mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 13:53:54 +07:00
06db4b8b26
This adds a helper macro to specify modes that only contain info about resolution. v2: Actually set the width and height (Ilia Mirkin) Cc: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190210131039.52664-5-noralf@tronnes.org
429 lines
12 KiB
C
429 lines
12 KiB
C
/*
|
|
* DRM driver for Ilitek ILI9225 panels
|
|
*
|
|
* Copyright 2017 David Lechner <david@lechnology.com>
|
|
*
|
|
* Some code copied from mipi-dbi.c
|
|
* Copyright 2016 Noralf Trønnes
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/dma-buf.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/module.h>
|
|
#include <linux/property.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <video/mipi_display.h>
|
|
|
|
#include <drm/drm_damage_helper.h>
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_fb_cma_helper.h>
|
|
#include <drm/drm_fourcc.h>
|
|
#include <drm/drm_gem_cma_helper.h>
|
|
#include <drm/drm_gem_framebuffer_helper.h>
|
|
#include <drm/drm_rect.h>
|
|
#include <drm/drm_vblank.h>
|
|
#include <drm/tinydrm/mipi-dbi.h>
|
|
#include <drm/tinydrm/tinydrm-helpers.h>
|
|
|
|
#define ILI9225_DRIVER_READ_CODE 0x00
|
|
#define ILI9225_DRIVER_OUTPUT_CONTROL 0x01
|
|
#define ILI9225_LCD_AC_DRIVING_CONTROL 0x02
|
|
#define ILI9225_ENTRY_MODE 0x03
|
|
#define ILI9225_DISPLAY_CONTROL_1 0x07
|
|
#define ILI9225_BLANK_PERIOD_CONTROL_1 0x08
|
|
#define ILI9225_FRAME_CYCLE_CONTROL 0x0b
|
|
#define ILI9225_INTERFACE_CONTROL 0x0c
|
|
#define ILI9225_OSCILLATION_CONTROL 0x0f
|
|
#define ILI9225_POWER_CONTROL_1 0x10
|
|
#define ILI9225_POWER_CONTROL_2 0x11
|
|
#define ILI9225_POWER_CONTROL_3 0x12
|
|
#define ILI9225_POWER_CONTROL_4 0x13
|
|
#define ILI9225_POWER_CONTROL_5 0x14
|
|
#define ILI9225_VCI_RECYCLING 0x15
|
|
#define ILI9225_RAM_ADDRESS_SET_1 0x20
|
|
#define ILI9225_RAM_ADDRESS_SET_2 0x21
|
|
#define ILI9225_WRITE_DATA_TO_GRAM 0x22
|
|
#define ILI9225_SOFTWARE_RESET 0x28
|
|
#define ILI9225_GATE_SCAN_CONTROL 0x30
|
|
#define ILI9225_VERTICAL_SCROLL_1 0x31
|
|
#define ILI9225_VERTICAL_SCROLL_2 0x32
|
|
#define ILI9225_VERTICAL_SCROLL_3 0x33
|
|
#define ILI9225_PARTIAL_DRIVING_POS_1 0x34
|
|
#define ILI9225_PARTIAL_DRIVING_POS_2 0x35
|
|
#define ILI9225_HORIZ_WINDOW_ADDR_1 0x36
|
|
#define ILI9225_HORIZ_WINDOW_ADDR_2 0x37
|
|
#define ILI9225_VERT_WINDOW_ADDR_1 0x38
|
|
#define ILI9225_VERT_WINDOW_ADDR_2 0x39
|
|
#define ILI9225_GAMMA_CONTROL_1 0x50
|
|
#define ILI9225_GAMMA_CONTROL_2 0x51
|
|
#define ILI9225_GAMMA_CONTROL_3 0x52
|
|
#define ILI9225_GAMMA_CONTROL_4 0x53
|
|
#define ILI9225_GAMMA_CONTROL_5 0x54
|
|
#define ILI9225_GAMMA_CONTROL_6 0x55
|
|
#define ILI9225_GAMMA_CONTROL_7 0x56
|
|
#define ILI9225_GAMMA_CONTROL_8 0x57
|
|
#define ILI9225_GAMMA_CONTROL_9 0x58
|
|
#define ILI9225_GAMMA_CONTROL_10 0x59
|
|
|
|
static inline int ili9225_command(struct mipi_dbi *mipi, u8 cmd, u16 data)
|
|
{
|
|
u8 par[2] = { data >> 8, data & 0xff };
|
|
|
|
return mipi_dbi_command_buf(mipi, cmd, par, 2);
|
|
}
|
|
|
|
static void ili9225_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
|
|
{
|
|
struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
|
|
struct tinydrm_device *tdev = fb->dev->dev_private;
|
|
struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
|
|
unsigned int height = rect->y2 - rect->y1;
|
|
unsigned int width = rect->x2 - rect->x1;
|
|
bool swap = mipi->swap_bytes;
|
|
u16 x_start, y_start;
|
|
u16 x1, x2, y1, y2;
|
|
int ret = 0;
|
|
bool full;
|
|
void *tr;
|
|
|
|
if (!mipi->enabled)
|
|
return;
|
|
|
|
full = width == fb->width && height == fb->height;
|
|
|
|
DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
|
|
|
|
if (!mipi->dc || !full || swap ||
|
|
fb->format->format == DRM_FORMAT_XRGB8888) {
|
|
tr = mipi->tx_buf;
|
|
ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, rect, swap);
|
|
if (ret)
|
|
goto err_msg;
|
|
} else {
|
|
tr = cma_obj->vaddr;
|
|
}
|
|
|
|
switch (mipi->rotation) {
|
|
default:
|
|
x1 = rect->x1;
|
|
x2 = rect->x2 - 1;
|
|
y1 = rect->y1;
|
|
y2 = rect->y2 - 1;
|
|
x_start = x1;
|
|
y_start = y1;
|
|
break;
|
|
case 90:
|
|
x1 = rect->y1;
|
|
x2 = rect->y2 - 1;
|
|
y1 = fb->width - rect->x2;
|
|
y2 = fb->width - rect->x1 - 1;
|
|
x_start = x1;
|
|
y_start = y2;
|
|
break;
|
|
case 180:
|
|
x1 = fb->width - rect->x2;
|
|
x2 = fb->width - rect->x1 - 1;
|
|
y1 = fb->height - rect->y2;
|
|
y2 = fb->height - rect->y1 - 1;
|
|
x_start = x2;
|
|
y_start = y2;
|
|
break;
|
|
case 270:
|
|
x1 = fb->height - rect->y2;
|
|
x2 = fb->height - rect->y1 - 1;
|
|
y1 = rect->x1;
|
|
y2 = rect->x2 - 1;
|
|
x_start = x2;
|
|
y_start = y1;
|
|
break;
|
|
}
|
|
|
|
ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_1, x2);
|
|
ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_2, x1);
|
|
ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_1, y2);
|
|
ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_2, y1);
|
|
|
|
ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, x_start);
|
|
ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, y_start);
|
|
|
|
ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr,
|
|
width * height * 2);
|
|
err_msg:
|
|
if (ret)
|
|
dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
|
|
}
|
|
|
|
static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe,
|
|
struct drm_plane_state *old_state)
|
|
{
|
|
struct drm_plane_state *state = pipe->plane.state;
|
|
struct drm_crtc *crtc = &pipe->crtc;
|
|
struct drm_rect rect;
|
|
|
|
if (drm_atomic_helper_damage_merged(old_state, state, &rect))
|
|
ili9225_fb_dirty(state->fb, &rect);
|
|
|
|
if (crtc->state->event) {
|
|
spin_lock_irq(&crtc->dev->event_lock);
|
|
drm_crtc_send_vblank_event(crtc, crtc->state->event);
|
|
spin_unlock_irq(&crtc->dev->event_lock);
|
|
crtc->state->event = NULL;
|
|
}
|
|
}
|
|
|
|
static void ili9225_pipe_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);
|
|
struct drm_framebuffer *fb = plane_state->fb;
|
|
struct device *dev = tdev->drm->dev;
|
|
struct drm_rect rect = {
|
|
.x1 = 0,
|
|
.x2 = fb->width,
|
|
.y1 = 0,
|
|
.y2 = fb->height,
|
|
};
|
|
int ret;
|
|
u8 am_id;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
mipi_dbi_hw_reset(mipi);
|
|
|
|
/*
|
|
* There don't seem to be two example init sequences that match, so
|
|
* using the one from the popular Arduino library for this display.
|
|
* https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp
|
|
*/
|
|
|
|
ret = ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0000);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(dev, "Error sending command %d\n", ret);
|
|
return;
|
|
}
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0000);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x0000);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x0000);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x0000);
|
|
|
|
msleep(40);
|
|
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0018);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x6121);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x006f);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x495f);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0800);
|
|
|
|
msleep(10);
|
|
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x103b);
|
|
|
|
msleep(50);
|
|
|
|
switch (mipi->rotation) {
|
|
default:
|
|
am_id = 0x30;
|
|
break;
|
|
case 90:
|
|
am_id = 0x18;
|
|
break;
|
|
case 180:
|
|
am_id = 0x00;
|
|
break;
|
|
case 270:
|
|
am_id = 0x28;
|
|
break;
|
|
}
|
|
ili9225_command(mipi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c);
|
|
ili9225_command(mipi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100);
|
|
ili9225_command(mipi, ILI9225_ENTRY_MODE, 0x1000 | am_id);
|
|
ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
|
|
ili9225_command(mipi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808);
|
|
ili9225_command(mipi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100);
|
|
ili9225_command(mipi, ILI9225_INTERFACE_CONTROL, 0x0000);
|
|
ili9225_command(mipi, ILI9225_OSCILLATION_CONTROL, 0x0d01);
|
|
ili9225_command(mipi, ILI9225_VCI_RECYCLING, 0x0020);
|
|
ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, 0x0000);
|
|
ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, 0x0000);
|
|
|
|
ili9225_command(mipi, ILI9225_GATE_SCAN_CONTROL, 0x0000);
|
|
ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_1, 0x00db);
|
|
ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_2, 0x0000);
|
|
ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_3, 0x0000);
|
|
ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db);
|
|
ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000);
|
|
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_1, 0x0000);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_2, 0x0808);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_3, 0x080a);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_4, 0x000a);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_5, 0x0a08);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_6, 0x0808);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_7, 0x0000);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_8, 0x0a00);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_9, 0x0710);
