[PATCH v2 3/6] drm/panel: mantix: Allow to specify default mode for different panels

From: Guido Günther
Date: Wed Nov 18 2020 - 03:30:23 EST


This can be used to use different modes for differnt panels via OF
device match.

Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
.../gpu/drm/panel/panel-mantix-mlaf057we51.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
index 624d17b96a69..b057857165b0 100644
--- a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
+++ b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
@@ -9,6 +9,7 @@
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/regulator/consumer.h>

#include <video/mipi_display.h>
@@ -34,6 +35,8 @@ struct mantix {
struct regulator *avdd;
struct regulator *avee;
struct regulator *vddi;
+
+ const struct drm_display_mode *default_mode;
};

static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
@@ -187,7 +190,7 @@ static int mantix_prepare(struct drm_panel *panel)
return 0;
}

-static const struct drm_display_mode default_mode = {
+static const struct drm_display_mode default_mode_mantix = {
.hdisplay = 720,
.hsync_start = 720 + 45,
.hsync_end = 720 + 45 + 14,
@@ -208,11 +211,11 @@ static int mantix_get_modes(struct drm_panel *panel,
struct mantix *ctx = panel_to_mantix(panel);
struct drm_display_mode *mode;

- mode = drm_mode_duplicate(connector->dev, &default_mode);
+ mode = drm_mode_duplicate(connector->dev, ctx->default_mode);
if (!mode) {
dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
- default_mode.hdisplay, default_mode.vdisplay,
- drm_mode_vrefresh(&default_mode));
+ ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
+ drm_mode_vrefresh(ctx->default_mode));
return -ENOMEM;
}

@@ -243,6 +246,7 @@ static int mantix_probe(struct mipi_dsi_device *dsi)
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
+ ctx->default_mode = of_device_get_match_data(dev);

ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
@@ -293,8 +297,8 @@ static int mantix_probe(struct mipi_dsi_device *dsi)
}

dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
- default_mode.hdisplay, default_mode.vdisplay,
- drm_mode_vrefresh(&default_mode),
+ ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,
+ drm_mode_vrefresh(ctx->default_mode),
mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);

return 0;
@@ -321,7 +325,7 @@ static int mantix_remove(struct mipi_dsi_device *dsi)
}

static const struct of_device_id mantix_of_match[] = {
- { .compatible = "mantix,mlaf057we51-x" },
+ { .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mantix_of_match);
--
2.29.2