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Commit 508886cf authored by Roger Quadros's avatar Roger Quadros Committed by Tomi Valkeinen
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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: default avatarRoger Quadros <roger.quadros@nokia.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@nokia.com>
parent b1d145b6

drivers/video/omap2/dss/sdi.c

+15 −0
Original line number Diff line number Diff line
@@ -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 @@ int omapdss_sdi_display_enable(struct omap_dss_device *dssdev) 
		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 @@ int omapdss_sdi_display_enable(struct omap_dss_device *dssdev) 
	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 @@ void omapdss_sdi_display_disable(struct omap_dss_device *dssdev) 


	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 @@ int sdi_init(bool skip_init) 
	/* 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.