1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (c) 2019, The Linux Foundation. All rights reserved. |
4 | */ |
5 | |
6 | #include <linux/delay.h> |
7 | #include <linux/module.h> |
8 | #include <linux/mod_devicetable.h> |
9 | #include <linux/gpio/consumer.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 | |
18 | struct visionox_rm69299 { |
19 | struct drm_panel panel; |
20 | struct regulator_bulk_data supplies[2]; |
21 | struct gpio_desc *reset_gpio; |
22 | struct mipi_dsi_device *dsi; |
23 | }; |
24 | |
25 | static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel) |
26 | { |
27 | return container_of(panel, struct visionox_rm69299, panel); |
28 | } |
29 | |
30 | static int visionox_rm69299_power_on(struct visionox_rm69299 *ctx) |
31 | { |
32 | int ret; |
33 | |
34 | ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies); |
35 | if (ret < 0) |
36 | return ret; |
37 | |
38 | /* |
39 | * Reset sequence of visionox panel requires the panel to be |
40 | * out of reset for 10ms, followed by being held in reset |
41 | * for 10ms and then out again |
42 | */ |
43 | gpiod_set_value(desc: ctx->reset_gpio, value: 1); |
44 | usleep_range(min: 10000, max: 20000); |
45 | gpiod_set_value(desc: ctx->reset_gpio, value: 0); |
46 | usleep_range(min: 10000, max: 20000); |
47 | gpiod_set_value(desc: ctx->reset_gpio, value: 1); |
48 | usleep_range(min: 10000, max: 20000); |
49 | |
50 | return 0; |
51 | } |
52 | |
53 | static int visionox_rm69299_power_off(struct visionox_rm69299 *ctx) |
54 | { |
55 | gpiod_set_value(desc: ctx->reset_gpio, value: 0); |
56 | |
57 | return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies); |
58 | } |
59 | |
60 | static int visionox_rm69299_unprepare(struct drm_panel *panel) |
61 | { |
62 | struct visionox_rm69299 *ctx = panel_to_ctx(panel); |
63 | int ret; |
64 | |
65 | ctx->dsi->mode_flags = 0; |
66 | |
67 | ret = mipi_dsi_dcs_write(dsi: ctx->dsi, cmd: MIPI_DCS_SET_DISPLAY_OFF, NULL, len: 0); |
68 | if (ret < 0) |
69 | dev_err(ctx->panel.dev, "set_display_off cmd failed ret = %d\n" , ret); |
70 | |
71 | /* 120ms delay required here as per DCS spec */ |
72 | msleep(msecs: 120); |
73 | |
74 | ret = mipi_dsi_dcs_write(dsi: ctx->dsi, cmd: MIPI_DCS_ENTER_SLEEP_MODE, NULL, len: 0); |
75 | if (ret < 0) { |
76 | dev_err(ctx->panel.dev, "enter_sleep cmd failed ret = %d\n" , ret); |
77 | } |
78 | |
79 | ret = visionox_rm69299_power_off(ctx); |
80 | |
81 | return ret; |
82 | } |
83 | |
84 | static int visionox_rm69299_prepare(struct drm_panel *panel) |
85 | { |
86 | struct visionox_rm69299 *ctx = panel_to_ctx(panel); |
87 | int ret; |
88 | |
89 | ret = visionox_rm69299_power_on(ctx); |
90 | if (ret < 0) |
91 | return ret; |
92 | |
93 | ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM; |
94 | |
95 | ret = mipi_dsi_dcs_write_buffer(dsi: ctx->dsi, data: (u8[]) { 0xfe, 0x00 }, len: 2); |
96 | if (ret < 0) { |
97 | dev_err(ctx->panel.dev, "cmd set tx 0 failed, ret = %d\n" , ret); |
98 | goto power_off; |
99 | } |
100 | |
