#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/spi/spi.h>
#include <drm/clients/drm_client_setup.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_mipi_dbi.h>
#include <drm/drm_modeset_helper.h>
#include <drm/drm_print.h>
#include <video/mipi_display.h>
#define ILI9163_FRMCTR1 0xb1
#define ILI9163_PWCTRL1 0xc0
#define ILI9163_PWCTRL2 0xc1
#define ILI9163_VMCTRL1 0xc5
#define ILI9163_VMCTRL2 0xc7
#define ILI9163_PWCTRLA 0xcb
#define ILI9163_PWCTRLB 0xcf
#define ILI9163_EN3GAM 0xf2
#define ILI9163_MADCTL_BGR BIT(3)
#define ILI9163_MADCTL_MV BIT(5)
#define ILI9163_MADCTL_MX BIT(6)
#define ILI9163_MADCTL_MY BIT(7)
struct ili9163_device {
struct mipi_dbi_dev dbidev;
struct drm_plane plane;
struct drm_crtc crtc;
struct drm_encoder encoder;
struct drm_connector connector;
};
static struct ili9163_device *to_ili9163_device(struct drm_device *dev)
{
return container_of(drm_to_mipi_dbi_dev(dev), struct ili9163_device, dbidev);
}
static const u32 ili9163_plane_formats[] = {
DRM_MIPI_DBI_PLANE_FORMATS,
};
static const u64 ili9163_plane_format_modifiers[] = {
DRM_MIPI_DBI_PLANE_FORMAT_MODIFIERS,
};
static const struct drm_plane_helper_funcs ili9163_plane_helper_funcs = {
DRM_MIPI_DBI_PLANE_HELPER_FUNCS,
};
static const struct drm_plane_funcs ili9163_plane_funcs = {
DRM_MIPI_DBI_PLANE_FUNCS,
.destroy = drm_plane_cleanup,
};
static void ili9163_crtc_helper_atomic_enable(struct drm_crtc *crtc,
struct drm_atomic_commit *state)
{
struct drm_device *drm = crtc->dev;
struct ili9163_device *ili9163 = to_ili9163_device(drm);
struct mipi_dbi_dev *dbidev = &ili9163->dbidev;
struct mipi_dbi *dbi = &dbidev->dbi;
u8 addr_mode;
int ret, idx;
if (!drm_dev_enter(drm, &idx))
return;
DRM_DEBUG_KMS("\n");
ret = mipi_dbi_poweron_conditional_reset(dbidev);
if (ret < 0)
goto out_exit;
if (ret == 1)
goto out_enable;
mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x04);
mipi_dbi_command(dbi, ILI9163_EN3GAM, 0x00);
mipi_dbi_command(dbi, ILI9163_FRMCTR1, 0x0a, 0x14);
mipi_dbi_command(dbi, ILI9163_PWCTRL1, 0x0a, 0x00);
mipi_dbi_command(dbi, ILI9163_PWCTRL2, 0x02);
mipi_dbi_command(dbi, ILI9163_VMCTRL1, 0x2f, 0x3e);
mipi_dbi_command(dbi, ILI9163_VMCTRL2, 0x40);
mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
msleep(100);
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
msleep(100);
out_enable:
switch (dbidev->rotation) {
default:
addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MY;
break;
case 90:
addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MV;
break;
case 180:
addr_mode = 0;
break;
case 270:
addr_mode = ILI9163_MADCTL_MY | ILI9163_MADCTL_MV;
break;
}
addr_mode |= ILI9163_MADCTL_BGR;
mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
backlight_enable(dbidev->backlight);
out_exit:
drm_dev_exit(idx);
}
static const struct drm_crtc_helper_funcs ili9163_crtc_helper_funcs = {
DRM_MIPI_DBI_CRTC_HELPER_FUNCS,
.atomic_enable = ili9163_crtc_helper_atomic_enable,
};
static const struct drm_crtc_funcs ili9163_crtc_funcs = {
DRM_MIPI_DBI_CRTC_FUNCS,
.destroy = drm_crtc_cleanup,
};
static const struct drm_encoder_funcs ili9163_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
static const struct drm_connector_helper_funcs ili9163_connector_helper_funcs = {
DRM_MIPI_DBI_CONNECTOR_HELPER_FUNCS,
};
static const struct drm_connector_funcs ili9163_connector_funcs = {
DRM_MIPI_DBI_CONNECTOR_FUNCS,
.destroy = drm_connector_cleanup,
};
static const struct drm_mode_config_helper_funcs ili9163_mode_config_helper_funcs = {
DRM_MIPI_DBI_MODE_CONFIG_HELPER_FUNCS,
};
static const struct drm_mode_config_funcs ili9163_mode_config_funcs = {
DRM_MIPI_DBI_MODE_CONFIG_FUNCS,
};
static const struct drm_display_mode yx240qv29_mode = {
DRM_SIMPLE_MODE(128, 160, 28, 35),
};
DEFINE_DRM_GEM_DMA_FOPS(ili9163_fops);
static struct drm_driver ili9163_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.fops = &ili9163_fops,
