tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2// Copyright (c) 2024 Barnabas Czeman <barnabas.czeman@mainlining.org>
3// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
4// Copyright (c) 2013, The Linux Foundation. All rights reserved.
5
6#include <linux/delay.h>
7#include <linux/gpio/consumer.h>
8#include <linux/mod_devicetable.h>
9#include <linux/module.h>
10#include <linux/regulator/consumer.h>
11
12#include <video/mipi_display.h>
13
14#include <drm/drm_mipi_dsi.h>
15#include <drm/drm_modes.h>
16#include <drm/drm_panel.h>
17#include <drm/drm_probe_helper.h>
18
19struct boe_td4320 {
20 struct drm_panel panel;
21 struct mipi_dsi_device *dsi;
22 struct regulator_bulk_data *supplies;
23 struct gpio_desc *reset_gpio;
24};
25
26static const struct regulator_bulk_data boe_td4320_supplies[] = {
27 { .supply = "iovcc" },
28 { .supply = "vsn" },
29 { .supply = "vsp" },
30};
31
32static inline struct boe_td4320 *to_boe_td4320(struct drm_panel *panel)
33{
34 return container_of(panel, struct boe_td4320, panel);
35}
36
37static void boe_td4320_reset(struct boe_td4320 *ctx)
38{
39 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
40 usleep_range(1000, 2000);
41 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
42 usleep_range(5000, 6000);
43 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
44 msleep(30);
45}
46
47static int boe_td4320_on(struct boe_td4320 *ctx)
48{
49 struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
50
51 ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
52
53 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
54 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x00);
55 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb8,
56 0x19, 0x55, 0x00, 0xbe, 0x00, 0x00,
57 0x00);
58 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb9,
59 0x4d, 0x55, 0x05, 0xe6, 0x00, 0x02,
60 0x03);
61 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xba,
62 0x9b, 0x5b, 0x07, 0xe6, 0x00, 0x13,
63 0x00);
64 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xf9,
65 0x44, 0x3f, 0x00, 0x8d, 0xbf);
66 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xce,
67 0x5d, 0x00, 0x0f, 0x1f, 0x2f, 0x3f,
68 0x4f, 0x5f, 0x6f, 0x7f, 0x8f, 0x9f,
69 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff,
70 0x04, 0x00, 0x02, 0x02, 0x42, 0x01,
71 0x69, 0x5a, 0x40, 0x40, 0x00, 0x00,
72 0x04, 0xfa, 0x00);
73 mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00b8);
74 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,
75 0x2c);
76 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
77 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
78 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);
79 mipi_dsi_msleep(&dsi_ctx, 96);
80 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);
81 mipi_dsi_msleep(&dsi_ctx, 20);
82
83 return dsi_ctx.accum_err;
84}
85
86static int boe_td4320_off(struct boe_td4320 *ctx)
87{
88 struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
89
90 ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
91
92 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
93 mipi_dsi_msleep(&dsi_ctx, 20);
94 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
95 mipi_dsi_msleep(&dsi_ctx, 120);
96
97 return dsi_ctx.accum_err;
98}
99
100static int boe_td4320_prepare(struct drm_panel *panel)
101{
102 struct boe_td4320 *ctx = to_boe_td4320(panel);
103 struct device *dev = &ctx->dsi->dev;
104 int ret;
105
106 ret = regulator_bulk_enable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
107 if (ret < 0) {
108 dev_err(dev, "Failed to enable regulators: %d\n", ret);
109 return ret;
110 }
111
112 boe_td4320_reset(ctx);
113
114 ret = boe_td4320_on(ctx);
115 if (ret < 0) {
