// SPDX-License-Identifier: GPL-2.0
/*
* Mantix MLAF057WE51 5.7" MIPI-DSI panel driver
*
* Copyright (C) Purism SPC 2020
*/
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/media-bus-format.h>
#include <linux/module.h>
#include <linux/of.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>
#define DRV_NAME "panel-mantix-mlaf057we51"
/* Manufacturer specific Commands send via DSI */
#define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
#define MANTIX_CMD_INT_CANCEL 0x4c
#define MANTIX_CMD_SPI_FINISH 0x90
struct mantix {
struct device *dev;
struct drm_panel panel;
struct gpio_desc *reset_gpio;
struct gpio_desc *tp_rstn_gpio;
struct regulator *avdd;
struct regulator *avee;
struct regulator *vddi;
const struct drm_display_mode *default_mode;
};
static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
{
return container_of(panel, struct mantix, panel);
}
static void mantix_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
{
/*
* Init sequence was supplied by the panel vendor.
*/
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a);
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_INT_CANCEL, 0x03);
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x03);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0xa9, 0x00);
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x09);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
mipi_dsi_msleep(dsi_ctx, 20);
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_SPI_FINISH, 0xa5);
mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2f);
mipi_dsi_msleep(dsi_ctx, 20);
}
static int mantix_enable(struct drm_panel *panel)
{
struct mantix *ctx = panel_to_mantix(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
mantix_init_sequence(&dsi_ctx);
if (!dsi_ctx.accum_err)
dev_dbg(ctx->dev, "Panel init sequence done\n");
mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 20);
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
mipi_dsi_usleep_range(&dsi_ctx, 10000, 12000);
mipi_dsi_turn_on_peripheral_multi(&dsi_ctx);
return dsi_ctx.accum_err;
}
static int mantix_disable(struct drm_panel *panel)
{
struct mantix *ctx = panel_to_mantix(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
return dsi_ctx.accum_err;
}
static int mantix_unprepare(struct drm_panel *panel)
{
struct mantix *ctx = panel_to_mantix(panel);
gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);
usleep_range(5000, 6000);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_disable(ctx->avee);
regulator_disable(ctx->avdd);
/* T11 */
usleep_range(5000, 6000);
regulator_disable(ctx->vddi);
/* T14 */
msleep(50);
return 0;
}
static int mantix_prepare(struct drm_panel *panel)
{
struct mantix *ctx = panel_to_mantix(panel);
int ret;
/* Focaltech FT8006P, section 7.3.1 and 7.3.4 */
dev_dbg(ctx->dev, "Resetting the panel\n");
ret = regulator_enable(ctx->vddi);
if (ret < 0) {
dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);
return ret;
}
/* T1 + T2 */
usleep_range(8000, 10000);
ret = regulator_enable(ctx->avdd);
if (ret < 0) {
dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);
return ret;
}
/* T2d */
usleep_range(3500, 4000);
ret = regulator_enable(ctx->avee);
if (ret < 0) {
dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);
return ret;
}
/* T3 + T4 + time for voltage to become stable: */
usleep_range(6000, 7000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);
/* T6 */
msleep(50);
return 0;
}
static const struct drm_display_mode default_mode_mantix = {
.hdisplay = 720,
.hsync_start = 720 + 45,
.hsync_end = 720 + 45 + 14,
.htotal = 720 + 45 + 14 + 25,
.vdisplay = 1440,
.vsync_start = 1440 + 130,
.vsync_end = 1440 + 130 + 8,
.vtotal = 1440 + 130 + 8 + 106,
.clock = 85298,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
.width_mm = 65,
.height_mm = 130,
};
static const struct drm_display_mode default_mode_ys = {
.hdisplay = 720,
.hsync_start = 720 + 45,
.hsync_end = 720 + 45 + 14,
.htotal = 720 + 45 + 14 + 25,
.vdisplay = 1440,
.vsync_start = 1440 + 175,
.vsync_end = 1440 + 175 + 8,
.vtotal = 1440 + 175 + 8 + 50,
.clock = 85298,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
.width_mm = 65,
.height_mm = 130,
};
static const u32 mantix_bus_formats[] = {
MEDIA_BUS_FMT_RGB888_1X24,
};
static int mantix_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct mantix *ctx = panel_to_mantix(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, ctx->default_mode);
if (!mode) {
dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
drm_mode_vrefresh(ctx->default_mode));
return -ENOMEM;
}
drm_mode_set_name(mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
drm_mode_probed_add(connector, mode);
drm_display_info_set_bus_formats(&connector->display_info,
mantix_bus_formats,
ARRAY_SIZE(mantix_bus_formats));
return 1;
}
static const struct drm_panel_funcs mantix_drm_funcs = {
.disable = mantix_disable,
.unprepare = mantix_unprepare,
.prepare = mantix_prepare,
.enable = mantix_enable,
.get_modes = mantix_get_modes,
};
static int mantix_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct mantix *ctx;
int ret;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->default_mode = of_device_get_match_data(dev);
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(dev, "cannot get reset gpio\n");
return PTR_ERR(ctx->reset_gpio);
}
ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->tp_rstn_gpio)) {
dev_err(dev, "cannot get tp-rstn gpio\n");
return PTR_ERR(ctx->tp_rstn_gpio);
}
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dev = dev;
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
ctx->avdd = devm_regulator_get(dev, "avdd");
if (IS_ERR(ctx->avdd))
return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");
ctx->avee = devm_regulator_get(dev, "avee");
if (IS_ERR(ctx->avee))
return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");
ctx->vddi = devm_regulator_get(dev, "vddi");
if (IS_ERR(ctx->vddi))
return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");
drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&ctx->panel);
if (ret)
return ret;
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
drm_panel_remove(&ctx->panel);
return ret;
}
dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
drm_mode_vrefresh(ctx->default_mode),
mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
return 0;
}
static void mantix_shutdown(struct mipi_dsi_device *dsi)
{
struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
drm_panel_unprepare(&ctx->panel);
drm_panel_disable(&ctx->panel);
}
static void mantix_remove(struct mipi_dsi_device *dsi)
{
struct mantix *ctx = mipi_dsi_get_drvdata(dsi);
mantix_shutdown(dsi);
mipi_dsi_detach(dsi);
drm_panel_remove(&ctx->panel);
}
static const struct of_device_id mantix_of_match[] = {
{ .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix },
{ .compatible = "ys,ys57pss36bh5gq", .data = &default_mode_ys },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mantix_of_match);
static struct mipi_dsi_driver mantix_driver = {
.probe = mantix_probe,
.remove = mantix_remove,
.shutdown = mantix_shutdown,
.driver = {
.name = DRV_NAME,
.of_match_table = mantix_of_match,
},
};
module_mipi_dsi_driver(mantix_driver);
MODULE_AUTHOR("Guido Günther <[email protected]>");
MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");
MODULE_LICENSE("GPL v2");
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