DRM_GEM_DMA_DRIVER_OPS_VMAP,
DRM_FBDEV_DMA_DRIVER_OPS,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "ili9163",
.desc = "Ilitek ILI9163",
.major = 1,
.minor = 0,
};
static const struct of_device_id ili9163_of_match[] = {
{ .compatible = "newhaven,1.8-128160EF" },
{ }
};
MODULE_DEVICE_TABLE(of, ili9163_of_match);
static const struct spi_device_id ili9163_id[] = {
{ "nhd-1.8-128160EF", 0 },
{ }
};
MODULE_DEVICE_TABLE(spi, ili9163_id);
static int ili9163_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct ili9163_device *ili9163;
struct mipi_dbi_dev *dbidev;
struct drm_device *drm;
struct mipi_dbi *dbi;
struct gpio_desc *dc;
struct drm_plane *plane;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
u32 rotation = 0;
int ret;
ili9163 = devm_drm_dev_alloc(dev, &ili9163_driver, struct ili9163_device, dbidev.drm);
if (IS_ERR(ili9163))
return PTR_ERR(ili9163);
dbidev = &ili9163->dbidev;
dbi = &dbidev->dbi;
drm = &dbidev->drm;
spi_set_drvdata(spi, drm);
dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(dbi->reset)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
return PTR_ERR(dbi->reset);
}
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
if (IS_ERR(dc)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
return PTR_ERR(dc);
}
dbidev->backlight = devm_of_find_backlight(dev);
if (IS_ERR(dbidev->backlight))
return PTR_ERR(dbidev->backlight);
device_property_read_u32(dev, "rotation", &rotation);
ret = mipi_dbi_spi_init(spi, dbi, dc);
if (ret)
return ret;
ret = drm_mipi_dbi_dev_init(dbidev, &yx240qv29_mode, ili9163_plane_formats[0],
rotation, 0);
if (ret)
return ret;
ret = drmm_mode_config_init(drm);
if (ret)
return ret;
drm->mode_config.min_width = dbidev->mode.hdisplay;
drm->mode_config.max_width = dbidev->mode.hdisplay;
drm->mode_config.min_height = dbidev->mode.vdisplay;
drm->mode_config.max_height = dbidev->mode.vdisplay;
drm->mode_config.funcs = &ili9163_mode_config_funcs;
drm->mode_config.preferred_depth = 16;
drm->mode_config.helper_private = &ili9163_mode_config_helper_funcs;
plane = &ili9163->plane;
ret = drm_universal_plane_init(drm, plane, 0, &ili9163_plane_funcs,
ili9163_plane_formats, ARRAY_SIZE(ili9163_plane_formats),
ili9163_plane_format_modifiers,
DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret)
return ret;
drm_plane_helper_add(plane, &ili9163_plane_helper_funcs);
drm_plane_enable_fb_damage_clips(plane);
crtc = &ili9163->crtc;
ret = drm_crtc_init_with_planes(drm, crtc, plane, NULL, &ili9163_crtc_funcs, NULL);
if (ret)
return ret;
drm_crtc_helper_add(crtc, &ili9163_crtc_helper_funcs);
encoder = &ili9163->encoder;
ret = drm_encoder_init(drm, encoder, &ili9163_encoder_funcs, DRM_MODE_ENCODER_NONE, NULL);
if (ret)
return ret;
encoder->possible_crtcs = drm_crtc_mask(crtc);
connector = &ili9163->connector;
ret = drm_connector_init(drm, connector, &ili9163_connector_funcs,
DRM_MODE_CONNECTOR_SPI);
if (ret)
return ret;
drm_connector_helper_add(connector, &ili9163_connector_helper_funcs);
ret = drm_connector_attach_encoder(connector, encoder);
if (ret)
return ret;
drm_mode_config_reset(drm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
drm_client_setup(drm, NULL);
return 0;
}
static void ili9163_remove(struct spi_device *spi)
{
struct drm_device *drm = spi_get_drvdata(spi);
drm_dev_unplug(drm);
drm_atomic_helper_shutdown(drm);
}
static void ili9163_shutdown(struct spi_device *spi)
{
drm_atomic_helper_shutdown(spi_get_drvdata(spi));
}
static struct spi_driver ili9163_spi_driver = {
.driver = {
.name = "ili9163",
.of_match_table = ili9163_of_match,
},
.id_table = ili9163_id,
.probe = ili9163_probe,
.remove = ili9163_remove,
.shutdown = ili9163_shutdown,
};
module_spi_driver(ili9163_spi_driver);
MODULE_DESCRIPTION("Ilitek ILI9163 DRM driver");
MODULE_AUTHOR("Daniel Mack <daniel@zonque.org>");
MODULE_LICENSE("GPL");
