 0x3c0
+
+#define MIPI_DSI_TOP_SW_RESET_DWC BIT(0)
+#define MIPI_DSI_TOP_SW_RESET_INTR BIT(1)
+#define MIPI_DSI_TOP_SW_RESET_DPI BIT(2)
+#define MIPI_DSI_TOP_SW_RESET_TIMING BIT(3)
+
+/* [31: 5] Reserved. Default 0.
+ * [4] RW manual_edpihalt: Default 0.
+ * 1=Manual suspend VencL; 0=do not suspend VencL.
+ * [3] RW auto_edpihalt_en: Default 0.
+ * 1=Enable IP's edpihalt signal to suspend VencL;
+ * 0=IP's edpihalt signal does not affect VencL.
+ * [2] RW clock_freerun: Apply to auto-clock gate only. Default 0.
+ * 0=Default, use auto-clock gating to save power;
+ * 1=use free-run clock, disable auto-clock gating, for debug mode.
+ * [1] RW enable_pixclk: A manual clock gate option, due to DWC IP does not
+ * have auto-clock gating. 1=Enable pixclk. Default 0.
+ * [0] RW enable_sysclk: A manual clock gate option, due to DWC IP does not
+ * have auto-clock gating. 1=Enable sysclk. Default 0.
+ */
+#define MIPI_DSI_TOP_CLK_CNTL 0x3c4
+
+#define MIPI_DSI_TOP_CLK_SYSCLK_EN BIT(0)
+#define MIPI_DSI_TOP_CLK_PIXCLK_EN BIT(1)
+
+/* [31:24] Reserved. Default 0.
+ * [23:20] RW dpi_color_mode: Define DPI pixel format. Default 0.
+ * 0=16-bit RGB565 config 1;
+ * 1=16-bit RGB565 config 2;
+ * 2=16-bit RGB565 config 3;
+ * 3=18-bit RGB666 config 1;
+ * 4=18-bit RGB666 config 2;
+ * 5=24-bit RGB888;
+ * 6=20-bit YCbCr 4:2:2;
+ * 7=24-bit YCbCr 4:2:2;
+ * 8=16-bit YCbCr 4:2:2;
+ * 9=30-bit RGB;
+ * 10=36-bit RGB;
+ * 11=12-bit YCbCr 4:2:0.
+ * [19] Reserved. Default 0.
+ * [18:16] RW in_color_mode: Define VENC data width. Default 0.
+ * 0=30-bit pixel;
+ * 1=24-bit pixel;
+ * 2=18-bit pixel, RGB666;
+ * 3=16-bit pixel, RGB565.
+ * [15:14] RW chroma_subsample: Define method of chroma subsampling. Default 0.
+ * Applicable to YUV422 or YUV420 only.
+ * 0=Use even pixel's chroma;
+ * 1=Use odd pixel's chroma;
+ * 2=Use averaged value between even and odd pair.
+ * [13:12] RW comp2_sel: Select which component to be Cr or B: Default 2.
+ * 0=comp0; 1=comp1; 2=comp2.
+ * [11:10] RW comp1_sel: Select which component to be Cb or G: Default 1.
+ * 0=comp0; 1=comp1; 2=comp2.
+ * [9: 8] RW comp0_sel: Select which component to be Y or R: Default 0.
+ * 0=comp0; 1=comp1; 2=comp2.
+ * [7] Reserved. Default 0.
+ * [6] RW de_pol: Default 0.
+ * If DE input is active low, set to 1 to invert to active high.
+ * [5] RW hsync_pol: Default 0.
+ * If HS input is active low, set to 1 to invert to active high.
+ * [4] RW vsync_pol: Default 0.
+ * If VS input is active low, set to 1 to invert to active high.
+ * [3] RW dpicolorm: Signal to IP. Default 0.
+ * [2] RW dpishutdn: Signal to IP. Default 0.
+ * [1] Reserved. Default 0.
+ * [0] Reserved. Default 0.
+ */
+#define MIPI_DSI_TOP_CNTL 0x3c8
+
+/* VENC data width */
+#define VENC_IN_COLOR_30B 0x0
+#define VENC_IN_COLOR_24B 0x1
+#define VENC_IN_COLOR_18B 0x2
+#define VENC_IN_COLOR_16B 0x3
+
+/* DPI pixel format */
+#define DPI_COLOR_16BIT_CFG_1 0
+#define DPI_COLOR_16BIT_CFG_2 1
+#define DPI_COLOR_16BIT_CFG_3 2
+#define DPI_COLOR_18BIT_CFG_1 3
+#define DPI_COLOR_18BIT_CFG_2 4
+#define DPI_COLOR_24BIT 5
+#define DPI_COLOR_20BIT_YCBCR_422 6
+#define DPI_COLOR_24BIT_YCBCR_422 7
+#define DPI_COLOR_16BIT_YCBCR_422 8
+#define DPI_COLOR_30BIT 9
+#define DPI_COLOR_36BIT 10
+#define DPI_COLOR_12BIT_YCBCR_420 11
+
+#define MIPI_DSI_TOP_DPI_COLOR_MODE GENMASK(23, 20)
+#define MIPI_DSI_TOP_IN_COLOR_MODE GENMASK(18, 16)
+#define MIPI_DSI_TOP_CHROMA_SUBSAMPLE GENMASK(15, 14)
+#define MIPI_DSI_TOP_COMP2_SEL GENMASK(13, 12)
+#define MIPI_DSI_TOP_COMP1_SEL GENMASK(11, 10)
+#define MIPI_DSI_TOP_COMP0_SEL GENMASK(9, 8)
+#define MIPI_DSI_TOP_DE_INVERT BIT(6)
+#define MIPI_DSI_TOP_HSYNC_INVERT BIT(5)
+#define MIPI_DSI_TOP_VSYNC_INVERT BIT(4)
+#define MIPI_DSI_TOP_DPICOLORM BIT(3)
+#define MIPI_DSI_TOP_DPISHUTDN BIT(2)
+
+#define MIPI_DSI_TOP_SUSPEND_CNTL 0x3cc
+#define MIPI_DSI_TOP_SUSPEND_LINE 0x3d0
+#define MIPI_DSI_TOP_SUSPEND_PIX 0x3d4
+#define MIPI_DSI_TOP_MEAS_CNTL 0x3d8
+/* [0] R stat_edpihalt: edpihalt signal from IP. Default 0. */
+#define MIPI_DSI_TOP_STAT 0x3dc
+#define MIPI_DSI_TOP_MEAS_STAT_TE0 0x3e0
+#define MIPI_DSI_TOP_MEAS_STAT_TE1 0x3e4
+#define MIPI_DSI_TOP_MEAS_STAT_VS0 0x3e8
+#define MIPI_DSI_TOP_MEAS_STAT_VS1 0x3ec
+/* [31:16] RW intr_stat/clr. Default 0.
