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