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1// SPDX-License-Identifier: GPL-2.0-only
2
3#include <linux/backlight.h>
4#include <linux/delay.h>
5#include <linux/gpio/consumer.h>
6#include <linux/module.h>
7#include <linux/of.h>
8#include <linux/regulator/consumer.h>
9
10#include <drm/drm_mipi_dsi.h>
11#include <drm/drm_modes.h>
12#include <drm/drm_panel.h>
13
14struct tm5p5_nt35596 {
15 struct drm_panel panel;
16 struct mipi_dsi_device *dsi;
17 struct regulator_bulk_data supplies[2];
18 struct gpio_desc *reset_gpio;
19};
20
21static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)
22{
23 return container_of(panel, struct tm5p5_nt35596, panel);
24}
25
26static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx)
27{
28 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
29 usleep_range(1000, 2000);
30 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
31 usleep_range(1000, 2000);
32 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
33 usleep_range(15000, 16000);
34}
35
36static void tm5p5_nt35596_on(struct mipi_dsi_multi_context *dsi_ctx)
37{
38 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x05);
39 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
40 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xc5, 0x31);
41 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x04);
42 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x01, 0x84);
43 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x05, 0x25);
44 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x06, 0x01);
45 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x07, 0x20);
46 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x08, 0x06);
47 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x09, 0x08);
48 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0a, 0x10);
49 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0b, 0x10);
50 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0c, 0x10);
51 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0d, 0x14);
52 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0e, 0x14);
53 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0f, 0x14);
54 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x10, 0x14);
55 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x14);
56 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x12, 0x14);
57 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x17, 0xf3);
58 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x18, 0xc0);
59 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x19, 0xc0);
60 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1a, 0xc0);
61 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1b, 0xb3);
62 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1c, 0xb3);
63 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1d, 0xb3);
64 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1e, 0xb3);
65 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1f, 0xb3);
66 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x20, 0xb3);
67 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
68 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x00);
69 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
70 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x35, 0x01);
71 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd3, 0x06);
72 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd4, 0x04);
73 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x5e, 0x0d);
74 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x00);
75
76 mipi_dsi_msleep(dsi_ctx, 100);
77
78 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x29, 0x00);
79 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x53, 0x24);
80}
81
82static void tm5p5_nt35596_off(struct mipi_dsi_multi_context *dsi_ctx)
83{
84 mipi_dsi_dcs_set_display_off_multi(dsi_ctx);
85
86 mipi_dsi_msleep(dsi_ctx, 60);
87
88 mipi_dsi_dcs_enter_sleep_mode_multi(dsi_ctx);
89
90 mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0x4f, 0x01);
91}
92
93static int tm5p5_nt35596_prepare(struct drm_panel *panel)
94{
95 struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
96 struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};
97
98 dsi_ctx.accum_err = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
99 if (dsi_ctx.accum_err)
100 return dsi_ctx.accum_err;
101
102 tm5p5_nt35596_reset(ctx);
103
104 tm5p5_nt35596_on(&dsi_ctx);
105
106 if (dsi_ctx.accum_err) {
107 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
108 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
109 ctx->supplies);
110 }
111
112 return dsi_ctx.accum_err;
113}
114
115static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
116{
117 struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
118 struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};
119
120 tm5p5_nt35596_off(&dsi_ctx);
121
122 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
123 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
124 ctx->supplies);
125
126 return dsi_ctx.accum_err;
127}
128
