--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Synaptics R63353 Controller driver
+ *
+ * Copyright (C) 2020 BSH Hausgerate GmbH
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/media-bus-format.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+#define R63353_INSTR(...) { \
+ .len = sizeof((u8[]) {__VA_ARGS__}), \
+ .data = (u8[]){__VA_ARGS__} \
+ }
+
+struct r63353_instr {
+ size_t len;
+ const u8 *data;
+};
+
+static const struct r63353_instr sharp_ls068b3sx02_init[] = {
+ R63353_INSTR(0x51, 0xff),
+ R63353_INSTR(0x53, 0x0c),
+ R63353_INSTR(0x55, 0x00),
+ R63353_INSTR(0x84, 0x00),
+ R63353_INSTR(0x29),
+};
+
+struct r63353_desc {
+ const char *name;
+ const struct r63353_instr *init;
+ const size_t init_length;
+ const struct drm_display_mode *mode;
+ u32 width_mm;
+ u32 height_mm;
+};
+
+struct r63353_panel {
+ struct drm_panel base;
+ struct mipi_dsi_device *dsi;
+
+ struct gpio_desc *reset_gpio;
+ struct regulator *dvdd;
+ struct regulator *avdd;
+
+ struct r63353_desc *pdata;
+};
+
+static inline struct r63353_panel *to_r63353_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct r63353_panel, base);
+}
+
+static int r63353_panel_power_on(struct r63353_panel *rpanel)
+{
+ struct mipi_dsi_device *dsi = rpanel->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = regulator_enable(rpanel->avdd);
+ if (ret) {
+ dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
+ return ret;
+ }
+
+ usleep_range(15000, 25000);
+
+ ret = regulator_enable(rpanel->dvdd);
+ if (ret) {
+ dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
+ regulator_disable(rpanel->avdd);
+ return ret;
+ }
+
+ usleep_range(300000, 350000);
+ gpiod_set_value(rpanel->reset_gpio, 1);
+ usleep_range(15000, 25000);
+
+ return 0;
+}
+
+static int r63353_panel_power_off(struct r63353_panel *rpanel)
+{
+ gpiod_set_value(rpanel->reset_gpio, 0);
+ regulator_disable(rpanel->dvdd);
+ regulator_disable(rpanel->avdd);
+
+ return 0;
+}
+
+static int r63353_panel_activate(struct r63353_panel *rpanel)
+{
+ struct mipi_dsi_device *dsi = rpanel->dsi;
+ struct device *dev = &dsi->dev;
+ int i, ret;
+
+ ret = mipi_dsi_dcs_soft_reset(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to do Software Reset (%d)\n", ret);
+ goto fail;
+ }
+
+ usleep_range(15000, 17000);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+ goto fail;
+ }
+
+ for (i = 0; i < rpanel->pdata->init_length; i++) {
+ const struct r63353_instr *instr = &rpanel->pdata->init[i];
+
+ ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len);
+ if (ret < 0)
+ goto fail;
+ }
+
+ msleep(120);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
+ goto fail;
+ }
+
+ usleep_range(5000, 10000);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display ON (%d)\n", ret);
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ gpiod_set_value(rpanel->reset_gpio, 0);
+
+ return ret;
+}
+
+static int r63353_panel_prepare(struct drm_panel *panel)
+{
+ struct r63353_panel *rpanel = to_r63353_panel(panel);
+ struct mipi_dsi_device *dsi = rpanel->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dev_dbg(dev, "Preparing\n");
+
+ ret = r63353_panel_power_on(rpanel);
+ if (ret)
+ return ret;
+
+ ret = r63353_panel_activate(rpanel);
+ if (ret) {
+ r63353_panel_power_off(rpanel);
+ return ret;
+ }
+
+ dev_dbg(dev, "Prepared\n");
+ return 0;
+}
+
+static int r63353_panel_deactivate(struct r63353_panel *rpanel)
+{
+ struct mipi_dsi_device *dsi = rpanel->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display OFF (%d)\n", ret);
+ return ret;
+ }
+
+ usleep_range(5000, 10000);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int r63353_panel_unprepare(struct drm_panel *panel)
+{
+ struct r63353_panel *rpanel = to_r63353_panel(panel);
+
+ r63353_panel_deactivate(rpanel);