+ * For each bit, read as this interrupt level status,
+ * write 1 to clear.
+ * [31:22] Reserved
+ * [ 21] stat/clr of eof interrupt
+ * [ 21] vde_fall interrupt
+ * [ 19] stat/clr of de_rise interrupt
+ * [ 18] stat/clr of vs_fall interrupt
+ * [ 17] stat/clr of vs_rise interrupt
+ * [ 16] stat/clr of dwc_edpite interrupt
+ * [15: 0] RW intr_enable. Default 0.
+ * For each bit, 1=enable this interrupt, 0=disable.
+ * [15: 6] Reserved
+ * [ 5] eof interrupt
+ * [ 4] de_fall interrupt
+ * [ 3] de_rise interrupt
+ * [ 2] vs_fall interrupt
+ * [ 1] vs_rise interrupt
+ * [ 0] dwc_edpite interrupt
+ */
+#define MIPI_DSI_TOP_INTR_CNTL_STAT 0x3f0
+// 31: 2 Reserved. Default 0.
+// 1: 0 RW mem_pd. Default 3.
+#define MIPI_DSI_TOP_MEM_PD 0x3f4
+
+#endif /* __MESON_DW_MIPI_DSI_H */
--
2.25.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH v2 5/6] drm/meson: add DSI encoder
2022-01-20 8:33 ` [PATCH v2 5/6] drm/meson: add DSI encoder Neil Armstrong
@ 2022-01-20 14:22 ` Jagan Teki
0 siblings, 0 replies; 13+ messages in thread
From: Jagan Teki @ 2022-01-20 14:22 UTC (permalink / raw)
To: Neil Armstrong
Cc: dri-devel, martin.blumenstingl, linux-amlogic, linux-kernel,
linux-arm-kernel
On Thu, Jan 20, 2022 at 2:04 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> This adds an encoder bridge designed to drive a MIPI-DSI display
> by using the ENCL encoder through the internal MIPI DSI transceiver
> connected to the output of the ENCL pixel encoder.
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
> drivers/gpu/drm/meson/Makefile | 2 +-
> drivers/gpu/drm/meson/meson_drv.c | 7 +
> drivers/gpu/drm/meson/meson_encoder_dsi.c | 160 ++++++++++++++++++++++
> drivers/gpu/drm/meson/meson_encoder_dsi.h | 12 ++
> 4 files changed, 180 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.c
> create mode 100644 drivers/gpu/drm/meson/meson_encoder_dsi.h
>
> diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
> index 3afa31bdc950..833e18c20603 100644
> --- a/drivers/gpu/drm/meson/Makefile
> +++ b/drivers/gpu/drm/meson/Makefile
> @@ -2,7 +2,7 @@
> meson-drm-y := meson_drv.o meson_plane.o meson_crtc.o meson_encoder_cvbs.o
> meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_overlay.o
> meson-drm-y += meson_rdma.o meson_osd_afbcd.o
> -meson-drm-y += meson_encoder_hdmi.o
> +meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
>
> obj-$(CONFIG_DRM_MESON) += meson-drm.o
> obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
> index 26aeaf0ab86e..15344cf9f913 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -33,6 +33,7 @@
> #include "meson_registers.h"
> #include "meson_encoder_cvbs.h"
> #include "meson_encoder_hdmi.h"
> +#include "meson_encoder_dsi.h"
> #include "meson_viu.h"
> #include "meson_vpp.h"
> #include "meson_rdma.h"
> @@ -323,6 +324,12 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
> if (ret)
> goto exit_afbcd;
>
> + if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
> + ret = meson_encoder_dsi_init(priv);
> + if (ret)
> + goto free_drm;
> + }
> +
> ret = meson_plane_create(priv);
> if (ret)
> goto exit_afbcd;
> diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/meson/meson_encoder_dsi.c
> new file mode 100644
> index 000000000000..12a586316183
> --- /dev/null
> +++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c
> @@ -0,0 +1,160 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (C) 2016 BayLibre, SAS
> + * Author: Neil Armstrong <narmstrong@baylibre.com>
> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_graph.h>
> +
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_simple_kms_helper.h>
> +#include <drm/drm_bridge.h>
> +#include <drm/drm_bridge_connector.h>
> +#include <drm/drm_device.h>
> +#include <drm/drm_probe_helper.h>
> +
> +#include "meson_drv.h"
> +#include "meson_encoder_dsi.h"
> +#include "meson_registers.h"
> +#include "meson_venc.h"
> +#include "meson_vclk.h"
> +
> +struct meson_encoder_dsi {
> + struct drm_encoder encoder;
> + struct drm_bridge bridge;
> + struct drm_bridge *next_bridge;
> + struct meson_drm *priv;
> +};
> +
> +#define bridge_to_meson_encoder_dsi(x) \
> + container_of(x, struct meson_encoder_dsi, bridge)
> +
> +static int meson_encoder_dsi_attach(struct drm_bridge *bridge,
> + enum drm_bridge_attach_flags flags)
> +{
> + struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
> +
> + return drm_bridge_attach(bridge->encoder, encoder_dsi->next_bridge,
> + &encoder_dsi->bridge, flags);
> +}
> +
> +static void meson_encoder_dsi_mode_set(struct drm_bridge *bridge,
> + const struct drm_display_mode *mode,
> + const struct drm_display_mode *adjusted_mode)
> +{
> + struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
> + struct meson_drm *priv = encoder_dsi->priv;
> +
> + meson_vclk_setup(priv, MESON_VCLK_TARGET_DSI, mode->clock, 0, 0, 0, false);
> +
> + meson_venc_mipi_dsi_mode_set(priv, mode);
> + meson_encl_load_gamma(priv);
> +
> + writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
> +
> + writel_bits_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN, ENCL_VIDEO_MODE_ADV_VFIFO_EN,
> + priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
> + writel_relaxed(0, priv->io_base + _REG(ENCL_TST_EN));
> +}
> +
> +static void meson_encoder_dsi_atomic_enable(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state)
> +{
> + struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);
> + struct meson_drm *priv = encoder_dsi->priv;
> +
> + writel_bits_relaxed(BIT(0), 0, priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
> +
> + writel_relaxed(1, priv->io_base + _REG(ENCL_VIDEO_EN));
> +}
> +
> +static void meson_encoder_dsi_atomic_disable(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state)
> +{
> + struct meson_encoder_dsi *meson_encoder_dsi =
> + bridge_to_meson_encoder_dsi(bridge);
> + struct meson_drm *priv = meson_encoder_dsi->priv;
> +
> + writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
> +
> + writel_bits_relaxed(BIT(0), BIT(0), priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
> +}
> +
> +static const struct drm_bridge_funcs meson_encoder_dsi_bridge_funcs = {
> + .attach = meson_encoder_dsi_attach,
> + /*
> + * TOFIX: remove when dw-mipi-dsi moves out of mode_set
> + * We should get rid of mode_set, but until dw-mipi-dsi uses it
> + * we need to setup the pixel clock before the following
> + * bridge tries to setup the HW.
