OMAP: DSS2: Use vdds_sdi regulator supply in SDI
This patch enables the use of vdds_sdi regulator in SDI subsystem.
We can disable the vdds_sdi voltage when not in use to save
power.
Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c
index 3de3c1e..ee07a3c 100644
--- a/drivers/video/omap2/dss/sdi.c
+++ b/drivers/video/omap2/dss/sdi.c
@@ -23,13 +23,16 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
+#include <linux/regulator/consumer.h>
#include <plat/display.h>
+#include <plat/cpu.h>
#include "dss.h"
static struct {
bool skip_init;
bool update_enabled;
+ struct regulator *vdds_sdi_reg;
} sdi;
static void sdi_basic_init(void)
@@ -57,6 +60,10 @@
goto err0;
}
+ r = regulator_enable(sdi.vdds_sdi_reg);
+ if (r)
+ goto err1;
+
/* In case of skip_init sdi_init has already enabled the clocks */
if (!sdi.skip_init)
dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
@@ -120,6 +127,7 @@
return 0;
err2:
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
+ regulator_disable(sdi.vdds_sdi_reg);
err1:
omap_dss_stop_device(dssdev);
err0:
@@ -135,6 +143,8 @@
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
+ regulator_disable(sdi.vdds_sdi_reg);
+
omap_dss_stop_device(dssdev);
}
EXPORT_SYMBOL(omapdss_sdi_display_disable);
@@ -151,6 +161,11 @@
/* we store this for first display enable, then clear it */
sdi.skip_init = skip_init;
+ sdi.vdds_sdi_reg = dss_get_vdds_sdi();
+ if (IS_ERR(sdi.vdds_sdi_reg)) {
+ DSSERR("can't get VDDS_SDI regulator\n");
+ return PTR_ERR(sdi.vdds_sdi_reg);
+ }
/*
* Enable clocks already here, otherwise there would be a toggle
* of them until sdi_display_enable is called.