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drm/panel: Add Sharp Y030XX067A 3.0" 320x480 panel
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
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// SPDX-License-Identifier: GPL-2.0 | ||
/* | ||
* Sharp Y030XX067A IPS LCD panel driver | ||
* | ||
* Copyright (C) 2020, Paul Cercueil <paul@crapouillou.net> | ||
*/ | ||
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#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> | ||
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#include <drm/drm_modes.h> | ||
#include <drm/drm_panel.h> | ||
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#include <video/mipi_display.h> | ||
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struct y030xx067a_info { | ||
const struct drm_display_mode *display_modes; | ||
unsigned int num_modes; | ||
u16 width_mm, height_mm; | ||
u32 bus_format, bus_flags; | ||
}; | ||
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struct y030xx067a { | ||
struct drm_panel panel; | ||
struct spi_device *spi; | ||
struct regmap *map; | ||
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const struct y030xx067a_info *panel_info; | ||
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struct regulator *supply; | ||
struct gpio_desc *reset_gpio; | ||
}; | ||
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static inline struct y030xx067a *to_y030xx067a(struct drm_panel *panel) | ||
{ | ||
return container_of(panel, struct y030xx067a, panel); | ||
} | ||
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static const struct reg_sequence y030xx067a_init_sequence[] = { | ||
{ 0x02, 0x7f, }, | ||
{ 0x03, 0x0a, }, | ||
{ 0x04, 0x80, }, | ||
{ 0x06, 0x90, }, | ||
{ 0x08, 0x28, }, | ||
{ 0x09, 0x20, }, | ||
{ 0x0a, 0x20, }, | ||
{ 0x0c, 0x10, }, | ||
{ 0x0d, 0x10, }, | ||
{ 0x0e, 0x90, }, | ||
{ 0x10, 0x7f, }, | ||
{ 0x11, 0x3f, }, | ||
}; | ||
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static int y030xx067a_prepare(struct drm_panel *panel) | ||
{ | ||
struct y030xx067a *priv = to_y030xx067a(panel); | ||
struct device *dev = &priv->spi->dev; | ||
int err; | ||
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err = regulator_enable(priv->supply); | ||
if (err) { | ||
dev_err(dev, "Failed to enable power supply: %d\n", err); | ||
return err; | ||
} | ||
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/* Reset the chip */ | ||
gpiod_set_value_cansleep(priv->reset_gpio, 1); | ||
usleep_range(1000, 20000); | ||
gpiod_set_value_cansleep(priv->reset_gpio, 0); | ||
usleep_range(1000, 20000); | ||
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err = regmap_multi_reg_write(priv->map, y030xx067a_init_sequence, | ||
ARRAY_SIZE(y030xx067a_init_sequence)); | ||
if (err) { | ||
dev_err(dev, "Failed to init registers: %d\n", err); | ||
goto err_disable_regulator; | ||
} | ||
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return 0; | ||
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err_disable_regulator: | ||
regulator_disable(priv->supply); | ||
return err; | ||
} | ||
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static int y030xx067a_unprepare(struct drm_panel *panel) | ||
{ | ||
struct y030xx067a *priv = to_y030xx067a(panel); | ||
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gpiod_set_value_cansleep(priv->reset_gpio, 1); | ||
regulator_disable(priv->supply); | ||
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return 0; | ||
} | ||
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static int y030xx067a_get_modes(struct drm_panel *panel, | ||
struct drm_connector *connector) | ||
{ | ||
struct y030xx067a *priv = to_y030xx067a(panel); | ||
const struct y030xx067a_info *panel_info = priv->panel_info; | ||
struct drm_display_mode *mode; | ||
unsigned int i; | ||
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for (i = 0; i < panel_info->num_modes; i++) { | ||
mode = drm_mode_duplicate(connector->dev, | ||
&panel_info->display_modes[i]); | ||
if (!mode) | ||
return -ENOMEM; | ||
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drm_mode_set_name(mode); | ||
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mode->type = DRM_MODE_TYPE_DRIVER; | ||
if (panel_info->num_modes == 1) | ||
mode->type |= DRM_MODE_TYPE_PREFERRED; | ||
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drm_mode_probed_add(connector, mode); | ||
} | ||
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connector->display_info.bpc = 6; | ||
connector->display_info.width_mm = panel_info->width_mm; | ||