> + */
> + .mode_set = meson_encoder_dsi_mode_set,
> + .atomic_enable = meson_encoder_dsi_atomic_enable,
> + .atomic_disable = meson_encoder_dsi_atomic_disable,
> + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
> + .atomic_reset = drm_atomic_helper_bridge_reset,
> +};
> +
> +int meson_encoder_dsi_init(struct meson_drm *priv)
> +{
> + struct meson_encoder_dsi *meson_encoder_dsi;
> + struct device_node *remote;
> + int ret;
> +
> + meson_encoder_dsi = devm_kzalloc(priv->dev, sizeof(*meson_encoder_dsi), GFP_KERNEL);
> + if (!meson_encoder_dsi)
> + return -ENOMEM;
> +
> + /* DSI Transceiver Bridge */
> + remote = of_graph_get_remote_node(priv->dev->of_node, 2, 0);
> + if (!remote) {
> + dev_err(priv->dev, "DSI transceiver device is disabled");
> + return 0;
> + }
> +
> + meson_encoder_dsi->next_bridge = of_drm_find_bridge(remote);
> + if (!meson_encoder_dsi->next_bridge) {
> + dev_dbg(priv->dev, "Failed to find DSI transceiver bridge: %d\n", ret);
> + return -EPROBE_DEFER;
> + }
> +
> + /* DSI Encoder Bridge */
> + meson_encoder_dsi->bridge.funcs = &meson_encoder_dsi_bridge_funcs;
> + meson_encoder_dsi->bridge.of_node = priv->dev->of_node;
> + meson_encoder_dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
> +
> + drm_bridge_add(&meson_encoder_dsi->bridge);
> +
> + meson_encoder_dsi->priv = priv;
> +
> + /* Encoder */
> + ret = drm_simple_encoder_init(priv->drm, &meson_encoder_dsi->encoder,
> + DRM_MODE_ENCODER_DSI);
> + if (ret) {
> + dev_err(priv->dev, "Failed to init DSI encoder: %d\n", ret);
> + return ret;
> + }
> +
> + meson_encoder_dsi->encoder.possible_crtcs = BIT(0);
> +
> + /* Attach DSI Encoder Bridge to Encoder */
> + ret = drm_bridge_attach(&meson_encoder_dsi->encoder, &meson_encoder_dsi->bridge, NULL, 0);
> + if (ret) {
> + dev_err(priv->dev, "Failed to attach bridge: %d\n", ret);
> + return ret;
> + }
> +
> + /*
> + * We should have now in place:
> + * encoder->[dsi encoder bridge]->[dw-mipi-dsi bridge]->[panel bridge]->[panel]
> + */
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver
2022-01-20 8:33 ` [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver Neil Armstrong
@ 2022-01-20 14:24 ` Jagan Teki
2022-01-20 16:30 ` Neil Armstrong
2022-01-20 18:33 ` Jagan Teki
1 sibling, 1 reply; 13+ messages in thread
From: Jagan Teki @ 2022-01-20 14:24 UTC (permalink / raw)
To: Neil Armstrong
Cc: dri-devel, martin.blumenstingl, linux-amlogic, linux-kernel,
linux-arm-kernel
On Thu, Jan 20, 2022 at 2:04 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
> with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
> Glue on other Amlogic SoCs.
>
> This adds support for the Glue managing the transceiver, mimicing the init flow provided
> by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
> Analog PHY in the proper way.
>
> An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
> DW-MIPI-DSI transceiver.
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
> drivers/gpu/drm/meson/Kconfig | 7 +
> drivers/gpu/drm/meson/Makefile | 1 +
> drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 357 ++++++++++++++++++++++
> drivers/gpu/drm/meson/meson_dw_mipi_dsi.h | 160 ++++++++++
> 4 files changed, 525 insertions(+)
> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
>
> diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig
> index 6c70fc3214af..71a1364b51e1 100644
> --- a/drivers/gpu/drm/meson/Kconfig
> +++ b/drivers/gpu/drm/meson/Kconfig
> @@ -17,3 +17,10 @@ config DRM_MESON_DW_HDMI
> default y if DRM_MESON
> select DRM_DW_HDMI
> imply DRM_DW_HDMI_I2S_AUDIO
> +
> +config DRM_MESON_DW_MIPI_DSI
> + tristate "MIPI DSI Synopsys Controller support for Amlogic Meson Display"
> + depends on DRM_MESON
> + default y if DRM_MESON
> + select DRM_DW_MIPI_DSI
> + select GENERIC_PHY_MIPI_DPHY
> diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
> index 833e18c20603..43071bdbd4b9 100644
> --- a/drivers/gpu/drm/meson/Makefile
> +++ b/drivers/gpu/drm/meson/Makefile
> @@ -6,3 +6,4 @@ meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
>
> obj-$(CONFIG_DRM_MESON) += meson-drm.o
> obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
> +obj-$(CONFIG_DRM_MESON_DW_MIPI_DSI) += meson_dw_mipi_dsi.o
Can the naming convention prefix with dw-mipi-dsi like other glue
drivers follow?
