#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <video/mipi_display.h>
#include <drm/drm_connector.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.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 sharp_supplies[] = {
{ .supply = "avdd" }, { .supply = "vddio" },
{ .supply = "vsp" }, { .supply = "vsn" },
};
struct sharp_panel {
struct drm_panel panel;
struct mipi_dsi_device *dsi[2];
struct gpio_desc *reset_gpio;
struct regulator_bulk_data *supplies;
const struct drm_display_mode *mode;
};
static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)
{
return container_of(panel, struct sharp_panel, panel);
}
static void sharp_panel_reset(struct sharp_panel *sharp)
{
gpiod_set_value_cansleep(sharp->reset_gpio, 1);
usleep_range(2000, 3000);
gpiod_set_value_cansleep(sharp->reset_gpio, 0);
usleep_range(2000, 3000);
}
static int sharp_panel_prepare(struct drm_panel *panel)
{
struct sharp_panel *sharp = to_sharp_panel(panel);
struct device *dev = panel->dev;
struct mipi_dsi_device *dsi0 = sharp->dsi[0];
struct mipi_dsi_device *dsi1 = sharp->dsi[1];
struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(sharp_supplies), sharp->supplies);
if (ret) {
dev_err(dev, "error enabling regulators (%d)\n", ret);
return ret;
}
msleep(24);
if (sharp->reset_gpio)
sharp_panel_reset(sharp);
msleep(32);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_EXIT_SLEEP_MODE);
mipi_dsi_msleep(&dsi_ctx, 120);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
MIPI_DCS_WRITE_POWER_SAVE, 0x01);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x2c);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_ON);
return 0;
}
static int sharp_panel_unprepare(struct drm_panel *panel)
{
struct sharp_panel *sharp = to_sharp_panel(panel);
struct mipi_dsi_device *dsi0 = sharp->dsi[0];
struct mipi_dsi_device *dsi1 = sharp->dsi[1];
struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_OFF);
mipi_dsi_msleep(&dsi_ctx, 100);
mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_ENTER_SLEEP_MODE);
mipi_dsi_msleep(&dsi_ctx, 150);
if (sharp->reset_gpio)
gpiod_set_value_cansleep(sharp->reset_gpio, 1);
return regulator_bulk_disable(ARRAY_SIZE(sharp_supplies), sharp->supplies);
}
static const struct drm_display_mode default_mode = {
.clock = (1536 + 136 + 28 + 28) * (2048 + 14 + 8 + 2) * 60 / 1000,
.hdisplay = 1536,
.hsync_start = 1536 + 136,
.hsync_end = 1536 + 136 + 28,
.htotal = 1536 + 136 + 28 + 28,
.vdisplay = 2048,
.vsync_start = 2048 + 14,
.vsync_end = 2048 + 14 + 8,
.vtotal = 2048 + 14 + 8 + 2,
.width_mm = 120,
.height_mm = 160,
.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
};
static int sharp_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
return drm_connector_helper_get_modes_fixed(connector, &default_mode);
}
static const struct drm_panel_funcs sharp_panel_funcs = {
.unprepare = sharp_panel_unprepare,
.prepare = sharp_panel_prepare,
.get_modes = sharp_panel_get_modes,
};
static int sharp_panel_probe(struct mipi_dsi_device *dsi)
{
const struct mipi_dsi_device_info info = { "sharp-link1", 0, NULL };
struct device *dev = &dsi->dev;
struct device_node *dsi_r;
struct mipi_dsi_host *dsi_r_host;
struct sharp_panel *sharp;
int i, ret;
sharp = devm_drm_panel_alloc(dev, struct sharp_panel, panel,
&sharp_panel_funcs, DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(sharp))
return PTR_ERR(sharp);
ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(sharp_supplies),
sharp_supplies, &sharp->supplies);
if (ret)
return dev_err_probe(dev, ret, "failed to get supplies\n");
sharp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(sharp->reset_gpio))
return dev_err_probe(dev, PTR_ERR(sharp->reset_gpio),
"failed to get reset GPIO\n");
dsi_r = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);
if (!dsi_r)
return dev_err_probe(dev, -ENODEV, "failed to find second DSI host node\n");
dsi_r_host = of_find_mipi_dsi_host_by_node(dsi_r);
of_node_put(dsi_r);
if (!dsi_r_host)
return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");
sharp->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi_r_host, &info);
if (IS_ERR(sharp->dsi[1]))
return dev_err_probe(dev, PTR_ERR(sharp->dsi[1]),
"second link registration failed\n");
sharp->dsi[0] = dsi;
mipi_dsi_set_drvdata(dsi, sharp);
ret = drm_panel_of_backlight(&sharp->panel);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
drm_panel_add(&sharp->panel);
for (i = 0; i < ARRAY_SIZE(sharp->dsi); i++) {
if (!sharp->dsi[i])
continue;
sharp->dsi[i]->lanes = 4;
sharp->dsi[i]->format = MIPI_DSI_FMT_RGB888;
sharp->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;
ret = devm_mipi_dsi_attach(dev, sharp->dsi[i]);
if (ret < 0) {
drm_panel_remove(&sharp->panel);
return dev_err_probe(dev, ret, "failed to attach to DSI%d\n", i);
}
}
return 0;
}
static void sharp_panel_remove(struct mipi_dsi_device *dsi)
{
struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
drm_panel_remove(&sharp->panel);
}
static const struct of_device_id sharp_of_match[] = {
{ .compatible = "sharp,lq079l1sx01" },
{ }
};
MODULE_DEVICE_TABLE(of, sharp_of_match);
static struct mipi_dsi_driver sharp_panel_driver = {
.driver = {
.name = "panel-sharp-lq079l1sx01",
.of_match_table = sharp_of_match,
},
.probe = sharp_panel_probe,
.remove = sharp_panel_remove,
};
module_mipi_dsi_driver(sharp_panel_driver);
MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
MODULE_DESCRIPTION("Sharp LQ079L1SX01 panel driver");
MODULE_LICENSE("GPL");
