--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/array_size.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+static const struct regulator_bulk_data lg_ld070wx3_supplies[] = {
+ { .supply = "vdd" }, { .supply = "vcc" },
+};
+
+struct lg_ld070wx3 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+
+ struct regulator_bulk_data *supplies;
+};
+
+static inline struct lg_ld070wx3 *to_lg_ld070wx3(struct drm_panel *panel)
+{
+ return container_of(panel, struct lg_ld070wx3, panel);
+}
+
+static int lg_ld070wx3_prepare(struct drm_panel *panel)
+{
+ struct lg_ld070wx3 *priv = to_lg_ld070wx3(panel);
+ struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };
+ struct device *dev = panel->dev;
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(lg_ld070wx3_supplies), priv->supplies);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable power supplies: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * According to spec delay between enabling supply is 0,
+ * for regulators to reach required voltage ~5ms needed.
+ * MIPI interface signal for setup requires additional
+ * 110ms which in total results in 115ms.
+ */
+ mdelay(115);
+
+ mipi_dsi_dcs_soft_reset_multi(&ctx);
+ mipi_dsi_msleep(&ctx, 20);
+
+ /* Differential input impedance selection */
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xae, 0x0b);
+
+ /* Enter test mode 1 and 2*/
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xee, 0xea);
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xef, 0x5f);
+
+ /* Increased MIPI CLK driving ability */
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xf2, 0x68);
+
+ /* Exit test mode 1 and 2 */
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xee, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&ctx, 0xef, 0x00);
+
+ return ctx.accum_err;
+}
+
+static int lg_ld070wx3_unprepare(struct drm_panel *panel)
+{
+ struct lg_ld070wx3 *priv = to_lg_ld070wx3(panel);
+ struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };
+
+ mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
+
+ msleep(50);
+
+ regulator_bulk_disable(ARRAY_SIZE(lg_ld070wx3_supplies), priv->supplies);
+
+ /* power supply must be off for at least 1s after panel disable */
+ msleep(1000);
+
+ return 0;
+}
+
+static const struct drm_display_mode lg_ld070wx3_mode = {
+ .clock = (800 + 32 + 48 + 8) * (1280 + 5 + 3 + 1) * 60 / 1000,
+ .hdisplay = 800,
+ .hsync_start = 800 + 32,
+ .hsync_end = 800 + 32 + 48,
+ .htotal = 800 + 32 + 48 + 8,
+ .vdisplay = 1280,
+ .vsync_start = 1280 + 5,
+ .vsync_end = 1280 + 5 + 3,
+ .vtotal = 1280 + 5 + 3 + 1,
+ .width_mm = 94,
+ .height_mm = 151,
+ .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static int lg_ld070wx3_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ return drm_connector_helper_get_modes_fixed(connector, &lg_ld070wx3_mode);
+}
+
+static const struct drm_panel_funcs lg_ld070wx3_panel_funcs = {
+ .prepare = lg_ld070wx3_prepare,
+ .unprepare = lg_ld070wx3_unprepare,
+ .get_modes = lg_ld070wx3_get_modes,
+};
+
+static int lg_ld070wx3_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct lg_ld070wx3 *priv;
+ int ret;
+
+ priv = devm_drm_panel_alloc(dev, struct lg_ld070wx3, panel,
+ &lg_ld070wx3_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ if (IS_ERR(priv))
+ return PTR_ERR(priv);
+
+ ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(lg_ld070wx3_supplies),
+ lg_ld070wx3_supplies, &priv->supplies);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to get supplies\n");
+
+ priv->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, priv);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;
+
+ ret = drm_panel_of_backlight(&priv->panel);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to get backlight\n");
+
+ drm_panel_add(&priv->panel);
+
+ ret = devm_mipi_dsi_attach(dev, dsi);
+ if (ret < 0) {
+ drm_panel_remove(&priv->panel);
+ return dev_err_probe(dev, ret, "failed to attach to DSI host\n");
+ }
+
+ return 0;
+}
+
+static void lg_ld070wx3_remove(struct mipi_dsi_device *dsi)
+{
+ struct lg_ld070wx3 *priv = mipi_dsi_get_drvdata(dsi);
+
+ drm_panel_remove(&priv->panel);
+}
+
+static const struct of_device_id lg_ld070wx3_of_match[] = {
+ { .compatible = "lg,ld070wx3-sl01" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, lg_ld070wx3_of_match);
+
+static struct mipi_dsi_driver lg_ld070wx3_driver = {
+ .driver = {
+ .name = "panel-lg-ld070wx3",
+ .of_match_table = lg_ld070wx3_of_match,
+ },
+ .probe = lg_ld070wx3_probe,
+ .remove = lg_ld070wx3_remove,
+};
+module_mipi_dsi_driver(lg_ld070wx3_driver);
+
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("LG LD070WX3-SL01 DSI panel driver");
+MODULE_LICENSE("GPL");
.lanes = 4,
};
-static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
- .clock = 71000,
- .hdisplay = 800,
- .hsync_start = 800 + 32,
- .hsync_end = 800 + 32 + 1,
- .htotal = 800 + 32 + 1 + 57,
- .vdisplay = 1280,
- .vsync_start = 1280 + 28,
- .vsync_end = 1280 + 28 + 1,
- .vtotal = 1280 + 28 + 1 + 14,
-};
-
-static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
- .desc = {
- .modes = &lg_ld070wx3_sl01_mode,
- .num_modes = 1,
- .bpc = 8,
- .size = {
- .width = 94,
- .height = 151,
- },
- .connector_type = DRM_MODE_CONNECTOR_DSI,
- },
- .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS,
- .format = MIPI_DSI_FMT_RGB888,
- .lanes = 4,
-};
-
static const struct drm_display_mode lg_lh500wx1_sd03_mode = {
.clock = 67000,
.hdisplay = 720,
}, {
.compatible = "boe,tv080wum-nl0",
.data = &boe_tv080wum_nl0
- }, {
- .compatible = "lg,ld070wx3-sl01",
- .data = &lg_ld070wx3_sl01
}, {
.compatible = "lg,lh500wx1-sd03",
.data = &lg_lh500wx1_sd03
gentwo / linux / .git / commitdiff