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// SPDX-License-Identifier: GPL-2.0
#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>
#define R61307_MACP 0xb0 /* Manufacturer CMD Protect */
#define R61307_MACP_ON 0x03
#define R61307_MACP_OFF 0x04
#define R61307_INVERSION 0xc1
#define R61307_GAMMA_SET_A 0xc8 /* Gamma Setting A */
#define R61307_GAMMA_SET_B 0xc9 /* Gamma Setting B */
#define R61307_GAMMA_SET_C 0xca /* Gamma Setting C */
#define R61307_CONTRAST_SET 0xcc
struct renesas_r61307 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct regulator *vcc_supply;
struct regulator *iovcc_supply;
struct gpio_desc *reset_gpio;
bool prepared;
bool dig_cont_adj;
bool inversion;
u32 gamma;
};
static const u8 gamma_setting[][25] = {
{ /* sentinel */ },
{
R61307_GAMMA_SET_A,
0x00, 0x06, 0x0a, 0x0f,
0x14, 0x1f, 0x1f, 0x17,
0x12, 0x0c, 0x09, 0x06,
0x00, 0x06, 0x0a, 0x0f,
0x14, 0x1f, 0x1f, 0x17,
0x12, 0x0c, 0x09, 0x06
},
{
R61307_GAMMA_SET_A,
0x00, 0x05, 0x0b, 0x0f,
0x11, 0x1d, 0x20, 0x18,
0x18, 0x09, 0x07, 0x06,
0x00, 0x05, 0x0b, 0x0f,
0x11, 0x1d, 0x20, 0x18,
0x18, 0x09, 0x07, 0x06
},
{
R61307_GAMMA_SET_A,
0x0b, 0x0d, 0x10, 0x14,
0x13, 0x1d, 0x20, 0x18,
0x12, 0x09, 0x07, 0x06,
0x0a, 0x0c, 0x10, 0x14,
0x13, 0x1d, 0x20, 0x18,
0x12, 0x09, 0x07, 0x06
},
};
static inline struct renesas_r61307 *to_renesas_r61307(struct drm_panel *panel)
{
return container_of(panel, struct renesas_r61307, panel);
}
static void renesas_r61307_reset(struct renesas_r61307 *priv)
{
gpiod_set_value_cansleep(priv->reset_gpio, 1);
usleep_range(10000, 11000);
gpiod_set_value_cansleep(priv->reset_gpio, 0);
usleep_range(2000, 3000);
}
static int renesas_r61307_prepare(struct drm_panel *panel)
{
struct renesas_r61307 *priv = to_renesas_r61307(panel);
struct device *dev = &priv->dsi->dev;
int ret;
if (priv->prepared)
return 0;
ret = regulator_enable(priv->vcc_supply);
if (ret) {
dev_err(dev, "failed to enable vcc power supply\n");
return ret;
}
usleep_range(2000, 3000);
ret = regulator_enable(priv->iovcc_supply);
if (ret) {
dev_err(dev, "failed to enable iovcc power supply\n");
return ret;
}
usleep_range(2000, 3000);
renesas_r61307_reset(priv);
priv->prepared = true;
return 0;
}
static int renesas_r61307_enable(struct drm_panel *panel)
{
struct renesas_r61307 *priv = to_renesas_r61307(panel);
struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };
mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
mipi_dsi_msleep(&ctx, 80);
mipi_dsi_dcs_write_seq_multi(&ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
mipi_dsi_msleep(&ctx, 20);
mipi_dsi_dcs_set_pixel_format_multi(&ctx, MIPI_DCS_PIXEL_FMT_24BIT << 4);
/* MACP Off */
mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_OFF);
if (priv->dig_cont_adj)
mipi_dsi_generic_write_seq_multi(&ctx, R61307_CONTRAST_SET,
0xdc, 0xb4, 0xff);
if (priv->gamma)
mipi_dsi_generic_write_multi(&ctx, gamma_setting[priv->gamma],
sizeof(gamma_setting[priv->gamma]));
if (priv->inversion)
mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
0x00, 0x50, 0x03, 0x22,
0x16, 0x06, 0x60, 0x11);
else
mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
0x00, 0x10, 0x03, 0x22,
0x16, 0x06, 0x60, 0x01);
/* MACP On */
mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_ON);
mipi_dsi_dcs_set_display_on_multi(&ctx);
mipi_dsi_msleep(&ctx, 50);
return 0;
}
static int renesas_r61307_disable(struct drm_panel *panel)
{
struct renesas_r61307 *priv = to_renesas_r61307(panel);
struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };
mipi_dsi_dcs_set_display_off_multi(&ctx);
mipi_dsi_msleep(&ctx, 100);
mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