Jagan.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output
2022-01-20 8:33 ` [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output Neil Armstrong
@ 2022-01-20 16:26 ` Neil Armstrong
0 siblings, 0 replies; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 16:26 UTC (permalink / raw)
To: dri-devel, martin.blumenstingl
Cc: linux-amlogic, linux-arm-kernel, linux-kernel
On 20/01/2022 09:33, Neil Armstrong wrote:
> This adds supports for the ENCL encoder connected to a MIPI-DSI transceiver on the
> Amlogic AXG, G12A, G12B & SM1 SoCs.
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
> drivers/gpu/drm/meson/meson_registers.h | 15 ++
> drivers/gpu/drm/meson/meson_venc.c | 211 +++++++++++++++++++++++-
> drivers/gpu/drm/meson/meson_venc.h | 6 +
> drivers/gpu/drm/meson/meson_vpp.h | 2 +
> 4 files changed, 232 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h
> index 0f3cafab8860..a422a8df1641 100644
> --- a/drivers/gpu/drm/meson/meson_registers.h
> +++ b/drivers/gpu/drm/meson/meson_registers.h
> @@ -1300,13 +1300,28 @@
> #define RDMA_STATUS2 0x1116
> #define RDMA_STATUS3 0x1117
> #define L_GAMMA_CNTL_PORT 0x1400
> +#define L_GAMMA_CNTL_PORT_VCOM_POL BIT(7) /* RW */
> +#define L_GAMMA_CNTL_PORT_RVS_OUT BIT(6) /* RW */
> +#define L_GAMMA_CNTL_PORT_ADR_RDY BIT(5) /* Read Only */
> +#define L_GAMMA_CNTL_PORT_WR_RDY BIT(4) /* Read Only */
> +#define L_GAMMA_CNTL_PORT_RD_RDY BIT(3) /* Read Only */
> +#define L_GAMMA_CNTL_PORT_TR BIT(2) /* RW */
> +#define L_GAMMA_CNTL_PORT_SET BIT(1) /* RW */
> +#define L_GAMMA_CNTL_PORT_EN BIT(0) /* RW */
> #define L_GAMMA_DATA_PORT 0x1401
> #define L_GAMMA_ADDR_PORT 0x1402
> +#define L_GAMMA_ADDR_PORT_RD BIT(12)
> +#define L_GAMMA_ADDR_PORT_AUTO_INC BIT(11)
> +#define L_GAMMA_ADDR_PORT_SEL_R BIT(10)
> +#define L_GAMMA_ADDR_PORT_SEL_G BIT(9)
> +#define L_GAMMA_ADDR_PORT_SEL_B BIT(8)
> +#define L_GAMMA_ADDR_PORT_ADDR GENMASK(7, 0)
> #define L_GAMMA_VCOM_HSWITCH_ADDR 0x1403
> #define L_RGB_BASE_ADDR 0x1405
> #define L_RGB_COEFF_ADDR 0x1406
> #define L_POL_CNTL_ADDR 0x1407
> #define L_DITH_CNTL_ADDR 0x1408
> +#define L_DITH_CNTL_DITH10_EN BIT(10)
> #define L_GAMMA_PROBE_CTRL 0x1409
> #define L_GAMMA_PROBE_COLOR_L 0x140a
> #define L_GAMMA_PROBE_COLOR_H 0x140b
OK Somehow the following disappeared from the patchset...
#define VENC_INTCTRL 0x1b6e
#define VENC_INTCTRL_ENCI_LNRST_INT_EN BIT(1)
-#define VENC_INTCTRL_ENCP_LNRST_INT_EN BIT(9)
#define VENC_INTFLAG 0x1b6f
#define ENCL_VIDEO_MODE 0x1ca7
-#define ENCL_PX_LN_CNT_SHADOW_EN BIT(15)
#define ENCL_VIDEO_MODE_ADV 0x1ca8
-#define ENCL_VIDEO_MODE_ADV_VFIFO_EN BIT(3)
-#define ENCL_VIDEO_MODE_ADV_GAIN_HDTV BIT(4)
-#define ENCL_SEL_GAMMA_RGB_IN BIT(10)
#define ENCL_DBG_PX_RST 0x1ca9
#define ENCL_VIDEO_FILT_CTRL 0x1cc2
-#define ENCL_VIDEO_FILT_CTRL_BYPASS_FILTER BIT(12)
#define ENCL_VIDEO_OFLD_VPEQ_OFST 0x1cc3
#define ENCL_VIDEO_RGBIN_CTRL 0x1cc7
-#define ENCL_VIDEO_RGBIN_RGB BIT(0)
-#define ENCL_VIDEO_RGBIN_ZBLK BIT(1)
#define ENCL_MAX_LINE_SWITCH_POINT 0x1cc8
#define L_TCON_MISC_SEL_ADDR 0x1441
-#define L_TCON_MISC_SEL_STV1 BIT(4)
-#define L_TCON_MISC_SEL_STV2 BIT(5)
#define L_DUAL_PORT_CNTL_ADDR 0x1442
I'll resend with those
> diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c
> index 3c55ed003359..eb2ac0549d46 100644
> --- a/drivers/gpu/drm/meson/meson_venc.c
> +++ b/drivers/gpu/drm/meson/meson_venc.c
> @@ -6,6 +6,7 @@
> */
>
> #include <linux/export.h>
> +#include <linux/iopoll.h>
>
> #include <drm/drm_modes.h>
>
> @@ -1557,6 +1558,205 @@ void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic,
> }
> EXPORT_SYMBOL_GPL(meson_venc_hdmi_mode_set);
>
> +static unsigned short meson_encl_gamma_table[256] = {
> + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60,
> + 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124,
> + 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172, 176, 180, 184, 188,
> + 192, 196, 200, 204, 208, 212, 216, 220, 224, 228, 232, 236, 240, 244, 248, 252,
> + 256, 260, 264, 268, 272, 276, 280, 284, 288, 292, 296, 300, 304, 308, 312, 316,
> + 320, 324, 328, 332, 336, 340, 344, 348, 352, 356, 360, 364, 368, 372, 376, 380,
> + 384, 388, 392, 396, 400, 404, 408, 412, 416, 420, 424, 428, 432, 436, 440, 444,
> + 448, 452, 456, 460, 464, 468, 472, 476, 480, 484, 488, 492, 496, 500, 504, 508,
