drm/panel: Add driver for the AUO A030JTN01 TFT LCD
Add driver for the AUO A030JTN01 panel, which is a 320x480 3.0" 4:3 24-bit TFT LCD panel with non-square pixels and a delta-RGB 8-bit interface. Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230121162419.284523-3-cbranchereau@gmail.com
This commit is contained in:
Christophe Branchereau
Paul Cercueil
parent
35b9dca562
commit
6febdb2491
@ -37,6 +37,14 @@ config DRM_PANEL_ASUS_Z00T_TM5P5_NT35596
|
||||
NT35596 1080x1920 video mode panel as found in some Asus
|
||||
Zenfone 2 Laser Z00T devices.
|
||||
|
||||
config DRM_PANEL_AUO_A030JTN01
|
||||
tristate "AUO A030JTN01"
|
||||
depends on SPI
|
||||
select REGMAP_SPI
|
||||
help
|
||||
Say Y here to enable support for the AUO A030JTN01 320x480 3.0" panel
|
||||
as found in the YLM RS-97 handheld gaming console.
|
||||
|
||||
config DRM_PANEL_BOE_BF060Y8M_AJ0
|
||||
tristate "Boe BF060Y8M-AJ0 panel"
|
||||
depends on OF
|
||||
|
||||
@ -2,6 +2,7 @@
|
||||
obj-$(CONFIG_DRM_PANEL_ABT_Y030XX067A) += panel-abt-y030xx067a.o
|
||||
obj-$(CONFIG_DRM_PANEL_ARM_VERSATILE) += panel-arm-versatile.o
|
||||
obj-$(CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596) += panel-asus-z00t-tm5p5-n35596.o
|
||||
obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o
|
||||
obj-$(CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0) += panel-boe-bf060y8m-aj0.o
|
||||
obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
|
||||
obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
|
||||
|
||||
308
drivers/gpu/drm/panel/panel-auo-a030jtn01.c
Normal file
308
drivers/gpu/drm/panel/panel-auo-a030jtn01.c
Normal file
@ -0,0 +1,308 @@
|
||||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* AU Optronics A030JTN01.0 TFT LCD panel driver
|
||||
*
|
||||
* Copyright (C) 2023, Paul Cercueil <paul@crapouillou.net>
|
||||
* Copyright (C) 2023, Christophe Branchereau <cbranchereau@gmail.com>
|
||||
*/
|
||||
|
||||
#include <linux/bitfield.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/gpio/consumer.h>
|
||||
#include <linux/media-bus-format.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/spi/spi.h>
|
||||
|
||||
#include <drm/drm_modes.h>
|
||||
#include <drm/drm_panel.h>
|
||||
|
||||
#define REG05 0x05
|
||||
#define REG06 0x06
|
||||
#define REG07 0x07
|
||||
|
||||
#define REG05_STDBY BIT(0)
|
||||
#define REG06_VBLK GENMASK(4, 0)
|
||||
#define REG07_HBLK GENMASK(7, 0)
|
||||
|
||||
|
||||
struct a030jtn01_info {
|
||||
const struct drm_display_mode *display_modes;
|
||||
unsigned int num_modes;
|
||||
u16 width_mm, height_mm;
|
||||
u32 bus_format, bus_flags;
|
||||
};
|
||||
|
||||
struct a030jtn01 {
|
||||
struct drm_panel panel;
|
||||
struct spi_device *spi;
|
||||
struct regmap *map;
|
||||
|
||||
const struct a030jtn01_info *panel_info;
|
||||
|
||||
struct regulator *supply;
|
||||
struct gpio_desc *reset_gpio;
|
||||
};
|
||||
|
||||
static inline struct a030jtn01 *to_a030jtn01(struct drm_panel *panel)
|
||||
{
|
||||
return container_of(panel, struct a030jtn01, panel);
|
||||
}
|
||||
|
||||
static int a030jtn01_prepare(struct drm_panel *panel)
|
||||
{
|
||||
struct a030jtn01 *priv = to_a030jtn01(panel);
|
||||
struct device *dev = &priv->spi->dev;
|
||||
unsigned int dummy;
|
||||
int err;
|
||||
|
||||
err = regulator_enable(priv->supply);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to enable power supply: %d\n", err);
|
||||
return err;
|
||||
}
|
||||
|
||||
usleep_range(1000, 8000);
|
||||
|
||||
/* Reset the chip */
|
||||
gpiod_set_value_cansleep(priv->reset_gpio, 1);
|
||||
usleep_range(100, 8000);
|
||||
gpiod_set_value_cansleep(priv->reset_gpio, 0);
|
||||
usleep_range(2000, 8000);
|
||||
|
||||
/*
|
||||
* No idea why, but a register read (doesn't matter which) is needed to
|
||||
* properly initialize the chip after a reset; otherwise, the colors
|
||||
* will be wrong. It doesn't seem to be timing-related as a msleep(200)
|
||||
* doesn't fix it.
