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linux/drivers/gpu/drm/panel/panel-visionox-r66451.c
Jessica Zhang bb3bc3eac3 drm/panel: visionox-r66451: Set prepare_prev_first flag 
The DSI host needs to be enabled for the panel to be initialized in
prepare(). Ensure this happens by setting prepare_prev_first.

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240202-visionox-r66451-prev-first-v1-1-c267dc889284@quicinc.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240202-visionox-r66451-prev-first-v1-1-c267dc889284@quicinc.com
2024-02-05 11:03:35 +01:00

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//SPDX-License-Identifier: GPL-2.0-only
//Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <drm/display/drm_dsc.h>
#include <drm/display/drm_dsc_helper.h>
#include <video/mipi_display.h>
struct visionox_r66451 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct gpio_desc *reset_gpio;
struct regulator_bulk_data supplies[2];
};
static inline struct visionox_r66451 *to_visionox_r66451(struct drm_panel *panel)
{
return container_of(panel, struct visionox_r66451, panel);
}
static void visionox_r66451_reset(struct visionox_r66451 *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 10100);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(10000, 10100);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 10100);
}
static int visionox_r66451_on(struct visionox_r66451 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xc2,
0x09, 0x24, 0x0c, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00,
0x09, 0x3c);
mipi_dsi_dcs_write_seq(dsi, 0xd7,
0x00, 0xb9, 0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
mipi_dsi_dcs_write_seq(dsi, 0xde,
0x40, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18,
0x10, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x02, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
mipi_dsi_dcs_write_seq(dsi, 0xe8, 0x00, 0x02);
mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x00, 0x08);
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xc4,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x32);
mipi_dsi_dcs_write_seq(dsi, 0xcf,
0x64, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
0x00, 0x0b, 0x77, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x02, 0x02, 0x02, 0x02, 0x03);
mipi_dsi_dcs_write_seq(dsi, 0xd3,
0x45, 0x00, 0x00, 0x01, 0x13, 0x15, 0x00, 0x15, 0x07,
0x0f, 0x77, 0x77, 0x77, 0x37, 0xb2, 0x11, 0x00, 0xa0,
0x3c, 0x9c);
mipi_dsi_dcs_write_seq(dsi, 0xd7,
0x00, 0xb9, 0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
mipi_dsi_dcs_write_seq(dsi, 0xd8,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a,
0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0a, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a,
0x00, 0x32, 0x00, 0x0a, 0x00, 0x22);
mipi_dsi_dcs_write_seq(dsi, 0xdf,
0x50, 0x42, 0x58, 0x81, 0x2d, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x0f, 0xff, 0xd4, 0x0e, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x0f, 0x53, 0xf1, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xf7, 0x01);
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x34, 0xb4, 0x00, 0x00, 0x00, 0x39, 0x04, 0x09, 0x34);
mipi_dsi_dcs_write_seq(dsi, 0xe6, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x40);
mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x50, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x11);
mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x01, 0x00, 0x00, 0x00, 0x01);
mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x00, 0x02);
mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x19);
mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x42);
mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
mipi_dsi_dcs_set_column_address(dsi, 0, 1080 - 1);
mipi_dsi_dcs_set_page_address(dsi, 0, 2340 - 1);
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
return 0;
}
static int visionox_r66451_off(struct visionox_r66451 *ctx)
{
ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
return 0;
}
static int visionox_r66451_prepare(struct drm_panel *panel)
{
struct visionox_r66451 *ctx = to_visionox_r66451(panel);
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
ctx->supplies);
if (ret < 0)
return ret;
visionox_r66451_reset(ctx);
ret = visionox_r66451_on(ctx);
if (ret < 0) {
dev_err(dev, "Failed to initialize panel: %d\n", ret);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
return ret;
}
mipi_dsi_compression_mode(ctx->dsi, true);
return 0;
}
static int visionox_r66451_unprepare(struct drm_panel *panel)
{
struct visionox_r66451 *ctx = to_visionox_r66451(panel);
struct device *dev = &ctx->dsi->dev;
int ret;
ret = visionox_r66451_off(ctx);
if (ret < 0)
dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
