1 // SPDX-License-Identifier: GPL-2.0
3 * Mantix MLAF057WE51 5.7" MIPI-DSI panel driver
5 * Copyright (C) Purism SPC 2020
8 #include <linux/backlight.h>
9 #include <linux/delay.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/module.h>
12 #include <linux/of_device.h>
13 #include <linux/regulator/consumer.h>
15 #include <video/mipi_display.h>
17 #include <drm/drm_mipi_dsi.h>
18 #include <drm/drm_modes.h>
19 #include <drm/drm_panel.h>
21 #define DRV_NAME "panel-mantix-mlaf057we51"
23 /* Manufacturer specific Commands send via DSI */
24 #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
25 #define MANTIX_CMD_INT_CANCEL 0x4C
26 #define MANTIX_CMD_SPI_FINISH 0x90
30 struct drm_panel panel;
32 struct gpio_desc *reset_gpio;
33 struct gpio_desc *tp_rstn_gpio;
35 struct regulator *avdd;
36 struct regulator *avee;
37 struct regulator *vddi;
39 const struct drm_display_mode *default_mode;
42 static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
44 return container_of(panel, struct mantix, panel);
47 #define dsi_generic_write_seq(dsi, seq...) do { \
48 static const u8 d[] = { seq }; \
50 ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
55 static int mantix_init_sequence(struct mantix *ctx)
57 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
58 struct device *dev = ctx->dev;
61 * Init sequence was supplied by the panel vendor.
63 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
65 dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
66 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
67 dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
69 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
70 dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
73 dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5);
74 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F);
77 dev_dbg(dev, "Panel init sequence done\n");
81 static int mantix_enable(struct drm_panel *panel)
83 struct mantix *ctx = panel_to_mantix(panel);
84 struct device *dev = ctx->dev;
85 struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
88 ret = mantix_init_sequence(ctx);
90 dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
94 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
96 dev_err(dev, "Failed to exit sleep mode\n");
101 ret = mipi_dsi_dcs_set_display_on(dsi);
104 usleep_range(10000, 12000);
106 ret = mipi_dsi_turn_on_peripheral(dsi);
108 dev_err(dev, "Failed to turn on peripheral\n");
115 static int mantix_disable(struct drm_panel *panel)
117 struct mantix *ctx = panel_to_mantix(panel);
118 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
121 ret = mipi_dsi_dcs_set_display_off(dsi);
123 dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
125 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
127 dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
133 static int mantix_unprepare(struct drm_panel *panel)
135 struct mantix *ctx = panel_to_mantix(panel);
137 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);
138 usleep_range(5000, 6000);
139 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
141 regulator_disable(ctx->avee);
142 regulator_disable(ctx->avdd);
144 usleep_range(5000, 6000);
145 regulator_disable(ctx->vddi);
152 static int mantix_prepare(struct drm_panel *panel)
154 struct mantix *ctx = panel_to_mantix(panel);
157 /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
158 dev_dbg(ctx->dev, "Resetting the panel\n");
159 ret = regulator_enable(ctx->vddi);
161 dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
166 usleep_range(8000, 10000);
168 ret = regulator_enable(ctx->avdd);
170 dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
175 usleep_range(3500, 4000);
176 ret = regulator_enable(ctx->avee);
178 dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
182 /* T3 + T4 + time for voltage to become stable: */
183 usleep_range(6000, 7000);
184 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
185 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);
193 static const struct drm_display_mode default_mode_mantix = {
195 .hsync_start = 720 + 45,
196 .hsync_end = 720 + 45 + 14,
197 .htotal = 720 + 45 + 14 + 25,
199 .vsync_start = 1440 + 130,
200 .vsync_end = 1440 + 130 + 8,
201 .vtotal = 1440 + 130 + 8 + 106,
203 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
208 static const struct drm_display_mode default_mode_ys = {
210 .hsync_start = 720 + 45,
211 .hsync_end = 720 + 45 + 14,
212 .htotal = 720 + 45 + 14 + 25,
214 .vsync_start = 1440 + 175,
215 .vsync_end = 1440 + 175 + 8,
216 .vtotal = 1440 + 175 + 8 + 50,
218 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
223 static int mantix_get_modes(struct drm_panel *panel,
224 struct drm_connector *connector)
226 struct mantix *ctx = panel_to_mantix(panel);
227 struct drm_display_mode *mode;
229 mode = drm_mode_duplicate(connector->dev, ctx->default_mode);
231 dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
232 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
233 drm_mode_vrefresh(ctx->default_mode));
237 drm_mode_set_name(mode);
239 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
240 connector->display_info.width_mm = mode->width_mm;
241 connector->display_info.height_mm = mode->height_mm;
242 drm_mode_probed_add(connector, mode);
247 static const struct drm_panel_funcs mantix_drm_funcs = {
248 .disable = mantix_disable,
249 .unprepare = mantix_unprepare,
250 .prepare = mantix_prepare,
251 .enable = mantix_enable,
252 .get_modes = mantix_get_modes,
255 static int mantix_probe(struct mipi_dsi_device *dsi)
257 struct device *dev = &dsi->dev;
261 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
264 ctx->default_mode = of_device_get_match_data(dev);
266 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
267 if (IS_ERR(ctx->reset_gpio)) {
268 dev_err(dev, "cannot get reset gpio\n");
269 return PTR_ERR(ctx->reset_gpio);
272 ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);
273 if (IS_ERR(ctx->tp_rstn_gpio)) {
274 dev_err(dev, "cannot get tp-rstn gpio\n");
275 return PTR_ERR(ctx->tp_rstn_gpio);
278 mipi_dsi_set_drvdata(dsi, ctx);
282 dsi->format = MIPI_DSI_FMT_RGB888;
283 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
284 MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
286 ctx->avdd = devm_regulator_get(dev, "avdd");
287 if (IS_ERR(ctx->avdd))
288 return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
290 ctx->avee = devm_regulator_get(dev, "avee");
291 if (IS_ERR(ctx->avee))
292 return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
294 ctx->vddi = devm_regulator_get(dev, "vddi");
295 if (IS_ERR(ctx->vddi))
296 return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
298 drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,
299 DRM_MODE_CONNECTOR_DSI);
301 ret = drm_panel_of_backlight(&ctx->panel);
305 drm_panel_add(&ctx->panel);
307 ret = mipi_dsi_attach(dsi);
309 dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
310 drm_panel_remove(&ctx->panel);
314 dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
315 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
316 drm_mode_vrefresh(ctx->default_mode),
317 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
322 static void mantix_shutdown(struct mipi_dsi_device *dsi)
324 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
326 drm_panel_unprepare(&ctx->panel);
327 drm_panel_disable(&ctx->panel);
330 static int mantix_remove(struct mipi_dsi_device *dsi)
332 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
334 mantix_shutdown(dsi);
336 mipi_dsi_detach(dsi);
337 drm_panel_remove(&ctx->panel);
342 static const struct of_device_id mantix_of_match[] = {
343 { .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix },
344 { .compatible = "ys,ys57pss36bh5gq", .data = &default_mode_ys },
347 MODULE_DEVICE_TABLE(of, mantix_of_match);
349 static struct mipi_dsi_driver mantix_driver = {
350 .probe = mantix_probe,
351 .remove = mantix_remove,
352 .shutdown = mantix_shutdown,
355 .of_match_table = mantix_of_match,
358 module_mipi_dsi_driver(mantix_driver);
361 MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
362 MODULE_LICENSE("GPL v2");