1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>
4 *
5 * Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:
6 * https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi
7 */
8
9 #include <linux/delay.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13
14 #include <video/mipi_display.h>
15
16 #include <drm/drm_mipi_dsi.h>
17 #include <drm/drm_modes.h>
18 #include <drm/drm_panel.h>
19
20 struct jdi_fhd_r63452 {
21 struct drm_panel panel;
22 struct mipi_dsi_device *dsi;
23 struct gpio_desc *reset_gpio;
24 bool prepared;
25 };
26
to_jdi_fhd_r63452(struct drm_panel * panel)27 static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
28 {
29 return container_of(panel, struct jdi_fhd_r63452, panel);
30 }
31
jdi_fhd_r63452_reset(struct jdi_fhd_r63452 * ctx)32 static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
33 {
34 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
35 usleep_range(10000, 11000);
36 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
37 usleep_range(1000, 2000);
38 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
39 usleep_range(10000, 11000);
40 }
41
jdi_fhd_r63452_on(struct jdi_fhd_r63452 * ctx)42 static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
43 {
44 struct mipi_dsi_device *dsi = ctx->dsi;
45 struct device *dev = &dsi->dev;
46 int ret;
47
48 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
49
50 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
51 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
52 mipi_dsi_generic_write_seq(dsi, 0xec,
53 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
54 0x13, 0x15, 0x68, 0x0b, 0xb5);
55 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
56
57 ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
58 if (ret < 0) {
59 dev_err(dev, "Failed to set tear on: %d\n", ret);
60 return ret;
61 }
62
63 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
64
65 ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
66 if (ret < 0) {
67 dev_err(dev, "Failed to set pixel format: %d\n", ret);
68 return ret;
69 }
70
71 ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
72 if (ret < 0) {
73 dev_err(dev, "Failed to set column address: %d\n", ret);
74 return ret;
75 }
76
77 ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
78 if (ret < 0) {
79 dev_err(dev, "Failed to set page address: %d\n", ret);
80 return ret;
81 }
82
83 ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
84 if (ret < 0) {
85 dev_err(dev, "Failed to set tear scanline: %d\n", ret);
86 return ret;
87 }
88
89 ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
90 if (ret < 0) {
91 dev_err(dev, "Failed to set display brightness: %d\n", ret);
92 return ret;
93 }
94
95 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
96 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
97 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
98 mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
99
100 ret = mipi_dsi_dcs_set_display_on(dsi);
101 if (ret < 0) {
102 dev_err(dev, "Failed to set display on: %d\n", ret);
103 return ret;
104 }
105 msleep(20);
106
107 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
108 if (ret < 0) {
109 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
110 return ret;
111 }
112 msleep(80);
113
114 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04);
115 mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
116 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11);
117 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
118
119 return 0;
120 }
121
jdi_fhd_r63452_off(struct jdi_fhd_r63452 * ctx)122 static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
123 {
124 struct mipi_dsi_device *dsi = ctx->dsi;
125 struct device *dev = &dsi->dev;
126 int ret;
127
128 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
129
130 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
131 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
132 mipi_dsi_generic_write_seq(dsi, 0xec,
133 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
134 0x13, 0x15, 0x68, 0x0b, 0x95);
135 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
136
137 ret = mipi_dsi_dcs_set_display_off(dsi);
138 if (ret < 0) {
139 dev_err(dev, "Failed to set display off: %d\n", ret);
140 return ret;
141 }
142 usleep_range(2000, 3000);
143
144 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
145 if (ret < 0) {
146 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
147 return ret;
148 }
