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authorTomi Valkeinen <tomi.valkeinen@ti.com>2011-03-24 14:53:27 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2011-05-11 14:20:48 +0300
commit1abf78145412ef185d553dccfab661e7c88c0b20 (patch)
treef2f036f23d16846f686cc38f607f042933a55203 /include/video
parent883b9ac95e2075fa8edd9260d8818b756f96440b (diff)
downloadop-kernel-dev-1abf78145412ef185d553dccfab661e7c88c0b20.zip
op-kernel-dev-1abf78145412ef185d553dccfab661e7c88c0b20.tar.gz
OMAP: DSS2: Taal: Implement ULPS functionality
ULPS is a low power state where the DSI lanes are kept at ground. This patch implements ULPS by having a DSI bus inactivity timer which triggers the entry to ULPS. ULPS exit will happen automatically when the driver needs to do something on the DSI lanes. The ulps_timeout is configurable from board file or via sysfs. Additionally another sysfs file, "ulps", can be used to check the current ULPS state, or to manually enter or exit ULPS. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'include/video')
-rw-r--r--include/video/omap-panel-nokia-dsi.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/video/omap-panel-nokia-dsi.h b/include/video/omap-panel-nokia-dsi.h
index 3bd8d23..921ae93 100644
--- a/include/video/omap-panel-nokia-dsi.h
+++ b/include/video/omap-panel-nokia-dsi.h
@@ -9,6 +9,7 @@ struct omap_dss_device;
* @use_ext_te: use external TE
* @ext_te_gpio: external TE GPIO
* @esd_interval: interval of ESD checks, 0 = disabled (ms)
+ * @ulps_timeout: time to wait before entering ULPS, 0 = disabled (ms)
* @max_backlight_level: maximum backlight level
* @set_backlight: pointer to backlight set function
* @get_backlight: pointer to backlight get function
@@ -22,6 +23,7 @@ struct nokia_dsi_panel_data {
int ext_te_gpio;
unsigned esd_interval;
+ unsigned ulps_timeout;
int max_backlight_level;
int (*set_backlight)(struct omap_dss_device *dssdev, int level);
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