> + 512, 516, 520, 524, 528, 532, 536, 540, 544, 548, 552, 556, 560, 564, 568, 572,
> + 576, 580, 584, 588, 592, 596, 600, 604, 608, 612, 616, 620, 624, 628, 632, 636,
> + 640, 644, 648, 652, 656, 660, 664, 668, 672, 676, 680, 684, 688, 692, 696, 700,
> + 704, 708, 712, 716, 720, 724, 728, 732, 736, 740, 744, 748, 752, 756, 760, 764,
> + 768, 772, 776, 780, 784, 788, 792, 796, 800, 804, 808, 812, 816, 820, 824, 828,
> + 832, 836, 840, 844, 848, 852, 856, 860, 864, 868, 872, 876, 880, 884, 888, 892,
> + 896, 900, 904, 908, 912, 916, 920, 924, 928, 932, 936, 940, 944, 948, 952, 956,
> + 960, 964, 968, 972, 976, 980, 984, 988, 992, 996, 1000, 1004, 1008, 1012, 1016, 1020,
> +};
> +
> +static void meson_encl_set_gamma_table(struct meson_drm *priv, u16 *data,
> + u32 rgb_mask)
> +{
> + int i, ret;
> + u32 reg;
> +
> + writel_bits_relaxed(L_GAMMA_CNTL_PORT_EN, 0,
> + priv->io_base + _REG(L_GAMMA_CNTL_PORT));
> +
> + ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
> + reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
> + if (ret)
> + pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
> +
> + writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
> + FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0),
> + priv->io_base + _REG(L_GAMMA_ADDR_PORT));
> +
> + for (i = 0; i < 256; i++) {
> + ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
> + reg, reg & L_GAMMA_CNTL_PORT_WR_RDY,
> + 10, 10000);
> + if (ret)
> + pr_warn_once("%s: GAMMA WR_RDY timeout\n", __func__);
> +
> + writel_relaxed(data[i], priv->io_base + _REG(L_GAMMA_DATA_PORT));
> + }
> +
> + ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
> + reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
> + if (ret)
> + pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
> +
> + writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
> + FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0x23),
> + priv->io_base + _REG(L_GAMMA_ADDR_PORT));
> +}
> +
> +void meson_encl_load_gamma(struct meson_drm *priv)
> +{
> + meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_R);
> + meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_G);
> + meson_encl_set_gamma_table(priv, meson_encl_gamma_table, L_GAMMA_ADDR_PORT_SEL_B);
> +
> + writel_bits_relaxed(L_GAMMA_CNTL_PORT_EN, L_GAMMA_CNTL_PORT_EN,
> + priv->io_base + _REG(L_GAMMA_CNTL_PORT));
> +}
> +
> +void meson_venc_mipi_dsi_mode_set(struct meson_drm *priv,
> + const struct drm_display_mode *mode)
> +{
> + unsigned int max_pxcnt;
> + unsigned int max_lncnt;
> + unsigned int havon_begin;
> + unsigned int havon_end;
> + unsigned int vavon_bline;
> + unsigned int vavon_eline;
> + unsigned int hso_begin;
> + unsigned int hso_end;
> + unsigned int vso_begin;
> + unsigned int vso_end;
> + unsigned int vso_bline;
> + unsigned int vso_eline;
> +
> + max_pxcnt = mode->htotal - 1;
> + max_lncnt = mode->vtotal - 1;
> + havon_begin = mode->htotal - mode->hsync_start;
> + havon_end = havon_begin + mode->hdisplay - 1;
> + vavon_bline = mode->vtotal - mode->vsync_start;
> + vavon_eline = vavon_bline + mode->vdisplay - 1;
> + hso_begin = 0;
> + hso_end = mode->hsync_end - mode->hsync_start;
> + vso_begin = 0;
> + vso_end = 0;
> + vso_bline = 0;
> + vso_eline = mode->vsync_end - mode->vsync_start;
> +
> + meson_vpp_setup_mux(priv, MESON_VIU_VPP_MUX_ENCL);
> +
> + writel_relaxed(0, priv->io_base + _REG(ENCL_VIDEO_EN));
> +
> + writel_relaxed(ENCL_PX_LN_CNT_SHADOW_EN, priv->io_base + _REG(ENCL_VIDEO_MODE));
> + writel_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN |
> + ENCL_VIDEO_MODE_ADV_GAIN_HDTV |
> + ENCL_SEL_GAMMA_RGB_IN, priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
> +
> + writel_relaxed(ENCL_VIDEO_FILT_CTRL_BYPASS_FILTER,
> + priv->io_base + _REG(ENCL_VIDEO_FILT_CTRL));
> + writel_relaxed(max_pxcnt, priv->io_base + _REG(ENCL_VIDEO_MAX_PXCNT));
> + writel_relaxed(max_lncnt, priv->io_base + _REG(ENCL_VIDEO_MAX_LNCNT));
> + writel_relaxed(havon_begin, priv->io_base + _REG(ENCL_VIDEO_HAVON_BEGIN));
> + writel_relaxed(havon_end, priv->io_base + _REG(ENCL_VIDEO_HAVON_END));
> + writel_relaxed(vavon_bline, priv->io_base + _REG(ENCL_VIDEO_VAVON_BLINE));
> + writel_relaxed(vavon_eline, priv->io_base + _REG(ENCL_VIDEO_VAVON_ELINE));
> +
> + writel_relaxed(hso_begin, priv->io_base + _REG(ENCL_VIDEO_HSO_BEGIN));
> + writel_relaxed(hso_end, priv->io_base + _REG(ENCL_VIDEO_HSO_END));
