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/regulator/consumer.h>
14 #include <video/mipi_display.h>
16 #include <drm/drm_mipi_dsi.h>
17 #include <drm/drm_modes.h>
18 #include <drm/drm_panel.h>
20 #define DRV_NAME "panel-mantix-mlaf057we51"
22 /* Manufacturer specific Commands send via DSI */
23 #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
24 #define MANTIX_CMD_INT_CANCEL 0x4C
25 #define MANTIX_CMD_SPI_FINISH 0x90
29 struct drm_panel panel;
31 struct gpio_desc *reset_gpio;
32 struct gpio_desc *tp_rstn_gpio;
34 struct regulator *avdd;
35 struct regulator *avee;
36 struct regulator *vddi;
39 static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
41 return container_of(panel, struct mantix, panel);
44 #define dsi_generic_write_seq(dsi, seq...) do { \
45 static const u8 d[] = { seq }; \
47 ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
52 static int mantix_init_sequence(struct mantix *ctx)
54 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
55 struct device *dev = ctx->dev;
58 * Init sequence was supplied by the panel vendor.
60 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
62 dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
63 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
64 dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
66 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
67 dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
70 dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5);
71 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F);
74 dev_dbg(dev, "Panel init sequence done\n");
78 static int mantix_enable(struct drm_panel *panel)
80 struct mantix *ctx = panel_to_mantix(panel);
81 struct device *dev = ctx->dev;
82 struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
85 ret = mantix_init_sequence(ctx);
87 dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
91 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
93 dev_err(dev, "Failed to exit sleep mode\n");
98 ret = mipi_dsi_dcs_set_display_on(dsi);
101 usleep_range(10000, 12000);
103 ret = mipi_dsi_turn_on_peripheral(dsi);
105 dev_err(dev, "Failed to turn on peripheral\n");
112 static int mantix_disable(struct drm_panel *panel)
114 struct mantix *ctx = panel_to_mantix(panel);
115 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
118 ret = mipi_dsi_dcs_set_display_off(dsi);
120 dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
122 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
124 dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
130 static int mantix_unprepare(struct drm_panel *panel)
132 struct mantix *ctx = panel_to_mantix(panel);
134 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);
135 usleep_range(5000, 6000);
136 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
138 regulator_disable(ctx->avee);
139 regulator_disable(ctx->avdd);
141 usleep_range(5000, 6000);
142 regulator_disable(ctx->vddi);
149 static int mantix_prepare(struct drm_panel *panel)
151 struct mantix *ctx = panel_to_mantix(panel);
154 /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
155 dev_dbg(ctx->dev, "Resetting the panel\n");
156 ret = regulator_enable(ctx->vddi);
158 dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
163 usleep_range(8000, 10000);
165 ret = regulator_enable(ctx->avdd);
167 dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
172 usleep_range(3500, 4000);
173 ret = regulator_enable(ctx->avee);
175 dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
179 /* T3 + T4 + time for voltage to become stable: */
180 usleep_range(6000, 7000);
181 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
182 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);
190 static const struct drm_display_mode default_mode = {
192 .hsync_start = 720 + 45,
193 .hsync_end = 720 + 45 + 14,
194 .htotal = 720 + 45 + 14 + 25,
196 .vsync_start = 1440 + 130,
197 .vsync_end = 1440 + 130 + 8,
198 .vtotal = 1440 + 130 + 8 + 106,
200 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
205 static int mantix_get_modes(struct drm_panel *panel,
206 struct drm_connector *connector)
208 struct mantix *ctx = panel_to_mantix(panel);
209 struct drm_display_mode *mode;
211 mode = drm_mode_duplicate(connector->dev, &default_mode);
213 dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
214 default_mode.hdisplay, default_mode.vdisplay,
215 drm_mode_vrefresh(&default_mode));
219 drm_mode_set_name(mode);
221 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
222 connector->display_info.width_mm = mode->width_mm;
223 connector->display_info.height_mm = mode->height_mm;
224 drm_mode_probed_add(connector, mode);
229 static const struct drm_panel_funcs mantix_drm_funcs = {
230 .disable = mantix_disable,
231 .unprepare = mantix_unprepare,
232 .prepare = mantix_prepare,
233 .enable = mantix_enable,
234 .get_modes = mantix_get_modes,
237 static int mantix_probe(struct mipi_dsi_device *dsi)
239 struct device *dev = &dsi->dev;
243 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
247 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
248 if (IS_ERR(ctx->reset_gpio)) {
249 dev_err(dev, "cannot get reset gpio\n");
250 return PTR_ERR(ctx->reset_gpio);
253 ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);
254 if (IS_ERR(ctx->tp_rstn_gpio)) {
255 dev_err(dev, "cannot get tp-rstn gpio\n");
256 return PTR_ERR(ctx->tp_rstn_gpio);
259 mipi_dsi_set_drvdata(dsi, ctx);
263 dsi->format = MIPI_DSI_FMT_RGB888;
264 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
265 MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
267 ctx->avdd = devm_regulator_get(dev, "avdd");
268 if (IS_ERR(ctx->avdd))
269 return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
271 ctx->avee = devm_regulator_get(dev, "avee");
272 if (IS_ERR(ctx->avee))
273 return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
275 ctx->vddi = devm_regulator_get(dev, "vddi");
276 if (IS_ERR(ctx->vddi))
277 return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
279 drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,
280 DRM_MODE_CONNECTOR_DSI);
282 ret = drm_panel_of_backlight(&ctx->panel);
286 drm_panel_add(&ctx->panel);
288 ret = mipi_dsi_attach(dsi);
290 dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
291 drm_panel_remove(&ctx->panel);
295 dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
296 default_mode.hdisplay, default_mode.vdisplay,
297 drm_mode_vrefresh(&default_mode),
298 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
303 static void mantix_shutdown(struct mipi_dsi_device *dsi)
305 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
307 drm_panel_unprepare(&ctx->panel);
308 drm_panel_disable(&ctx->panel);
311 static int mantix_remove(struct mipi_dsi_device *dsi)
313 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
315 mantix_shutdown(dsi);
317 mipi_dsi_detach(dsi);
318 drm_panel_remove(&ctx->panel);
323 static const struct of_device_id mantix_of_match[] = {
324 { .compatible = "mantix,mlaf057we51-x" },
327 MODULE_DEVICE_TABLE(of, mantix_of_match);
329 static struct mipi_dsi_driver mantix_driver = {
330 .probe = mantix_probe,
331 .remove = mantix_remove,
332 .shutdown = mantix_shutdown,
335 .of_match_table = mantix_of_match,
338 module_mipi_dsi_driver(mantix_driver);
340 MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
341 MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
342 MODULE_LICENSE("GPL v2");