101 | ret = mipi_dsi_dcs_write_buffer(dsi: ctx->dsi, data: (u8[]) { 0xc2, 0x08 }, len: 2); |
102 | if (ret < 0) { |
103 | dev_err(ctx->panel.dev, "cmd set tx 1 failed, ret = %d\n" , ret); |
104 | goto power_off; |
105 | } |
106 | |
107 | ret = mipi_dsi_dcs_write_buffer(dsi: ctx->dsi, data: (u8[]) { 0x35, 0x00 }, len: 2); |
108 | if (ret < 0) { |
109 | dev_err(ctx->panel.dev, "cmd set tx 2 failed, ret = %d\n" , ret); |
110 | goto power_off; |
111 | } |
112 | |
113 | ret = mipi_dsi_dcs_write_buffer(dsi: ctx->dsi, data: (u8[]) { 0x51, 0xff }, len: 2); |
114 | if (ret < 0) { |
115 | dev_err(ctx->panel.dev, "cmd set tx 3 failed, ret = %d\n" , ret); |
116 | goto power_off; |
117 | } |
118 | |
119 | ret = mipi_dsi_dcs_write(dsi: ctx->dsi, cmd: MIPI_DCS_EXIT_SLEEP_MODE, NULL, len: 0); |
120 | if (ret < 0) { |
121 | dev_err(ctx->panel.dev, "exit_sleep_mode cmd failed ret = %d\n" , ret); |
122 | goto power_off; |
123 | } |
124 | |
125 | /* Per DSI spec wait 120ms after sending exit sleep DCS command */ |
126 | msleep(msecs: 120); |
127 | |
128 | ret = mipi_dsi_dcs_write(dsi: ctx->dsi, cmd: MIPI_DCS_SET_DISPLAY_ON, NULL, len: 0); |
129 | if (ret < 0) { |
130 | dev_err(ctx->panel.dev, "set_display_on cmd failed ret = %d\n" , ret); |
131 | goto power_off; |
132 | } |
133 | |
134 | /* Per DSI spec wait 120ms after sending set_display_on DCS command */ |
135 | msleep(msecs: 120); |
136 | |
137 | return 0; |
138 | |
139 | power_off: |
140 | return ret; |
141 | } |
142 | |
143 | static const struct drm_display_mode visionox_rm69299_1080x2248_60hz = { |
144 | .name = "1080x2248" , |
145 | .clock = 158695, |
146 | .hdisplay = 1080, |
147 | .hsync_start = 1080 + 26, |
148 | .hsync_end = 1080 + 26 + 2, |
149 | .htotal = 1080 + 26 + 2 + 36, |
150 | .vdisplay = 2248, |
151 | .vsync_start = 2248 + 56, |
152 | .vsync_end = 2248 + 56 + 4, |
153 | .vtotal = 2248 + 56 + 4 + 4, |
154 | .flags = 0, |
155 | }; |
156 | |
157 | static int visionox_rm69299_get_modes(struct drm_panel *panel, |
158 | struct drm_connector *connector) |
159 | { |
160 | struct visionox_rm69299 *ctx = panel_to_ctx(panel); |
161 | struct drm_display_mode *mode; |
162 | |
163 | mode = drm_mode_duplicate(dev: connector->dev, |
164 | mode: &visionox_rm69299_1080x2248_60hz); |
165 | if (!mode) { |
166 | dev_err(ctx->panel.dev, "failed to create a new display mode\n" ); |
167 | return 0; |
168 | } |
169 | |
170 | connector->display_info.width_mm = 74; |
171 | connector->display_info.height_mm = 131; |
172 | mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; |
173 | drm_mode_probed_add(connector, mode); |
174 | |
175 | return 1; |
176 | } |
177 | |
178 | static const struct drm_panel_funcs visionox_rm69299_drm_funcs = { |
179 | .unprepare = visionox_rm69299_unprepare, |
180 | .prepare = visionox_rm69299_prepare, |
181 | .get_modes = visionox_rm69299_get_modes, |
182 | }; |
183 | |
184 | static int visionox_rm69299_probe(struct mipi_dsi_device *dsi) |
185 | { |
186 | struct device *dev = &dsi->dev; |
187 | struct visionox_rm69299 *ctx; |
188 | int ret; |
