From 508886cf98c81cee73cd75943b3d0039801327ab Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 17 Mar 2010 13:35:21 +0100 Subject: [PATCH] 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 Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/sdi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c index 3de3c1e559aa..ee07a3cc22ef 100644 --- a/drivers/video/omap2/dss/sdi.c +++ b/drivers/video/omap2/dss/sdi.c @@ -23,13 +23,16 @@ #include #include #include +#include #include +#include #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. -- 2.39.2