+ r63353_panel_power_off(rpanel);
+
+ return 0;
+}
+
+static const struct drm_display_mode sharp_ls068b3sx02_timing = {
+ .clock = 70000,
+ .hdisplay = 640,
+ .hsync_start = 640 + 35,
+ .hsync_end = 640 + 35 + 2,
+ .htotal = 640 + 35 + 2 + 150,
+ .vdisplay = 1280,
+ .vsync_start = 1280 + 2,
+ .vsync_end = 1280 + 2 + 4,
+ .vtotal = 1280 + 2 + 4 + 0,
+};
+
+static int r63353_panel_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct r63353_panel *rpanel = to_r63353_panel(panel);
+ struct drm_display_mode *mode;
+ static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+
+ mode = drm_mode_duplicate(connector->dev, rpanel->pdata->mode);
+ if (!mode)
+ return -ENOMEM;
+
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ connector->display_info.width_mm = rpanel->pdata->width_mm;
+ connector->display_info.height_mm = rpanel->pdata->height_mm;
+
+ drm_display_info_set_bus_formats(&connector->display_info,
+ &bus_format, 1);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs r63353_panel_funcs = {
+ .prepare = r63353_panel_prepare,
+ .unprepare = r63353_panel_unprepare,
+ .get_modes = r63353_panel_get_modes,
+};
+
+static int r63353_panel_probe(struct mipi_dsi_device *dsi)
+{
+ int ret = 0;
+ struct device *dev = &dsi->dev;
+ struct r63353_panel *panel;
+
+ panel = devm_kzalloc(&dsi->dev, sizeof(*panel), GFP_KERNEL);
+ if (!panel)
+ return -ENOMEM;
+
+ mipi_dsi_set_drvdata(dsi, panel);
+ panel->dsi = dsi;
+ panel->pdata = (struct r63353_desc *)of_device_get_match_data(dev);
+
+ dev_info(dev, "Panel %s\n", panel->pdata->name);
+
+ dsi->lanes = 2;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
+ MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_NO_EOT_PACKET;
+
+ panel->dvdd = devm_regulator_get(dev, "dvdd");
+ if (IS_ERR(panel->dvdd))
+ return PTR_ERR(panel->dvdd);
+ panel->avdd = devm_regulator_get(dev, "avdd");
+ if (IS_ERR(panel->avdd))
+ return PTR_ERR(panel->avdd);
+
+ panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(panel->reset_gpio)) {
+ dev_err(dev, "failed to get RESET GPIO\n");
+ return PTR_ERR(panel->reset_gpio);
+ }
+
+ drm_panel_init(&panel->base, dev, &r63353_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ panel->base.prepare_prev_first = true;
+ ret = drm_panel_of_backlight(&panel->base);
+ if (ret)
+ return ret;
+
+ drm_panel_add(&panel->base);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
+ drm_panel_remove(&panel->base);
+ return ret;
+ }
+
+ return ret;
+}
+
+static void r63353_panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(dev, "Failed to detach from host (%d)\n", ret);
+
+ drm_panel_remove(&rpanel->base);
+}
+
+static void r63353_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
+
+ r63353_panel_unprepare(&rpanel->base);
+}
+
+static const struct r63353_desc sharp_ls068b3sx02_data = {
+ .name = "Sharp LS068B3SX02",
+ .mode = &sharp_ls068b3sx02_timing,
+ .init = sharp_ls068b3sx02_init,
+ .init_length = ARRAY_SIZE(sharp_ls068b3sx02_init),
+ .width_mm = 68,
+ .height_mm = 159,
+};
+
+static const struct of_device_id r63353_of_match[] = {
+ { .compatible = "sharp,ls068b3sx02", .data = &sharp_ls068b3sx02_data },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, r63353_of_match);
+
+static struct mipi_dsi_driver r63353_panel_driver = {
+ .driver = {
+ .name = "r63353-dsi",
+ .of_match_table = r63353_of_match,
+ },
+ .probe = r63353_panel_probe,
+ .remove = r63353_panel_remove,
+ .shutdown = r63353_panel_shutdown,
+};
+
+module_mipi_dsi_driver(r63353_panel_driver);
+
+MODULE_AUTHOR("Matthias Proske <Matthias.Proske@bshg.com>");
+MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
+MODULE_DESCRIPTION("Synaptics R63353 Controller Driver");
+MODULE_LICENSE("GPL");
projects / mirror_ubuntu-kernels.git / commitdiff