149 msleep(120);
150
151 return 0;
152 }
153
jdi_fhd_r63452_prepare(struct drm_panel * panel)154 static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
155 {
156 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
157 struct device *dev = &ctx->dsi->dev;
158 int ret;
159
160 if (ctx->prepared)
161 return 0;
162
163 jdi_fhd_r63452_reset(ctx);
164
165 ret = jdi_fhd_r63452_on(ctx);
166 if (ret < 0) {
167 dev_err(dev, "Failed to initialize panel: %d\n", ret);
168 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
169 return ret;
170 }
171
172 ctx->prepared = true;
173 return 0;
174 }
175
jdi_fhd_r63452_unprepare(struct drm_panel * panel)176 static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
177 {
178 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
179 struct device *dev = &ctx->dsi->dev;
180 int ret;
181
182 if (!ctx->prepared)
183 return 0;
184
185 ret = jdi_fhd_r63452_off(ctx);
186 if (ret < 0)
187 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
188
189 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
190
191 ctx->prepared = false;
192 return 0;
193 }
194
195 static const struct drm_display_mode jdi_fhd_r63452_mode = {
196 .clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
197 .hdisplay = 1080,
198 .hsync_start = 1080 + 120,
199 .hsync_end = 1080 + 120 + 16,
200 .htotal = 1080 + 120 + 16 + 40,
201 .vdisplay = 1920,
202 .vsync_start = 1920 + 4,
203 .vsync_end = 1920 + 4 + 2,
204 .vtotal = 1920 + 4 + 2 + 4,
205 .width_mm = 64,
206 .height_mm = 114,
207 };
208
jdi_fhd_r63452_get_modes(struct drm_panel * panel,struct drm_connector * connector)209 static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
210 struct drm_connector *connector)
211 {
212 struct drm_display_mode *mode;
213
214 mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
215 if (!mode)
216 return -ENOMEM;
217
218 drm_mode_set_name(mode);
219
220 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
221 connector->display_info.width_mm = mode->width_mm;
222 connector->display_info.height_mm = mode->height_mm;
223 drm_mode_probed_add(connector, mode);
224
225 return 1;
226 }
227
228 static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
229 .prepare = jdi_fhd_r63452_prepare,
230 .unprepare = jdi_fhd_r63452_unprepare,
231 .get_modes = jdi_fhd_r63452_get_modes,
232 };
233
jdi_fhd_r63452_probe(struct mipi_dsi_device * dsi)234 static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
235 {
236 struct device *dev = &dsi->dev;
237 struct jdi_fhd_r63452 *ctx;
238 int ret;
239
240 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
241 if (!ctx)
242 return -ENOMEM;
243
244 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
245 if (IS_ERR(ctx->reset_gpio))
246 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
247 "Failed to get reset-gpios\n");
248
249 ctx->dsi = dsi;
250 mipi_dsi_set_drvdata(dsi, ctx);
251
252 dsi->lanes = 4;
253 dsi->format = MIPI_DSI_FMT_RGB888;
254 dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
255 MIPI_DSI_CLOCK_NON_CONTINUOUS;
256
257 drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
258 DRM_MODE_CONNECTOR_DSI);
259
260 ret = drm_panel_of_backlight(&ctx->panel);
261 if (ret)
262 return dev_err_probe(dev, ret, "Failed to get backlight\n");
263
264 drm_panel_add(&ctx->panel);
265
266 ret = mipi_dsi_attach(dsi);
267 if (ret < 0) {
268 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
269 return ret;
270 }
271
272 return 0;
273 }
274
jdi_fhd_r63452_remove(struct mipi_dsi_device * dsi)275 static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
276 {
277 struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
278 int ret;
279
280 ret = mipi_dsi_detach(dsi);
281 if (ret < 0)
282 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
283
284 drm_panel_remove(&ctx->panel);
285 }
286
287 static const struct of_device_id jdi_fhd_r63452_of_match[] = {
288 { .compatible = "jdi,fhd-r63452" },
289 { /* sentinel */ }
290 };
291 MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);
292
293 static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
294 .probe = jdi_fhd_r63452_probe,
295 .remove = jdi_fhd_r63452_remove,
296 .driver = {
297 .name = "panel-jdi-fhd-r63452",
298 .of_match_table = jdi_fhd_r63452_of_match,
299 },
300 };
301 module_mipi_dsi_driver(jdi_fhd_r63452_driver);
302
303 MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
304 MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
305 MODULE_LICENSE("GPL v2");
306