|
||||
*/
|
||||
err = regmap_read(priv->map, REG05, &dummy);
|
||||
if (err)
|
||||
goto err_disable_regulator;
|
||||
|
||||
/* Use (24 + 6) == 0x1e as the vertical back porch */
|
||||
err = regmap_write(priv->map, REG06, FIELD_PREP(REG06_VBLK, 0x1e));
|
||||
if (err)
|
||||
goto err_disable_regulator;
|
||||
|
||||
/* Use (42 + 30) * 3 == 0xd8 as the horizontal back porch */
|
||||
err = regmap_write(priv->map, REG07, FIELD_PREP(REG07_HBLK, 0xd8));
|
||||
if (err)
|
||||
goto err_disable_regulator;
|
||||
|
||||
return 0;
|
||||
|
||||
err_disable_regulator:
|
||||
gpiod_set_value_cansleep(priv->reset_gpio, 1);
|
||||
regulator_disable(priv->supply);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int a030jtn01_unprepare(struct drm_panel *panel)
|
||||
{
|
||||
struct a030jtn01 *priv = to_a030jtn01(panel);
|
||||
|
||||
gpiod_set_value_cansleep(priv->reset_gpio, 1);
|
||||
regulator_disable(priv->supply);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int a030jtn01_enable(struct drm_panel *panel)
|
||||
{
|
||||
struct a030jtn01 *priv = to_a030jtn01(panel);
|
||||
int ret;
|
||||
|
||||
ret = regmap_set_bits(priv->map, REG05, REG05_STDBY);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Wait for the picture to be stable */
|
||||
if (panel->backlight)
|
||||
msleep(100);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int a030jtn01_disable(struct drm_panel *panel)
|
||||
{
|
||||
struct a030jtn01 *priv = to_a030jtn01(panel);
|
||||
|
||||
return regmap_clear_bits(priv->map, REG05, REG05_STDBY);
|
||||
}
|
||||
|
||||
static int a030jtn01_get_modes(struct drm_panel *panel,
|
||||
struct drm_connector *connector)
|
||||
{
|
||||
struct a030jtn01 *priv = to_a030jtn01(panel);
|
||||
const struct a030jtn01_info *panel_info = priv->panel_info;
|
||||
struct drm_display_mode *mode;
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < panel_info->num_modes; i++) {
|
||||
mode = drm_mode_duplicate(connector->dev,
|
||||
&panel_info->display_modes[i]);
|
||||
if (!mode)
|
||||
return -ENOMEM;
|
||||
|
||||
drm_mode_set_name(mode);
|
||||
|
||||
mode->type = DRM_MODE_TYPE_DRIVER;
|
||||
if (panel_info->num_modes == 1)
|
||||
mode->type |= DRM_MODE_TYPE_PREFERRED;
|
||||
|
||||
drm_mode_probed_add(connector, mode);
|
||||
}
|
||||
|
||||
connector->display_info.bpc = 8;
|
||||
connector->display_info.width_mm = panel_info->width_mm;
|
||||
connector->display_info.height_mm = panel_info->height_mm;
|
||||
|
||||
drm_display_info_set_bus_formats(&connector->display_info,
|
||||
&panel_info->bus_format, 1);
|
||||
connector->display_info.bus_flags = panel_info->bus_flags;
|
||||
|
||||
return panel_info->num_modes;
|
||||
}
|
||||
|
||||
static const struct drm_panel_funcs a030jtn01_funcs = {
|
||||
.prepare = a030jtn01_prepare,
|
||||
.unprepare = a030jtn01_unprepare,
|
||||
.enable = a030jtn01_enable,
|
||||
.disable = a030jtn01_disable,
|
||||
.get_modes = a030jtn01_get_modes,
|
||||
};
|
||||
|
||||
static bool a030jtn01_has_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
static const u32 a030jtn01_regs_mask = 0x001823f1fb;
|
||||
|
||||
return a030jtn01_regs_mask & BIT(reg);
|
||||
};
|
||||
|
||||
static const struct regmap_config a030jtn01_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.read_flag_mask = 0x40,
|
||||
.max_register = 0x1c,
|
||||
.readable_reg = a030jtn01_has_reg,
|
||||
.writeable_reg = a030jtn01_has_reg,
|
||||
};
|
||||
|
||||
