mirror of https://gitee.com/openkylin/linux.git
234 lines
6.0 KiB
C
234 lines
6.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* DRM driver for Ilitek ILI9341 panels
|
|
*
|
|
* Copyright 2018 David Lechner <david@lechnology.com>
|
|
*
|
|
* Based on mi0283qt.c:
|
|
* Copyright 2016 Noralf Trønnes
|
|
*/
|
|
|
|
#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/drm_drv.h>
|
|
#include <drm/drm_gem_cma_helper.h>
|
|
#include <drm/drm_gem_framebuffer_helper.h>
|
|
#include <drm/drm_modeset_helper.h>
|
|
#include <drm/tinydrm/mipi-dbi.h>
|
|
#include <drm/tinydrm/tinydrm-helpers.h>
|
|
#include <video/mipi_display.h>
|
|
|
|
#define ILI9341_FRMCTR1 0xb1
|
|
#define ILI9341_DISCTRL 0xb6
|
|
#define ILI9341_ETMOD 0xb7
|
|
|
|
#define ILI9341_PWCTRL1 0xc0
|
|
#define ILI9341_PWCTRL2 0xc1
|
|
#define ILI9341_VMCTRL1 0xc5
|
|
#define ILI9341_VMCTRL2 0xc7
|
|
#define ILI9341_PWCTRLA 0xcb
|
|
#define ILI9341_PWCTRLB 0xcf
|
|
|
|
#define ILI9341_PGAMCTRL 0xe0
|
|
#define ILI9341_NGAMCTRL 0xe1
|
|
#define ILI9341_DTCTRLA 0xe8
|
|
#define ILI9341_DTCTRLB 0xea
|
|
#define ILI9341_PWRSEQ 0xed
|
|
|
|
#define ILI9341_EN3GAM 0xf2
|
|
#define ILI9341_PUMPCTRL 0xf7
|
|
|
|
#define ILI9341_MADCTL_BGR BIT(3)
|
|
#define ILI9341_MADCTL_MV BIT(5)
|
|
#define ILI9341_MADCTL_MX BIT(6)
|
|
#define ILI9341_MADCTL_MY BIT(7)
|
|
|
|
static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_plane_state *plane_state)
|
|
{
|
|
struct tinydrm_device *tdev = pipe_to_tinydrm(pipe);
|
|
struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
|
|
u8 addr_mode;
|
|
int ret;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
ret = mipi_dbi_poweron_conditional_reset(mipi);
|
|
if (ret < 0)
|
|
return;
|
|
if (ret == 1)
|
|
goto out_enable;
|
|
|
|
mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF);
|
|
|
|
mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0xc1, 0x30);
|
|
mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
|
|
mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x00, 0x78);
|
|
mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
|
|
mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20);
|
|
mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00);
|
|
|
|
/* Power Control */
|
|
mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x23);
|
|
mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x10);
|
|
/* VCOM */
|
|
mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x3e, 0x28);
|
|
mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0x86);
|
|
|
|
/* Memory Access Control */
|
|
mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
|
|
|
|
/* Frame Rate */
|
|
mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b);
|
|
|
|
/* Gamma */
|
|
mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x00);
|
|
mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
|
|
mipi_dbi_command(mipi, ILI9341_PGAMCTRL,
|
|
0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
|
|
0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
|
|
mipi_dbi_command(mipi, ILI9341_NGAMCTRL,
|
|
0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
|
|
0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
|
|
|
|
/* DDRAM */
|
|
mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07);
|
|
|
|
/* Display */
|
|
mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x08, 0x82, 0x27, 0x00);
|
|
mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE);
|
|
msleep(100);
|
|
|
|
mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON);
|
|
msleep(100);
|
|
|
|
out_enable:
|
|
switch (mipi->rotation) {
|
|
default:
|
|
addr_mode = ILI9341_MADCTL_MX;
|
|
break;
|
|
case 90:
|
|
addr_mode = ILI9341_MADCTL_MV;
|
|
break;
|
|
case 180:
|
|
addr_mode = ILI9341_MADCTL_MY;
|
|
break;
|
|
case 270:
|
|
addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
|
|
ILI9341_MADCTL_MX;
|
|
break;
|
|
}
|
|
addr_mode |= ILI9341_MADCTL_BGR;
|
|
mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
|
|
mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
|
|
}
|
|
|
|
static const struct drm_simple_display_pipe_funcs ili9341_pipe_funcs = {
|
|
.enable = yx240qv29_enable,
|
|
.disable = mipi_dbi_pipe_disable,
|
|
.update = mipi_dbi_pipe_update,
|
|
.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
|
|
};
|
|
|
|
static const struct drm_display_mode yx240qv29_mode = {
|
|
TINYDRM_MODE(240, 320, 37, 49),
|
|
};
|
|
|
|
DEFINE_DRM_GEM_CMA_FOPS(ili9341_fops);
|
|
|
|
static struct drm_driver ili9341_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
|
|
.fops = &ili9341_fops,
|
|
DRM_GEM_CMA_VMAP_DRIVER_OPS,
|
|
.debugfs_init = mipi_dbi_debugfs_init,
|
|
.name = "ili9341",
|
|
.desc = "Ilitek ILI9341",
|
|
.date = "20180514",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
static const struct of_device_id ili9341_of_match[] = {
|
|
{ .compatible = "adafruit,yx240qv29" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ili9341_of_match);
|
|
|
|
static const struct spi_device_id ili9341_id[] = {
|
|
{ "yx240qv29", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, ili9341_id);
|
|
|
|
static int ili9341_probe(struct spi_device *spi)
|
|
{
|
|
struct device *dev = &spi->dev;
|
|
struct mipi_dbi *mipi;
|
|
struct gpio_desc *dc;
|
|
u32 rotation = 0;
|
|
int ret;
|
|
|
|
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
|
|
if (!mipi)
|
|
return -ENOMEM;
|
|
|
|
mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(mipi->reset)) {
|
|
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
|
|
return PTR_ERR(mipi->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);
|
|
}
|
|
|
|
mipi->backlight = devm_of_find_backlight(dev);
|
|
if (IS_ERR(mipi->backlight))
|
|
return PTR_ERR(mipi->backlight);
|
|
|
|
device_property_read_u32(dev, "rotation", &rotation);
|
|
|
|
ret = mipi_dbi_spi_init(spi, mipi, dc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mipi_dbi_init(&spi->dev, mipi, &ili9341_pipe_funcs,
|
|
&ili9341_driver, &yx240qv29_mode, rotation);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spi_set_drvdata(spi, mipi);
|
|
|
|
return devm_tinydrm_register(&mipi->tinydrm);
|
|
}
|
|
|
|
static void ili9341_shutdown(struct spi_device *spi)
|
|
{
|
|
struct mipi_dbi *mipi = spi_get_drvdata(spi);
|
|
|
|
tinydrm_shutdown(&mipi->tinydrm);
|
|
}
|
|
|
|
static struct spi_driver ili9341_spi_driver = {
|
|
.driver = {
|
|
.name = "ili9341",
|
|
.of_match_table = ili9341_of_match,
|
|
},
|
|
.id_table = ili9341_id,
|
|
.probe = ili9341_probe,
|
|
.shutdown = ili9341_shutdown,
|
|
};
|
|
module_spi_driver(ili9341_spi_driver);
|
|
|
|
MODULE_DESCRIPTION("Ilitek ILI9341 DRM driver");
|
|
MODULE_AUTHOR("David Lechner <david@lechnology.com>");
|
|
MODULE_LICENSE("GPL");
|