connector->display_info.height_mm = panel_info->height_mm; | ||
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drm_display_info_set_bus_formats(&connector->display_info, | ||
&panel_info->bus_format, 1); | ||
connector->display_info.bus_flags = panel_info->bus_flags; | ||
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return panel_info->num_modes; | ||
} | ||
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static const struct drm_panel_funcs y030xx067a_funcs = { | ||
.prepare = y030xx067a_prepare, | ||
.unprepare = y030xx067a_unprepare, | ||
.get_modes = y030xx067a_get_modes, | ||
}; | ||
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static const struct regmap_config y030xx067a_regmap_config = { | ||
.reg_bits = 8, | ||
.val_bits = 8, | ||
.max_register = 0x15, | ||
}; | ||
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static int y030xx067a_probe(struct spi_device *spi) | ||
{ | ||
struct device *dev = &spi->dev; | ||
struct y030xx067a *priv; | ||
int err; | ||
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | ||
if (!priv) | ||
return -ENOMEM; | ||
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priv->spi = spi; | ||
spi_set_drvdata(spi, priv); | ||
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priv->map = devm_regmap_init_spi(spi, &y030xx067a_regmap_config); | ||
if (IS_ERR(priv->map)) { | ||
dev_err(dev, "Unable to init regmap\n"); | ||
return PTR_ERR(priv->map); | ||
} | ||
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priv->panel_info = of_device_get_match_data(dev); | ||
if (!priv->panel_info) | ||
return -EINVAL; | ||
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priv->supply = devm_regulator_get(dev, "power"); | ||
if (IS_ERR(priv->supply)) { | ||
dev_err(dev, "Failed to get power supply\n"); | ||
return PTR_ERR(priv->supply); | ||
} | ||
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priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); | ||
if (IS_ERR(priv->reset_gpio)) { | ||
dev_err(dev, "Failed to get reset GPIO\n"); | ||
return PTR_ERR(priv->reset_gpio); | ||
} | ||
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drm_panel_init(&priv->panel, dev, &y030xx067a_funcs, | ||
DRM_MODE_CONNECTOR_DPI); | ||
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err = drm_panel_of_backlight(&priv->panel); | ||
if (err) | ||
return err; | ||
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err = drm_panel_add(&priv->panel); | ||
if (err < 0) { | ||
dev_err(dev, "Failed to add panel\n"); | ||
return err; | ||
} | ||
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return 0; | ||
} | ||
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static int y030xx067a_remove(struct spi_device *spi) | ||
{ | ||
struct y030xx067a *priv = spi_get_drvdata(spi); | ||
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drm_panel_remove(&priv->panel); | ||
drm_panel_disable(&priv->panel); | ||
drm_panel_unprepare(&priv->panel); | ||
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return 0; | ||
} | ||
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static const struct drm_display_mode y030xx067a_modes[] = { | ||
{ | ||
.clock = 54000, | ||
.hdisplay = 320, | ||
.hsync_start = 320 + 128, | ||
.hsync_end = 320 + 128 + 28, | ||
.htotal = 320 + 128 + 28 + 25, | ||
.vdisplay = 480, | ||
.vsync_start = 480 + 36, | ||
.vsync_end = 480 + 36 + 1, | ||
.vtotal = 480 + 36 + 1 + 16, | ||
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, | ||
}, | ||
}; | ||
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static const struct y030xx067a_info y030xx067a_info = { | ||
.display_modes = y030xx067a_modes, | ||
.num_modes = ARRAY_SIZE(y030xx067a_modes), | ||
.width_mm = 69, | ||
.height_mm = 51, | ||
.bus_format = MEDIA_BUS_FMT_RGB565_2X8_LE, | ||
.bus_flags = 0, | ||
}; | ||
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static const struct of_device_id y030xx067a_of_match[] = { | ||
{ .compatible = "sharp,y030xx067a", .data = &y030xx067a_info }, | ||
{ /* sentinel */ } | ||
}; | ||
MODULE_DEVICE_TABLE(of, y030xx067a_of_match); | ||
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static struct spi_driver y030xx067a_driver = { | ||
.driver = { | ||
.name = "sharp-y030xx067a", | ||
.of_match_table = y030xx067a_of_match, | ||
}, | ||
.probe = y030xx067a_probe, | ||
.remove = y030xx067a_remove, | ||
}; | ||
module_spi_driver(y030xx067a_driver); | ||
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MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>"); | ||
MODULE_LICENSE("GPL v2"); |