static int a030jtn01_probe(struct spi_device *spi)
|
||||
{
|
||||
struct device *dev = &spi->dev;
|
||||
struct a030jtn01 *priv;
|
||||
int err;
|
||||
|
||||
spi->mode |= SPI_MODE_3 | SPI_3WIRE;
|
||||
|
||||
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->spi = spi;
|
||||
spi_set_drvdata(spi, priv);
|
||||
|
||||
priv->map = devm_regmap_init_spi(spi, &a030jtn01_regmap_config);
|
||||
if (IS_ERR(priv->map))
|
||||
return dev_err_probe(dev, PTR_ERR(priv->map), "Unable to init regmap");
|
||||
|
||||
priv->panel_info = spi_get_device_match_data(spi);
|
||||
if (!priv->panel_info)
|
||||
return -EINVAL;
|
||||
|
||||
priv->supply = devm_regulator_get(dev, "power");
|
||||
if (IS_ERR(priv->supply))
|
||||
return dev_err_probe(dev, PTR_ERR(priv->supply), "Failed to get power supply");
|
||||
|
||||
priv->reset_gpio = devm_gpiod_get(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 GPIO");
|
||||
|
||||
drm_panel_init(&priv->panel, dev, &a030jtn01_funcs,
|
||||
DRM_MODE_CONNECTOR_DPI);
|
||||
|
||||
err = drm_panel_of_backlight(&priv->panel);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
drm_panel_add(&priv->panel);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void a030jtn01_remove(struct spi_device *spi)
|
||||
{
|
||||
struct a030jtn01 *priv = spi_get_drvdata(spi);
|
||||
|
||||
drm_panel_remove(&priv->panel);
|
||||
drm_panel_disable(&priv->panel);
|
||||
drm_panel_unprepare(&priv->panel);
|
||||
}
|
||||
|
||||
static const struct drm_display_mode a030jtn01_modes[] = {
|
||||
{ /* 60 Hz */
|
||||
.clock = 14400,
|
||||
.hdisplay = 320,
|
||||
.hsync_start = 320 + 8,
|
||||
.hsync_end = 320 + 8 + 42,
|
||||
.htotal = 320 + 8 + 42 + 30,
|
||||
.vdisplay = 480,
|
||||
.vsync_start = 480 + 90,
|
||||
.vsync_end = 480 + 90 + 24,
|
||||
.vtotal = 480 + 90 + 24 + 6,
|
||||
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
|
||||
},
|
||||
{ /* 50 Hz */
|
||||
.clock = 12000,
|
||||
.hdisplay = 320,
|
||||
.hsync_start = 320 + 8,
|
||||
.hsync_end = 320 + 8 + 42,
|
||||
.htotal = 320 + 8 + 42 + 30,
|
||||
.vdisplay = 480,
|
||||
.vsync_start = 480 + 90,
|
||||
.vsync_end = 480 + 90 + 24,
|
||||
.vtotal = 480 + 90 + 24 + 6,
|
||||
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct a030jtn01_info a030jtn01_info = {
|
||||
.display_modes = a030jtn01_modes,
|
||||
.num_modes = ARRAY_SIZE(a030jtn01_modes),
|
||||
.width_mm = 70,
|
||||
.height_mm = 51,
|
||||
.bus_format = MEDIA_BUS_FMT_RGB888_3X8_DELTA,
|
||||
.bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
|
||||
};
|
||||
|
||||
static const struct spi_device_id a030jtn01_id[] = {
|
||||
{ "a030jtn01", (kernel_ulong_t) &a030jtn01_info },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(spi, a030jtn01_id);
|
||||
|
||||
static const struct of_device_id a030jtn01_of_match[] = {
|
||||
{ .compatible = "auo,a030jtn01" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, a030jtn01_of_match);
|
||||
|
||||
static struct spi_driver a030jtn01_driver = {
|
||||
.driver = {
|
||||
.name = "auo-a030jtn01",
|
||||
.of_match_table = a030jtn01_of_match,
|
||||
},
|
||||
.id_table = a030jtn01_id,
|
||||
.probe = a030jtn01_probe,
|
||||
.remove = a030jtn01_remove,
|
||||
};
|
||||
module_spi_driver(a030jtn01_driver);
|
||||
|
||||
MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
|
||||
MODULE_AUTHOR("Christophe Branchereau <cbranchereau@gmail.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
x
Reference in New Issue
Block a user