iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/bridge: tfp410: add pclk limits

Browse Source 
Add pixel clock limits to the driver as per TFP410 datasheet: min 25MHz,
max 165MHz.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200121094655.9092-1-tomi.valkeinen@ti.com
This commit is contained in:
Tomi Valkeinen 2020-01-21 11:46:55 +02:00
parent 2f2aa13724
commit 9109594def
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/gpu/drm/bridge/ti-tfp410.c
View File

@ -167,10 +167,23 @@ static void tfp410_disable(struct drm_bridge *bridge)
gpiod_set_value_cansleep(dvi->powerdown, 1);
}
static enum drm_mode_status tfp410_mode_valid(struct drm_bridge *bridge,
const struct drm_display_mode *mode)
{
if (mode->clock < 25000)
return MODE_CLOCK_LOW;
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static const struct drm_bridge_funcs tfp410_bridge_funcs = {
.attach = tfp410_attach,
.enable = tfp410_enable,
.disable = tfp410_disable,
.mode_valid = tfp410_mode_valid,
};
static void tfp410_hpd_work_func(struct work_struct *work)