189 | |
190 | ctx = devm_kzalloc(dev, size: sizeof(*ctx), GFP_KERNEL); |
191 | if (!ctx) |
192 | return -ENOMEM; |
193 | |
194 | mipi_dsi_set_drvdata(dsi, data: ctx); |
195 | |
196 | ctx->panel.dev = dev; |
197 | ctx->dsi = dsi; |
198 | |
199 | ctx->supplies[0].supply = "vdda" ; |
200 | ctx->supplies[1].supply = "vdd3p3" ; |
201 | |
202 | ret = devm_regulator_bulk_get(dev: ctx->panel.dev, ARRAY_SIZE(ctx->supplies), |
203 | consumers: ctx->supplies); |
204 | if (ret < 0) |
205 | return ret; |
206 | |
207 | ctx->reset_gpio = devm_gpiod_get(dev: ctx->panel.dev, |
208 | con_id: "reset" , flags: GPIOD_OUT_LOW); |
209 | if (IS_ERR(ptr: ctx->reset_gpio)) { |
210 | dev_err(dev, "cannot get reset gpio %ld\n" , PTR_ERR(ctx->reset_gpio)); |
211 | return PTR_ERR(ptr: ctx->reset_gpio); |
212 | } |
213 | |
214 | drm_panel_init(panel: &ctx->panel, dev, funcs: &visionox_rm69299_drm_funcs, |
215 | DRM_MODE_CONNECTOR_DSI); |
216 | ctx->panel.dev = dev; |
217 | ctx->panel.funcs = &visionox_rm69299_drm_funcs; |
218 | drm_panel_add(panel: &ctx->panel); |
219 | |
220 | dsi->lanes = 4; |
221 | dsi->format = MIPI_DSI_FMT_RGB888; |
222 | dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM | |
223 | MIPI_DSI_CLOCK_NON_CONTINUOUS; |
224 | ret = mipi_dsi_attach(dsi); |
225 | if (ret < 0) { |
226 | dev_err(dev, "dsi attach failed ret = %d\n" , ret); |
227 | goto err_dsi_attach; |
228 | } |
229 | |
230 | ret = regulator_set_load(regulator: ctx->supplies[0].consumer, load_uA: 32000); |
231 | if (ret) { |
232 | dev_err(dev, "regulator set load failed for vdda supply ret = %d\n" , ret); |
233 | goto err_set_load; |
234 | } |
235 | |
236 | ret = regulator_set_load(regulator: ctx->supplies[1].consumer, load_uA: 13200); |
237 | if (ret) { |
238 | dev_err(dev, "regulator set load failed for vdd3p3 supply ret = %d\n" , ret); |
239 | goto err_set_load; |
240 | } |
241 | |
242 | return 0; |
243 | |
244 | err_set_load: |
245 | mipi_dsi_detach(dsi); |
246 | err_dsi_attach: |
247 | drm_panel_remove(panel: &ctx->panel); |
248 | return ret; |
249 | } |
250 | |
251 | static void visionox_rm69299_remove(struct mipi_dsi_device *dsi) |
252 | { |
253 | struct visionox_rm69299 *ctx = mipi_dsi_get_drvdata(dsi); |
254 | |
255 | mipi_dsi_detach(dsi: ctx->dsi); |
256 | drm_panel_remove(panel: &ctx->panel); |
257 | } |
258 | |
259 | static const struct of_device_id visionox_rm69299_of_match[] = { |
260 | { .compatible = "visionox,rm69299-1080p-display" , }, |
261 | { /* sentinel */ } |
262 | }; |
263 | MODULE_DEVICE_TABLE(of, visionox_rm69299_of_match); |
264 | |
265 | static struct mipi_dsi_driver visionox_rm69299_driver = { |
266 | .driver = { |
267 | .name = "panel-visionox-rm69299" , |
268 | .of_match_table = visionox_rm69299_of_match, |
269 | }, |
270 | .probe = visionox_rm69299_probe, |
271 | .remove = visionox_rm69299_remove, |
272 | }; |
273 | module_mipi_dsi_driver(visionox_rm69299_driver); |
274 | |
275 | MODULE_DESCRIPTION("Visionox RM69299 DSI Panel Driver" ); |
276 | MODULE_LICENSE("GPL v2" ); |
277 | |