> + writel_relaxed(vso_begin, priv->io_base + _REG(ENCL_VIDEO_VSO_BEGIN));
> + writel_relaxed(vso_end, priv->io_base + _REG(ENCL_VIDEO_VSO_END));
> + writel_relaxed(vso_bline, priv->io_base + _REG(ENCL_VIDEO_VSO_BLINE));
> + writel_relaxed(vso_eline, priv->io_base + _REG(ENCL_VIDEO_VSO_ELINE));
> + writel_relaxed(ENCL_VIDEO_RGBIN_RGB | ENCL_VIDEO_RGBIN_ZBLK,
> + priv->io_base + _REG(ENCL_VIDEO_RGBIN_CTRL));
> +
> + /* default black pattern */
> + writel_relaxed(0, priv->io_base + _REG(ENCL_TST_MDSEL));
> + writel_relaxed(0, priv->io_base + _REG(ENCL_TST_Y));
> + writel_relaxed(0, priv->io_base + _REG(ENCL_TST_CB));
> + writel_relaxed(0, priv->io_base + _REG(ENCL_TST_CR));
> + writel_relaxed(1, priv->io_base + _REG(ENCL_TST_EN));
> + writel_bits_relaxed(ENCL_VIDEO_MODE_ADV_VFIFO_EN, 0,
> + priv->io_base + _REG(ENCL_VIDEO_MODE_ADV));
> +
> + writel_relaxed(1, priv->io_base + _REG(ENCL_VIDEO_EN));
> +
> + writel_relaxed(0, priv->io_base + _REG(L_RGB_BASE_ADDR));
> + writel_relaxed(0x400, priv->io_base + _REG(L_RGB_COEFF_ADDR)); /* Magic value */
> +
> + writel_relaxed(L_DITH_CNTL_DITH10_EN, priv->io_base + _REG(L_DITH_CNTL_ADDR));
> +
> + /* DE signal for TTL */
> + writel_relaxed(havon_begin, priv->io_base + _REG(L_OEH_HS_ADDR));
> + writel_relaxed(havon_end + 1, priv->io_base + _REG(L_OEH_HE_ADDR));
> + writel_relaxed(vavon_bline, priv->io_base + _REG(L_OEH_VS_ADDR));
> + writel_relaxed(vavon_eline, priv->io_base + _REG(L_OEH_VE_ADDR));
> +
> + /* DE signal for TTL */
> + writel_relaxed(havon_begin, priv->io_base + _REG(L_OEV1_HS_ADDR));
> + writel_relaxed(havon_end + 1, priv->io_base + _REG(L_OEV1_HE_ADDR));
> + writel_relaxed(vavon_bline, priv->io_base + _REG(L_OEV1_VS_ADDR));
> + writel_relaxed(vavon_eline, priv->io_base + _REG(L_OEV1_VE_ADDR));
> +
> + /* Hsync signal for TTL */
> + if (mode->flags & DRM_MODE_FLAG_PHSYNC) {
> + writel_relaxed(hso_end, priv->io_base + _REG(L_STH1_HS_ADDR));
> + writel_relaxed(hso_begin, priv->io_base + _REG(L_STH1_HE_ADDR));
> + } else {
> + writel_relaxed(hso_begin, priv->io_base + _REG(L_STH1_HS_ADDR));
> + writel_relaxed(hso_end, priv->io_base + _REG(L_STH1_HE_ADDR));
> + }
> + writel_relaxed(0, priv->io_base + _REG(L_STH1_VS_ADDR));
> + writel_relaxed(max_lncnt, priv->io_base + _REG(L_STH1_VE_ADDR));
> +
> + /* Vsync signal for TTL */
> + writel_relaxed(vso_begin, priv->io_base + _REG(L_STV1_HS_ADDR));
> + writel_relaxed(vso_end, priv->io_base + _REG(L_STV1_HE_ADDR));
> + if (mode->flags & DRM_MODE_FLAG_PVSYNC) {
> + writel_relaxed(vso_eline, priv->io_base + _REG(L_STV1_VS_ADDR));
> + writel_relaxed(vso_bline, priv->io_base + _REG(L_STV1_VE_ADDR));
> + } else {
> + writel_relaxed(vso_bline, priv->io_base + _REG(L_STV1_VS_ADDR));
> + writel_relaxed(vso_eline, priv->io_base + _REG(L_STV1_VE_ADDR));
> + }
> +
> + /* DE signal */
> + writel_relaxed(havon_begin, priv->io_base + _REG(L_DE_HS_ADDR));
> + writel_relaxed(havon_end + 1, priv->io_base + _REG(L_DE_HE_ADDR));
> + writel_relaxed(vavon_bline, priv->io_base + _REG(L_DE_VS_ADDR));
> + writel_relaxed(vavon_eline, priv->io_base + _REG(L_DE_VE_ADDR));
> +
> + /* Hsync signal */
> + writel_relaxed(hso_begin, priv->io_base + _REG(L_HSYNC_HS_ADDR));
> + writel_relaxed(hso_end, priv->io_base + _REG(L_HSYNC_HE_ADDR));
> + writel_relaxed(0, priv->io_base + _REG(L_HSYNC_VS_ADDR));
> + writel_relaxed(max_lncnt, priv->io_base + _REG(L_HSYNC_VE_ADDR));
> +
> + /* Vsync signal */
> + writel_relaxed(vso_begin, priv->io_base + _REG(L_VSYNC_HS_ADDR));
> + writel_relaxed(vso_end, priv->io_base + _REG(L_VSYNC_HE_ADDR));
> + writel_relaxed(vso_bline, priv->io_base + _REG(L_VSYNC_VS_ADDR));
> + writel_relaxed(vso_eline, priv->io_base + _REG(L_VSYNC_VE_ADDR));
> +
> + writel_relaxed(0, priv->io_base + _REG(L_INV_CNT_ADDR));
> + writel_relaxed(L_TCON_MISC_SEL_STV1 | L_TCON_MISC_SEL_STV2,
> + priv->io_base + _REG(L_TCON_MISC_SEL_ADDR));
> +
> + priv->venc.current_mode = MESON_VENC_MODE_MIPI_DSI;
> +}
> +EXPORT_SYMBOL_GPL(meson_venc_mipi_dsi_mode_set);
> +
> void meson_venci_cvbs_mode_set(struct meson_drm *priv,
> struct meson_cvbs_enci_mode *mode)
> {
> @@ -1747,8 +1947,15 @@ unsigned int meson_venci_get_field(struct meson_drm *priv)
>
> void meson_venc_enable_vsync(struct meson_drm *priv)
> {
> - writel_relaxed(VENC_INTCTRL_ENCI_LNRST_INT_EN,
