[PATCH v6 72/84] drm/panel: panel-dsi-cm: add panel database to driver
Tomi Valkeinen
tomi.valkeinen at ti.com
Tue Dec 15 10:46:45 UTC 2020
Add a panel database to the driver instead of reading propertes from DT
data. This is similar to panel-simple, and I believe it's more future
safe way to handle the panels.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
drivers/gpu/drm/panel/panel-dsi-cm.c | 104 +++++++++++++++++----------
1 file changed, 66 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-dsi-cm.c b/drivers/gpu/drm/panel/panel-dsi-cm.c
index f5240fd82459..c549329dc4b9 100644
--- a/drivers/gpu/drm/panel/panel-dsi-cm.c
+++ b/drivers/gpu/drm/panel/panel-dsi-cm.c
@@ -21,10 +21,7 @@
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
-#include <video/display_timing.h>
#include <video/mipi_display.h>
-#include <video/of_display_timing.h>
-#include <video/videomode.h>
#define DCS_GET_ID1 0xda
#define DCS_GET_ID2 0xdb
@@ -32,6 +29,18 @@
#define DCS_REGULATOR_SUPPLY_NUM 2
+static const struct of_device_id dsicm_of_match[];
+
+struct dsic_panel_data {
+ u32 xres;
+ u32 yres;
+ u32 refresh;
+ u32 width_mm;
+ u32 height_mm;
+ u32 max_hs_rate;
+ u32 max_lp_rate;
+};
+
struct panel_drv_data {
struct mipi_dsi_device *dsi;
struct drm_panel panel;
@@ -47,16 +56,14 @@ struct panel_drv_data {
*/
unsigned long hw_guard_wait; /* max guard time in jiffies */
- /* panel HW configuration from DT or platform data */
+ const struct dsic_panel_data *panel_data;
+
struct gpio_desc *reset_gpio;
struct regulator_bulk_data supplies[DCS_REGULATOR_SUPPLY_NUM];
bool use_dsi_backlight;
- int width_mm;
- int height_mm;
-
/* runtime variables */
bool enabled;
@@ -450,11 +457,8 @@ static int dsicm_get_modes(struct drm_panel *panel,
return -ENOMEM;
}
- drm_mode_set_name(mode);
- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-
- connector->display_info.width_mm = ddata->width_mm;
- connector->display_info.height_mm = ddata->height_mm;
+ connector->display_info.width_mm = ddata->panel_data->width_mm;
+ connector->display_info.height_mm = ddata->panel_data->height_mm;
drm_mode_probed_add(connector, mode);
@@ -471,15 +475,10 @@ static const struct drm_panel_funcs dsicm_panel_funcs = {
static int dsicm_probe_of(struct mipi_dsi_device *dsi)
{
- struct device_node *node = dsi->dev.of_node;
struct backlight_device *backlight;
struct panel_drv_data *ddata = mipi_dsi_get_drvdata(dsi);
- struct display_timing timing;
- struct videomode vm = {
- .hactive = 864,
- .vactive = 480,
- };
int err;
+ struct drm_display_mode *mode = &ddata->mode;
ddata->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ddata->reset_gpio)) {
@@ -488,23 +487,16 @@ static int dsicm_probe_of(struct mipi_dsi_device *dsi)
return err;
}
- err = of_get_display_timing(node, "panel-timing", &timing);
- if (!err) {
- videomode_from_timing(&timing, &vm);
- } else {
- dev_warn(&dsi->dev,
- "failed to get video timing, using defaults\n");
- }
-
- if (!vm.pixelclock)
- vm.pixelclock = vm.hactive * vm.vactive * 60;
- drm_display_mode_from_videomode(&vm, &ddata->mode);
-
- ddata->width_mm = 0;
- of_property_read_u32(node, "width-mm", &ddata->width_mm);
-
- ddata->height_mm = 0;
- of_property_read_u32(node, "height-mm", &ddata->height_mm);
+ mode->hdisplay = mode->hsync_start = mode->hsync_end = mode->htotal =
+ ddata->panel_data->xres;
+ mode->vdisplay = mode->vsync_start = mode->vsync_end = mode->vtotal =
+ ddata->panel_data->yres;
+ mode->clock = ddata->panel_data->xres * ddata->panel_data->yres *
+ ddata->panel_data->refresh / 1000;
+ mode->width_mm = ddata->panel_data->width_mm;
+ mode->height_mm = ddata->panel_data->height_mm;
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_set_name(mode);
ddata->supplies[0].supply = "vpnl";
ddata->supplies[1].supply = "vddi";
@@ -542,6 +534,10 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
mipi_dsi_set_drvdata(dsi, ddata);
ddata->dsi = dsi;
+ ddata->panel_data = of_device_get_match_data(dev);
+ if (!ddata->panel_data)
+ return -ENODEV;
+
r = dsicm_probe_of(dsi);
if (r)
return r;
@@ -578,8 +574,8 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS |
MIPI_DSI_MODE_EOT_PACKET;
- dsi->hs_rate = 300000000;
- dsi->lp_rate = 10000000;
+ dsi->hs_rate = ddata->panel_data->max_hs_rate;
+ dsi->lp_rate = ddata->panel_data->max_lp_rate;
drm_panel_add(&ddata->panel);
@@ -617,8 +613,40 @@ static int dsicm_remove(struct mipi_dsi_device *dsi)
return 0;
}
+static const struct dsic_panel_data taal_data = {
+ .xres = 864,
+ .yres = 480,
+ .refresh = 60,
+ .width_mm = 0,
+ .height_mm = 0,
+ .max_hs_rate = 300000000,
+ .max_lp_rate = 10000000,
+};
+
+static const struct dsic_panel_data himalaya_data = {
+ .xres = 480,
+ .yres = 864,
+ .refresh = 60,
+ .width_mm = 49,
+ .height_mm = 88,
+ .max_hs_rate = 300000000,
+ .max_lp_rate = 10000000,
+};
+
+static const struct dsic_panel_data droid4_data = {
+ .xres = 540,
+ .yres = 960,
+ .refresh = 60,
+ .width_mm = 50,
+ .height_mm = 89,
+ .max_hs_rate = 300000000,
+ .max_lp_rate = 10000000,
+};
+
static const struct of_device_id dsicm_of_match[] = {
- { .compatible = "panel-dsi-cm", },
+ { .compatible = "tpo,taal", .data = &taal_data },
+ { .compatible = "nokia,himalaya", &himalaya_data },
+ { .compatible = "motorola,droid4-panel", &droid4_data },
{},
};
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
More information about the dri-devel
mailing list