target/linux/bcm27xx/patches-4.19/950-0746-drm-vc4-Added-calls-for-firmware-display-blank-unbla.patch

   1 From ebb8a4e93e242311d319098ea56e4ef4d92c4d19 Mon Sep 17 00:00:00 2001
   2 From: James Hughes <james.hughes@raspberrypi.org>
   3 Date: Wed, 16 Oct 2019 14:49:23 +0100
   4 Subject: [PATCH] drm:vc4 Added calls for firmware display
   5  blank/unblank
   6
   7 Requires new display power mailbox call to be present.
   8
   9 Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
  10 ---
  11  drivers/gpu/drm/vc4/vc4_firmware_kms.c     | 25 ++++++++++++++++++++++
  12  include/soc/bcm2835/raspberrypi-firmware.h |  2 +-
  13  2 files changed, 26 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  17 @@ -91,6 +91,12 @@ struct mailbox_blank_display {
  18         u32 blank;
  19  };
  20
  21 +struct mailbox_display_pwr {
  22 +       struct rpi_firmware_property_tag_header tag1;
  23 +       u32 display;
  24 +       u32 state;
  25 +};
  26 +
  27  struct mailbox_get_edid {
  28         struct rpi_firmware_property_tag_header tag1;
  29         u32 block;
  30 @@ -272,6 +278,7 @@ struct vc4_fkms_encoder {
  31         struct drm_encoder base;
  32         bool hdmi_monitor;
  33         bool rgb_range_selectable;
  34 +       int display_num;
  35  };
  36
  37  static inline struct vc4_fkms_encoder *
  38 @@ -1613,13 +1620,29 @@ static const struct drm_encoder_funcs vc
  39         .destroy = vc4_fkms_encoder_destroy,
  40  };
  41
  42 +static void vc4_fkms_display_power(struct drm_encoder *encoder, bool power)
  43 +{
  44 +       struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder);
  45 +       struct vc4_dev *vc4 = to_vc4_dev(encoder->dev);
  46 +
  47 +       struct mailbox_display_pwr pwr = {
  48 +               .tag1 = {RPI_FIRMWARE_SET_DISPLAY_POWER, 8, 0, },
  49 +               .display = vc4_encoder->display_num,
  50 +               .state = power ? 1 : 0,
  51 +       };
  52 +
  53 +       rpi_firmware_property_list(vc4->firmware, &pwr, sizeof(pwr));
  54 +}
  55 +
  56  static void vc4_fkms_encoder_enable(struct drm_encoder *encoder)
  57  {
  58 +       vc4_fkms_display_power(encoder, true);
  59         DRM_DEBUG_KMS("Encoder_enable\n");
  60  }
  61
  62  static void vc4_fkms_encoder_disable(struct drm_encoder *encoder)
  63  {
  64 +       vc4_fkms_display_power(encoder, false);
  65         DRM_DEBUG_KMS("Encoder_disable\n");
  66  }
  67
  68 @@ -1695,6 +1718,8 @@ static int vc4_fkms_create_screen(struct
  69         if (!vc4_encoder)
  70                 return -ENOMEM;
  71         vc4_crtc->encoder = &vc4_encoder->base;
  72 +
  73 +       vc4_encoder->display_num = display_ref;
  74         vc4_encoder->base.possible_crtcs |= drm_crtc_mask(crtc) ;
  75
  76         drm_encoder_init(drm, &vc4_encoder->base, &vc4_fkms_encoder_funcs,
  77 --- a/include/soc/bcm2835/raspberrypi-firmware.h
  78 +++ b/include/soc/bcm2835/raspberrypi-firmware.h
  79 @@ -155,7 +155,7 @@ enum rpi_firmware_property_tag {
  80         RPI_FIRMWARE_GET_DISPLAY_TIMING =                     0x00040017,
  81         RPI_FIRMWARE_SET_TIMING =                             0x00048017,
  82         RPI_FIRMWARE_GET_DISPLAY_CFG =                        0x00040018,
  83 -
  84 +       RPI_FIRMWARE_SET_DISPLAY_POWER =                      0x00048019,
  85         RPI_FIRMWARE_GET_COMMAND_LINE =                       0x00050001,
  86         RPI_FIRMWARE_GET_DMA_CHANNELS =                       0x00060001,
  87  };