On 05/08/2024 15:05, Thomas Zimmermann wrote:
Duplicate VGA output to VGA-BMC output and update all code for Matrox
server chips. The new output represents a VGA output that has a BMC
attached to it. No functional changes so far.

Thanks for this work.

Reviewed-by: Jocelyn Falempe <jfale...@redhat.com>


Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
  drivers/gpu/drm/mgag200/Makefile          |  1 +
  drivers/gpu/drm/mgag200/mgag200_drv.h     |  3 +
  drivers/gpu/drm/mgag200/mgag200_g200eh.c  |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200eh3.c |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200er.c  |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200ev.c  |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200ew3.c |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200se.c  |  2 +-
  drivers/gpu/drm/mgag200/mgag200_g200wb.c  |  2 +-
  drivers/gpu/drm/mgag200/mgag200_vga_bmc.c | 72 +++++++++++++++++++++++
  10 files changed, 83 insertions(+), 7 deletions(-)
  create mode 100644 drivers/gpu/drm/mgag200/mgag200_vga_bmc.c

diff --git a/drivers/gpu/drm/mgag200/Makefile b/drivers/gpu/drm/mgag200/Makefile
index d1b25f9f6586..5a02203fad12 100644
--- a/drivers/gpu/drm/mgag200/Makefile
+++ b/drivers/gpu/drm/mgag200/Makefile
@@ -12,6 +12,7 @@ mgag200-y := \
        mgag200_g200se.o \
        mgag200_g200wb.o \
        mgag200_mode.o \
+       mgag200_vga_bmc.o \
        mgag200_vga.o
obj-$(CONFIG_DRM_MGAG200) += mgag200.o
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h 
b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 8df3c84d2405..1301d3066a49 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -437,6 +437,9 @@ void mgag200_enable_display(struct mga_device *mdev);
  void mgag200_init_registers(struct mga_device *mdev);
  int mgag200_mode_config_init(struct mga_device *mdev, resource_size_t 
vram_available);
+/* mgag200_vga_bmc.c */
+int mgag200_vga_bmc_output_init(struct mga_device *mdev);
+
  /* mgag200_vga.c */
  int mgag200_vga_output_init(struct mga_device *mdev);
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh.c b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
index 72bd8e3421c2..1824c0e59c03 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
@@ -215,7 +215,7 @@ static int mgag200_g200eh_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
index 1bbb0745b84a..9cb2a165e460 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
@@ -119,7 +119,7 @@ static int mgag200_g200eh3_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200er.c b/drivers/gpu/drm/mgag200/mgag200_g200er.c
index e65d59173939..e0f7816ad87a 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200er.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200er.c
@@ -258,7 +258,7 @@ static int mgag200_g200er_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ev.c b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
index a4890b496050..a2c683f82127 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ev.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
@@ -259,7 +259,7 @@ static int mgag200_g200ev_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
index fbaa97c7e0da..7a2806be2d2e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
@@ -128,7 +128,7 @@ static int mgag200_g200ew3_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index fcb97e4253c4..b83f3f31ed0e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -390,7 +390,7 @@ static int mgag200_g200se_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200wb.c b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
index 33ef35c95acb..cb971ca5e306 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200wb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
@@ -262,7 +262,7 @@ static int mgag200_g200wb_pipeline_init(struct mga_device 
*mdev)
        drm_mode_crtc_set_gamma_size(crtc, MGAG200_LUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, MGAG200_LUT_SIZE);
- ret = mgag200_vga_output_init(mdev);
+       ret = mgag200_vga_bmc_output_init(mdev);
        if (ret)
                return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_vga_bmc.c b/drivers/gpu/drm/mgag200/mgag200_vga_bmc.c
new file mode 100644
index 000000000000..b6b90632b3c6
--- /dev/null
+++ b/drivers/gpu/drm/mgag200/mgag200_vga_bmc.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_probe_helper.h>
+
+#include "mgag200_ddc.h"
+#include "mgag200_drv.h"
+
+static const struct drm_encoder_funcs mgag200_dac_encoder_funcs = {
+       .destroy = drm_encoder_cleanup
+};
+
+static const struct drm_connector_helper_funcs 
mgag200_vga_connector_helper_funcs = {
+       .get_modes = drm_connector_helper_get_modes,
+       .detect_ctx = drm_connector_helper_detect_from_ddc
+};
+
+static const struct drm_connector_funcs mgag200_vga_connector_funcs = {
+       .reset                  = drm_atomic_helper_connector_reset,
+       .fill_modes             = drm_helper_probe_single_connector_modes,
+       .destroy                = drm_connector_cleanup,
+       .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+       .atomic_destroy_state   = drm_atomic_helper_connector_destroy_state
+};
+
+int mgag200_vga_bmc_output_init(struct mga_device *mdev)
+{
+       struct drm_device *dev = &mdev->base;
+       struct drm_crtc *crtc = &mdev->crtc;
+       struct drm_encoder *encoder;
+       struct drm_connector *connector;
+       struct i2c_adapter *ddc;
+       int ret;
+
+       encoder = &mdev->output.vga.encoder;
+       ret = drm_encoder_init(dev, encoder, &mgag200_dac_encoder_funcs,
+                              DRM_MODE_ENCODER_DAC, NULL);
+       if (ret) {
+               drm_err(dev, "drm_encoder_init() failed: %d\n", ret);
+               return ret;
+       }
+       encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+       ddc = mgag200_ddc_create(mdev);
+       if (IS_ERR(ddc)) {
+               ret = PTR_ERR(ddc);
+               drm_err(dev, "failed to add DDC bus: %d\n", ret);
+               return ret;
+       }
+
+       connector = &mdev->output.vga.connector;
+       ret = drm_connector_init_with_ddc(dev, connector,
+                                         &mgag200_vga_connector_funcs,
+                                         DRM_MODE_CONNECTOR_VGA, ddc);
+       if (ret) {
+               drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
+               return ret;
+       }
+       drm_connector_helper_add(connector, 
&mgag200_vga_connector_helper_funcs);
+
+       connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+                           DRM_CONNECTOR_POLL_DISCONNECT;
+
+       ret = drm_connector_attach_encoder(connector, encoder);
+       if (ret) {
+               drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", 
ret);
+               return ret;
+       }
+
+       return 0;
+}

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