> - priv->io_base + _REG(VENC_INTCTRL));
> + switch (priv->venc.current_mode) {
> + case MESON_VENC_MODE_MIPI_DSI:
> + writel_relaxed(VENC_INTCTRL_ENCP_LNRST_INT_EN,
> + priv->io_base + _REG(VENC_INTCTRL));
> + break;
> + default:
> + writel_relaxed(VENC_INTCTRL_ENCI_LNRST_INT_EN,
> + priv->io_base + _REG(VENC_INTCTRL));
> + }
> regmap_update_bits(priv->hhi, HHI_GCLK_MPEG2, BIT(25), BIT(25));
> }
>
> diff --git a/drivers/gpu/drm/meson/meson_venc.h b/drivers/gpu/drm/meson/meson_venc.h
> index 9138255ffc9e..0f59adb1c6db 100644
> --- a/drivers/gpu/drm/meson/meson_venc.h
> +++ b/drivers/gpu/drm/meson/meson_venc.h
> @@ -21,6 +21,7 @@ enum {
> MESON_VENC_MODE_CVBS_PAL,
> MESON_VENC_MODE_CVBS_NTSC,
> MESON_VENC_MODE_HDMI,
> + MESON_VENC_MODE_MIPI_DSI,
> };
>
> struct meson_cvbs_enci_mode {
> @@ -47,6 +48,9 @@ struct meson_cvbs_enci_mode {
> unsigned int analog_sync_adj;
> };
>
> +/* LCD Encoder gamma setup */
> +void meson_encl_load_gamma(struct meson_drm *priv);
> +
> /* HDMI Clock parameters */
> enum drm_mode_status
> meson_venc_hdmi_supported_mode(const struct drm_display_mode *mode);
> @@ -63,6 +67,8 @@ void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic,
> unsigned int ycrcb_map,
> bool yuv420_mode,
> const struct drm_display_mode *mode);
> +void meson_venc_mipi_dsi_mode_set(struct meson_drm *priv,
> + const struct drm_display_mode *mode);
> unsigned int meson_venci_get_field(struct meson_drm *priv);
>
> void meson_venc_enable_vsync(struct meson_drm *priv);
> diff --git a/drivers/gpu/drm/meson/meson_vpp.h b/drivers/gpu/drm/meson/meson_vpp.h
> index afc9553ed8d3..b790042a1650 100644
> --- a/drivers/gpu/drm/meson/meson_vpp.h
> +++ b/drivers/gpu/drm/meson/meson_vpp.h
> @@ -12,6 +12,8 @@
> struct drm_rect;
> struct meson_drm;
>
> +/* Mux VIU/VPP to ENCL */
> +#define MESON_VIU_VPP_MUX_ENCL 0x0
> /* Mux VIU/VPP to ENCI */
> #define MESON_VIU_VPP_MUX_ENCI 0x5
> /* Mux VIU/VPP to ENCP */
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver
2022-01-20 14:24 ` Jagan Teki
@ 2022-01-20 16:30 ` Neil Armstrong
2022-01-20 18:32 ` Jagan Teki
0 siblings, 1 reply; 13+ messages in thread
From: Neil Armstrong @ 2022-01-20 16:30 UTC (permalink / raw)
To: Jagan Teki
Cc: dri-devel, martin.blumenstingl, linux-amlogic, linux-kernel,
linux-arm-kernel
Hi,
On 20/01/2022 15:24, Jagan Teki wrote:
> On Thu, Jan 20, 2022 at 2:04 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>>
>> The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
>> with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
>> Glue on other Amlogic SoCs.
>>
>> This adds support for the Glue managing the transceiver, mimicing the init flow provided
>> by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
>> Analog PHY in the proper way.
>>
>> An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
>> DW-MIPI-DSI transceiver.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
>> ---
>> drivers/gpu/drm/meson/Kconfig | 7 +
>> drivers/gpu/drm/meson/Makefile | 1 +
>> drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 357 ++++++++++++++++++++++
>> drivers/gpu/drm/meson/meson_dw_mipi_dsi.h | 160 ++++++++++
>> 4 files changed, 525 insertions(+)
>> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
>> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
>>
>> diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig
>> index 6c70fc3214af..71a1364b51e1 100644
>> --- a/drivers/gpu/drm/meson/Kconfig
>> +++ b/drivers/gpu/drm/meson/Kconfig
>> @@ -17,3 +17,10 @@ config DRM_MESON_DW_HDMI
>> default y if DRM_MESON
>> select DRM_DW_HDMI
>> imply DRM_DW_HDMI_I2S_AUDIO
>> +
>> +config DRM_MESON_DW_MIPI_DSI
>> + tristate "MIPI DSI Synopsys Controller support for Amlogic Meson Display"
>> + depends on DRM_MESON
>> + default y if DRM_MESON
>> + select DRM_DW_MIPI_DSI
>> + select GENERIC_PHY_MIPI_DPHY
>> diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
>> index 833e18c20603..43071bdbd4b9 100644
>> --- a/drivers/gpu/drm/meson/Makefile
>> +++ b/drivers/gpu/drm/meson/Makefile
>> @@ -6,3 +6,4 @@ meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
>>
>> obj-$(CONFIG_DRM_MESON) += meson-drm.o
>> obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
>> +obj-$(CONFIG_DRM_MESON_DW_MIPI_DSI) += meson_dw_mipi_dsi.o
>
> Can the naming convention prefix with dw-mipi-dsi like other glue
> drivers follow?