return 0;
}
static const struct drm_display_mode visionox_r66451_mode = {
.clock = 345830,
.hdisplay = 1080,
.hsync_start = 1175,
.hsync_end = 1176,
.htotal = 1216,
.vdisplay = 2340,
.vsync_start = 2365,
.vsync_end = 2366,
.vtotal = 2370,
.width_mm = 0,
.height_mm = 0,
.type = DRM_MODE_TYPE_DRIVER,
};
static int visionox_r66451_enable(struct drm_panel *panel)
{
struct visionox_r66451 *ctx = to_visionox_r66451(panel);
struct mipi_dsi_device *dsi = ctx->dsi;
struct drm_dsc_picture_parameter_set pps;
int ret;
if (!dsi->dsc) {
dev_err(&dsi->dev, "DSC not attached to DSI\n");
return -ENODEV;
}
drm_dsc_pps_payload_pack(&pps, dsi->dsc);
ret = mipi_dsi_picture_parameter_set(dsi, &pps);
if (ret) {
dev_err(&dsi->dev, "Failed to set PPS\n");
return ret;
}
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0) {
dev_err(&dsi->dev, "Failed to exit sleep mode: %d\n", ret);
return ret;
}
msleep(120);
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0) {
dev_err(&dsi->dev, "Failed on set display on: %d\n", ret);
return ret;
}
msleep(20);
return 0;
}
static int visionox_r66451_disable(struct drm_panel *panel)
{
struct visionox_r66451 *ctx = to_visionox_r66451(panel);
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display off: %d\n", ret);
return ret;
}
msleep(20);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
return ret;
}
msleep(120);
return 0;
}
static int visionox_r66451_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
drm_connector_helper_get_modes_fixed(connector, &visionox_r66451_mode);
return 1;
}
static const struct drm_panel_funcs visionox_r66451_funcs = {
.prepare = visionox_r66451_prepare,
.unprepare = visionox_r66451_unprepare,
.get_modes = visionox_r66451_get_modes,
.enable = visionox_r66451_enable,
.disable = visionox_r66451_disable,
};
static int visionox_r66451_bl_update_status(struct backlight_device *bl)
{
struct mipi_dsi_device *dsi = bl_get_data(bl);
u16 brightness = backlight_get_brightness(bl);
return mipi_dsi_dcs_set_display_brightness(dsi, brightness);
}
static const struct backlight_ops visionox_r66451_bl_ops = {
.update_status = visionox_r66451_bl_update_status,
};
static struct backlight_device *
visionox_r66451_create_backlight(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
const struct backlight_properties props = {
.type = BACKLIGHT_RAW,
.brightness = 255,
.max_brightness = 4095,
};
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
&visionox_r66451_bl_ops, &props);
}
static int visionox_r66451_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct visionox_r66451 *ctx;
struct drm_dsc_config *dsc;
int ret = 0;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
dsc = devm_kzalloc(dev, sizeof(*dsc), GFP_KERNEL);
if (!dsc)
return -ENOMEM;
/* Set DSC params */
dsc->dsc_version_major = 0x1;
dsc->dsc_version_minor = 0x2;
dsc->slice_height = 20;
dsc->slice_width = 540;
dsc->slice_count = 2;
dsc->bits_per_component = 8;
dsc->bits_per_pixel = 8 << 4;
dsc->block_pred_enable = true;
dsi->dsc = dsc;
ctx->supplies[0].supply = "vddio";
ctx->supplies[1].supply = "vdd";
ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
ctx->supplies);
if (ret < 0)
return ret;
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ctx->reset_gpio))
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset-gpios\n");
ctx->dsi = dsi;
mipi_dsi_set_drvdata(dsi, ctx);
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
ctx->panel.prepare_prev_first = true;
drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI);
ctx->panel.backlight = visionox_r66451_create_backlight(dsi);
if (IS_ERR(ctx->panel.backlight))
return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
"Failed to create backlight\n");
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
drm_panel_remove(&ctx->panel);
}
return ret;
}
static void visionox_r66451_remove(struct mipi_dsi_device *dsi)
{
struct visionox_r66451 *ctx = mipi_dsi_get_drvdata(dsi);
int ret;
ret = mipi_dsi_detach(dsi);
if (ret < 0)
dev_err(&dsi->dev, "Failed to detach DSI host: %d\n", ret);
drm_panel_remove(&ctx->panel);
}
static const struct of_device_id visionox_r66451_of_match[] = {
{.compatible = "visionox,r66451"},
{ /*sentinel*/ }
};
MODULE_DEVICE_TABLE(of, visionox_r66451_of_match);
static struct mipi_dsi_driver visionox_r66451_driver = {
.probe = visionox_r66451_probe,
.remove = visionox_r66451_remove,
.driver = {
.name = "panel-visionox-r66451",
.of_match_table = visionox_r66451_of_match,
},
};
module_mipi_dsi_driver(visionox_r66451_driver);
MODULE_AUTHOR("Jessica Zhang <quic_jesszhan@quicinc.com>");
MODULE_DESCRIPTION("Panel driver for the Visionox R66451 AMOLED DSI panel");
MODULE_LICENSE("GPL");
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