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
28 struct drm_panel panel;
30 struct gpio_desc *reset_gpio;
31 struct gpio_desc *tp_rstn_gpio;
33 struct regulator *avdd;
34 struct regulator *avee;
35 struct regulator *vddi;
38 static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
40 return container_of(panel, struct mantix, panel);
43 #define dsi_generic_write_seq(dsi, seq...) do { \
44 static const u8 d[] = { seq }; \
46 ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
51 static int mantix_init_sequence(struct mantix *ctx)
53 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
54 struct device *dev = ctx->dev;
57 * Init sequence was supplied by the panel vendor.
59 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
61 dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
62 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
63 dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
65 dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
66 dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
69 dev_dbg(dev, "Panel init sequence done\n");
73 static int mantix_enable(struct drm_panel *panel)
75 struct mantix *ctx = panel_to_mantix(panel);
76 struct device *dev = ctx->dev;
77 struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
80 ret = mantix_init_sequence(ctx);
82 dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
86 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
88 dev_err(dev, "Failed to exit sleep mode\n");
93 ret = mipi_dsi_dcs_set_display_on(dsi);
96 usleep_range(10000, 12000);
98 ret = mipi_dsi_turn_on_peripheral(dsi);
100 dev_err(dev, "Failed to turn on peripheral\n");
107 static int mantix_disable(struct drm_panel *panel)
109 struct mantix *ctx = panel_to_mantix(panel);
110 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
113 ret = mipi_dsi_dcs_set_display_off(dsi);
115 dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
117 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
119 dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
125 static int mantix_unprepare(struct drm_panel *panel)
127 struct mantix *ctx = panel_to_mantix(panel);
129 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);
130 usleep_range(5000, 6000);
131 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
133 regulator_disable(ctx->avee);
134 regulator_disable(ctx->avdd);
136 usleep_range(5000, 6000);
137 regulator_disable(ctx->vddi);
144 static int mantix_prepare(struct drm_panel *panel)
146 struct mantix *ctx = panel_to_mantix(panel);
149 /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
150 dev_dbg(ctx->dev, "Resetting the panel\n");
151 ret = regulator_enable(ctx->vddi);
153 dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
158 usleep_range(8000, 10000);
160 ret = regulator_enable(ctx->avdd);
162 dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
167 usleep_range(3500, 4000);
168 ret = regulator_enable(ctx->avee);
170 dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
174 /* T3 + T4 + time for voltage to become stable: */
175 usleep_range(6000, 7000);
176 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
177 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);
185 static const struct drm_display_mode default_mode = {
187 .hsync_start = 720 + 45,
188 .hsync_end = 720 + 45 + 14,
189 .htotal = 720 + 45 + 14 + 25,
191 .vsync_start = 1440 + 130,
192 .vsync_end = 1440 + 130 + 8,
193 .vtotal = 1440 + 130 + 8 + 106,
195 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
200 static int mantix_get_modes(struct drm_panel *panel,
201 struct drm_connector *connector)
203 struct mantix *ctx = panel_to_mantix(panel);
204 struct drm_display_mode *mode;
206 mode = drm_mode_duplicate(connector->dev, &default_mode);
208 dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
209 default_mode.hdisplay, default_mode.vdisplay,
210 drm_mode_vrefresh(&default_mode));
214 drm_mode_set_name(mode);
216 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
217 connector->display_info.width_mm = mode->width_mm;
218 connector->display_info.height_mm = mode->height_mm;
219 drm_mode_probed_add(connector, mode);
224 static const struct drm_panel_funcs mantix_drm_funcs = {
225 .disable = mantix_disable,
226 .unprepare = mantix_unprepare,
227 .prepare = mantix_prepare,
228 .enable = mantix_enable,
229 .get_modes = mantix_get_modes,
232 static int mantix_probe(struct mipi_dsi_device *dsi)
234 struct device *dev = &dsi->dev;
238 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
242 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
243 if (IS_ERR(ctx->reset_gpio)) {
244 dev_err(dev, "cannot get reset gpio\n");
245 return PTR_ERR(ctx->reset_gpio);
248 ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);
249 if (IS_ERR(ctx->tp_rstn_gpio)) {
250 dev_err(dev, "cannot get tp-rstn gpio\n");
251 return PTR_ERR(ctx->tp_rstn_gpio);
254 mipi_dsi_set_drvdata(dsi, ctx);
258 dsi->format = MIPI_DSI_FMT_RGB888;
259 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
260 MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
262 ctx->avdd = devm_regulator_get(dev, "avdd");
263 if (IS_ERR(ctx->avdd))
264 return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
266 ctx->avee = devm_regulator_get(dev, "avee");
267 if (IS_ERR(ctx->avee))
268 return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
270 ctx->vddi = devm_regulator_get(dev, "vddi");
271 if (IS_ERR(ctx->vddi))
272 return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
274 drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,
275 DRM_MODE_CONNECTOR_DSI);
277 ret = drm_panel_of_backlight(&ctx->panel);
281 drm_panel_add(&ctx->panel);
283 ret = mipi_dsi_attach(dsi);
285 dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
286 drm_panel_remove(&ctx->panel);
290 dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
291 default_mode.hdisplay, default_mode.vdisplay,
292 drm_mode_vrefresh(&default_mode),
293 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
298 static void mantix_shutdown(struct mipi_dsi_device *dsi)
300 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
302 drm_panel_unprepare(&ctx->panel);
303 drm_panel_disable(&ctx->panel);
306 static int mantix_remove(struct mipi_dsi_device *dsi)
308 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
310 mantix_shutdown(dsi);
312 mipi_dsi_detach(dsi);
313 drm_panel_remove(&ctx->panel);
318 static const struct of_device_id mantix_of_match[] = {
319 { .compatible = "mantix,mlaf057we51-x" },
322 MODULE_DEVICE_TABLE(of, mantix_of_match);
324 static struct mipi_dsi_driver mantix_driver = {
325 .probe = mantix_probe,
326 .remove = mantix_remove,
327 .shutdown = mantix_shutdown,
330 .of_match_table = mantix_of_match,
333 module_mipi_dsi_driver(mantix_driver);
336 MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
337 MODULE_LICENSE("GPL v2");