|
|
ili9225_command(mipi, ILI9225_GAMMA_CONTROL_10, 0x0710);
|
|
|
|
ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0012);
|
|
|
|
msleep(50);
|
|
|
|
ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x1017);
|
|
|
|
mipi->enabled = true;
|
|
ili9225_fb_dirty(fb, &rect);
|
|
}
|
|
|
|
static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe)
|
|
{
|
|
struct tinydrm_device *tdev = pipe_to_tinydrm(pipe);
|
|
struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
if (!mipi->enabled)
|
|
return;
|
|
|
|
ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
|
|
msleep(50);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0007);
|
|
msleep(50);
|
|
ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0a02);
|
|
|
|
mipi->enabled = false;
|
|
}
|
|
|
|
static int ili9225_dbi_command(struct mipi_dbi *mipi, u8 cmd, u8 *par,
|
|
size_t num)
|
|
{
|
|
struct spi_device *spi = mipi->spi;
|
|
unsigned int bpw = 8;
|
|
u32 speed_hz;
|
|
int ret;
|
|
|
|
gpiod_set_value_cansleep(mipi->dc, 0);
|
|
speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
|
|
ret = tinydrm_spi_transfer(spi, speed_hz, NULL, 8, &cmd, 1);
|
|
if (ret || !num)
|
|
return ret;
|
|
|
|
if (cmd == ILI9225_WRITE_DATA_TO_GRAM && !mipi->swap_bytes)
|
|
bpw = 16;
|
|
|
|
gpiod_set_value_cansleep(mipi->dc, 1);
|
|
speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
|
|
|
|
return tinydrm_spi_transfer(spi, speed_hz, NULL, bpw, par, num);
|
|
}
|
|
|
|
static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = {
|
|
.enable = ili9225_pipe_enable,
|
|
.disable = ili9225_pipe_disable,
|
|
.update = ili9225_pipe_update,
|
|
.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
|
|
};
|
|
|
|
static const struct drm_display_mode ili9225_mode = {
|
|
DRM_SIMPLE_MODE(176, 220, 35, 44),
|
|
};
|
|
|
|
DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops);
|
|
|
|
static struct drm_driver ili9225_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
|
|
DRIVER_ATOMIC,
|
|
.fops = &ili9225_fops,
|
|
DRM_GEM_CMA_VMAP_DRIVER_OPS,
|
|
.name = "ili9225",
|
|
.desc = "Ilitek ILI9225",
|
|
.date = "20171106",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
static const struct of_device_id ili9225_of_match[] = {
|
|
{ .compatible = "vot,v220hf01a-t" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ili9225_of_match);
|
|
|
|
static const struct spi_device_id ili9225_id[] = {
|
|
{ "v220hf01a-t", 0 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, ili9225_id);
|
|
|
|
static int ili9225_probe(struct spi_device *spi)
|
|
{
|
|
struct device *dev = &spi->dev;
|
|
struct mipi_dbi *mipi;
|
|
struct gpio_desc *rs;
|
|
u32 rotation = 0;
|
|
int ret;
|
|
|
|
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
|
|
if (!mipi)
|
|
return -ENOMEM;
|
|
|
|
mipi->reset = devm_gpiod_get(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);
|
|
}
|
|
|
|
rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW);
|
|
if (IS_ERR(rs)) {
|
|
DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n");
|
|
return PTR_ERR(rs);
|
|
}
|
|
|
|
device_property_read_u32(dev, "rotation", &rotation);
|
|
|
|
ret = mipi_dbi_spi_init(spi, mipi, rs);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* override the command function set in mipi_dbi_spi_init() */
|
|
mipi->command = ili9225_dbi_command;
|
|
|
|
ret = mipi_dbi_init(&spi->dev, mipi, &ili9225_pipe_funcs,
|
|
&ili9225_driver, &ili9225_mode, rotation);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spi_set_drvdata(spi, mipi);
|
|
|
|
return devm_tinydrm_register(&mipi->tinydrm);
|
|
}
|
|
|
|
static void ili9225_shutdown(struct spi_device *spi)
|
|
{
|
|
struct mipi_dbi *mipi = spi_get_drvdata(spi);
|
|
|
|
tinydrm_shutdown(&mipi->tinydrm);
|
|
}
|
|
|
|
static struct spi_driver ili9225_spi_driver = {
|
|
.driver = {
|
|
.name = "ili9225",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = ili9225_of_match,
|
|
},
|
|
.id_table = ili9225_id,
|
|
.probe = ili9225_probe,
|
|
.shutdown = ili9225_shutdown,
|
|
};
|
|
module_spi_driver(ili9225_spi_driver);
|
|
|
|
MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver");
|
|
MODULE_AUTHOR("David Lechner <david@lechnology.com>");
|
|
MODULE_LICENSE("GPL");
|