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// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
3// Copyright (c) 2013, The Linux Foundation. All rights reserved.
4// Copyright (c) 2024, Neil Armstrong <neil.armstrong@linaro.org>
5
6#include <linux/delay.h>
7#include <linux/gpio/consumer.h>
8#include <linux/module.h>
9#include <linux/of.h>
10#include <linux/regulator/consumer.h>
11
12#include <drm/drm_mipi_dsi.h>
13#include <drm/drm_modes.h>
14#include <drm/drm_panel.h>
15#include <drm/drm_probe_helper.h>
16
17struct boe_tv101wum_ll2 {
18 struct drm_panel panel;
19 struct mipi_dsi_device *dsi;
20 struct gpio_desc *reset_gpio;
21 struct regulator_bulk_data *supplies;
22};
23
24static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {
25 { .supply = "vsp" },
26 { .supply = "vsn" },
27};
28
29static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)
30{
31 return container_of(panel, struct boe_tv101wum_ll2, panel);
32}
33
34static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)
35{
36 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
37 usleep_range(5000, 6000);
38 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
39 usleep_range(5000, 6000);
40 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
41
42 msleep(120);
43}
44
45static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *ctx)
46{
47 struct mipi_dsi_device *dsi = ctx->dsi;
48 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
49
50 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
51
52 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
53
54 mipi_dsi_msleep(&dsi_ctx, 120);
55
56 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);
57 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,
58 0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);
59 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);
60 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);
61 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);
62 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);
63 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);
64
65 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);
66 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);
67 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);
68
69 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
70
71 mipi_dsi_msleep(&dsi_ctx, 20);
72
73 return dsi_ctx.accum_err;
74}
75
76static void boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *ctx)
77{
78 struct mipi_dsi_device *dsi = ctx->dsi;
79 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
80
81 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
82
83 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
84
85 mipi_dsi_msleep(&dsi_ctx, 70);
86
87 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
88
89 mipi_dsi_msleep(&dsi_ctx, 20);
90
91 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);
92 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);
93
94 mipi_dsi_msleep(&dsi_ctx, 150);
95}
96
97static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)
98{
99 struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
100 int ret;
101
102 ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
103 ctx->supplies);
104 if (ret < 0)
105 return ret;
106
107 boe_tv101wum_ll2_reset(ctx);
108
109 ret = boe_tv101wum_ll2_on(ctx);
110 if (ret < 0) {
111 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
112 regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
113 ctx->supplies);
114 return ret;
115 }
116
117 return 0;
118}
119
120static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)
121{
122 struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
123
124 /* Ignore errors on failure, in any case set gpio and disable regulators */
125 boe_tv101wum_ll2_off(ctx);
126
127 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
128
129 regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
130 ctx->supplies);
131
132 return 0;
133}
134
135static const struct drm_display_mode boe_tv101wum_ll2_mode = {
136 .clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,
137 .hdisplay = 1200,
138 .hsync_start = 1200 + 27,
139 .hsync_end = 1200 + 27 + 8,
140 .htotal = 1200 + 27 + 8 + 12,
141 .vdisplay = 1920,
142 .vsync_start = 1920 + 155,
143 .vsync_end = 1920 + 155 + 8,
144 .vtotal = 1920 + 155 + 8 + 32,
145 .width_mm = 136,
146 .height_mm = 217,
147 .type = DRM_MODE_TYPE_DRIVER,
148};
149
150static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,
151 struct drm_connector *connector)
152{
153 /* We do not set display_info.bpc since unset value is bpc=8 by default */
154 return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);
155}
156
157static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {
158 .prepare = boe_tv101wum_ll2_prepare,
159 .unprepare = boe_tv101wum_ll2_unprepare,
160 .get_modes = boe_tv101wum_ll2_get_modes,
161};
162
163static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)
164{
165 struct device *dev = &dsi->dev;
166 struct boe_tv101wum_ll2 *ctx;
167 int ret;
168
169 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
170 if (!ctx)
171 return -ENOMEM;
172
173 ret = devm_regulator_bulk_get_const(&dsi->dev,
174 ARRAY_SIZE(boe_tv101wum_ll2_supplies),
175 boe_tv101wum_ll2_supplies,
176 &ctx->supplies);
177 if (ret < 0)
178 return ret;
179
180 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
181 if (IS_ERR(ctx->reset_gpio))
182 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
183 "Failed to get reset-gpios\n");
184
185 ctx->dsi = dsi;
186 mipi_dsi_set_drvdata(dsi, ctx);
187
188 dsi->lanes = 4;
189 dsi->format = MIPI_DSI_FMT_RGB888;
190 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
191 MIPI_DSI_MODE_VIDEO_HSE;
192
193 drm_panel_init(&ctx->panel, dev, &boe_tv101wum_ll2_panel_funcs,
194 DRM_MODE_CONNECTOR_DSI);
195 ctx->panel.prepare_prev_first = true;
196
197 ret = drm_panel_of_backlight(&ctx->panel);
198 if (ret)
199 return dev_err_probe(dev, ret, "Failed to get backlight\n");
200
201 drm_panel_add(&ctx->panel);
202
203 ret = mipi_dsi_attach(dsi);
204 if (ret < 0) {
205 drm_panel_remove(&ctx->panel);
206 return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
207 }
208
209 return 0;
210}
211
212static void boe_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)
213{
214 struct boe_tv101wum_ll2 *ctx = mipi_dsi_get_drvdata(dsi);
215 int ret;
216
217 ret = mipi_dsi_detach(dsi);
218 if (ret < 0)
219 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
220
221 drm_panel_remove(&ctx->panel);
222}
223
224static const struct of_device_id boe_tv101wum_ll2_of_match[] = {
225 { .compatible = "boe,tv101wum-ll2" },
226 { /* sentinel */ }
227};
228MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);
229
230static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {
231 .probe = boe_tv101wum_ll2_probe,
232 .remove = boe_tv101wum_ll2_remove,
233 .driver = {
234 .name = "panel-boe-tv101wum_ll2",
235 .of_match_table = boe_tv101wum_ll2_of_match,
236 },
237};
238module_mipi_dsi_driver(boe_tv101wum_ll2_driver);
239
240MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");
241MODULE_LICENSE("GPL");