4a83c26a1d
Rename "GEM CMA" helpers to "GEM DMA" helpers - considering the
hierarchy of APIs (mm/cma -> dma -> gem dma) calling them "GEM
DMA" seems to be more applicable.
Besides that, commit e57924d4ae80 ("drm/doc: Task to rename CMA helpers")
requests to rename the CMA helpers and implies that people seem to be
confused about the naming.
In order to do this renaming the following script was used:
```
#!/bin/bash
DIRS="drivers/gpu include/drm Documentation/gpu"
REGEX_SYM_UPPER="[0-9A-Z_\-]"
REGEX_SYM_LOWER="[0-9a-z_\-]"
REGEX_GREP_UPPER="(${REGEX_SYM_UPPER}*)(GEM)_CMA_(${REGEX_SYM_UPPER}*)"
REGEX_GREP_LOWER="(${REGEX_SYM_LOWER}*)(gem)_cma_(${REGEX_SYM_LOWER}*)"
REGEX_SED_UPPER="s/${REGEX_GREP_UPPER}/\1\2_DMA_\3/g"
REGEX_SED_LOWER="s/${REGEX_GREP_LOWER}/\1\2_dma_\3/g"
# Find all upper case 'CMA' symbols and replace them with 'DMA'.
for ff in $(grep -REHl "${REGEX_GREP_UPPER}" $DIRS)
do
sed -i -E "$REGEX_SED_UPPER" $ff
done
# Find all lower case 'cma' symbols and replace them with 'dma'.
for ff in $(grep -REHl "${REGEX_GREP_LOWER}" $DIRS)
do
sed -i -E "$REGEX_SED_LOWER" $ff
done
# Replace all occurrences of 'CMA' / 'cma' in comments and
# documentation files with 'DMA' / 'dma'.
for ff in $(grep -RiHl " cma " $DIRS)
do
sed -i -E "s/ cma / dma /g" $ff
sed -i -E "s/ CMA / DMA /g" $ff
done
# Rename all 'cma_obj's to 'dma_obj'.
for ff in $(grep -RiHl "cma_obj" $DIRS)
do
sed -i -E "s/cma_obj/dma_obj/g" $ff
done
```
Only a few more manual modifications were needed, e.g. reverting the
following modifications in some DRM Kconfig files
- select CMA if HAVE_DMA_CONTIGUOUS
+ select DMA if HAVE_DMA_CONTIGUOUS
as well as manually picking the occurrences of 'CMA'/'cma' in comments and
documentation which relate to "GEM CMA", but not "FB CMA".
Also drivers/gpu/drm/Makefile was fixed up manually after renaming
drm_gem_cma_helper.c to drm_gem_dma_helper.c.
This patch is compile-time tested building a x86_64 kernel with
`make allyesconfig && make drivers/gpu/drm`.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> #drivers/gpu/drm/arm
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-4-dakr@redhat.com
256 lines
6.4 KiB
C
256 lines
6.4 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_atomic_helper.h>
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <drm/drm_gem_atomic_helper.h>
|
|
#include <drm/drm_gem_dma_helper.h>
|
|
#include <drm/drm_managed.h>
|
|
#include <drm/drm_mipi_dbi.h>
|
|
#include <drm/drm_modeset_helper.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 mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
|
|
struct mipi_dbi *dbi = &dbidev->dbi;
|
|
u8 addr_mode;
|
|
int ret, idx;
|
|
|
|
if (!drm_dev_enter(pipe->crtc.dev, &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_DISPLAY_OFF);
|
|
|
|
mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0xc1, 0x30);
|
|
mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
|
|
mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x00, 0x78);
|
|
mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
|
|
mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
|
|
mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
|
|
|
|
/* Power Control */
|
|
mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x23);
|
|
mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x10);
|
|
/* VCOM */
|
|
mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x3e, 0x28);
|
|
mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0x86);
|
|
|
|
/* Memory Access Control */
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
|
|
|
|
/* Frame Rate */
|
|
mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
|
|
|
|
/* Gamma */
|
|
mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x00);
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
|
|
mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
|
|
0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
|
|
0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
|
|
mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
|
|
0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
|
|
0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
|
|
|
|
/* DDRAM */
|
|
mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
|
|
|
|
/* Display */
|
|
mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x08, 0x82, 0x27, 0x00);
|
|
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 = 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(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
|
|
mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
|
|
out_exit:
|
|
drm_dev_exit(idx);
|
|
}
|
|
|
|
static const struct drm_simple_display_pipe_funcs ili9341_pipe_funcs = {
|
|
.enable = yx240qv29_enable,
|
|
.disable = mipi_dbi_pipe_disable,
|
|
.update = mipi_dbi_pipe_update,
|
|
};
|
|
|
|
static const struct drm_display_mode yx240qv29_mode = {
|
|
DRM_SIMPLE_MODE(240, 320, 37, 49),
|
|
};
|
|
|
|
DEFINE_DRM_GEM_DMA_FOPS(ili9341_fops);
|
|
|
|
static const struct drm_driver ili9341_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
|
|
.fops = &ili9341_fops,
|
|
DRM_GEM_DMA_DRIVER_OPS_VMAP,
|
|
.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_dev *dbidev;
|
|
struct drm_device *drm;
|
|
struct mipi_dbi *dbi;
|
|
struct gpio_desc *dc;
|
|
u32 rotation = 0;
|
|
int ret;
|
|
|
|
dbidev = devm_drm_dev_alloc(dev, &ili9341_driver,
|
|
struct mipi_dbi_dev, drm);
|
|
if (IS_ERR(dbidev))
|
|
return PTR_ERR(dbidev);
|
|
|
|
dbi = &dbidev->dbi;
|
|
drm = &dbidev->drm;
|
|
|
|
dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(dbi->reset))
|
|
return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n");
|
|
|
|
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
|
|
if (IS_ERR(dc))
|
|
return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
|
|
|
|
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 = mipi_dbi_dev_init(dbidev, &ili9341_pipe_funcs, &yx240qv29_mode, rotation);
|
|
if (ret)
|
|
return ret;
|
|
|
|
drm_mode_config_reset(drm);
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spi_set_drvdata(spi, drm);
|
|
|
|
drm_fbdev_generic_setup(drm, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ili9341_remove(struct spi_device *spi)
|
|
{
|
|
struct drm_device *drm = spi_get_drvdata(spi);
|
|
|
|
drm_dev_unplug(drm);
|
|
drm_atomic_helper_shutdown(drm);
|
|
}
|
|
|
|
static void ili9341_shutdown(struct spi_device *spi)
|
|
{
|
|
drm_atomic_helper_shutdown(spi_get_drvdata(spi));
|
|
}
|
|
|
|
static struct spi_driver ili9341_spi_driver = {
|
|
.driver = {
|
|
.name = "ili9341",
|
|
.of_match_table = ili9341_of_match,
|
|
},
|
|
.id_table = ili9341_id,
|
|
.probe = ili9341_probe,
|
|
.remove = ili9341_remove,
|
|
.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");
|