129static const struct drm_display_mode tm5p5_nt35596_mode = {
130 .clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000,
131 .hdisplay = 1080,
132 .hsync_start = 1080 + 100,
133 .hsync_end = 1080 + 100 + 8,
134 .htotal = 1080 + 100 + 8 + 16,
135 .vdisplay = 1920,
136 .vsync_start = 1920 + 4,
137 .vsync_end = 1920 + 4 + 2,
138 .vtotal = 1920 + 4 + 2 + 4,
139 .width_mm = 68,
140 .height_mm = 121,
141};
142
143static int tm5p5_nt35596_get_modes(struct drm_panel *panel,
144 struct drm_connector *connector)
145{
146 struct drm_display_mode *mode;
147
148 mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_mode);
149 if (!mode)
150 return -ENOMEM;
151
152 drm_mode_set_name(mode);
153
154 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
155 connector->display_info.width_mm = mode->width_mm;
156 connector->display_info.height_mm = mode->height_mm;
157 drm_mode_probed_add(connector, mode);
158
159 return 1;
160}
161
162static const struct drm_panel_funcs tm5p5_nt35596_panel_funcs = {
163 .prepare = tm5p5_nt35596_prepare,
164 .unprepare = tm5p5_nt35596_unprepare,
165 .get_modes = tm5p5_nt35596_get_modes,
166};
167
168static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl)
169{
170 struct mipi_dsi_device *dsi = bl_get_data(bl);
171 u16 brightness = backlight_get_brightness(bl);
172 int ret;
173
174 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
175
176 ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
177 if (ret < 0)
178 return ret;
179
180 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
181
182 return 0;
183}
184
185static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl)
186{
187 struct mipi_dsi_device *dsi = bl_get_data(bl);
188 u16 brightness = bl->props.brightness;
189 int ret;
190
191 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
192
193 ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
194 if (ret < 0)
195 return ret;
196
197 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
198
199 return brightness & 0xff;
200}
201
202static const struct backlight_ops tm5p5_nt35596_bl_ops = {
203 .update_status = tm5p5_nt35596_bl_update_status,
204 .get_brightness = tm5p5_nt35596_bl_get_brightness,
205};
206
207static struct backlight_device *
208tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi)
209{
210 struct device *dev = &dsi->dev;
211 const struct backlight_properties props = {
212 .type = BACKLIGHT_RAW,
213 .brightness = 255,
214 .max_brightness = 255,
215 };
216
217 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
218 &tm5p5_nt35596_bl_ops, &props);
219}
220
221static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)
222{
223 struct device *dev = &dsi->dev;
224 struct tm5p5_nt35596 *ctx;
225 int ret;
226
227 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
228 if (!ctx)
229 return -ENOMEM;
230
231 ctx->supplies[0].supply = "vdd";
232 ctx->supplies[1].supply = "vddio";
233 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
234 ctx->supplies);
235 if (ret < 0) {
236 dev_err(dev, "Failed to get regulators: %d\n", ret);
237 return ret;
238 }
239
240 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
241 if (IS_ERR(ctx->reset_gpio)) {
242 ret = PTR_ERR(ctx->reset_gpio);
243 dev_err(dev, "Failed to get reset-gpios: %d\n", ret);
244 return ret;
245 }
246
247 ctx->dsi = dsi;
248 mipi_dsi_set_drvdata(dsi, ctx);
249
250 dsi->lanes = 4;
251 dsi->format = MIPI_DSI_FMT_RGB888;
252 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
253 MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET |
254 MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
255
256 drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs,
257 DRM_MODE_CONNECTOR_DSI);
258
259 ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi);
260 if (IS_ERR(ctx->panel.backlight)) {
261 ret = PTR_ERR(ctx->panel.backlight);
262 dev_err(dev, "Failed to create backlight: %d\n", ret);
263 return ret;
264 }
265
266 drm_panel_add(&ctx->panel);
267
268 ret = mipi_dsi_attach(dsi);
269 if (ret < 0) {
270 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
271 return ret;
272 }
273
274 return 0;
275}
276
277static void tm5p5_nt35596_remove(struct mipi_dsi_device *dsi)
278{
279 struct tm5p5_nt35596 *ctx = mipi_dsi_get_drvdata(dsi);
280 int ret;
281
282 ret = mipi_dsi_detach(dsi);
283 if (ret < 0)
284 dev_err(&dsi->dev,
285 "Failed to detach from DSI host: %d\n", ret);
286
287 drm_panel_remove(&ctx->panel);
288}
289
290static const struct of_device_id tm5p5_nt35596_of_match[] = {
291 { .compatible = "asus,z00t-tm5p5-n35596" },
292 { /* sentinel */ }
293};
294MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match);
295
296static struct mipi_dsi_driver tm5p5_nt35596_driver = {
297 .probe = tm5p5_nt35596_probe,
298 .remove = tm5p5_nt35596_remove,
299 .driver = {
300 .name = "panel-tm5p5-nt35596",
301 .of_match_table = tm5p5_nt35596_of_match,
302 },
303};
304module_mipi_dsi_driver(tm5p5_nt35596_driver);
305
306MODULE_AUTHOR("Konrad Dybcio <konradybcio@gmail.com>");
307MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel");
308MODULE_LICENSE("GPL v2");