return 0;
}
static int renesas_r61307_unprepare(struct drm_panel *panel)
{
struct renesas_r61307 *priv = to_renesas_r61307(panel);
if (!priv->prepared)
return 0;
usleep_range(10000, 11000);
gpiod_set_value_cansleep(priv->reset_gpio, 1);
usleep_range(5000, 6000);
regulator_disable(priv->iovcc_supply);
usleep_range(2000, 3000);
regulator_disable(priv->vcc_supply);
priv->prepared = false;
return 0;
}
static const struct drm_display_mode renesas_r61307_mode = {
.clock = (768 + 116 + 81 + 5) * (1024 + 24 + 8 + 2) * 60 / 1000,
.hdisplay = 768,
.hsync_start = 768 + 116,
.hsync_end = 768 + 116 + 81,
.htotal = 768 + 116 + 81 + 5,
.vdisplay = 1024,
.vsync_start = 1024 + 24,
.vsync_end = 1024 + 24 + 8,
.vtotal = 1024 + 24 + 8 + 2,
.width_mm = 76,
.height_mm = 101,
};
static int renesas_r61307_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &renesas_r61307_mode);
if (!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);
return 1;
}
static const struct drm_panel_funcs renesas_r61307_panel_funcs = {
.prepare = renesas_r61307_prepare,
.enable = renesas_r61307_enable,
.disable = renesas_r61307_disable,
.unprepare = renesas_r61307_unprepare,
.get_modes = renesas_r61307_get_modes,
};
static int renesas_r61307_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct renesas_r61307 *priv;
int ret;
priv = devm_drm_panel_alloc(dev, struct renesas_r61307, panel,
&renesas_r61307_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(priv))
return PTR_ERR(priv);
priv->vcc_supply = devm_regulator_get(dev, "vcc");
if (IS_ERR(priv->vcc_supply))
return dev_err_probe(dev, PTR_ERR(priv->vcc_supply),
"Failed to get vcc-supply\n");
priv->iovcc_supply = devm_regulator_get(dev, "iovcc");
if (IS_ERR(priv->iovcc_supply))
return dev_err_probe(dev, PTR_ERR(priv->iovcc_supply),
"Failed to get iovcc-supply\n");
priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_HIGH);
if (IS_ERR(priv->reset_gpio))
return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
"Failed to get reset gpios\n");
if (device_property_read_bool(dev, "renesas,inversion"))
priv->inversion = true;
if (device_property_read_bool(dev, "renesas,contrast"))
priv->dig_cont_adj = true;
priv->gamma = 0;
device_property_read_u32(dev, "renesas,gamma", &priv->gamma);
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_VIDEO_SYNC_PULSE |
MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
ret = drm_panel_of_backlight(&priv->panel);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
drm_panel_add(&priv->panel);
ret = mipi_dsi_attach(dsi);
if (ret) {
drm_panel_remove(&priv->panel);
return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
}
return 0;
}
static void renesas_r61307_remove(struct mipi_dsi_device *dsi)
{
struct renesas_r61307 *priv = mipi_dsi_get_drvdata(dsi);
int ret;
ret = mipi_dsi_detach(dsi);
if (ret)
dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
drm_panel_remove(&priv->panel);
}
static const struct of_device_id renesas_r61307_of_match[] = {
{ .compatible = "hit,tx13d100vm0eaa" },
{ .compatible = "koe,tx13d100vm0eaa" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, renesas_r61307_of_match);
static struct mipi_dsi_driver renesas_r61307_driver = {
.probe = renesas_r61307_probe,
.remove = renesas_r61307_remove,
.driver = {
.name = "panel-renesas-r61307",
.of_match_table = renesas_r61307_of_match,
},
};
module_mipi_dsi_driver(renesas_r61307_driver);
MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
MODULE_DESCRIPTION("Renesas R61307-based panel driver");
MODULE_LICENSE("GPL");
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