Seems only rockchip names their glue like that:
$ find drivers/gpu/drm/ -name "*dw*mipi*dsi*.c"
drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
If you look at dw-hdmi it's even worse:
$ find drivers/gpu/drm/ -name "*dw*hdmi*.c" | grep -v mod
drivers/gpu/drm/meson/meson_dw_hdmi.c
drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
drivers/gpu/drm/imx/dw_hdmi-imx.c
drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
Neil
>
> Jagan.
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver
2022-01-20 16:30 ` Neil Armstrong
@ 2022-01-20 18:32 ` Jagan Teki
0 siblings, 0 replies; 13+ messages in thread
From: Jagan Teki @ 2022-01-20 18:32 UTC (permalink / raw)
To: Neil Armstrong
Cc: dri-devel, martin.blumenstingl, linux-amlogic, linux-kernel,
linux-arm-kernel
On Thu, Jan 20, 2022 at 10:00 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> Hi,
>
> On 20/01/2022 15:24, Jagan Teki wrote:
> > On Thu, Jan 20, 2022 at 2:04 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
> >>
> >> The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
> >> with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
> >> Glue on other Amlogic SoCs.
> >>
> >> This adds support for the Glue managing the transceiver, mimicing the init flow provided
> >> by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
> >> Analog PHY in the proper way.
> >>
> >> An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
> >> DW-MIPI-DSI transceiver.
> >>
> >> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> >> ---
> >> drivers/gpu/drm/meson/Kconfig | 7 +
> >> drivers/gpu/drm/meson/Makefile | 1 +
> >> drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 357 ++++++++++++++++++++++
> >> drivers/gpu/drm/meson/meson_dw_mipi_dsi.h | 160 ++++++++++
> >> 4 files changed, 525 insertions(+)
> >> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
> >> create mode 100644 drivers/gpu/drm/meson/meson_dw_mipi_dsi.h
> >>
> >> diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig
> >> index 6c70fc3214af..71a1364b51e1 100644
> >> --- a/drivers/gpu/drm/meson/Kconfig
> >> +++ b/drivers/gpu/drm/meson/Kconfig
> >> @@ -17,3 +17,10 @@ config DRM_MESON_DW_HDMI
> >> default y if DRM_MESON
> >> select DRM_DW_HDMI
> >> imply DRM_DW_HDMI_I2S_AUDIO
> >> +
> >> +config DRM_MESON_DW_MIPI_DSI
> >> + tristate "MIPI DSI Synopsys Controller support for Amlogic Meson Display"
> >> + depends on DRM_MESON
> >> + default y if DRM_MESON
> >> + select DRM_DW_MIPI_DSI
> >> + select GENERIC_PHY_MIPI_DPHY
> >> diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile
> >> index 833e18c20603..43071bdbd4b9 100644
> >> --- a/drivers/gpu/drm/meson/Makefile
> >> +++ b/drivers/gpu/drm/meson/Makefile
> >> @@ -6,3 +6,4 @@ meson-drm-y += meson_encoder_hdmi.o meson_encoder_dsi.o
> >>
> >> obj-$(CONFIG_DRM_MESON) += meson-drm.o
> >> obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o
> >> +obj-$(CONFIG_DRM_MESON_DW_MIPI_DSI) += meson_dw_mipi_dsi.o
> >
> > Can the naming convention prefix with dw-mipi-dsi like other glue
> > drivers follow?
>
> Seems only rockchip names their glue like that:
>
> $ find drivers/gpu/drm/ -name "*dw*mipi*dsi*.c"
> drivers/gpu/drm/meson/meson_dw_mipi_dsi.c
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
>
> If you look at dw-hdmi it's even worse:
>
> $ find drivers/gpu/drm/ -name "*dw*hdmi*.c" | grep -v mod
> drivers/gpu/drm/meson/meson_dw_hdmi.c
> drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
> drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
> drivers/gpu/drm/imx/dw_hdmi-imx.c
> drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
Look like there is no standard naming, thanks.
Jagan.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver
2022-01-20 8:33 ` [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver Neil Armstrong
2022-01-20 14:24 ` Jagan Teki
@ 2022-01-20 18:33 ` Jagan Teki
1 sibling, 0 replies; 13+ messages in thread
From: Jagan Teki @ 2022-01-20 18:33 UTC (permalink / raw)
To: Neil Armstrong
Cc: dri-devel, martin.blumenstingl, linux-amlogic, linux-kernel,
linux-arm-kernel
On Thu, Jan 20, 2022 at 2:04 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a),
> with a custom glue managing the IP resets, clock and data input similar to the DW-HDMI
> Glue on other Amlogic SoCs.
>
> This adds support for the Glue managing the transceiver, mimicing the init flow provided
> by Amlogic to setup the ENCL encoder, the glue, the transceiver, the digital D-PHY and the
> Analog PHY in the proper way.
>
> An optional "MEAS" clock can be enabled to measure the delay between each vsync feeding the
> DW-MIPI-DSI transceiver.
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2022-01-20 18:33 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-20 8:33 [PATCH v2 0/6] drm/meson: add support for MIPI DSI Display Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 1/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 2/6] dt-bindings: display: meson-vpu: add third DPI output port Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 3/6] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output Neil Armstrong
2022-01-20 16:26 ` Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 4/6] drm/meson: vclk: add DSI clock config Neil Armstrong
2022-01-20 8:33 ` [PATCH v2 5/6] drm/meson: add DSI encoder Neil Armstrong
2022-01-20 14:22 ` Jagan Teki
2022-01-20 8:33 ` [PATCH v2 6/6] drm/meson: add support for MIPI-DSI transceiver Neil Armstrong
2022-01-20 14:24 ` Jagan Teki
2022-01-20 16:30 ` Neil Armstrong
2022-01-20 18:32 ` Jagan Teki
2022-01-20 18:33 ` Jagan Teki
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