116 dev_err(dev, "Failed to initialize panel: %d\n", ret);
117 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
118 regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
119 return ret;
120 }
121
122 return 0;
123}
124
125static int boe_td4320_unprepare(struct drm_panel *panel)
126{
127 struct boe_td4320 *ctx = to_boe_td4320(panel);
128 struct device *dev = &ctx->dsi->dev;
129 int ret;
130
131 ret = boe_td4320_off(ctx);
132 if (ret < 0)
133 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
134
135 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
136 regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
137
138 return 0;
139}
140
141static const struct drm_display_mode boe_td4320_mode = {
142 .clock = (1080 + 86 + 2 + 100) * (2340 + 4 + 4 + 60) * 60 / 1000,
143 .hdisplay = 1080,
144 .hsync_start = 1080 + 86,
145 .hsync_end = 1080 + 86 + 2,
146 .htotal = 1080 + 86 + 2 + 100,
147 .vdisplay = 2340,
148 .vsync_start = 2340 + 4,
149 .vsync_end = 2340 + 4 + 4,
150 .vtotal = 2340 + 4 + 4 + 60,
151 .width_mm = 67,
152 .height_mm = 145,
153 .type = DRM_MODE_TYPE_DRIVER,
154};
155
156static int boe_td4320_get_modes(struct drm_panel *panel,
157 struct drm_connector *connector)
158{
159 return drm_connector_helper_get_modes_fixed(connector, &boe_td4320_mode);
160}
161
162static const struct drm_panel_funcs boe_td4320_panel_funcs = {
163 .prepare = boe_td4320_prepare,
164 .unprepare = boe_td4320_unprepare,
165 .get_modes = boe_td4320_get_modes,
166};
167
168static int boe_td4320_probe(struct mipi_dsi_device *dsi)
169{
170 struct device *dev = &dsi->dev;
171 struct boe_td4320 *ctx;
172 int ret;
173
174 ctx = devm_drm_panel_alloc(dev, struct boe_td4320, panel,
175 &boe_td4320_panel_funcs,
176 DRM_MODE_CONNECTOR_DSI);
177 if (IS_ERR(ctx))
178 return PTR_ERR(ctx);
179
180 ret = devm_regulator_bulk_get_const(dev,
181 ARRAY_SIZE(boe_td4320_supplies),
182 boe_td4320_supplies,
183 &ctx->supplies);
184 if (ret < 0)
185 return ret;
186
187 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
188 if (IS_ERR(ctx->reset_gpio))
189 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
190 "Failed to get reset-gpios\n");
191
192 ctx->dsi = dsi;
193 mipi_dsi_set_drvdata(dsi, ctx);
194
195 dsi->lanes = 4;
196 dsi->format = MIPI_DSI_FMT_RGB888;
197 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
198 MIPI_DSI_CLOCK_NON_CONTINUOUS;
199
200 ctx->panel.prepare_prev_first = true;
201
202 ret = drm_panel_of_backlight(&ctx->panel);
203 if (ret)
204 return dev_err_probe(dev, ret, "Failed to get backlight\n");
205
206 drm_panel_add(&ctx->panel);
207
208 ret = mipi_dsi_attach(dsi);
209 if (ret < 0) {
210 drm_panel_remove(&ctx->panel);
211 return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
212 }
213
214 return 0;
215}
216
217static void boe_td4320_remove(struct mipi_dsi_device *dsi)
218{
219 struct boe_td4320 *ctx = mipi_dsi_get_drvdata(dsi);
220 int ret;
221
222 ret = mipi_dsi_detach(dsi);
223 if (ret < 0)
224 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
225
226 drm_panel_remove(&ctx->panel);
227}
228
229static const struct of_device_id boe_td4320_of_match[] = {
230 { .compatible = "boe,td4320" },
231 { /* sentinel */ }
232};
233MODULE_DEVICE_TABLE(of, boe_td4320_of_match);
234
235static struct mipi_dsi_driver boe_td4320_driver = {
236 .probe = boe_td4320_probe,
237 .remove = boe_td4320_remove,
238 .driver = {
239 .name = "panel-boe-td4320",
240 .of_match_table = boe_td4320_of_match,
241 },
242};
243module_mipi_dsi_driver(boe_td4320_driver);
244
245MODULE_AUTHOR("Barnabas Czeman <barnabas.czeman@mainlining.org>");
246MODULE_DESCRIPTION("DRM driver for boe td4320 fhdplus video mode dsi panel");
247MODULE_LICENSE("GPL");