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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
12int 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
22int 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
35int intel_dsi_get_modes(struct drm_connector *connector)
36{
37 return intel_panel_get_modes(to_intel_connector(connector));
38}
39
40enum 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
65struct 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
99enum drm_panel_orientation
100intel_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}
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2018 Intel Corporation
4 */
5
6#include <drm/drm_mipi_dsi.h>
7#include "intel_dsi.h"
8
9int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
10{
11 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
12
13 if (WARN_ON(bpp < 0))
14 bpp = 16;
15
16 return intel_dsi->pclk * bpp / intel_dsi->lane_count;
17}
18
19int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
20{
21 switch (intel_dsi->escape_clk_div) {
22 default:
23 case 0:
24 return 50;
25 case 1:
26 return 100;
27 case 2:
28 return 200;
29 }
30}
31
32int intel_dsi_get_modes(struct drm_connector *connector)
33{
34 struct drm_i915_private *i915 = to_i915(connector->dev);
35 struct intel_connector *intel_connector = to_intel_connector(connector);
36 struct drm_display_mode *mode;
37
38 drm_dbg_kms(&i915->drm, "\n");
39
40 if (!intel_connector->panel.fixed_mode) {
41 drm_dbg_kms(&i915->drm, "no fixed mode\n");
42 return 0;
43 }
44
45 mode = drm_mode_duplicate(connector->dev,
46 intel_connector->panel.fixed_mode);
47 if (!mode) {
48 drm_dbg_kms(&i915->drm, "drm_mode_duplicate failed\n");
49 return 0;
50 }
51
52 drm_mode_probed_add(connector, mode);
53 return 1;
54}
55
56enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
57 struct drm_display_mode *mode)
58{
59 struct drm_i915_private *dev_priv = to_i915(connector->dev);
60 struct intel_connector *intel_connector = to_intel_connector(connector);
61 const struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode;
62 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
63
64 drm_dbg_kms(&dev_priv->drm, "\n");
65
66 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
67 return MODE_NO_DBLESCAN;
68
69 if (fixed_mode) {
70 if (mode->hdisplay > fixed_mode->hdisplay)
71 return MODE_PANEL;
72 if (mode->vdisplay > fixed_mode->vdisplay)
73 return MODE_PANEL;
74 if (fixed_mode->clock > max_dotclk)
75 return MODE_CLOCK_HIGH;
76 }
77
78 return intel_mode_valid_max_plane_size(dev_priv, mode);
79}
80
81struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
82 const struct mipi_dsi_host_ops *funcs,
83 enum port port)
84{
85 struct intel_dsi_host *host;
86 struct mipi_dsi_device *device;
87
88 host = kzalloc(sizeof(*host), GFP_KERNEL);
89 if (!host)
90 return NULL;
91
92 host->base.ops = funcs;
93 host->intel_dsi = intel_dsi;
94 host->port = port;
95
96 /*
97 * We should call mipi_dsi_host_register(&host->base) here, but we don't
98 * have a host->dev, and we don't have OF stuff either. So just use the
99 * dsi framework as a library and hope for the best. Create the dsi
100 * devices by ourselves here too. Need to be careful though, because we
101 * don't initialize any of the driver model devices here.
102 */
103 device = kzalloc(sizeof(*device), GFP_KERNEL);
104 if (!device) {
105 kfree(host);
106 return NULL;
107 }
108
109 device->host = &host->base;
110 host->device = device;
111
112 return host;
113}
114
115enum drm_panel_orientation
116intel_dsi_get_panel_orientation(struct intel_connector *connector)
117{
118 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
119 enum drm_panel_orientation orientation;
120
121 orientation = dev_priv->vbt.dsi.orientation;
122 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
123 return orientation;
124
125 orientation = dev_priv->vbt.orientation;
126 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
127 return orientation;
128
129 return DRM_MODE_PANEL_ORIENTATION_NORMAL;
130}