1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright © 2018 Intel Corporation
4 */
5
6 #include <drm/drm_mipi_dsi.h>
7
8 #include "i915_drv.h"
9 #include "intel_dsi.h"
10 #include "intel_panel.h"
11
intel_dsi_bitrate(const struct intel_dsi * intel_dsi)12 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
13 {
14 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
15
16 if (WARN_ON(bpp < 0))
17 bpp = 16;
18
19 return intel_dsi->pclk * bpp / intel_dsi->lane_count;
20 }
21
intel_dsi_tlpx_ns(const struct intel_dsi * intel_dsi)22 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
23 {
24 switch (intel_dsi->escape_clk_div) {
25 default:
26 case 0:
27 return 50;
28 case 1:
29 return 100;
30 case 2:
31 return 200;
32 }
33 }
34
intel_dsi_get_modes(struct drm_connector * connector)35 int intel_dsi_get_modes(struct drm_connector *connector)
36 {
37 return intel_panel_get_modes(to_intel_connector(connector));
38 }
39
intel_dsi_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)40 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
41 struct drm_display_mode *mode)
42 {
43 struct drm_i915_private *dev_priv = to_i915(connector->dev);
44 struct intel_connector *intel_connector = to_intel_connector(connector);
45 const struct drm_display_mode *fixed_mode =
46 intel_panel_fixed_mode(intel_connector, mode);
47 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
48 enum drm_mode_status status;
49
50 drm_dbg_kms(&dev_priv->drm, "\n");
51
52 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
53 return MODE_NO_DBLESCAN;
54
55 status = intel_panel_mode_valid(intel_connector, mode);
56 if (status != MODE_OK)
57 return status;
58
59 if (fixed_mode->clock > max_dotclk)
60 return MODE_CLOCK_HIGH;
61
62 return intel_mode_valid_max_plane_size(dev_priv, mode, false);
63 }
64
intel_dsi_host_init(struct intel_dsi * intel_dsi,const struct mipi_dsi_host_ops * funcs,enum port port)65 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
66 const struct mipi_dsi_host_ops *funcs,
67 enum port port)
68 {
69 struct intel_dsi_host *host;
70 struct mipi_dsi_device *device;
71
72 host = kzalloc(sizeof(*host), GFP_KERNEL);
73 if (!host)
74 return NULL;
75
76 host->base.ops = funcs;
77 host->intel_dsi = intel_dsi;
78 host->port = port;
79
80 /*
81 * We should call mipi_dsi_host_register(&host->base) here, but we don't
82 * have a host->dev, and we don't have OF stuff either. So just use the
83 * dsi framework as a library and hope for the best. Create the dsi
84 * devices by ourselves here too. Need to be careful though, because we
85 * don't initialize any of the driver model devices here.
86 */
87 device = kzalloc(sizeof(*device), GFP_KERNEL);
88 if (!device) {
89 kfree(host);
90 return NULL;
91 }
92
93 device->host = &host->base;
94 host->device = device;
95
96 return host;
97 }
98
99 enum drm_panel_orientation
intel_dsi_get_panel_orientation(struct intel_connector * connector)100 intel_dsi_get_panel_orientation(struct intel_connector *connector)
101 {
102 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
103 enum drm_panel_orientation orientation;
104
105 orientation = connector->panel.vbt.dsi.orientation;
106 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
107 return orientation;
108
109 orientation = dev_priv->display.vbt.orientation;
110 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
111 return orientation;
112
113 return DRM_MODE_PANEL_ORIENTATION_NORMAL;
114 }
115