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drm/panel: visionox-rm69299: add plumbing to support panel variants

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In order to support a panel variant, add plumbing code to pass
init sequence and mode as compatible data.

Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250509-topic-misc-shift6-panel-v2-2-c2c2d52abd51@linaro.org
This commit is contained in:
Neil Armstrong
2025-05-09 10:59:40 +02:00
parent 9c59059fcf
commit 01a2c6756b
1 changed files with 32 additions and 26 deletions
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58
drivers/gpu/drm/panel/panel-visionox-rm69299.c
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@@ -5,6 +5,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/mod_devicetable.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
@@ -15,11 +16,22 @@
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
struct visionox_rm69299_panel_desc {
const struct drm_display_mode *mode;
const u8 *init_seq;
unsigned int init_seq_len;
};
struct visionox_rm69299 {
struct drm_panel panel;
struct regulator_bulk_data supplies[2];
struct gpio_desc *reset_gpio;
struct mipi_dsi_device *dsi;
const struct visionox_rm69299_panel_desc *desc;
};
static const u8 visionox_rm69299_1080x2248_60hz_init_seq[][2] = {
{ 0xfe, 0x00 }, { 0xc2, 0x08 }, { 0x35, 0x00 }, { 0x51, 0xff },
};
static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel)
@@ -84,7 +96,7 @@ static int visionox_rm69299_unprepare(struct drm_panel *panel)
static int visionox_rm69299_prepare(struct drm_panel *panel)
{
struct visionox_rm69299 *ctx = panel_to_ctx(panel);
int ret;
int ret, i;
ret = visionox_rm69299_power_on(ctx);
if (ret < 0)
@@ -92,28 +104,12 @@ static int visionox_rm69299_prepare(struct drm_panel *panel)
ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0xfe, 0x00 }, 2);
if (ret < 0) {
dev_err(ctx->panel.dev, "cmd set tx 0 failed, ret = %d\n", ret);
goto power_off;
}
ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0xc2, 0x08 }, 2);
if (ret < 0) {
dev_err(ctx->panel.dev, "cmd set tx 1 failed, ret = %d\n", ret);
goto power_off;
}
ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0x35, 0x00 }, 2);
if (ret < 0) {
dev_err(ctx->panel.dev, "cmd set tx 2 failed, ret = %d\n", ret);
goto power_off;
}
ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0x51, 0xff }, 2);
if (ret < 0) {
dev_err(ctx->panel.dev, "cmd set tx 3 failed, ret = %d\n", ret);
goto power_off;
for (i = 0; i < ctx->desc->init_seq_len; i++) {
ret = mipi_dsi_dcs_write_buffer(ctx->dsi, &ctx->desc->init_seq[i * 2], 2);
if (ret < 0) {
dev_err(ctx->panel.dev, "cmd tx failed, ret = %d\n", ret);
return ret;
}
}
ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_EXIT_SLEEP_MODE, NULL, 0);
@@ -160,8 +156,7 @@ static int visionox_rm69299_get_modes(struct drm_panel *panel,
struct visionox_rm69299 *ctx = panel_to_ctx(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev,
&visionox_rm69299_1080x2248_60hz);
mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
if (!mode) {
dev_err(ctx->panel.dev, "failed to create a new display mode\n");
return 0;
@@ -193,6 +188,10 @@ static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
if (IS_ERR(ctx))
return PTR_ERR(ctx);
ctx->desc = device_get_match_data(dev);
if (!ctx->desc)
return -EINVAL;
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dsi = dsi;
@@ -239,8 +238,15 @@ static void visionox_rm69299_remove(struct mipi_dsi_device *dsi)
drm_panel_remove(&ctx->panel);
}
const struct visionox_rm69299_panel_desc visionox_rm69299_1080p_display_desc = {
.mode = &visionox_rm69299_1080x2248_60hz,
.init_seq = (const u8 *)visionox_rm69299_1080x2248_60hz_init_seq,
.init_seq_len = ARRAY_SIZE(visionox_rm69299_1080x2248_60hz_init_seq),
};
static const struct of_device_id visionox_rm69299_of_match[] = {
{ .compatible = "visionox,rm69299-1080p-display", },
{ .compatible = "visionox,rm69299-1080p-display",
.data = &visionox_rm69299_1080p_display_desc },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, visionox_rm69299_of_match);