git.openwrt.org Git - openwrt/staging/neocturne.git/blob

   1 From a68e8ffc3314612b0d00d491c8cdd61ae1d9af4e Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Tue, 25 Apr 2023 10:12:32 +0200
   4 Subject: [PATCH] drm/vc4: txp: Introduce structure to deal with revision
   5  differences
   6
   7 The BCM2712 will have several TXP with small differences. Let's add a
   8 structure tied to the compatible to deal with those differences.
   9
  10 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  11 ---
  12  drivers/gpu/drm/vc4/tests/vc4_mock.c |  4 ++--
  13  drivers/gpu/drm/vc4/vc4_drv.h        |  6 +++++-
  14  drivers/gpu/drm/vc4/vc4_txp.c        | 23 ++++++++++++++++-------
  15  3 files changed, 23 insertions(+), 10 deletions(-)
  16
  17 --- a/drivers/gpu/drm/vc4/tests/vc4_mock.c
  18 +++ b/drivers/gpu/drm/vc4/tests/vc4_mock.c
  19 @@ -51,7 +51,7 @@ struct vc4_mock_desc {
  20
  21  static const struct vc4_mock_desc vc4_mock =
  22         VC4_MOCK_DESC(
  23 -               VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
  24 +               VC4_MOCK_CRTC_DESC(&vc4_txp_data.base,
  25                                    VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
  26                                                         DRM_MODE_ENCODER_VIRTUAL,
  27                                                         DRM_MODE_CONNECTOR_WRITEBACK)),
  28 @@ -77,7 +77,7 @@ static const struct vc4_mock_desc vc4_mo
  29
  30  static const struct vc4_mock_desc vc5_mock =
  31         VC4_MOCK_DESC(
  32 -               VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
  33 +               VC4_MOCK_CRTC_DESC(&vc4_txp_data.base,
  34                                    VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
  35                                                         DRM_MODE_ENCODER_VIRTUAL,
  36                                                         DRM_MODE_CONNECTOR_WRITEBACK)),
  37 --- a/drivers/gpu/drm/vc4/vc4_drv.h
  38 +++ b/drivers/gpu/drm/vc4/vc4_drv.h
  39 @@ -561,7 +561,11 @@ struct vc4_crtc_data {
  40         int hvs_output;
  41  };
  42
  43 -extern const struct vc4_crtc_data vc4_txp_crtc_data;
  44 +struct vc4_txp_data {
  45 +       struct vc4_crtc_data    base;
  46 +};
  47 +
  48 +extern const struct vc4_txp_data vc4_txp_data;
  49
  50  struct vc4_pv_data {
  51         struct vc4_crtc_data    base;
  52 --- a/drivers/gpu/drm/vc4/vc4_txp.c
  53 +++ b/drivers/gpu/drm/vc4/vc4_txp.c
  54 @@ -159,6 +159,7 @@
  55
  56  struct vc4_txp {
  57         struct vc4_crtc base;
  58 +       const struct vc4_txp_data *data;
  59
  60         struct platform_device *pdev;
  61
  62 @@ -488,17 +489,20 @@ static irqreturn_t vc4_txp_interrupt(int
  63         return IRQ_HANDLED;
  64  }
  65
  66 -const struct vc4_crtc_data vc4_txp_crtc_data = {
  67 -       .name = "txp",
  68 -       .debugfs_name = "txp_regs",
  69 -       .hvs_available_channels = BIT(2),
  70 -       .hvs_output = 2,
  71 +const struct vc4_txp_data vc4_txp_data = {
  72 +       .base = {
  73 +               .name = "txp",
  74 +               .debugfs_name = "txp_regs",
  75 +               .hvs_available_channels = BIT(2),
  76 +               .hvs_output = 2,
  77 +       },
  78  };
  79
  80  static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
  81  {
  82         struct platform_device *pdev = to_platform_device(dev);
  83         struct drm_device *drm = dev_get_drvdata(master);
  84 +       const struct vc4_txp_data *txp_data;
  85         struct vc4_encoder *vc4_encoder;
  86         struct drm_encoder *encoder;
  87         struct vc4_crtc *vc4_crtc;
  88 @@ -513,6 +517,11 @@ static int vc4_txp_bind(struct device *d
  89         if (!txp)
  90                 return -ENOMEM;
  91
  92 +       txp_data = of_device_get_match_data(dev);
  93 +       if (!txp_data)
  94 +               return -ENODEV;
  95 +
  96 +       txp->data = txp_data;
  97         txp->pdev = pdev;
  98         txp->regs = vc4_ioremap_regs(pdev, 0);
  99         if (IS_ERR(txp->regs))
 100 @@ -523,7 +532,7 @@ static int vc4_txp_bind(struct device *d
 101         vc4_crtc->regset.regs = txp_regs;
 102         vc4_crtc->regset.nregs = ARRAY_SIZE(txp_regs);
 103
 104 -       ret = vc4_crtc_init(drm, pdev, vc4_crtc, &vc4_txp_crtc_data,
 105 +       ret = vc4_crtc_init(drm, pdev, vc4_crtc, &txp_data->base,
 106                             &vc4_txp_crtc_funcs, &vc4_txp_crtc_helper_funcs, true);
 107         if (ret)
 108                 return ret;
 109 @@ -584,7 +593,7 @@ static int vc4_txp_remove(struct platfor
 110  }
 111
 112  static const struct of_device_id vc4_txp_dt_match[] = {
 113 -       { .compatible = "brcm,bcm2835-txp" },
 114 +       { .compatible = "brcm,bcm2835-txp", .data = &vc4_txp_data },
 115         { /* sentinel */ },
 116  };
 117