1*4882a593Smuzhiyun // SPDX-License-Identifier: MIT
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright © 2018 Intel Corporation
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <drm/drm_mipi_dsi.h>
7*4882a593Smuzhiyun #include "intel_dsi.h"
8*4882a593Smuzhiyun
intel_dsi_bitrate(const struct intel_dsi * intel_dsi)9*4882a593Smuzhiyun int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun if (WARN_ON(bpp < 0))
14*4882a593Smuzhiyun bpp = 16;
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun return intel_dsi->pclk * bpp / intel_dsi->lane_count;
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
intel_dsi_tlpx_ns(const struct intel_dsi * intel_dsi)19*4882a593Smuzhiyun int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun switch (intel_dsi->escape_clk_div) {
22*4882a593Smuzhiyun default:
23*4882a593Smuzhiyun case 0:
24*4882a593Smuzhiyun return 50;
25*4882a593Smuzhiyun case 1:
26*4882a593Smuzhiyun return 100;
27*4882a593Smuzhiyun case 2:
28*4882a593Smuzhiyun return 200;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
intel_dsi_get_modes(struct drm_connector * connector)32*4882a593Smuzhiyun int intel_dsi_get_modes(struct drm_connector *connector)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun struct drm_i915_private *i915 = to_i915(connector->dev);
35*4882a593Smuzhiyun struct intel_connector *intel_connector = to_intel_connector(connector);
36*4882a593Smuzhiyun struct drm_display_mode *mode;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun drm_dbg_kms(&i915->drm, "\n");
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun if (!intel_connector->panel.fixed_mode) {
41*4882a593Smuzhiyun drm_dbg_kms(&i915->drm, "no fixed mode\n");
42*4882a593Smuzhiyun return 0;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun mode = drm_mode_duplicate(connector->dev,
46*4882a593Smuzhiyun intel_connector->panel.fixed_mode);
47*4882a593Smuzhiyun if (!mode) {
48*4882a593Smuzhiyun drm_dbg_kms(&i915->drm, "drm_mode_duplicate failed\n");
49*4882a593Smuzhiyun return 0;
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun drm_mode_probed_add(connector, mode);
53*4882a593Smuzhiyun return 1;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
intel_dsi_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)56*4882a593Smuzhiyun enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
57*4882a593Smuzhiyun struct drm_display_mode *mode)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun struct drm_i915_private *dev_priv = to_i915(connector->dev);
60*4882a593Smuzhiyun struct intel_connector *intel_connector = to_intel_connector(connector);
61*4882a593Smuzhiyun const struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode;
62*4882a593Smuzhiyun int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun drm_dbg_kms(&dev_priv->drm, "\n");
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
67*4882a593Smuzhiyun return MODE_NO_DBLESCAN;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun if (fixed_mode) {
70*4882a593Smuzhiyun if (mode->hdisplay > fixed_mode->hdisplay)
71*4882a593Smuzhiyun return MODE_PANEL;
72*4882a593Smuzhiyun if (mode->vdisplay > fixed_mode->vdisplay)
73*4882a593Smuzhiyun return MODE_PANEL;
74*4882a593Smuzhiyun if (fixed_mode->clock > max_dotclk)
75*4882a593Smuzhiyun return MODE_CLOCK_HIGH;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun return intel_mode_valid_max_plane_size(dev_priv, mode);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
intel_dsi_host_init(struct intel_dsi * intel_dsi,const struct mipi_dsi_host_ops * funcs,enum port port)81*4882a593Smuzhiyun struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
82*4882a593Smuzhiyun const struct mipi_dsi_host_ops *funcs,
83*4882a593Smuzhiyun enum port port)
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun struct intel_dsi_host *host;
86*4882a593Smuzhiyun struct mipi_dsi_device *device;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun host = kzalloc(sizeof(*host), GFP_KERNEL);
89*4882a593Smuzhiyun if (!host)
90*4882a593Smuzhiyun return NULL;
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun host->base.ops = funcs;
93*4882a593Smuzhiyun host->intel_dsi = intel_dsi;
94*4882a593Smuzhiyun host->port = port;
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun /*
97*4882a593Smuzhiyun * We should call mipi_dsi_host_register(&host->base) here, but we don't
98*4882a593Smuzhiyun * have a host->dev, and we don't have OF stuff either. So just use the
99*4882a593Smuzhiyun * dsi framework as a library and hope for the best. Create the dsi
100*4882a593Smuzhiyun * devices by ourselves here too. Need to be careful though, because we
101*4882a593Smuzhiyun * don't initialize any of the driver model devices here.
102*4882a593Smuzhiyun */
103*4882a593Smuzhiyun device = kzalloc(sizeof(*device), GFP_KERNEL);
104*4882a593Smuzhiyun if (!device) {
105*4882a593Smuzhiyun kfree(host);
106*4882a593Smuzhiyun return NULL;
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun device->host = &host->base;
110*4882a593Smuzhiyun host->device = device;
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun return host;
113*4882a593Smuzhiyun }
114*4882a593Smuzhiyun
115*4882a593Smuzhiyun enum drm_panel_orientation
intel_dsi_get_panel_orientation(struct intel_connector * connector)116*4882a593Smuzhiyun intel_dsi_get_panel_orientation(struct intel_connector *connector)
117*4882a593Smuzhiyun {
118*4882a593Smuzhiyun struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
119*4882a593Smuzhiyun enum drm_panel_orientation orientation;
120*4882a593Smuzhiyun
121*4882a593Smuzhiyun orientation = dev_priv->vbt.dsi.orientation;
122*4882a593Smuzhiyun if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
123*4882a593Smuzhiyun return orientation;
124*4882a593Smuzhiyun
125*4882a593Smuzhiyun orientation = dev_priv->vbt.orientation;
126*4882a593Smuzhiyun if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
127*4882a593Smuzhiyun return orientation;
128*4882a593Smuzhiyun
129*4882a593Smuzhiyun return DRM_MODE_PANEL_ORIENTATION_NORMAL;
130*4882a593Smuzhiyun }
131