Prepare the driver for additional panels with different
initialization.
Signed-off-by: Sebastian Reichel <s...@kernel.org>
---
.../gpu/drm/panel/panel-sitronix-st7789v.c | 110 +++++++++++-------
1 file changed, 67 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index 1d43b8cc1647..a62a2f5737e4 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -108,8 +108,16 @@
return val; \
} while (0)
+struct st7789v;
+
+struct st7789_panel_info {
+ const struct drm_display_mode *mode;
+ int (*init_sequence)(struct st7789v *ctx);
+};
+
struct st7789v {
struct drm_panel panel;
+ const struct st7789_panel_info *info;
struct spi_device *spi;
struct gpio_desc *reset;
struct regulator *power;
@@ -162,51 +170,13 @@ static const struct drm_display_mode default_mode = {
.vsync_start = 320 + 8,
.vsync_end = 320 + 8 + 4,
.vtotal = 320 + 8 + 4 + 4,
+ .width_mm = 61,
+ .height_mm = 103,
};
-static int st7789v_get_modes(struct drm_panel *panel,
- struct drm_connector *connector)
-{
- struct drm_display_mode *mode;
-
- mode = drm_mode_duplicate(connector->dev, &default_mode);
- if (!mode) {
- dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
- default_mode.hdisplay, default_mode.vdisplay,
- drm_mode_vrefresh(&default_mode));
- return -ENOMEM;
- }
-
- drm_mode_set_name(mode);
-
- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
- drm_mode_probed_add(connector, mode);
-
- connector->display_info.width_mm = 61;
- connector->display_info.height_mm = 103;
-
- return 1;
-}
-
-static int st7789v_prepare(struct drm_panel *panel)
-{
- struct st7789v *ctx = panel_to_st7789v(panel);
+static int init_sequence_default(struct st7789v *ctx) {
int ret;
- ret = regulator_enable(ctx->power);
- if (ret)
- return ret;
-
- gpiod_set_value(ctx->reset, 1);
- msleep(30);
- gpiod_set_value(ctx->reset, 0);
- msleep(120);
-
- ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_EXIT_SLEEP_MODE));
-
- /* We need to wait 120ms after a sleep out command */
- msleep(120);
-
ST7789V_TEST(ret, st7789v_write_command(ctx,
MIPI_DCS_SET_ADDRESS_MODE));
ST7789V_TEST(ret, st7789v_write_data(ctx, 0));
@@ -313,6 +283,58 @@ static int st7789v_prepare(struct drm_panel *panel)
return 0;
}
+struct st7789_panel_info default_panel = {
+ .mode = &default_mode,
+ .init_sequence = init_sequence_default,
+};
+
+static int st7789v_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct st7789v *ctx = panel_to_st7789v(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, ctx->info->mode);
+ if (!mode) {
+ dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+ ctx->info->mode->hdisplay, ctx->info->mode->vdisplay,
+ drm_mode_vrefresh(ctx->info->mode));
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ connector->display_info.width_mm = ctx->info->mode->width_mm;
+ connector->display_info.height_mm = ctx->info->mode->height_mm;
+
+ return 1;
+}
+
+static int st7789v_prepare(struct drm_panel *panel)
+{
+ struct st7789v *ctx = panel_to_st7789v(panel);
+ int ret;
+
+ ret = regulator_enable(ctx->power);
+ if (ret)
+ return ret;
+
+ gpiod_set_value(ctx->reset, 1);
+ msleep(30);
+ gpiod_set_value(ctx->reset, 0);
+ msleep(120);
+
+ ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_EXIT_SLEEP_MODE));
+
+ /* We need to wait 120ms after a sleep out command */
+ msleep(120);
+
+ return ctx->info->init_sequence(ctx);
+}
+
static int st7789v_enable(struct drm_panel *panel)
{
struct st7789v *ctx = panel_to_st7789v(panel);
@@ -362,6 +384,8 @@ static int st7789v_probe(struct spi_device *spi)
spi_set_drvdata(spi, ctx);
ctx->spi = spi;
+ ctx->info = device_get_match_data(&spi->dev);
+
drm_panel_init(&ctx->panel, &spi->dev, &st7789v_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
@@ -392,13 +416,13 @@ static void st7789v_remove(struct spi_device *spi)
}
static const struct spi_device_id st7789v_spi_id[] = {
- { "st7789v" },
+ { "st7789v", (unsigned long) &default_panel },
{ }
};
MODULE_DEVICE_TABLE(spi, st7789v_spi_id);
static const struct of_device_id st7789v_of_match[] = {
- { .compatible = "sitronix,st7789v" },
+ { .compatible = "sitronix,st7789v", .data = &default_panel },
{ }
};
MODULE_DEVICE_TABLE(of, st7789v_of_match);
--
2.39.2
