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/media-bus-format.h>
12 #include <linux/module.h>
13 #include <linux/of_device.h>
14 #include <linux/regulator/consumer.h>
16 #include <video/mipi_display.h>
18 #include <drm/drm_mipi_dsi.h>
19 #include <drm/drm_modes.h>
20 #include <drm/drm_panel.h>
22 #define DRV_NAME "panel-mantix-mlaf057we51"
24 /* Manufacturer specific Commands send via DSI */
25 #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
26 #define MANTIX_CMD_INT_CANCEL 0x4C
27 #define MANTIX_CMD_SPI_FINISH 0x90
31 struct drm_panel panel;
33 struct gpio_desc *reset_gpio;
34 struct gpio_desc *tp_rstn_gpio;
36 struct regulator *avdd;
37 struct regulator *avee;
38 struct regulator *vddi;
40 const struct drm_display_mode *default_mode;
43 static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
45 return container_of(panel, struct mantix, panel);
48 #define dsi_generic_write_seq(dsi, seq...) do { \
49 static const u8 d[] = { seq }; \
51 ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
56 static int mantix_init_sequence(struct mantix *ctx)
58 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
59 struct device *dev = ctx->dev;
62 * Init sequence was supplied by the panel vendor.
64 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
66 dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
67 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
68 dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
70 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
71 dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
74 dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5);
75 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F);
78 dev_dbg(dev, "Panel init sequence done\n");
82 static int mantix_enable(struct drm_panel *panel)
84 struct mantix *ctx = panel_to_mantix(panel);
85 struct device *dev = ctx->dev;
86 struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
89 ret = mantix_init_sequence(ctx);
91 dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
95 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
97 dev_err(dev, "Failed to exit sleep mode\n");
102 ret = mipi_dsi_dcs_set_display_on(dsi);
105 usleep_range(10000, 12000);
107 ret = mipi_dsi_turn_on_peripheral(dsi);
109 dev_err(dev, "Failed to turn on peripheral\n");
116 static int mantix_disable(struct drm_panel *panel)
118 struct mantix *ctx = panel_to_mantix(panel);
119 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
122 ret = mipi_dsi_dcs_set_display_off(dsi);
124 dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
126 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
128 dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
134 static int mantix_unprepare(struct drm_panel *panel)
136 struct mantix *ctx = panel_to_mantix(panel);
138 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);
139 usleep_range(5000, 6000);
140 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
142 regulator_disable(ctx->avee);
143 regulator_disable(ctx->avdd);
145 usleep_range(5000, 6000);
146 regulator_disable(ctx->vddi);
153 static int mantix_prepare(struct drm_panel *panel)
155 struct mantix *ctx = panel_to_mantix(panel);
158 /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
159 dev_dbg(ctx->dev, "Resetting the panel\n");
160 ret = regulator_enable(ctx->vddi);
162 dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
167 usleep_range(8000, 10000);
169 ret = regulator_enable(ctx->avdd);
171 dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
176 usleep_range(3500, 4000);
177 ret = regulator_enable(ctx->avee);
179 dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
183 /* T3 + T4 + time for voltage to become stable: */
184 usleep_range(6000, 7000);
185 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
186 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);
194 static const struct drm_display_mode default_mode_mantix = {
196 .hsync_start = 720 + 45,
197 .hsync_end = 720 + 45 + 14,
198 .htotal = 720 + 45 + 14 + 25,
200 .vsync_start = 1440 + 130,
201 .vsync_end = 1440 + 130 + 8,
202 .vtotal = 1440 + 130 + 8 + 106,
204 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
209 static const struct drm_display_mode default_mode_ys = {
211 .hsync_start = 720 + 45,
212 .hsync_end = 720 + 45 + 14,
213 .htotal = 720 + 45 + 14 + 25,
215 .vsync_start = 1440 + 175,
216 .vsync_end = 1440 + 175 + 8,
217 .vtotal = 1440 + 175 + 8 + 50,
219 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
224 static const u32 mantix_bus_formats[] = {
225 MEDIA_BUS_FMT_RGB888_1X24,
228 static int mantix_get_modes(struct drm_panel *panel,
229 struct drm_connector *connector)
231 struct mantix *ctx = panel_to_mantix(panel);
232 struct drm_display_mode *mode;
234 mode = drm_mode_duplicate(connector->dev, ctx->default_mode);
236 dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
237 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
238 drm_mode_vrefresh(ctx->default_mode));
242 drm_mode_set_name(mode);
244 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
245 connector->display_info.width_mm = mode->width_mm;
246 connector->display_info.height_mm = mode->height_mm;
247 drm_mode_probed_add(connector, mode);
249 drm_display_info_set_bus_formats(&connector->display_info,
251 ARRAY_SIZE(mantix_bus_formats));
256 static const struct drm_panel_funcs mantix_drm_funcs = {
257 .disable = mantix_disable,
258 .unprepare = mantix_unprepare,
259 .prepare = mantix_prepare,
260 .enable = mantix_enable,
261 .get_modes = mantix_get_modes,
264 static int mantix_probe(struct mipi_dsi_device *dsi)
266 struct device *dev = &dsi->dev;
270 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
273 ctx->default_mode = of_device_get_match_data(dev);
275 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
276 if (IS_ERR(ctx->reset_gpio)) {
277 dev_err(dev, "cannot get reset gpio\n");
278 return PTR_ERR(ctx->reset_gpio);
281 ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);
282 if (IS_ERR(ctx->tp_rstn_gpio)) {
283 dev_err(dev, "cannot get tp-rstn gpio\n");
284 return PTR_ERR(ctx->tp_rstn_gpio);
287 mipi_dsi_set_drvdata(dsi, ctx);
291 dsi->format = MIPI_DSI_FMT_RGB888;
292 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
293 MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
295 ctx->avdd = devm_regulator_get(dev, "avdd");
296 if (IS_ERR(ctx->avdd))
297 return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
299 ctx->avee = devm_regulator_get(dev, "avee");
300 if (IS_ERR(ctx->avee))
301 return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
303 ctx->vddi = devm_regulator_get(dev, "vddi");
304 if (IS_ERR(ctx->vddi))
305 return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
307 drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,
308 DRM_MODE_CONNECTOR_DSI);
310 ret = drm_panel_of_backlight(&ctx->panel);
314 drm_panel_add(&ctx->panel);
316 ret = mipi_dsi_attach(dsi);
318 dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
319 drm_panel_remove(&ctx->panel);
323 dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
324 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
325 drm_mode_vrefresh(ctx->default_mode),
326 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
331 static void mantix_shutdown(struct mipi_dsi_device *dsi)
333 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
335 drm_panel_unprepare(&ctx->panel);
336 drm_panel_disable(&ctx->panel);
339 static int mantix_remove(struct mipi_dsi_device *dsi)
341 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
343 mantix_shutdown(dsi);
345 mipi_dsi_detach(dsi);
346 drm_panel_remove(&ctx->panel);
351 static const struct of_device_id mantix_of_match[] = {
352 { .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix },
353 { .compatible = "ys,ys57pss36bh5gq", .data = &default_mode_ys },
356 MODULE_DEVICE_TABLE(of, mantix_of_match);
358 static struct mipi_dsi_driver mantix_driver = {
359 .probe = mantix_probe,
360 .remove = mantix_remove,
361 .shutdown = mantix_shutdown,
364 .of_match_table = mantix_of_match,
367 module_mipi_dsi_driver(mantix_driver);
370 MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
371 MODULE_LICENSE("GPL v2");